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Author SHA1 Message Date
nobody b3d53db6c5 This commit was manufactured by cvs2svn to create tag
'Version_1_32_0'.

[SVN r26264]
2004-11-19 19:19:18 +00:00
nobody dfca010fb3 This commit was manufactured by cvs2svn to create branch 'RC_1_32_0'.
[SVN r25797]
2004-10-20 08:26:43 +00:00
77 changed files with 1968 additions and 9928 deletions
-11
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# To get started with Dependabot version updates, you'll need to specify which
# package ecosystems to update and where the package manifests are located.
# Please see the documentation for all configuration options:
# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
version: 2
updates:
- package-ecosystem: "github-actions" # See documentation for possible values
directory: "/" # Location of package manifests
schedule:
interval: "weekly"
-260
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@@ -1,260 +0,0 @@
name: CI
on:
pull_request:
push:
branches:
- master
- develop
- feature/**
env:
UBSAN_OPTIONS: print_stacktrace=1
jobs:
posix:
strategy:
fail-fast: false
matrix:
include:
- toolset: gcc-14 # Do not remove! It is the only toolset that tests CMake tests down below
cxxstd: "03,11,14,17,20"
os: ubuntu-24.04
compiler: g++-14
- toolset: gcc-12
cxxstd: "03,11,14,17,2a"
os: ubuntu-22.04
cxxflags: "cxxflags=--coverage -fsanitize=address,leak,undefined -fno-sanitize-recover=undefined"
linkflags: "linkflags=--coverage -lasan -lubsan"
gcov_tool: "gcov-12"
launcher: "testing.launcher=LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libasan.so.8"
- toolset: gcc-11
cxxstd: "03,11,14,17,2a"
os: ubuntu-22.04
- toolset: clang
compiler: clang++-14
cxxstd: "03,11,14,17,2a"
os: ubuntu-22.04
- toolset: clang
cxxstd: "11,14,17,20"
os: macos-latest
- toolset: clang-19
cxxstd: "20,23"
os: ubuntu-24.04
compiler: clang++-19
install: clang-19 llvm-19 libclang-rt-19-dev libc++-19-dev libc++abi-19-dev clang-tools-19
runs-on: ${{matrix.os}}
steps:
- uses: actions/checkout@v6
- name: Install packages
if: matrix.install
run: sudo apt install ${{matrix.install}}
- name: Setup Boost
run: |
echo GITHUB_REPOSITORY: $GITHUB_REPOSITORY
LIBRARY=${GITHUB_REPOSITORY#*/}
echo LIBRARY: $LIBRARY
echo "LIBRARY=$LIBRARY" >> $GITHUB_ENV
echo GITHUB_BASE_REF: $GITHUB_BASE_REF
echo GITHUB_REF: $GITHUB_REF
REF=${GITHUB_BASE_REF:-$GITHUB_REF}
REF=${REF#refs/heads/}
echo REF: $REF
BOOST_BRANCH=develop && [ "$REF" == "master" ] && BOOST_BRANCH=master || true
echo BOOST_BRANCH: $BOOST_BRANCH
cd ..
git clone -b $BOOST_BRANCH --depth 10 https://github.com/boostorg/boost.git boost-root
cd boost-root
git submodule update --init --depth 10 --jobs 2 tools/boostdep tools/inspect libs/filesystem
python tools/boostdep/depinst/depinst.py --git_args "--depth 10 --jobs 3" filesystem
rm -rf libs/$LIBRARY/*
cp -r $GITHUB_WORKSPACE/* libs/$LIBRARY
python tools/boostdep/depinst/depinst.py --include benchmark --include example --include examples --include tools --git_args "--depth 10 --jobs 3" $LIBRARY
./bootstrap.sh
./b2 -j4 variant=debug tools/inspect
- name: Run modules tests without 'import std;'
if: ${{matrix.toolset == 'clang-19'}}
run: |
cd ../boost-root/libs/lexical_cast
cmake -S test/cmake_subdir_test -B build_module \
-GNinja \
-DBUILD_TESTING=1 \
-DBOOST_USE_MODULES=1 \
-DCMAKE_CXX_COMPILER=clang++-19 \
-DCMAKE_C_COMPILER=clang-19
cmake --build build_module
ctest --test-dir build_module -V --no-tests=error
rm -rf build_module
- name: Run modules tests
if: ${{matrix.toolset == 'clang-19'}}
run: |
cd ../boost-root/libs/lexical_cast
cmake -S test/cmake_subdir_test -B build_module \
-GNinja \
-DBUILD_TESTING=1 \
-DBOOST_USE_MODULES=1 \
-DCMAKE_CXX_COMPILER=clang++-19 \
-DCMAKE_C_COMPILER=clang-19 \
-DCMAKE_CXX_FLAGS=-stdlib=libc++ \
-DCMAKE_CXX_STANDARD=23 \
-DCMAKE_EXPERIMENTAL_CXX_IMPORT_STD=0e5b6991-d74f-4b3d-a41c-cf096e0b2508 \
-DCMAKE_CXX_MODULE_STD=ON
cmake --build build_module
ctest --test-dir build_module -V --no-tests=error
rm -rf build_module
- name: Run CMake tests
if: ${{matrix.toolset == 'gcc-14' || matrix.toolset == 'clang-19'}}
run: |
cd ../boost-root/
cmake -S . -B __build \
-DBUILD_TESTING=1 \
-DBOOST_INCLUDE_LIBRARIES=lexical_cast \
-DCMAKE_CXX_COMPILER=${{matrix.compiler}} \
-DCMAKE_C_COMPILER=${{matrix.toolset}}
cmake --build __build --target tests
ctest --test-dir __build --output-on-failure --no-tests=error
rm -rf __build
- name: Run tests
run: |
cd ../boost-root
./b2 -j3 libs/$LIBRARY/test toolset=${{matrix.toolset}} cxxstd=${{matrix.cxxstd}} variant=debug,release "${{matrix.cxxflags}}" "${{matrix.linkflags}}" "${{matrix.launcher}}"
dist/bin/inspect libs/$LIBRARY
- name: Prepare coverage data
if: matrix.gcov_tool
run: |
mkdir -p $GITHUB_WORKSPACE/coveralls
echo -e "#!/bin/bash\nexec ${{matrix.gcov_tool}} \"\$@\"" > $GITHUB_WORKSPACE/coveralls/gcov_wrapper.sh
chmod +x $GITHUB_WORKSPACE/coveralls/gcov_wrapper.sh
wget https://github.com/linux-test-project/lcov/archive/v1.16.zip
unzip v1.16.zip
LCOV="`pwd`/lcov-1.16/bin/lcov --gcov-tool $GITHUB_WORKSPACE/coveralls/gcov_wrapper.sh"
echo "$LCOV --directory ../boost-root/bin.v2/libs/$LIBRARY/ --base-directory `pwd`/libs/$LIBRARY/test --capture --output-file $GITHUB_WORKSPACE/coveralls/coverage.info"
$LCOV --directory ../boost-root/bin.v2/libs/$LIBRARY/ --base-directory ../boost-root/ --capture --output-file $GITHUB_WORKSPACE/coveralls/coverage.info
$LCOV --remove $GITHUB_WORKSPACE/coveralls/coverage.info "/usr*" "*/$LIBRARY/test/*" ${{matrix.ignore_coverage}} "*/$LIBRARY/tests/*" "*/$LIBRARY/examples/*" "*/$LIBRARY/example/*" -o $GITHUB_WORKSPACE/coveralls/coverage.info
cd ../boost-root
OTHER_LIBS=`grep "submodule .*" .gitmodules | sed 's/\[submodule\ "\(.*\)"\]/"\*\/boost\/\1\.hpp" "\*\/boost\/\1\/\*"/g'| sed "/\"\*\/boost\/$LIBRARY\/\*\"/d" | sed ':a;N;$!ba;s/\n/ /g'`
echo $OTHER_LIBS
eval "$LCOV --remove $GITHUB_WORKSPACE/coveralls/coverage.info $OTHER_LIBS -o $GITHUB_WORKSPACE/coveralls/coverage.info"
- name: Coveralls
uses: coverallsapp/github-action@master
if: matrix.gcov_tool
with:
github-token: ${{ secrets.GITHUB_TOKEN }}
path-to-lcov: ./coveralls/coverage.info
parallel: true
windows:
strategy:
fail-fast: false
matrix:
include:
- toolset: msvc-14.3
cxxstd: "14,17,20,latest"
addrmd: 32,64
os: windows-2022
- toolset: msvc
cxxstd: "14,17,latest"
addrmd: 64
os: windows-2025
- toolset: gcc
cxxstd: "03,11,14,17,2a"
addrmd: 64
os: windows-2022
runs-on: ${{matrix.os}}
steps:
- uses: actions/checkout@v6
- name: Setup Boost
shell: cmd
run: |
echo GITHUB_REPOSITORY: %GITHUB_REPOSITORY%
for /f %%i in ("%GITHUB_REPOSITORY%") do set LIBRARY=%%~nxi
echo LIBRARY: %LIBRARY%
echo LIBRARY=%LIBRARY%>>%GITHUB_ENV%
echo GITHUB_BASE_REF: %GITHUB_BASE_REF%
echo GITHUB_REF: %GITHUB_REF%
if "%GITHUB_BASE_REF%" == "" set GITHUB_BASE_REF=%GITHUB_REF%
set BOOST_BRANCH=develop
for /f %%i in ("%GITHUB_BASE_REF%") do if "%%~nxi" == "master" set BOOST_BRANCH=master
echo BOOST_BRANCH: %BOOST_BRANCH%
cd ..
git clone -b %BOOST_BRANCH% --depth 10 https://github.com/boostorg/boost.git boost-root
cd boost-root
xcopy /s /e /q %GITHUB_WORKSPACE% libs\%LIBRARY%\
git submodule update --init tools/boostdep libs/test
python tools/boostdep/depinst/depinst.py --include benchmark --include example --include examples --include tools --git_args "--jobs 3" %LIBRARY%
cmd /c bootstrap
- name: Run CMake tests
if: ${{matrix.toolset == 'msvc-14.3'}}
shell: cmd
run: |
choco install --no-progress ninja
call "C:/Program Files/Microsoft Visual Studio/2022/Enterprise/VC/Auxiliary/Build/vcvarsall.bat" x64
cd ../boost-root/
mkdir __build
cd __build
cmake -DBUILD_TESTING=1 -DBOOST_INCLUDE_LIBRARIES=lexical_cast -G Ninja ..
cmake --build . --target tests --config Debug
ctest --output-on-failure --no-tests=error -C Debug
- name: Run modules tests
if: false
#if: ${{matrix.toolset == 'msvc-14.3'}}
shell: cmd
run: |
choco install --no-progress ninja
call "C:/Program Files/Microsoft Visual Studio/2022/Enterprise/VC/Auxiliary/Build/vcvarsall.bat" x64
cd ../boost-root/libs/lexical_cast
rm -rf build_module
mkdir build_module
cd build_module
cmake -DBOOST_USE_MODULES=1 -DCMAKE_CXX_STANDARD=23 -DCMAKE_EXPERIMENTAL_CXX_IMPORT_STD=0e5b6991-d74f-4b3d-a41c-cf096e0b2508 -G Ninja ../test/cmake_subdir_test/
cmake --build .
ctest --no-tests=error -V
- name: Run modules tests without 'import std;'
if: ${{matrix.toolset == 'msvc-14.3'}}
shell: cmd
run: |
choco install --no-progress ninja
call "C:/Program Files/Microsoft Visual Studio/2022/Enterprise/VC/Auxiliary/Build/vcvarsall.bat" x64
cd ../boost-root/libs/lexical_cast
rm -rf build_module
mkdir build_module
cd build_module
cmake -DBOOST_USE_MODULES=1 -DCMAKE_CXX_STANDARD=20 -G Ninja ../test/cmake_subdir_test/
cmake --build .
ctest --no-tests=error -V
- name: Run tests
shell: cmd
run: |
cd ../boost-root
b2 -j3 libs/%LIBRARY%/test toolset=${{matrix.toolset}} cxxstd=${{matrix.cxxstd}} address-model=${{matrix.addrmd}} variant=debug,release
finish:
if: false
needs: posix
runs-on: ubuntu-latest
steps:
- name: Coveralls Finished
uses: coverallsapp/github-action@master
with:
github-token: ${{ secrets.github_token }}
parallel-finished: true
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# Generated by `boostdep --cmake lexical_cast`
# Copyright 2020 Peter Dimov
# Distributed under the Boost Software License, Version 1.0.
# https://www.boost.org/LICENSE_1_0.txt
cmake_minimum_required(VERSION 3.5...4.0)
project(boost_lexical_cast VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)
if (BOOST_USE_MODULES)
add_library(boost_lexical_cast)
target_sources(boost_lexical_cast PUBLIC
FILE_SET modules_public TYPE CXX_MODULES FILES
${CMAKE_CURRENT_LIST_DIR}/modules/boost_lexical_cast.cppm
)
target_compile_features(boost_lexical_cast PUBLIC cxx_std_20)
target_compile_definitions(boost_lexical_cast PUBLIC BOOST_USE_MODULES)
if (CMAKE_CXX_COMPILER_IMPORT_STD)
target_compile_definitions(boost_lexical_cast PRIVATE BOOST_LEXICAL_CAST_USE_STD_MODULE)
message(STATUS "Using `import std;`")
else()
message(STATUS "`import std;` is not available")
endif()
set(__scope PUBLIC)
else()
add_library(boost_lexical_cast INTERFACE)
set(__scope INTERFACE)
endif()
target_include_directories(boost_lexical_cast ${__scope} include)
target_link_libraries(boost_lexical_cast
${__scope}
Boost::config
Boost::container
Boost::core
Boost::throw_exception
)
add_library(Boost::lexical_cast ALIAS boost_lexical_cast)
if(BUILD_TESTING)
add_subdirectory(test)
endif()
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# [Boost.LexicalCast](https://boost.org/libs/lexical_cast)
Boost.LexicalCast is one of the [Boost C++ Libraries](https://github.com/boostorg). This library is meant for general literal text conversions, such as an int represented a string, or vice-versa.
### Test results
@ | Build | Tests coverage | More info
----------------|-------------- | -------------- |-----------
Develop branch: | [![CI](https://github.com/boostorg/lexical_cast/actions/workflows/ci.yml/badge.svg?branch=develop)](https://github.com/boostorg/lexical_cast/actions/workflows/ci.yml) [![Build status](https://ci.appveyor.com/api/projects/status/mwwanh1bpsnuv38h/branch/develop?svg=true)](https://ci.appveyor.com/project/apolukhin/lexical-cast/branch/develop) | [![Coverage Status](https://coveralls.io/repos/boostorg/lexical_cast/badge.png?branch=develop)](https://coveralls.io/r/boostorg/lexical_cast?branch=develop) | [details...](https://www.boost.org/development/tests/develop/developer/lexical_cast.html)
Master branch: | [![CI](https://github.com/boostorg/lexical_cast/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/boostorg/lexical_cast/actions/workflows/ci.yml) [![Build status](https://ci.appveyor.com/api/projects/status/mwwanh1bpsnuv38h/branch/master?svg=true)](https://ci.appveyor.com/project/apolukhin/lexical-cast/branch/master) | [![Coverage Status](https://coveralls.io/repos/boostorg/lexical_cast/badge.png?branch=master)](https://coveralls.io/r/boostorg/lexical_cast?branch=master) | [details...](https://www.boost.org/development/tests/master/developer/lexical_cast.html)
[Latest developer documentation](https://www.boost.org/doc/libs/develop/doc/html/boost_lexical_cast.html)
### License
Distributed under the [Boost Software License, Version 1.0](https://boost.org/LICENSE_1_0.txt).
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# Copyright René Ferdinand Rivera Morell 2023-2024
# Distributed under the Boost Software License, Version 1.0.
# (See accompanying file LICENSE_1_0.txt or copy at
# http://www.boost.org/LICENSE_1_0.txt)
require-b2 5.2 ;
constant boost_dependencies :
/boost/config//boost_config
/boost/container//boost_container
/boost/core//boost_core
/boost/throw_exception//boost_throw_exception ;
project /boost/lexical_cast
: common-requirements
<include>include
;
explicit
[ alias boost_lexical_cast : : : : <library>$(boost_dependencies) ]
[ alias all : boost_lexical_cast test ]
;
call-if : boost-library lexical_cast
;
+202
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta name="generator" content=
"HTML Tidy for Cygwin (vers 1st April 2002), see www.w3.org">
<meta http-equiv="Content-Type" content=
"text/html; charset=windows-1252">
<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
<meta name="ProgId" content="FrontPage.Editor.Document">
<title>Header boost/cast.hpp Documentation</title>
</head>
<body bgcolor="#FFFFFF" text="#000000">
<h1><img src="../../boost.png" alt="boost.png (6897 bytes)" align=
"middle" width="277" height="86">Header <a href=
"../../boost/cast.hpp">boost/cast.hpp</a></h1>
<h2><a name="Cast Functions">Cast Functions</a></h2>
<p>The header <a href="../../boost/cast.hpp">boost/cast.hpp</a> provides
<a href="#Polymorphic_cast"><b>polymorphic_cast</b></a>, <a href=
"#Polymorphic_cast"><b>polymorphic_downcast</b></a>, and <a href=
"#numeric_cast"><b>numeric_cast</b></a> function templates designed to
complement the C++ built-in casts.</p>
<p>The program <a href="cast_test.cpp">cast_test.cpp</a> can be used to
verify these function templates work as expected.</p>
<h3><a name="Polymorphic_cast">Polymorphic casts</a></h3>
<p>Pointers to polymorphic objects (objects of classes which define at
least one virtual function) are sometimes downcast or crosscast.
Downcasting means casting from a base class to a derived class.
Crosscasting means casting across an inheritance hierarchy diagram, such
as from one base to the other in a <b>Y</b> diagram hierarchy.</p>
<p>Such casts can be done with old-style casts, but this approach is
never to be recommended. Old-style casts are sorely lacking in type
safety, suffer poor readability, and are difficult to locate with search
tools.</p>
<p>The C++ built-in <b>static_cast</b> can be used for efficiently
downcasting pointers to polymorphic objects, but provides no error
detection for the case where the pointer being cast actually points to
the wrong derived class. The <b>polymorphic_downcast</b> template retains
the efficiency of <b>static_cast</b> for non-debug compilations, but for
debug compilations adds safety via an assert() that a <b>dynamic_cast</b>
succeeds.</p>
<p>The C++ built-in <b>dynamic_cast</b> can be used for downcasts and
crosscasts of pointers to polymorphic objects, but error notification in
the form of a returned value of 0 is inconvenient to test, or worse yet,
easy to forget to test. The throwing form of <b>dynamic_cast</b>, which
works on references, can be used on pointers through the ugly expression
&amp;<code>dynamic_cast&lt;T&amp;&gt;(*p)</code>, which causes undefined
behavior if <code>p</code> is <code>0</code>. The <b>polymorphic_cast</b>
template performs a <b>dynamic_cast</b> on a pointer, and throws an
exception if the <b>dynamic_cast</b> returns 0.</p>
<p>A <b>polymorphic_downcast</b> is preferred when debug-mode tests will
cover 100% of the object types possibly cast and when non-debug-mode
efficiency is an issue. If these two conditions are not present,
<b>polymorphic_cast</b> is preferred. It must also be used for
crosscasts. It does an assert( dynamic_cast&lt;Derived&gt;(x) == x )
where x is the base pointer, ensuring that not only is a non-zero pointer
returned, but also that it correct in the presence of multiple
inheritance. <b>Warning:</b>: Because <b>polymorphic_downcast</b> uses
assert(), it violates the one definition rule (ODR) if NDEBUG is
inconsistently defined across translation units. [See ISO Std 3.2]</p>
<p>The C++ built-in <b>dynamic_cast</b> must be used to cast references
rather than pointers. It is also the only cast that can be used to check
whether a given interface is supported; in that case a return of 0 isn't
an error condition.</p>
<h3>polymorphic_cast and polymorphic_downcast synopsis</h3>
<blockquote>
<pre>
namespace boost {
template &lt;class Derived, class Base&gt;
inline Derived polymorphic_cast(Base* x);
// Throws: std::bad_cast if ( dynamic_cast&lt;Derived&gt;(x) == 0 )
// Returns: dynamic_cast&lt;Derived&gt;(x)
template &lt;class Derived, class Base&gt;
inline Derived polymorphic_downcast(Base* x);
// Effects: assert( dynamic_cast&lt;Derived&gt;(x) == x );
// Returns: static_cast&lt;Derived&gt;(x)
}
</pre>
</blockquote>
<h3>polymorphic_downcast example</h3>
<blockquote>
<pre>
#include &lt;boost/cast.hpp&gt;
...
class Fruit { public: virtual ~Fruit(){}; ... };
class Banana : public Fruit { ... };
...
void f( Fruit * fruit ) {
// ... logic which leads us to believe it is a Banana
Banana * banana = boost::polymorphic_downcast&lt;Banana*&gt;(fruit);
...
</pre>
</blockquote>
<h3><a name="numeric_cast">numeric_cast</a></h3>
<p>A <b>static_cast</b> or implicit conversion will not detect failure to
preserve range for numeric casts. The <b>numeric_cast</b> function
templates are similar to <b>static_cast</b> and certain (dubious)
implicit conversions in this respect, except that they detect loss of
numeric range. An exception is thrown when a runtime value-preservation
check fails.</p>
<p>The requirements on the argument and result types are:</p>
<blockquote>
<ul>
<li>Both argument and result types are CopyConstructible [ISO Std
20.1.3].</li>
<li>Both argument and result types are Numeric, defined by
<code>std::numeric_limits&lt;&gt;::is_specialized</code> being
true.</li>
<li>The argument can be converted to the result type using
<b>static_cast</b>.</li>
</ul>
</blockquote>
<h3>numeric_cast synopsis</h3>
<blockquote>
<pre>
namespace boost {
class bad_numeric_cast : public std::bad_cast {...};
template&lt;typename Target, typename Source&gt;
inline Target numeric_cast(Source arg);
// Throws: bad_numeric_cast unless, in converting arg from Source to Target,
// there is no loss of negative range, and no underflow, and no
// overflow, as determined by std::numeric_limits
// Returns: static_cast&lt;Target&gt;(arg)
}
</pre>
</blockquote>
<h3>numeric_cast example</h3>
<blockquote>
<pre>
#include &lt;boost/cast.hpp&gt;
using namespace boost::cast;
void ariane(double vx)
{
...
unsigned short dx = numeric_cast&lt;unsigned short&gt;(vx);
...
}
</pre>
</blockquote>
<h3>numeric_cast rationale</h3>
<p>The form of the throws condition is specified so that != is not a
required operation.</p>
<h3>History</h3>
<p><b>polymorphic_cast</b> was suggested by Bjarne Stroustrup in "The C++
Programming Language".<br>
<b>polymorphic_downcast</b> was contributed by <a href=
"../../people/dave_abrahams.htm">Dave Abrahams</a>.<b><br>
numeric_cast</b> was contributed by <a href=
"../../people/kevlin_henney.htm">Kevlin Henney</a>.</p>
<hr>
<p>Revised
<!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan
-->06 January, 2001
<!--webbot bot="Timestamp" endspan i-checksum="38320"
--></p>
<p>&copy; Copyright boost.org 1999. Permission to copy, use, modify, sell
and distribute this document is granted provided this copyright notice
appears in all copies. This document is provided "as is" without express
or implied warranty, and with no claim as to its suitability for any
purpose.</p>
</body>
</html>
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// boost utility cast test program -----------------------------------------//
// (C) Copyright Beman Dawes, Dave Abrahams 1999. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// See http://www.boost.org for most recent version including documentation.
// Revision History
// 28 Set 04 factored out numeric_cast<> test (Fernando Cacciola)
// 20 Jan 01 removed use of <limits> for portability to raw GCC (David Abrahams)
// 28 Jun 00 implicit_cast removed (Beman Dawes)
// 30 Aug 99 value_cast replaced by numeric_cast
// 3 Aug 99 Initial Version
#include <iostream>
#include <climits>
#include <cfloat> // for DBL_MAX (Peter Schmid)
#include <boost/cast.hpp>
# if SCHAR_MAX == LONG_MAX
# error "This test program doesn't work if SCHAR_MAX == LONG_MAX"
# endif
using namespace boost;
using std::cout;
namespace
{
struct Base
{
virtual char kind() { return 'B'; }
};
struct Base2
{
virtual char kind2() { return '2'; }
};
struct Derived : public Base, Base2
{
virtual char kind() { return 'D'; }
};
}
int main( int argc, char * argv[] )
{
# ifdef NDEBUG
cout << "NDEBUG is defined\n";
# else
cout << "NDEBUG is not defined\n";
# endif
cout << "\nBeginning tests...\n";
// test polymorphic_cast ---------------------------------------------------//
// tests which should succeed
Base * base = new Derived;
Base2 * base2 = 0;
Derived * derived = 0;
derived = polymorphic_downcast<Derived*>( base ); // downcast
assert( derived->kind() == 'D' );
derived = 0;
derived = polymorphic_cast<Derived*>( base ); // downcast, throw on error
assert( derived->kind() == 'D' );
base2 = polymorphic_cast<Base2*>( base ); // crosscast
assert( base2->kind2() == '2' );
// tests which should result in errors being detected
int err_count = 0;
base = new Base;
if ( argc > 1 && *argv[1] == '1' )
{ derived = polymorphic_downcast<Derived*>( base ); } // #1 assert failure
bool caught_exception = false;
try { derived = polymorphic_cast<Derived*>( base ); }
catch (std::bad_cast)
{ cout<<"caught bad_cast\n"; caught_exception = true; }
if ( !caught_exception ) ++err_count;
// the following is just so generated code can be inspected
if ( derived->kind() == 'B' ) ++err_count;
cout << err_count << " errors detected\nTest "
<< (err_count==0 ? "passed\n" : "failed\n");
return err_count;
} // main
-27
View File
@@ -1,27 +0,0 @@
# Copyright Antony Polukhin, 2011-2026.
#
# Use, modification, and distribution are
# subject to the Boost Software License, Version 1.0. (See accompanying
# file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
using quickbook ;
import boostbook : boostbook ;
xml lexical_cast : lexical_cast.qbk ;
boostbook standalone
:
lexical_cast
:
<xsl:param>boost.root=../../../..
<format>pdf:<xsl:param>boost.url.prefix=http://www.boost.org/doc/libs/release/doc/html
;
###############################################################################
alias boostdoc
: lexical_cast
:
:
: ;
explicit boostdoc ;
alias boostrelease ;
explicit boostrelease ;
-847
View File
@@ -1,847 +0,0 @@
[library Boost.Lexical_Cast
[quickbook 1.5]
[version 1.0]
[copyright 2000-2005 Kevlin Henney]
[copyright 2006-2010 Alexander Nasonov]
[copyright 2011-2026 Antony Polukhin]
[category String and text processing]
[category Miscellaneous]
[license
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE_1_0.txt or copy at
[@http://www.boost.org/LICENSE_1_0.txt])
]
]
[def __numericcast__ [@boost:libs/numeric/conversion/doc/html/boost_numericconversion/improved_numeric_cast__.html `boost::numeric_cast`]]
[def __proposallong__ [@http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1973.html Lexical Conversion Library Proposal for TR2, N1973 by Kevlin Henney and Beman Dawes]]
[def __proposalshort__ [@http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1973.html Lexical Conversion Library Proposal for TR2, N1973]]
[section Motivation]
Sometimes a value must be converted to a literal text form, such as an [c++] `int` represented as a `std::string`, or vice-versa, when a `std::string` is interpreted as an `int`. Such examples are common when converting between data types internal to a program and representation external to a program, such as windows and configuration files.
The standard C and C++ libraries offer a number of facilities for performing such conversions. However, they vary with their ease of use, extensibility, and safety.
For instance, there are a number of limitations with the family of standard C functions typified by `atoi`:
* Conversion is supported in one direction only: from text to internal data type. Converting the other way using the C library requires either the inconvenience and compromised safety of the `sprintf` function, or the loss of portability associated with non-standard functions such as `itoa`.
* The range of types supported is only a subset of the built-in numeric types, namely `int`, `long`, and `double`.
* The range of types cannot be extended in a uniform manner. For instance, conversion from string representation to complex or rational.
The standard C functions typified by `strtol` have the same basic limitations, but offer finer control over the conversion process. However, for the common case such control is often either not required or not used. The `scanf` family of functions offer even greater control, but also lack safety and ease of use.
The standard C++ library offers `stringstream` for the kind of in-core formatting being discussed. It offers a great deal of control over the formatting and conversion of I/O to and from arbitrary types through text. However, for simple conversions direct use of `stringstream` can be either clumsy (with the introduction of extra local variables and the loss of infix-expression convenience) or obscure (where `stringstream` objects are created as temporary objects in an expression). Facets provide a comprehensive concept and facility for controlling textual representation, but their perceived complexity and high entry level requires an extreme degree of involvement for simple conversions, and excludes all but a few programmers.
The `lexical_cast` function template offers a convenient and consistent form for supporting common conversions to and from arbitrary types when they are represented as text. The simplification it offers is in expression-level convenience for such conversions. For more involved conversions, such as where precision or formatting need tighter control than is offered by the default behavior of `lexical_cast`, the conventional `std::stringstream` approach is recommended. Where the conversions are numeric to numeric, __numericcast__ may offer more reasonable behavior than `lexical_cast`.
For a good discussion of the options and issues involved in string-based formatting, including comparison of `stringstream`, `lexical_cast`, and others, see Herb Sutter's article, [@http://www.gotw.ca/publications/mill19.htm The String Formatters of Manor Farm]. Also, take a look at the [link boost_lexical_cast.performance Performance] section.
[endsect]
[section Examples]
[import ../example/args_to_numbers.cpp]
[section Strings to numbers conversion] [lexical_cast_args_example] [endsect]
[import ../example/small_examples.cpp]
[section Numbers to strings conversion] [lexical_cast_log_errno] [endsect]
[section Converting to string without dynamic memory allocation] [lexical_cast_fixed_buffer] [endsect]
[section Converting part of the string] [lexical_cast_substring_conversion] [endsect]
[import ../example/generic_stringize.cpp]
[section Generic programming (Boost.Fusion)] [lexical_cast_stringize] [endsect]
[import ../example/variant_to_long_double.cpp]
[section Generic programming (Boost.Variant)] [lexical_cast_variant_to_long_double] [endsect]
[endsect]
[section Synopsis]
Library features defined in [@boost:boost/lexical_cast.hpp boost/lexical_cast.hpp]:
``
namespace boost
{
class bad_lexical_cast;
template<typename Target, typename Source>
Target lexical_cast(const Source& arg);
template <typename Target>
Target lexical_cast(const AnyCharacterType* chars, std::size_t count);
namespace conversion
{
template<typename Target, typename Source>
bool try_lexical_convert(const Source& arg, Target& result);
template <typename AnyCharacterType, typename Target>
bool try_lexical_convert(const AnyCharacterType* chars, std::size_t count, Target& result);
} // namespace conversion
} // namespace boost
``
[section lexical_cast]
``
template<typename Target, typename Source>
Target lexical_cast(const Source& arg);
``
Returns the result of streaming arg into a standard library string-based stream and then out as a Target object. Where Target is either `std::string` or `std::wstring`, stream extraction takes the whole content of the string, including spaces, rather than relying on the default `operator>>` behavior. If the conversion is unsuccessful, a `bad_lexical_cast` exception is thrown.
``
template <typename Target>
Target lexical_cast(const AnyCharacterType* chars, std::size_t count);
``
Takes an array of `count` characters as input parameter and streams them out as a Target object. If the conversion is unsuccessful, a `bad_lexical_cast` exception is thrown. This call may be useful for processing nonzero terminated array of characters or processing just some part of character array.
The requirements on the argument and result types for both functions are:
* Source is OutputStreamable, meaning that an `operator<<` is defined that takes a `std::ostream` or `std::wostream` object on the left hand side and an instance of the argument type on the right.
* Target is InputStreamable, meaning that an `operator>>` is defined that takes a `std::istream` or `std::wistream` object on the left hand side and an instance of the result type on the right.
* Target is CopyConstructible [20.1.3].
* Target is DefaultConstructible, meaning that it is possible to default-initialize an object of that type [8.5, 20.1.4].
The character type of the underlying stream is assumed to be `char` unless either the `Source` or the `Target` requires wide-character streaming, in which case the underlying stream uses `wchar_t`. Following types also can use `char16_t` or `char32_t` for wide-character streaming:
* Single character: `char16_t`, `char32_t`
* Arrays of characters: `char16_t *`, `char32_t *`, `const char16_t *`, `const char32_t *`
* Strings: `std::basic_string`, `boost::containers::basic_string`
* `boost::iterator_range<WideCharPtr>`, where `WideCharPtr` is a pointer to wide-character or pointer to const wide-character
* `boost::array<CharT, N>` and `std::array<CharT, N>`, `boost::array<const CharT, N>` and `std::array<const CharT, N>`
[important Many compilers and runtime libraries fail to make conversions using new Unicode characters. Make sure that the following code compiles and outputs nonzero values, before using new types:
``
std::cout
<< boost::lexical_cast<std::u32string>(1.0).size()
<< " "
<< boost::lexical_cast<std::u16string>(1.0).size();
``
]
Where a higher degree of control is required over conversions, `std::stringstream` and `std::wstringstream` offer a more appropriate path. Where non-stream-based conversions are required, `lexical_cast` is the wrong tool for the job and is not special-cased for such scenarios.
[endsect]
[section bad_lexical_cast]
``
class bad_lexical_cast : public std::bad_cast
{
public:
... // same member function interface as std::exception
};
``
Exception used to indicate runtime lexical_cast failure.
[endsect]
[section try_lexical_convert]
`boost::lexical_cast` remains the main interface for lexical conversions. It must be used by default in most cases. However
some developers wish to make their own conversion functions, reusing all the optimizations of the `boost::lexical_cast`.
That's where the `boost::conversion::try_lexical_convert` function steps in.
`try_lexical_convert` returns `true` if conversion succeeded, otherwise returns `false`. If conversion
failed and `false` was returned, state of `result` output variable is undefined.
Actually, `boost::lexical_cast` is implemented using `try_lexical_convert`:
``
template <typename Target, typename Source>
inline Target lexical_cast(const Source &arg)
{
Target result;
if (!conversion::try_lexical_convert(arg, result))
throw bad_lexical_cast();
return result;
}
``
`try_lexical_convert` relaxes the CopyConstructible and DefaultConstructible requirements for `Target` type.
Following requirements for `Target` and `Source` remain:
* Source must be OutputStreamable, meaning that an `operator<<` is defined that takes a `std::ostream` or `std::wostream` object on the left hand side and an instance of the argument type on the right.
* Target must be InputStreamable, meaning that an `operator>>` is defined that takes a `std::istream` or `std::wistream` object on the left hand side and an instance of the result type on the right.
[endsect]
[endsect]
[section Frequently Asked Questions]
* [*Question:] Why does `lexical_cast<int8_t>("127")` throw `bad_lexical_cast`?
* [*Answer:] The type `int8_t` is a `typedef` to `char` or `signed char`. Lexical conversion to these types is simply reading a byte from source but since the source has more than one byte, the exception is thrown.
Please use other integer types such as `int` or `short int`. If bounds checking is important, you can also
call __numericcast__:
`numeric_cast<int8_t>(lexical_cast<int>("127"));`
[pre
]
* [*Question:] Why does `lexical_cast<unsigned char>("127")` throw `bad_lexical_cast`?
* [*Answer:] Lexical conversion to any char type is simply reading a byte from source. But since the source has more than one byte, the exception is thrown.
Please use other integer types such as `int` or `short int`. If bounds checking is important, you can also
call __numericcast__:
`numeric_cast<unsigned char>(lexical_cast<int>("127"));`
[pre
]
* [*Question:] What does `lexical_cast<std::string>` of an `int8_t` or `uint8_t` not do what I expect?
* [*Answer:] As above, note that int8_t and uint8_t are actually chars and are formatted as such. To avoid
this, cast to an integer type first: `lexical_cast<std::string>(static_cast<int>(n));`
[pre
]
* [*Question:] The implementation always resets the `ios_base::skipws` flag of an underlying stream object.
It breaks my `operator>>` that works only in presence of this flag. Can you remove code that resets the flag?
* [*Answer:] May be in a future version. There is no requirement in
__proposallong__ to reset the flag but
remember that __proposalshort__ is not yet accepted by the committee. By the way, it's a great opportunity to
make your `operator>>` more general.
Read a good C++ book, study `std::sentry` and [@boost:libs/io/doc/ios_state.html `ios_state_saver`].
[pre
]
* [*Question:] Why does `std::cout << boost::lexical_cast<unsigned int>("-1");` not throw, but outputs 4294967295?
* [*Answer:] `boost::lexical_cast` has the behavior of `std::stringstream`, which uses `num_get` functions of
`std::locale` to convert numbers. If we look at the Programming languages — C++, we'll see, that `num_get` uses
the rules of `scanf` for conversions. And in the C99 standard for unsigned input value minus sign is optional, so
if a negative number is read, no errors will arise and the result will be the two's complement.
[pre
]
* [*Question:] Why does `boost::lexical_cast<int>(L'A');` output 65 and `boost::lexical_cast<wchar_t>(L"65");` not throw?
* [*Answer:] If you are using an old version of Visual Studio or compile code with /Zc:wchar_t- flag,
`boost::lexical_cast` sees single `wchar_t` character as `unsigned short`. It is not a `boost::lexical_cast` mistake, but a
limitation of compiler options that you use.
[pre
]
* [*Question:] Why does `boost::lexical_cast<double>("-1.#IND");` throw `boost::bad_lexical_cast`?
* [*Answer:] `"-1.#IND"` is a compiler extension, that violates standard. You shall input `"-nan"`, `"nan"`, `"inf"`
, `"-inf"` (case insensitive) strings to get NaN and Inf values. `boost::lexical_cast<string>` outputs `"-nan"`, `"nan"`,
`"inf"`, `"-inf"` strings, when has NaN or Inf input values.
[pre
]
* [*Question:] What is the fastest way to convert a non zero terminated string or a substring using `boost::lexical_cast`?
* [*Answer:] Use `boost::iterator_range` for conversion or `lexical_cast` overload with two parameters. For example, if you want to convert to `int` two characters from a string `str`, you shall write `lexical_cast<int>(make_iterator_range(str.data(), str.data() + 2));` or `lexical_cast<int>(str.data(), 2);`.
[endsect]
[section C++20 module]
[caution C++20 module support is on early stage, targets, flags and behavior may change in the future]
If using modern CMake define CMake option `-DBOOST_USE_MODULES=1` to build a C++20 module and
make the `Boost::lexical_cast` CMake target provide it. After that an explicit usage of C++20 module `boost.lexical_cast` is allowed:
[import ../modules/usage_sample.cpp]
[lexical_cast_module_example]
The `Boost::lexical_cast` CMake target gives an ability to mix includes and imports of the library in different translation units. Moreover,
if `BOOST_USE_MODULES` macro is defined then all the `boost/lexical_cast...` includes implicitly do `import boost.lexical_cast;` to give all the
benefits of modules without changing the existing code.
[note For better compile times make sure that `import std;` is available when building the `boost.lexical_cast` module (in CMake logs there should be
a 'Using `import std;`' message). ]
If not using CMake, then the module could be build manually from the `modules/boost_lexical_cast.cppm` file.
For manual module build the following commands could be used for clang compiler:
```
cd lexical_cast/modules
clang++ -I ../include -std=c++20 --precompile -x c++-module boost_lexical_cast.cppm
```
After that, the module could be used in the following way:
```
clang++ -std=c++20 -fmodule-file=boost_lexical_cast.pcm boost_lexical_cast.pcm usage_sample.cpp
```
[endsect]
[section Changes]
* [*boost 1.91.0 :]
* Added C++20 modules support.
* [*boost 1.86.0 :]
* Fixed conversion of `std::basic_string_view` and `boost::basic_string_view`
containing one or more `\0` characters. Issue was introduced in 1.85.0.
* [*boost 1.85.0 :]
* Significant rewrite of the internal logic to separate optimized and C++ Standard Library IO-based streams:
* C++ Standard Library based streams now constructed in less cases leading to [*better performance];
* less template instantiations and simpler code;
* always use `std::char_traits` (do not use custom traits from input/output types as it leads to linktime or runtime errors);
* support for `volatile` input types was dropped, following the C++ Standard Library trend.
* Optimized conversions from std::basic_string_view and boost::basic_string_view
* Dropped dependency on Boost.NumericConversion and Boost.MPL. Fixed some cases
of converting floting point types to arithmetics.
* The library now works fine with `-fno-sanitize-recover=integer`.
* [*boost 1.84.0 :]
* Dropped support of C++98 and C++03.
* [*boost 1.56.0 :]
* Added `boost::conversion::try_lexical_convert` functions.
* [*boost 1.54.0 :]
* Fix some issues with `boost::int128_type` and `boost::uint128_type` conversions. Notify user at compile time
if the `std::numeric_limits` are not specialized for 128bit types and `boost::lexical_cast` can not make conversions.
* [*boost 1.54.0 :]
* Added code to convert `boost::int128_type` and `boost::uint128_type` types (requires GCC 4.7 or higher).
* Conversions to pointers will now fail to compile, instead of throwing at runtime.
* Restored ability to get pointers to `lexical_cast` function (was broken in 1.53.0).
* [*boost 1.53.0 :]
* Much better input and output streams detection for user defined types.
* [*boost 1.52.0 :]
* Restored compilation on MSVC-2003 (was broken in 1.51.0).
* Added `lexical_cast(const CharType* chars, std::size_t count)` function overload.
* [*boost 1.51.0 :]
* Better performance, less memory usage for `boost::array<character_type, N>` and `std::array<character_type, N>` conversions.
* [*boost 1.50.0 :]
* `boost::bad_lexical_cast` exception is now globaly visible and can be catched even if code is compiled with -fvisibility=hidden.
* Now it is possible to compile library with disabled exceptions.
* Better performance, less memory usage and bugfixes for `boost::iterator_range<character_type*>` conversions.
* [*boost 1.49.0 :]
* Restored work with typedefed wchar_t (compilation flag /Zc:wchar_t- for Visual Studio).
* Better performance and less memory usage for `boost::container::basic_string` conversions.
* [*boost 1.48.0 :]
* Added code to work with Inf and NaN on any platform.
* Better performance and less memory usage for conversions to float type (and to double type, if `sizeof(double) < sizeof(long double)`).
* [*boost 1.47.0 :]
* Optimizations for "C" and other locales without number grouping.
* Better performance and less memory usage for unsigned char and signed char conversions.
* Better performance and less memory usage for conversions to arithmetic types.
* Better performance and less memory usage for conversions from arithmetic type to arithmetic type.
* Directly construct Target from Source on some conversions (like conversions from string to string, from char array to string, from char to char and others).
* [*boost 1.34.0 :]
* Better performance for many combinations of Source and Target types. For more details refer to Alexander Nasonovs article [@http://accu.org/index.php/journals/1375 Fine Tuning for lexical_cast, Overload #74, August 2006] [@http://www.accu.org/var/uploads/journals/overload74.pdf (PDF)].
* [*boost 1.33.0 :]
* Call-by-const reference for the parameters. This requires partial specialization of class templates, so it doesn't work for MSVC 6, and it uses the original pass by value there.
* The MSVC 6 support is deprecated, and will be removed in a future Boost version.
* [*Earlier :]
* The previous version of lexical_cast used the default stream precision for reading and writing floating-point numbers. For numerics that have a corresponding specialization of `std::numeric_limits`, the current version now chooses a precision to match.
* The previous version of lexical_cast did not support conversion to or from any wide-character-based types. For compilers with full language and library support for wide characters, `lexical_cast` now supports conversions from `wchar_t`, `wchar_t *`, and `std::wstring` and to `wchar_t` and `std::wstring`.
* The previous version of `lexical_cast` assumed that the conventional stream extractor operators were sufficient for reading values. However, string I/O is asymmetric, with the result that spaces play the role of I/O separators rather than string content. The current version fixes this error for `std::string` and, where supported, `std::wstring`: `lexical_cast<std::string>("Hello, World")` succeeds instead of failing with a `bad_lexical_cast` exception.
* The previous version of `lexical_cast` allowed unsafe and meaningless conversions to pointers. The current version now throws a `bad_lexical_cast` for conversions to pointers: `lexical_cast<char *>("Goodbye, World")` now throws an exception instead of causing undefined behavior.
[endsect]
[section Performance]
In most cases `boost::lexical_cast` is faster than `scanf`, `printf`, `std::stringstream`. For more detailed info you can look at the tables below.
[section Tests description]
All the tests measure execution speed in milliseconds for 10000 iterations of the following code blocks:
[table:legend Tests source code
[[Test name] [Code]]
[[lexical_cast]
[``
_out = boost::lexical_cast<OUTTYPE>(_in);
``]
]
[[std::stringstream with construction]
[``
std::stringstream ss;
ss << _in;
if (ss.fail()) throw std::logic_error(descr);
ss >> _out;
if (ss.fail()) throw std::logic_error(descr);
``]
]
[[std::stringstream without construction]
[``
ss << _in; // ss is an instance of std::stringstream
if (ss.fail()) throw std::logic_error(descr);
ss >> _out;
if (ss.fail()) throw std::logic_error(descr);
/* reseting std::stringstream to use it again */
ss.str(std::string());
ss.clear();
``]
]
[[scanf/printf]
[``
typename OUTTYPE::value_type buffer[500];
sprintf( (char*)buffer, conv, _in);
_out = buffer;
``]
]
]
Fastest results are highlitened with "!!! *x* !!!".
Do not use this results to compare compilers, because tests were taken on different hardware.
[endsect]
[/ BEGIN of section, generated by performance measuring program ]
[section GNU C++ version 9.4.0]
[table:id Performance Table ( GNU C++ version 9.4.0)
[[From->To] [lexical_cast] [std::stringstream with construction] [std::stringstream without construction][scanf/printf]]
[[ string->char ][ !!! *<1* !!! ][ 59 ][ 7 ][ 17 ]]
[[ string->signed char ][ !!! *<1* !!! ][ 142 ][ 13 ][ 21 ]]
[[ string->unsigned char ][ !!! *<1* !!! ][ 63 ][ 5 ][ 8 ]]
[[ string->int ][ !!! *4* !!! ][ 63 ][ 13 ][ 12 ]]
[[ string->short ][ !!! *4* !!! ][ 65 ][ 12 ][ 12 ]]
[[ string->long int ][ !!! *4* !!! ][ 62 ][ 12 ][ 12 ]]
[[ string->long long ][ !!! *3* !!! ][ 61 ][ 13 ][ 12 ]]
[[ string->unsigned int ][ !!! *4* !!! ][ 58 ][ 10 ][ 12 ]]
[[ string->unsigned short ][ !!! *4* !!! ][ 59 ][ 10 ][ 12 ]]
[[ string->unsigned long int ][ !!! *4* !!! ][ 62 ][ 11 ][ 12 ]]
[[ string->unsigned long long ][ !!! *4* !!! ][ 64 ][ 11 ][ 12 ]]
[[ string->float ][ 59 ][ 92 ][ 35 ][ !!! *23* !!! ]]
[[ string->double ][ 55 ][ 89 ][ 31 ][ !!! *23* !!! ]]
[[ string->long double ][ 52 ][ 83 ][ 32 ][ !!! *26* !!! ]]
[[ string->array<char, 50> ][ !!! *<1* !!! ][ 59 ][ 10 ][ 8 ]]
[[ string->string ][ !!! *1* !!! ][ 68 ][ 13 ][ --- ]]
[[ string->container::string ][ !!! *<1* !!! ][ 65 ][ 11 ][ --- ]]
[[ string->char ][ !!! *1* !!! ][ 58 ][ 10 ][ 7 ]]
[[ string->signed char ][ !!! *1* !!! ][ 57 ][ 10 ][ 10 ]]
[[ string->unsigned char ][ !!! *1* !!! ][ 57 ][ 10 ][ 10 ]]
[[ int->string ][ !!! *4* !!! ][ 64 ][ 13 ][ 10 ]]
[[ short->string ][ !!! *4* !!! ][ 69 ][ 13 ][ 10 ]]
[[ long int->string ][ !!! *4* !!! ][ 68 ][ 13 ][ 10 ]]
[[ long long->string ][ !!! *4* !!! ][ 66 ][ 13 ][ 10 ]]
[[ unsigned int->string ][ !!! *4* !!! ][ 62 ][ 14 ][ 10 ]]
[[ unsigned short->string ][ !!! *4* !!! ][ 66 ][ 13 ][ 10 ]]
[[ unsigned long int->string ][ !!! *4* !!! ][ 70 ][ 13 ][ 10 ]]
[[ unsigned long long->string ][ !!! *4* !!! ][ 64 ][ 14 ][ 10 ]]
[[ float->string ][ 26 ][ 108 ][ 50 ][ !!! *23* !!! ]]
[[ double->string ][ 33 ][ 114 ][ 51 ][ !!! *26* !!! ]]
[[ long double->string ][ 88 ][ 194 ][ 54 ][ !!! *26* !!! ]]
[[ char*->char ][ !!! *<1* !!! ][ 53 ][ 6 ][ 5 ]]
[[ char*->signed char ][ !!! *<1* !!! ][ 52 ][ 6 ][ 7 ]]
[[ char*->unsigned char ][ !!! *<1* !!! ][ 55 ][ 6 ][ 7 ]]
[[ char*->int ][ !!! *4* !!! ][ 67 ][ 12 ][ 10 ]]
[[ char*->short ][ !!! *4* !!! ][ 68 ][ 13 ][ 10 ]]
[[ char*->long int ][ !!! *3* !!! ][ 68 ][ 13 ][ 10 ]]
[[ char*->long long ][ !!! *3* !!! ][ 67 ][ 14 ][ 10 ]]
[[ char*->unsigned int ][ !!! *3* !!! ][ 67 ][ 11 ][ 10 ]]
[[ char*->unsigned short ][ !!! *3* !!! ][ 61 ][ 11 ][ 11 ]]
[[ char*->unsigned long int ][ !!! *3* !!! ][ 61 ][ 13 ][ 10 ]]
[[ char*->unsigned long long ][ !!! *3* !!! ][ 67 ][ 13 ][ 10 ]]
[[ char*->float ][ 56 ][ 93 ][ 35 ][ !!! *21* !!! ]]
[[ char*->double ][ 59 ][ 88 ][ 33 ][ !!! *21* !!! ]]
[[ char*->long double ][ 54 ][ 88 ][ 33 ][ !!! *24* !!! ]]
[[ char*->array<char, 50> ][ !!! *<1* !!! ][ 63 ][ 11 ][ 8 ]]
[[ char*->string ][ !!! *1* !!! ][ 65 ][ 12 ][ --- ]]
[[ char*->container::string ][ !!! *<1* !!! ][ 71 ][ 13 ][ --- ]]
[[ unsigned char*->char ][ !!! *<1* !!! ][ 57 ][ 6 ][ 5 ]]
[[ unsigned char*->signed char ][ !!! *<1* !!! ][ 57 ][ 6 ][ 7 ]]
[[ unsigned char*->unsigned char ][ !!! *<1* !!! ][ 63 ][ 5 ][ 6 ]]
[[ unsigned char*->int ][ !!! *4* !!! ][ 63 ][ 12 ][ 10 ]]
[[ unsigned char*->short ][ !!! *4* !!! ][ 65 ][ 13 ][ 10 ]]
[[ unsigned char*->long int ][ !!! *3* !!! ][ 67 ][ 12 ][ 10 ]]
[[ unsigned char*->long long ][ !!! *3* !!! ][ 66 ][ 12 ][ 10 ]]
[[ unsigned char*->unsigned int ][ !!! *3* !!! ][ 64 ][ 11 ][ 10 ]]
[[ unsigned char*->unsigned short ][ !!! *3* !!! ][ 65 ][ 12 ][ 10 ]]
[[ unsigned char*->unsigned long int ][ !!! *3* !!! ][ 60 ][ 13 ][ 10 ]]
[[ unsigned char*->unsigned long long ][ !!! *3* !!! ][ 62 ][ 12 ][ 10 ]]
[[ unsigned char*->float ][ 57 ][ 94 ][ 34 ][ !!! *21* !!! ]]
[[ unsigned char*->double ][ 60 ][ 88 ][ 35 ][ !!! *21* !!! ]]
[[ unsigned char*->long double ][ 54 ][ 89 ][ 32 ][ !!! *24* !!! ]]
[[ unsigned char*->array<char, 50> ][ !!! *<1* !!! ][ 68 ][ 12 ][ 8 ]]
[[ unsigned char*->string ][ !!! *1* !!! ][ 61 ][ 13 ][ --- ]]
[[ unsigned char*->container::string ][ !!! *<1* !!! ][ 66 ][ 12 ][ --- ]]
[[ signed char*->char ][ !!! *<1* !!! ][ 58 ][ 6 ][ 5 ]]
[[ signed char*->signed char ][ !!! *<1* !!! ][ 59 ][ 6 ][ 7 ]]
[[ signed char*->unsigned char ][ !!! *<1* !!! ][ 57 ][ 6 ][ 7 ]]
[[ signed char*->int ][ !!! *4* !!! ][ 68 ][ 12 ][ 10 ]]
[[ signed char*->short ][ !!! *4* !!! ][ 68 ][ 12 ][ 10 ]]
[[ signed char*->long int ][ !!! *3* !!! ][ 69 ][ 12 ][ 10 ]]
[[ signed char*->long long ][ !!! *3* !!! ][ 61 ][ 12 ][ 11 ]]
[[ signed char*->unsigned int ][ !!! *3* !!! ][ 59 ][ 11 ][ 10 ]]
[[ signed char*->unsigned short ][ !!! *3* !!! ][ 58 ][ 11 ][ 10 ]]
[[ signed char*->unsigned long int ][ !!! *3* !!! ][ 59 ][ 12 ][ 10 ]]
[[ signed char*->unsigned long long ][ !!! *3* !!! ][ 68 ][ 12 ][ 10 ]]
[[ signed char*->float ][ 55 ][ 93 ][ 39 ][ !!! *22* !!! ]]
[[ signed char*->double ][ 56 ][ 95 ][ 34 ][ !!! *23* !!! ]]
[[ signed char*->long double ][ 58 ][ 89 ][ 32 ][ !!! *23* !!! ]]
[[ signed char*->array<char, 50> ][ !!! *<1* !!! ][ 70 ][ 11 ][ 8 ]]
[[ signed char*->string ][ !!! *1* !!! ][ 64 ][ 15 ][ --- ]]
[[ signed char*->container::string ][ !!! *1* !!! ][ 67 ][ 13 ][ --- ]]
[[ iterator_range<char*>->char ][ !!! *<1* !!! ][ 62 ][ 6 ][ 7 ]]
[[ iterator_range<char*>->signed char ][ !!! *<1* !!! ][ 56 ][ 6 ][ 8 ]]
[[ iterator_range<char*>->unsigned char ][ !!! *<1* !!! ][ 57 ][ 5 ][ 11 ]]
[[ iterator_range<char*>->int ][ !!! *4* !!! ][ 75 ][ 16 ][ 12 ]]
[[ iterator_range<char*>->short ][ !!! *3* !!! ][ 69 ][ 16 ][ 12 ]]
[[ iterator_range<char*>->long int ][ !!! *3* !!! ][ 66 ][ 21 ][ 12 ]]
[[ iterator_range<char*>->long long ][ !!! *3* !!! ][ 70 ][ 15 ][ 12 ]]
[[ iterator_range<char*>->unsigned int ][ !!! *3* !!! ][ 67 ][ 16 ][ 12 ]]
[[ iterator_range<char*>->unsigned short ][ !!! *3* !!! ][ 64 ][ 14 ][ 12 ]]
[[ iterator_range<char*>->unsigned long int ][ !!! *3* !!! ][ 66 ][ 15 ][ 12 ]]
[[ iterator_range<char*>->unsigned long long ][ !!! *3* !!! ][ 72 ][ 17 ][ 12 ]]
[[ iterator_range<char*>->float ][ 55 ][ 100 ][ 42 ][ !!! *23* !!! ]]
[[ iterator_range<char*>->double ][ 54 ][ 100 ][ 40 ][ !!! *23* !!! ]]
[[ iterator_range<char*>->long double ][ 56 ][ 100 ][ 39 ][ !!! *25* !!! ]]
[[ iterator_range<char*>->array<char, 50> ][ !!! *<1* !!! ][ 69 ][ 20 ][ 10 ]]
[[ iterator_range<char*>->string ][ !!! *1* !!! ][ 72 ][ 21 ][ --- ]]
[[ iterator_range<char*>->container::string ][ !!! *<1* !!! ][ 82 ][ 21 ][ --- ]]
[[ std::string_view->char ][ !!! *<1* !!! ][ 65 ][ 5 ][ 8 ]]
[[ std::string_view->signed char ][ !!! *<1* !!! ][ 61 ][ 6 ][ 10 ]]
[[ std::string_view->unsigned char ][ !!! *<1* !!! ][ 56 ][ 5 ][ 9 ]]
[[ std::string_view->int ][ !!! *4* !!! ][ 59 ][ 12 ][ 14 ]]
[[ std::string_view->short ][ !!! *4* !!! ][ 63 ][ 12 ][ 14 ]]
[[ std::string_view->long int ][ !!! *4* !!! ][ 61 ][ 11 ][ 13 ]]
[[ std::string_view->long long ][ !!! *4* !!! ][ 58 ][ 13 ][ 14 ]]
[[ std::string_view->unsigned int ][ !!! *3* !!! ][ 65 ][ 10 ][ 13 ]]
[[ std::string_view->unsigned short ][ !!! *3* !!! ][ 64 ][ 10 ][ 14 ]]
[[ std::string_view->unsigned long int ][ !!! *3* !!! ][ 64 ][ 12 ][ 13 ]]
[[ std::string_view->unsigned long long ][ !!! *3* !!! ][ 65 ][ 11 ][ 14 ]]
[[ std::string_view->float ][ 55 ][ 89 ][ 35 ][ !!! *24* !!! ]]
[[ std::string_view->double ][ 53 ][ 87 ][ 36 ][ !!! *25* !!! ]]
[[ std::string_view->long double ][ 56 ][ 93 ][ 34 ][ !!! *28* !!! ]]
[[ std::string_view->array<char, 50> ][ !!! *1* !!! ][ 64 ][ 10 ][ 11 ]]
[[ std::string_view->string ][ !!! *1* !!! ][ 62 ][ 11 ][ --- ]]
[[ std::string_view->container::string ][ !!! *1* !!! ][ 65 ][ 11 ][ --- ]]
[[ array<char, 50>->char ][ !!! *<1* !!! ][ 54 ][ 6 ][ 5 ]]
[[ array<char, 50>->signed char ][ !!! *<1* !!! ][ 54 ][ 5 ][ 7 ]]
[[ array<char, 50>->unsigned char ][ !!! *<1* !!! ][ 53 ][ 6 ][ 6 ]]
[[ array<char, 50>->int ][ !!! *2* !!! ][ 59 ][ 12 ][ 10 ]]
[[ array<char, 50>->short ][ !!! *3* !!! ][ 58 ][ 12 ][ 10 ]]
[[ array<char, 50>->long int ][ !!! *3* !!! ][ 57 ][ 12 ][ 10 ]]
[[ array<char, 50>->long long ][ !!! *3* !!! ][ 60 ][ 12 ][ 10 ]]
[[ array<char, 50>->unsigned int ][ !!! *3* !!! ][ 60 ][ 11 ][ 10 ]]
[[ array<char, 50>->unsigned short ][ !!! *3* !!! ][ 58 ][ 11 ][ 10 ]]
[[ array<char, 50>->unsigned long int ][ !!! *3* !!! ][ 61 ][ 11 ][ 10 ]]
[[ array<char, 50>->unsigned long long ][ !!! *3* !!! ][ 59 ][ 12 ][ 10 ]]
[[ array<char, 50>->float ][ 52 ][ 89 ][ 35 ][ !!! *21* !!! ]]
[[ array<char, 50>->double ][ 50 ][ 91 ][ 33 ][ !!! *21* !!! ]]
[[ array<char, 50>->long double ][ 52 ][ 83 ][ 33 ][ !!! *23* !!! ]]
[[ array<char, 50>->array<char, 50> ][ !!! *<1* !!! ][ 59 ][ 11 ][ 8 ]]
[[ array<char, 50>->string ][ !!! *1* !!! ][ 66 ][ 13 ][ --- ]]
[[ array<char, 50>->container::string ][ !!! *1* !!! ][ 61 ][ 12 ][ --- ]]
[[ int->int ][ !!! *<1* !!! ][ 61 ][ 14 ][ --- ]]
[[ float->double ][ !!! *<1* !!! ][ 136 ][ 72 ][ --- ]]
[[ char->signed char ][ !!! *<1* !!! ][ 54 ][ 5 ][ --- ]]
]
[endsect]
[section Clang version 15.0.7 ]
[table:id Performance Table ( Clang version 15.0.7 )
[[From->To] [lexical_cast] [std::stringstream with construction] [std::stringstream without construction][scanf/printf]]
[[ string->char ][ !!! *<1* !!! ][ 68 ][ 5 ][ 6 ]]
[[ string->signed char ][ !!! *<1* !!! ][ 59 ][ 5 ][ 7 ]]
[[ string->unsigned char ][ !!! *<1* !!! ][ 59 ][ 5 ][ 7 ]]
[[ string->int ][ !!! *3* !!! ][ 69 ][ 11 ][ 10 ]]
[[ string->short ][ !!! *3* !!! ][ 64 ][ 11 ][ 10 ]]
[[ string->long int ][ !!! *3* !!! ][ 65 ][ 11 ][ 10 ]]
[[ string->long long ][ !!! *3* !!! ][ 68 ][ 13 ][ 10 ]]
[[ string->unsigned int ][ !!! *3* !!! ][ 65 ][ 10 ][ 10 ]]
[[ string->unsigned short ][ !!! *3* !!! ][ 64 ][ 10 ][ 10 ]]
[[ string->unsigned long int ][ !!! *3* !!! ][ 62 ][ 11 ][ 10 ]]
[[ string->unsigned long long ][ !!! *3* !!! ][ 64 ][ 11 ][ 10 ]]
[[ string->float ][ 55 ][ 90 ][ 33 ][ !!! *22* !!! ]]
[[ string->double ][ 56 ][ 89 ][ 32 ][ !!! *22* !!! ]]
[[ string->long double ][ 55 ][ 92 ][ 32 ][ !!! *23* !!! ]]
[[ string->array<char, 50> ][ !!! *<1* !!! ][ 66 ][ 10 ][ 8 ]]
[[ string->string ][ !!! *1* !!! ][ 66 ][ 12 ][ --- ]]
[[ string->container::string ][ !!! *<1* !!! ][ 66 ][ 15 ][ --- ]]
[[ string->char ][ !!! *<1* !!! ][ 61 ][ 9 ][ 1 ]]
[[ string->signed char ][ !!! *<1* !!! ][ 62 ][ 9 ][ 10 ]]
[[ string->unsigned char ][ !!! *<1* !!! ][ 59 ][ 9 ][ 10 ]]
[[ int->string ][ !!! *4* !!! ][ 63 ][ 13 ][ 9 ]]
[[ short->string ][ !!! *4* !!! ][ 69 ][ 13 ][ 10 ]]
[[ long int->string ][ !!! *4* !!! ][ 67 ][ 13 ][ 10 ]]
[[ long long->string ][ !!! *4* !!! ][ 65 ][ 13 ][ 10 ]]
[[ unsigned int->string ][ !!! *4* !!! ][ 66 ][ 13 ][ 10 ]]
[[ unsigned short->string ][ !!! *4* !!! ][ 67 ][ 13 ][ 10 ]]
[[ unsigned long int->string ][ !!! *4* !!! ][ 66 ][ 12 ][ 10 ]]
[[ unsigned long long->string ][ !!! *4* !!! ][ 67 ][ 13 ][ 10 ]]
[[ float->string ][ 25 ][ 108 ][ 47 ][ !!! *22* !!! ]]
[[ double->string ][ !!! *32* !!! ][ 130 ][ 116 ][ 56 ]]
[[ long double->string ][ 103 ][ 266 ][ 123 ][ !!! *64* !!! ]]
[[ char*->char ][ !!! *<1* !!! ][ 129 ][ 13 ][ 14 ]]
[[ char*->signed char ][ !!! *<1* !!! ][ 131 ][ 13 ][ 17 ]]
[[ char*->unsigned char ][ !!! *<1* !!! ][ 133 ][ 13 ][ 17 ]]
[[ char*->int ][ !!! *7* !!! ][ 154 ][ 32 ][ 26 ]]
[[ char*->short ][ !!! *7* !!! ][ 161 ][ 29 ][ 27 ]]
[[ char*->long int ][ !!! *7* !!! ][ 159 ][ 30 ][ 27 ]]
[[ char*->long long ][ !!! *7* !!! ][ 158 ][ 28 ][ 26 ]]
[[ char*->unsigned int ][ !!! *7* !!! ][ 146 ][ 26 ][ 26 ]]
[[ char*->unsigned short ][ !!! *7* !!! ][ 150 ][ 26 ][ 26 ]]
[[ char*->unsigned long int ][ !!! *7* !!! ][ 159 ][ 28 ][ 26 ]]
[[ char*->unsigned long long ][ !!! *7* !!! ][ 158 ][ 30 ][ 27 ]]
[[ char*->float ][ 123 ][ 207 ][ 78 ][ !!! *54* !!! ]]
[[ char*->double ][ 135 ][ 218 ][ 77 ][ !!! *54* !!! ]]
[[ char*->long double ][ 130 ][ 216 ][ 82 ][ !!! *59* !!! ]]
[[ char*->array<char, 50> ][ !!! *<1* !!! ][ 153 ][ 25 ][ 21 ]]
[[ char*->string ][ !!! *2* !!! ][ 159 ][ 31 ][ --- ]]
[[ char*->container::string ][ !!! *3* !!! ][ 151 ][ 15 ][ --- ]]
[[ unsigned char*->char ][ !!! *<1* !!! ][ 56 ][ 5 ][ 6 ]]
[[ unsigned char*->signed char ][ !!! *<1* !!! ][ 58 ][ 5 ][ 7 ]]
[[ unsigned char*->unsigned char ][ !!! *<1* !!! ][ 59 ][ 5 ][ 7 ]]
[[ unsigned char*->int ][ !!! *3* !!! ][ 58 ][ 12 ][ 11 ]]
[[ unsigned char*->short ][ !!! *3* !!! ][ 67 ][ 12 ][ 11 ]]
[[ unsigned char*->long int ][ !!! *3* !!! ][ 67 ][ 12 ][ 11 ]]
[[ unsigned char*->long long ][ !!! *3* !!! ][ 70 ][ 11 ][ 11 ]]
[[ unsigned char*->unsigned int ][ !!! *3* !!! ][ 60 ][ 10 ][ 10 ]]
[[ unsigned char*->unsigned short ][ !!! *3* !!! ][ 65 ][ 10 ][ 11 ]]
[[ unsigned char*->unsigned long int ][ !!! *3* !!! ][ 61 ][ 11 ][ 10 ]]
[[ unsigned char*->unsigned long long ][ !!! *3* !!! ][ 58 ][ 11 ][ 10 ]]
[[ unsigned char*->float ][ 51 ][ 88 ][ 32 ][ !!! *22* !!! ]]
[[ unsigned char*->double ][ 54 ][ 88 ][ 32 ][ !!! *22* !!! ]]
[[ unsigned char*->long double ][ 51 ][ 88 ][ 35 ][ !!! *24* !!! ]]
[[ unsigned char*->array<char, 50> ][ !!! *<1* !!! ][ 127 ][ 26 ][ 21 ]]
[[ unsigned char*->string ][ !!! *2* !!! ][ 90 ][ 11 ][ --- ]]
[[ unsigned char*->container::string ][ !!! *1* !!! ][ 62 ][ 15 ][ --- ]]
[[ signed char*->char ][ !!! *<1* !!! ][ 52 ][ 5 ][ 5 ]]
[[ signed char*->signed char ][ !!! *<1* !!! ][ 53 ][ 5 ][ 7 ]]
[[ signed char*->unsigned char ][ !!! *<1* !!! ][ 52 ][ 5 ][ 7 ]]
[[ signed char*->int ][ !!! *3* !!! ][ 60 ][ 12 ][ 11 ]]
[[ signed char*->short ][ !!! *3* !!! ][ 63 ][ 12 ][ 11 ]]
[[ signed char*->long int ][ !!! *3* !!! ][ 63 ][ 11 ][ 11 ]]
[[ signed char*->long long ][ !!! *3* !!! ][ 64 ][ 11 ][ 11 ]]
[[ signed char*->unsigned int ][ !!! *3* !!! ][ 60 ][ 10 ][ 10 ]]
[[ signed char*->unsigned short ][ !!! *3* !!! ][ 59 ][ 10 ][ 10 ]]
[[ signed char*->unsigned long int ][ !!! *2* !!! ][ 62 ][ 11 ][ 10 ]]
[[ signed char*->unsigned long long ][ !!! *3* !!! ][ 66 ][ 11 ][ 10 ]]
[[ signed char*->float ][ 51 ][ 86 ][ 32 ][ !!! *22* !!! ]]
[[ signed char*->double ][ 55 ][ 87 ][ 32 ][ !!! *22* !!! ]]
[[ signed char*->long double ][ 55 ][ 86 ][ 32 ][ !!! *24* !!! ]]
[[ signed char*->array<char, 50> ][ !!! *<1* !!! ][ 64 ][ 10 ][ 8 ]]
[[ signed char*->string ][ !!! *1* !!! ][ 62 ][ 12 ][ --- ]]
[[ signed char*->container::string ][ !!! *1* !!! ][ 66 ][ 15 ][ --- ]]
[[ iterator_range<char*>->char ][ !!! *<1* !!! ][ 53 ][ 5 ][ 5 ]]
[[ iterator_range<char*>->signed char ][ !!! *<1* !!! ][ 55 ][ 5 ][ 7 ]]
[[ iterator_range<char*>->unsigned char ][ !!! *<1* !!! ][ 57 ][ 5 ][ 7 ]]
[[ iterator_range<char*>->int ][ !!! *3* !!! ][ 67 ][ 15 ][ 11 ]]
[[ iterator_range<char*>->short ][ !!! *3* !!! ][ 96 ][ 37 ][ 27 ]]
[[ iterator_range<char*>->long int ][ !!! *7* !!! ][ 166 ][ 37 ][ 27 ]]
[[ iterator_range<char*>->long long ][ !!! *7* !!! ][ 150 ][ 37 ][ 26 ]]
[[ iterator_range<char*>->unsigned int ][ !!! *7* !!! ][ 158 ][ 34 ][ 26 ]]
[[ iterator_range<char*>->unsigned short ][ !!! *7* !!! ][ 170 ][ 36 ][ 26 ]]
[[ iterator_range<char*>->unsigned long int ][ !!! *7* !!! ][ 154 ][ 35 ][ 26 ]]
[[ iterator_range<char*>->unsigned long long ][ !!! *7* !!! ][ 158 ][ 36 ][ 26 ]]
[[ iterator_range<char*>->float ][ 122 ][ 233 ][ 100 ][ !!! *54* !!! ]]
[[ iterator_range<char*>->double ][ 134 ][ 245 ][ 97 ][ !!! *54* !!! ]]
[[ iterator_range<char*>->long double ][ 127 ][ 238 ][ 98 ][ !!! *59* !!! ]]
[[ iterator_range<char*>->array<char, 50> ][ !!! *<1* !!! ][ 159 ][ 42 ][ 21 ]]
[[ iterator_range<char*>->string ][ !!! *2* !!! ][ 165 ][ 50 ][ --- ]]
[[ iterator_range<char*>->container::string ][ !!! *1* !!! ][ 186 ][ 58 ][ --- ]]
[[ std::string_view->char ][ !!! *<1* !!! ][ 130 ][ 12 ][ 14 ]]
[[ std::string_view->signed char ][ !!! *<1* !!! ][ 128 ][ 12 ][ 18 ]]
[[ std::string_view->unsigned char ][ !!! *<1* !!! ][ 134 ][ 12 ][ 17 ]]
[[ std::string_view->int ][ !!! *7* !!! ][ 153 ][ 31 ][ 27 ]]
[[ std::string_view->short ][ !!! *7* !!! ][ 148 ][ 29 ][ 26 ]]
[[ std::string_view->long int ][ !!! *7* !!! ][ 150 ][ 28 ][ 26 ]]
[[ std::string_view->long long ][ !!! *7* !!! ][ 116 ][ 11 ][ 10 ]]
[[ std::string_view->unsigned int ][ !!! *2* !!! ][ 57 ][ 10 ][ 10 ]]
[[ std::string_view->unsigned short ][ !!! *3* !!! ][ 57 ][ 10 ][ 10 ]]
[[ std::string_view->unsigned long int ][ !!! *2* !!! ][ 66 ][ 11 ][ 10 ]]
[[ std::string_view->unsigned long long ][ !!! *2* !!! ][ 61 ][ 11 ][ 10 ]]
[[ std::string_view->float ][ 52 ][ 90 ][ 31 ][ !!! *22* !!! ]]
[[ std::string_view->double ][ 56 ][ 92 ][ 31 ][ !!! *22* !!! ]]
[[ std::string_view->long double ][ 56 ][ 95 ][ 32 ][ !!! *24* !!! ]]
[[ std::string_view->array<char, 50> ][ !!! *<1* !!! ][ 65 ][ 10 ][ 8 ]]
[[ std::string_view->string ][ !!! *1* !!! ][ 60 ][ 12 ][ --- ]]
[[ std::string_view->container::string ][ !!! *2* !!! ][ 67 ][ 14 ][ --- ]]
[[ array<char, 50>->char ][ !!! *<1* !!! ][ 53 ][ 5 ][ 6 ]]
[[ array<char, 50>->signed char ][ !!! *<1* !!! ][ 54 ][ 5 ][ 7 ]]
[[ array<char, 50>->unsigned char ][ !!! *<1* !!! ][ 53 ][ 5 ][ 7 ]]
[[ array<char, 50>->int ][ !!! *3* !!! ][ 63 ][ 12 ][ 11 ]]
[[ array<char, 50>->short ][ !!! *3* !!! ][ 62 ][ 12 ][ 11 ]]
[[ array<char, 50>->long int ][ !!! *3* !!! ][ 63 ][ 11 ][ 11 ]]
[[ array<char, 50>->long long ][ !!! *3* !!! ][ 60 ][ 11 ][ 11 ]]
[[ array<char, 50>->unsigned int ][ !!! *3* !!! ][ 57 ][ 10 ][ 11 ]]
[[ array<char, 50>->unsigned short ][ !!! *3* !!! ][ 65 ][ 11 ][ 11 ]]
[[ array<char, 50>->unsigned long int ][ !!! *3* !!! ][ 69 ][ 11 ][ 11 ]]
[[ array<char, 50>->unsigned long long ][ !!! *3* !!! ][ 68 ][ 11 ][ 10 ]]
[[ array<char, 50>->float ][ 54 ][ 82 ][ 32 ][ !!! *22* !!! ]]
[[ array<char, 50>->double ][ 57 ][ 93 ][ 32 ][ !!! *22* !!! ]]
[[ array<char, 50>->long double ][ 53 ][ 85 ][ 32 ][ !!! *23* !!! ]]
[[ array<char, 50>->array<char, 50> ][ !!! *<1* !!! ][ 60 ][ 10 ][ 8 ]]
[[ array<char, 50>->string ][ !!! *1* !!! ][ 61 ][ 11 ][ --- ]]
[[ array<char, 50>->container::string ][ !!! *1* !!! ][ 62 ][ 15 ][ --- ]]
[[ int->int ][ !!! *<1* !!! ][ 65 ][ 15 ][ --- ]]
[[ float->double ][ !!! *<1* !!! ][ 138 ][ 68 ][ --- ]]
[[ char->signed char ][ !!! *<1* !!! ][ 53 ][ 5 ][ --- ]]
]
[endsect]
[section GNU C++ version 10.5.0]
[table:id Performance Table ( GNU C++ version 10.5.0)
[[From->To] [lexical_cast] [std::stringstream with construction] [std::stringstream without construction][scanf/printf]]
[[ string->char ][ !!! *<1* !!! ][ 64 ][ 5 ][ 5 ]]
[[ string->signed char ][ !!! *<1* !!! ][ 51 ][ 5 ][ 7 ]]
[[ string->unsigned char ][ !!! *<1* !!! ][ 53 ][ 5 ][ 6 ]]
[[ string->int ][ !!! *3* !!! ][ 56 ][ 11 ][ 10 ]]
[[ string->short ][ !!! *3* !!! ][ 56 ][ 12 ][ 10 ]]
[[ string->long int ][ !!! *3* !!! ][ 58 ][ 13 ][ 10 ]]
[[ string->long long ][ !!! *3* !!! ][ 56 ][ 13 ][ 10 ]]
[[ string->unsigned int ][ !!! *3* !!! ][ 60 ][ 10 ][ 10 ]]
[[ string->unsigned short ][ !!! *3* !!! ][ 58 ][ 10 ][ 10 ]]
[[ string->unsigned long int ][ !!! *3* !!! ][ 59 ][ 12 ][ 10 ]]
[[ string->unsigned long long ][ !!! *3* !!! ][ 53 ][ 11 ][ 10 ]]
[[ string->float ][ 49 ][ 81 ][ 34 ][ !!! *21* !!! ]]
[[ string->double ][ 45 ][ 75 ][ 28 ][ !!! *21* !!! ]]
[[ string->long double ][ 46 ][ 76 ][ 30 ][ !!! *25* !!! ]]
[[ string->array<char, 50> ][ !!! *<1* !!! ][ 55 ][ 10 ][ 10 ]]
[[ string->string ][ !!! *1* !!! ][ 54 ][ 11 ][ --- ]]
[[ string->container::string ][ !!! *<1* !!! ][ 57 ][ 11 ][ --- ]]
[[ string->char ][ !!! *<1* !!! ][ 51 ][ 9 ][ 7 ]]
[[ string->signed char ][ !!! *<1* !!! ][ 51 ][ 10 ][ 10 ]]
[[ string->unsigned char ][ !!! *<1* !!! ][ 53 ][ 10 ][ 10 ]]
[[ int->string ][ !!! *3* !!! ][ 55 ][ 12 ][ 10 ]]
[[ short->string ][ !!! *3* !!! ][ 55 ][ 13 ][ 10 ]]
[[ long int->string ][ !!! *3* !!! ][ 55 ][ 12 ][ 10 ]]
[[ long long->string ][ !!! *3* !!! ][ 56 ][ 12 ][ 10 ]]
[[ unsigned int->string ][ !!! *3* !!! ][ 54 ][ 12 ][ 10 ]]
[[ unsigned short->string ][ !!! *3* !!! ][ 54 ][ 12 ][ 10 ]]
[[ unsigned long int->string ][ !!! *3* !!! ][ 55 ][ 12 ][ 10 ]]
[[ unsigned long long->string ][ !!! *3* !!! ][ 55 ][ 12 ][ 10 ]]
[[ float->string ][ 26 ][ 96 ][ 46 ][ !!! *25* !!! ]]
[[ double->string ][ 33 ][ 94 ][ 46 ][ !!! *23* !!! ]]
[[ long double->string ][ 44 ][ 96 ][ 52 ][ !!! *26* !!! ]]
[[ char*->char ][ !!! *<1* !!! ][ 48 ][ 5 ][ 5 ]]
[[ char*->signed char ][ !!! *<1* !!! ][ 47 ][ 5 ][ 7 ]]
[[ char*->unsigned char ][ !!! *<1* !!! ][ 47 ][ 5 ][ 6 ]]
[[ char*->int ][ !!! *3* !!! ][ 57 ][ 12 ][ 10 ]]
[[ char*->short ][ !!! *3* !!! ][ 55 ][ 12 ][ 10 ]]
[[ char*->long int ][ !!! *3* !!! ][ 59 ][ 11 ][ 10 ]]
[[ char*->long long ][ !!! *4* !!! ][ 61 ][ 11 ][ 10 ]]
[[ char*->unsigned int ][ !!! *3* !!! ][ 53 ][ 10 ][ 10 ]]
[[ char*->unsigned short ][ !!! *3* !!! ][ 53 ][ 10 ][ 10 ]]
[[ char*->unsigned long int ][ !!! *3* !!! ][ 54 ][ 11 ][ 10 ]]
[[ char*->unsigned long long ][ !!! *3* !!! ][ 55 ][ 11 ][ 10 ]]
[[ char*->float ][ 46 ][ 78 ][ 39 ][ !!! *21* !!! ]]
[[ char*->double ][ 43 ][ 73 ][ 28 ][ !!! *21* !!! ]]
[[ char*->long double ][ 46 ][ 74 ][ 30 ][ !!! *23* !!! ]]
[[ char*->array<char, 50> ][ !!! *<1* !!! ][ 52 ][ 10 ][ 8 ]]
[[ char*->string ][ !!! *1* !!! ][ 58 ][ 11 ][ --- ]]
[[ char*->container::string ][ !!! *<1* !!! ][ 64 ][ 11 ][ --- ]]
[[ unsigned char*->char ][ !!! *<1* !!! ][ 47 ][ 5 ][ 5 ]]
[[ unsigned char*->signed char ][ !!! *<1* !!! ][ 47 ][ 5 ][ 7 ]]
[[ unsigned char*->unsigned char ][ !!! *<1* !!! ][ 47 ][ 5 ][ 7 ]]
[[ unsigned char*->int ][ !!! *3* !!! ][ 55 ][ 12 ][ 12 ]]
[[ unsigned char*->short ][ !!! *4* !!! ][ 59 ][ 11 ][ 10 ]]
[[ unsigned char*->long int ][ !!! *3* !!! ][ 56 ][ 12 ][ 10 ]]
[[ unsigned char*->long long ][ !!! *3* !!! ][ 55 ][ 12 ][ 10 ]]
[[ unsigned char*->unsigned int ][ !!! *3* !!! ][ 53 ][ 10 ][ 10 ]]
[[ unsigned char*->unsigned short ][ !!! *3* !!! ][ 54 ][ 10 ][ 10 ]]
[[ unsigned char*->unsigned long int ][ !!! *3* !!! ][ 54 ][ 11 ][ 10 ]]
[[ unsigned char*->unsigned long long ][ !!! *3* !!! ][ 55 ][ 11 ][ 10 ]]
[[ unsigned char*->float ][ 100 ][ 143 ][ 33 ][ !!! *21* !!! ]]
[[ unsigned char*->double ][ 44 ][ 73 ][ 28 ][ !!! *22* !!! ]]
[[ unsigned char*->long double ][ 46 ][ 75 ][ 30 ][ !!! *23* !!! ]]
[[ unsigned char*->array<char, 50> ][ !!! *<1* !!! ][ 53 ][ 11 ][ 8 ]]
[[ unsigned char*->string ][ !!! *1* !!! ][ 58 ][ 11 ][ --- ]]
[[ unsigned char*->container::string ][ !!! *<1* !!! ][ 59 ][ 11 ][ --- ]]
[[ signed char*->char ][ !!! *<1* !!! ][ 47 ][ 5 ][ 5 ]]
[[ signed char*->signed char ][ !!! *<1* !!! ][ 47 ][ 5 ][ 7 ]]
[[ signed char*->unsigned char ][ !!! *<1* !!! ][ 51 ][ 5 ][ 6 ]]
[[ signed char*->int ][ !!! *3* !!! ][ 55 ][ 12 ][ 10 ]]
[[ signed char*->short ][ !!! *4* !!! ][ 56 ][ 12 ][ 10 ]]
[[ signed char*->long int ][ !!! *4* !!! ][ 56 ][ 11 ][ 10 ]]
[[ signed char*->long long ][ !!! *3* !!! ][ 55 ][ 11 ][ 10 ]]
[[ signed char*->unsigned int ][ !!! *3* !!! ][ 60 ][ 10 ][ 10 ]]
[[ signed char*->unsigned short ][ !!! *3* !!! ][ 53 ][ 10 ][ 10 ]]
[[ signed char*->unsigned long int ][ !!! *3* !!! ][ 54 ][ 11 ][ 10 ]]
[[ signed char*->unsigned long long ][ !!! *6* !!! ][ 58 ][ 11 ][ 10 ]]
[[ signed char*->float ][ 47 ][ 76 ][ 32 ][ !!! *21* !!! ]]
[[ signed char*->double ][ 44 ][ 73 ][ 29 ][ !!! *21* !!! ]]
[[ signed char*->long double ][ 45 ][ 74 ][ 31 ][ !!! *24* !!! ]]
[[ signed char*->array<char, 50> ][ !!! *<1* !!! ][ 52 ][ 11 ][ 8 ]]
[[ signed char*->string ][ !!! *1* !!! ][ 58 ][ 11 ][ --- ]]
[[ signed char*->container::string ][ !!! *<1* !!! ][ 59 ][ 11 ][ --- ]]
[[ iterator_range<char*>->char ][ !!! *<1* !!! ][ 47 ][ 5 ][ 5 ]]
[[ iterator_range<char*>->signed char ][ !!! *<1* !!! ][ 47 ][ 5 ][ 7 ]]
[[ iterator_range<char*>->unsigned char ][ !!! *<1* !!! ][ 53 ][ 5 ][ 6 ]]
[[ iterator_range<char*>->int ][ !!! *3* !!! ][ 58 ][ 15 ][ 10 ]]
[[ iterator_range<char*>->short ][ !!! *3* !!! ][ 59 ][ 16 ][ 10 ]]
[[ iterator_range<char*>->long int ][ !!! *3* !!! ][ 58 ][ 15 ][ 10 ]]
[[ iterator_range<char*>->long long ][ !!! *3* !!! ][ 59 ][ 15 ][ 10 ]]
[[ iterator_range<char*>->unsigned int ][ !!! *3* !!! ][ 56 ][ 14 ][ 10 ]]
[[ iterator_range<char*>->unsigned short ][ !!! *3* !!! ][ 61 ][ 14 ][ 10 ]]
[[ iterator_range<char*>->unsigned long int ][ !!! *3* !!! ][ 58 ][ 14 ][ 10 ]]
[[ iterator_range<char*>->unsigned long long ][ !!! *3* !!! ][ 71 ][ 36 ][ 25 ]]
[[ iterator_range<char*>->float ][ 116 ][ 93 ][ 39 ][ !!! *21* !!! ]]
[[ iterator_range<char*>->double ][ 43 ][ 81 ][ 34 ][ !!! *21* !!! ]]
[[ iterator_range<char*>->long double ][ 44 ][ 87 ][ 37 ][ !!! *24* !!! ]]
[[ iterator_range<char*>->array<char, 50> ][ !!! *<1* !!! ][ 58 ][ 17 ][ 8 ]]
[[ iterator_range<char*>->string ][ !!! *1* !!! ][ 63 ][ 20 ][ --- ]]
[[ iterator_range<char*>->container::string ][ !!! *<1* !!! ][ 65 ][ 20 ][ --- ]]
[[ std::string_view->char ][ !!! *<1* !!! ][ 46 ][ 5 ][ 5 ]]
[[ std::string_view->signed char ][ !!! *<1* !!! ][ 47 ][ 5 ][ 7 ]]
[[ std::string_view->unsigned char ][ !!! *<1* !!! ][ 47 ][ 5 ][ 7 ]]
[[ std::string_view->int ][ !!! *4* !!! ][ 56 ][ 11 ][ 10 ]]
[[ std::string_view->short ][ !!! *3* !!! ][ 55 ][ 12 ][ 10 ]]
[[ std::string_view->long int ][ !!! *4* !!! ][ 54 ][ 11 ][ 10 ]]
[[ std::string_view->long long ][ !!! *4* !!! ][ 54 ][ 11 ][ 10 ]]
[[ std::string_view->unsigned int ][ !!! *3* !!! ][ 53 ][ 10 ][ 10 ]]
[[ std::string_view->unsigned short ][ !!! *3* !!! ][ 54 ][ 10 ][ 10 ]]
[[ std::string_view->unsigned long int ][ !!! *3* !!! ][ 54 ][ 11 ][ 10 ]]
[[ std::string_view->unsigned long long ][ !!! *3* !!! ][ 55 ][ 11 ][ 10 ]]
[[ std::string_view->float ][ 47 ][ 76 ][ 32 ][ !!! *22* !!! ]]
[[ std::string_view->double ][ 43 ][ 74 ][ 28 ][ !!! *21* !!! ]]
[[ std::string_view->long double ][ 46 ][ 75 ][ 31 ][ !!! *24* !!! ]]
[[ std::string_view->array<char, 50> ][ !!! *1* !!! ][ 51 ][ 10 ][ 8 ]]
[[ std::string_view->string ][ !!! *2* !!! ][ 53 ][ 10 ][ --- ]]
[[ std::string_view->container::string ][ !!! *1* !!! ][ 56 ][ 11 ][ --- ]]
[[ array<char, 50>->char ][ !!! *<1* !!! ][ 47 ][ 5 ][ 5 ]]
[[ array<char, 50>->signed char ][ !!! *<1* !!! ][ 47 ][ 5 ][ 6 ]]
[[ array<char, 50>->unsigned char ][ !!! *<1* !!! ][ 49 ][ 5 ][ 6 ]]
[[ array<char, 50>->int ][ !!! *3* !!! ][ 54 ][ 12 ][ 10 ]]
[[ array<char, 50>->short ][ !!! *3* !!! ][ 61 ][ 11 ][ 10 ]]
[[ array<char, 50>->long int ][ !!! *3* !!! ][ 55 ][ 11 ][ 10 ]]
[[ array<char, 50>->long long ][ !!! *3* !!! ][ 54 ][ 11 ][ 10 ]]
[[ array<char, 50>->unsigned int ][ !!! *3* !!! ][ 53 ][ 10 ][ 10 ]]
[[ array<char, 50>->unsigned short ][ !!! *3* !!! ][ 52 ][ 10 ][ 10 ]]
[[ array<char, 50>->unsigned long int ][ !!! *3* !!! ][ 62 ][ 11 ][ 10 ]]
[[ array<char, 50>->unsigned long long ][ !!! *3* !!! ][ 54 ][ 11 ][ 10 ]]
[[ array<char, 50>->float ][ 45 ][ 75 ][ 35 ][ !!! *24* !!! ]]
[[ array<char, 50>->double ][ 44 ][ 75 ][ 28 ][ !!! *21* !!! ]]
[[ array<char, 50>->long double ][ 45 ][ 76 ][ 29 ][ !!! *24* !!! ]]
[[ array<char, 50>->array<char, 50> ][ !!! *<1* !!! ][ 53 ][ 10 ][ 8 ]]
[[ array<char, 50>->string ][ !!! *1* !!! ][ 54 ][ 11 ][ --- ]]
[[ array<char, 50>->container::string ][ !!! *1* !!! ][ 56 ][ 12 ][ --- ]]
[[ int->int ][ !!! *<1* !!! ][ 58 ][ 13 ][ --- ]]
[[ float->double ][ !!! *<1* !!! ][ 116 ][ 63 ][ --- ]]
[[ char->signed char ][ !!! *<1* !!! ][ 47 ][ 5 ][ --- ]]
]
[endsect]
[/ END of section, generated by performance measuring program ]
[endsect]
-36
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@@ -1,36 +0,0 @@
// Copyright Antony Polukhin, 2013-2026.
// Distributed under the Boost Software License, Version 1.0.
// (See the accompanying file LICENSE_1_0.txt
// or a copy at <http://www.boost.org/LICENSE_1_0.txt>.)
//[lexical_cast_args_example
//`The following example treats command line arguments as a sequence of numeric data
#include <vector>
#include <boost/lexical_cast.hpp>
int main(int /*argc*/, char * argv[])
{
using boost::lexical_cast;
using boost::bad_lexical_cast;
std::vector<short> args;
while (*++argv)
{
try
{
args.push_back(lexical_cast<short>(*argv));
}
catch(const bad_lexical_cast &)
{
args.push_back(0);
}
}
// ...
}
//] [/lexical_cast_args_example]
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// Copyright Antony Polukhin, 2013-2026.
// Distributed under the Boost Software License, Version 1.0.
// (See the accompanying file LICENSE_1_0.txt
// or a copy at <http://www.boost.org/LICENSE_1_0.txt>.)
#include <boost/config.hpp>
#ifdef BOOST_MSVC
# pragma warning(disable: 4512) // generic_stringize.cpp(37) : warning C4512: 'stringize_functor' : assignment operator could not be generated
#endif
//[lexical_cast_stringize
/*`
In this example we'll make a `stringize` method that accepts a sequence, converts
each element of the sequence into string and appends that string to the result.
Example is based on the example from the Boost C++ Application Development Cookbook
by Antony Polukhin, ISBN 9781849514880. Russian translation: [@https://dmkpress.com/catalog/computer/programming/c/978-5-97060-868-5/ ISBN: 9785970608685].
Step 1: Making a functor that converts any type to a string and remembers result:
*/
#include <string>
#include <boost/fusion/include/for_each.hpp>
#include <boost/fusion/adapted/std_tuple.hpp>
#include <boost/fusion/adapted/std_pair.hpp>
#include <boost/lexical_cast.hpp>
struct stringize_functor {
private:
std::string& result;
public:
explicit stringize_functor(std::string& res)
: result(res)
{}
template <class T>
void operator()(const T& v) const {
result += boost::lexical_cast<std::string>(v);
}
};
//` Step 2: Applying `stringize_functor` to each element in sequence:
template <class Sequence>
std::string stringize(const Sequence& seq) {
std::string result;
boost::fusion::for_each(seq, stringize_functor(result));
return result;
}
//` Step 3: Using the `stringize` with different types:
int main() {
std::tuple<char, int, char, int> decim('-', 10, 'e', 5);
if (stringize(decim) != "-10e5") {
return 1;
}
std::pair<int, std::string> value_and_type(270, "Kelvin");
if (stringize(value_and_type) != "270Kelvin") {
return 2;
}
return 0;
}
//] [/lexical_cast_stringize]
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// Copyright Antony Polukhin, 2013-2026.
// Distributed under the Boost Software License, Version 1.0.
// (See the accompanying file LICENSE_1_0.txt
// or a copy at <http://www.boost.org/LICENSE_1_0.txt>.)
#include <array>
#include <string>
#include <string.h>
#include <cstdio>
#include <boost/lexical_cast.hpp>
#ifdef BOOST_MSVC
# pragma warning(disable: 4996) // `strerror` is not safe
#endif
//[lexical_cast_log_errno
//`The following example uses numeric data in a string expression:
void log_message(const std::string &);
void log_errno(int yoko)
{
log_message("Error " + boost::lexical_cast<std::string>(yoko) + ": " + strerror(yoko));
}
//] [/lexical_cast_log_errno]
//[lexical_cast_fixed_buffer
//`The following example converts some number and puts it to file:
void number_to_file(int number, std::FILE* file)
{
using buf_t = std::array<char, 50>;
buf_t buffer = boost::lexical_cast<buf_t>(number); // No dynamic memory allocation
std::fputs(buffer.data(), file);
}
//] [/lexical_cast_fixed_buffer]
//[lexical_cast_substring_conversion
//`The following example takes part of the string and converts it to `int`:
int convert_strings_part(const std::string& s, std::size_t pos, std::size_t n)
{
return boost::lexical_cast<int>(s.data() + pos, n);
}
//] [/lexical_cast_substring_conversion]
void log_message(const std::string &) {}
int main()
{
return 0;
}
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@@ -1,46 +0,0 @@
// Copyright Antony Polukhin, 2013-2026.
// Distributed under the Boost Software License, Version 1.0.
// (See the accompanying file LICENSE_1_0.txt
// or a copy at <http://www.boost.org/LICENSE_1_0.txt>.)
//[lexical_cast_variant_to_long_double
/*`
In this example we'll make a `to_long_double` method that converts value of the Boost.Variant to `long double`.
*/
#ifdef BOOST_USE_MODULES
#include <compare>
#endif
#include <boost/variant.hpp>
#include <boost/lexical_cast.hpp>
struct to_long_double_functor: boost::static_visitor<long double> {
template <class T>
long double operator()(const T& v) const {
// Lexical cast has many optimizations including optimizations for situations that usually
// occur in generic programming, like std::string to std::string or arithmetic type to arithmetic type conversion.
return boost::lexical_cast<long double>(v);
}
};
// Throws `boost::bad_lexical_cast` if value of the variant is not convertible to `long double`
template <class Variant>
long double to_long_double(const Variant& v) {
return boost::apply_visitor(to_long_double_functor(), v);
}
int main() {
boost::variant<char, int, std::string> v1('0'), v2("10.0001"), v3(1);
const long double sum = to_long_double(v1) + to_long_double(v2) + to_long_double(v3);
if (11 < sum && sum < 11.1) {
return 0; // OK, as expected
};
return 1; // FAIL
}
//] [/lexical_cast_variant_to_long_double]
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// boost cast.hpp header file ----------------------------------------------//
// (C) Copyright Kevlin Henney and Dave Abrahams 1999.
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// See http://www.boost.org/libs/conversion for Documentation.
// Revision History
// 02 Apr 01 Removed BOOST_NO_LIMITS workarounds and included
// <boost/limits.hpp> instead (the workaround did not
// actually compile when BOOST_NO_LIMITS was defined in
// any case, so we loose nothing). (John Maddock)
// 21 Jan 01 Undid a bug I introduced yesterday. numeric_cast<> never
// worked with stock GCC; trying to get it to do that broke
// vc-stlport.
// 20 Jan 01 Moved BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS to config.hpp.
// Removed unused BOOST_EXPLICIT_TARGET macro. Moved
// boost::detail::type to boost/type.hpp. Made it compile with
// stock gcc again (Dave Abrahams)
// 29 Nov 00 Remove nested namespace cast, cleanup spacing before Formal
// Review (Beman Dawes)
// 19 Oct 00 Fix numeric_cast for floating-point types (Dave Abrahams)
// 15 Jul 00 Suppress numeric_cast warnings for GCC, Borland and MSVC
// (Dave Abrahams)
// 30 Jun 00 More MSVC6 wordarounds. See comments below. (Dave Abrahams)
// 28 Jun 00 Removed implicit_cast<>. See comment below. (Beman Dawes)
// 27 Jun 00 More MSVC6 workarounds
// 15 Jun 00 Add workarounds for MSVC6
// 2 Feb 00 Remove bad_numeric_cast ";" syntax error (Doncho Angelov)
// 26 Jan 00 Add missing throw() to bad_numeric_cast::what(0 (Adam Levar)
// 29 Dec 99 Change using declarations so usages in other namespaces work
// correctly (Dave Abrahams)
// 23 Sep 99 Change polymorphic_downcast assert to also detect M.I. errors
// as suggested Darin Adler and improved by Valentin Bonnard.
// 2 Sep 99 Remove controversial asserts, simplify, rename.
// 30 Aug 99 Move to cast.hpp, replace value_cast with numeric_cast,
// place in nested namespace.
// 3 Aug 99 Initial version
#ifndef BOOST_CAST_HPP
#define BOOST_CAST_HPP
# include <boost/config.hpp>
# include <cassert>
# include <typeinfo>
# include <boost/type.hpp>
# include <boost/limits.hpp>
# include <boost/detail/select_type.hpp>
// It has been demonstrated numerous times that MSVC 6.0 fails silently at link
// time if you use a template function which has template parameters that don't
// appear in the function's argument list.
//
// TODO: Add this to config.hpp?
# if defined(BOOST_MSVC) && BOOST_MSVC <= 1200 // 1200 = VC6
# define BOOST_EXPLICIT_DEFAULT_TARGET , ::boost::type<Target>* = 0
# else
# define BOOST_EXPLICIT_DEFAULT_TARGET
# endif
namespace boost
{
// See the documentation for descriptions of how to choose between
// static_cast<>, dynamic_cast<>, polymorphic_cast<> and polymorphic_downcast<>
// polymorphic_cast --------------------------------------------------------//
// Runtime checked polymorphic downcasts and crosscasts.
// Suggested in The C++ Programming Language, 3rd Ed, Bjarne Stroustrup,
// section 15.8 exercise 1, page 425.
template <class Target, class Source>
inline Target polymorphic_cast(Source* x BOOST_EXPLICIT_DEFAULT_TARGET)
{
Target tmp = dynamic_cast<Target>(x);
if ( tmp == 0 ) throw std::bad_cast();
return tmp;
}
// polymorphic_downcast ----------------------------------------------------//
// assert() checked polymorphic downcast. Crosscasts prohibited.
// WARNING: Because this cast uses assert(), it violates the One Definition
// Rule if NDEBUG is inconsistently defined across translation units.
// Contributed by Dave Abrahams
template <class Target, class Source>
inline Target polymorphic_downcast(Source* x BOOST_EXPLICIT_DEFAULT_TARGET)
{
assert( dynamic_cast<Target>(x) == x ); // detect logic error
return static_cast<Target>(x);
}
// implicit_cast -----------------------------------------------------------//
//
// Removed due to uncertain purpose. Use either numeric_cast (see below)
// or static_cast according to the need.
// numeric_cast and related exception --------------------------------------//
// Contributed by Kevlin Henney
// bad_numeric_cast --------------------------------------------------------//
// exception used to indicate runtime numeric_cast failure
class bad_numeric_cast : public std::bad_cast
{
public:
// constructors, destructors and assignment operator defaulted
// function inlined for brevity and consistency with rest of library
virtual const char *what() const throw()
{
return "bad numeric cast: loss of range in numeric_cast";
}
};
// numeric_cast ------------------------------------------------------------//
#if !defined(BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS) || defined(BOOST_SGI_CPP_LIMITS)
namespace detail
{
template <class T>
struct signed_numeric_limits : std::numeric_limits<T>
{
static inline T min BOOST_PREVENT_MACRO_SUBSTITUTION ()
{
return (std::numeric_limits<T>::min)() >= 0
// unary minus causes integral promotion, thus the static_cast<>
? static_cast<T>(-(std::numeric_limits<T>::max)())
: (std::numeric_limits<T>::min)();
};
};
// Move to namespace boost in utility.hpp?
template <class T, bool specialized>
struct fixed_numeric_limits_base
: public if_true< std::numeric_limits<T>::is_signed >
::BOOST_NESTED_TEMPLATE then< signed_numeric_limits<T>,
std::numeric_limits<T>
>::type
{};
template <class T>
struct fixed_numeric_limits
: fixed_numeric_limits_base<T,(std::numeric_limits<T>::is_specialized)>
{};
# ifdef BOOST_HAS_LONG_LONG
// cover implementations which supply no specialization for long
// long / unsigned long long. Not intended to be full
// numeric_limits replacements, but good enough for numeric_cast<>
template <>
struct fixed_numeric_limits_base< ::boost::long_long_type, false>
{
BOOST_STATIC_CONSTANT(bool, is_specialized = true);
BOOST_STATIC_CONSTANT(bool, is_signed = true);
static ::boost::long_long_type max BOOST_PREVENT_MACRO_SUBSTITUTION ()
{
# ifdef LONGLONG_MAX
return LONGLONG_MAX;
# else
return 9223372036854775807LL; // hope this is portable
# endif
}
static ::boost::long_long_type min BOOST_PREVENT_MACRO_SUBSTITUTION ()
{
# ifdef LONGLONG_MIN
return LONGLONG_MIN;
# else
return -( 9223372036854775807LL )-1; // hope this is portable
# endif
}
};
template <>
struct fixed_numeric_limits_base< ::boost::ulong_long_type, false>
{
BOOST_STATIC_CONSTANT(bool, is_specialized = true);
BOOST_STATIC_CONSTANT(bool, is_signed = false);
static ::boost::ulong_long_type max BOOST_PREVENT_MACRO_SUBSTITUTION ()
{
# ifdef ULONGLONG_MAX
return ULONGLONG_MAX;
# else
return 0xffffffffffffffffULL; // hope this is portable
# endif
}
static ::boost::ulong_long_type min BOOST_PREVENT_MACRO_SUBSTITUTION () { return 0; }
};
# endif
} // namespace detail
// less_than_type_min -
// x_is_signed should be numeric_limits<X>::is_signed
// y_is_signed should be numeric_limits<Y>::is_signed
// y_min should be numeric_limits<Y>::min()
//
// check(x, y_min) returns true iff x < y_min without invoking comparisons
// between signed and unsigned values.
//
// "poor man's partial specialization" is in use here.
template <bool x_is_signed, bool y_is_signed>
struct less_than_type_min
{
template <class X, class Y>
static bool check(X x, Y y_min)
{ return x < y_min; }
};
template <>
struct less_than_type_min<false, true>
{
template <class X, class Y>
static bool check(X, Y)
{ return false; }
};
template <>
struct less_than_type_min<true, false>
{
template <class X, class Y>
static bool check(X x, Y)
{ return x < 0; }
};
// greater_than_type_max -
// same_sign should be:
// numeric_limits<X>::is_signed == numeric_limits<Y>::is_signed
// y_max should be numeric_limits<Y>::max()
//
// check(x, y_max) returns true iff x > y_max without invoking comparisons
// between signed and unsigned values.
//
// "poor man's partial specialization" is in use here.
template <bool same_sign, bool x_is_signed>
struct greater_than_type_max;
template<>
struct greater_than_type_max<true, true>
{
template <class X, class Y>
static inline bool check(X x, Y y_max)
{ return x > y_max; }
};
template <>
struct greater_than_type_max<false, true>
{
// What does the standard say about this? I think it's right, and it
// will work with every compiler I know of.
template <class X, class Y>
static inline bool check(X x, Y)
{ return x >= 0 && static_cast<X>(static_cast<Y>(x)) != x; }
# if defined(BOOST_MSVC) && BOOST_MSVC <= 1200
// MSVC6 can't static_cast unsigned __int64 -> floating types
# define BOOST_UINT64_CAST(src_type) \
static inline bool check(src_type x, unsigned __int64) \
{ \
if (x < 0) return false; \
unsigned __int64 y = static_cast<unsigned __int64>(x); \
bool odd = y & 0x1; \
__int64 div2 = static_cast<__int64>(y >> 1); \
return ((static_cast<src_type>(div2) * 2.0) + odd) != x; \
}
BOOST_UINT64_CAST(long double);
BOOST_UINT64_CAST(double);
BOOST_UINT64_CAST(float);
# undef BOOST_UINT64_CAST
# endif
};
template<>
struct greater_than_type_max<true, false>
{
template <class X, class Y>
static inline bool check(X x, Y y_max)
{ return x > y_max; }
};
template <>
struct greater_than_type_max<false, false>
{
// What does the standard say about this? I think it's right, and it
// will work with every compiler I know of.
template <class X, class Y>
static inline bool check(X x, Y)
{ return static_cast<X>(static_cast<Y>(x)) != x; }
};
#else // use #pragma hacks if available
namespace detail
{
# if BOOST_MSVC
# pragma warning(push)
# pragma warning(disable : 4018)
# pragma warning(disable : 4146)
#elif defined(__BORLANDC__)
# pragma option push -w-8041
# endif
// Move to namespace boost in utility.hpp?
template <class T>
struct fixed_numeric_limits : public std::numeric_limits<T>
{
static inline T min BOOST_PREVENT_MACRO_SUBSTITUTION ()
{
return std::numeric_limits<T>::is_signed && (std::numeric_limits<T>::min)() >= 0
? T(-(std::numeric_limits<T>::max)()) : (std::numeric_limits<T>::min)();
}
};
# if BOOST_MSVC
# pragma warning(pop)
#elif defined(__BORLANDC__)
# pragma option pop
# endif
} // namespace detail
#endif
template<typename Target, typename Source>
inline Target numeric_cast(Source arg BOOST_EXPLICIT_DEFAULT_TARGET)
{
// typedefs abbreviating respective trait classes
typedef detail::fixed_numeric_limits<Source> arg_traits;
typedef detail::fixed_numeric_limits<Target> result_traits;
#if defined(BOOST_STRICT_CONFIG) \
|| (!defined(__HP_aCC) || __HP_aCC > 33900) \
&& (!defined(BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS) \
|| defined(BOOST_SGI_CPP_LIMITS))
// typedefs that act as compile time assertions
// (to be replaced by boost compile time assertions
// as and when they become available and are stable)
typedef bool argument_must_be_numeric[arg_traits::is_specialized];
typedef bool result_must_be_numeric[result_traits::is_specialized];
const bool arg_is_signed = arg_traits::is_signed;
const bool result_is_signed = result_traits::is_signed;
const bool same_sign = arg_is_signed == result_is_signed;
if (less_than_type_min<arg_is_signed, result_is_signed>::check(arg, (result_traits::min)())
|| greater_than_type_max<same_sign, arg_is_signed>::check(arg, (result_traits::max)())
)
#else // We need to use #pragma hacks if available
# if BOOST_MSVC
# pragma warning(push)
# pragma warning(disable : 4018)
#elif defined(__BORLANDC__)
#pragma option push -w-8012
# endif
if ((arg < 0 && !result_traits::is_signed) // loss of negative range
|| (arg_traits::is_signed && arg < (result_traits::min)()) // underflow
|| arg > (result_traits::max)()) // overflow
# if BOOST_MSVC
# pragma warning(pop)
#elif defined(__BORLANDC__)
#pragma option pop
# endif
#endif
{
throw bad_numeric_cast();
}
return static_cast<Target>(arg);
} // numeric_cast
# undef BOOST_EXPLICIT_DEFAULT_TARGET
} // namespace boost
#endif // BOOST_CAST_HPP
-134
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@@ -1,134 +0,0 @@
//-----------------------------------------------------------------------------
// boost detail/templated_streams.hpp header file
// See http://www.boost.org for updates, documentation, and revision history.
//-----------------------------------------------------------------------------
//
// Copyright (c) 2013 John Maddock, Antony Polukhin
//
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_DETAIL_BASIC_POINTERBUF_HPP
#define BOOST_DETAIL_BASIC_POINTERBUF_HPP
// MS compatible compilers support #pragma once
#if defined(_MSC_VER)
# pragma once
#endif
#include <boost/config.hpp>
#include <streambuf>
namespace boost { namespace detail {
//
// class basic_pointerbuf:
// acts as a stream buffer which wraps around a pair of pointers:
//
template <class charT, class BufferT >
class basic_pointerbuf : public BufferT {
protected:
typedef BufferT base_type;
typedef basic_pointerbuf<charT, BufferT> this_type;
typedef typename base_type::int_type int_type;
typedef typename base_type::char_type char_type;
typedef typename base_type::pos_type pos_type;
typedef ::std::streamsize streamsize;
typedef typename base_type::off_type off_type;
public:
basic_pointerbuf() : base_type() { this_type::setbuf(0, 0); }
const charT* getnext() { return this->gptr(); }
using base_type::pptr;
using base_type::pbase;
protected:
// VC mistakenly assumes that `setbuf` and other functions are not referenced.
// Marking those functions with `inline` suppresses the warnings.
// There must be no harm from marking virtual functions as inline: inline virtual
// call can be inlined ONLY when the compiler knows the "exact class".
inline base_type* setbuf(char_type* s, streamsize n) BOOST_OVERRIDE;
inline typename this_type::pos_type seekpos(pos_type sp, ::std::ios_base::openmode which) BOOST_OVERRIDE;
inline typename this_type::pos_type seekoff(off_type off, ::std::ios_base::seekdir way, ::std::ios_base::openmode which) BOOST_OVERRIDE;
private:
basic_pointerbuf& operator=(const basic_pointerbuf&);
basic_pointerbuf(const basic_pointerbuf&);
};
template<class charT, class BufferT>
BufferT*
basic_pointerbuf<charT, BufferT>::setbuf(char_type* s, streamsize n)
{
this->setg(s, s, s + n);
return this;
}
template<class charT, class BufferT>
typename basic_pointerbuf<charT, BufferT>::pos_type
basic_pointerbuf<charT, BufferT>::seekoff(off_type off, ::std::ios_base::seekdir way, ::std::ios_base::openmode which)
{
typedef ::std::ios_base::seekdir cast_type;
if(which & ::std::ios_base::out)
return pos_type(off_type(-1));
std::ptrdiff_t size = this->egptr() - this->eback();
std::ptrdiff_t pos = this->gptr() - this->eback();
charT* g = this->eback();
switch(static_cast<cast_type>(way))
{
case ::std::ios_base::beg:
if((off < 0) || (off > size))
return pos_type(off_type(-1));
else
this->setg(g, g + off, g + size);
break;
case ::std::ios_base::end:
if((off < 0) || (off > size))
return pos_type(off_type(-1));
else
this->setg(g, g + size - off, g + size);
break;
case ::std::ios_base::cur:
{
std::ptrdiff_t newpos = static_cast<std::ptrdiff_t>(pos + off);
if((newpos < 0) || (newpos > size))
return pos_type(off_type(-1));
else
this->setg(g, g + newpos, g + size);
break;
}
default: ;
}
#ifdef BOOST_MSVC
#pragma warning(push)
#pragma warning(disable:4244)
#endif
return static_cast<pos_type>(this->gptr() - this->eback());
#ifdef BOOST_MSVC
#pragma warning(pop)
#endif
}
template<class charT, class BufferT>
typename basic_pointerbuf<charT, BufferT>::pos_type
basic_pointerbuf<charT, BufferT>::seekpos(pos_type sp, ::std::ios_base::openmode which)
{
if(which & ::std::ios_base::out)
return pos_type(off_type(-1));
off_type size = static_cast<off_type>(this->egptr() - this->eback());
charT* g = this->eback();
if(off_type(sp) <= size)
{
this->setg(g, g + off_type(sp), g + size);
}
return pos_type(off_type(-1));
}
}} // namespace boost::detail
#endif // BOOST_DETAIL_BASIC_POINTERBUF_HPP
+35
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@@ -0,0 +1,35 @@
// Copyright David Abrahams 2003.
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef IMPLICIT_CAST_DWA200356_HPP
# define IMPLICIT_CAST_DWA200356_HPP
# include <boost/mpl/identity.hpp>
namespace boost {
// implementation originally suggested by C. Green in
// http://lists.boost.org/MailArchives/boost/msg00886.php
// The use of identity creates a non-deduced form, so that the
// explicit template argument must be supplied
template <typename T>
inline T implicit_cast (typename mpl::identity<T>::type x) {
return x;
}
// incomplete return type now is here
//template <typename T>
//void implicit_cast (...);
// Macro for when you need a constant expression (Gennaro Prota)
#define BOOST_IMPLICIT_CAST(dst_type, expr) \
( sizeof( implicit_cast<dst_type>(expr) ) \
, \
static_cast<dst_type>(expr) \
)
} // namespace boost
#endif // IMPLICIT_CAST_DWA200356_HPP
+196 -105
View File
@@ -1,112 +1,203 @@
// Copyright Kevlin Henney, 2000-2005.
// Copyright Alexander Nasonov, 2006-2010.
// Copyright Antony Polukhin, 2011-2026.
#ifndef BOOST_LEXICAL_CAST_INCLUDED
#define BOOST_LEXICAL_CAST_INCLUDED
// Boost lexical_cast.hpp header -------------------------------------------//
//
// See http://www.boost.org for most recent version including documentation.
// See end of this header for rights and permissions.
//
// what: lexical_cast custom keyword cast
// who: contributed by Kevlin Henney,
// enhanced with contributions from Terje Slettebø,
// with additional fixes and suggestions from Gennaro Prota,
// Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
// and other Boosters
// when: November 2000, March 2003
#include <string>
#include <typeinfo>
#include <boost/config.hpp>
#include <boost/limits.hpp>
#include <boost/throw_exception.hpp>
#include <boost/type_traits/is_pointer.hpp>
#ifdef BOOST_NO_STRINGSTREAM
#include <strstream>
#else
#include <sstream>
#endif
#if defined(BOOST_NO_STRINGSTREAM) || \
defined(BOOST_NO_STD_WSTRING) || \
defined(BOOST_NO_STD_LOCALE) || \
defined(BOOST_NO_INTRINSIC_WCHAR_T)
#define DISABLE_WIDE_CHAR_SUPPORT
#endif
namespace boost
{
// exception used to indicate runtime lexical_cast failure
class bad_lexical_cast : public std::bad_cast
{
public:
bad_lexical_cast() :
source(&typeid(void)), target(&typeid(void))
{
}
bad_lexical_cast(
const std::type_info &s,
const std::type_info &t) :
source(&s), target(&t)
{
}
const std::type_info &source_type() const
{
return *source;
}
const std::type_info &target_type() const
{
return *target;
}
virtual const char *what() const throw()
{
return "bad lexical cast: "
"source type value could not be interpreted as target";
}
virtual ~bad_lexical_cast() throw()
{
}
private:
const std::type_info *source;
const std::type_info *target;
};
namespace detail // selectors for choosing stream character type
{
template<typename Type>
struct stream_char
{
typedef char type;
};
#ifndef DISABLE_WIDE_CHAR_SUPPORT
template<>
struct stream_char<wchar_t>
{
typedef wchar_t type;
};
template<>
struct stream_char<wchar_t *>
{
typedef wchar_t type;
};
template<>
struct stream_char<const wchar_t *>
{
typedef wchar_t type;
};
template<>
struct stream_char<std::wstring>
{
typedef wchar_t type;
};
#endif
template<typename TargetChar, typename SourceChar>
struct widest_char
{
typedef TargetChar type;
};
template<>
struct widest_char<char, wchar_t>
{
typedef wchar_t type;
};
}
namespace detail // stream wrapper for handling lexical conversions
{
template<typename Target, typename Source>
class lexical_stream
{
public:
lexical_stream()
{
stream.unsetf(std::ios::skipws);
if(std::numeric_limits<Target>::is_specialized)
stream.precision(std::numeric_limits<Target>::digits10 + 1);
else if(std::numeric_limits<Source>::is_specialized)
stream.precision(std::numeric_limits<Source>::digits10 + 1);
}
~lexical_stream()
{
#if defined(BOOST_NO_STRINGSTREAM)
stream.freeze(false);
#endif
}
bool operator<<(const Source &input)
{
return !(stream << input).fail();
}
template<typename InputStreamable>
bool operator>>(InputStreamable &output)
{
return !is_pointer<InputStreamable>::value &&
stream >> output &&
(stream >> std::ws).eof();
}
bool operator>>(std::string &output)
{
#if defined(BOOST_NO_STRINGSTREAM)
stream << '\0';
#endif
output = stream.str();
return true;
}
#ifndef DISABLE_WIDE_CHAR_SUPPORT
bool operator>>(std::wstring &output)
{
output = stream.str();
return true;
}
#endif
private:
typedef typename widest_char<
typename stream_char<Target>::type,
typename stream_char<Source>::type>::type char_type;
#if defined(BOOST_NO_STRINGSTREAM)
std::strstream stream;
#elif defined(BOOST_NO_STD_LOCALE)
std::stringstream stream;
#else
std::basic_stringstream<char_type> stream;
#endif
};
}
template<typename Target, typename Source>
Target lexical_cast(Source arg)
{
detail::lexical_stream<Target, Source> interpreter;
Target result;
if(!(interpreter << arg && interpreter >> result))
throw_exception(bad_lexical_cast(typeid(Target), typeid(Source)));
return result;
}
}
// Copyright Kevlin Henney, 2000-2003. All rights reserved.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// what: lexical_cast custom keyword cast
// who: contributed by Kevlin Henney,
// enhanced with contributions from Terje Slettebo,
// with additional fixes and suggestions from Gennaro Prota,
// Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
// Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
// Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
// when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2014
#ifndef BOOST_LEXICAL_CAST_INCLUDED
#define BOOST_LEXICAL_CAST_INCLUDED
#include <boost/lexical_cast/detail/config.hpp>
#if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#undef DISABLE_WIDE_CHAR_SUPPORT
#endif
#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
#define BOOST_LCAST_NO_WCHAR_T
#endif
#include <boost/lexical_cast/detail/buffer_view.hpp>
#include <boost/lexical_cast/bad_lexical_cast.hpp>
#include <boost/lexical_cast/try_lexical_convert.hpp>
namespace boost
{
BOOST_LEXICAL_CAST_BEGIN_MODULE_EXPORT
template <typename Target, typename Source>
inline Target lexical_cast(const Source &arg)
{
Target result = Target();
if (!boost::conversion::detail::try_lexical_convert(arg, result)) {
boost::conversion::detail::throw_bad_cast<Source, Target>();
}
return result;
}
template <typename Target>
inline Target lexical_cast(const char* chars, std::size_t count)
{
return ::boost::lexical_cast<Target>(
::boost::conversion::detail::make_buffer_view(chars, chars + count)
);
}
template <typename Target>
inline Target lexical_cast(const unsigned char* chars, std::size_t count)
{
return ::boost::lexical_cast<Target>(
::boost::conversion::detail::make_buffer_view(chars, chars + count)
);
}
template <typename Target>
inline Target lexical_cast(const signed char* chars, std::size_t count)
{
return ::boost::lexical_cast<Target>(
::boost::conversion::detail::make_buffer_view(chars, chars + count)
);
}
#ifndef BOOST_LCAST_NO_WCHAR_T
template <typename Target>
inline Target lexical_cast(const wchar_t* chars, std::size_t count)
{
return ::boost::lexical_cast<Target>(
::boost::conversion::detail::make_buffer_view(chars, chars + count)
);
}
#endif
template <typename Target>
inline Target lexical_cast(const char16_t* chars, std::size_t count)
{
return ::boost::lexical_cast<Target>(
::boost::conversion::detail::make_buffer_view(chars, chars + count)
);
}
template <typename Target>
inline Target lexical_cast(const char32_t* chars, std::size_t count)
{
return ::boost::lexical_cast<Target>(
::boost::conversion::detail::make_buffer_view(chars, chars + count)
);
}
BOOST_LEXICAL_CAST_END_MODULE_EXPORT
} // namespace boost
#undef BOOST_LCAST_NO_WCHAR_T
#endif // #if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#endif // BOOST_LEXICAL_CAST_INCLUDED
@@ -1,110 +0,0 @@
// Copyright Kevlin Henney, 2000-2005.
// Copyright Alexander Nasonov, 2006-2010.
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// what: lexical_cast custom keyword cast
// who: contributed by Kevlin Henney,
// enhanced with contributions from Terje Slettebo,
// with additional fixes and suggestions from Gennaro Prota,
// Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
// Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
// Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
// when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2014
#ifndef BOOST_LEXICAL_CAST_BAD_LEXICAL_CAST_HPP
#define BOOST_LEXICAL_CAST_BAD_LEXICAL_CAST_HPP
#include <boost/lexical_cast/detail/config.hpp>
#if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#include <exception>
#include <typeinfo>
#include <boost/throw_exception.hpp>
#endif
namespace boost
{
BOOST_LEXICAL_CAST_BEGIN_MODULE_EXPORT
// exception used to indicate runtime lexical_cast failure
class BOOST_SYMBOL_VISIBLE bad_lexical_cast :
// workaround MSVC bug with std::bad_cast when _HAS_EXCEPTIONS == 0
#if defined(BOOST_MSVC) && defined(_HAS_EXCEPTIONS) && !_HAS_EXCEPTIONS
public std::exception
#else
public std::bad_cast
#endif
{
public:
bad_lexical_cast() noexcept
#ifndef BOOST_NO_TYPEID
: source(&typeid(void)), target(&typeid(void))
#endif
{}
const char *what() const BOOST_NOEXCEPT_OR_NOTHROW BOOST_OVERRIDE {
return "bad lexical cast: "
"source type value could not be interpreted as target";
}
bad_lexical_cast(const bad_lexical_cast&) = default;
bad_lexical_cast& operator=(const bad_lexical_cast&) = default;
#ifndef BOOST_NO_TYPEID
private:
#ifdef BOOST_NO_STD_TYPEINFO
typedef ::type_info type_info_t;
#else
typedef ::std::type_info type_info_t;
#endif
public:
bad_lexical_cast(
const type_info_t &source_type_arg,
const type_info_t &target_type_arg) noexcept
: source(&source_type_arg), target(&target_type_arg)
{}
const type_info_t &source_type() const noexcept {
return *source;
}
const type_info_t &target_type() const noexcept {
return *target;
}
private:
const type_info_t *source;
const type_info_t *target;
#endif
};
BOOST_LEXICAL_CAST_END_MODULE_EXPORT
namespace conversion { namespace detail {
#ifdef BOOST_NO_TYPEID
template <class S, class T>
inline void throw_bad_cast() {
boost::throw_exception(bad_lexical_cast());
}
#else
template <class S, class T>
inline void throw_bad_cast() {
boost::throw_exception(bad_lexical_cast(typeid(S), typeid(T)));
}
#endif
}} // namespace conversion::detail
} // namespace boost
#endif // #if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#endif // BOOST_LEXICAL_CAST_BAD_LEXICAL_CAST_HPP
@@ -1,67 +0,0 @@
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_LEXICAL_CAST_DETAIL_BUFFER_VIEW_HPP
#define BOOST_LEXICAL_CAST_DETAIL_BUFFER_VIEW_HPP
#include <boost/lexical_cast/detail/config.hpp>
#if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#include <iosfwd>
#endif
namespace boost { namespace conversion { namespace detail {
template < typename CharT >
struct buffer_view {
const CharT* begin;
const CharT* end;
};
template < typename CharT >
buffer_view<CharT> make_buffer_view(const CharT* begin, const CharT* end) {
return buffer_view<CharT>{begin, end};
}
inline buffer_view<char> make_buffer_view(const signed char* begin, const signed char* end) {
return buffer_view<char>{
reinterpret_cast<const char*>(begin),
reinterpret_cast<const char*>(end)
};
}
inline buffer_view<char> make_buffer_view(const unsigned char* begin, const unsigned char* end) {
return buffer_view<char>{
reinterpret_cast<const char*>(begin),
reinterpret_cast<const char*>(end)
};
}
template< typename CharT, typename Elem, typename Traits >
std::basic_ostream<Elem,Traits>& operator<<(
std::basic_ostream<Elem, Traits>& os,
buffer_view<CharT> r)
{
while (r.begin != r.end) {
os << r.begin[0];
++r.begin;
}
return os;
}
}}} // namespace boost::conversion::detail
#endif // #if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#endif // BOOST_LEXICAL_CAST_DETAIL_BUFFER_VIEW_HPP
@@ -1,22 +0,0 @@
// Copyright Antony Polukhin, 2021-2026.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_LEXICAL_CAST_DETAIL_CONFIG_HPP
#define BOOST_LEXICAL_CAST_DETAIL_CONFIG_HPP
#ifdef BOOST_LEXICAL_CAST_INTERFACE_UNIT
# define BOOST_LEXICAL_CAST_BEGIN_MODULE_EXPORT export {
# define BOOST_LEXICAL_CAST_END_MODULE_EXPORT }
#else
# define BOOST_LEXICAL_CAST_BEGIN_MODULE_EXPORT
# define BOOST_LEXICAL_CAST_END_MODULE_EXPORT
#endif
#if defined(BOOST_USE_MODULES) && !defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
import boost.lexical_cast;
#endif
#endif // #ifndef BOOST_LEXICAL_CAST_DETAIL_CONFIG_HPP
@@ -1,491 +0,0 @@
// Copyright Kevlin Henney, 2000-2005.
// Copyright Alexander Nasonov, 2006-2010.
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// what: lexical_cast custom keyword cast
// who: contributed by Kevlin Henney,
// enhanced with contributions from Terje Slettebo,
// with additional fixes and suggestions from Gennaro Prota,
// Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
// Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
// Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
// when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2014
#ifndef BOOST_LEXICAL_CAST_DETAIL_CONVERTER_LEXICAL_HPP
#define BOOST_LEXICAL_CAST_DETAIL_CONVERTER_LEXICAL_HPP
#include <boost/lexical_cast/detail/config.hpp>
#if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
#define BOOST_LCAST_NO_WCHAR_T
#endif
#include <array>
#include <cstddef>
#include <string>
#include <type_traits>
#include <boost/limits.hpp>
#include <array>
#ifndef BOOST_NO_CXX17_HDR_STRING_VIEW
#include <string_view>
#endif
#include <boost/container/container_fwd.hpp>
#endif // #ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/lexical_cast/detail/lcast_precision.hpp>
#include <boost/lexical_cast/detail/widest_char.hpp>
#include <boost/lexical_cast/detail/is_character.hpp>
#include <boost/lexical_cast/detail/buffer_view.hpp>
#include <boost/lexical_cast/detail/converter_lexical_streams.hpp>
namespace boost {
// Forward declaration
template<class T, std::size_t N>
class array;
template<class IteratorT>
class iterator_range;
// Forward declaration of boost::basic_string_view from Utility
template<class Ch, class Tr> class basic_string_view;
namespace detail // normalize_single_byte_char<Char>
{
// Converts signed/unsigned char to char
template < class Char >
struct normalize_single_byte_char
{
using type = Char;
};
template <>
struct normalize_single_byte_char< signed char >
{
using type = char;
};
template <>
struct normalize_single_byte_char< unsigned char >
{
using type = char;
};
}
namespace detail // deduce_character_type_later<T>
{
// Helper type, meaning that stram character for T must be deduced
// at Stage 2 (See deduce_source_char<T> and deduce_target_char<T>)
template < class T > struct deduce_character_type_later {};
}
namespace detail // stream_char_common<T>
{
// Selectors to choose stream character type (common for Source and Target)
// Returns one of char, wchar_t, char16_t, char32_t or deduce_character_type_later<T> types
// Executed on Stage 1 (See deduce_source_char<T> and deduce_target_char<T>)
template < typename Type >
struct stream_char_common: public std::conditional<
boost::detail::is_character< Type >::value,
Type,
boost::detail::deduce_character_type_later< Type >
> {};
template < typename Char >
struct stream_char_common< Char* >: public std::conditional<
boost::detail::is_character< Char >::value,
Char,
boost::detail::deduce_character_type_later< Char* >
> {};
template < typename Char >
struct stream_char_common< const Char* >: public std::conditional<
boost::detail::is_character< Char >::value,
Char,
boost::detail::deduce_character_type_later< const Char* >
> {};
template < typename Char >
struct stream_char_common< boost::conversion::detail::buffer_view< Char > >
{
using type = Char;
};
template < typename Char >
struct stream_char_common< boost::iterator_range< Char* > >: public std::conditional<
boost::detail::is_character< Char >::value,
Char,
boost::detail::deduce_character_type_later< boost::iterator_range< Char* > >
> {};
template < typename Char >
struct stream_char_common< boost::iterator_range< const Char* > >: public std::conditional<
boost::detail::is_character< Char >::value,
Char,
boost::detail::deduce_character_type_later< boost::iterator_range< const Char* > >
> {};
template < class Char, class Traits, class Alloc >
struct stream_char_common< std::basic_string< Char, Traits, Alloc > >
{
using type = Char;
};
template < class Char, class Traits, class Alloc >
struct stream_char_common< boost::container::basic_string< Char, Traits, Alloc > >
{
using type = Char;
};
template < typename Char, std::size_t N >
struct stream_char_common< boost::array< Char, N > >: public std::conditional<
boost::detail::is_character< Char >::value,
Char,
boost::detail::deduce_character_type_later< boost::array< Char, N > >
> {};
template < typename Char, std::size_t N >
struct stream_char_common< boost::array< const Char, N > >: public std::conditional<
boost::detail::is_character< Char >::value,
Char,
boost::detail::deduce_character_type_later< boost::array< const Char, N > >
> {};
#ifndef BOOST_NO_CXX11_HDR_ARRAY
template < typename Char, std::size_t N >
struct stream_char_common< std::array<Char, N > >: public std::conditional<
boost::detail::is_character< Char >::value,
Char,
boost::detail::deduce_character_type_later< std::array< Char, N > >
> {};
template < typename Char, std::size_t N >
struct stream_char_common< std::array< const Char, N > >: public std::conditional<
boost::detail::is_character< Char >::value,
Char,
boost::detail::deduce_character_type_later< std::array< const Char, N > >
> {};
#endif
#ifndef BOOST_NO_CXX17_HDR_STRING_VIEW
template < class Char, class Traits >
struct stream_char_common< std::basic_string_view< Char, Traits > >
{
using type = Char;
};
#endif
template < class Char, class Traits >
struct stream_char_common< boost::basic_string_view< Char, Traits > >
{
using type = Char;
};
#ifdef BOOST_HAS_INT128
template <> struct stream_char_common< boost::int128_type >
{
using type = char;
};
template <> struct stream_char_common< boost::uint128_type >
{
using type = char;
};
#endif
#if !defined(BOOST_LCAST_NO_WCHAR_T) && defined(BOOST_NO_INTRINSIC_WCHAR_T)
template <>
struct stream_char_common< wchar_t >
{
using type = char;
};
#endif
}
namespace detail // deduce_source_char_impl<T>
{
// If type T is `deduce_character_type_later` type, then tries to deduce
// character type using streaming metafunctions.
// Otherwise supplied type T is a character type, that must be normalized
// using normalize_single_byte_char<Char>.
// Executed at Stage 2 (See deduce_source_char<T> and deduce_target_char<T>)
template < class Char >
struct deduce_source_char_impl
{
typedef typename boost::detail::normalize_single_byte_char< Char >::type type;
};
template < class T >
struct deduce_source_char_impl< deduce_character_type_later< T > >
{
template <class U>
static auto left_shift_type(long)
-> decltype( std::declval<std::basic_ostream< char >&>() << std::declval<const U&>(), char{});
#if !defined(BOOST_LCAST_NO_WCHAR_T)
template <class U>
static auto left_shift_type(int)
-> decltype( std::declval<std::basic_ostream< wchar_t >&>() << std::declval<const U&>(), wchar_t{});
#endif
template <class U>
static void left_shift_type(...);
using type = decltype(left_shift_type<T>(1L));
static_assert(!std::is_same<type, void>::value,
#if defined(BOOST_LCAST_NO_WCHAR_T)
"Source type is not std::ostream`able and std::wostream`s are "
"not supported by your STL implementation"
#else
"Source type is neither std::ostream`able nor std::wostream`able"
#endif
);
};
}
namespace detail // deduce_target_char_impl<T>
{
// If type T is `deduce_character_type_later` type, then tries to deduce
// character type using boost::has_right_shift<T> metafunction.
// Otherwise supplied type T is a character type, that must be normalized
// using normalize_single_byte_char<Char>.
// Executed at Stage 2 (See deduce_source_char<T> and deduce_target_char<T>)
template < class Char >
struct deduce_target_char_impl
{
typedef typename normalize_single_byte_char< Char >::type type;
};
template < class T >
struct deduce_target_char_impl< deduce_character_type_later<T> >
{
template <class U>
static auto right_shift_type(long)
-> decltype( std::declval<std::basic_istream< char >&>() >> std::declval<U&>(), char{});
#if !defined(BOOST_LCAST_NO_WCHAR_T)
template <class U>
static auto right_shift_type(int)
-> decltype( std::declval<std::basic_istream< wchar_t >&>() >> std::declval<U&>(), wchar_t{});
#endif
template <class U>
static void right_shift_type(...);
using type = decltype(right_shift_type<T>(1L));
static_assert(!std::is_same<type, void>::value,
#if defined(BOOST_LCAST_NO_WCHAR_T)
"Target type is not std::istream`able and std::wistream`s are "
"not supported by your STL implementation"
#else
"Target type is neither std::istream`able nor std::wistream`able"
#endif
);
};
}
namespace detail // deduce_target_char<T> and deduce_source_char<T>
{
// We deduce stream character types in two stages.
//
// Stage 1 is common for Target and Source. At Stage 1 we get
// non normalized character type (may contain unsigned/signed char)
// or deduce_character_type_later<T> where T is the original type.
// Stage 1 is executed by stream_char_common<T>
//
// At Stage 2 we normalize character types or try to deduce character
// type using metafunctions.
// Stage 2 is executed by deduce_target_char_impl<T> and
// deduce_source_char_impl<T>
//
// deduce_target_char<T> and deduce_source_char<T> functions combine
// both stages
template < class T >
struct deduce_target_char
{
typedef typename stream_char_common< T >::type stage1_type;
typedef typename deduce_target_char_impl< stage1_type >::type type;
};
template < class T >
struct deduce_source_char
{
typedef typename stream_char_common< T >::type stage1_type;
typedef typename deduce_source_char_impl< stage1_type >::type type;
};
}
namespace detail // array_to_pointer_decay<T>
{
template<class T>
struct array_to_pointer_decay
{
typedef T type;
};
template<class T, std::size_t N>
struct array_to_pointer_decay<T[N]>
{
typedef const T * type;
};
}
namespace detail // lcast_src_length
{
// Return max. length of string representation of Source;
template< class Source, // Source type of lexical_cast.
class Enable = void // helper type
>
struct lcast_src_length
{
BOOST_STATIC_CONSTANT(std::size_t, value = 1);
};
// Helper for integral types.
// Notes on length calculation:
// Max length for 32bit int with grouping "\1" and thousands_sep ',':
// "-2,1,4,7,4,8,3,6,4,7"
// ^ - is_signed
// ^ - 1 digit not counted by digits10
// ^^^^^^^^^^^^^^^^^^ - digits10 * 2
//
// Constant is_specialized is used instead of constant 1
// to prevent buffer overflow in a rare case when
// <boost/limits.hpp> doesn't add missing specialization for
// numeric_limits<T> for some integral type T.
// When is_specialized is false, the whole expression is 0.
template <class Source>
struct lcast_src_length<
Source, typename std::enable_if<boost::detail::lcast::is_integral<Source>::value >::type
>
{
BOOST_STATIC_CONSTANT(std::size_t, value =
std::numeric_limits<Source>::is_signed +
std::numeric_limits<Source>::is_specialized + /* == 1 */
std::numeric_limits<Source>::digits10 * 2
);
};
// Helper for floating point types.
// -1.23456789e-123456
// ^ sign
// ^ leading digit
// ^ decimal point
// ^^^^^^^^ lcast_precision<Source>::value
// ^ "e"
// ^ exponent sign
// ^^^^^^ exponent (assumed 6 or less digits)
// sign + leading digit + decimal point + "e" + exponent sign == 5
template<class Source>
struct lcast_src_length<
Source, typename std::enable_if<std::is_floating_point<Source>::value >::type
>
{
static_assert(
std::numeric_limits<Source>::max_exponent10 <= 999999L &&
std::numeric_limits<Source>::min_exponent10 >= -999999L
, "");
BOOST_STATIC_CONSTANT(std::size_t, value =
5 + lcast_precision<Source>::value + 6
);
};
}
namespace detail // lexical_cast_stream_traits<Source, Target>
{
template <class Source, class Target>
struct lexical_cast_stream_traits {
typedef typename boost::detail::array_to_pointer_decay<Source>::type src;
typedef typename std::remove_cv<src>::type no_cv_src;
typedef boost::detail::deduce_source_char<no_cv_src> deduce_src_char_metafunc;
typedef typename deduce_src_char_metafunc::type src_char_t;
typedef typename boost::detail::deduce_target_char<Target>::type target_char_t;
typedef typename boost::detail::widest_char<
target_char_t, src_char_t
>::type char_type;
#if !defined(BOOST_NO_CXX11_CHAR16_T) && defined(BOOST_NO_CXX11_UNICODE_LITERALS)
static_assert(!std::is_same<char16_t, src_char_t>::value
&& !std::is_same<char16_t, target_char_t>::value,
"Your compiler does not have full support for char16_t" );
#endif
#if !defined(BOOST_NO_CXX11_CHAR32_T) && defined(BOOST_NO_CXX11_UNICODE_LITERALS)
static_assert(!std::is_same<char32_t, src_char_t>::value
&& !std::is_same<char32_t, target_char_t>::value,
"Your compiler does not have full support for char32_t" );
#endif
typedef std::char_traits<char_type> traits;
typedef boost::detail::lcast_src_length<no_cv_src> len_t;
};
}
namespace detail
{
template<typename Target, typename Source>
struct lexical_converter_impl
{
typedef lexical_cast_stream_traits<Source, Target> stream_trait;
typedef detail::lcast::optimized_src_stream<
typename stream_trait::char_type,
typename stream_trait::traits,
stream_trait::len_t::value + 1
> optimized_src_stream;
template <class T>
static auto detect_type(int)
-> decltype(std::declval<optimized_src_stream&>().stream_in(std::declval<lcast::exact<T>>()), optimized_src_stream{});
template <class T>
static lcast::ios_src_stream<typename stream_trait::char_type, typename stream_trait::traits> detect_type(...);
using from_src_stream = decltype(detect_type<Source>(1));
typedef detail::lcast::to_target_stream<
typename stream_trait::char_type,
typename stream_trait::traits
> to_target_stream;
static inline bool try_convert(const Source& arg, Target& result) {
from_src_stream src_stream;
if (!src_stream.stream_in(lcast::exact<Source>{arg}))
return false;
to_target_stream out(src_stream.cbegin(), src_stream.cend());
if (!out.stream_out(result))
return false;
return true;
}
};
}
} // namespace boost
#undef BOOST_LCAST_NO_WCHAR_T
#endif // #if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#endif // BOOST_LEXICAL_CAST_DETAIL_CONVERTER_LEXICAL_HPP
@@ -1,763 +0,0 @@
// Copyright Kevlin Henney, 2000-2005.
// Copyright Alexander Nasonov, 2006-2010.
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// what: lexical_cast custom keyword cast
// who: contributed by Kevlin Henney,
// enhanced with contributions from Terje Slettebo,
// with additional fixes and suggestions from Gennaro Prota,
// Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
// Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
// Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
// when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2014, Nowember 2016
#ifndef BOOST_LEXICAL_CAST_DETAIL_CONVERTER_LEXICAL_STREAMS_HPP
#define BOOST_LEXICAL_CAST_DETAIL_CONVERTER_LEXICAL_STREAMS_HPP
#include <boost/lexical_cast/detail/config.hpp>
#if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
#define BOOST_LCAST_NO_WCHAR_T
#endif
#include <cstddef>
#include <string>
#include <cstring>
#include <cstdio>
#include <type_traits>
#include <boost/limits.hpp>
#include <boost/config/workaround.hpp>
#include <boost/core/snprintf.hpp>
#ifndef BOOST_NO_STD_LOCALE
# include <locale>
#else
# ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
// Getting error at this point means, that your STL library is old/lame/misconfigured.
// If nothing can be done with STL library, define BOOST_LEXICAL_CAST_ASSUME_C_LOCALE,
// but beware: lexical_cast will understand only 'C' locale delimeters and thousands
// separators.
# error "Unable to use <locale> header. Define BOOST_LEXICAL_CAST_ASSUME_C_LOCALE to force "
# error "boost::lexical_cast to use only 'C' locale during conversions."
# endif
#endif
#ifdef BOOST_NO_STRINGSTREAM
#include <strstream>
#else
#include <sstream>
#endif
#include <array>
#ifndef BOOST_NO_CWCHAR
# include <cwchar>
#endif
#include <istream>
#include <boost/container/container_fwd.hpp>
#ifndef BOOST_NO_CWCHAR
# include <cwchar>
#endif
#endif // #ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/lexical_cast/detail/buffer_view.hpp>
#include <boost/lexical_cast/detail/lcast_char_constants.hpp>
#include <boost/lexical_cast/detail/lcast_unsigned_converters.hpp>
#include <boost/lexical_cast/detail/lcast_basic_unlockedbuf.hpp>
#include <boost/lexical_cast/detail/inf_nan.hpp>
#include <boost/lexical_cast/detail/lcast_precision.hpp>
#include <boost/lexical_cast/detail/type_traits.hpp>
// Forward declarations
namespace boost {
template<class T, std::size_t N>
class array;
template<class IteratorT>
class iterator_range;
// forward declaration of boost::basic_string_view from Utility
template<class Ch, class Tr> class basic_string_view;
}
namespace boost { namespace detail { namespace lcast {
template <typename T>
struct exact {
static_assert(!std::is_const<T>::value, "");
static_assert(!std::is_reference<T>::value, "");
const T& payload;
};
template< class CharT // a result of widest_char transformation
, class Traits
, std::size_t CharacterBufferSize
>
class optimized_src_stream {
CharT buffer[CharacterBufferSize];
// After the `stream_in(` finishes, `[start, finish)` is
// the range to output by `operator >>`
const CharT* start;
const CharT* finish;
public:
optimized_src_stream(optimized_src_stream&&) = delete;
optimized_src_stream(const optimized_src_stream&) = delete;
optimized_src_stream& operator=(optimized_src_stream&&) = delete;
optimized_src_stream& operator=(const optimized_src_stream&) = delete;
optimized_src_stream() noexcept
: start(buffer)
, finish(buffer + CharacterBufferSize)
{}
const CharT* cbegin() const noexcept {
return start;
}
const CharT* cend() const noexcept {
return finish;
}
private:
bool shl_char(CharT ch) noexcept {
Traits::assign(buffer[0], ch);
finish = start + 1;
return true;
}
#ifndef BOOST_LCAST_NO_WCHAR_T
template <class T>
bool shl_char(T ch) {
static_assert(sizeof(T) <= sizeof(CharT),
"boost::lexical_cast does not support narrowing of char types."
"Use boost::locale instead" );
#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
std::locale loc;
CharT const w = BOOST_USE_FACET(std::ctype<CharT>, loc).widen(ch);
#else
CharT const w = static_cast<CharT>(ch);
#endif
Traits::assign(buffer[0], w);
finish = start + 1;
return true;
}
#endif
bool shl_char_array(CharT const* str_value) noexcept {
start = str_value;
finish = start + Traits::length(str_value);
return true;
}
bool shl_char_array_limited(CharT const* str, std::size_t max_size) noexcept {
start = str;
finish = start;
const auto zero = Traits::to_char_type(0);
while (finish < start + max_size && zero != *finish) {
++ finish;
}
return true;
}
template <class T>
inline bool shl_unsigned(const T n) {
CharT* tmp_finish = buffer + CharacterBufferSize;
start = lcast_put_unsigned<Traits, T, CharT>(n, tmp_finish).convert();
finish = tmp_finish;
return true;
}
template <class T>
inline bool shl_signed(const T n) {
CharT* tmp_finish = buffer + CharacterBufferSize;
typedef typename boost::detail::lcast::make_unsigned<T>::type utype;
CharT* tmp_start = lcast_put_unsigned<Traits, utype, CharT>(lcast_to_unsigned(n), tmp_finish).convert();
if (n < 0) {
--tmp_start;
CharT const minus = lcast_char_constants<CharT>::minus;
Traits::assign(*tmp_start, minus);
}
start = tmp_start;
finish = tmp_finish;
return true;
}
bool shl_real_type(lcast::exact<float> val, char* begin) {
const double val_as_double = static_cast<double>(val.payload);
finish = start +
boost::core::snprintf(begin, CharacterBufferSize,
"%.*g", static_cast<int>(boost::detail::lcast_precision<float>::value), val_as_double);
return finish > start;
}
bool shl_real_type(lcast::exact<double> val, char* begin) {
finish = start +
boost::core::snprintf(begin, CharacterBufferSize,
"%.*g", static_cast<int>(boost::detail::lcast_precision<double>::value), val.payload);
return finish > start;
}
#ifndef __MINGW32__
bool shl_real_type(lcast::exact<long double> val, char* begin) {
finish = start +
boost::core::snprintf(begin, CharacterBufferSize,
"%.*Lg", static_cast<int>(boost::detail::lcast_precision<long double>::value), val.payload );
return finish > start;
}
#else
bool shl_real_type(lcast::exact<long double> val, char* begin) {
return shl_real_type(lcast::exact<double>{static_cast<double>(val.payload)}, begin);
}
#endif
#if !defined(BOOST_LCAST_NO_WCHAR_T)
bool shl_real_type(lcast::exact<float> val, wchar_t* begin) {
const double val_as_double = static_cast<double>(val.payload);
finish = start + boost::core::swprintf(
begin, CharacterBufferSize, L"%.*g",
static_cast<int>(boost::detail::lcast_precision<float>::value),
val_as_double
);
return finish > start;
}
bool shl_real_type(lcast::exact<double> val, wchar_t* begin) {
finish = start + boost::core::swprintf(
begin, CharacterBufferSize, L"%.*g",
static_cast<int>(boost::detail::lcast_precision<double>::value),
val.payload
);
return finish > start;
}
bool shl_real_type(lcast::exact<long double> val, wchar_t* begin) {
finish = start + boost::core::swprintf(
begin, CharacterBufferSize, L"%.*Lg",
static_cast<int>(boost::detail::lcast_precision<long double>::value),
val.payload
);
return finish > start;
}
#endif
public:
template <class C>
using enable_if_compatible_char_t = typename std::enable_if<
std::is_same<const C, const CharT>::value || (
std::is_same<const char, const CharT>::value && (
std::is_same<const C, const unsigned char>::value ||
std::is_same<const C, const signed char>::value
)
), bool
>::type;
template<class CharTraits, class Alloc>
bool stream_in(lcast::exact<std::basic_string<CharT,CharTraits,Alloc>> x) noexcept {
start = x.payload.data();
finish = start + x.payload.length();
return true;
}
template<class CharTraits, class Alloc>
bool stream_in(lcast::exact<boost::container::basic_string<CharT,CharTraits,Alloc>> x) noexcept {
start = x.payload.data();
finish = start + x.payload.length();
return true;
}
bool stream_in(lcast::exact<bool> x) noexcept {
CharT const czero = lcast_char_constants<CharT>::zero;
Traits::assign(buffer[0], Traits::to_char_type(czero + x.payload));
finish = start + 1;
return true;
}
bool stream_in(lcast::exact<boost::conversion::detail::buffer_view<CharT>> x) noexcept {
start = x.payload.begin;
finish = x.payload.end;
return true;
}
template <class C>
enable_if_compatible_char_t<C>
stream_in(lcast::exact<boost::iterator_range<C*>> x) noexcept {
auto buf = boost::conversion::detail::make_buffer_view(x.payload.begin(), x.payload.end());
return stream_in(lcast::exact<decltype(buf)>{buf});
}
bool stream_in(lcast::exact<char> x) { return shl_char(x.payload); }
bool stream_in(lcast::exact<unsigned char> x) { return shl_char(static_cast<char>(x.payload)); }
bool stream_in(lcast::exact<signed char> x) { return shl_char(static_cast<char>(x.payload)); }
#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
template <class C>
typename std::enable_if<boost::detail::is_character<C>::value, bool>::type
stream_in(lcast::exact<C> x) { return shl_char(x.payload); }
#endif
template <class Type>
enable_if_compatible_char_t<Type>
stream_in(lcast::exact<Type*> x) { return shl_char_array(reinterpret_cast<CharT const*>(x.payload)); }
template <class Type>
typename std::enable_if<!std::is_floating_point<Type>::value && boost::detail::lcast::is_signed<Type>::value && !std::is_enum<Type>::value, bool>::type
stream_in(lcast::exact<Type> x) { return shl_signed(x.payload); }
template <class Type>
typename std::enable_if<boost::detail::lcast::is_unsigned<Type>::value && !std::is_enum<Type>::value, bool>::type
stream_in(lcast::exact<Type> x) { return shl_unsigned(x.payload); }
template <class Type>
auto stream_in(lcast::exact<Type> x) -> decltype(shl_real_type(x, buffer)) {
const CharT* inf_nan = detail::get_inf_nan(x.payload, CharT());
if (inf_nan) {
start = inf_nan;
finish = start + Traits::length(inf_nan);
return true;
}
return shl_real_type(x, buffer);
}
template <class C, std::size_t N>
enable_if_compatible_char_t<C>
stream_in(lcast::exact<boost::array<C, N>> x) noexcept {
return shl_char_array_limited(reinterpret_cast<const CharT*>(x.payload.data()), N);
}
template <class C, std::size_t N>
enable_if_compatible_char_t<C>
stream_in(lcast::exact<std::array<C, N>> x) noexcept {
return shl_char_array_limited(reinterpret_cast<const CharT*>(x.payload.data()), N);
}
#ifndef BOOST_NO_CXX17_HDR_STRING_VIEW
template <class C, class CharTraits>
enable_if_compatible_char_t<C>
stream_in(lcast::exact<std::basic_string_view<C, CharTraits>> x) noexcept {
start = reinterpret_cast<const CharT*>(x.payload.data());
finish = start + x.payload.size();
return true;
}
#endif
template <class C, class CharTraits>
enable_if_compatible_char_t<C>
stream_in(lcast::exact<boost::basic_string_view<C, CharTraits>> x) noexcept {
start = reinterpret_cast<const CharT*>(x.payload.data());
finish = start + x.payload.size();
return true;
}
};
template <class CharT, class Traits>
class ios_src_stream {
typedef detail::lcast::out_stream_t<CharT, Traits> deduced_out_stream_t;
typedef detail::lcast::stringbuffer_t<CharT, Traits> deduced_out_buffer_t;
deduced_out_buffer_t out_buffer;
deduced_out_stream_t out_stream;
const CharT* start = nullptr;
const CharT* finish = nullptr;
public:
ios_src_stream(ios_src_stream&&) = delete;
ios_src_stream(const ios_src_stream&) = delete;
ios_src_stream& operator=(ios_src_stream&&) = delete;
ios_src_stream& operator=(const ios_src_stream&) = delete;
ios_src_stream(): out_buffer(), out_stream(&out_buffer) {}
const CharT* cbegin() const noexcept {
return start;
}
const CharT* cend() const noexcept {
return finish;
}
private:
const deduced_out_buffer_t* get_rdbuf() const {
return static_cast<deduced_out_buffer_t*>(
out_stream.rdbuf()
);
}
template<typename InputStreamable>
bool shl_input_streamable(InputStreamable& input) {
#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_LOCALE)
// If you have compilation error at this point, than your STL library
// does not support such conversions. Try updating it.
static_assert(std::is_same<char, CharT>::value, "");
#endif
#ifndef BOOST_NO_EXCEPTIONS
out_stream.exceptions(std::ios::badbit);
try {
#endif
bool const result = !(out_stream << input).fail();
const auto* const p = get_rdbuf();
start = p->pbase();
finish = p->pptr();
return result;
#ifndef BOOST_NO_EXCEPTIONS
} catch (const ::std::ios_base::failure& /*f*/) {
return false;
}
#endif
}
template <class T>
bool shl_char_array(T const* str_value) {
static_assert(sizeof(T) <= sizeof(CharT),
"boost::lexical_cast does not support narrowing of char types."
"Use boost::locale instead" );
return shl_input_streamable(str_value);
}
template <class T>
bool shl_real(T val) {
const CharT* inf_nan = detail::get_inf_nan(val, CharT());
if (inf_nan) {
start = inf_nan;
finish = start + Traits::length(inf_nan);
return true;
}
boost::detail::lcast_set_precision(out_stream, &val);
return shl_input_streamable(val);
}
public:
template <class Type>
typename std::enable_if<boost::detail::is_character<Type>::value && sizeof(char) == sizeof(Type), bool>::type
stream_in(lcast::exact<const Type*> x) { return shl_char_array(reinterpret_cast<char const*>(x.payload)); }
template <class Type>
typename std::enable_if<boost::detail::is_character<Type>::value && sizeof(char) != sizeof(Type), bool>::type
stream_in(lcast::exact<const Type*> x) { return shl_char_array(x.payload); }
bool stream_in(lcast::exact<float> x) { return shl_real(x.payload); }
bool stream_in(lcast::exact<double> x) { return shl_real(x.payload); }
bool stream_in(lcast::exact<long double> x) {
#ifndef __MINGW32__
return shl_real(x.payload);
#else
return shl_real(static_cast<double>(x.payload));
#endif
}
template <class C>
typename std::enable_if<boost::detail::is_character<C>::value, bool>::type
stream_in(lcast::exact<iterator_range<C*>> x) noexcept {
auto buf = boost::conversion::detail::make_buffer_view(x.payload.begin(), x.payload.end());
return stream_in(lcast::exact<decltype(buf)>{buf});
}
template <class C>
typename std::enable_if<boost::detail::is_character<C>::value, bool>::type
stream_in(lcast::exact<iterator_range<const C*>> x) noexcept {
auto buf = boost::conversion::detail::make_buffer_view(x.payload.begin(), x.payload.end());
return stream_in(lcast::exact<decltype(buf)>{buf});
}
template <class InStreamable>
bool stream_in(lcast::exact<InStreamable> x) { return shl_input_streamable(x.payload); }
};
template <class CharT, class Traits>
class to_target_stream {
//`[start, finish)` is the range to output by `operator >>`
const CharT* start;
const CharT* const finish;
public:
to_target_stream(to_target_stream&&) = delete;
to_target_stream(const to_target_stream&) = delete;
to_target_stream& operator=(to_target_stream&&) = delete;
to_target_stream& operator=(const to_target_stream&) = delete;
to_target_stream(const CharT* begin, const CharT* end) noexcept
: start(begin)
, finish(end)
{}
private:
template <typename Type>
#if defined(__clang__) && (__clang_major__ > 3 || __clang_minor__ > 6)
__attribute__((no_sanitize("unsigned-integer-overflow")))
#endif
bool shr_unsigned(Type& output) {
if (start == finish) return false;
CharT const minus = lcast_char_constants<CharT>::minus;
CharT const plus = lcast_char_constants<CharT>::plus;
bool const has_minus = Traits::eq(minus, *start);
/* We won`t use `start' any more, so no need in decrementing it after */
if (has_minus || Traits::eq(plus, *start)) {
++start;
}
bool const succeed = lcast_ret_unsigned<Traits, Type, CharT>(output, start, finish).convert();
if (has_minus) {
output = static_cast<Type>(0u - output);
}
return succeed;
}
template <typename Type>
#if defined(__clang__) && (__clang_major__ > 3 || __clang_minor__ > 6)
__attribute__((no_sanitize("unsigned-integer-overflow")))
#endif
bool shr_signed(Type& output) {
if (start == finish) return false;
CharT const minus = lcast_char_constants<CharT>::minus;
CharT const plus = lcast_char_constants<CharT>::plus;
typedef typename boost::detail::lcast::make_unsigned<Type>::type utype;
utype out_tmp = 0;
bool const has_minus = Traits::eq(minus, *start);
/* We won`t use `start' any more, so no need in decrementing it after */
if (has_minus || Traits::eq(plus, *start)) {
++start;
}
bool succeed = lcast_ret_unsigned<Traits, utype, CharT>(out_tmp, start, finish).convert();
if (has_minus) {
utype const comp_val = (static_cast<utype>(1) << std::numeric_limits<Type>::digits);
succeed = succeed && out_tmp<=comp_val;
output = static_cast<Type>(0u - out_tmp);
} else {
utype const comp_val = static_cast<utype>((std::numeric_limits<Type>::max)());
succeed = succeed && out_tmp<=comp_val;
output = static_cast<Type>(out_tmp);
}
return succeed;
}
template<typename InputStreamable>
bool shr_using_base_class(InputStreamable& output)
{
static_assert(
!std::is_pointer<InputStreamable>::value,
"boost::lexical_cast can not convert to pointers"
);
#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_LOCALE)
static_assert(std::is_same<char, CharT>::value,
"boost::lexical_cast can not convert, because your STL library does not "
"support such conversions. Try updating it."
);
#endif
#if defined(BOOST_NO_STRINGSTREAM)
std::istrstream stream(start, static_cast<std::istrstream::streamsize>(finish - start));
#else
typedef detail::lcast::buffer_t<CharT, Traits> buffer_t;
buffer_t buf;
// Usually `istream` and `basic_istream` do not modify
// content of buffer; `buffer_t` assures that this is true
buf.setbuf(const_cast<CharT*>(start), static_cast<typename buffer_t::streamsize>(finish - start));
#if defined(BOOST_NO_STD_LOCALE)
std::istream stream(&buf);
#else
std::basic_istream<CharT, Traits> stream(&buf);
#endif // BOOST_NO_STD_LOCALE
#endif // BOOST_NO_STRINGSTREAM
#ifndef BOOST_NO_EXCEPTIONS
stream.exceptions(std::ios::badbit);
try {
#endif
stream.unsetf(std::ios::skipws);
boost::detail::lcast_set_precision(stream, static_cast<InputStreamable*>(0));
return (stream >> output)
&& (stream.get() == Traits::eof());
#ifndef BOOST_NO_EXCEPTIONS
} catch (const ::std::ios_base::failure& /*f*/) {
return false;
}
#endif
}
template<class T>
inline bool shr_xchar(T& output) noexcept {
static_assert(sizeof(CharT) == sizeof(T),
"boost::lexical_cast does not support narrowing of character types."
"Use boost::locale instead" );
bool const ok = (finish - start == 1);
if (ok) {
CharT out;
Traits::assign(out, *start);
output = static_cast<T>(out);
}
return ok;
}
template <std::size_t N, class ArrayT>
bool shr_std_array(ArrayT& output) noexcept {
const std::size_t size = static_cast<std::size_t>(finish - start);
if (size > N - 1) { // `-1` because we need to store \0 at the end
return false;
}
std::memcpy(&output[0], start, size * sizeof(CharT));
output[size] = Traits::to_char_type(0);
return true;
}
public:
bool stream_out(unsigned short& output) { return shr_unsigned(output); }
bool stream_out(unsigned int& output) { return shr_unsigned(output); }
bool stream_out(unsigned long int& output) { return shr_unsigned(output); }
bool stream_out(short& output) { return shr_signed(output); }
bool stream_out(int& output) { return shr_signed(output); }
bool stream_out(long int& output) { return shr_signed(output); }
#if defined(BOOST_HAS_LONG_LONG)
bool stream_out(boost::ulong_long_type& output) { return shr_unsigned(output); }
bool stream_out(boost::long_long_type& output) { return shr_signed(output); }
#elif defined(BOOST_HAS_MS_INT64)
bool stream_out(unsigned __int64& output) { return shr_unsigned(output); }
bool stream_out(__int64& output) { return shr_signed(output); }
#endif
#ifdef BOOST_HAS_INT128
bool stream_out(boost::uint128_type& output) { return shr_unsigned(output); }
bool stream_out(boost::int128_type& output) { return shr_signed(output); }
#endif
bool stream_out(char& output) { return shr_xchar(output); }
bool stream_out(unsigned char& output) { return shr_xchar(output); }
bool stream_out(signed char& output) { return shr_xchar(output); }
#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
bool stream_out(wchar_t& output) { return shr_xchar(output); }
#endif
#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
bool stream_out(char16_t& output) { return shr_xchar(output); }
#endif
#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
bool stream_out(char32_t& output) { return shr_xchar(output); }
#endif
template<class CharTraits, class Alloc>
bool stream_out(std::basic_string<CharT,CharTraits,Alloc>& str) {
str.assign(start, finish); return true;
}
template<class CharTraits, class Alloc>
bool stream_out(boost::container::basic_string<CharT,CharTraits,Alloc>& str) {
str.assign(start, finish); return true;
}
template <class C, std::size_t N>
bool stream_out(std::array<C, N>& output) noexcept {
static_assert(sizeof(C) == sizeof(CharT), "");
return shr_std_array<N>(output);
}
template <class C, std::size_t N>
bool stream_out(boost::array<C, N>& output) noexcept {
static_assert(sizeof(C) == sizeof(CharT), "");
return shr_std_array<N>(output);
}
bool stream_out(bool& output) noexcept {
output = false; // Suppress warning about uninitalized variable
if (start == finish) return false;
CharT const zero = lcast_char_constants<CharT>::zero;
CharT const plus = lcast_char_constants<CharT>::plus;
CharT const minus = lcast_char_constants<CharT>::minus;
const CharT* const dec_finish = finish - 1;
output = Traits::eq(*dec_finish, zero + 1);
if (!output && !Traits::eq(*dec_finish, zero)) {
return false; // Does not ends on '0' or '1'
}
if (start == dec_finish) return true;
// We may have sign at the beginning
if (Traits::eq(plus, *start) || (Traits::eq(minus, *start) && !output)) {
++ start;
}
// Skipping zeros
while (start != dec_finish) {
if (!Traits::eq(zero, *start)) {
return false; // Not a zero => error
}
++ start;
}
return true;
}
private:
// Not optimised converter
template <class T>
bool float_types_converter_internal(T& output) {
if (parse_inf_nan(start, finish, output)) return true;
bool const return_value = shr_using_base_class(output);
/* Some compilers and libraries successfully
* parse 'inf', 'INFINITY', '1.0E', '1.0E-'...
* We are trying to provide a unified behaviour,
* so we just forbid such conversions (as some
* of the most popular compilers/libraries do)
* */
CharT const minus = lcast_char_constants<CharT>::minus;
CharT const plus = lcast_char_constants<CharT>::plus;
CharT const capital_e = lcast_char_constants<CharT>::capital_e;
CharT const lowercase_e = lcast_char_constants<CharT>::lowercase_e;
if ( return_value &&
(
Traits::eq(*(finish-1), lowercase_e) // 1.0e
|| Traits::eq(*(finish-1), capital_e) // 1.0E
|| Traits::eq(*(finish-1), minus) // 1.0e- or 1.0E-
|| Traits::eq(*(finish-1), plus) // 1.0e+ or 1.0E+
)
) return false;
return return_value;
}
public:
bool stream_out(float& output) { return float_types_converter_internal(output); }
bool stream_out(double& output) { return float_types_converter_internal(output); }
bool stream_out(long double& output) { return float_types_converter_internal(output); }
// Generic istream-based algorithm.
// lcast_streambuf_for_target<InputStreamable>::value is true.
template <typename InputStreamable>
bool stream_out(InputStreamable& output) {
return shr_using_base_class(output);
}
};
}}} // namespace boost::detail::lcast
#undef BOOST_LCAST_NO_WCHAR_T
#endif // #if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#endif // BOOST_LEXICAL_CAST_DETAIL_CONVERTER_LEXICAL_HPP
@@ -1,190 +0,0 @@
// Copyright Kevlin Henney, 2000-2005.
// Copyright Alexander Nasonov, 2006-2010.
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// what: lexical_cast custom keyword cast
// who: contributed by Kevlin Henney,
// enhanced with contributions from Terje Slettebo,
// with additional fixes and suggestions from Gennaro Prota,
// Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
// Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
// Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
// when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2016
#ifndef BOOST_LEXICAL_CAST_DETAIL_CONVERTER_NUMERIC_HPP
#define BOOST_LEXICAL_CAST_DETAIL_CONVERTER_NUMERIC_HPP
#include <boost/lexical_cast/detail/config.hpp>
#if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#include <type_traits>
#include <boost/core/cmath.hpp>
#include <boost/limits.hpp>
#endif // #ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/lexical_cast/detail/type_traits.hpp>
namespace boost { namespace detail {
template <class Source, class Target>
bool ios_numeric_comparer_float(Source x, Source y) noexcept {
return x == y
|| (boost::core::isnan(x) && boost::core::isnan(y))
|| (x < (std::numeric_limits<Target>::min)())
;
}
template <class RangeType, class T>
constexpr bool is_out_of_range_for(T value) noexcept {
return value > static_cast<T>((std::numeric_limits<RangeType>::max)())
|| value < static_cast<T>((std::numeric_limits<RangeType>::min)())
|| boost::core::isnan(value);
}
// integral -> integral
template <typename Target, typename Source>
typename std::enable_if<
!std::is_floating_point<Source>::value && !std::is_floating_point<Target>::value, bool
>::type noexcept_numeric_convert(Source arg, Target& result) noexcept {
const Target target_tmp = static_cast<Target>(arg);
const Source arg_restored = static_cast<Source>(target_tmp);
if (arg == arg_restored) {
result = target_tmp;
return true;
}
return false;
}
// integral -> floating point
template <typename Target, typename Source>
typename std::enable_if<
!std::is_floating_point<Source>::value && std::is_floating_point<Target>::value, bool
>::type noexcept_numeric_convert(Source arg, Target& result) noexcept {
const Target target_tmp = static_cast<Target>(arg);
result = target_tmp;
return true;
}
// floating point -> floating point
template <typename Target, typename Source>
typename std::enable_if<
std::is_floating_point<Source>::value && std::is_floating_point<Target>::value, bool
>::type noexcept_numeric_convert(Source arg, Target& result) noexcept {
const Target target_tmp = static_cast<Target>(arg);
const Source arg_restored = static_cast<Source>(target_tmp);
if (detail::ios_numeric_comparer_float<Source, Target>(arg, arg_restored)) {
result = target_tmp;
return true;
}
return false;
}
// floating point -> integral
template <typename Target, typename Source>
typename std::enable_if<
std::is_floating_point<Source>::value && !std::is_floating_point<Target>::value, bool
>::type noexcept_numeric_convert(Source arg, Target& result) noexcept {
if (detail::is_out_of_range_for<Target>(arg)) {
return false;
}
const Target target_tmp = static_cast<Target>(arg);
const Source arg_restored = static_cast<Source>(target_tmp);
if (arg == arg_restored /* special values are handled in detail::is_out_of_range_for */) {
result = target_tmp;
return true;
}
return false;
}
struct lexical_cast_dynamic_num_not_ignoring_minus
{
template <typename Target, typename Source>
static inline bool try_convert(Source arg, Target& result) noexcept {
return boost::detail::noexcept_numeric_convert<Target, Source >(arg, result);
}
};
struct lexical_cast_dynamic_num_ignoring_minus
{
template <typename Target, typename Source>
#if defined(__clang__) && (__clang_major__ > 3 || __clang_minor__ > 6)
__attribute__((no_sanitize("unsigned-integer-overflow")))
#endif
static inline bool try_convert(Source arg, Target& result) noexcept {
typedef typename std::conditional<
std::is_floating_point<Source>::value,
std::conditional<true, Source, Source>, // std::type_identity emulation
boost::detail::lcast::make_unsigned<Source>
>::type usource_lazy_t;
typedef typename usource_lazy_t::type usource_t;
if (arg < 0) {
const bool res = boost::detail::noexcept_numeric_convert<Target, usource_t>(
static_cast<usource_t>(0u - static_cast<usource_t>(arg)), result
);
result = static_cast<Target>(0u - result);
return res;
} else {
return boost::detail::noexcept_numeric_convert<Target, usource_t>(arg, result);
}
}
};
/*
* dynamic_num_converter_impl follows the rules:
* 1) If Source can be converted to Target without precision loss and
* without overflows, then assign Source to Target and return
*
* 2) If Source is less than 0 and Target is an unsigned integer,
* then negate Source, check the requirements of rule 1) and if
* successful, assign static_casted Source to Target and return
*
* 3) Otherwise throw a bad_lexical_cast exception
*
*
* Rule 2) required because boost::lexical_cast has the behavior of
* stringstream, which uses the rules of scanf for conversions. And
* in the C99 standard for unsigned input value minus sign is
* optional, so if a negative number is read, no errors will arise
* and the result will be the two's complement.
*/
template <typename Target, typename Source>
struct dynamic_num_converter_impl
{
static inline bool try_convert(Source arg, Target& result) noexcept {
typedef typename std::conditional<
boost::detail::lcast::is_unsigned<Target>::value &&
(boost::detail::lcast::is_signed<Source>::value || std::is_floating_point<Source>::value) &&
!(std::is_same<Source, bool>::value) &&
!(std::is_same<Target, bool>::value),
lexical_cast_dynamic_num_ignoring_minus,
lexical_cast_dynamic_num_not_ignoring_minus
>::type caster_type;
return caster_type::try_convert(arg, result);
}
};
}} // namespace boost::detail
#endif // #if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#endif // BOOST_LEXICAL_CAST_DETAIL_CONVERTER_NUMERIC_HPP
@@ -1,195 +0,0 @@
// Copyright Kevlin Henney, 2000-2005.
// Copyright Alexander Nasonov, 2006-2010.
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// what: lexical_cast custom keyword cast
// who: contributed by Kevlin Henney,
// enhanced with contributions from Terje Slettebo,
// with additional fixes and suggestions from Gennaro Prota,
// Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
// Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
// Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
// when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2014
#ifndef BOOST_LEXICAL_CAST_DETAIL_INF_NAN_HPP
#define BOOST_LEXICAL_CAST_DETAIL_INF_NAN_HPP
#include <boost/lexical_cast/detail/config.hpp>
#if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
#define BOOST_LCAST_NO_WCHAR_T
#endif
#include <boost/limits.hpp>
#include <boost/config/workaround.hpp>
#include <boost/core/cmath.hpp>
#include <cstddef>
#include <cstring>
#endif // #ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/lexical_cast/detail/lcast_char_constants.hpp>
namespace boost {
namespace detail
{
template <class CharT>
bool lc_iequal(const CharT* val, const CharT* lcase, const CharT* ucase, unsigned int len) noexcept {
for( unsigned int i=0; i < len; ++i ) {
if ( val[i] != lcase[i] && val[i] != ucase[i] ) return false;
}
return true;
}
/* Returns true and sets the correct value if found NaN or Inf. */
template <class CharT, class T>
inline bool parse_inf_nan_impl(const CharT* begin, const CharT* end, T& value
, const CharT* lc_NAN, const CharT* lc_nan
, const CharT* lc_INFINITY, const CharT* lc_infinity
, const CharT opening_brace, const CharT closing_brace) noexcept
{
if (begin == end) return false;
const CharT minus = lcast_char_constants<CharT>::minus;
const CharT plus = lcast_char_constants<CharT>::plus;
const int inifinity_size = 8; // == sizeof("infinity") - 1
/* Parsing +/- */
bool const has_minus = (*begin == minus);
if (has_minus || *begin == plus) {
++ begin;
}
if (end - begin < 3) return false;
if (lc_iequal(begin, lc_nan, lc_NAN, 3)) {
begin += 3;
if (end != begin) {
/* It is 'nan(...)' or some bad input*/
if (end - begin < 2) return false; // bad input
-- end;
if (*begin != opening_brace || *end != closing_brace) return false; // bad input
}
if( !has_minus ) value = std::numeric_limits<T>::quiet_NaN();
else value = boost::core::copysign(std::numeric_limits<T>::quiet_NaN(), static_cast<T>(-1));
return true;
} else if (
( /* 'INF' or 'inf' */
end - begin == 3 // 3 == sizeof('inf') - 1
&& lc_iequal(begin, lc_infinity, lc_INFINITY, 3)
)
||
( /* 'INFINITY' or 'infinity' */
end - begin == inifinity_size
&& lc_iequal(begin, lc_infinity, lc_INFINITY, inifinity_size)
)
)
{
if( !has_minus ) value = std::numeric_limits<T>::infinity();
else value = -std::numeric_limits<T>::infinity();
return true;
}
return false;
}
template <class CharT, class T>
const CharT* get_inf_nan_impl(T value
, const CharT* lc_nan
, const CharT* lc_minus_nan
, const CharT* lc_infinity
, const CharT* lc_minus_infinity) noexcept
{
if (boost::core::isnan(value)) {
if (boost::core::signbit(value)) {
return lc_minus_nan;
}
return lc_nan;
} else if (boost::core::isinf(value)) {
if (boost::core::signbit(value)) {
return lc_minus_infinity;
}
return lc_infinity;
}
return nullptr;
}
#ifndef BOOST_LCAST_NO_WCHAR_T
template <class T>
bool parse_inf_nan(const wchar_t* begin, const wchar_t* end, T& value) noexcept {
return parse_inf_nan_impl(begin, end, value
, L"NAN", L"nan"
, L"INFINITY", L"infinity"
, L'(', L')');
}
template <class T>
const wchar_t* get_inf_nan(T value, wchar_t) noexcept {
return detail::get_inf_nan_impl(value, L"nan", L"-nan", L"inf", L"-inf");
}
#endif
#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
template <class T>
bool parse_inf_nan(const char16_t* begin, const char16_t* end, T& value) noexcept {
return parse_inf_nan_impl(begin, end, value
, u"NAN", u"nan"
, u"INFINITY", u"infinity"
, u'(', u')');
}
template <class T>
const char16_t* get_inf_nan(T value, char16_t) noexcept {
return detail::get_inf_nan_impl(value, u"nan", u"-nan", u"inf", u"-inf");
}
#endif
#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
template <class T>
bool parse_inf_nan(const char32_t* begin, const char32_t* end, T& value) noexcept {
return parse_inf_nan_impl(begin, end, value
, U"NAN", U"nan"
, U"INFINITY", U"infinity"
, U'(', U')');
}
template <class T>
const char32_t* get_inf_nan(T value, char32_t) noexcept {
return detail::get_inf_nan_impl(value, U"nan", U"-nan", U"inf", U"-inf");
}
#endif
template <class CharT, class T>
bool parse_inf_nan(const CharT* begin, const CharT* end, T& value) noexcept {
return parse_inf_nan_impl(begin, end, value
, "NAN", "nan"
, "INFINITY", "infinity"
, '(', ')');
}
template <class T>
const char* get_inf_nan(T value, char) noexcept {
return detail::get_inf_nan_impl(value, "nan", "-nan", "inf", "-inf");
}
}
} // namespace boost
#undef BOOST_LCAST_NO_WCHAR_T
#endif // #if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#endif // BOOST_LEXICAL_CAST_DETAIL_INF_NAN_HPP
@@ -1,60 +0,0 @@
// Copyright Kevlin Henney, 2000-2005.
// Copyright Alexander Nasonov, 2006-2010.
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// what: lexical_cast custom keyword cast
// who: contributed by Kevlin Henney,
// enhanced with contributions from Terje Slettebo,
// with additional fixes and suggestions from Gennaro Prota,
// Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
// Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
// Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
// when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2014
#ifndef BOOST_LEXICAL_CAST_DETAIL_IS_CHARACTER_HPP
#define BOOST_LEXICAL_CAST_DETAIL_IS_CHARACTER_HPP
#include <boost/lexical_cast/detail/config.hpp>
#if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#include <type_traits>
#endif // #ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
namespace boost { namespace detail {
// returns true, if T is one of the character types
template < typename T >
using is_character = std::integral_constant<
bool,
std::is_same< T, char >::value ||
#if !defined(BOOST_NO_STRINGSTREAM) && !defined(BOOST_NO_STD_WSTRING)
std::is_same< T, wchar_t >::value ||
#endif
#ifndef BOOST_NO_CXX11_CHAR16_T
std::is_same< T, char16_t >::value ||
#endif
#ifndef BOOST_NO_CXX11_CHAR32_T
std::is_same< T, char32_t >::value ||
#endif
std::is_same< T, unsigned char >::value ||
std::is_same< T, signed char >::value
>;
}}
#endif // #if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#endif // BOOST_LEXICAL_CAST_DETAIL_IS_CHARACTER_HPP
@@ -1,82 +0,0 @@
// Copyright Kevlin Henney, 2000-2005.
// Copyright Alexander Nasonov, 2006-2010.
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_LEXICAL_CAST_DETAIL_CONVERTER_LEXICAL_BASIC_UNLOCKEDBUF_HPP
#define BOOST_LEXICAL_CAST_DETAIL_CONVERTER_LEXICAL_BASIC_UNLOCKEDBUF_HPP
#include <boost/lexical_cast/detail/config.hpp>
#if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#ifdef BOOST_NO_STRINGSTREAM
#include <strstream>
#else
#include <sstream>
#endif
#include <boost/detail/basic_pointerbuf.hpp>
#ifndef BOOST_NO_CWCHAR
# include <cwchar>
#endif
#endif // #ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
namespace boost { namespace detail { namespace lcast {
// acts as a stream buffer which wraps around a pair of pointers
// and gives acces to internals
template <class BufferType, class CharT>
class basic_unlockedbuf : public basic_pointerbuf<CharT, BufferType> {
public:
typedef basic_pointerbuf<CharT, BufferType> base_type;
typedef typename base_type::streamsize streamsize;
using base_type::pptr;
using base_type::pbase;
using base_type::setbuf;
};
#if defined(BOOST_NO_STRINGSTREAM)
template <class CharT, class Traits>
using out_stream_t = std::ostream;
template <class CharT, class Traits>
using stringbuffer_t = basic_unlockedbuf<std::strstreambuf, char>;
#elif defined(BOOST_NO_STD_LOCALE)
template <class CharT, class Traits>
using out_stream_t = std::ostream;
template <class CharT, class Traits>
using stringbuffer_t = basic_unlockedbuf<std::stringbuf, char>;
template <class CharT, class Traits>
using buffer_t = basic_unlockedbuf<std::streambuf, char>;
#else
template <class CharT, class Traits>
using out_stream_t = std::basic_ostream<CharT, Traits>;
template <class CharT, class Traits>
using stringbuffer_t = basic_unlockedbuf<std::basic_stringbuf<CharT, Traits>, CharT>;
template <class CharT, class Traits>
using buffer_t = basic_unlockedbuf<std::basic_streambuf<CharT, Traits>, CharT>;
#endif
}}} // namespace boost::detail::lcast
#endif // #if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#endif // BOOST_LEXICAL_CAST_DETAIL_CONVERTER_LEXICAL_BASIC_UNLOCKEDBUF_HPP
@@ -1,53 +0,0 @@
// Copyright Kevlin Henney, 2000-2005.
// Copyright Alexander Nasonov, 2006-2010.
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// what: lexical_cast custom keyword cast
// who: contributed by Kevlin Henney,
// enhanced with contributions from Terje Slettebo,
// with additional fixes and suggestions from Gennaro Prota,
// Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
// Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
// Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
// when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2014
#ifndef BOOST_LEXICAL_CAST_DETAIL_LCAST_CHAR_CONSTANTS_HPP
#define BOOST_LEXICAL_CAST_DETAIL_LCAST_CHAR_CONSTANTS_HPP
#include <boost/lexical_cast/detail/config.hpp>
#if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#endif // #ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
namespace boost
{
namespace detail // '0', '-', '+', 'e', 'E' and '.' constants
{
template < typename Char >
struct lcast_char_constants {
// We check in tests assumption that static casted character is
// equal to correctly written C++ literal: U'0' == static_cast<char32_t>('0')
BOOST_STATIC_CONSTANT(Char, zero = static_cast<Char>('0'));
BOOST_STATIC_CONSTANT(Char, minus = static_cast<Char>('-'));
BOOST_STATIC_CONSTANT(Char, plus = static_cast<Char>('+'));
BOOST_STATIC_CONSTANT(Char, lowercase_e = static_cast<Char>('e'));
BOOST_STATIC_CONSTANT(Char, capital_e = static_cast<Char>('E'));
BOOST_STATIC_CONSTANT(Char, c_decimal_separator = static_cast<Char>('.'));
};
}
} // namespace boost
#endif // #if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#endif // BOOST_LEXICAL_CAST_DETAIL_LCAST_CHAR_CONSTANTS_HPP
@@ -1,95 +0,0 @@
// Copyright Alexander Nasonov & Paul A. Bristow 2006.
// Use, modification and distribution are subject to the
// Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt
// or copy at http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_DETAIL_LCAST_PRECISION_HPP_INCLUDED
#define BOOST_DETAIL_LCAST_PRECISION_HPP_INCLUDED
#include <boost/lexical_cast/detail/config.hpp>
#if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#include <climits>
#include <ios>
#include <limits>
#endif // #ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
namespace boost { namespace detail {
// Calculate an argument to pass to std::ios_base::precision from
// lexical_cast.
template<class T>
struct lcast_precision
{
using limits = std::numeric_limits<T>;
static constexpr bool use_default_precision =
!limits::is_specialized || limits::is_exact
;
static constexpr bool is_specialized_bin =
!use_default_precision &&
limits::radix == 2 && limits::digits > 0
;
static constexpr bool is_specialized_dec =
!use_default_precision &&
limits::radix == 10 && limits::digits10 > 0
;
static constexpr std::streamsize streamsize_max =
(std::numeric_limits<std::streamsize>::max)()
;
static constexpr unsigned int precision_dec = limits::digits10 + 1U;
static_assert(!is_specialized_dec ||
precision_dec <= streamsize_max + 0UL
, "");
static constexpr unsigned long precision_bin =
2UL + limits::digits * 30103UL / 100000UL
;
static_assert(!is_specialized_bin ||
(limits::digits + 0UL < ULONG_MAX / 30103UL &&
precision_bin > limits::digits10 + 0UL &&
precision_bin <= streamsize_max + 0UL)
, "");
static constexpr std::streamsize value =
is_specialized_bin ? precision_bin
: is_specialized_dec ? precision_dec : 6
;
};
template<class T>
inline void lcast_set_precision(std::ios_base& stream, T*)
{
stream.precision(lcast_precision<T>::value);
}
template<class Source, class Target>
inline void lcast_set_precision(std::ios_base& stream, Source*, Target*)
{
std::streamsize const s = lcast_precision<Source>::value;
std::streamsize const t = lcast_precision<Target*>::value;
stream.precision(s > t ? s : t);
}
}}
#endif // #if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#endif // BOOST_DETAIL_LCAST_PRECISION_HPP_INCLUDED
@@ -1,308 +0,0 @@
// Copyright Kevlin Henney, 2000-2005.
// Copyright Alexander Nasonov, 2006-2010.
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// what: lexical_cast custom keyword cast
// who: contributed by Kevlin Henney,
// enhanced with contributions from Terje Slettebo,
// with additional fixes and suggestions from Gennaro Prota,
// Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
// Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
// Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
// when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2014
#ifndef BOOST_LEXICAL_CAST_DETAIL_LCAST_UNSIGNED_CONVERTERS_HPP
#define BOOST_LEXICAL_CAST_DETAIL_LCAST_UNSIGNED_CONVERTERS_HPP
#include <boost/lexical_cast/detail/config.hpp>
#if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#include <climits>
#include <cstddef>
#include <string>
#include <cstring>
#include <cstdio>
#include <type_traits>
#include <boost/limits.hpp>
#include <boost/config/workaround.hpp>
#include <boost/lexical_cast/detail/type_traits.hpp>
#ifndef BOOST_NO_STD_LOCALE
# include <locale>
#else
# ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
// Getting error at this point means, that your STL library is old/lame/misconfigured.
// If nothing can be done with STL library, define BOOST_LEXICAL_CAST_ASSUME_C_LOCALE,
// but beware: lexical_cast will understand only 'C' locale delimeters and thousands
// separators.
# error "Unable to use <locale> header. Define BOOST_LEXICAL_CAST_ASSUME_C_LOCALE to force "
# error "boost::lexical_cast to use only 'C' locale during conversions."
# endif
#endif
#include <boost/lexical_cast/detail/lcast_char_constants.hpp>
#include <boost/core/noncopyable.hpp>
#endif // #ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/lexical_cast/detail/lcast_char_constants.hpp>
namespace boost
{
namespace detail // lcast_to_unsigned
{
template<class T>
#if defined(__clang__) && (__clang_major__ > 3 || __clang_minor__ > 6)
__attribute__((no_sanitize("unsigned-integer-overflow")))
#endif
inline
typename boost::detail::lcast::make_unsigned<T>::type lcast_to_unsigned(const T value) noexcept {
typedef typename boost::detail::lcast::make_unsigned<T>::type result_type;
return value < 0
? static_cast<result_type>(0u - static_cast<result_type>(value))
: static_cast<result_type>(value);
}
}
namespace detail // lcast_put_unsigned
{
template <class Traits, class T, class CharT>
class lcast_put_unsigned: boost::noncopyable {
typedef typename Traits::int_type int_type;
typename std::conditional<
(sizeof(unsigned) > sizeof(T))
, unsigned
, T
>::type m_value;
CharT* m_finish;
CharT const m_czero;
int_type const m_zero;
public:
lcast_put_unsigned(const T n_param, CharT* finish) noexcept
: m_value(n_param), m_finish(finish)
, m_czero(lcast_char_constants<CharT>::zero), m_zero(Traits::to_int_type(m_czero))
{
#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
static_assert(!std::numeric_limits<T>::is_signed, "");
#endif
}
CharT* convert() {
#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
std::locale loc;
if (loc == std::locale::classic()) {
return main_convert_loop();
}
typedef std::numpunct<CharT> numpunct;
numpunct const& np = BOOST_USE_FACET(numpunct, loc);
std::string const grouping = np.grouping();
std::string::size_type const grouping_size = grouping.size();
if (!grouping_size || grouping[0] <= 0) {
return main_convert_loop();
}
#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
// Check that ulimited group is unreachable:
static_assert(std::numeric_limits<T>::digits10 < CHAR_MAX, "");
#endif
CharT const thousands_sep = np.thousands_sep();
std::string::size_type group = 0; // current group number
char last_grp_size = grouping[0];
char left = last_grp_size;
do {
if (left == 0) {
++group;
if (group < grouping_size) {
char const grp_size = grouping[group];
last_grp_size = (grp_size <= 0 ? static_cast<char>(CHAR_MAX) : grp_size);
}
left = last_grp_size;
--m_finish;
Traits::assign(*m_finish, thousands_sep);
}
--left;
} while (main_convert_iteration());
return m_finish;
#else
return main_convert_loop();
#endif
}
private:
inline bool main_convert_iteration() noexcept {
--m_finish;
int_type const digit = static_cast<int_type>(m_value % 10U);
Traits::assign(*m_finish, Traits::to_char_type(m_zero + digit));
m_value /= 10;
return !!m_value; // suppressing warnings
}
inline CharT* main_convert_loop() noexcept {
while (main_convert_iteration());
return m_finish;
}
};
}
namespace detail // lcast_ret_unsigned
{
template <class Traits, class T, class CharT>
class lcast_ret_unsigned: boost::noncopyable {
bool m_multiplier_overflowed;
T m_multiplier;
T& m_value;
const CharT* const m_begin;
const CharT* m_end;
public:
lcast_ret_unsigned(T& value, const CharT* const begin, const CharT* end) noexcept
: m_multiplier_overflowed(false), m_multiplier(1), m_value(value), m_begin(begin), m_end(end)
{
#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
static_assert(!std::numeric_limits<T>::is_signed, "");
// GCC when used with flag -std=c++0x may not have std::numeric_limits
// specializations for __int128 and unsigned __int128 types.
// Try compilation with -std=gnu++0x or -std=gnu++11.
//
// http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40856
static_assert(std::numeric_limits<T>::is_specialized,
"std::numeric_limits are not specialized for integral type passed to boost::lexical_cast"
);
#endif
}
inline bool convert() {
CharT const czero = lcast_char_constants<CharT>::zero;
--m_end;
m_value = static_cast<T>(0);
if (m_begin > m_end || *m_end < czero || *m_end >= czero + 10)
return false;
m_value = static_cast<T>(*m_end - czero);
--m_end;
#ifdef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
return main_convert_loop();
#else
std::locale loc;
if (loc == std::locale::classic()) {
return main_convert_loop();
}
typedef std::numpunct<CharT> numpunct;
numpunct const& np = BOOST_USE_FACET(numpunct, loc);
std::string const& grouping = np.grouping();
std::string::size_type const grouping_size = grouping.size();
/* According to Programming languages - C++
* we MUST check for correct grouping
*/
if (!grouping_size || grouping[0] <= 0) {
return main_convert_loop();
}
unsigned char current_grouping = 0;
CharT const thousands_sep = np.thousands_sep();
char remained = static_cast<char>(grouping[current_grouping] - 1);
for (;m_end >= m_begin; --m_end)
{
if (remained) {
if (!main_convert_iteration()) {
return false;
}
--remained;
} else {
if ( !Traits::eq(*m_end, thousands_sep) ) //|| begin == end ) return false;
{
/*
* According to Programming languages - C++
* Digit grouping is checked. That is, the positions of discarded
* separators is examined for consistency with
* use_facet<numpunct<charT> >(loc ).grouping()
*
* BUT what if there is no separators at all and grouping()
* is not empty? Well, we have no extraced separators, so we
* won`t check them for consistency. This will allow us to
* work with "C" locale from other locales
*/
return main_convert_loop();
} else {
if (m_begin == m_end) return false;
if (current_grouping < grouping_size - 1) ++current_grouping;
remained = grouping[current_grouping];
}
}
} /*for*/
return true;
#endif
}
private:
// Iteration that does not care about grouping/separators and assumes that all
// input characters are digits
#if defined(__clang__) && (__clang_major__ > 3 || __clang_minor__ > 6)
__attribute__((no_sanitize("unsigned-integer-overflow")))
#endif
inline bool main_convert_iteration() noexcept {
CharT const czero = lcast_char_constants<CharT>::zero;
T const maxv = (std::numeric_limits<T>::max)();
m_multiplier_overflowed = m_multiplier_overflowed || (maxv/10 < m_multiplier);
m_multiplier = static_cast<T>(m_multiplier * 10);
T const dig_value = static_cast<T>(*m_end - czero);
T const new_sub_value = static_cast<T>(m_multiplier * dig_value);
// We must correctly handle situations like `000000000000000000000000000001`.
// So we take care of overflow only if `dig_value` is not '0'.
if (*m_end < czero || *m_end >= czero + 10 // checking for correct digit
|| (dig_value && ( // checking for overflow of ...
m_multiplier_overflowed // ... multiplier
|| static_cast<T>(maxv / dig_value) < m_multiplier // ... subvalue
|| static_cast<T>(maxv - new_sub_value) < m_value // ... whole expression
))
) return false;
m_value = static_cast<T>(m_value + new_sub_value);
return true;
}
bool main_convert_loop() noexcept {
for ( ; m_end >= m_begin; --m_end) {
if (!main_convert_iteration()) {
return false;
}
}
return true;
}
};
}
} // namespace boost
#endif // #if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#endif // BOOST_LEXICAL_CAST_DETAIL_LCAST_UNSIGNED_CONVERTERS_HPP
@@ -1,81 +0,0 @@
// Copyright Peter Dimov, 2025.
// Copyright Romain Geissler, 2025.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_LEXICAL_CAST_DETAIL_TYPE_TRAITS_HPP
#define BOOST_LEXICAL_CAST_DETAIL_TYPE_TRAITS_HPP
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#include <type_traits>
namespace boost { namespace detail { namespace lcast {
// libstdc++ from gcc <= 15 doesn't provide support for __int128 in the standard traits,
// so define them explicitly.
// This was fixed with gcc >= 16, so we may eventually remove this workaround and use
// directly the standard type_traits.
template<class T> struct is_integral: public std::is_integral<T>
{
};
template<class T> struct is_signed: public std::is_signed<T>
{
};
template<class T> struct is_unsigned: public std::is_unsigned<T>
{
};
template<class T> struct make_unsigned: public std::make_unsigned<T>
{
};
#if defined(__SIZEOF_INT128__)
template<> struct is_integral<__int128_t>: public std::true_type
{
};
template<> struct is_integral<__uint128_t>: public std::true_type
{
};
template<> struct is_signed<__int128_t>: public std::true_type
{
};
template<> struct is_signed<__uint128_t>: public std::false_type
{
};
template<> struct is_unsigned<__int128_t>: public std::false_type
{
};
template<> struct is_unsigned<__uint128_t>: public std::true_type
{
};
template<> struct make_unsigned<__int128_t>
{
typedef __uint128_t type;
};
template<> struct make_unsigned<__uint128_t>
{
typedef __uint128_t type;
};
#endif
}}} // namespace boost::detail::lcast
#endif // BOOST_LEXICAL_CAST_DETAIL_TYPE_TRAITS_HPP
@@ -1,49 +0,0 @@
// Copyright Kevlin Henney, 2000-2005.
// Copyright Alexander Nasonov, 2006-2010.
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// what: lexical_cast custom keyword cast
// who: contributed by Kevlin Henney,
// enhanced with contributions from Terje Slettebo,
// with additional fixes and suggestions from Gennaro Prota,
// Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
// Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
// Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
// when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2014
#ifndef BOOST_LEXICAL_CAST_DETAIL_WIDEST_CHAR_HPP
#define BOOST_LEXICAL_CAST_DETAIL_WIDEST_CHAR_HPP
#include <boost/lexical_cast/detail/config.hpp>
#if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#include <type_traits>
#endif // #ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
namespace boost { namespace detail {
template <typename TargetChar, typename SourceChar>
using widest_char = std::conditional<
(sizeof(TargetChar) > sizeof(SourceChar))
, TargetChar
, SourceChar
>;
}} // namespace boost::detail
#endif // #if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#endif // BOOST_LEXICAL_CAST_DETAIL_WIDEST_CHAR_HPP
@@ -1,105 +0,0 @@
// Copyright Kevlin Henney, 2000-2005.
// Copyright Alexander Nasonov, 2006-2010.
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// what: lexical_cast custom keyword cast
// who: contributed by Kevlin Henney,
// enhanced with contributions from Terje Slettebo,
// with additional fixes and suggestions from Gennaro Prota,
// Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
// Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
// Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
// when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2014
#ifndef BOOST_LEXICAL_CAST_TRY_LEXICAL_CONVERT_HPP
#define BOOST_LEXICAL_CAST_TRY_LEXICAL_CONVERT_HPP
#include <boost/lexical_cast/detail/config.hpp>
#if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#ifndef BOOST_LEXICAL_CAST_INTERFACE_UNIT
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#include <type_traits>
#endif
#include <boost/lexical_cast/detail/buffer_view.hpp>
#include <boost/lexical_cast/detail/is_character.hpp>
#include <boost/lexical_cast/detail/converter_numeric.hpp>
#include <boost/lexical_cast/detail/converter_lexical.hpp>
namespace boost {
namespace detail
{
template<typename Target, typename Source>
using is_arithmetic_and_not_xchars = std::integral_constant<
bool,
!(boost::detail::is_character<Target>::value) &&
!(boost::detail::is_character<Source>::value) &&
std::is_arithmetic<Source>::value &&
std::is_arithmetic<Target>::value
>;
}
namespace conversion { namespace detail {
BOOST_LEXICAL_CAST_BEGIN_MODULE_EXPORT
template <typename Target, typename Source>
inline bool try_lexical_convert(const Source& arg, Target& result)
{
static_assert(
!std::is_volatile<Source>::value,
"Boost.LexicalCast does not support volatile input");
typedef typename boost::detail::array_to_pointer_decay<Source>::type src;
typedef boost::detail::is_arithmetic_and_not_xchars<Target, src >
shall_we_copy_with_dynamic_check_t;
typedef typename std::conditional<
shall_we_copy_with_dynamic_check_t::value,
boost::detail::dynamic_num_converter_impl<Target, src >,
boost::detail::lexical_converter_impl<Target, src >
>::type caster_type;
return caster_type::try_convert(arg, result);
}
template <typename Target, typename CharacterT>
inline bool try_lexical_convert(const CharacterT* chars, std::size_t count, Target& result)
{
static_assert(
boost::detail::is_character<CharacterT>::value,
"This overload of try_lexical_convert is meant to be used only with arrays of characters."
);
return ::boost::conversion::detail::try_lexical_convert(
::boost::conversion::detail::make_buffer_view(chars, chars + count),
result
);
}
BOOST_LEXICAL_CAST_END_MODULE_EXPORT
}} // namespace conversion::detail
namespace conversion {
BOOST_LEXICAL_CAST_BEGIN_MODULE_EXPORT
// ADL barrier
using ::boost::conversion::detail::try_lexical_convert;
BOOST_LEXICAL_CAST_END_MODULE_EXPORT
}
} // namespace boost
#endif // #if !defined(BOOST_USE_MODULES) || defined(BOOST_LEXICAL_CAST_INTERFACE_UNIT)
#endif // BOOST_LEXICAL_CAST_TRY_LEXICAL_CONVERT_HPP
+34 -11
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Copyright 2005-2007 Daniel James.
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<h1><img border="0" src="../../boost.png" align="center" width="277" height="86">Boost
Conversion Library</h1>
<p>The Conversion Library improves program safety and clarity by performing
otherwise messy conversions.&nbsp; It includes cast-style function templates designed to complement the C++
Standard's built-in casts.</p>
<p>To reduce coupling, particularly to standard library IOStreams, the Boost
Conversion Library is
supplied by several headers:</p>
<ul>
<li>The <a href="cast.htm">boost/cast</a> header provides <b>polymorphic_cast&lt;&gt;</b>
and <b>polymorphic_downcast&lt;&gt;</b> to perform safe casting between
polymorphic types, and <b> numeric_cast</b><i>&lt;&gt;</i> to perform safe casting
between numeric types.<br>
</li>
<li>The <a href="lexical_cast.htm">boost/lexical_cast</a> header provides <b>lexical_cast&lt;&gt;</b>
general literal text conversions, such as an <code>int</code> represented as
a <code>string</code>, or vice-versa.</li>
</ul>
<hr>
<p>Revised <!--webbot bot="Timestamp" S-Type="EDITED"
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<!-- saved from url=(0022)http://internet.e-mail -->
<!doctype html public "-//W3C//DTD HTML Transitional 4.0//EN">
<html>
<head>
<title>lexical_cast</title>
<meta name="author" content="Kevlin Henney, mailto:kevlin@curbralan.com">
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</head>
<body bgcolor="#FFFFFF" text="#000000">
<h1><img src="../../boost.png" alt="boost.png (6897 bytes)" align="center" width="277" height="86">Header
<a href="../../boost/lexical_cast.hpp">boost/lexical_cast.hpp</a></h1>
<ul type="square">
<li>
<a href="#motivation">Motivation</a></li>
<li>
<a href="#examples">Examples</a></li>
<li>
<a href="#synopsis">Synopsis</a></li>
<li>
<a href="#lexical_cast"><code>lexical_cast</code></a></li>
<li>
<a href="#bad_lexical_cast"><code>bad_lexical_cast</code></a></li>
<li>
<a href="#changes">Changes</a></li>
</ul>
<hr>
<h2><a name="motivation">Motivation</a></h2>
Sometimes a value must be converted to a literal text form, such as an <code>int</code>
represented as a <code>string</code>, or vice-versa, when a <code>string</code>
is interpreted as an <code>int</code>. Such examples are common when converting
between data types internal to a program and representation external to a
program, such as windows and configuration files.
<p>
The standard C and C++ libraries offer a number of facilities for performing
such conversions. However, they vary with their ease of use, extensibility, and
safety.
<p>
For instance, there are a number of limitations with the family of standard C
functions typified by <code>atoi</code>:
<ul type="square">
<li>
Conversion is supported in one direction only: from text to internal data type.
Converting the other way using the C library requires either the inconvenience
and compromised safety of the <code>sprintf</code> function, or the loss of
portability associated with non-standard functions such as <code>itoa</code>.
</li>
<li>
The range of types supported is only a subset of the built-in numeric types,
namely <code>int</code>, <code>long</code>, and <code>double</code>.
</li>
<li>
The range of types cannot be extended in a uniform manner. For instance,
conversion from string representation to <code>complex</code> or <code>rational</code>.
</li>
</ul>
The standard C functions typified by <code>strtol</code> have the same basic
limitations, but offer finer control over the conversion process. However, for
the common case such control is often either not required or not used. The <code>scanf</code>
family of functions offer even greater control, but also lack safety and ease
of use.
<p>
The standard C++ library offers <code>stringstream</code> for the kind of
in-core formatting being discussed. It offers a great deal of control over the
formatting and conversion of I/O to and from arbitrary types through text.
However, for simple conversions direct use of <code>stringstream</code> can be
either clumsy (with the introduction of extra local variables and the loss of
infix-expression convenience) or obscure (where <code>stringstream</code>
objects are created as temporary objects in an expression). Facets provide a
comprehensive concept and facility for controlling textual representation, but
their perceived complexity and high entry level requires an extreme degree of
involvement for simple conversions, and excludes all but a few programmers.
<p>
The <code>lexical_cast</code> function template offers a convenient and
consistent form for supporting common conversions to and from arbitrary types
when they are represented as text. The simplification it offers is in
expression-level convenience for such conversions. For more involved
conversions, such as where precision or formatting need tighter control than is
offered by the default behavior of <code>lexical_cast</code>, the conventional <code>
stringstream</code> approach is recommended. Where the conversions are
numeric to numeric, <code><a href="cast.htm#numeric_cast">numeric_cast</a></code>
may offer more reasonable behavior than <code>lexical_cast</code>.
<p>
For a good discussion of the options and issues involved in string-based
formatting, including comparison of <code>stringstream</code>, <code>lexical_cast</code>,
and others, see Herb Sutter's article, <a href="http://www.gotw.ca/publications/mill19.htm">
<i>The String Formatters of Manor Farm</i></a>.
<p>
<hr>
<h2><a name="examples">Examples</a></h2>
The following example treats command line arguments as a sequence of numeric
data: <blockquote>
<pre>
int main(int argc, char * argv[])
{
using boost::lexical_cast;
using boost::bad_lexical_cast;
std::vector&lt;short&gt; args;
while(*++argv)
{
try
{
args.push_back(lexical_cast&lt;short&gt;(*argv));
}
catch(bad_lexical_cast &amp;)
{
args.push_back(0);
}
}
...
}
</pre>
</blockquote>The following example uses numeric data in a string expression: <blockquote>
<pre>
void log_message(const std::string &amp;);
void log_errno(int yoko)
{
log_message(&quot;Error &quot; + boost::lexical_cast&lt;std::string&gt;(yoko) + &quot;: &quot; + strerror(yoko));
}
</pre>
</blockquote>
<hr>
<h2><a name="synopsis">Synopsis</a></h2>
Library features defined in <a href="../../boost/lexical_cast.hpp"><code>&quot;boost/lexical_cast.hpp&quot;</code></a>:
<blockquote>
<pre>
namespace boost
{
class <a href="#bad_lexical_cast">bad_lexical_cast</a>;
template&lt;typename Target, typename Source&gt;
Target <a href="#lexical_cast">lexical_cast</a>(Source arg);
}
</pre>
</blockquote>Unit test defined in <a href="lexical_cast_test.cpp"><code>&quot;lexical_cast_test.cpp&quot;</code></a>.
<p>
<hr>
<h2><a name="lexical_cast"><code>lexical_cast</code></a></h2>
<blockquote>
<pre>
template&lt;typename Target, typename Source&gt;
Target lexical_cast(Source arg);
</pre>
</blockquote>Returns the result of streaming <code>arg</code> into a
standard library string-based stream and then out as a <code>Target</code> object.
Where <code>Target</code> is either <code>std::string</code>
or <code>std::wstring</code>, stream extraction takes the whole content
of the string, including spaces, rather than relying on the default
<code>operator&gt;&gt;</code> behavior.
If the conversion is unsuccessful, a <a href="#bad_lexical_cast">
<code>bad_lexical_cast</code></a> exception is thrown.
<p>
The requirements on the argument and result types are:
<ul type="square">
<li>
<code>Source</code> is <i>OutputStreamable</i>, meaning that an <code>operator&lt;&lt;</code>
is defined that takes a <code>std::ostream</code> or <code>std::wostream</code> object on the
left hand side and an instance of the argument type on the right.
</li>
<li>
<code>Target</code> is <i>InputStreamable</i>, meaning that an <code>operator&gt;&gt;</code>
is defined that takes a <code>std::istream</code> or <code>std::wistream</code> object on the left hand side
and an instance of the result type on the right.
</li>
<li>
Both <code>Source</code> and <code>Target</code> are <i>CopyConstructible</i> [20.1.3].
</li>
<li>
<code>Target</code> is <i>DefaultConstructible</i>, meaning that it is possible
to <i>default-initialize</i> an object of that type [8.5, 20.1.4].
</li>
</ul>
The character type of the underlying stream is assumed to be <code>char</code> unless
either the <code>Source</code> or the <code>Target</code> requires wide-character
streaming, in which case the underlying stream uses <code>wchar_t</code>.
<code>Source</code> types that require wide-character streaming are <code>wchar_t</code>,
<code>wchar_t *</code>, and <code>std::wstring</code>. <code>Target</code> types that
require wide-character streaming are <code>wchar_t</code> and <code>std::wstring</code>.
<p>
Where a higher degree of control is required over conversions, <code>std::stringstream</code>
and <code>std::wstringstream</code> offer a more appropriate path. Where non-stream-based conversions are
required, <code>lexical_cast</code>
is the wrong tool for the job and is not special-cased for such scenarios.
<p>
<hr>
<h2><a name="bad_lexical_cast"><code>bad_lexical_cast</code></a></h2>
<blockquote>
<pre>
class bad_lexical_cast : public std::bad_cast
{
public:
... // <i>same member function interface as</i> std::exception
};
</pre>
</blockquote>Exception used to indicate runtime <a href="#lexical_cast"><code>lexical_cast</code></a>
failure.
<hr>
<h2><a name="changes">Changes</a></h2>
<ul type="square">
<li>The previous version of <code>lexical_cast</code> used the default stream precision for reading
and writing floating-point numbers. For numerics that have a corresponding specialization of
<code>std::numeric_limits</code>, the current version now chooses a precision to match.
<li>The previous version of <code>lexical_cast</code> did not support conversion to or from any
wide-character-based types. For compilers with full language and library support for wide characters,
<code>lexical_cast</code> now supports conversions from <code>wchar_t</code>, <code>wchar_t *</code>,
and <code>std::wstring</code> and to <code>wchar_t</code> and <code>std::wstring</code>.
<li>The previous version of <code>lexical_cast</code> assumed that the conventional stream extractor
operators were sufficient for reading values. However, string I/O is asymmetric, with the result
that spaces play the role of I/O separators rather than string content. The current version fixes
this error for <code>std::string</code> and, where supported, <code>std::wstring</code>:
<code>lexical_cast&lt;std::string&gt;("Hello, World")</code> succeeds instead of failing with
a <code>bad_lexical_cast</code> exception.
<li>The previous version of <code>lexical_cast</code> allowed unsafe and meaningless conversions to
pointers. The current version now throws a <code>bad_lexical_cast</code> for conversions to pointers:
<code>lexical_cast&lt;char *&gt;("Goodbye, World")</code> now throws an exception instead of
causing undefined behavior.
</ul>
<p>
<hr>
<div align="right"><small><i>&copy; Copyright Kevlin Henney, 2000&#150;2003</i></small></div>
</body>
</html>
+288
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Terje Slettebø and Kevlin Henney, 2003.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <boost/config.hpp>
#if defined(__INTEL_COMPILER)
#pragma warning(disable: 193 383 488 981 1418 1419)
#elif defined(BOOST_MSVC)
#pragma warning(disable: 4097 4100 4121 4127 4146 4244 4245 4511 4512 4701 4800)
#endif
#include <boost/lexical_cast.hpp>
#include <boost/test/floating_point_comparison.hpp>
#include <boost/test/included/unit_test_framework.hpp>
#if defined(BOOST_NO_STRINGSTREAM) || \
defined(BOOST_NO_STD_WSTRING) || \
defined(BOOST_NO_STD_LOCALE) || \
defined(BOOST_NO_INTRINSIC_WCHAR_T)
#define DISABLE_WIDE_CHAR_SUPPORT
#endif
using namespace boost;
void test_conversion_to_char();
void test_conversion_to_int();
void test_conversion_to_double();
void test_conversion_to_bool();
void test_conversion_to_string();
void test_conversion_from_to_wchar_t_alias();
void test_conversion_to_pointer();
void test_conversion_from_wchar_t();
void test_conversion_to_wchar_t();
void test_conversion_from_wstring();
void test_conversion_to_wstring();
unit_test_framework::test_suite *init_unit_test_suite(int, char **)
{
unit_test_framework::test_suite *suite =
BOOST_TEST_SUITE("lexical_cast unit test");
suite->add(BOOST_TEST_CASE(test_conversion_to_char));
suite->add(BOOST_TEST_CASE(test_conversion_to_int));
suite->add(BOOST_TEST_CASE(test_conversion_to_double));
suite->add(BOOST_TEST_CASE(test_conversion_to_bool));
suite->add(BOOST_TEST_CASE(test_conversion_from_to_wchar_t_alias));
suite->add(BOOST_TEST_CASE(test_conversion_to_pointer));
suite->add(BOOST_TEST_CASE(test_conversion_to_string));
#ifndef DISABLE_WIDE_CHAR_SUPPORT
suite->add(BOOST_TEST_CASE(test_conversion_from_wchar_t));
suite->add(BOOST_TEST_CASE(test_conversion_to_wchar_t));
suite->add(BOOST_TEST_CASE(test_conversion_from_wstring));
suite->add(BOOST_TEST_CASE(test_conversion_to_wstring));
#endif
return suite;
}
void test_conversion_to_char()
{
BOOST_CHECK_EQUAL('A', lexical_cast<char>('A'));
BOOST_CHECK_EQUAL(' ', lexical_cast<char>(' '));
BOOST_CHECK_EQUAL('1', lexical_cast<char>(1));
BOOST_CHECK_EQUAL('0', lexical_cast<char>(0));
BOOST_CHECK_THROW(lexical_cast<char>(123), boost::bad_lexical_cast);
BOOST_CHECK_EQUAL('1', lexical_cast<char>(1.0));
BOOST_CHECK_EQUAL('1', lexical_cast<char>(true));
BOOST_CHECK_EQUAL('0', lexical_cast<char>(false));
BOOST_CHECK_EQUAL('A', lexical_cast<char>("A"));
BOOST_CHECK_EQUAL(' ', lexical_cast<char>(" "));
BOOST_CHECK_THROW(lexical_cast<char>(""), boost::bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<char>("Test"), boost::bad_lexical_cast);
BOOST_CHECK_EQUAL('A', lexical_cast<char>(std::string("A")));
BOOST_CHECK_EQUAL(' ', lexical_cast<char>(std::string(" ")));
BOOST_CHECK_THROW(
lexical_cast<char>(std::string("")), boost::bad_lexical_cast);
BOOST_CHECK_THROW(
lexical_cast<char>(std::string("Test")), boost::bad_lexical_cast);
}
void test_conversion_to_int()
{
BOOST_CHECK_EQUAL(1,lexical_cast<int>('1'));
BOOST_CHECK_EQUAL(0,lexical_cast<int>('0'));
BOOST_CHECK_THROW(lexical_cast<int>('A'),boost::bad_lexical_cast);
BOOST_CHECK_EQUAL(1,lexical_cast<int>(1));
BOOST_CHECK_EQUAL(
(std::numeric_limits<int>::max)(),
lexical_cast<int>((std::numeric_limits<int>::max)()));
BOOST_CHECK_EQUAL(1,lexical_cast<int>(1.0));
BOOST_CHECK_THROW(lexical_cast<int>(1.23), boost::bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<int>(1e20), boost::bad_lexical_cast);
BOOST_CHECK_EQUAL(1, lexical_cast<int>(true));
BOOST_CHECK_EQUAL(0, lexical_cast<int>(false));
BOOST_CHECK_EQUAL(123, lexical_cast<int>("123"));
BOOST_CHECK_THROW(
lexical_cast<int>(" 123"), boost::bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<int>(""), boost::bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<int>("Test"), boost::bad_lexical_cast);
BOOST_CHECK_EQUAL(123, lexical_cast<int>("123"));
BOOST_CHECK_EQUAL(123,lexical_cast<int>(std::string("123")));
BOOST_CHECK_THROW(
lexical_cast<int>(std::string(" 123")), boost::bad_lexical_cast);
BOOST_CHECK_THROW(
lexical_cast<int>(std::string("")), boost::bad_lexical_cast);
BOOST_CHECK_THROW(
lexical_cast<int>(std::string("Test")), boost::bad_lexical_cast);
}
void test_conversion_to_double()
{
BOOST_CHECK_EQUAL(1.0, lexical_cast<double>('1'));
BOOST_CHECK_THROW(lexical_cast<double>('A'), boost::bad_lexical_cast);
BOOST_CHECK_EQUAL(1.0, lexical_cast<double>(1));
BOOST_CHECK_EQUAL(1.23, lexical_cast<double>(1.23));
BOOST_CHECK_CLOSE(
(std::numeric_limits<double>::max)() / 2,
lexical_cast<double>((std::numeric_limits<double>::max)() / 2),
std::numeric_limits<double>::epsilon());
BOOST_CHECK_EQUAL(1.0, lexical_cast<double>(true));
BOOST_CHECK_EQUAL(0.0, lexical_cast<double>(false));
BOOST_CHECK_EQUAL(1.23, lexical_cast<double>("1.23"));
BOOST_CHECK_THROW(lexical_cast<double>(""), boost::bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<double>("Test"), boost::bad_lexical_cast);
BOOST_CHECK_EQUAL(1.23, lexical_cast<double>(std::string("1.23")));
BOOST_CHECK_THROW(
lexical_cast<double>(std::string("")), boost::bad_lexical_cast);
BOOST_CHECK_THROW(
lexical_cast<double>(std::string("Test")), boost::bad_lexical_cast);
}
void test_conversion_to_bool()
{
BOOST_CHECK_EQUAL(true, lexical_cast<bool>('1'));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>('0'));
BOOST_CHECK_THROW(lexical_cast<bool>('A'), boost::bad_lexical_cast);
BOOST_CHECK_EQUAL(true, lexical_cast<bool>(1));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>(0));
BOOST_CHECK_THROW(lexical_cast<bool>(123), boost::bad_lexical_cast);
BOOST_CHECK_EQUAL(true, lexical_cast<bool>(1.0));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>(0.0));
BOOST_CHECK_EQUAL(true, lexical_cast<bool>(true));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>(false));
BOOST_CHECK_EQUAL(true, lexical_cast<bool>("1"));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>("0"));
BOOST_CHECK_THROW(lexical_cast<bool>(""), boost::bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>("Test"), boost::bad_lexical_cast);
BOOST_CHECK_EQUAL(true, lexical_cast<bool>("1"));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>("0"));
BOOST_CHECK_EQUAL(true, lexical_cast<bool>(std::string("1")));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>(std::string("0")));
BOOST_CHECK_THROW(
lexical_cast<bool>(std::string("")), boost::bad_lexical_cast);
BOOST_CHECK_THROW(
lexical_cast<bool>(std::string("Test")), boost::bad_lexical_cast);
}
void test_conversion_to_string()
{
BOOST_CHECK_EQUAL("A", lexical_cast<std::string>('A'));
BOOST_CHECK_EQUAL(" ", lexical_cast<std::string>(' '));
BOOST_CHECK_EQUAL("123", lexical_cast<std::string>(123));
BOOST_CHECK_EQUAL("1.23", lexical_cast<std::string>(1.23));
BOOST_CHECK_EQUAL("1.111111111", lexical_cast<std::string>(1.111111111));
BOOST_CHECK_EQUAL("1",lexical_cast<std::string>(true));
BOOST_CHECK_EQUAL("0",lexical_cast<std::string>(false));
BOOST_CHECK_EQUAL("Test", lexical_cast<std::string>("Test"));
BOOST_CHECK_EQUAL(" ", lexical_cast<std::string>(" "));
BOOST_CHECK_EQUAL("", lexical_cast<std::string>(""));
BOOST_CHECK_EQUAL("Test", lexical_cast<std::string>(std::string("Test")));
BOOST_CHECK_EQUAL(" ", lexical_cast<std::string>(std::string(" ")));
BOOST_CHECK_EQUAL("", lexical_cast<std::string>(std::string("")));
}
void test_conversion_from_to_wchar_t_alias()
{
BOOST_CHECK_EQUAL(123u, lexical_cast<unsigned short>("123"));
BOOST_CHECK_EQUAL(123u, lexical_cast<unsigned int>("123"));
BOOST_CHECK_EQUAL(123u, lexical_cast<unsigned long>("123"));
BOOST_CHECK_EQUAL(std::string("123"),
lexical_cast<std::string>(static_cast<unsigned short>(123)));
BOOST_CHECK_EQUAL(std::string("123"), lexical_cast<std::string>(123u));
BOOST_CHECK_EQUAL(std::string("123"), lexical_cast<std::string>(123ul));
}
void test_conversion_to_pointer()
{
BOOST_CHECK_THROW(lexical_cast<char *>("Test"), boost::bad_lexical_cast);
#ifndef DISABLE_WIDE_CHAR_SUPPORT
BOOST_CHECK_THROW(lexical_cast<wchar_t *>("Test"), boost::bad_lexical_cast);
#endif
}
void test_conversion_from_wchar_t()
{
#ifndef DISABLE_WIDE_CHAR_SUPPORT
BOOST_CHECK_EQUAL(1, lexical_cast<int>(L'1'));
BOOST_CHECK_THROW(lexical_cast<int>(L'A'), boost::bad_lexical_cast);
BOOST_CHECK_EQUAL(123, lexical_cast<int>(L"123"));
BOOST_CHECK_THROW(lexical_cast<int>(L""), boost::bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<int>(L"Test"), boost::bad_lexical_cast);
BOOST_CHECK_EQUAL(1.0, lexical_cast<double>(L'1'));
BOOST_CHECK_THROW(lexical_cast<double>(L'A'), boost::bad_lexical_cast);
BOOST_CHECK_EQUAL(1.23, lexical_cast<double>(L"1.23"));
BOOST_CHECK_THROW(lexical_cast<double>(L""), boost::bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<double>(L"Test"), boost::bad_lexical_cast);
BOOST_CHECK_EQUAL(true, lexical_cast<bool>(L'1'));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>(L'0'));
BOOST_CHECK_THROW(lexical_cast<bool>(L'A'), boost::bad_lexical_cast);
BOOST_CHECK_EQUAL(true, lexical_cast<bool>(L"1"));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>(L"0"));
BOOST_CHECK_THROW(lexical_cast<bool>(L""), boost::bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<bool>(L"Test"), boost::bad_lexical_cast);
#endif
}
void test_conversion_to_wchar_t()
{
#ifndef DISABLE_WIDE_CHAR_SUPPORT
BOOST_CHECK_EQUAL(L'1', lexical_cast<wchar_t>(1));
BOOST_CHECK_EQUAL(L'0', lexical_cast<wchar_t>(0));
BOOST_CHECK_THROW(lexical_cast<wchar_t>(123), boost::bad_lexical_cast);
BOOST_CHECK_EQUAL(L'1', lexical_cast<wchar_t>(1.0));
BOOST_CHECK_EQUAL(L'0', lexical_cast<wchar_t>(0.0));
BOOST_CHECK_EQUAL(L'1', lexical_cast<wchar_t>(true));
BOOST_CHECK_EQUAL(L'0', lexical_cast<wchar_t>(false));
BOOST_CHECK_EQUAL(L'A', lexical_cast<wchar_t>(L'A'));
BOOST_CHECK_EQUAL(L' ', lexical_cast<wchar_t>(L' '));
BOOST_CHECK_EQUAL(L'A', lexical_cast<wchar_t>(L"A"));
BOOST_CHECK_EQUAL(L' ', lexical_cast<wchar_t>(L" "));
BOOST_CHECK_THROW(lexical_cast<wchar_t>(L""), boost::bad_lexical_cast);
BOOST_CHECK_THROW(lexical_cast<wchar_t>(L"Test"), boost::bad_lexical_cast);
BOOST_CHECK_EQUAL(L'A', lexical_cast<wchar_t>(std::wstring(L"A")));
BOOST_CHECK_EQUAL(L' ', lexical_cast<wchar_t>(std::wstring(L" ")));
BOOST_CHECK_THROW(
lexical_cast<wchar_t>(std::wstring(L"")), boost::bad_lexical_cast);
BOOST_CHECK_THROW(
lexical_cast<wchar_t>(std::wstring(L"Test")), boost::bad_lexical_cast);
#endif
}
void test_conversion_from_wstring()
{
#ifndef DISABLE_WIDE_CHAR_SUPPORT
BOOST_CHECK_EQUAL(123, lexical_cast<int>(std::wstring(L"123")));
BOOST_CHECK_THROW(
lexical_cast<int>(std::wstring(L"")), boost::bad_lexical_cast);
BOOST_CHECK_THROW(
lexical_cast<int>(std::wstring(L"Test")), boost::bad_lexical_cast);
BOOST_CHECK_EQUAL(true, lexical_cast<bool>(std::wstring(L"1")));
BOOST_CHECK_EQUAL(false, lexical_cast<bool>(std::wstring(L"0")));
BOOST_CHECK_THROW(
lexical_cast<bool>(std::wstring(L"")), boost::bad_lexical_cast);
BOOST_CHECK_THROW(
lexical_cast<bool>(std::wstring(L"Test")), boost::bad_lexical_cast);
#endif
}
void test_conversion_to_wstring()
{
#ifndef DISABLE_WIDE_CHAR_SUPPORT
BOOST_CHECK(L"123" == lexical_cast<std::wstring>(123));
BOOST_CHECK(L"1.23" == lexical_cast<std::wstring>(1.23));
BOOST_CHECK(L"1.111111111" == lexical_cast<std::wstring>(1.111111111));
BOOST_CHECK(L"1" == lexical_cast<std::wstring>(true));
BOOST_CHECK(L"0" == lexical_cast<std::wstring>(false));
BOOST_CHECK(L"A" == lexical_cast<std::wstring>(L'A'));
BOOST_CHECK(L" " == lexical_cast<std::wstring>(L' '));
BOOST_CHECK(L"Test" == lexical_cast<std::wstring>(L"Test"));
BOOST_CHECK(L" " == lexical_cast<std::wstring>(L" "));
BOOST_CHECK(L"" == lexical_cast<std::wstring>(L""));
BOOST_CHECK(L"Test" == lexical_cast<std::wstring>(std::wstring(L"Test")));
BOOST_CHECK(L" " == lexical_cast<std::wstring>(std::wstring(L" ")));
BOOST_CHECK(L"" == lexical_cast<std::wstring>(std::wstring(L"")));
#endif
}
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@@ -1,16 +0,0 @@
{
"key": "lexical_cast",
"name": "Lexical Cast",
"authors": [
"Kevlin Henney"
],
"description": "General literal text conversions, such as an int represented a string, or vice-versa.",
"category": [
"Miscellaneous",
"String"
],
"maintainers": [
"Antony Polukhin <antoshkka -at- gmail.com>"
],
"cxxstd": "11"
}
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@@ -1,57 +0,0 @@
// Copyright (c) 2016-2025 Antony Polukhin
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// To compile manually use a command like the folowing:
// clang++ -I ../include -std=c++20 --precompile -x c++-module boost_lexical_cast.cppm
module;
#include <boost/assert.hpp>
#include <boost/config.hpp>
#include <boost/config/workaround.hpp>
#include <boost/container/container_fwd.hpp>
#include <boost/core/cmath.hpp>
#include <boost/core/noncopyable.hpp>
#include <boost/core/snprintf.hpp>
#include <boost/limits.hpp>
#include <boost/throw_exception.hpp>
#include <boost/detail/basic_pointerbuf.hpp>
#ifndef BOOST_LEXICAL_CAST_USE_STD_MODULE
#include <array>
#include <climits>
#include <cstddef>
#include <cstdio>
#include <cstring>
#ifndef BOOST_NO_CWCHAR
# include <cwchar>
#endif
#include <exception>
#include <iosfwd>
#include <istream>
#ifndef BOOST_NO_STD_LOCALE
# include <locale>
#endif
#include <sstream>
#include <string>
#include <string_view>
#include <typeinfo>
#include <type_traits>
#endif
#define BOOST_LEXICAL_CAST_INTERFACE_UNIT
export module boost.lexical_cast;
#ifdef BOOST_LEXICAL_CAST_USE_STD_MODULE
import std;
#endif
#ifdef __clang__
# pragma clang diagnostic ignored "-Winclude-angled-in-module-purview"
#endif
#include <boost/lexical_cast.hpp>
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@@ -1,16 +0,0 @@
// Copyright (c) 2024-2025 Antony Polukhin
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// To compile manually use a command like the following:
// clang++ -std=c++20 -fmodule-file=lexical_cast.pcm lexical_cast.pcm usage_sample.cpp
//[lexical_cast_module_example
import boost.lexical_cast;
int main() {
return boost::lexical_cast<int>("0");
}
//]
+100
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@@ -0,0 +1,100 @@
// boost utility cast test program -----------------------------------------//
// (C) Copyright Beman Dawes, Dave Abrahams 1999. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// See http://www.boost.org for most recent version including documentation.
// Revision History
// 28 Set 04 factored out numeric_cast<> test (Fernando Cacciola)
// 20 Jan 01 removed use of <limits> for portability to raw GCC (David Abrahams)
// 28 Jun 00 implicit_cast removed (Beman Dawes)
// 30 Aug 99 value_cast replaced by numeric_cast
// 3 Aug 99 Initial Version
#include <iostream>
#include <climits>
#include <cfloat> // for DBL_MAX (Peter Schmid)
#include <boost/cast.hpp>
#include "boost/test/minimal.hpp"
# if SCHAR_MAX == LONG_MAX
# error "This test program doesn't work if SCHAR_MAX == LONG_MAX"
# endif
using namespace boost;
using std::cout;
int test_main( int argc, char * argv[] )
{
# ifdef NDEBUG
cout << "NDEBUG is defined\n";
# else
cout << "NDEBUG is not defined\n";
# endif
cout << "\nBeginning tests...\n";
// test implicit_cast and numeric_cast -------------------------------------//
// tests which should succeed
long small_value = 1;
long small_negative_value = -1;
long large_value = LONG_MAX;
long large_negative_value = LONG_MIN;
signed char c = 0;
c = large_value; // see if compiler generates warning
c = numeric_cast<signed char>( small_value );
BOOST_CHECK( c == 1 );
c = 0;
c = numeric_cast<signed char>( small_value );
BOOST_CHECK( c == 1 );
c = 0;
c = numeric_cast<signed char>( small_negative_value );
BOOST_CHECK( c == -1 );
// These tests courtesy of Joe R NWP Swatosh<joe.r.swatosh@usace.army.mil>
BOOST_CHECK( 0.0f == numeric_cast<float>( 0.0 ) );
BOOST_CHECK( 0.0 == numeric_cast<double>( 0.0 ) );
// tests which should result in errors being detected
bool caught_exception = false;
try { c = numeric_cast<signed char>( large_value ); }
catch (bad_numeric_cast)
{ cout<<"caught bad_numeric_cast #1\n"; caught_exception = true; }
BOOST_CHECK ( caught_exception );
caught_exception = false;
try { c = numeric_cast<signed char>( large_negative_value ); }
catch (bad_numeric_cast)
{ cout<<"caught bad_numeric_cast #2\n"; caught_exception = true; }
BOOST_CHECK ( caught_exception );
unsigned long ul;
caught_exception = false;
try { ul = numeric_cast<unsigned long>( large_negative_value ); }
catch (bad_numeric_cast)
{ cout<<"caught bad_numeric_cast #3\n"; caught_exception = true; }
BOOST_CHECK ( caught_exception );
caught_exception = false;
try { ul = numeric_cast<unsigned long>( small_negative_value ); }
catch (bad_numeric_cast)
{ cout<<"caught bad_numeric_cast #4\n"; caught_exception = true; }
BOOST_CHECK ( caught_exception );
caught_exception = false;
try { numeric_cast<int>( DBL_MAX ); }
catch (bad_numeric_cast)
{ cout<<"caught bad_numeric_cast #5\n"; caught_exception = true; }
BOOST_CHECK ( caught_exception );
return 0 ;
}
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@@ -1,29 +0,0 @@
#==============================================================================
# Copyright Antony Polukhin, 2012-2026.
#
# Distributed under the Boost Software License, Version 1.0. (See accompanying
# file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#==============================================================================
# performance tests
import testing ;
import path ;
path-constant TEST_DIR : . ;
project performance/test
: source-location ./
: requirements
# <library>/boost/chrono//boost_chrono
# <library>/boost/system//boost_system
<link>static
<target-os>freebsd:<linkflags>"-lrt"
<target-os>linux:<linkflags>"-lrt"
<toolset>gcc:<cxxflags>-fvisibility=hidden
<toolset>intel-linux:<cxxflags>-fvisibility=hidden
<toolset>sun:<cxxflags>-xldscope=hidden
: default-build release
;
run performance_test.cpp : $(TEST_DIR) ;
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@@ -1,393 +0,0 @@
// (C) Copyright Antony Polukhin, 2012-2026.
// Use, modification and distribution are subject to the
// Boost Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// See http://www.boost.org/libs/config for most recent version.
//
// Testing lexical_cast<> performance
//
#define BOOST_ERROR_CODE_HEADER_ONLY
#define BOOST_CHRONO_HEADER_ONLY
#include <boost/lexical_cast.hpp>
#include <fstream>
#include <cstring>
#include <string_view>
#include <type_traits>
#include <boost/array.hpp>
#include <boost/chrono.hpp>
#include <boost/container/string.hpp>
#include <boost/range/iterator_range.hpp>
// File to output data
std::fstream fout;
namespace boost {
inline std::istream& operator>> (std::istream& in, boost::array<char,50>& res) {
in >> res.begin();
return in;
}
}
template <class OutT, class InT>
static inline void test_lexical(const InT& in_val) {
OutT out_val = boost::lexical_cast<OutT>(in_val);
(void)out_val;
}
template <class OutT, class InT>
static inline void test_ss_constr(const InT& in_val) {
OutT out_val;
std::stringstream ss;
ss << in_val;
if (ss.fail()) throw std::logic_error("descr");
ss >> out_val;
if (ss.fail()) throw std::logic_error("descr");
}
template <class OutT, class CharT, std::size_t N>
static inline void test_ss_constr(const boost::array<CharT, N>& in_val) {
OutT out_val;
std::stringstream ss;
ss << in_val.begin();
if (ss.fail()) throw std::logic_error("descr");
ss >> out_val;
if (ss.fail()) throw std::logic_error("descr");
}
template <class OutT, class StringStreamT, class CharT, std::size_t N>
static inline void test_ss_noconstr(StringStreamT& ss, const boost::array<CharT, N>& in_val) {
OutT out_val;
ss << in_val.begin(); // ss is an instance of std::stringstream
if (ss.fail()) throw std::logic_error("descr");
ss >> out_val;
if (ss.fail()) throw std::logic_error("descr");
/* reseting std::stringstream to use it again */
ss.str(std::string());
ss.clear();
}
template <class OutT, class StringStreamT, class InT>
static inline void test_ss_noconstr(StringStreamT& ss, const InT& in_val) {
OutT out_val;
ss << in_val; // ss is an instance of std::stringstream
if (ss.fail()) throw std::logic_error("descr");
ss >> out_val;
if (ss.fail()) throw std::logic_error("descr");
/* reseting std::stringstream to use it again */
ss.str(std::string());
ss.clear();
}
struct structure_sprintf {
template <class OutT, class BufferT, class InT>
static inline void test(BufferT* buffer, const InT& in_val, const char* const conv) {
sprintf(buffer, conv, in_val);
OutT out_val(buffer);
}
template <class OutT, class BufferT>
static inline void test(BufferT* buffer, const std::string& in_val, const char* const conv) {
sprintf(buffer, conv, in_val.c_str());
OutT out_val(buffer);
}
template <class OutT, class BufferT>
static inline void test(BufferT* buffer, std::string_view in_val, const char* const conv) {
sprintf(buffer, conv, in_val.data()); // in_val is zero terminated in this program
OutT out_val(buffer);
}
};
struct structure_sscanf {
template <class OutT, class BufferT, class CharT, std::size_t N>
static inline void test(BufferT* /*buffer*/, const boost::array<CharT, N>& in_val, const char* const conv) {
OutT out_val;
sscanf(in_val.cbegin(), conv, &out_val);
}
template <class OutT, class BufferT, class InT>
static inline void test(BufferT* /*buffer*/, const InT& in_val, const char* const conv) {
OutT out_val;
sscanf(reinterpret_cast<const char*>(in_val), conv, &out_val);
}
template <class OutT, class BufferT>
static inline void test(BufferT* /*buffer*/, const std::string& in_val, const char* const conv) {
OutT out_val;
sscanf(in_val.c_str(), conv, &out_val);
}
template <class OutT, class BufferT>
static inline void test(BufferT* /*buffer*/, const boost::iterator_range<const char*>& in_val, const char* const conv) {
OutT out_val;
sscanf(in_val.begin(), conv, &out_val);
}
template <class OutT, class BufferT>
static inline void test(BufferT* /*buffer*/, std::string_view in_val, const char* const conv) {
OutT out_val;
sscanf(in_val.data(), conv, &out_val); // in_val is zero terminated in this program
}
};
struct structure_fake {
template <class OutT, class BufferT, class InT>
static inline void test(BufferT* /*buffer*/, const InT& /*in_val*/, const char* const /*conv*/) {}
};
static const int fake_test_value = 9999;
template <class T>
static inline void min_fancy_output(T v1, T v2, T v3, T v4) {
const char beg_mark[] = "!!! *";
const char end_mark[] = "* !!!";
const char no_mark[] = "";
unsigned int res = 4;
if (v1 < v2 && v1 < v3 && v1 < v4) res = 1;
if (v2 < v1 && v2 < v3 && v2 < v4) res = 2;
if (v3 < v1 && v3 < v2 && v3 < v4) res = 3;
fout << "[ "
<< (res == 1 ? beg_mark : no_mark)
;
if (v1) fout << v1;
else fout << "<1";
fout << (res == 1 ? end_mark : no_mark)
<< " ][ "
<< (res == 2 ? beg_mark : no_mark)
;
if (v2) fout << v2;
else fout << "<1";
fout << (res == 2 ? end_mark : no_mark)
<< " ][ "
<< (res == 3 ? beg_mark : no_mark)
;
if (v3) fout << v3;
else fout << "<1";
fout << (res == 3 ? end_mark : no_mark)
<< " ][ "
<< (res == 4 ? beg_mark : no_mark)
;
if (!v4) fout << "<1";
else if (v4 == fake_test_value) fout << "---";
else fout << v4;
fout
<< (res == 4 ? end_mark : no_mark)
<< " ]";
}
template <unsigned int IetartionsCountV, class ToT, class SprintfT, class FromT>
static inline void perf_test_impl(const FromT& in_val, const char* const conv) {
typedef boost::chrono::steady_clock test_clock;
test_clock::time_point start;
typedef boost::chrono::milliseconds duration_t;
duration_t lexical_cast_time, ss_constr_time, ss_noconstr_time, printf_time;
start = test_clock::now();
for (unsigned int i = 0; i < IetartionsCountV; ++i) {
test_lexical<ToT>(in_val);
test_lexical<ToT>(in_val);
test_lexical<ToT>(in_val);
test_lexical<ToT>(in_val);
}
lexical_cast_time = boost::chrono::duration_cast<duration_t>(test_clock::now() - start);
start = test_clock::now();
for (unsigned int i = 0; i < IetartionsCountV; ++i) {
test_ss_constr<ToT>(in_val);
test_ss_constr<ToT>(in_val);
test_ss_constr<ToT>(in_val);
test_ss_constr<ToT>(in_val);
}
ss_constr_time = boost::chrono::duration_cast<duration_t>(test_clock::now() - start);
std::stringstream ss;
start = test_clock::now();
for (unsigned int i = 0; i < IetartionsCountV; ++i) {
test_ss_noconstr<ToT>(ss, in_val);
test_ss_noconstr<ToT>(ss, in_val);
test_ss_noconstr<ToT>(ss, in_val);
test_ss_noconstr<ToT>(ss, in_val);
}
ss_noconstr_time = boost::chrono::duration_cast<duration_t>(test_clock::now() - start);
char buffer[128];
start = test_clock::now();
for (unsigned int i = 0; i < IetartionsCountV; ++i) {
SprintfT::template test<ToT>(buffer, in_val, conv);
SprintfT::template test<ToT>(buffer, in_val, conv);
SprintfT::template test<ToT>(buffer, in_val, conv);
SprintfT::template test<ToT>(buffer, in_val, conv);
}
printf_time = boost::chrono::duration_cast<duration_t>(test_clock::now() - start);
min_fancy_output(
lexical_cast_time.count(),
ss_constr_time.count(),
ss_noconstr_time.count(),
std::is_same<SprintfT, structure_fake>::value ? fake_test_value : printf_time.count()
);
}
template <class ToT, class SprintfT, class FromT>
static inline void perf_test(const std::string& test_name, const FromT& in_val, const char* const conv) {
const unsigned int ITERATIONSCOUNT = 100000;
fout << " [[ " << test_name << " ]";
perf_test_impl<ITERATIONSCOUNT/4, ToT, SprintfT>(in_val, conv);
fout << "]\n";
}
template <class ConverterT>
void string_like_test_set(const std::string& from) {
typedef structure_sscanf ssc_t;
ConverterT conv;
perf_test<char, ssc_t>(from + "->char", conv("c"), "%c");
perf_test<signed char, ssc_t>(from + "->signed char", conv("c"), "%hhd");
perf_test<unsigned char, ssc_t>(from + "->unsigned char", conv("c"), "%hhu");
perf_test<int, ssc_t>(from + "->int", conv("100"), "%d");
perf_test<short, ssc_t>(from + "->short", conv("100"), "%hd");
perf_test<long int, ssc_t>(from + "->long int", conv("100"), "%ld");
perf_test<boost::long_long_type, ssc_t>(from + "->long long", conv("100"), "%lld");
perf_test<unsigned int, ssc_t>(from + "->unsigned int", conv("100"), "%u");
perf_test<unsigned short, ssc_t>(from + "->unsigned short", conv("100"), "%hu");
perf_test<unsigned long int, ssc_t>(from + "->unsigned long int", conv("100"), "%lu");
perf_test<boost::ulong_long_type, ssc_t>(from + "->unsigned long long", conv("100"), "%llu");
// perf_test<bool, ssc_t>(from + "->bool", conv("1"), "%");
perf_test<float, ssc_t>(from + "->float", conv("1.123"), "%f");
perf_test<double, ssc_t>(from + "->double", conv("1.123"), "%lf");
perf_test<long double, ssc_t>(from + "->long double", conv("1.123"), "%Lf");
perf_test<boost::array<char, 50>, ssc_t>(from + "->array<char, 50>", conv("1.123"), "%s");
perf_test<std::string, structure_fake>(from + "->string", conv("string"), "%Lf");
perf_test<boost::container::string, structure_fake>(from + "->container::string"
, conv("string"), "%Lf");
}
struct to_string_conv {
std::string operator()(const char* const c) const {
return c;
}
};
struct to_char_conv {
const char* operator()(const char* const c) const {
return c;
}
};
struct to_uchar_conv {
const unsigned char* operator()(const char* const c) const {
return reinterpret_cast<const unsigned char*>(c);
}
};
struct to_schar_conv {
const signed char* operator()(const char* const c) const {
return reinterpret_cast<const signed char*>(c);
}
};
struct to_iterator_range {
boost::iterator_range<const char*> operator()(const char* const c) const {
return boost::make_iterator_range(c, c + std::strlen(c));
}
};
struct to_array_50 {
boost::array<char, 50> operator()(const char* const c) const {
boost::array<char, 50> ret;
std::strcpy(ret.begin(), c);
return ret;
}
};
struct to_string_view {
std::string_view operator()(const char* const c) const {
return std::string_view{c};
}
};
int main(int argc, char** argv) {
BOOST_ASSERT(argc >= 2);
std::string output_path(argv[1]);
output_path += "/results.txt";
fout.open(output_path.c_str(), std::fstream::in | std::fstream::out | std::fstream::app);
BOOST_ASSERT(fout);
fout << "[section " << BOOST_COMPILER << "]\n"
<< "[table:id Performance Table ( "<< BOOST_COMPILER << ")\n"
<< "[[From->To] [lexical_cast] [std::stringstream with construction] "
<< "[std::stringstream without construction][scanf/printf]]\n";
// From std::string to ...
string_like_test_set<to_string_conv>("string");
// From ... to std::string
perf_test<std::string, structure_sprintf>("string->char", 'c', "%c");
perf_test<std::string, structure_sprintf>("string->signed char", static_cast<signed char>('c'), "%hhd");
perf_test<std::string, structure_sprintf>("string->unsigned char", static_cast<unsigned char>('c'), "%hhu");
perf_test<std::string, structure_sprintf>("int->string", 100, "%d");
perf_test<std::string, structure_sprintf>("short->string", static_cast<short>(100), "%hd");
perf_test<std::string, structure_sprintf>("long int->string", 100l, "%ld");
perf_test<std::string, structure_sprintf>("long long->string", 100ll, "%lld");
perf_test<std::string, structure_sprintf>("unsigned int->string", static_cast<unsigned short>(100u), "%u");
perf_test<std::string, structure_sprintf>("unsigned short->string", 100u, "%hu");
perf_test<std::string, structure_sprintf>("unsigned long int->string", 100ul, "%lu");
perf_test<std::string, structure_sprintf>("unsigned long long->string", static_cast<boost::ulong_long_type>(100), "%llu");
// perf_test<bool, structure_sscanf>("bool->string", std::string("1"), "%");
perf_test<std::string, structure_sprintf>("float->string", 1.123f, "%f");
perf_test<std::string, structure_sprintf>("double->string", 1.123, "%lf");
perf_test<std::string, structure_sprintf>("long double->string", 1.123L, "%Lf");
string_like_test_set<to_char_conv>("char*");
string_like_test_set<to_uchar_conv>("unsigned char*");
string_like_test_set<to_schar_conv>("signed char*");
string_like_test_set<to_iterator_range>("iterator_range<char*>");
string_like_test_set<to_string_view>("std::string_view");
string_like_test_set<to_array_50>("array<char, 50>");
perf_test<int, structure_fake>("int->int", 100, "");
perf_test<double, structure_fake>("float->double", 100.0f, "");
perf_test<signed char, structure_fake>("char->signed char", 'c', "");
fout << "]\n"
<< "[endsect]\n\n";
return 0;
}
+308
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@@ -0,0 +1,308 @@
// what: simple unit test framework
// who: developed by Kevlin Henney
// when: November 2000
// where: tested with BCC 5.5, MSVC 6.0, and g++ 2.91
//
// ChangeLog:
// 20 Jan 2001 - Fixed a warning for MSVC (Dave Abrahams)
#ifndef TEST_INCLUDED
#define TEST_INCLUDED
#include <exception>
#include <iostream>
#include <strstream> // for out-of-the-box g++
#include <string>
namespace test // test tuple comprises name and nullary function (object)
{
template<typename string_type, typename function_type>
struct test
{
string_type name;
function_type action;
static test make(string_type name, function_type action)
{
test result; // MSVC aggreggate initializer bugs
result.name = name;
result.action = action;
return result;
}
};
}
namespace test // failure exception used to indicate checked test failures
{
class failure : public std::exception
{
public: // struction (default cases are OK)
failure(const std::string & why)
: reason(why)
{
}
// std::~string has no exception-specification (could throw anything),
// but we need to be compatible with std::~exception's empty one
// see std::15.4p13 and std::15.4p3
~failure() throw()
{
}
public: // usage
virtual const char * what() const throw()
{
return reason.c_str();
}
private: // representation
std::string reason;
};
}
namespace test // not_implemented exception used to mark unimplemented tests
{
class not_implemented : public std::exception
{
public: // usage (default ctor and dtor are OK)
virtual const char * what() const throw()
{
return "not implemented";
}
};
}
namespace test // test utilities
{
inline void check(bool condition, const std::string & description)
{
if(!condition)
{
throw failure(description);
}
}
inline void check_true(bool value, const std::string & description)
{
check(value, "expected true: " + description);
}
inline void check_false(bool value, const std::string & description)
{
check(!value, "expected false: " + description);
}
template<typename lhs_type, typename rhs_type>
void check_equal(
const lhs_type & lhs, const rhs_type & rhs,
const std::string & description)
{
check(lhs == rhs, "expected equal values: " + description);
}
template<typename lhs_type, typename rhs_type>
void check_unequal(
const lhs_type & lhs, const rhs_type & rhs,
const std::string & description)
{
check(lhs != rhs, "expected unequal values: " + description);
}
inline void check_null(const void* ptr, const std::string & description)
{
check(!ptr, "expected null pointer: " + description);
}
inline void check_non_null(const void* ptr, const std::string & description)
{
check(ptr != 0, "expected non-null pointer: " + description);
}
}
#define TEST_CHECK_THROW(expression, exception, description) \
try \
{ \
expression; \
throw ::test::failure(description); \
} \
catch(exception &) \
{ \
}
namespace test // memory tracking (enabled if test new and delete linked in)
{
class allocations
{
public: // singleton access
static allocations & instance()
{
static allocations singleton;
return singleton;
}
public: // logging
void clear()
{
alloc_count = dealloc_count = 0;
}
void allocation()
{
++alloc_count;
}
void deallocation()
{
++dealloc_count;
}
public: // reporting
unsigned long allocated() const
{
return alloc_count;
}
unsigned long deallocated() const
{
return dealloc_count;
}
bool balanced() const
{
return alloc_count == dealloc_count;
}
private: // structors (default dtor is fine)
allocations()
: alloc_count(0), dealloc_count(0)
{
}
private: // prevention
allocations(const allocations &);
allocations & operator=(const allocations &);
private: // state
unsigned long alloc_count, dealloc_count;
};
}
namespace test // tester is the driver class for a sequence of tests
{
template<typename test_iterator>
class tester
{
public: // structors (default destructor is OK)
tester(test_iterator first_test, test_iterator after_last_test)
: begin(first_test), end(after_last_test)
{
}
public: // usage
bool operator()(); // returns true if all tests passed
private: // representation
test_iterator begin, end;
private: // prevention
tester(const tester &);
tester &operator=(const tester &);
};
template<typename test_iterator>
bool tester<test_iterator>::operator()()
{
using namespace std;
unsigned long passed = 0, failed = 0, unimplemented = 0;
for(test_iterator current = begin; current != end; ++current)
{
cerr << "[" << current->name << "] " << flush;
string result = "passed"; // optimistic
try
{
allocations::instance().clear();
current->action();
if(!allocations::instance().balanced())
{
unsigned long allocated = allocations::instance().allocated();
unsigned long deallocated = allocations::instance().deallocated();
ostrstream report;
report << "new/delete ("
<< allocated << " allocated, "
<< deallocated << " deallocated)"
<< ends;
const char * text = report.str();
report.freeze(false);
throw failure(text);
}
++passed;
}
catch(const failure & caught)
{
(result = "failed: ") += caught.what();
++failed;
}
catch(const not_implemented &)
{
result = "not implemented";
++unimplemented;
}
catch(const exception & caught)
{
(result = "exception: ") += caught.what();
++failed;
}
catch(...)
{
result = "failed with unknown exception";
++failed;
}
cerr << result << endl;
}
cerr << passed + failed << " tests: "
<< passed << " passed, "
<< failed << " failed";
if(unimplemented)
{
cerr << " (" << unimplemented << " not implemented)";
}
cerr << endl;
return failed == 0;
}
}
#endif
// Copyright Kevlin Henney, 2000. All rights reserved.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
-84
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@@ -1,84 +0,0 @@
# Copyright Antony Polukhin, 2021-2026.
#
# Distributed under the Boost Software License, Version 1.0.
# See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt
if(NOT TARGET tests)
add_custom_target(tests)
endif()
function(boost_lexical_cast_add_test_impl test_name test_file libs)
add_executable(${test_name} ${test_file})
target_link_libraries(${test_name} PRIVATE ${libs})
add_test(NAME ${test_name} COMMAND ${test_name})
add_dependencies(tests ${test_name})
endfunction()
function(boost_lexical_cast_add_test name libs)
set(test_name lexical_cast_${name})
set(test_file ${name}.cpp)
boost_lexical_cast_add_test_impl(${test_name} ${test_file} "Boost::lexical_cast;${libs}")
endfunction()
boost_lexical_cast_add_test(lexical_cast_test Boost::type_traits)
boost_lexical_cast_add_test(loopback_test "")
boost_lexical_cast_add_test(abstract_test "")
boost_lexical_cast_add_test(noncopyable_test "")
boost_lexical_cast_add_test(vc8_bug_test "")
boost_lexical_cast_add_test(implicit_convert "")
boost_lexical_cast_add_test(wchars_test "")
boost_lexical_cast_add_test(float_types_test "")
if(NOT MSVC)
# Make sure that LexicalCast works the same way as some of the C++ Standard Libraries
boost_lexical_cast_add_test_impl(lexical_cast_float_types_non_opt float_types_test.cpp Boost::lexical_cast)
target_compile_definitions(lexical_cast_float_types_non_opt PRIVATE BOOST_LEXICAL_CAST_DETAIL_TEST_ON_OLD)
endif()
boost_lexical_cast_add_test(inf_nan_test "")
boost_lexical_cast_add_test(containers_test "")
boost_lexical_cast_add_test(empty_input_test Boost::range)
boost_lexical_cast_add_test(pointers_test "")
if(MSVC)
add_executable(lexical_cast_typedefed_wchar_test_compile typedefed_wchar_test.cpp)
target_compile_options(lexical_cast_typedefed_wchar_test_compile PRIVATE "/Zc:wchar_t-")
boost_lexical_cast_add_test(typedefed_wchar_test_runtime "")
target_compile_options(lexical_cast_typedefed_wchar_test_runtime PRIVATE "/Zc:wchar_t-")
endif()
boost_lexical_cast_add_test(no_locale_test Boost::range)
target_compile_definitions(lexical_cast_no_locale_test
PRIVATE
BOOST_NO_STD_LOCALE
BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
)
boost_lexical_cast_add_test_impl(lexical_cast_no_exceptions_test no_exceptions_test.cpp "Boost::container;Boost::range")
target_include_directories(lexical_cast_no_exceptions_test PRIVATE ../include)
target_compile_definitions(lexical_cast_no_exceptions_test
PRIVATE
_HAS_EXCEPTIONS=0 # MSVC stdlib
_STLP_NO_EXCEPTIONS # STLPort
)
if(MSVC)
target_compile_definitions(lexical_cast_no_exceptions_test PRIVATE BOOST_NO_EXCEPTIONS)
endif()
target_compile_options(lexical_cast_no_exceptions_test PRIVATE "-fno-exceptions")
boost_lexical_cast_add_test(iterator_range_test Boost::range)
boost_lexical_cast_add_test(string_view_test Boost::utility)
boost_lexical_cast_add_test(arrays_test Boost::array)
boost_lexical_cast_add_test(integral_types_test Boost::type_traits)
boost_lexical_cast_add_test(stream_detection_test "")
boost_lexical_cast_add_test(stream_traits_test "Boost::array;Boost::range;Boost::utility")
boost_lexical_cast_add_test(filesystem_test Boost::filesystem)
boost_lexical_cast_add_test(try_lexical_convert "")
file(GLOB EXAMPLE_FILES "../example/*.cpp")
foreach (testsourcefile ${EXAMPLE_FILES})
get_filename_component(testname ${testsourcefile} NAME_WE)
boost_lexical_cast_add_test_impl(lexical_cast_example_${testname} ${testsourcefile} "Boost::variant;Boost::date_time")
endforeach()
+34
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@@ -0,0 +1,34 @@
# Signals library
# Copyright (C) 2001-2003 Douglas Gregor
# Permission to copy, use, sell and distribute this software is granted
# provided this copyright notice appears in all copies. Permission to modify
# the code and to distribute modified code is granted provided this copyright
# notice appears in all copies, and a notice that the code was modified is
# included with the copyright notice. This software is provided "as is"
# without express or implied warranty, and with no claim as to its suitability
# for any purpose.
# For more information, see http://www.boost.org/
# Testing Jamfile autogenerated from XML source
subproject libs/conversion/test ;
# bring in rules for testing
import testing ;
# Make tests run by default.
DEPENDS all : test ;
{
test-suite conversion
: [ run implicit_cast.cpp ]
[ compile-fail implicit_cast_fail.cpp ]
[ run ../cast_test.cpp ]
[ run ../numeric_cast_test.cpp ]
[ run ../lexical_cast_test.cpp ]
;
}
+18 -86
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@@ -1,93 +1,25 @@
# Signals library
# Copyright (C) 2001-2003 Douglas Gregor
# Copyright Antony Polukhin, 2011-2026.
#
# Distributed under the Boost Software License, Version 1.0. (See accompanying
# file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#
require-b2 5.0.1 ;
import-search /boost/config/checks ;
import config : requires ;
# Permission to copy, use, sell and distribute this software is granted
# provided this copyright notice appears in all copies. Permission to modify
# the code and to distribute modified code is granted provided this copyright
# notice appears in all copies, and a notice that the code was modified is
# included with the copyright notice. This software is provided "as is"
# without express or implied warranty, and with no claim as to its suitability
# for any purpose.
# For more information, see http://www.boost.org/
# bring in rules for testing
import testing ;
import feature ;
project
: requirements
<library>/boost/lexical_cast//boost_lexical_cast
[ requires cxx11_rvalue_references cxx11_static_assert cxx11_template_aliases ]
<link>static
<toolset>gcc-4.7:<cxxflags>-ftrapv
<toolset>gcc-4.6:<cxxflags>-ftrapv
<toolset>clang:<cxxflags>-ftrapv
# default to all warnings on:
<warnings>all
# set warnings as errors for those compilers we know we get warning free:
<toolset>gcc:<cxxflags>-Wextra
# Not a lexical_cast related warning: boost/preprocessor/variadic/elem.hpp:29:46: warning: variadic macros are a C99 feature
<toolset>clang:<cxxflags>-Wno-variadic-macros
<toolset>gcc:<cxxflags>-Wno-variadic-macros
# Not a lexical_cast related warning: boost/mpl/aux_/preprocessed/gcc/greater_equal.hpp:78:1: warning: empty macro arguments are a C99 feature [-Wc99-extensions]
# boost/mpl/iter_fold.hpp:45:1: warning: empty macro arguments are a C99 feature [-Wc99-extensions]
<toolset>clang:<cxxflags>-Wno-c99-extensions
<library>/boost/array//boost_array
<library>/boost/range//boost_range
<library>/boost/utility//boost_utility
;
# Thanks to Steven Watanabe for helping with <nowchar> feature
feature.feature nowchar : on :
composite optional propagated link-incompatible ;
feature.compose <nowchar>on : <cxxflags>"/Zc:wchar_t-" ;
test-suite conversion
: [ run lexical_cast_test.cpp ]
[ run loopback_test.cpp ]
[ run abstract_test.cpp ]
[ run noncopyable_test.cpp ]
[ run vc8_bug_test.cpp ]
[ run implicit_convert.cpp ]
[ run wchars_test.cpp ]
[ run float_types_test.cpp ]
# Make sure that LexicalCast works the same way as some of the C++ Standard Libraries
[ run float_types_test.cpp : : : <define>BOOST_LEXICAL_CAST_DETAIL_TEST_ON_OLD
<toolset>msvc:<build>no # could have outdated behavior in some border cases
<target-os>darwin:<build>no # may have outdated behavior in some border cases
: float_types_non_opt
]
[ run inf_nan_test.cpp ]
[ run containers_test.cpp : : : <toolset>gcc:<cxxflags>-Wno-long-long <toolset>clang:<cxxflags>-Wno-long-long ]
[ run empty_input_test.cpp ]
[ run pointers_test.cpp ]
[ compile typedefed_wchar_test.cpp : <toolset>msvc:<nowchar>on <library>/boost/date_time//boost_date_time ]
[ run typedefed_wchar_test_runtime.cpp : : : <toolset>msvc:<nowchar>on <toolset>msvc,<stdlib>stlport:<build>no ]
[ run no_locale_test.cpp : : : <define>BOOST_NO_STD_LOCALE <define>BOOST_LEXICAL_CAST_ASSUME_C_LOCALE ]
[ run no_exceptions_test.cpp : : : <exception-handling>off
<define>_HAS_EXCEPTIONS=0 # MSVC stdlib
<define>_STLP_NO_EXCEPTIONS # STLPort
]
[ run iterator_range_test.cpp ]
[ run string_view_test.cpp ]
[ run arrays_test.cpp : : :
<toolset>msvc:<cxxflags>/wd4512 # assignment operator could not be generated
]
[ run integral_types_test.cpp ]
[ run stream_detection_test.cpp ]
[ run stream_traits_test.cpp ]
[ compile-fail to_pointer_test.cpp ]
[ compile-fail from_volatile.cpp ]
[ run filesystem_test.cpp /boost/filesystem//boost_filesystem : : : <toolset>gcc,<target-os>windows:<build>no ] # Boost.Atomic no longer supports MinGW
[ run try_lexical_convert.cpp ]
: [ run implicit_cast.cpp ]
[ compile-fail implicit_cast_fail.cpp ]
[ run ../cast_test.cpp ]
[ run ../lexical_cast_test.cpp ]
;
# Assuring that examples compile and run. Adding sources from `example` directory to the `conversion` test suite.
for local p in [ glob ../example/*.cpp ]
{
conversion += [ run $(p) : : : <library>/boost/variant//boost_variant <library>/boost/date_time//boost_date_time ] ;
}
-49
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@@ -1,49 +0,0 @@
// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Sergey Shandar 2005, Alexander Nasonov, 2007.
// Copyright Antony Polukhin, 2023-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
//
// Test abstract class. Bug 1358600:
// http://sf.net/tracker/?func=detail&aid=1358600&group_id=7586&atid=107586
#include <boost/core/lightweight_test.hpp>
#include <boost/lexical_cast.hpp>
class A
{
public:
virtual void out(std::ostream &) const = 0;
virtual ~A() {}
};
class B: public A
{
public:
virtual void out(std::ostream &O) const { O << "B"; }
};
std::ostream &operator<<(std::ostream &O, const A &a)
{
a.out(O);
return O;
}
void test_abstract()
{
const A &a = B();
BOOST_TEST(boost::lexical_cast<std::string>(a) == "B");
}
int main()
{
test_abstract();
return boost::report_errors();
}
-100
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@@ -1,100 +0,0 @@
# Use, modification, and distribution are
# subject to the Boost Software License, Version 1.0. (See accompanying
# file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#
# Copyright Antony Polukhin, 2016-2026.
#
# See https://svn.boost.org/trac/boost/wiki/TravisCoverals for description of this file
# and how it can be used with Boost libraries.
#
# File revision #6
init:
# boost-local/libs/ folder to put this library into. This may be useful, if you're for example running Travis
# from `Boost.DLL` repo while Boost already has `dll` and with to replace `dll` with content of`Boost.DLL`.
#
# Otherwise just leave the default value - set BOOST_LIBS_FOLDER=%APPVEYOR_PROJECT_NAME%
- set BOOST_LIBS_FOLDER=%APPVEYOR_PROJECT_NAME%
###############################################################################################################
# From this point and below code is same for all the Boost libs
###############################################################################################################
version: 1.74.{build}-{branch}
# branches to build
branches:
except:
- gh-pages
skip_tags: true
environment:
matrix:
# - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
# TOOLSET: msvc # TODO: clang-win ???
# ADDRMD: 32,64
# CXXSTD: 17,latest
- APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
TOOLSET: msvc # clang-win has problems with structured bindings - it can not correclty use std::tuple_size
ADDRMD: 32,64
CXXSTD: 17,latest
- APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
TOOLSET: msvc # clang-win has problems with structured bindings - it can not correclty use std::tuple_size
ADDRMD: 32,64
CXXSTD: 17,latest
CXXFLAGS: /permissive-
- APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
TOOLSET: msvc # clang-win has problems with structured bindings - it can not correclty use std::tuple_size
ADDRMD: 32,64
- APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
ADDPATH: C:\cygwin\bin;
TOOLSET: gcc
CXXSTD: 14,1z
- APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
ADDPATH: C:\cygwin64\bin;
TOOLSET: gcc
CXXSTD: 14,1z
# - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
# ADDPATH: C:\mingw\bin;
# TOOLSET: gcc
# CXXSTD: 14,1z
- APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
ADDPATH: C:\mingw-w64\x86_64-7.2.0-posix-seh-rt_v5-rev1\mingw64\bin;
TOOLSET: gcc
CXXSTD: 14,1z
before_build:
- set BOOST_BRANCH=develop
- if "%APPVEYOR_REPO_BRANCH%" == "master" set BOOST_BRANCH=master
- echo "Testing %BOOST_LIBS_FOLDER%"
# Cloning Boost libraries (fast nondeep cloning)
- set BOOST=C:/boost-local
- git clone -b %BOOST_BRANCH% --depth 10 https://github.com/boostorg/boost.git %BOOST%
- cd %BOOST%
- git submodule update --init --depth 10 tools/build tools/boostdep
- echo "rm -rf %BOOST%/libs/%BOOST_LIBS_FOLDER%"
- rm -rf %BOOST%/libs/%BOOST_LIBS_FOLDER%
- mv %APPVEYOR_BUILD_FOLDER% %BOOST%/libs/%BOOST_LIBS_FOLDER%
- python tools/boostdep/depinst/depinst.py --git_args "--depth 10 --jobs 2" -I example -I examples %BOOST_LIBS_FOLDER%
build_script:
- cmd /c bootstrap
- b2.exe headers
- cd %BOOST%/libs/%BOOST_LIBS_FOLDER%/test
after_build:
before_test:
test_script:
- PATH=%ADDPATH%%PATH%
- if not "%CXXSTD%" == "" set CXXSTD=cxxstd=%CXXSTD%
- if not "%ADDRMD%" == "" set ADDRMD=address-model=%ADDRMD%
- echo "Running command ..\..\..\b2 -j3 toolset=%TOOLSET% %CXXSTD% %ADDRMD% variant=debug,release"
- ..\..\..\b2.exe -j3 toolset=%TOOLSET% %CXXSTD% %ADDRMD% variant=debug,release cxxflags="-DBOOST_TRAVISCI_BUILD %CXXFLAGS%"
after_test:
on_success:
on_failure:
on_finish:
-373
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@@ -1,373 +0,0 @@
// Testing boost::lexical_cast with boost::container::string.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Antony Polukhin, 2012-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <boost/core/lightweight_test.hpp>
#include <boost/array.hpp>
#include <boost/lexical_cast.hpp>
using namespace boost;
#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && !defined(_LIBCPP_VERSION) && !defined(BOOST_MSVC)
#define BOOST_LC_RUNU16
#endif
#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && !defined(_LIBCPP_VERSION) && !defined(BOOST_MSVC)
#define BOOST_LC_RUNU32
#endif
template <template <class, std::size_t> class ArrayT, class T>
static void testing_template_array_output_on_spec_value(T val)
{
typedef ArrayT<char, 300> arr_type;
typedef ArrayT<char, 1> short_arr_type;
typedef ArrayT<unsigned char, 300> uarr_type;
typedef ArrayT<unsigned char, 1> ushort_arr_type;
typedef ArrayT<signed char, 4> sarr_type;
typedef ArrayT<signed char, 3> sshort_arr_type;
std::string ethalon("100");
using namespace std;
{
arr_type res1 = lexical_cast<arr_type>(val);
BOOST_TEST_EQ(&res1[0], ethalon);
const arr_type res2 = lexical_cast<arr_type>(val);
BOOST_TEST_EQ(&res2[0], ethalon);
BOOST_TEST_THROWS(lexical_cast<short_arr_type>(val), boost::bad_lexical_cast);
}
{
uarr_type res1 = lexical_cast<uarr_type>(val);
BOOST_TEST_EQ(reinterpret_cast<char*>(&res1[0]), ethalon);
const uarr_type res2 = lexical_cast<uarr_type>(val);
BOOST_TEST_EQ(reinterpret_cast<const char*>(&res2[0]), ethalon);
BOOST_TEST_THROWS(lexical_cast<ushort_arr_type>(val), boost::bad_lexical_cast);
}
{
sarr_type res1 = lexical_cast<sarr_type>(val);
BOOST_TEST_EQ(reinterpret_cast<char*>(&res1[0]), ethalon);
const sarr_type res2 = lexical_cast<sarr_type>(val);
BOOST_TEST_EQ(reinterpret_cast<const char*>(&res2[0]), ethalon);
BOOST_TEST_THROWS(lexical_cast<sshort_arr_type>(val), boost::bad_lexical_cast);
}
#if !defined(BOOST_NO_STRINGSTREAM) && !defined(BOOST_NO_STD_WSTRING) && !defined(_LIBCPP_VERSION)
typedef ArrayT<wchar_t, 300> warr_type;
typedef ArrayT<wchar_t, 3> wshort_arr_type;
std::wstring wethalon(L"100");
{
warr_type res = lexical_cast<warr_type>(val);
BOOST_TEST(&res[0] == wethalon);
}
{
const warr_type res = lexical_cast<warr_type>(val);
BOOST_TEST(&res[0] == wethalon);
}
BOOST_TEST_THROWS(lexical_cast<wshort_arr_type>(val), boost::bad_lexical_cast);
#endif
#ifdef BOOST_LC_RUNU16
typedef ArrayT<char16_t, 300> u16arr_type;
typedef ArrayT<char16_t, 3> u16short_arr_type;
std::u16string u16ethalon(u"100");
{
u16arr_type res = lexical_cast<u16arr_type>(val);
BOOST_TEST(&res[0] == u16ethalon);
}
{
const u16arr_type res = lexical_cast<u16arr_type>(val);
BOOST_TEST(&res[0] == u16ethalon);
}
BOOST_TEST_THROWS(lexical_cast<u16short_arr_type>(val), boost::bad_lexical_cast);
#endif
#ifdef BOOST_LC_RUNU32
typedef ArrayT<char32_t, 300> u32arr_type;
typedef ArrayT<char32_t, 3> u32short_arr_type;
std::u32string u32ethalon(U"100");
{
u32arr_type res = lexical_cast<u32arr_type>(val);
BOOST_TEST(&res[0] == u32ethalon);
}
{
const u32arr_type res = lexical_cast<u32arr_type>(val);
BOOST_TEST(&res[0] == u32ethalon);
}
BOOST_TEST_THROWS(lexical_cast<u32short_arr_type>(val), boost::bad_lexical_cast);
#endif
}
template <template <class, std::size_t> class ArrayT>
static void testing_template_array_output_on_char_value()
{
typedef ArrayT<char, 300> arr_type;
typedef ArrayT<char, 1> short_arr_type;
typedef ArrayT<unsigned char, 300> uarr_type;
typedef ArrayT<unsigned char, 1> ushort_arr_type;
typedef ArrayT<signed char, 4> sarr_type;
typedef ArrayT<signed char, 3> sshort_arr_type;
const char val[] = "100";
std::string ethalon("100");
using namespace std;
{
arr_type res1 = lexical_cast<arr_type>(val);
BOOST_TEST_EQ(&res1[0], ethalon);
const arr_type res2 = lexical_cast<arr_type>(val);
BOOST_TEST_EQ(&res2[0], ethalon);
BOOST_TEST_THROWS(lexical_cast<short_arr_type>(val), boost::bad_lexical_cast);
}
{
uarr_type res1 = lexical_cast<uarr_type>(val);
BOOST_TEST_EQ(reinterpret_cast<char*>(&res1[0]), ethalon);
const uarr_type res2 = lexical_cast<uarr_type>(val);
BOOST_TEST_EQ(reinterpret_cast<const char*>(&res2[0]), ethalon);
BOOST_TEST_THROWS(lexical_cast<ushort_arr_type>(val), boost::bad_lexical_cast);
}
{
sarr_type res1 = lexical_cast<sarr_type>(val);
BOOST_TEST_EQ(reinterpret_cast<char*>(&res1[0]), ethalon);
const sarr_type res2 = lexical_cast<sarr_type>(val);
BOOST_TEST_EQ(reinterpret_cast<const char*>(&res2[0]), ethalon);
BOOST_TEST_THROWS(lexical_cast<sshort_arr_type>(val), boost::bad_lexical_cast);
}
#if !defined(BOOST_NO_STRINGSTREAM) && !defined(BOOST_NO_STD_WSTRING) && !defined(_LIBCPP_VERSION)
typedef ArrayT<wchar_t, 4> warr_type;
typedef ArrayT<wchar_t, 3> wshort_arr_type;
std::wstring wethalon(L"100");
{
warr_type res = lexical_cast<warr_type>(val);
BOOST_TEST(&res[0] == wethalon);
warr_type res3 = lexical_cast<warr_type>(wethalon);
BOOST_TEST(&res3[0] == wethalon);
}
{
const warr_type res = lexical_cast<warr_type>(val);
BOOST_TEST(&res[0] == wethalon);
const warr_type res3 = lexical_cast<warr_type>(wethalon);
BOOST_TEST(&res3[0] == wethalon);
}
BOOST_TEST_THROWS(lexical_cast<wshort_arr_type>(val), boost::bad_lexical_cast);
#endif
#ifdef BOOST_LC_RUNU16
typedef ArrayT<char16_t, 300> u16arr_type;
typedef ArrayT<char16_t, 3> u16short_arr_type;
std::u16string u16ethalon(u"100");
{
#ifdef BOOST_STL_SUPPORTS_NEW_UNICODE_LOCALES
u16arr_type res = lexical_cast<u16arr_type>(val);
BOOST_TEST(&res[0] == u16ethalon);
#endif
u16arr_type res3 = lexical_cast<u16arr_type>(u16ethalon);
BOOST_TEST(&res3[0] == u16ethalon);
}
{
#ifdef BOOST_STL_SUPPORTS_NEW_UNICODE_LOCALES
const u16arr_type res = lexical_cast<u16arr_type>(val);
BOOST_TEST(&res[0] == u16ethalon);
#endif
const u16arr_type res3 = lexical_cast<u16arr_type>(u16ethalon);
BOOST_TEST(&res3[0] == u16ethalon);
}
// Some compillers may throw std::bad_alloc here
BOOST_TEST_THROWS(lexical_cast<u16short_arr_type>(val), std::exception);
#endif
#ifdef BOOST_LC_RUNU32
typedef ArrayT<char32_t, 300> u32arr_type;
typedef ArrayT<char32_t, 3> u32short_arr_type;
std::u32string u32ethalon(U"100");
{
#ifdef BOOST_STL_SUPPORTS_NEW_UNICODE_LOCALES
u32arr_type res = lexical_cast<u32arr_type>(val);
BOOST_TEST(&res[0] == u32ethalon);
#endif
u32arr_type res3 = lexical_cast<u32arr_type>(u32ethalon);
BOOST_TEST(&res3[0] == u32ethalon);
}
{
#ifdef BOOST_STL_SUPPORTS_NEW_UNICODE_LOCALES
const u32arr_type res = lexical_cast<u32arr_type>(val);
BOOST_TEST(&res[0] == u32ethalon);
#endif
const u32arr_type res3 = lexical_cast<u32arr_type>(u32ethalon);
BOOST_TEST(&res3[0] == u32ethalon);
}
// Some compillers may throw std::bad_alloc here
BOOST_TEST_THROWS(lexical_cast<u32short_arr_type>(val), std::exception);
#endif
}
void testing_boost_array_output_conversion()
{
#ifndef _LIBCPP_VERSION
testing_template_array_output_on_char_value<boost::array>();
testing_template_array_output_on_spec_value<boost::array>(100);
testing_template_array_output_on_spec_value<boost::array>(static_cast<short>(100));
testing_template_array_output_on_spec_value<boost::array>(static_cast<unsigned short>(100));
testing_template_array_output_on_spec_value<boost::array>(static_cast<unsigned int>(100));
#endif
}
void testing_std_array_output_conversion()
{
#ifndef BOOST_NO_CXX11_HDR_ARRAY
testing_template_array_output_on_char_value<std::array>();
testing_template_array_output_on_spec_value<std::array>(100);
testing_template_array_output_on_spec_value<std::array>(static_cast<short>(100));
testing_template_array_output_on_spec_value<std::array>(static_cast<unsigned short>(100));
testing_template_array_output_on_spec_value<std::array>(static_cast<unsigned int>(100));
#endif
BOOST_TEST(true);
}
template <template <class, std::size_t> class ArrayT>
static void testing_generic_array_input_conversion()
{
{
ArrayT<char, 4> var_zero_terminated = {{ '1', '0', '0', '\0'}};
BOOST_TEST_EQ(lexical_cast<std::string>(var_zero_terminated), "100");
BOOST_TEST_EQ(lexical_cast<int>(var_zero_terminated), 100);
ArrayT<char, 3> var_none_terminated = {{ '1', '0', '0'}};
BOOST_TEST_EQ(lexical_cast<std::string>(var_none_terminated), "100");
BOOST_TEST_EQ(lexical_cast<short>(var_none_terminated), static_cast<short>(100));
ArrayT<const char, 4> var_zero_terminated_const_char = {{ '1', '0', '0', '\0'}};
BOOST_TEST_EQ(lexical_cast<std::string>(var_zero_terminated_const_char), "100");
ArrayT<const char, 3> var_none_terminated_const_char = {{ '1', '0', '0'}};
BOOST_TEST_EQ(lexical_cast<std::string>(var_none_terminated_const_char), "100");
const ArrayT<char, 4> var_zero_terminated_const_var = {{ '1', '0', '0', '\0'}};
BOOST_TEST_EQ(lexical_cast<std::string>(var_zero_terminated_const_var), "100");
const ArrayT<char, 3> var_none_terminated_const_var = {{ '1', '0', '0'}};
BOOST_TEST_EQ(lexical_cast<std::string>(var_none_terminated_const_var), "100");
const ArrayT<const char, 4> var_zero_terminated_const_var_const_char = {{ '1', '0', '0', '\0'}};
BOOST_TEST_EQ(lexical_cast<std::string>(var_zero_terminated_const_var_const_char), "100");
const ArrayT<const char, 3> var_none_terminated_const_var_const_char = {{ '1', '0', '0'}};
BOOST_TEST_EQ(lexical_cast<std::string>(var_none_terminated_const_var_const_char), "100");
BOOST_TEST_EQ(lexical_cast<int>(var_none_terminated_const_var_const_char), 100);
}
{
const ArrayT<const unsigned char, 4> var_zero_terminated_const_var_const_char = {{ '1', '0', '0', '\0'}};
BOOST_TEST_EQ(lexical_cast<std::string>(var_zero_terminated_const_var_const_char), "100");
const ArrayT<const unsigned char, 3> var_none_terminated_const_var_const_char = {{ '1', '0', '0'}};
BOOST_TEST_EQ(lexical_cast<std::string>(var_none_terminated_const_var_const_char), "100");
}
{
const ArrayT<const signed char, 4> var_zero_terminated_const_var_const_char = {{ '1', '0', '0', '\0'}};
BOOST_TEST_EQ(lexical_cast<std::string>(var_zero_terminated_const_var_const_char), "100");
const ArrayT<const signed char, 3> var_none_terminated_const_var_const_char = {{ '1', '0', '0'}};
BOOST_TEST_EQ(lexical_cast<std::string>(var_none_terminated_const_var_const_char), "100");
BOOST_TEST_EQ(lexical_cast<unsigned int>(var_none_terminated_const_var_const_char), 100u);
}
#if !defined(BOOST_NO_STRINGSTREAM) && !defined(BOOST_NO_STD_WSTRING)
{
const ArrayT<const wchar_t, 4> var_zero_terminated_const_var_const_char = {{ L'1', L'0', L'0', L'\0'}};
BOOST_TEST(lexical_cast<std::wstring>(var_zero_terminated_const_var_const_char) == L"100");
const ArrayT<const wchar_t, 3> var_none_terminated_const_var_const_char = {{ L'1', L'0', L'0'}};
BOOST_TEST(lexical_cast<std::wstring>(var_none_terminated_const_var_const_char) == L"100");
BOOST_TEST_EQ(lexical_cast<int>(var_none_terminated_const_var_const_char), 100);
}
#endif
#ifdef BOOST_LC_RUNU16
{
const ArrayT<const char16_t, 4> var_zero_terminated_const_var_const_char = {{ u'1', u'0', u'0', u'\0'}};
BOOST_TEST(lexical_cast<std::u16string>(var_zero_terminated_const_var_const_char) == u"100");
BOOST_TEST_EQ(lexical_cast<unsigned short>(var_zero_terminated_const_var_const_char), static_cast<unsigned short>(100));
const ArrayT<const char16_t, 3> var_none_terminated_const_var_const_char = {{ u'1', u'0', u'0'}};
BOOST_TEST(lexical_cast<std::u16string>(var_none_terminated_const_var_const_char) == u"100");
}
#endif
#ifdef BOOST_LC_RUNU32
{
const ArrayT<const char32_t, 4> var_zero_terminated_const_var_const_char = {{ U'1', U'0', U'0', U'\0'}};
BOOST_TEST(lexical_cast<std::u32string>(var_zero_terminated_const_var_const_char) == U"100");
const ArrayT<const char32_t, 3> var_none_terminated_const_var_const_char = {{ U'1', U'0', U'0'}};
BOOST_TEST(lexical_cast<std::u32string>(var_none_terminated_const_var_const_char) == U"100");
BOOST_TEST_EQ(lexical_cast<int>(var_none_terminated_const_var_const_char), 100);
}
#endif
}
void testing_boost_array_input_conversion()
{
#ifndef _LIBCPP_VERSION
testing_generic_array_input_conversion<boost::array>();
#endif
BOOST_TEST(true);
}
void testing_std_array_input_conversion()
{
#ifndef BOOST_NO_CXX11_HDR_ARRAY
testing_generic_array_input_conversion<std::array>();
#endif
BOOST_TEST(true);
}
int main()
{
testing_boost_array_output_conversion();
testing_std_array_output_conversion();
testing_boost_array_input_conversion();
testing_std_array_input_conversion();
return boost::report_errors();
}
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# Copyright (c) 2016-2025 Antony Polukhin
# Copyright (c) 2025-2026 Fedor Osetrov
# Distributed under the Boost Software License, Version 1.0.
# See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt
cmake_minimum_required(VERSION 3.5...4.0)
project(lexical_cast_subdir_test LANGUAGES CXX)
set(deps
# Library dependencies
config
container
core
throw_exception
# Test dependencies
algorithm
array
align
assert
atomic
bind
compat
concept_check
container_hash
conversion
date_time
describe
detail
exception
filesystem
function
function_types
functional
fusion
integer
intrusive
io
iterator
move
mp11
mpl
numeric/conversion
optional
predef
preprocessor
range
regex
scope
smart_ptr
static_assert
system
test
tokenizer
tuple
type_index
type_traits
typeof
unordered
utility
variant
variant2
winapi
)
foreach(dep IN LISTS deps)
add_subdirectory(../../../${dep} boostorg/${dep})
endforeach()
enable_testing()
add_subdirectory(../../ boostorg/lexical_cast)
if (BOOST_USE_MODULES)
add_executable(boost_lexical_cast_module_usage ../modules/usage_sample.cpp)
target_link_libraries(boost_lexical_cast_module_usage PRIVATE Boost::lexical_cast)
add_test(NAME boost_lexical_cast_module_usage COMMAND boost_lexical_cast_module_usage)
endif()
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// Testing boost::lexical_cast with boost::container::string.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <boost/core/lightweight_test.hpp>
#include <boost/container/string.hpp>
#include <boost/lexical_cast.hpp>
using namespace boost;
void testing_boost_containers_basic_string()
{
BOOST_TEST("100" == lexical_cast<boost::container::string>("100"));
BOOST_TEST(L"100" == lexical_cast<boost::container::wstring>(L"100"));
BOOST_TEST("100" == lexical_cast<boost::container::string>(100));
boost::container::string str("1000");
BOOST_TEST(1000 == lexical_cast<int>(str));
}
#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
#define BOOST_LCAST_NO_WCHAR_T
#endif
void testing_boost_containers_string_std_string()
{
std::string std_str("std_str");
boost::container::string boost_str("boost_str");
BOOST_TEST(boost::lexical_cast<std::string>(boost_str) == "boost_str");
BOOST_TEST(boost::lexical_cast<boost::container::string>(std_str) == "std_str");
#ifndef BOOST_LCAST_NO_WCHAR_T
std::wstring std_wstr(L"std_wstr");
boost::container::wstring boost_wstr(L"boost_wstr");
BOOST_TEST(boost::lexical_cast<std::wstring>(boost_wstr) == L"boost_wstr");
BOOST_TEST(boost::lexical_cast<boost::container::wstring>(std_wstr) == L"std_wstr");
#endif
}
void testing_boost_containers_string_widening()
{
const char char_array[] = "Test string";
#ifndef BOOST_LCAST_NO_WCHAR_T
const wchar_t wchar_array[] = L"Test string";
BOOST_TEST(boost::lexical_cast<boost::container::wstring>(char_array) == wchar_array);
#endif
#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && defined(BOOST_STL_SUPPORTS_NEW_UNICODE_LOCALES)
const char16_t char16_array[] = u"Test string";
BOOST_TEST(boost::lexical_cast<boost::container::basic_string<char16_t> >(char_array) == char16_array);
#endif
#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && defined(BOOST_STL_SUPPORTS_NEW_UNICODE_LOCALES)
const char32_t char32_array[] = U"Test string";
BOOST_TEST(boost::lexical_cast<boost::container::basic_string<char32_t> >(char_array) == char32_array);
#endif
}
int main()
{
testing_boost_containers_basic_string();
testing_boost_containers_string_std_string();
testing_boost_containers_string_widening();
return boost::report_errors();
}
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <boost/range/iterator_range.hpp>
#include <boost/core/lightweight_test.hpp>
#include <vector>
#include <boost/lexical_cast.hpp>
#include "escape_struct.hpp"
using namespace boost;
#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
#define BOOST_LCAST_NO_WCHAR_T
#endif
template <class T>
void do_test_on_empty_input(T& v)
{
BOOST_TEST_THROWS(lexical_cast<int>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<float>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<double>(v), bad_lexical_cast);
#ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
BOOST_TEST_THROWS(lexical_cast<long double>(v), bad_lexical_cast);
#endif
BOOST_TEST_THROWS(lexical_cast<unsigned int>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<unsigned short>(v), bad_lexical_cast);
#if defined(BOOST_HAS_LONG_LONG)
BOOST_TEST_THROWS(lexical_cast<boost::ulong_long_type>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<boost::long_long_type>(v), bad_lexical_cast);
#elif defined(BOOST_HAS_MS_INT64)
BOOST_TEST_THROWS(lexical_cast<unsigned __int64>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<__int64>(v), bad_lexical_cast);
#endif
}
void test_empty_iterator_range()
{
boost::iterator_range<char*> v;
do_test_on_empty_input(v);
BOOST_TEST_EQ(lexical_cast<std::string>(v), std::string());
BOOST_TEST_THROWS(lexical_cast<char>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<unsigned char>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<signed char>(v), bad_lexical_cast);
boost::iterator_range<const char*> cv;
do_test_on_empty_input(cv);
BOOST_TEST_EQ(lexical_cast<std::string>(cv), std::string());
BOOST_TEST_THROWS(lexical_cast<char>(cv), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<unsigned char>(cv), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<signed char>(cv), bad_lexical_cast);
const boost::iterator_range<const char*> ccv;
do_test_on_empty_input(ccv);
BOOST_TEST_EQ(lexical_cast<std::string>(ccv), std::string());
BOOST_TEST_THROWS(lexical_cast<char>(ccv), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<unsigned char>(ccv), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<signed char>(ccv), bad_lexical_cast);
}
void test_empty_string()
{
std::string v;
do_test_on_empty_input(v);
BOOST_TEST_THROWS(lexical_cast<char>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<unsigned char>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<signed char>(v), bad_lexical_cast);
#ifndef BOOST_LCAST_NO_WCHAR_T
std::wstring vw;
do_test_on_empty_input(vw);
BOOST_TEST_THROWS(lexical_cast<wchar_t>(vw), bad_lexical_cast);
#endif
// Currently, no compiler and STL library fully support char16_t and char32_t
//#ifndef BOOST_NO_CXX11_CHAR16_T
// std::basic_string<char16_t> v16w;
// do_test_on_empty_input(v16w);
// BOOST_TEST_THROWS(lexical_cast<char16_t>(v16w), bad_lexical_cast);
//#endif
//#ifndef BOOST_NO_CXX11_CHAR32_T
// std::basic_string<char32_t> v32w;
// do_test_on_empty_input(v32w);
// BOOST_TEST_THROWS(lexical_cast<char32_t>(v32w), bad_lexical_cast);
//#endif
}
void test_empty_user_class()
{
EscapeStruct v("");
do_test_on_empty_input(v);
BOOST_TEST_THROWS(lexical_cast<char>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<unsigned char>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<signed char>(v), bad_lexical_cast);
}
namespace std {
inline std::ostream & operator<<(std::ostream & out, const std::vector<long> & v)
{
std::ostream_iterator<long> it(out);
std::copy(v.begin(), v.end(), it);
BOOST_TEST(out);
return out;
}
}
void test_empty_vector()
{
std::vector<long> v;
do_test_on_empty_input(v);
BOOST_TEST_THROWS(lexical_cast<char>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<unsigned char>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<signed char>(v), bad_lexical_cast);
}
struct my_string {
friend std::ostream &operator<<(std::ostream& sout, my_string const&/* st*/) {
return sout << "";
}
};
void test_empty_zero_terminated_string()
{
my_string st;
BOOST_TEST_EQ(boost::lexical_cast<std::string>(st), std::string());;
}
int main()
{
test_empty_iterator_range();
test_empty_string();
test_empty_user_class();
test_empty_vector();
test_empty_zero_terminated_string();
return boost::report_errors();
}
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// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Antony Polukhin, 2020-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#ifndef BOOST_LEXICAL_CAST_TEST_ESCAPE_STRUCT_HPP_
#define BOOST_LEXICAL_CAST_TEST_ESCAPE_STRUCT_HPP_
#include <istream>
#include <ostream>
struct EscapeStruct
{
EscapeStruct() {}
EscapeStruct(const std::string& s)
: str_(s)
{}
std::string str_;
};
inline std::ostream& operator<< (std::ostream& o, const EscapeStruct& rhs)
{
return o << rhs.str_;
}
inline std::istream& operator>> (std::istream& i, EscapeStruct& rhs)
{
return i >> rhs.str_;
}
#endif // BOOST_LEXICAL_CAST_TEST_ESCAPE_STRUCT_HPP_
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Antony Polukhin, 2013-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
//
// Test lexical_cast usage with long filesystem::path. Bug 7704.
#include <boost/core/lightweight_test.hpp>
#include <boost/filesystem/path.hpp>
#include <boost/lexical_cast.hpp>
void test_filesystem()
{
boost::filesystem::path p;
std::string s1 = "aaaaaaaaaaaaaaaaaaaaaaa";
p = boost::lexical_cast<boost::filesystem::path>(s1);
BOOST_TEST(!p.empty());
BOOST_TEST_EQ(p, s1);
p.clear();
const char ab[] = "aaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb";
p = boost::lexical_cast<boost::filesystem::path>(ab);
BOOST_TEST(!p.empty());
BOOST_TEST_EQ(p, ab);
// Tests for
// https://github.com/boostorg/lexical_cast/issues/25
const char quoted_path[] = "\"/home/my user\"";
p = boost::lexical_cast<boost::filesystem::path>(quoted_path);
BOOST_TEST(!p.empty());
const char unquoted_path[] = "/home/my user";
BOOST_TEST_EQ(p, boost::filesystem::path(unquoted_path));
// Converting back to std::string gives the initial string
BOOST_TEST_EQ(boost::lexical_cast<std::string>(p), quoted_path);
try {
// Without quotes the path will have only `/home/my` in it.
// `user` remains in the stream, so an exception must be thrown.
p = boost::lexical_cast<boost::filesystem::path>(unquoted_path);
BOOST_TEST(false);
} catch (const boost::bad_lexical_cast& ) {
// Exception is expected
}
}
int main()
{
test_filesystem();
return boost::report_errors();
}
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@@ -1,604 +0,0 @@
// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <sstream>
#include <type_traits>
#include <boost/cstdint.hpp>
#include <boost/core/lightweight_test.hpp>
#ifndef BOOST_LEXICAL_CAST_DETAIL_TEST_ON_OLD
#include <boost/lexical_cast/detail/type_traits.hpp>
#include <boost/lexical_cast.hpp>
#else
// Make sure that tests work the same way on non-optimized version
#include "lexical_cast_old.hpp"
#include <boost/lexical_cast/detail/type_traits.hpp>
#endif
#ifndef BOOST_TEST_CLOSE_FRACTION
// Naiive, but works for most tests in this file
#define BOOST_TEST_CLOSE_FRACTION(x, y, eps) \
BOOST_TEST(x - y + eps <= eps * 2); \
BOOST_TEST(y - x + eps <= eps * 2);
#endif
#if (defined(__CYGWIN__) || defined(__FreeBSD__) || defined(__NetBSD__) \
|| (defined(__hppa) && !defined(__OpenBSD__)) || (defined(__NO_LONG_DOUBLE_MATH) && (DBL_MANT_DIG != LDBL_MANT_DIG))) \
|| defined(__MINGW64__)
# define BOOST_LEXICAL_CAST_NO_LONG_DOUBLE_MATH_FUNCTIONS
#endif
using namespace boost;
// Replace "-,999" with "-999".
template<class CharT>
std::basic_string<CharT> to_str_gcc_workaround(std::basic_string<CharT> str)
{
std::locale loc;
std::numpunct<CharT> const& np = BOOST_USE_FACET(std::numpunct<CharT>, loc);
std::ctype<CharT> const& ct = BOOST_USE_FACET(std::ctype<CharT>, loc);
if(np.grouping().empty())
return str;
CharT prefix[3] = { ct.widen('-'), np.thousands_sep(), CharT() };
if(str.find(prefix) != 0)
return str;
prefix[1] = CharT();
str.replace(0, 2, prefix);
return str;
}
template<class CharT, class T>
std::basic_string<CharT> to_str(T t)
{
std::basic_ostringstream<CharT> o;
o << t;
return to_str_gcc_workaround(o.str());
}
template<class T>
void test_conversion_from_to_float_for_locale()
{
std::locale current_locale;
typedef std::numpunct<char> numpunct;
numpunct const& np = BOOST_USE_FACET(numpunct, current_locale);
if ( !np.grouping().empty() )
{
BOOST_TEST_THROWS(
lexical_cast<T>( std::string("100") + np.thousands_sep() + np.thousands_sep() + "0" )
, bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>( std::string("100") + np.thousands_sep() ), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>( np.thousands_sep() + std::string("100") ), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>( std::string("1") + np.thousands_sep() + np.decimal_point() + "e10" ), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>( std::string("1e10") + np.thousands_sep() ), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>( std::string("1") + np.thousands_sep() + "e10" ), bad_lexical_cast);
BOOST_TEST_CLOSE_FRACTION(lexical_cast<T>( to_str< char >(100000) ), 100000, (std::numeric_limits<T>::epsilon()) );
BOOST_TEST_CLOSE_FRACTION(lexical_cast<T>( to_str< char >(10000000u) ), 10000000u, (std::numeric_limits<T>::epsilon()) );
BOOST_TEST_CLOSE_FRACTION(lexical_cast<T>( to_str< char >(100) ), 100, (std::numeric_limits<T>::epsilon()) );
#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
BOOST_TEST_CLOSE_FRACTION(lexical_cast<T>( to_str< wchar_t >(100000) ), 100000, (std::numeric_limits<T>::epsilon()) );
BOOST_TEST_CLOSE_FRACTION(lexical_cast<T>( to_str< wchar_t >(10000000u) ), 10000000u, (std::numeric_limits<T>::epsilon()) );
BOOST_TEST_CLOSE_FRACTION(lexical_cast<T>( to_str< wchar_t >(100) ), 100, (std::numeric_limits<T>::epsilon()) );
#endif
// Exception must not be thrown, when we are using no separators at all
BOOST_TEST_CLOSE_FRACTION( lexical_cast<T>("30000"), static_cast<T>(30000), (std::numeric_limits<T>::epsilon()) );
}
}
/*
* Converts char* [and wchar_t*] to float number type and checks, that generated
* number does not exceeds allowed epsilon.
*/
#ifndef BOOST_LCAST_NO_WCHAR_T
#define CHECK_CLOSE_ABS_DIFF(VAL,PREFIX) \
converted_val = lexical_cast<test_t>(#VAL); \
BOOST_TEST_CLOSE_FRACTION( (static_cast<bool>(VAL ## L)? VAL ## L : std::numeric_limits<test_t>::epsilon()), \
(converted_val ? converted_val : std::numeric_limits<test_t>::epsilon()), \
std::numeric_limits<test_t>::epsilon() \
); \
BOOST_TEST_EQ(converted_val, lexical_cast<test_t>(L## #VAL) );
#else
#define CHECK_CLOSE_ABS_DIFF(VAL,TYPE) \
converted_val = lexical_cast<test_t>(#VAL); \
BOOST_TEST_CLOSE_FRACTION( (static_cast<bool>(VAL ## L)? VAL ## L : std::numeric_limits<test_t>::epsilon()), \
(converted_val ? converted_val : std::numeric_limits<test_t>::epsilon()), \
std::numeric_limits<test_t>::epsilon() \
);
#endif
template <class TestType>
void test_converion_to_float_types()
{
typedef TestType test_t;
test_t converted_val;
BOOST_TEST_CLOSE_FRACTION(1.0, lexical_cast<test_t>('1'), (std::numeric_limits<test_t>::epsilon()));
BOOST_TEST_EQ(0.0, lexical_cast<test_t>('0'));
unsigned char const uc_one = '1';
unsigned char const uc_zero ='0';
BOOST_TEST_CLOSE_FRACTION(1.0, lexical_cast<test_t>(uc_one), (std::numeric_limits<test_t>::epsilon()));
BOOST_TEST_EQ(0.0, lexical_cast<test_t>(uc_zero));
signed char const sc_one = '1';
signed char const sc_zero ='0';
BOOST_TEST_CLOSE_FRACTION(1.0, lexical_cast<test_t>(sc_one), (std::numeric_limits<test_t>::epsilon()));
BOOST_TEST_EQ(0.0, lexical_cast<test_t>(sc_zero));
BOOST_TEST_CLOSE_FRACTION(1e34L, lexical_cast<test_t>( "10000000000000000000000000000000000"), (std::numeric_limits<test_t>::epsilon() * 1e34L) );
// VC failes the next test
// BOOST_TEST_CLOSE_FRACTION(1e-35L, lexical_cast<test_t>("0.00000000000000000000000000000000001"), (std::numeric_limits<test_t>::epsilon()) );
BOOST_TEST_CLOSE_FRACTION(
0.1111111111111111111111111111111111111111111111111111111111111111111111111L
, lexical_cast<test_t>("0.1111111111111111111111111111111111111111111111111111111111111111111111111")
, (std::numeric_limits<test_t>::epsilon()) );
CHECK_CLOSE_ABS_DIFF(1,test_t);
BOOST_TEST_EQ(0,lexical_cast<test_t>("0"));
CHECK_CLOSE_ABS_DIFF(-1,test_t);
CHECK_CLOSE_ABS_DIFF(1.0, test_t);
CHECK_CLOSE_ABS_DIFF(0.0, test_t);
CHECK_CLOSE_ABS_DIFF(-1.0,test_t);
CHECK_CLOSE_ABS_DIFF(1e1, test_t);
CHECK_CLOSE_ABS_DIFF(0e1, test_t);
CHECK_CLOSE_ABS_DIFF(-1e1,test_t);
CHECK_CLOSE_ABS_DIFF(1.0e1, test_t);
CHECK_CLOSE_ABS_DIFF(0.0e1, test_t);
CHECK_CLOSE_ABS_DIFF(-1.0e1,test_t);
CHECK_CLOSE_ABS_DIFF(1e-1, test_t);
CHECK_CLOSE_ABS_DIFF(0e-1, test_t);
CHECK_CLOSE_ABS_DIFF(-1e-1,test_t);
CHECK_CLOSE_ABS_DIFF(1.0e-1, test_t);
CHECK_CLOSE_ABS_DIFF(0.0e-1, test_t);
CHECK_CLOSE_ABS_DIFF(-1.0e-1,test_t);
CHECK_CLOSE_ABS_DIFF(1E1, test_t);
CHECK_CLOSE_ABS_DIFF(0E1, test_t);
CHECK_CLOSE_ABS_DIFF(-1E1,test_t);
CHECK_CLOSE_ABS_DIFF(1.0E1, test_t);
CHECK_CLOSE_ABS_DIFF(0.0E1, test_t);
CHECK_CLOSE_ABS_DIFF(-1.0E1,test_t);
CHECK_CLOSE_ABS_DIFF(1E-1, test_t);
CHECK_CLOSE_ABS_DIFF(0E-1, test_t);
CHECK_CLOSE_ABS_DIFF(-1E-1,test_t);
CHECK_CLOSE_ABS_DIFF(1.0E-1, test_t);
CHECK_CLOSE_ABS_DIFF(0.0E-1, test_t);
CHECK_CLOSE_ABS_DIFF(-1.0E-1, test_t);
CHECK_CLOSE_ABS_DIFF(.0E-1, test_t);
CHECK_CLOSE_ABS_DIFF(.0E-1, test_t);
CHECK_CLOSE_ABS_DIFF(-.0E-1, test_t);
CHECK_CLOSE_ABS_DIFF(10.0, test_t);
CHECK_CLOSE_ABS_DIFF(00.0, test_t);
CHECK_CLOSE_ABS_DIFF(-10.0,test_t);
CHECK_CLOSE_ABS_DIFF(10e1, test_t);
CHECK_CLOSE_ABS_DIFF(00e1, test_t);
CHECK_CLOSE_ABS_DIFF(-10e1,test_t);
CHECK_CLOSE_ABS_DIFF(10.0e1, test_t);
CHECK_CLOSE_ABS_DIFF(00.0e1, test_t);
CHECK_CLOSE_ABS_DIFF(-10.0e1,test_t);
CHECK_CLOSE_ABS_DIFF(10e-1, test_t);
CHECK_CLOSE_ABS_DIFF(00e-1, test_t);
CHECK_CLOSE_ABS_DIFF(-10e-1,test_t);
CHECK_CLOSE_ABS_DIFF(10.0e-1, test_t);
CHECK_CLOSE_ABS_DIFF(00.0e-1, test_t);
CHECK_CLOSE_ABS_DIFF(-10.0e-1,test_t);
CHECK_CLOSE_ABS_DIFF(10E1, test_t);
CHECK_CLOSE_ABS_DIFF(00E1, test_t);
CHECK_CLOSE_ABS_DIFF(-10E1,test_t);
CHECK_CLOSE_ABS_DIFF(10.0E1, test_t);
CHECK_CLOSE_ABS_DIFF(00.0E1, test_t);
CHECK_CLOSE_ABS_DIFF(-10.0E1,test_t);
CHECK_CLOSE_ABS_DIFF(10E-1, test_t);
CHECK_CLOSE_ABS_DIFF(00E-1, test_t);
CHECK_CLOSE_ABS_DIFF(-10E-1,test_t);
CHECK_CLOSE_ABS_DIFF(10.0E-1, test_t);
CHECK_CLOSE_ABS_DIFF(00.0E-1, test_t);
CHECK_CLOSE_ABS_DIFF(-10.0E-1, test_t);
CHECK_CLOSE_ABS_DIFF(-10101.0E-011, test_t);
CHECK_CLOSE_ABS_DIFF(-10101093, test_t);
CHECK_CLOSE_ABS_DIFF(10101093, test_t);
CHECK_CLOSE_ABS_DIFF(-.34, test_t);
CHECK_CLOSE_ABS_DIFF(.34, test_t);
CHECK_CLOSE_ABS_DIFF(.34e10, test_t);
BOOST_TEST_THROWS(lexical_cast<test_t>("-1.e"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("-1.E"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("1.e"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("1.E"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("1.0e"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("1.0E"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("10E"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("10e"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("1.0e-"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("1.0E-"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("10E-"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("10e-"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("e1"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("e-1"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("e-"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>(".e"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>(".11111111111111111111111111111111111111111111111111111111111111111111ee"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>(".11111111111111111111111111111111111111111111111111111111111111111111e-"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("."), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("-B"), bad_lexical_cast);
// Following two tests are not valid for C++11 compilers
//BOOST_TEST_THROWS(lexical_cast<test_t>("0xB"), bad_lexical_cast);
//BOOST_TEST_THROWS(lexical_cast<test_t>("0x0"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("--1.0"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("1.0e--1"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("1.0.0"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("1e1e1"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("1.0e-1e-1"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>(" 1.0"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("1.0 "), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>(""), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("-"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>('\0'), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>('-'), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>('.'), bad_lexical_cast);
}
template <class T>
void test_float_typess_for_overflows()
{
typedef T test_t;
test_t minvalue = (std::numeric_limits<test_t>::min)();
std::string s_min_value = lexical_cast<std::string>(minvalue);
BOOST_TEST_CLOSE_FRACTION(minvalue, lexical_cast<test_t>(minvalue), (std::numeric_limits<test_t>::epsilon()));
BOOST_TEST_CLOSE_FRACTION(minvalue, lexical_cast<test_t>(s_min_value), (std::numeric_limits<test_t>::epsilon() * 2));
test_t maxvalue = (std::numeric_limits<test_t>::max)();
std::string s_max_value = lexical_cast<std::string>(maxvalue);
BOOST_TEST_CLOSE_FRACTION(maxvalue, lexical_cast<test_t>(maxvalue), (std::numeric_limits<test_t>::epsilon()));
BOOST_TEST_CLOSE_FRACTION(maxvalue, lexical_cast<test_t>(s_max_value), (std::numeric_limits<test_t>::epsilon()));
#ifndef _LIBCPP_VERSION
// libc++ had a bug in implementation of stream conversions for values that must be represented as infinity.
// http://llvm.org/bugs/show_bug.cgi?id=15723#c4
BOOST_TEST_THROWS(lexical_cast<test_t>(s_max_value+"1"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>(s_max_value+"9"), bad_lexical_cast);
// VC9 can fail the following tests on floats and doubles when using stingstream...
BOOST_TEST_THROWS(lexical_cast<test_t>("1"+s_max_value), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<test_t>("9"+s_max_value), bad_lexical_cast);
#endif
#if !(defined(_LIBCPP_VERSION) && defined(BOOST_LEXICAL_CAST_DETAIL_TEST_ON_OLD))
if ( std::is_same<test_t,float>::value )
{
BOOST_TEST_THROWS(lexical_cast<test_t>( (std::numeric_limits<double>::max)() ), bad_lexical_cast);
BOOST_TEST(
(std::numeric_limits<double>::min)() - std::numeric_limits<test_t>::epsilon()
<= lexical_cast<test_t>( (std::numeric_limits<double>::min)() )
&& lexical_cast<test_t>( (std::numeric_limits<double>::min)() )
<= (std::numeric_limits<double>::min)() + std::numeric_limits<test_t>::epsilon()
);
BOOST_TEST(
(std::numeric_limits<double>::min)() / 2 - std::numeric_limits<test_t>::epsilon()
<= lexical_cast<test_t>( (std::numeric_limits<double>::min)() / 2 )
&& lexical_cast<test_t>( (std::numeric_limits<double>::min)() / 2 )
<= (std::numeric_limits<double>::min)() / 2 + std::numeric_limits<test_t>::epsilon()
);
}
if ( sizeof(test_t) < sizeof(long double) )
{
BOOST_TEST_THROWS(lexical_cast<test_t>( (std::numeric_limits<long double>::max)() ), bad_lexical_cast);
BOOST_TEST(
(std::numeric_limits<long double>::min)() - std::numeric_limits<test_t>::epsilon()
<= lexical_cast<test_t>( (std::numeric_limits<long double>::min)() )
&& lexical_cast<test_t>( (std::numeric_limits<long double>::min)() )
<= (std::numeric_limits<long double>::min)() + std::numeric_limits<test_t>::epsilon()
);
BOOST_TEST(
(std::numeric_limits<long double>::min)() / 2 - std::numeric_limits<test_t>::epsilon()
<= lexical_cast<test_t>( (std::numeric_limits<long double>::min)() / 2 )
&& lexical_cast<test_t>( (std::numeric_limits<long double>::min)() / 2 )
<= (std::numeric_limits<long double>::min)() / 2 + std::numeric_limits<test_t>::epsilon()
);
}
#endif
}
#undef CHECK_CLOSE_ABS_DIFF
// Epsilon is multiplied by 2 because of two lexical conversions
#define TEST_TO_FROM_CAST_AROUND_TYPED(VAL,STRING_TYPE) \
test_value = VAL + std::numeric_limits<test_t>::epsilon() * i ; \
converted_val = lexical_cast<test_t>( lexical_cast<STRING_TYPE>(test_value) ); \
BOOST_TEST_CLOSE_FRACTION( \
test_value, \
converted_val, \
std::numeric_limits<test_t>::epsilon() * 2 \
);
/*
* For interval [ from_mult*epsilon+VAL, to_mult*epsilon+VAL ], converts float type
* numbers to string[wstring] and then back to float type, then compares initial
* values and generated.
* Step is epsilon
*/
#ifndef BOOST_LCAST_NO_WCHAR_T
# define TEST_TO_FROM_CAST_AROUND(VAL) \
for(i=from_mult; i<=to_mult; ++i) { \
TEST_TO_FROM_CAST_AROUND_TYPED(VAL, std::string) \
TEST_TO_FROM_CAST_AROUND_TYPED(VAL, std::wstring) \
}
#else
# define TEST_TO_FROM_CAST_AROUND(VAL) \
for(i=from_mult; i<=to_mult; ++i) { \
TEST_TO_FROM_CAST_AROUND_TYPED(VAL, std::string) \
}
#endif
template <class TestType>
void test_converion_from_to_float_types()
{
typedef TestType test_t;
test_t test_value;
test_t converted_val;
int i;
int from_mult = -50;
int to_mult = 50;
TEST_TO_FROM_CAST_AROUND( 0.0 );
long double val1;
for(val1 = 1.0e-10L; val1 < 1e11; val1*=10 )
TEST_TO_FROM_CAST_AROUND( val1 );
long double val2;
for(val2 = -1.0e-10L; val2 > -1e11; val2*=10 )
TEST_TO_FROM_CAST_AROUND( val2 );
from_mult = -100;
to_mult = 0;
TEST_TO_FROM_CAST_AROUND( (std::numeric_limits<test_t>::max)() );
from_mult = 0;
to_mult = 100;
TEST_TO_FROM_CAST_AROUND( (std::numeric_limits<test_t>::min)() );
}
#undef TEST_TO_FROM_CAST_AROUND
#undef TEST_TO_FROM_CAST_AROUND_TYPED
template<class T, class CharT>
void test_conversion_from_float_to_char(CharT zero)
{
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(0)) == zero + 0);
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(1)) == zero + 1);
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(2)) == zero + 2);
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(3)) == zero + 3);
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(4)) == zero + 4);
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(5)) == zero + 5);
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(6)) == zero + 6);
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(7)) == zero + 7);
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(8)) == zero + 8);
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(9)) == zero + 9);
BOOST_TEST_THROWS(lexical_cast<CharT>(static_cast<T>(10)), bad_lexical_cast);
T t = (std::numeric_limits<T>::max)();
BOOST_TEST_THROWS(lexical_cast<CharT>(t), bad_lexical_cast);
}
template<class T, class CharT>
void test_conversion_from_char_to_float(CharT zero)
{
BOOST_TEST_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 0)), static_cast<T>(0), (std::numeric_limits<T>::epsilon()) );
BOOST_TEST_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 1)), static_cast<T>(1), (std::numeric_limits<T>::epsilon()) );
BOOST_TEST_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 2)), static_cast<T>(2), (std::numeric_limits<T>::epsilon()) );
BOOST_TEST_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 3)), static_cast<T>(3), (std::numeric_limits<T>::epsilon()) );
BOOST_TEST_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 4)), static_cast<T>(4), (std::numeric_limits<T>::epsilon()) );
BOOST_TEST_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 5)), static_cast<T>(5), (std::numeric_limits<T>::epsilon()) );
BOOST_TEST_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 6)), static_cast<T>(6), (std::numeric_limits<T>::epsilon()) );
BOOST_TEST_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 7)), static_cast<T>(7), (std::numeric_limits<T>::epsilon()) );
BOOST_TEST_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 8)), static_cast<T>(8), (std::numeric_limits<T>::epsilon()) );
BOOST_TEST_CLOSE_FRACTION(lexical_cast<T>( static_cast<CharT>(zero + 9)), static_cast<T>(9), (std::numeric_limits<T>::epsilon()) );
BOOST_TEST_THROWS(lexical_cast<T>( static_cast<CharT>(zero + 10)), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>( static_cast<CharT>(zero - 1)), bad_lexical_cast);
}
struct restore_oldloc
{
std::locale oldloc;
~restore_oldloc() { std::locale::global(oldloc); }
};
template<class T>
void test_conversion_from_to_float()
{ char const zero = '0';
signed char const szero = '0';
unsigned char const uzero = '0';
test_conversion_from_float_to_char<T>(zero);
test_conversion_from_char_to_float<T>(zero);
test_conversion_from_float_to_char<T>(szero);
test_conversion_from_char_to_float<T>(szero);
test_conversion_from_float_to_char<T>(uzero);
test_conversion_from_char_to_float<T>(uzero);
#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
wchar_t const wzero = L'0';
test_conversion_from_float_to_char<T>(wzero);
test_conversion_from_char_to_float<T>(wzero);
#endif
BOOST_TEST_CLOSE_FRACTION(lexical_cast<T>("+1"), 1, std::numeric_limits<T>::epsilon());
BOOST_TEST_CLOSE_FRACTION(lexical_cast<T>("+9"), 9, std::numeric_limits<T>::epsilon());
BOOST_TEST_THROWS(lexical_cast<T>("++1"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>("-+9"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>("--1"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>("+-9"), bad_lexical_cast);
test_converion_to_float_types<T>();
test_float_typess_for_overflows<T>();
test_converion_from_to_float_types<T>();
typedef std::numpunct<char> numpunct;
restore_oldloc guard;
std::locale const& oldloc = guard.oldloc;
std::string grouping1 = BOOST_USE_FACET(numpunct, oldloc).grouping();
std::string grouping2(grouping1);
test_conversion_from_to_float_for_locale<T>();
try
{
std::locale newloc("");
std::locale::global(newloc);
grouping2 = BOOST_USE_FACET(numpunct, newloc).grouping();
}
catch(std::exception const& ex)
{
std::string msg("Failed to set system locale: ");
msg += ex.what();
std::cerr << msg;
}
if(grouping1 != grouping2)
test_conversion_from_to_float_for_locale<T>();
if(grouping1.empty() && grouping2.empty())
std::cerr << "Formatting with thousands_sep has not been tested";
}
void test_conversion_from_to_float()
{
test_conversion_from_to_float<float>();
}
void test_conversion_from_to_double()
{
test_conversion_from_to_float<double>();
}
void test_conversion_from_to_long_double()
{
// We do not run tests on compilers and Standard Libraries with poor support of long double
#if !defined(BOOST_LEXICAL_CAST_NO_LONG_DOUBLE_MATH_FUNCTIONS)
test_conversion_from_to_float<long double>();
#endif
BOOST_TEST(true);
}
template <class Integral, class Float>
void test_conversion_integral_float()
{
BOOST_TEST_CLOSE_FRACTION(lexical_cast<Float>(static_cast<Float>(1)), static_cast<Float>(1), std::numeric_limits<Float>::epsilon());
BOOST_TEST_CLOSE_FRACTION(lexical_cast<Float>(static_cast<Float>(1.1234)), static_cast<Float>(1.1234), std::numeric_limits<Float>::epsilon());
BOOST_TEST_CLOSE_FRACTION(lexical_cast<Float>(static_cast<Float>(-1.1234)), static_cast<Float>(-1.1234), std::numeric_limits<Float>::epsilon());
BOOST_TEST_CLOSE_FRACTION(lexical_cast<Float>(static_cast<Integral>(0)), static_cast<Float>(0), std::numeric_limits<Float>::epsilon());
BOOST_TEST_CLOSE_FRACTION(lexical_cast<Float>(static_cast<Integral>(1)), static_cast<Float>(1), std::numeric_limits<Float>::epsilon());
#ifndef __CYGWIN__
BOOST_TEST_CLOSE_FRACTION(lexical_cast<Float>((std::numeric_limits<Integral>::max)()), static_cast<Float>((std::numeric_limits<Integral>::max)()), std::numeric_limits<Float>::epsilon());
BOOST_TEST_CLOSE_FRACTION(lexical_cast<Float>((std::numeric_limits<Integral>::min)()), static_cast<Float>((std::numeric_limits<Integral>::min)()), std::numeric_limits<Float>::epsilon());
#endif
BOOST_TEST_EQ(lexical_cast<Integral>(static_cast<Float>(0.0)), 0);
BOOST_TEST_EQ(lexical_cast<Integral>(static_cast<Float>(1.0)), 1);
BOOST_TEST_EQ(lexical_cast<Integral>(static_cast<Float>(8.0)), 8);
BOOST_TEST_EQ(lexical_cast<Integral>(static_cast<Float>(16.0)), 16);
if (boost::detail::lcast::is_signed<Integral>::value) {
BOOST_TEST_EQ(lexical_cast<Integral>(static_cast<Float>(-1.0)), -1);
BOOST_TEST_EQ(lexical_cast<Integral>(static_cast<Float>(-8.0)), -8);
BOOST_TEST_EQ(lexical_cast<Integral>(static_cast<Float>(-16.0)), -16);
} else {
BOOST_TEST_EQ(lexical_cast<Integral>(static_cast<Float>(-1.0)), (std::numeric_limits<Integral>::max)());
BOOST_TEST_EQ(lexical_cast<Integral>(static_cast<Float>(-8.0)), (std::numeric_limits<Integral>::max)() - 7);
BOOST_TEST_EQ(lexical_cast<Integral>(static_cast<Float>(-16.0)), (std::numeric_limits<Integral>::max)() - 15);
}
BOOST_TEST_THROWS(lexical_cast<Integral>(static_cast<Float>(0.5)), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>(static_cast<Float>(-0.5)), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>(static_cast<Float>(1.5)), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>(static_cast<Float>(-1.5)), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>((std::numeric_limits<Float>::min)()), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>((std::numeric_limits<Float>::max)()), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>((std::numeric_limits<Float>::epsilon)()), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>((std::numeric_limits<Float>::lowest)()), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>(std::numeric_limits<Float>::quiet_NaN()), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>(-std::numeric_limits<Float>::quiet_NaN()), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>(std::numeric_limits<Float>::infinity()), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>(-std::numeric_limits<Float>::infinity()), bad_lexical_cast);
}
int main()
{
test_conversion_from_to_float();
test_conversion_from_to_double();
test_conversion_from_to_long_double();
test_conversion_integral_float<int, float>();
test_conversion_integral_float<int, double>();
test_conversion_integral_float<unsigned short, float>();
test_conversion_integral_float<unsigned short, double>();
test_conversion_integral_float<short, float>();
test_conversion_integral_float<short, double>();
test_conversion_integral_float<long int, float>();
test_conversion_integral_float<long int, double>();
test_conversion_integral_float<long long, float>();
test_conversion_integral_float<long long, double>();
test_conversion_integral_float<unsigned long long, float>();
test_conversion_integral_float<unsigned long long, double>();
return boost::report_errors();
}
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// Copyright Antony Polukhin, 2013-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <boost/lexical_cast.hpp>
#include <string>
int main()
{
volatile int i = 42;
boost::lexical_cast<std::string>(i);
return 1;
}
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// Copyright David Abrahams 2003.
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#include <boost/implicit_cast.hpp>
#include <cassert>
#include <boost/type.hpp>
using boost::implicit_cast;
using boost::type;
template <class T>
type<T> check_return(T) { return type<T>(); }
struct foo
{
foo(char const*) {}
operator long() const { return 0; }
};
typedef type<long> long_type;
typedef type<foo> foo_type;
int main()
{
type<long> x = check_return(boost::implicit_cast<long>(1));
assert(boost::implicit_cast<long>(1) == 1L);
type<foo> f = check_return(boost::implicit_cast<foo>("hello"));
type<long> z = check_return(boost::implicit_cast<long>(foo("hello")));
return 0;
}
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// Copyright David Abrahams 2003.
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#include <boost/implicit_cast.hpp>
#include <boost/type.hpp>
#define BOOST_INCLUDE_MAIN
#include <boost/test/test_tools.hpp>
using boost::implicit_cast;
struct foo
{
explicit foo(char const*) {}
};
int test_main(int, char*[])
{
foo x = implicit_cast<foo>("foobar");
}
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// Copyright Antony Polukhin, 2023-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <boost/core/lightweight_test.hpp>
#include <boost/lexical_cast.hpp>
struct oops {
operator int () const {
return 41;
}
};
inline std::ostream& operator<<(std::ostream& os, const oops&) {
return os << 42;
}
struct oops2 {
operator double () const {
return 1.12;
}
};
inline std::ostream& operator<<(std::ostream& os, const oops2&) {
return os << 2;
}
struct Value {
explicit Value(double x) : x(x) {}
operator double() const {
return x;
}
double x;
};
int main() {
BOOST_TEST_EQ(boost::lexical_cast<int>(oops{}), 42);
BOOST_TEST_EQ(boost::lexical_cast<std::string>(oops{}), "42");
BOOST_TEST_EQ(boost::lexical_cast<double>(oops2{}), 2);
BOOST_TEST_EQ(boost::lexical_cast<std::string>(oops2{}), "2");
Value longer_that_1_digit(128);
BOOST_TEST_EQ(boost::lexical_cast<std::string>(longer_that_1_digit), "128");
// iostreams have default precision 6, see [basic.ios.cons]
const double precision_more_than_6_digits = 1.23456789123;
// At the moment we do not set the precision for types that use conversion
// operators for ostreaming, so the below test pass. We do not set precision
// for user provided `operator<<`, types with conversion operators follow
// the same design decision for now.
BOOST_TEST_NE(
boost::lexical_cast<std::string>(Value(precision_more_than_6_digits)),
boost::lexical_cast<std::string>(precision_more_than_6_digits)
);
return boost::report_errors();
}
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <type_traits>
#include <boost/core/cmath.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/lexical_cast.hpp>
#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
#define BOOST_LCAST_NO_WCHAR_T
#endif
using namespace boost;
template <class T>
bool is_pos_inf(T value)
{
return (boost::core::isinf)(value) && !(boost::core::signbit)(value);
}
template <class T>
bool is_neg_inf(T value)
{
return (boost::core::isinf)(value) && (boost::core::signbit)(value);
}
template <class T>
bool is_pos_nan(T value)
{
return (boost::core::isnan)(value) && !(boost::core::signbit)(value);
}
template <class T>
bool is_neg_nan(T value)
{
/* There is some strange behaviour on Itanium platform with -nan nuber for long double.
* It is a IA64 feature, or it is a boost::math feature, not a lexical_cast bug */
#if defined(__ia64__) || defined(_M_IA64)
return (boost::core::isnan)(value)
&& ( std::is_same<T, long double >::value || (boost::core::signbit)(value) );
#else
return (boost::core::isnan)(value) && (boost::core::signbit)(value);
#endif
}
template <class T>
void test_inf_nan_templated()
{
typedef T test_t;
BOOST_TEST( is_pos_inf( lexical_cast<test_t>("inf") ) );
BOOST_TEST( is_pos_inf( lexical_cast<test_t>("INF") ) );
BOOST_TEST( is_neg_inf( lexical_cast<test_t>("-inf") ) );
BOOST_TEST( is_neg_inf( lexical_cast<test_t>("-INF") ) );
BOOST_TEST( is_pos_inf( lexical_cast<test_t>("+inf") ) );
BOOST_TEST( is_pos_inf( lexical_cast<test_t>("+INF") ) );
BOOST_TEST( is_pos_inf( lexical_cast<test_t>("infinity") ) );
BOOST_TEST( is_pos_inf( lexical_cast<test_t>("INFINITY") ) );
BOOST_TEST( is_neg_inf( lexical_cast<test_t>("-infinity") ) );
BOOST_TEST( is_neg_inf( lexical_cast<test_t>("-INFINITY") ) );
BOOST_TEST( is_pos_inf( lexical_cast<test_t>("+infinity") ) );
BOOST_TEST( is_pos_inf( lexical_cast<test_t>("+INFINITY") ) );
BOOST_TEST( is_pos_inf( lexical_cast<test_t>("iNfiNity") ) );
BOOST_TEST( is_pos_inf( lexical_cast<test_t>("INfinity") ) );
BOOST_TEST( is_neg_inf( lexical_cast<test_t>("-inFINITY") ) );
BOOST_TEST( is_neg_inf( lexical_cast<test_t>("-INFINITY") ) );
BOOST_TEST( is_pos_nan( lexical_cast<test_t>("nan") ) );
BOOST_TEST( is_pos_nan( lexical_cast<test_t>("NAN") ) );
BOOST_TEST( is_neg_nan( lexical_cast<test_t>("-nan") ) );
BOOST_TEST( is_neg_nan( lexical_cast<test_t>("-NAN") ) );
BOOST_TEST( is_pos_nan( lexical_cast<test_t>("+nan") ) );
BOOST_TEST( is_pos_nan( lexical_cast<test_t>("+NAN") ) );
BOOST_TEST( is_pos_nan( lexical_cast<test_t>("nAn") ) );
BOOST_TEST( is_pos_nan( lexical_cast<test_t>("NaN") ) );
BOOST_TEST( is_neg_nan( lexical_cast<test_t>("-nAn") ) );
BOOST_TEST( is_neg_nan( lexical_cast<test_t>("-NaN") ) );
BOOST_TEST( is_pos_nan( lexical_cast<test_t>("+Nan") ) );
BOOST_TEST( is_pos_nan( lexical_cast<test_t>("+nAN") ) );
BOOST_TEST( is_pos_nan( lexical_cast<test_t>("nan()") ) );
BOOST_TEST( is_pos_nan( lexical_cast<test_t>("NAN(some string)") ) );
BOOST_TEST_THROWS( lexical_cast<test_t>("NAN(some string"), bad_lexical_cast );
BOOST_TEST(lexical_cast<std::string>( (boost::core::copysign)(std::numeric_limits<test_t >::infinity(), static_cast<test_t>(-1.0)))
== "-inf" );
BOOST_TEST(lexical_cast<std::string>( std::numeric_limits<test_t >::infinity()) == "inf" );
BOOST_TEST(lexical_cast<std::string>( std::numeric_limits<test_t >::quiet_NaN()) == "nan" );
#if !defined(__ia64__) && !defined(_M_IA64)
BOOST_TEST(lexical_cast<std::string>(
(boost::core::copysign)(std::numeric_limits<test_t >::quiet_NaN(), static_cast<test_t>(-1.0)))
== "-nan" );
#endif
#ifndef BOOST_LCAST_NO_WCHAR_T
BOOST_TEST( is_pos_inf( lexical_cast<test_t>(L"inf") ) );
BOOST_TEST( is_pos_inf( lexical_cast<test_t>(L"INF") ) );
BOOST_TEST( is_neg_inf( lexical_cast<test_t>(L"-inf") ) );
BOOST_TEST( is_neg_inf( lexical_cast<test_t>(L"-INF") ) );
BOOST_TEST( is_pos_inf( lexical_cast<test_t>(L"+inf") ) );
BOOST_TEST( is_pos_inf( lexical_cast<test_t>(L"+INF") ) );
BOOST_TEST( is_pos_inf( lexical_cast<test_t>(L"infinity") ) );
BOOST_TEST( is_pos_inf( lexical_cast<test_t>(L"INFINITY") ) );
BOOST_TEST( is_neg_inf( lexical_cast<test_t>(L"-infinity") ) );
BOOST_TEST( is_neg_inf( lexical_cast<test_t>(L"-INFINITY") ) );
BOOST_TEST( is_pos_inf( lexical_cast<test_t>(L"+infinity") ) );
BOOST_TEST( is_pos_inf( lexical_cast<test_t>(L"+INFINITY") ) );
BOOST_TEST( is_neg_inf( lexical_cast<test_t>(L"-infINIty") ) );
BOOST_TEST( is_neg_inf( lexical_cast<test_t>(L"-INFiniTY") ) );
BOOST_TEST( is_pos_inf( lexical_cast<test_t>(L"+inFINIty") ) );
BOOST_TEST( is_pos_inf( lexical_cast<test_t>(L"+INfinITY") ) );
BOOST_TEST( is_pos_nan( lexical_cast<test_t>(L"nan") ) );
BOOST_TEST( is_pos_nan( lexical_cast<test_t>(L"NAN") ) );
BOOST_TEST( is_neg_nan( lexical_cast<test_t>(L"-nan") ) );
BOOST_TEST( is_neg_nan( lexical_cast<test_t>(L"-NAN") ) );
BOOST_TEST( is_pos_nan( lexical_cast<test_t>(L"+nan") ) );
BOOST_TEST( is_pos_nan( lexical_cast<test_t>(L"+NAN") ) );
BOOST_TEST( is_pos_nan( lexical_cast<test_t>(L"nan()") ) );
BOOST_TEST( is_pos_nan( lexical_cast<test_t>(L"NAN(some string)") ) );
BOOST_TEST_THROWS( lexical_cast<test_t>(L"NAN(some string"), bad_lexical_cast );
BOOST_TEST(lexical_cast<std::wstring>( (boost::core::copysign)(std::numeric_limits<test_t >::infinity(), static_cast<test_t>(-1.0)))
== L"-inf" );
BOOST_TEST(lexical_cast<std::wstring>( std::numeric_limits<test_t >::infinity()) == L"inf" );
BOOST_TEST(lexical_cast<std::wstring>( std::numeric_limits<test_t >::quiet_NaN()) == L"nan" );
#if !defined(__ia64__) && !defined(_M_IA64)
BOOST_TEST(lexical_cast<std::wstring>(
(boost::core::copysign)(std::numeric_limits<test_t >::quiet_NaN(), static_cast<test_t>(-1.0)))
== L"-nan" );
#endif
#endif
}
void test_inf_nan_float()
{
test_inf_nan_templated<float >();
BOOST_TEST(is_pos_nan(lexical_cast<float>(std::numeric_limits<float>::quiet_NaN())));
BOOST_TEST(is_neg_nan(lexical_cast<float>(-std::numeric_limits<float>::quiet_NaN())));
BOOST_TEST(is_pos_inf(lexical_cast<float>(std::numeric_limits<float>::infinity())));
BOOST_TEST(is_neg_inf(lexical_cast<float>(-std::numeric_limits<float>::infinity())));
BOOST_TEST(is_pos_nan(lexical_cast<float>(std::numeric_limits<double>::quiet_NaN())));
BOOST_TEST(is_neg_nan(lexical_cast<float>(-std::numeric_limits<double>::quiet_NaN())));
BOOST_TEST(is_pos_inf(lexical_cast<float>(std::numeric_limits<double>::infinity())));
BOOST_TEST(is_neg_inf(lexical_cast<float>(-std::numeric_limits<double>::infinity())));
}
void test_inf_nan_double()
{
test_inf_nan_templated<double >();
BOOST_TEST(is_pos_nan(lexical_cast<double>(std::numeric_limits<float>::quiet_NaN())));
BOOST_TEST(is_neg_nan(lexical_cast<double>(-std::numeric_limits<float>::quiet_NaN())));
BOOST_TEST(is_pos_inf(lexical_cast<double>(std::numeric_limits<float>::infinity())));
BOOST_TEST(is_neg_inf(lexical_cast<double>(-std::numeric_limits<float>::infinity())));
BOOST_TEST(is_pos_nan(lexical_cast<double>(std::numeric_limits<double>::quiet_NaN())));
BOOST_TEST(is_neg_nan(lexical_cast<double>(-std::numeric_limits<double>::quiet_NaN())));
BOOST_TEST(is_pos_inf(lexical_cast<double>(std::numeric_limits<double>::infinity())));
BOOST_TEST(is_neg_inf(lexical_cast<double>(-std::numeric_limits<double>::infinity())));
BOOST_TEST(is_pos_nan(lexical_cast<double>(std::numeric_limits<long double>::quiet_NaN())));
BOOST_TEST(is_neg_nan(lexical_cast<double>(-std::numeric_limits<long double>::quiet_NaN())));
BOOST_TEST(is_pos_inf(lexical_cast<double>(std::numeric_limits<long double>::infinity())));
BOOST_TEST(is_neg_inf(lexical_cast<double>(-std::numeric_limits<long double>::infinity())));
}
void test_inf_nan_long_double()
{
// We do not run tests on compilers with bugs
#ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
test_inf_nan_templated<long double >();
#endif
BOOST_TEST(true);
}
template <class Integral>
void test_inf_nan_to_integral()
{
BOOST_TEST_THROWS(lexical_cast<Integral>(std::numeric_limits<float>::quiet_NaN()), boost::bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>(-std::numeric_limits<float>::quiet_NaN()), boost::bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>(std::numeric_limits<float>::infinity()), boost::bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>(-std::numeric_limits<float>::infinity()), boost::bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>(std::numeric_limits<double>::quiet_NaN()), boost::bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>(-std::numeric_limits<double>::quiet_NaN()), boost::bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>(std::numeric_limits<double>::infinity()), boost::bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>(-std::numeric_limits<double>::infinity()), boost::bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>(std::numeric_limits<long double>::quiet_NaN()), boost::bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>(-std::numeric_limits<long double>::quiet_NaN()), boost::bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>(std::numeric_limits<long double>::infinity()), boost::bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<Integral>(-std::numeric_limits<long double>::infinity()), boost::bad_lexical_cast);
}
int main()
{
test_inf_nan_float();
test_inf_nan_double();
test_inf_nan_long_double();
test_inf_nan_to_integral<int>();
test_inf_nan_to_integral<bool>();
test_inf_nan_to_integral<short>();
return boost::report_errors();
}
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Terje Sletteb and Kevlin Henney, 2005.
// Copyright Alexander Nasonov, 2006.
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
//
// Note: The unit test no longer compile on MSVC 6, but lexical_cast itself works for it.
//
// We need this #define before any #includes: otherwise msvc will emit warnings
// deep within std::string, resulting from our (perfectly legal) use of basic_string
// with a custom traits class:
//
#define _SCL_SECURE_NO_WARNINGS
#include <boost/cstdint.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/lexical_cast/detail/type_traits.hpp>
#include <boost/type_traits/integral_promotion.hpp>
#include <string>
#include <sstream>
#include <vector>
#include <memory>
#include <type_traits>
#include <boost/lexical_cast.hpp>
#if (defined(BOOST_HAS_LONG_LONG) || defined(BOOST_HAS_MS_INT64)) \
&& !(defined(BOOST_MSVC) && BOOST_MSVC < 1300)
#define LCAST_TEST_LONGLONG
#endif
#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
#define BOOST_LCAST_NO_WCHAR_T
#endif
// There's no typeinfo for unsigned __int128 in Xcode_15.0.1
#if defined(BOOST_HAS_INT128) && !defined(BOOST_LEXICAL_CAST_TEST_NO_128_INTS) && !defined(__APPLE__)
# define BOOST_LCAST_TEST_128 1
#endif
// Test all 65536 values if true:
bool const lcast_test_small_integral_types_completely = false;
// lcast_integral_test_counter: use when testing all values of an integral
// types is not possible. Max. portable value is 32767.
int const lcast_integral_test_counter=500;
using namespace boost;
template<class T, class CharT>
void test_conversion_from_integral_to_char(CharT zero)
{
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(0)) == zero + 0);
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(1)) == zero + 1);
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(2)) == zero + 2);
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(3)) == zero + 3);
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(4)) == zero + 4);
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(5)) == zero + 5);
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(6)) == zero + 6);
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(7)) == zero + 7);
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(8)) == zero + 8);
BOOST_TEST(lexical_cast<CharT>(static_cast<T>(9)) == zero + 9);
BOOST_TEST_THROWS(lexical_cast<CharT>(static_cast<T>(10)), bad_lexical_cast);
T t = (std::numeric_limits<T>::max)();
BOOST_TEST_THROWS(lexical_cast<CharT>(t), bad_lexical_cast);
}
template<class T, class CharT>
void test_conversion_from_char_to_integral(CharT zero)
{
BOOST_TEST(lexical_cast<T>( static_cast<CharT>(zero + 0)) == static_cast<T>(0) );
BOOST_TEST(lexical_cast<T>( static_cast<CharT>(zero + 1)) == static_cast<T>(1) );
BOOST_TEST(lexical_cast<T>( static_cast<CharT>(zero + 2)) == static_cast<T>(2) );
BOOST_TEST(lexical_cast<T>( static_cast<CharT>(zero + 3)) == static_cast<T>(3) );
BOOST_TEST(lexical_cast<T>( static_cast<CharT>(zero + 4)) == static_cast<T>(4) );
BOOST_TEST(lexical_cast<T>( static_cast<CharT>(zero + 5)) == static_cast<T>(5) );
BOOST_TEST(lexical_cast<T>( static_cast<CharT>(zero + 6)) == static_cast<T>(6) );
BOOST_TEST(lexical_cast<T>( static_cast<CharT>(zero + 7)) == static_cast<T>(7) );
BOOST_TEST(lexical_cast<T>( static_cast<CharT>(zero + 8)) == static_cast<T>(8) );
BOOST_TEST(lexical_cast<T>( static_cast<CharT>(zero + 9)) == static_cast<T>(9) );
BOOST_TEST_THROWS(lexical_cast<T>( static_cast<CharT>(zero + 10)), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>( static_cast<CharT>(zero - 1)), bad_lexical_cast);
}
template<class T>
void test_conversion_from_integral_to_integral()
{
T t = 0;
BOOST_TEST(lexical_cast<T>(t) == t);
// Next two variables are used to suppress warnings.
int st = 32767; unsigned int ut = st;
t = st;
BOOST_TEST(lexical_cast<short>(t) == st);
BOOST_TEST(lexical_cast<unsigned short>(t) == ut);
BOOST_TEST(lexical_cast<int>(t) == st);
BOOST_TEST(lexical_cast<unsigned int>(t) == ut);
BOOST_TEST(lexical_cast<long>(t) == st);
BOOST_TEST(lexical_cast<unsigned long>(t) == ut);
t = (std::numeric_limits<T>::max)();
BOOST_TEST(lexical_cast<T>(t) == t);
t = (std::numeric_limits<T>::min)();
BOOST_TEST(lexical_cast<T>(t) == t);
}
// Replace "-,999" with "-999".
template<class CharT>
std::basic_string<CharT> to_str_gcc_workaround(std::basic_string<CharT> str)
{
std::locale loc;
std::numpunct<CharT> const& np = BOOST_USE_FACET(std::numpunct<CharT>, loc);
std::ctype<CharT> const& ct = BOOST_USE_FACET(std::ctype<CharT>, loc);
if(np.grouping().empty())
return str;
CharT prefix[3] = { ct.widen('-'), np.thousands_sep(), CharT() };
if(str.find(prefix) != 0)
return str;
prefix[1] = CharT();
str.replace(0, 2, prefix);
return str;
}
template<class CharT, class T>
std::basic_string<CharT> to_str(T t)
{
std::basic_ostringstream<CharT> o;
o << t;
return to_str_gcc_workaround(o.str());
}
template<class T, class CharT>
void test_conversion_from_integral_to_string(CharT)
{
typedef std::numeric_limits<T> limits;
typedef std::basic_string<CharT> string_type;
T t;
t = (limits::min)();
BOOST_TEST(lexical_cast<string_type>(t) == to_str<CharT>(t));
t = (limits::max)();
BOOST_TEST(lexical_cast<string_type>(t) == to_str<CharT>(t));
if(limits::digits <= 16 && lcast_test_small_integral_types_completely)
// min and max have already been tested.
for(t = 1 + (limits::min)(); t != (limits::max)(); ++t)
BOOST_TEST(lexical_cast<string_type>(t) == to_str<CharT>(t));
else
{
T const min_val = (limits::min)();
T const max_val = (limits::max)();
T const half_max_val = max_val / 2;
T const cnt = lcast_integral_test_counter; // to suppress warnings
T const counter = cnt < half_max_val ? cnt : half_max_val;
T i = 0;
// Test values around min:
t = min_val;
for(i = 0; i < counter; ++i, ++t)
BOOST_TEST(lexical_cast<string_type>(t) == to_str<CharT>(t));
// Test values around max:
t = max_val;
for(i = 0; i < counter; ++i, --t)
BOOST_TEST(lexical_cast<string_type>(t) == to_str<CharT>(t));
// Test values around zero:
if(limits::is_signed)
for(t = static_cast<T>(-counter); t < static_cast<T>(counter); ++t)
BOOST_TEST(lexical_cast<string_type>(t) == to_str<CharT>(t));
// Test values around 100, 1000, 10000, ...
T ten_power = 100;
for(int e = 2; e < limits::digits10; ++e, ten_power *= 10)
{
// ten_power + 100 probably never overflows
for(t = ten_power - 100; t != ten_power + 100; ++t)
BOOST_TEST(lexical_cast<string_type>(t) == to_str<CharT>(t));
}
}
}
template<class T, class CharT>
void test_conversion_from_string_to_integral(CharT)
{
typedef std::numeric_limits<T> limits;
typedef std::basic_string<CharT> string_type;
string_type s;
string_type const zero = to_str<CharT>(0);
string_type const nine = to_str<CharT>(9);
T const min_val = (limits::min)();
T const max_val = (limits::max)();
s = to_str<CharT>(min_val);
BOOST_TEST_EQ(lexical_cast<T>(s), min_val);
if(limits::is_signed)
{
BOOST_TEST_THROWS(lexical_cast<T>(s + zero), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>(s + nine), bad_lexical_cast);
}
s = to_str<CharT>(max_val);
BOOST_TEST_EQ(lexical_cast<T>(s), max_val);
{
BOOST_TEST_THROWS(lexical_cast<T>(s + zero), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>(s + nine), bad_lexical_cast);
s = to_str<CharT>(max_val);
for (int i =1; i <=10; ++i) {
s[s.size()-1] += 1;
BOOST_TEST_THROWS(lexical_cast<T>( s ), bad_lexical_cast);
}
s = to_str<CharT>(max_val);
std::locale loc;
typedef std::numpunct<char> numpunct;
if ( BOOST_USE_FACET(numpunct, loc).grouping().empty() ) {
// Following tests work well for locale C
BOOST_TEST_EQ(lexical_cast<T>(to_str<CharT>(0)+s), max_val);
BOOST_TEST_EQ(lexical_cast<T>(to_str<CharT>(0)+to_str<CharT>(0)+s), max_val);
BOOST_TEST_EQ(lexical_cast<T>(to_str<CharT>(0)+to_str<CharT>(0)+to_str<CharT>(0)+s), max_val);
}
for (int i =1; i <=256; ++i) {
BOOST_TEST_THROWS(lexical_cast<T>( to_str<CharT>(i)+s ), bad_lexical_cast);
}
typedef typename boost::integral_promotion<T>::type promoted;
if ( !(std::is_same<T, promoted>::value) )
{
promoted prom = max_val;
s = to_str<CharT>(max_val);
for (int i =1; i <=256; ++i) {
BOOST_TEST_THROWS(lexical_cast<T>( to_str<CharT>(prom+i) ), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>( to_str<CharT>(i)+s ), bad_lexical_cast);
}
}
}
if(limits::digits <= 16 && lcast_test_small_integral_types_completely)
// min and max have already been tested.
for(T t = 1 + min_val; t != max_val; ++t)
BOOST_TEST(lexical_cast<T>(to_str<CharT>(t)) == t);
else
{
T const half_max_val = max_val / 2;
T const cnt = lcast_integral_test_counter; // to suppress warnings
T const counter = cnt < half_max_val ? cnt : half_max_val;
T t;
T i;
// Test values around min:
t = min_val;
for(i = 0; i < counter; ++i, ++t)
BOOST_TEST(lexical_cast<T>(to_str<CharT>(t)) == t);
// Test values around max:
t = max_val;
for(i = 0; i < counter; ++i, --t)
BOOST_TEST(lexical_cast<T>(to_str<CharT>(t)) == t);
// Test values around zero:
if(limits::is_signed)
for(t = static_cast<T>(-counter); t < static_cast<T>(counter); ++t)
BOOST_TEST(lexical_cast<T>(to_str<CharT>(t)) == t);
// Test values around 100, 1000, 10000, ...
T ten_power = 100;
for(int e = 2; e < limits::digits10; ++e, ten_power *= 10)
{
// ten_power + 100 probably never overflows
for(t = ten_power - 100; t != ten_power + 100; ++t)
BOOST_TEST(lexical_cast<T>(to_str<CharT>(t)) == t);
}
}
}
template<class T>
void test_conversion_from_to_integral_for_locale()
{
std::locale current_locale;
typedef std::numpunct<char> numpunct;
numpunct const& np = BOOST_USE_FACET(numpunct, current_locale);
if ( !np.grouping().empty() )
{
BOOST_TEST_THROWS(
lexical_cast<T>( std::string("100") + np.thousands_sep() + np.thousands_sep() + "0" )
, bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>( std::string("100") + np.thousands_sep() ), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>( np.thousands_sep() + std::string("100") ), bad_lexical_cast);
// Exception must not be thrown, when we are using no separators at all
BOOST_TEST( lexical_cast<T>("30000") == static_cast<T>(30000) );
}
test_conversion_from_integral_to_integral<T>();
// This is a part of test_conversion_from_integral_to_string<T>('0') method,
// but with BOOST_TEST_EQ instead of BOOST_TEST. It is required to see
// what is produced by the to_str<char>(t) method in situations when result
// is different. BOOST_TEST does not work with wchar_t.
typedef std::numeric_limits<T> limits;
T t = (limits::min)();
BOOST_TEST_EQ(lexical_cast<std::string>(t), to_str<char>(t));
test_conversion_from_integral_to_string<T>('0');
test_conversion_from_string_to_integral<T>('0');
#if !defined(BOOST_LCAST_NO_WCHAR_T)
if (lexical_cast<std::wstring>(t) != to_str<wchar_t>(t)) {
// Something went wrong, and now we are attempting to find and print the
// difference.
std::wstring wstr = to_str<wchar_t>(t);
std::string lcast_str = lexical_cast<std::string>(t);
std::string str;
str.reserve(wstr.size());
for (std::size_t i = 0; i < wstr.size(); ++i) {
str.push_back(static_cast<char>(wstr[i]));
}
BOOST_TEST_EQ(lcast_str.length(), lexical_cast<std::wstring>(t).length());
BOOST_TEST_EQ(to_str<char>(t), str);
BOOST_TEST_EQ(lcast_str, str);
}
test_conversion_from_integral_to_string<T>(L'0');
test_conversion_from_string_to_integral<T>(L'0');
#endif
}
struct restore_oldloc
{
std::locale oldloc;
~restore_oldloc() { std::locale::global(oldloc); }
};
template<class T>
void test_conversion_from_to_integral_minimal()
{
char const zero = '0';
signed char const szero = '0';
unsigned char const uzero = '0';
test_conversion_from_integral_to_char<T>(zero);
test_conversion_from_char_to_integral<T>(zero);
test_conversion_from_integral_to_char<T>(szero);
test_conversion_from_char_to_integral<T>(szero);
test_conversion_from_integral_to_char<T>(uzero);
test_conversion_from_char_to_integral<T>(uzero);
#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
wchar_t const wzero = L'0';
test_conversion_from_integral_to_char<T>(wzero);
test_conversion_from_char_to_integral<T>(wzero);
#endif
#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && !defined(_LIBCPP_VERSION) && !defined(BOOST_MSVC)
char16_t const u16zero = u'0';
test_conversion_from_integral_to_char<T>(u16zero);
test_conversion_from_char_to_integral<T>(u16zero);
#endif
#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && !defined(_LIBCPP_VERSION) && !defined(BOOST_MSVC)
char32_t const u32zero = u'0';
test_conversion_from_integral_to_char<T>(u32zero);
test_conversion_from_char_to_integral<T>(u32zero);
#endif
BOOST_TEST(lexical_cast<T>("-1") == static_cast<T>(-1));
BOOST_TEST(lexical_cast<T>("-9") == static_cast<T>(-9));
BOOST_TEST(lexical_cast<T>(-1) == static_cast<T>(-1));
BOOST_TEST(lexical_cast<T>(-9) == static_cast<T>(-9));
BOOST_TEST_THROWS(lexical_cast<T>("-1.0"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>("-9.0"), bad_lexical_cast);
BOOST_TEST(lexical_cast<T>(-1.0) == static_cast<T>(-1));
BOOST_TEST(lexical_cast<T>(-9.0) == static_cast<T>(-9));
BOOST_TEST(lexical_cast<T>(static_cast<T>(1)) == static_cast<T>(1));
BOOST_TEST(lexical_cast<T>(static_cast<T>(9)) == static_cast<T>(9));
BOOST_TEST_THROWS(lexical_cast<T>(1.1f), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>(1.1), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>(1.1L), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>(1.0001f), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>(1.0001), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>(1.0001L), bad_lexical_cast);
BOOST_TEST(lexical_cast<T>("+1") == static_cast<T>(1) );
BOOST_TEST(lexical_cast<T>("+9") == static_cast<T>(9) );
BOOST_TEST(lexical_cast<T>("+10") == static_cast<T>(10) );
BOOST_TEST(lexical_cast<T>("+90") == static_cast<T>(90) );
BOOST_TEST_THROWS(lexical_cast<T>("++1"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>("-+9"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>("--1"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>("+-9"), bad_lexical_cast);
// test_conversion_from_to_integral_for_locale
// Overflow test case from David W. Birdsall
std::string must_owerflow_str = (sizeof(T) < 16 ? "160000000000000000000" : "1600000000000000000000000000000000000000");
std::string must_owerflow_negative_str = (sizeof(T) < 16 ? "-160000000000000000000" : "-1600000000000000000000000000000000000000");
for (int i = 0; i < 15; ++i) {
BOOST_TEST_THROWS(lexical_cast<T>(must_owerflow_str), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<T>(must_owerflow_negative_str), bad_lexical_cast);
must_owerflow_str += '0';
must_owerflow_negative_str += '0';
}
}
template<class T>
void test_conversion_from_to_integral()
{
test_conversion_from_to_integral_minimal<T>();
typedef std::numpunct<char> numpunct;
restore_oldloc guard;
std::locale const& oldloc = guard.oldloc;
std::string grouping1 = BOOST_USE_FACET(numpunct, oldloc).grouping();
std::string grouping2(grouping1);
test_conversion_from_to_integral_for_locale<T>();
try
{
std::locale newloc("");
std::locale::global(newloc);
grouping2 = BOOST_USE_FACET(numpunct, newloc).grouping();
}
catch(std::exception const& ex)
{
std::string msg("Failed to set system locale: ");
msg += ex.what();
std::cerr << msg;
}
if(grouping1 != grouping2)
test_conversion_from_to_integral_for_locale<T>();
if(grouping1.empty() && grouping2.empty())
std::cerr << "Formatting with thousands_sep has not been tested";
}
void test_conversion_from_to_short()
{
test_conversion_from_to_integral<short>();
}
void test_conversion_from_to_ushort()
{
test_conversion_from_to_integral<unsigned short>();
}
void test_conversion_from_to_int()
{
test_conversion_from_to_integral<int>();
}
void test_conversion_from_to_uint()
{
test_conversion_from_to_integral<unsigned int>();
}
void test_conversion_from_to_long()
{
test_conversion_from_to_integral<long>();
}
void test_conversion_from_to_ulong()
{
test_conversion_from_to_integral<unsigned long>();
}
void test_conversion_from_to_intmax_t()
{
test_conversion_from_to_integral<boost::intmax_t>();
}
void test_conversion_from_to_uintmax_t()
{
test_conversion_from_to_integral<boost::uintmax_t>();
}
#if defined(BOOST_HAS_LONG_LONG)
void test_conversion_from_to_longlong()
{
test_conversion_from_to_integral<boost::long_long_type>();
}
void test_conversion_from_to_ulonglong()
{
test_conversion_from_to_integral<boost::ulong_long_type>();
}
#elif defined(BOOST_HAS_MS_INT64)
void test_conversion_from_to_longlong()
{
test_conversion_from_to_integral<__int64>();
}
void test_conversion_from_to_ulonglong()
{
test_conversion_from_to_integral<unsigned __int64>();
}
#endif
#ifdef BOOST_LCAST_TEST_128
template <bool Specialized, class T>
struct test_if_specialized {
static void test() {}
};
template <class T>
struct test_if_specialized<true, T> {
static void test() {
test_conversion_from_to_integral_minimal<T>();
}
};
void test_conversion_from_to_int128()
{
test_if_specialized<
std::numeric_limits<boost::int128_type>::is_specialized,
boost::int128_type
>::test();
}
void test_conversion_from_to_uint128()
{
test_if_specialized<
std::numeric_limits<boost::int128_type>::is_specialized,
boost::uint128_type
>::test();
}
#endif
template <typename SignedT>
void test_integral_conversions_on_min_max_impl()
{
typedef SignedT signed_t;
typedef typename boost::detail::lcast::make_unsigned<signed_t>::type unsigned_t;
typedef std::numeric_limits<signed_t> s_limits;
typedef std::numeric_limits<unsigned_t> uns_limits;
BOOST_TEST_EQ(lexical_cast<unsigned_t>((uns_limits::max)()), (uns_limits::max)());
BOOST_TEST_EQ(lexical_cast<unsigned_t>((uns_limits::min)()), (uns_limits::min)());
BOOST_TEST_EQ(lexical_cast<signed_t>((s_limits::max)()), (s_limits::max)());
BOOST_TEST_EQ(lexical_cast<signed_t>((uns_limits::min)()), static_cast<signed_t>((uns_limits::min)()));
BOOST_TEST_EQ(lexical_cast<unsigned_t>((s_limits::max)()), static_cast<unsigned_t>((s_limits::max)()));
BOOST_TEST_EQ(lexical_cast<unsigned_t>((s_limits::min)()), static_cast<unsigned_t>((s_limits::min)()));
}
void test_integral_conversions_on_min_max()
{
test_integral_conversions_on_min_max_impl<int>();
test_integral_conversions_on_min_max_impl<short>();
#ifdef _MSC_VER
test_integral_conversions_on_min_max_impl<long int>();
#if defined(BOOST_HAS_LONG_LONG)
test_integral_conversions_on_min_max_impl<boost::long_long_type>();
#elif defined(BOOST_HAS_MS_INT64)
test_integral_conversions_on_min_max_impl<__int64>();
#endif
#ifdef BOOST_LCAST_TEST_128
test_integral_conversions_on_min_max_impl<boost::int128_type>();
#endif
#endif
}
void test_negative_integral() {
// From https://github.com/boostorg/lexical_cast/issues/45
BOOST_TEST_EQ(boost::lexical_cast<int>("-6575543"), -6575543);
BOOST_TEST_EQ(boost::lexical_cast<int>(-6575543), -6575543);
BOOST_TEST_EQ(boost::lexical_cast<int>("+6575543"), +6575543);
BOOST_TEST_EQ(boost::lexical_cast<int>(6575543), 6575543);
if (sizeof(short) == 2 && CHAR_BIT == 8) {
BOOST_TEST_EQ(boost::lexical_cast<short>("-32768"), -32768);
BOOST_TEST_EQ(boost::lexical_cast<short>(-32768), -32768);
BOOST_TEST_EQ(boost::lexical_cast<unsigned short>("-32768"), 32768);
BOOST_TEST_EQ(boost::lexical_cast<unsigned short>(-32768), 32768);
BOOST_TEST_EQ(boost::lexical_cast<unsigned short>(65535), 65535);
BOOST_TEST_THROWS(boost::lexical_cast<unsigned short>(-65536), bad_lexical_cast);
BOOST_TEST_EQ(boost::lexical_cast<unsigned short>(-65535), 1);
BOOST_TEST_EQ(boost::lexical_cast<unsigned short>(-65534), 2);
BOOST_TEST_THROWS(boost::lexical_cast<short>(65535), bad_lexical_cast);
BOOST_TEST_THROWS(boost::lexical_cast<short>(-65536), bad_lexical_cast);
BOOST_TEST_THROWS(boost::lexical_cast<short>(-65535), bad_lexical_cast);
}
}
int main()
{
test_conversion_from_to_short();
test_conversion_from_to_ushort();
test_conversion_from_to_int();
test_conversion_from_to_uint();
test_conversion_from_to_long();
test_conversion_from_to_ulong();
test_conversion_from_to_intmax_t();
test_conversion_from_to_uintmax_t();
#ifdef LCAST_TEST_LONGLONG
test_conversion_from_to_longlong();
test_conversion_from_to_ulonglong();
#endif
#ifdef BOOST_LCAST_TEST_128
test_conversion_from_to_int128();
test_conversion_from_to_uint128();
#endif
test_integral_conversions_on_min_max();
test_negative_integral();
return boost::report_errors();
}
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Antony Polukhin, 2012-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <boost/range/iterator_range.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/lexical_cast.hpp>
using namespace boost;
#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
#define BOOST_LCAST_NO_WCHAR_T
#endif
#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && !defined(_LIBCPP_VERSION) && !defined(BOOST_MSVC)
#define BOOST_LC_RUNU16
#endif
#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && !defined(_LIBCPP_VERSION) && !defined(BOOST_MSVC)
#define BOOST_LC_RUNU32
#endif
struct class_with_user_defined_sream_operators {
int i;
operator int() const {
return i;
}
};
template <class CharT>
inline std::basic_istream<CharT>& operator >> (std::basic_istream<CharT>& istr, class_with_user_defined_sream_operators& rhs)
{
return istr >> rhs.i;
}
template <class RngT>
void do_test_iterator_range_impl(const RngT& rng)
{
BOOST_TEST_EQ(lexical_cast<int>(rng), 1);
BOOST_TEST_EQ(lexical_cast<int>(rng.begin(), rng.size()), 1);
BOOST_TEST_EQ(lexical_cast<unsigned int>(rng), 1u);
BOOST_TEST_EQ(lexical_cast<unsigned int>(rng.begin(), rng.size()), 1u);
BOOST_TEST_EQ(lexical_cast<short>(rng), 1);
BOOST_TEST_EQ(lexical_cast<short>(rng.begin(), rng.size()), 1);
BOOST_TEST_EQ(lexical_cast<unsigned short>(rng), 1u);
BOOST_TEST_EQ(lexical_cast<unsigned short>(rng.begin(), rng.size()), 1u);
BOOST_TEST_EQ(lexical_cast<long int>(rng), 1);
BOOST_TEST_EQ(lexical_cast<long int>(rng.begin(), rng.size()), 1);
BOOST_TEST_EQ(lexical_cast<unsigned long int>(rng), 1u);
BOOST_TEST_EQ(lexical_cast<unsigned long int>(rng.begin(), rng.size()), 1u);
#ifdef BOOST_STL_SUPPORTS_NEW_UNICODE_LOCALES
BOOST_TEST_EQ(lexical_cast<float>(rng), 1.0f);
BOOST_TEST_EQ(lexical_cast<float>(rng.begin(), rng.size()), 1.0f);
BOOST_TEST_EQ(lexical_cast<double>(rng), 1.0);
BOOST_TEST_EQ(lexical_cast<double>(rng.begin(), rng.size()), 1.0);
#ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
BOOST_TEST_EQ(lexical_cast<long double>(rng), 1.0L);
BOOST_TEST_EQ(lexical_cast<long double>(rng.begin(), rng.size()), 1.0L);
#endif
BOOST_TEST_EQ(lexical_cast<class_with_user_defined_sream_operators>(rng), 1);
#endif
#if defined(BOOST_HAS_LONG_LONG)
BOOST_TEST_EQ(lexical_cast<boost::ulong_long_type>(rng), 1u);
BOOST_TEST_EQ(lexical_cast<boost::ulong_long_type>(rng.begin(), rng.size()), 1u);
BOOST_TEST_EQ(lexical_cast<boost::long_long_type>(rng), 1);
BOOST_TEST_EQ(lexical_cast<boost::long_long_type>(rng.begin(), rng.size()), 1);
#elif defined(BOOST_HAS_MS_INT64)
BOOST_TEST_EQ(lexical_cast<unsigned __int64>(rng), 1u);
BOOST_TEST_EQ(lexical_cast<unsigned __int64>(rng.begin(), rng.size()), 1u);
BOOST_TEST_EQ(lexical_cast<__int64>(rng), 1);
BOOST_TEST_EQ(lexical_cast<__int64>(rng.begin(), rng.size()), 1);
#endif
}
template <class CharT>
void test_it_range_using_any_chars(CharT* one, CharT* eleven)
{
typedef CharT test_char_type;
// Zero terminated
iterator_range<test_char_type*> rng1(one, one + 1);
do_test_iterator_range_impl(rng1);
iterator_range<const test_char_type*> crng1(one, one + 1);
do_test_iterator_range_impl(crng1);
// Non zero terminated
iterator_range<test_char_type*> rng2(eleven, eleven + 1);
do_test_iterator_range_impl(rng2);
iterator_range<const test_char_type*> crng2(eleven, eleven + 1);
do_test_iterator_range_impl(crng2);
}
template <class CharT>
void test_it_range_using_char(CharT* one, CharT* eleven)
{
typedef CharT test_char_type;
iterator_range<test_char_type*> rng1(one, one + 1);
BOOST_TEST_EQ(lexical_cast<std::string>(rng1), "1");
iterator_range<const test_char_type*> crng1(one, one + 1);
BOOST_TEST_EQ(lexical_cast<std::string>(crng1), "1");
iterator_range<test_char_type*> rng2(eleven, eleven + 1);
BOOST_TEST_EQ(lexical_cast<std::string>(rng2), "1");
iterator_range<const test_char_type*> crng2(eleven, eleven + 1);
BOOST_TEST_EQ(lexical_cast<std::string>(crng2), "1");
BOOST_TEST_EQ(lexical_cast<float>(rng1), 1.0f);
BOOST_TEST_EQ(lexical_cast<double>(rng1), 1.0);
#ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
BOOST_TEST_EQ(lexical_cast<long double>(rng1), 1.0L);
#endif
BOOST_TEST_EQ(lexical_cast<class_with_user_defined_sream_operators>(rng1), 1);
BOOST_TEST_EQ(lexical_cast<float>(crng2), 1.0f);
BOOST_TEST_EQ(lexical_cast<double>(crng2), 1.0);
#ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
BOOST_TEST_EQ(lexical_cast<long double>(crng2), 1.0L);
#endif
BOOST_TEST_EQ(lexical_cast<class_with_user_defined_sream_operators>(crng2), 1);
#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(_LIBCPP_VERSION)
BOOST_TEST(lexical_cast<std::wstring>(rng1) == L"1");
BOOST_TEST(lexical_cast<std::wstring>(crng1) == L"1");
BOOST_TEST(lexical_cast<std::wstring>(rng2) == L"1");
BOOST_TEST(lexical_cast<std::wstring>(crng2) == L"1");
#endif
#if defined(BOOST_LC_RUNU16) && defined(BOOST_STL_SUPPORTS_NEW_UNICODE_LOCALES)
typedef std::basic_string<char16_t> my_char16_string;
BOOST_TEST(lexical_cast<my_char16_string>(rng1) == u"1");
BOOST_TEST(lexical_cast<my_char16_string>(crng1) == u"1");
BOOST_TEST(lexical_cast<my_char16_string>(rng2) == u"1");
BOOST_TEST(lexical_cast<my_char16_string>(crng2) == u"1");
#endif
#if defined(BOOST_LC_RUNU32) && defined(BOOST_STL_SUPPORTS_NEW_UNICODE_LOCALES)
typedef std::basic_string<char32_t> my_char32_string;
BOOST_TEST(lexical_cast<my_char32_string>(rng1) == U"1");
BOOST_TEST(lexical_cast<my_char32_string>(crng1) == U"1");
BOOST_TEST(lexical_cast<my_char32_string>(rng2) == U"1");
BOOST_TEST(lexical_cast<my_char32_string>(crng2) == U"1");
#endif
}
void test_char_iterator_ranges()
{
typedef char test_char_type;
test_char_type data1[] = "1";
test_char_type data2[] = "11";
test_it_range_using_any_chars(data1, data2);
test_it_range_using_char(data1, data2);
}
void test_unsigned_char_iterator_ranges()
{
typedef unsigned char test_char_type;
test_char_type data1[] = "1";
test_char_type data2[] = "11";
test_it_range_using_any_chars(data1, data2);
test_it_range_using_char(data1, data2);
}
void test_signed_char_iterator_ranges()
{
typedef signed char test_char_type;
test_char_type data1[] = "1";
test_char_type data2[] = "11";
test_it_range_using_any_chars(data1, data2);
test_it_range_using_char(data1, data2);
}
void test_wchar_iterator_ranges()
{
#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(_LIBCPP_VERSION)
typedef wchar_t test_char_type;
test_char_type data1[] = L"1";
test_char_type data2[] = L"11";
test_it_range_using_any_chars(data1, data2);
#endif
BOOST_TEST(true);
}
void test_char16_iterator_ranges()
{
#if defined(BOOST_LC_RUNU16)
typedef char16_t test_char_type;
test_char_type data1[] = u"1";
test_char_type data2[] = u"11";
test_it_range_using_any_chars(data1, data2);
#endif
BOOST_TEST(true);
}
void test_char32_iterator_ranges()
{
#if defined(BOOST_LC_RUNU32)
typedef char32_t test_char_type;
test_char_type data1[] = U"1";
test_char_type data2[] = U"11";
test_it_range_using_any_chars(data1, data2);
#endif
BOOST_TEST(true);
}
int main()
{
test_char_iterator_ranges();
test_unsigned_char_iterator_ranges();
test_signed_char_iterator_ranges();
test_wchar_iterator_ranges();
test_char16_iterator_ranges();
test_char32_iterator_ranges();
return boost::report_errors();
}
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// Copyright Kevlin Henney, 2000-2005.
// Copyright Alexander Nasonov, 2006-2010.
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// what: lexical_cast custom keyword cast
// who: contributed by Kevlin Henney,
// enhanced with contributions from Terje Slettebo,
// with additional fixes and suggestions from Gennaro Prota,
// Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
// Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
// Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
// when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2014
#ifndef BOOST_LEXICAL_CAST_LEXICAL_CAST_OLD_HPP
#define BOOST_LEXICAL_CAST_LEXICAL_CAST_OLD_HPP
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
#define BOOST_LCAST_NO_WCHAR_T
#endif
#include <climits>
#include <cstddef>
#include <string>
#include <cstring>
#include <cstdio>
#include <type_traits>
#include <boost/limits.hpp>
#include <boost/config/workaround.hpp>
#ifdef BOOST_NO_STRINGSTREAM
#include <strstream>
#else
#include <sstream>
#endif
#if defined(BOOST_USE_MODULES)
#undef BOOST_USE_MODULES
#endif
#include <boost/lexical_cast/detail/lcast_precision.hpp>
#include <boost/lexical_cast/bad_lexical_cast.hpp>
#include <boost/lexical_cast/detail/widest_char.hpp>
namespace boost {
namespace detail
{
// selectors for choosing stream character type
template<typename Type>
struct stream_char
{
typedef char type;
};
#ifndef BOOST_LCAST_NO_WCHAR_T
#ifndef BOOST_NO_INTRINSIC_WCHAR_T
template<>
struct stream_char<wchar_t>
{
typedef wchar_t type;
};
#endif
template<>
struct stream_char<wchar_t *>
{
typedef wchar_t type;
};
template<>
struct stream_char<const wchar_t *>
{
typedef wchar_t type;
};
template<>
struct stream_char<std::wstring>
{
typedef wchar_t type;
};
#endif
// stream wrapper for handling lexical conversions
template<typename Target, typename Source, typename Traits>
class lexical_stream
{
private:
typedef typename widest_char<
typename stream_char<Target>::type,
typename stream_char<Source>::type>::type char_type;
typedef Traits traits_type;
public:
lexical_stream(char_type* = 0, char_type* = 0)
{
stream.unsetf(std::ios::skipws);
lcast_set_precision(stream, static_cast<Source*>(0), static_cast<Target*>(0) );
}
~lexical_stream()
{
#if defined(BOOST_NO_STRINGSTREAM)
stream.freeze(false);
#endif
}
bool operator<<(const Source &input)
{
return !(stream << input).fail();
}
template<typename InputStreamable>
bool operator>>(InputStreamable &output)
{
return !std::is_pointer<InputStreamable>::value &&
stream >> output &&
stream.get() == traits_type::eof();
}
bool operator>>(std::string &output)
{
#if defined(BOOST_NO_STRINGSTREAM)
stream << '\0';
#endif
stream.str().swap(output);
return true;
}
#ifndef BOOST_LCAST_NO_WCHAR_T
bool operator>>(std::wstring &output)
{
stream.str().swap(output);
return true;
}
#endif
private:
#if defined(BOOST_NO_STRINGSTREAM)
std::strstream stream;
#elif defined(BOOST_NO_STD_LOCALE)
std::stringstream stream;
#else
std::basic_stringstream<char_type,traits_type> stream;
#endif
};
}
// call-by-value fallback version (deprecated)
template<typename Target, typename Source>
Target lexical_cast(Source arg)
{
typedef typename detail::widest_char<
typename detail::stream_char<Target>::type
, typename detail::stream_char<Source>::type
>::type char_type;
typedef std::char_traits<char_type> traits;
detail::lexical_stream<Target, Source, traits> interpreter;
Target result{};
if(!(interpreter << arg && interpreter >> result))
boost::conversion::detail::throw_bad_cast<Source, Target>();
return result;
}
} // namespace boost
#undef BOOST_LCAST_NO_WCHAR_T
#endif // BOOST_LEXICAL_CAST_LEXICAL_CAST_OLD_HPP
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Terje Sletteb and Kevlin Henney, 2005.
// Copyright Alexander Nasonov, 2006.
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
//
// Note: The unit test no longer compile on MSVC 6, but lexical_cast itself works for it.
//
// We need this #define before any #includes: otherwise msvc will emit warnings
// deep within std::string, resulting from our (perfectly legal) use of basic_string
// with a custom traits class:
//
#define _SCL_SECURE_NO_WARNINGS
#include <boost/cstdint.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/type_traits/integral_promotion.hpp>
#include <string>
#include <vector>
#include <algorithm> // std::transform
#include <memory>
#include <boost/lexical_cast.hpp>
#if (defined(BOOST_HAS_LONG_LONG) || defined(BOOST_HAS_MS_INT64)) \
&& !(defined(BOOST_MSVC) && BOOST_MSVC < 1300)
#define LCAST_TEST_LONGLONG
#endif
#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
#define BOOST_LCAST_NO_WCHAR_T
#endif
#ifndef BOOST_TEST_CLOSE_FRACTION
// Naiive, but works for tests in this file
#define BOOST_TEST_CLOSE_FRACTION(x, y, eps) BOOST_TEST(x - y + eps <= eps * 2)
#endif
template<class CharT>
struct my_traits : std::char_traits<CharT>
{
};
template<class CharT>
struct my_allocator : std::allocator<CharT>
{
typedef std::allocator<CharT> base_t;
my_allocator(){}
template <class U> my_allocator(const my_allocator<U>& v) : base_t(v) {}
template <class U> struct rebind { typedef my_allocator<U> other; };
};
using namespace boost;
void test_conversion_to_char()
{
BOOST_TEST_EQ('A', lexical_cast<char>('A'));
BOOST_TEST_EQ(' ', lexical_cast<char>(' '));
BOOST_TEST_EQ('1', lexical_cast<char>(1));
BOOST_TEST_EQ('0', lexical_cast<char>(0));
BOOST_TEST_THROWS(lexical_cast<char>(123), bad_lexical_cast);
BOOST_TEST_EQ('1', lexical_cast<char>(1.0));
BOOST_TEST_EQ('1', lexical_cast<char>(true));
BOOST_TEST_EQ('0', lexical_cast<char>(false));
BOOST_TEST_EQ('A', lexical_cast<char>("A"));
BOOST_TEST_EQ(' ', lexical_cast<char>(" "));
BOOST_TEST_THROWS(lexical_cast<char>(""), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<char>("Test"), bad_lexical_cast);
BOOST_TEST_EQ('A', lexical_cast<char>(std::string("A")));
BOOST_TEST_EQ(' ', lexical_cast<char>(std::string(" ")));
BOOST_TEST_THROWS(
lexical_cast<char>(std::string("")), bad_lexical_cast);
BOOST_TEST_THROWS(
lexical_cast<char>(std::string("Test")), bad_lexical_cast);
}
void test_conversion_to_int()
{
BOOST_TEST_EQ(1, lexical_cast<int>('1'));
BOOST_TEST_EQ(0, lexical_cast<int>('0'));
BOOST_TEST_THROWS(lexical_cast<int>('A'), bad_lexical_cast);
BOOST_TEST_EQ(1, lexical_cast<int>(1));
BOOST_TEST_EQ(1, lexical_cast<int>(1.0));
BOOST_TEST_EQ(
(std::numeric_limits<int>::max)(),
lexical_cast<int>((std::numeric_limits<int>::max)()));
BOOST_TEST_EQ(
(std::numeric_limits<int>::min)(),
lexical_cast<int>((std::numeric_limits<int>::min)()));
BOOST_TEST_THROWS(lexical_cast<int>(1.23), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<int>(1e20), bad_lexical_cast);
BOOST_TEST_EQ(1, lexical_cast<int>(true));
BOOST_TEST_EQ(0, lexical_cast<int>(false));
BOOST_TEST_EQ(123, lexical_cast<int>("123"));
BOOST_TEST_THROWS(
lexical_cast<int>(" 123"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<int>(""), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<int>("Test"), bad_lexical_cast);
BOOST_TEST_EQ(123, lexical_cast<int>("123"));
BOOST_TEST_EQ(123, lexical_cast<int>(std::string("123")));
BOOST_TEST_THROWS(
lexical_cast<int>(std::string(" 123")), bad_lexical_cast);
BOOST_TEST_THROWS(
lexical_cast<int>(std::string("")), bad_lexical_cast);
BOOST_TEST_THROWS(
lexical_cast<int>(std::string("Test")), bad_lexical_cast);
}
void test_conversion_with_nonconst_char()
{
std::vector<char> buffer;
buffer.push_back('1');
buffer.push_back('\0');
BOOST_TEST_EQ(boost::lexical_cast<int>(&buffer[0]), 1);
std::vector<unsigned char> buffer2;
buffer2.push_back('1');
buffer2.push_back('\0');
BOOST_TEST_EQ(boost::lexical_cast<int>(&buffer2[0]), 1);
std::vector<unsigned char> buffer3;
buffer3.push_back('1');
buffer3.push_back('\0');
BOOST_TEST_EQ(boost::lexical_cast<int>(&buffer3[0]), 1);
#ifndef BOOST_LCAST_NO_WCHAR_T
std::vector<wchar_t> buffer4;
buffer4.push_back(L'1');
buffer4.push_back(L'\0');
BOOST_TEST_EQ(boost::lexical_cast<int>(&buffer4[0]), 1);
#endif
}
void test_conversion_to_double()
{
BOOST_TEST_CLOSE_FRACTION(1.0, lexical_cast<double>('1'), (std::numeric_limits<double>::epsilon()));
BOOST_TEST_THROWS(lexical_cast<double>('A'), bad_lexical_cast);
BOOST_TEST_CLOSE_FRACTION(1.0, lexical_cast<double>(1), (std::numeric_limits<double>::epsilon()));
BOOST_TEST_CLOSE_FRACTION(1.23, lexical_cast<double>(1.23), (std::numeric_limits<double>::epsilon()));
BOOST_TEST_CLOSE_FRACTION(1.234567890, lexical_cast<double>(1.234567890), std::numeric_limits<double>::epsilon());
BOOST_TEST_CLOSE_FRACTION(1.234567890, lexical_cast<double>("1.234567890"), std::numeric_limits<double>::epsilon());
BOOST_TEST_CLOSE_FRACTION(1.0, lexical_cast<double>(true), (std::numeric_limits<double>::epsilon()));
BOOST_TEST_CLOSE_FRACTION(0.0, lexical_cast<double>(false), (std::numeric_limits<double>::epsilon()));
BOOST_TEST_CLOSE_FRACTION(1.23, lexical_cast<double>("1.23"), (std::numeric_limits<double>::epsilon()));
BOOST_TEST_THROWS(lexical_cast<double>(""), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<double>("Test"), bad_lexical_cast);
BOOST_TEST_CLOSE_FRACTION(1.23, lexical_cast<double>(std::string("1.23")), (std::numeric_limits<double>::epsilon()));
BOOST_TEST_THROWS(
lexical_cast<double>(std::string("")), bad_lexical_cast);
BOOST_TEST_THROWS(
lexical_cast<double>(std::string("Test")), bad_lexical_cast);
}
void test_conversion_to_bool()
{
BOOST_TEST_EQ(true, lexical_cast<bool>('1'));
BOOST_TEST_EQ(false, lexical_cast<bool>('0'));
BOOST_TEST_THROWS(lexical_cast<bool>('A'), bad_lexical_cast);
BOOST_TEST_EQ(true, lexical_cast<bool>(1));
BOOST_TEST_EQ(false, lexical_cast<bool>(0));
BOOST_TEST_THROWS(lexical_cast<bool>(123), bad_lexical_cast);
BOOST_TEST_EQ(true, lexical_cast<bool>(1.0));
BOOST_TEST_THROWS(lexical_cast<bool>(-123), bad_lexical_cast);
BOOST_TEST_EQ(false, lexical_cast<bool>(0.0));
BOOST_TEST_THROWS(lexical_cast<bool>(1234), bad_lexical_cast);
#if !defined(_CRAYC)
// Looks like a bug in CRAY compiler (throws bad_lexical_cast)
// TODO: localize the bug and report it to developers.
BOOST_TEST_EQ(true, lexical_cast<bool>(true));
BOOST_TEST_EQ(false, lexical_cast<bool>(false));
#endif
BOOST_TEST_EQ(true, lexical_cast<bool>("1"));
BOOST_TEST_EQ(false, lexical_cast<bool>("0"));
BOOST_TEST_THROWS(lexical_cast<bool>(""), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<bool>("Test"), bad_lexical_cast);
BOOST_TEST_EQ(true, lexical_cast<bool>("1"));
BOOST_TEST_EQ(false, lexical_cast<bool>("0"));
BOOST_TEST_EQ(true, lexical_cast<bool>(std::string("1")));
BOOST_TEST_EQ(false, lexical_cast<bool>(std::string("0")));
BOOST_TEST_THROWS(lexical_cast<bool>(1.0001L), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<bool>(2), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<bool>(2u), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<bool>(-1), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<bool>(-2), bad_lexical_cast);
BOOST_TEST_THROWS(
lexical_cast<bool>(std::string("")), bad_lexical_cast);
BOOST_TEST_THROWS(
lexical_cast<bool>(std::string("Test")), bad_lexical_cast);
BOOST_TEST(lexical_cast<bool>("+1") == true);
BOOST_TEST(lexical_cast<bool>("+0") == false);
BOOST_TEST(lexical_cast<bool>("-0") == false);
BOOST_TEST_THROWS(lexical_cast<bool>("--0"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<bool>("-+-0"), bad_lexical_cast);
BOOST_TEST(lexical_cast<bool>("0") == false);
BOOST_TEST(lexical_cast<bool>("1") == true);
BOOST_TEST(lexical_cast<bool>("00") == false);
BOOST_TEST(lexical_cast<bool>("00000000000") == false);
BOOST_TEST(lexical_cast<bool>("000000000001") == true);
BOOST_TEST(lexical_cast<bool>("+00") == false );
BOOST_TEST(lexical_cast<bool>("-00") == false );
BOOST_TEST(lexical_cast<bool>("+00000000001") == true );
BOOST_TEST_THROWS(lexical_cast<bool>("020"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<bool>("00200"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<bool>("-00200"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<bool>("+00200"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<bool>("000000000002"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<bool>("-1"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<bool>("-0000000001"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<bool>("00000000011"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<bool>("001001"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<bool>("-00000000010"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<bool>("-000000000100"), bad_lexical_cast);
}
void test_conversion_to_string()
{
char buf[] = "hello";
char* str = buf;
BOOST_TEST_EQ(str, lexical_cast<std::string>(str));
BOOST_TEST_EQ("A", lexical_cast<std::string>('A'));
BOOST_TEST_EQ(" ", lexical_cast<std::string>(' '));
BOOST_TEST_EQ("123", lexical_cast<std::string>(123));
BOOST_TEST_EQ("1.23", lexical_cast<std::string>(1.23));
BOOST_TEST_EQ("1.111111111", lexical_cast<std::string>(1.111111111));
BOOST_TEST_EQ("1", lexical_cast<std::string>(true));
BOOST_TEST_EQ("0", lexical_cast<std::string>(false));
BOOST_TEST_EQ("Test", lexical_cast<std::string>("Test"));
BOOST_TEST_EQ(" ", lexical_cast<std::string>(" "));
BOOST_TEST_EQ("", lexical_cast<std::string>(""));
BOOST_TEST_EQ("Test", lexical_cast<std::string>(std::string("Test")));
BOOST_TEST_EQ(" ", lexical_cast<std::string>(std::string(" ")));
BOOST_TEST_EQ("", lexical_cast<std::string>(std::string("")));
}
void test_conversion_from_to_wchar_t_alias()
{
BOOST_TEST_EQ(123u, lexical_cast<unsigned short>("123"));
BOOST_TEST_EQ(123u, lexical_cast<unsigned int>("123"));
BOOST_TEST_EQ(123u, lexical_cast<unsigned long>("123"));
BOOST_TEST_EQ(std::string("123"),
lexical_cast<std::string>(static_cast<unsigned short>(123)));
BOOST_TEST_EQ(std::string("123"), lexical_cast<std::string>(123u));
BOOST_TEST_EQ(std::string("123"), lexical_cast<std::string>(123ul));
}
void test_conversion_from_wchar_t()
{
#ifndef BOOST_LCAST_NO_WCHAR_T
#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
BOOST_TEST_EQ(1, lexical_cast<int>(L'1'));
BOOST_TEST_THROWS(lexical_cast<int>(L'A'), bad_lexical_cast);
#endif
BOOST_TEST_EQ(123, lexical_cast<int>(L"123"));
BOOST_TEST_THROWS(lexical_cast<int>(L""), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<int>(L"Test"), bad_lexical_cast);
#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
BOOST_TEST_EQ(1.0, lexical_cast<double>(L'1'));
BOOST_TEST_THROWS(lexical_cast<double>(L'A'), bad_lexical_cast);
#endif
BOOST_TEST_EQ(1.23, lexical_cast<double>(L"1.23"));
BOOST_TEST_THROWS(lexical_cast<double>(L""), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<double>(L"Test"), bad_lexical_cast);
#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
BOOST_TEST_EQ(true, lexical_cast<bool>(L'1'));
BOOST_TEST_EQ(false, lexical_cast<bool>(L'0'));
BOOST_TEST_THROWS(lexical_cast<bool>(L'A'), bad_lexical_cast);
#endif
BOOST_TEST_EQ(true, lexical_cast<bool>(L"1"));
BOOST_TEST_EQ(false, lexical_cast<bool>(L"0"));
BOOST_TEST_THROWS(lexical_cast<bool>(L""), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<bool>(L"Test"), bad_lexical_cast);
#endif
}
void test_conversion_to_wchar_t()
{
#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
BOOST_TEST(L'1' == lexical_cast<wchar_t>(1));
BOOST_TEST(L'0' == lexical_cast<wchar_t>(0));
BOOST_TEST(L'1' == lexical_cast<wchar_t>('1'));
BOOST_TEST(L'0' == lexical_cast<wchar_t>('0'));
BOOST_TEST_THROWS(lexical_cast<wchar_t>(123), bad_lexical_cast);
BOOST_TEST(L'1' == lexical_cast<wchar_t>(1.0));
BOOST_TEST(L'0' == lexical_cast<wchar_t>(0.0));
BOOST_TEST(L'1' == lexical_cast<wchar_t>(true));
BOOST_TEST(L'0' == lexical_cast<wchar_t>(false));
BOOST_TEST(L'A' == lexical_cast<wchar_t>(L'A'));
BOOST_TEST(L' ' == lexical_cast<wchar_t>(L' '));
BOOST_TEST(L'A' == lexical_cast<wchar_t>(L"A"));
BOOST_TEST(L' ' == lexical_cast<wchar_t>(L" "));
BOOST_TEST_THROWS(lexical_cast<wchar_t>(L""), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<wchar_t>(L"Test"), bad_lexical_cast);
BOOST_TEST(L'A' == lexical_cast<wchar_t>(std::wstring(L"A")));
BOOST_TEST(L' ' == lexical_cast<wchar_t>(std::wstring(L" ")));
BOOST_TEST_THROWS(
lexical_cast<wchar_t>(std::wstring(L"")), bad_lexical_cast);
BOOST_TEST_THROWS(
lexical_cast<wchar_t>(std::wstring(L"Test")), bad_lexical_cast);
#endif
BOOST_TEST(true);
}
void test_conversion_from_wstring()
{
#ifndef BOOST_LCAST_NO_WCHAR_T
BOOST_TEST_EQ(123, lexical_cast<int>(std::wstring(L"123")));
BOOST_TEST_THROWS(
lexical_cast<int>(std::wstring(L"")), bad_lexical_cast);
BOOST_TEST_THROWS(
lexical_cast<int>(std::wstring(L"Test")), bad_lexical_cast);
BOOST_TEST_EQ(true, lexical_cast<bool>(std::wstring(L"1")));
BOOST_TEST_EQ(false, lexical_cast<bool>(std::wstring(L"0")));
BOOST_TEST_THROWS(
lexical_cast<bool>(std::wstring(L"")), bad_lexical_cast);
BOOST_TEST_THROWS(
lexical_cast<bool>(std::wstring(L"Test")), bad_lexical_cast);
#endif
BOOST_TEST(true);
}
void test_conversion_to_wstring()
{
#ifndef BOOST_LCAST_NO_WCHAR_T
wchar_t buf[] = L"hello";
wchar_t* str = buf;
BOOST_TEST(str == lexical_cast<std::wstring>(str));
BOOST_TEST(L"123" == lexical_cast<std::wstring>(123));
BOOST_TEST(L"1.23" == lexical_cast<std::wstring>(1.23));
BOOST_TEST(L"1" == lexical_cast<std::wstring>(true));
BOOST_TEST(L"0" == lexical_cast<std::wstring>(false));
#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
BOOST_TEST(L"A" == lexical_cast<std::wstring>(L'A'));
BOOST_TEST(L" " == lexical_cast<std::wstring>(L' '));
BOOST_TEST(L"A" == lexical_cast<std::wstring>('A'));
#endif
BOOST_TEST(L"Test" == lexical_cast<std::wstring>(L"Test"));
BOOST_TEST(L" " == lexical_cast<std::wstring>(L" "));
BOOST_TEST(L"" == lexical_cast<std::wstring>(L""));
BOOST_TEST(L"Test" == lexical_cast<std::wstring>(std::wstring(L"Test")));
BOOST_TEST(L" " == lexical_cast<std::wstring>(std::wstring(L" ")));
BOOST_TEST(L"" == lexical_cast<std::wstring>(std::wstring(L"")));
#endif
BOOST_TEST(true);
}
void test_bad_lexical_cast()
{
try
{
lexical_cast<int>(std::string("Test"));
BOOST_TEST(false); // Exception expected
}
catch(const bad_lexical_cast &e)
{
BOOST_TEST(e.source_type() == typeid(std::string));
BOOST_TEST(e.target_type() == typeid(int));
}
}
void test_no_whitespace_stripping()
{
BOOST_TEST_THROWS(lexical_cast<int>(" 123"), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<int>("123 "), bad_lexical_cast);
}
void test_traits()
{
typedef std::basic_string<char, my_traits<char> > my_string;
my_string const s("s");
BOOST_TEST(boost::lexical_cast<char>(s) == s[0]);
BOOST_TEST(boost::lexical_cast<my_string>(s) == s);
BOOST_TEST(boost::lexical_cast<my_string>(-1) == "-1");
BOOST_TEST(boost::lexical_cast<int>(my_string("42")) == 42);
BOOST_TEST(boost::lexical_cast<double>(my_string("1.0")) == 1.0);
}
void test_wtraits()
{
typedef std::basic_string<wchar_t, my_traits<wchar_t> > my_string;
my_string const s(L"s");
BOOST_TEST(boost::lexical_cast<wchar_t>(s) == s[0]);
BOOST_TEST(boost::lexical_cast<my_string>(s) == s);
BOOST_TEST(boost::lexical_cast<my_string>(-1) == L"-1");
BOOST_TEST(boost::lexical_cast<int>(my_string(L"42")) == 42);
BOOST_TEST(boost::lexical_cast<double>(my_string(L"1.0")) == 1.0);
}
void test_allocator()
{
// Following test cause compilation error on MSVC2012:
// (Reason: cannot convert from 'std::_Wrap_alloc<_Alloc>' to 'const my_allocator<CharT>')
//
// MSVC developer is notified about this issue
#if !defined(_MSC_VER) || (_MSC_VER < 1700)
typedef std::basic_string< char
, std::char_traits<char>
, my_allocator<char>
> my_string;
my_string s("s");
BOOST_TEST(boost::lexical_cast<char>(s) == s[0]);
BOOST_TEST(boost::lexical_cast<std::string>(s) == "s");
BOOST_TEST(boost::lexical_cast<my_string>(s) == s);
BOOST_TEST(boost::lexical_cast<my_string>(1) == "1");
BOOST_TEST(boost::lexical_cast<my_string>("s") == s);
BOOST_TEST(boost::lexical_cast<my_string>(std::string("s")) == s);
#endif
}
void test_wallocator()
{
// Following test cause compilation error on MSVC2012:
// (Reason: cannot convert from 'std::_Wrap_alloc<_Alloc>' to 'const my_allocator<CharT>')
//
// MSVC developer is notified about this issue
#if !defined(_MSC_VER) || (_MSC_VER < 1700)
typedef std::basic_string< wchar_t
, std::char_traits<wchar_t>
, my_allocator<wchar_t>
> my_string;
my_string s(L"s");
BOOST_TEST(boost::lexical_cast<wchar_t>(s) == s[0]);
BOOST_TEST(boost::lexical_cast<std::wstring>(s) == L"s");
BOOST_TEST(boost::lexical_cast<my_string>(s) == s);
BOOST_TEST(boost::lexical_cast<my_string>(1) == L"1");
BOOST_TEST(boost::lexical_cast<my_string>(L"s") == s);
BOOST_TEST(boost::lexical_cast<my_string>(std::wstring(L"s")) == s);
#endif
}
void test_char_types_conversions()
{
const char c_arr[] = "Test array of chars";
const unsigned char uc_arr[] = "Test array of chars";
const signed char sc_arr[] = "Test array of chars";
BOOST_TEST(boost::lexical_cast<std::string>(c_arr) == std::string(c_arr));
BOOST_TEST(boost::lexical_cast<std::string>(uc_arr) == std::string(c_arr));
BOOST_TEST(boost::lexical_cast<std::string>(sc_arr) == std::string(c_arr));
BOOST_TEST(boost::lexical_cast<char>(c_arr[0]) == c_arr[0]);
BOOST_TEST(boost::lexical_cast<char>(uc_arr[0]) == c_arr[0]);
BOOST_TEST(boost::lexical_cast<char>(sc_arr[0]) == c_arr[0]);
BOOST_TEST(boost::lexical_cast<unsigned char>(c_arr[0]) == uc_arr[0]);
BOOST_TEST(boost::lexical_cast<unsigned char>(uc_arr[0]) == uc_arr[0]);
BOOST_TEST(boost::lexical_cast<unsigned char>(sc_arr[0]) == uc_arr[0]);
BOOST_TEST(boost::lexical_cast<signed char>(c_arr[0]) == sc_arr[0]);
BOOST_TEST(boost::lexical_cast<signed char>(uc_arr[0]) == sc_arr[0]);
BOOST_TEST(boost::lexical_cast<signed char>(sc_arr[0]) == sc_arr[0]);
#ifndef BOOST_LCAST_NO_WCHAR_T
const wchar_t wc_arr[]=L"Test array of chars";
BOOST_TEST(boost::lexical_cast<std::wstring>(wc_arr) == std::wstring(wc_arr));
BOOST_TEST(boost::lexical_cast<wchar_t>(wc_arr[0]) == wc_arr[0]);
#endif
}
struct foo_operators_test
{
foo_operators_test() : f(2) {}
int f;
};
template <typename OStream>
OStream& operator<<(OStream& ostr, const foo_operators_test& foo)
{
ostr << foo.f;
return ostr;
}
template <typename IStream>
IStream& operator>>(IStream& istr, foo_operators_test& foo)
{
istr >> foo.f;
return istr;
}
void operators_overload_test()
{
foo_operators_test foo;
BOOST_TEST_EQ(boost::lexical_cast<std::string>(foo), "2");
BOOST_TEST_EQ((boost::lexical_cast<foo_operators_test>("2")).f, 2);
// Must compile
(void)boost::lexical_cast<foo_operators_test>(foo);
}
void test_char16_conversions()
{
// There's no std::ctype<char16_t> in Xcode_15.0.1
#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && !defined(__APPLE__)
BOOST_TEST(u"100" == lexical_cast<std::u16string>(u"100"));
#if !defined(_LIBCPP_VERSION) // libc++ also does not have std::ctype<char16_t>
BOOST_TEST(u"1" == lexical_cast<std::u16string>(u'1'));
#endif
#endif
}
void test_char32_conversions()
{
// There's no std::ctype<char32_t> in Xcode_15.0.1
#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && !defined(__APPLE__)
BOOST_TEST(U"100" == lexical_cast<std::u32string>(U"100"));
#if !defined(_LIBCPP_VERSION) // libc++ also does not have std::ctype<char32_t>
BOOST_TEST(U"1" == lexical_cast<std::u32string>(U'1'));
#endif
#endif
}
void test_getting_pointer_to_function()
{
// Just checking that &lexical_cast<To, From> is not ambiguous
typedef char char_arr[4];
typedef int(*f1)(const char_arr&);
f1 p1 = &boost::lexical_cast<int, char_arr>;
BOOST_TEST(p1);
typedef int(*f2)(const std::string&);
f2 p2 = &boost::lexical_cast<int, std::string>;
BOOST_TEST(p2);
typedef std::string(*f3)(const int&);
f3 p3 = &boost::lexical_cast<std::string, int>;
BOOST_TEST(p3);
std::vector<int> values;
std::vector<std::string> ret;
std::transform(values.begin(), values.end(), ret.begin(), boost::lexical_cast<std::string, int>);
}
int main()
{
test_conversion_to_char();
test_conversion_to_int();
test_conversion_to_double();
test_conversion_to_bool();
test_conversion_from_to_wchar_t_alias();
test_conversion_to_string();
test_conversion_with_nonconst_char();
#ifndef BOOST_LCAST_NO_WCHAR_T
test_conversion_from_wchar_t();
test_conversion_to_wchar_t();
test_conversion_from_wstring();
test_conversion_to_wstring();
#endif
test_bad_lexical_cast();
test_no_whitespace_stripping();
test_traits();
test_wtraits();
test_allocator();
test_wallocator();
test_char_types_conversions();
operators_overload_test();
test_char16_conversions();
test_char32_conversions();
test_getting_pointer_to_function();
return boost::report_errors();
}
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Alexander Nasonov, 2006.
// Copyright Antony Polukhin, 2023-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
//
// Test round-tripping conversion FPT -> string -> FPT,
// where FPT is Floating Point Type.
#include <boost/core/lightweight_test.hpp>
#include <boost/lexical_cast.hpp>
#if (defined(__CYGWIN__) || defined(__FreeBSD__) || defined(__NetBSD__) \
|| (defined(__hppa) && !defined(__OpenBSD__)) || (defined(__NO_LONG_DOUBLE_MATH) && (DBL_MANT_DIG != LDBL_MANT_DIG))) \
|| defined(__MINGW64__)
# define BOOST_LEXICAL_CAST_NO_LONG_DOUBLE_MATH_FUNCTIONS
#endif
template<class T>
void test_round_conversion()
{
T epsilon = std::numeric_limits<T>::epsilon();
std::string const epsilon_s = boost::lexical_cast<std::string>(epsilon);
BOOST_TEST(epsilon == boost::lexical_cast<T>(epsilon_s));
T max_ = (std::numeric_limits<T>::max)();
std::string const max_s = boost::lexical_cast<std::string>(max_);
BOOST_TEST(max_ == boost::lexical_cast<T>(max_s));
T min_ = (std::numeric_limits<T>::min)();
std::string const min_s = boost::lexical_cast<std::string>(min_);
BOOST_TEST(min_ == boost::lexical_cast<T>(min_s));
T max_div137 = max_ / 137;
std::string max_div137_s = boost::lexical_cast<std::string>(max_div137);
BOOST_TEST(max_div137 == boost::lexical_cast<T>(max_div137_s));
T epsilon_mult137 = epsilon * 137;
std::string epsilon_mult137_s(boost::lexical_cast<std::string>(epsilon_mult137));
BOOST_TEST(epsilon_mult137 == boost::lexical_cast<T>(epsilon_mult137_s));
}
// See bug http://tinyurl.com/vhpvo
template<class T>
void test_msvc_magic_values()
{
T magic_msvc = 0.00010000433948393407;
std::string magic_msvc_s = boost::lexical_cast<std::string>(magic_msvc);
BOOST_TEST(magic_msvc == boost::lexical_cast<T>(magic_msvc_s));
}
void test_round_conversion_float()
{
test_round_conversion<float>();
}
void test_round_conversion_double()
{
test_round_conversion<double>();
test_msvc_magic_values<double>();
}
void test_round_conversion_long_double()
{
// We do not run tests on compilers and Standard Libraries with poor support of long double
#if !defined(BOOST_LEXICAL_CAST_NO_LONG_DOUBLE_MATH_FUNCTIONS)
test_round_conversion<long double>();
test_msvc_magic_values<long double>();
#endif
BOOST_TEST(true);
}
int main()
{
test_round_conversion_float();
test_round_conversion_double();
test_round_conversion_long_double();
return boost::report_errors();
}
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Antony Polukhin, 2012-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <boost/config.hpp>
#if defined(__INTEL_COMPILER)
#pragma warning(disable: 193 383 488 981 1418 1419)
#elif defined(BOOST_MSVC)
#pragma warning(disable: 4097 4100 4121 4127 4146 4244 4245 4511 4512 4701 4800)
#endif
#include <boost/core/lightweight_test.hpp>
#include <boost/range/iterator_range.hpp>
#include <cstdlib>
#if defined(BOOST_USE_MODULES)
#undef BOOST_USE_MODULES
#endif
#include <boost/lexical_cast.hpp>
#include "escape_struct.hpp"
#ifndef BOOST_NO_EXCEPTIONS
#error "This test must be compiled with -DBOOST_NO_EXCEPTIONS"
#endif
namespace boost {
BOOST_NORETURN void throw_exception(std::exception const & ) {
static int state = 0;
++ state;
EscapeStruct v("");
switch(state) {
case 1:
lexical_cast<char>(v); // should call boost::throw_exception
std::exit(1);
case 2:
lexical_cast<unsigned char>(v); // should call boost::throw_exception
std::exit(2);
}
std::exit(boost::report_errors());
}
}
void test_exceptions_off() {
using namespace boost;
EscapeStruct v("");
v = lexical_cast<EscapeStruct>(100);
BOOST_TEST_EQ(lexical_cast<int>(v), 100);
BOOST_TEST_EQ(lexical_cast<unsigned int>(v), 100u);
v = lexical_cast<EscapeStruct>(0.0);
BOOST_TEST_EQ(lexical_cast<double>(v), 0.0);
BOOST_TEST_EQ(lexical_cast<short>(100), 100);
BOOST_TEST_EQ(lexical_cast<float>(0.0), 0.0);
lexical_cast<short>(700000); // should call boost::throw_exception
BOOST_TEST(false);
}
int main() {
test_exceptions_off();
return boost::report_errors();
}
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Antony Polukhin, 2012-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <boost/core/lightweight_test.hpp>
#include <boost/range/iterator_range.hpp>
#include "escape_struct.hpp"
#include <vector>
#include <boost/lexical_cast.hpp>
using namespace boost;
// Testing compilation and some basic usage with BOOST_NO_STD_LOCALE
// Tests are mainly copyied from empty_input_test.cpp (something
// new added to test_empty_3)
#ifndef BOOST_NO_STD_LOCALE
#error "This test must be compiled with -DBOOST_NO_STD_LOCALE"
#endif
template <class T>
void do_test_on_empty_input(T& v)
{
BOOST_TEST_THROWS(lexical_cast<int>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<float>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<double>(v), bad_lexical_cast);
#ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
BOOST_TEST_THROWS(lexical_cast<long double>(v), bad_lexical_cast);
#endif
BOOST_TEST_THROWS(lexical_cast<unsigned int>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<unsigned short>(v), bad_lexical_cast);
#if defined(BOOST_HAS_LONG_LONG)
BOOST_TEST_THROWS(lexical_cast<boost::ulong_long_type>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<boost::long_long_type>(v), bad_lexical_cast);
#elif defined(BOOST_HAS_MS_INT64)
BOOST_TEST_THROWS(lexical_cast<unsigned __int64>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<__int64>(v), bad_lexical_cast);
#endif
}
void test_empty_1()
{
boost::iterator_range<char*> v;
do_test_on_empty_input(v);
BOOST_TEST_EQ(lexical_cast<std::string>(v), std::string());
BOOST_TEST_THROWS(lexical_cast<char>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<unsigned char>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<signed char>(v), bad_lexical_cast);
boost::iterator_range<const char*> cv;
do_test_on_empty_input(cv);
BOOST_TEST_EQ(lexical_cast<std::string>(cv), std::string());
BOOST_TEST_THROWS(lexical_cast<char>(cv), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<unsigned char>(cv), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<signed char>(cv), bad_lexical_cast);
const boost::iterator_range<const char*> ccv;
do_test_on_empty_input(ccv);
BOOST_TEST_EQ(lexical_cast<std::string>(ccv), std::string());
BOOST_TEST_THROWS(lexical_cast<char>(ccv), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<unsigned char>(ccv), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<signed char>(ccv), bad_lexical_cast);
}
void test_empty_2()
{
std::string v;
do_test_on_empty_input(v);
BOOST_TEST_THROWS(lexical_cast<char>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<unsigned char>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<signed char>(v), bad_lexical_cast);
}
void test_empty_3()
{
EscapeStruct v("");
do_test_on_empty_input(v);
BOOST_TEST_THROWS(lexical_cast<char>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<unsigned char>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<signed char>(v), bad_lexical_cast);
v = lexical_cast<EscapeStruct>(100);
BOOST_TEST_EQ(lexical_cast<int>(v), 100);
BOOST_TEST_EQ(lexical_cast<unsigned int>(v), 100u);
v = lexical_cast<EscapeStruct>(0.0);
BOOST_TEST_EQ(lexical_cast<double>(v), 0.0);
}
namespace std {
inline std::ostream & operator<<(std::ostream & out, const std::vector<long> & v)
{
std::ostream_iterator<long> it(out);
std::copy(v.begin(), v.end(), it);
BOOST_TEST(out);
return out;
}
}
void test_empty_4()
{
std::vector<long> v;
do_test_on_empty_input(v);
BOOST_TEST_THROWS(lexical_cast<char>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<unsigned char>(v), bad_lexical_cast);
BOOST_TEST_THROWS(lexical_cast<signed char>(v), bad_lexical_cast);
}
struct my_string {
friend std::ostream &operator<<(std::ostream& sout, my_string const&/* st*/) {
return sout << "";
}
};
void test_empty_5()
{
my_string st;
BOOST_TEST_EQ(boost::lexical_cast<std::string>(st), std::string());;
}
int main()
{
test_empty_1();
test_empty_2();
test_empty_3();
test_empty_4();
test_empty_5();
return boost::report_errors();
}
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Alexander Nasonov, 2007.
// Copyright Antony Polukhin, 2023-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
//
// Test that Source can be non-copyable.
#include <boost/core/noncopyable.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/lexical_cast.hpp>
class Noncopyable : private boost::noncopyable
{
public:
Noncopyable() {}
};
inline std::ostream &operator<<(std::ostream &out, const Noncopyable&)
{
return out << "Noncopyable";
}
void test_noncopyable()
{
Noncopyable x;
BOOST_TEST(boost::lexical_cast<std::string>(x) == "Noncopyable");
}
int main()
{
test_noncopyable();
return boost::report_errors();
}
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Antony Polukhin, 2012-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <boost/core/lightweight_test.hpp>
#include <sstream>
#include <boost/lexical_cast.hpp>
#if defined(BOOST_NO_STRINGSTREAM)
typedef std::strstream ss_t;
#else
typedef std::stringstream ss_t;
#endif
void test_void_pointers_conversions()
{
void *p_to_null = NULL;
const void *cp_to_data = "Some data";
char nonconst_data[5];
void *p_to_data = nonconst_data;
ss_t ss;
ss << p_to_null;
BOOST_TEST_EQ(boost::lexical_cast<std::string>(p_to_null), ss.str());
ss.str(std::string());
ss << cp_to_data;
BOOST_TEST_EQ(boost::lexical_cast<std::string>(cp_to_data), ss.str());
ss.str(std::string());
ss << p_to_data;
BOOST_TEST_EQ(boost::lexical_cast<std::string>(p_to_data), ss.str());
ss.str(std::string());
}
struct incomplete_type;
void test_incomplete_type_pointers_conversions()
{
incomplete_type *p_to_null = NULL;
const incomplete_type *cp_to_data = NULL;
char nonconst_data[5];
incomplete_type *p_to_data = reinterpret_cast<incomplete_type*>(nonconst_data);
ss_t ss;
ss << p_to_null;
BOOST_TEST_EQ(boost::lexical_cast<std::string>(p_to_null), ss.str());
ss.str(std::string());
ss << cp_to_data;
BOOST_TEST_EQ(boost::lexical_cast<std::string>(cp_to_data), ss.str());
ss.str(std::string());
ss << p_to_data;
BOOST_TEST_EQ(boost::lexical_cast<std::string>(p_to_data), ss.str());
ss.str(std::string());
}
struct ble;
typedef struct ble *meh;
std::ostream& operator <<(std::ostream &o, meh) {
o << "yay";
return o;
}
void test_inomplete_type_with_overloaded_ostream_op() {
meh heh = NULL;
ss_t ss;
ss << heh;
BOOST_TEST_EQ(boost::lexical_cast<std::string>(heh), ss.str());
}
int main()
{
test_void_pointers_conversions();
test_incomplete_type_pointers_conversions();
test_inomplete_type_with_overloaded_ostream_op();
return boost::report_errors();
}
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <boost/core/lightweight_test.hpp>
#include <iostream>
#include <type_traits>
#include <boost/lexical_cast.hpp>
///////////////////////// char streamable classes ///////////////////////////////////////////
struct streamable_easy { enum ENU {value = 0}; };
std::ostream& operator << (std::ostream& ostr, const streamable_easy&) {
return ostr << streamable_easy::value;
}
std::istream& operator >> (std::istream& istr, const streamable_easy&) {
int i; istr >> i; BOOST_TEST_EQ(i, streamable_easy::value);
return istr;
}
struct streamable_medium { enum ENU {value = 1}; };
template <class CharT>
typename std::enable_if<std::is_same<CharT, char>::value, std::basic_ostream<CharT>&>::type
operator << (std::basic_ostream<CharT>& ostr, const streamable_medium&) {
return ostr << streamable_medium::value;
}
template <class CharT>
typename std::enable_if<std::is_same<CharT, char>::value, std::basic_istream<CharT>&>::type
operator >> (std::basic_istream<CharT>& istr, const streamable_medium&) {
int i; istr >> i; BOOST_TEST_EQ(i, streamable_medium::value);
return istr;
}
struct streamable_hard { enum ENU {value = 2}; };
template <class CharT, class TraitsT>
typename std::enable_if<std::is_same<CharT, char>::value, std::basic_ostream<CharT, TraitsT>&>::type
operator << (std::basic_ostream<CharT, TraitsT>& ostr, const streamable_hard&) {
return ostr << streamable_hard::value;
}
template <class CharT, class TraitsT>
typename std::enable_if<std::is_same<CharT, char>::value, std::basic_istream<CharT, TraitsT>&>::type
operator >> (std::basic_istream<CharT, TraitsT>& istr, const streamable_hard&) {
int i; istr >> i; BOOST_TEST_EQ(i, streamable_hard::value);
return istr;
}
struct streamable_hard2 { enum ENU {value = 3}; };
template <class TraitsT>
std::basic_ostream<char, TraitsT>& operator << (std::basic_ostream<char, TraitsT>& ostr, const streamable_hard2&) {
return ostr << streamable_hard2::value;
}
template <class TraitsT>
std::basic_istream<char, TraitsT>& operator >> (std::basic_istream<char, TraitsT>& istr, const streamable_hard2&) {
int i; istr >> i; BOOST_TEST_EQ(i, streamable_hard2::value);
return istr;
}
///////////////////////// wchar_t streamable classes ///////////////////////////////////////////
struct wstreamable_easy { enum ENU {value = 4}; };
std::wostream& operator << (std::wostream& ostr, const wstreamable_easy&) {
return ostr << wstreamable_easy::value;
}
std::wistream& operator >> (std::wistream& istr, const wstreamable_easy&) {
int i; istr >> i; BOOST_TEST_EQ(i, wstreamable_easy::value);
return istr;
}
struct wstreamable_medium { enum ENU {value = 5}; };
template <class CharT>
typename std::enable_if<std::is_same<CharT, wchar_t>::value, std::basic_ostream<CharT>& >::type
operator << (std::basic_ostream<CharT>& ostr, const wstreamable_medium&) {
return ostr << wstreamable_medium::value;
}
template <class CharT>
typename std::enable_if<std::is_same<CharT, wchar_t>::value, std::basic_istream<CharT>& >::type
operator >> (std::basic_istream<CharT>& istr, const wstreamable_medium&) {
int i; istr >> i; BOOST_TEST_EQ(i, wstreamable_medium::value);
return istr;
}
struct wstreamable_hard { enum ENU {value = 6}; };
template <class CharT, class TraitsT>
typename std::enable_if<std::is_same<CharT, wchar_t>::value, std::basic_ostream<CharT, TraitsT>&>::type
operator << (std::basic_ostream<CharT, TraitsT>& ostr, const wstreamable_hard&) {
return ostr << wstreamable_hard::value;
}
template <class CharT, class TraitsT>
typename std::enable_if<std::is_same<CharT, wchar_t>::value, std::basic_istream<CharT, TraitsT>&>::type
operator >> (std::basic_istream<CharT, TraitsT>& istr, const wstreamable_hard&) {
int i; istr >> i; BOOST_TEST_EQ(i, wstreamable_hard::value);
return istr;
}
struct wstreamable_hard2 { enum ENU {value = 7}; };
template <class TraitsT>
std::basic_ostream<wchar_t, TraitsT>& operator << (std::basic_ostream<wchar_t, TraitsT>& ostr, const wstreamable_hard2&) {
return ostr << wstreamable_hard2::value;
}
template <class TraitsT>
std::basic_istream<wchar_t, TraitsT>& operator >> (std::basic_istream<wchar_t, TraitsT>& istr, const wstreamable_hard2&) {
int i; istr >> i; BOOST_TEST_EQ(i, wstreamable_hard2::value);
return istr;
}
///////////////////////// char and wchar_t streamable classes ///////////////////////////////////////////
struct bistreamable_easy { enum ENU {value = 8}; };
std::ostream& operator << (std::ostream& ostr, const bistreamable_easy&) {
return ostr << bistreamable_easy::value;
}
std::istream& operator >> (std::istream& istr, const bistreamable_easy&) {
int i; istr >> i; BOOST_TEST_EQ(i, bistreamable_easy::value);
return istr;
}
std::wostream& operator << (std::wostream& ostr, const bistreamable_easy&) {
return ostr << bistreamable_easy::value + 100;
}
std::wistream& operator >> (std::wistream& istr, const bistreamable_easy&) {
int i; istr >> i; BOOST_TEST_EQ(i, bistreamable_easy::value + 100);
return istr;
}
struct bistreamable_medium { enum ENU {value = 9}; };
template <class CharT>
std::basic_ostream<CharT>& operator << (std::basic_ostream<CharT>& ostr, const bistreamable_medium&) {
return ostr << bistreamable_medium::value + (sizeof(CharT) == 1 ? 0 : 100);
}
template <class CharT>
std::basic_istream<CharT>& operator >> (std::basic_istream<CharT>& istr, const bistreamable_medium&) {
int i; istr >> i; BOOST_TEST_EQ(i, bistreamable_medium::value + (sizeof(CharT) == 1 ? 0 : 100));
return istr;
}
struct bistreamable_hard { enum ENU {value = 10}; };
template <class CharT, class TraitsT>
std::basic_ostream<CharT, TraitsT>& operator << (std::basic_ostream<CharT, TraitsT>& ostr, const bistreamable_hard&) {
return ostr << bistreamable_hard::value + (sizeof(CharT) == 1 ? 0 : 100);
}
template <class CharT, class TraitsT>
std::basic_istream<CharT, TraitsT>& operator >> (std::basic_istream<CharT, TraitsT>& istr, const bistreamable_hard&) {
int i; istr >> i; BOOST_TEST_EQ(i, bistreamable_hard::value + (sizeof(CharT) == 1 ? 0 : 100));
return istr;
}
struct bistreamable_hard2 { enum ENU {value = 11}; };
template <class TraitsT>
std::basic_ostream<char, TraitsT>& operator << (std::basic_ostream<char, TraitsT>& ostr, const bistreamable_hard2&) {
return ostr << bistreamable_hard2::value;
}
template <class TraitsT>
std::basic_istream<char, TraitsT>& operator >> (std::basic_istream<char, TraitsT>& istr, const bistreamable_hard2&) {
int i; istr >> i; BOOST_TEST_EQ(i, bistreamable_hard2::value);
return istr;
}
template <class TraitsT>
std::basic_ostream<wchar_t, TraitsT>& operator << (std::basic_ostream<wchar_t, TraitsT>& ostr, const bistreamable_hard2&) {
return ostr << bistreamable_hard2::value + 100;
}
template <class TraitsT>
std::basic_istream<wchar_t, TraitsT>& operator >> (std::basic_istream<wchar_t, TraitsT>& istr, const bistreamable_hard2&) {
int i; istr >> i; BOOST_TEST_EQ(i, bistreamable_hard2::value + 100);
return istr;
}
template <class T>
static void test_ostr_impl() {
T streamable;
BOOST_TEST_EQ(T::value, boost::lexical_cast<int>(streamable));
BOOST_TEST_EQ(boost::lexical_cast<std::string>(T::value), boost::lexical_cast<std::string>(streamable));
}
template <class T>
static void test_wostr_impl() {
T streamable;
BOOST_TEST_EQ(T::value, boost::lexical_cast<int>(streamable));
// BOOST_TEST_EQ(boost::lexical_cast<std::string>(T::value), boost::lexical_cast<std::string>(streamable)); // Shall not compile???
BOOST_TEST(boost::lexical_cast<std::wstring>(T::value) == boost::lexical_cast<std::wstring>(streamable));
}
template <class T>
static void test_bistr_impl() {
T streamable;
BOOST_TEST_EQ(T::value, boost::lexical_cast<int>(streamable));
BOOST_TEST_EQ(boost::lexical_cast<std::string>(T::value), boost::lexical_cast<std::string>(streamable));
BOOST_TEST(boost::lexical_cast<std::wstring>(T::value + 100) == boost::lexical_cast<std::wstring>(streamable));
}
void test_ostream_character_detection() {
test_ostr_impl<streamable_easy>();
test_ostr_impl<streamable_medium>();
test_ostr_impl<streamable_hard>();
test_ostr_impl<streamable_hard2>();
test_wostr_impl<wstreamable_easy>();
test_wostr_impl<wstreamable_medium>();
test_wostr_impl<wstreamable_hard>();
test_wostr_impl<wstreamable_hard2>();
test_bistr_impl<bistreamable_easy>();
test_bistr_impl<bistreamable_medium>();
test_bistr_impl<bistreamable_hard>();
test_bistr_impl<bistreamable_hard2>();
}
template <class T>
static void test_istr_impl() {
boost::lexical_cast<T>(T::value);
boost::lexical_cast<T>(boost::lexical_cast<std::string>(T::value));
}
template <class T>
static void test_wistr_impl() {
boost::lexical_cast<T>(T::value);
//boost::lexical_cast<T>(boost::lexical_cast<std::string>(T::value)); // Shall not compile???
boost::lexical_cast<T>(boost::lexical_cast<std::wstring>(T::value));
}
template <class T>
static void test_bistr_instr_impl() {
boost::lexical_cast<T>(T::value);
boost::lexical_cast<T>(boost::lexical_cast<std::string>(T::value));
boost::lexical_cast<T>(boost::lexical_cast<std::wstring>(T::value + 100));
}
void test_istream_character_detection() {
test_istr_impl<streamable_easy>();
test_istr_impl<streamable_medium>();
test_istr_impl<streamable_hard>();
test_istr_impl<streamable_hard2>();
test_wistr_impl<wstreamable_easy>();
test_wistr_impl<wstreamable_medium>();
test_wistr_impl<wstreamable_hard>();
test_wistr_impl<wstreamable_hard2>();
test_bistr_instr_impl<bistreamable_easy>();
test_bistr_instr_impl<bistreamable_medium>();
test_bistr_instr_impl<bistreamable_hard>();
test_bistr_instr_impl<bistreamable_hard2>();
}
struct wistreamble_ostreamable { enum ENU {value = 200}; };
std::ostream& operator << (std::ostream& ostr, const wistreamble_ostreamable&) {
return ostr << wistreamble_ostreamable::value;
}
std::wistream& operator >> (std::wistream& istr, const wistreamble_ostreamable&) {
int i = 100;
istr >> i;
BOOST_TEST_EQ(i, wistreamble_ostreamable::value);
return istr;
}
struct istreamble_wostreamable { enum ENU {value = 201}; };
std::wostream& operator << (std::wostream& ostr, const istreamble_wostreamable&) {
return ostr << istreamble_wostreamable::value;
}
std::istream& operator >> (std::istream& istr, const istreamble_wostreamable&) {
int i; istr >> i; BOOST_TEST_EQ(i, istreamble_wostreamable::value);
return istr;
}
void test_mixed_stream_character_detection() {
//boost::lexical_cast<std::wstring>(std::string("qwe")); // TODO: ALLOW IT AS EXTENSION!
BOOST_TEST_EQ(boost::lexical_cast<int>(wistreamble_ostreamable::value), wistreamble_ostreamable::value);
boost::lexical_cast<wistreamble_ostreamable>(wistreamble_ostreamable::value);
BOOST_TEST_EQ(boost::lexical_cast<int>(wistreamble_ostreamable()), wistreamble_ostreamable::value);
boost::lexical_cast<istreamble_wostreamable>(istreamble_wostreamable::value);
BOOST_TEST_EQ(boost::lexical_cast<int>(istreamble_wostreamable()), istreamble_wostreamable::value);
}
int main()
{
test_ostream_character_detection();
test_istream_character_detection();
test_mixed_stream_character_detection();
return boost::report_errors();
}
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// Copyright Antony Polukhin, 2012-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#if defined(BOOST_USE_MODULES)
#undef BOOST_USE_MODULES
#endif
#include <boost/lexical_cast/detail/converter_lexical.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/array.hpp>
#include <boost/container/string.hpp>
#include <boost/range/iterator_range.hpp>
#include <boost/utility/string_view.hpp>
#include <type_traits>
template <class T>
struct is_optimized_stream : std::false_type {};
template <class CharT, class Traits, std::size_t CharacterBufferSize>
struct is_optimized_stream< boost::detail::lcast::optimized_src_stream<CharT, Traits, CharacterBufferSize> > : std::true_type {};
template <class Source, class Target>
static void assert_optimized_stream()
{
BOOST_TEST((is_optimized_stream<
typename boost::detail::lexical_converter_impl<Source, Target>::from_src_stream
>::value));
}
template <class T>
static void test_optimized_types_to_string_const()
{
namespace de = boost::detail;
typedef de::lexical_cast_stream_traits<T, std::string> trait_1;
BOOST_TEST((std::is_same<typename trait_1::src_char_t, char>::value));
BOOST_TEST((std::is_same<typename trait_1::target_char_t, char>::value));
BOOST_TEST((std::is_same<typename trait_1::char_type, char>::value));
assert_optimized_stream<T, std::string>();
assert_optimized_stream<T, boost::container::string>();
typedef de::lexical_cast_stream_traits<const T, std::string> trait_2;
BOOST_TEST((std::is_same<typename trait_2::src_char_t, char>::value));
BOOST_TEST((std::is_same<typename trait_2::target_char_t, char>::value));
BOOST_TEST((std::is_same<typename trait_2::char_type, char>::value));
typedef de::lexical_cast_stream_traits<T, std::wstring> trait_3;
BOOST_TEST((std::is_same<typename trait_3::src_char_t, char>::value));
BOOST_TEST((std::is_same<typename trait_3::target_char_t, wchar_t>::value));
BOOST_TEST((std::is_same<typename trait_3::char_type, wchar_t>::value));
assert_optimized_stream<T, std::wstring>();
assert_optimized_stream<T, boost::container::wstring>();
}
template <class T>
static void test_optimized_types_to_string()
{
test_optimized_types_to_string_const<T>();
namespace de = boost::detail;
typedef de::lexical_cast_stream_traits<std::string, T> trait_4;
BOOST_TEST((std::is_same<typename trait_4::src_char_t, char>::value));
BOOST_TEST((std::is_same<typename trait_4::target_char_t, char>::value));
BOOST_TEST((std::is_same<typename trait_4::char_type, char>::value));
assert_optimized_stream<std::string, T>();
typedef de::lexical_cast_stream_traits<const std::string, T> trait_5;
BOOST_TEST((std::is_same<typename trait_5::src_char_t, char>::value));
BOOST_TEST((std::is_same<typename trait_5::target_char_t, char>::value));
BOOST_TEST((std::is_same<typename trait_5::char_type, char>::value));
typedef de::lexical_cast_stream_traits<const std::wstring, T> trait_6;
BOOST_TEST((std::is_same<typename trait_6::src_char_t, wchar_t>::value));
BOOST_TEST((std::is_same<typename trait_6::target_char_t, char>::value));
BOOST_TEST((std::is_same<typename trait_6::char_type, wchar_t>::value));
}
template <class T>
static void test_optimized_types_to_x_string()
{
test_optimized_types_to_string<T>();
assert_optimized_stream<std::wstring, T>();
assert_optimized_stream<boost::container::wstring, T>();
}
template <class T>
static void test_optimized_types_to_wstring()
{
assert_optimized_stream<std::wstring, T>();
assert_optimized_stream<T, std::wstring>();
assert_optimized_stream<boost::container::wstring, T>();
assert_optimized_stream<T, boost::container::wstring>();
}
void test_metafunctions()
{
test_optimized_types_to_x_string<bool>();
test_optimized_types_to_x_string<char>();
test_optimized_types_to_x_string<unsigned char>();
test_optimized_types_to_x_string<signed char>();
test_optimized_types_to_x_string<short>();
test_optimized_types_to_x_string<unsigned short>();
test_optimized_types_to_x_string<int>();
test_optimized_types_to_x_string<unsigned int>();
test_optimized_types_to_x_string<long>();
test_optimized_types_to_x_string<unsigned long>();
#if defined(BOOST_HAS_LONG_LONG)
test_optimized_types_to_x_string<boost::ulong_long_type>();
test_optimized_types_to_x_string<boost::long_long_type>();
#elif defined(BOOST_HAS_MS_INT64)
test_optimized_types_to_x_string<unsigned __int64>();
test_optimized_types_to_x_string<__int64>();
#endif
test_optimized_types_to_string<float>();
test_optimized_types_to_string<double>();
test_optimized_types_to_string<long double>();
test_optimized_types_to_string<std::string>();
test_optimized_types_to_string<char*>();
//test_optimized_types_to_string<char[5]>();
//test_optimized_types_to_string<char[1]>();
test_optimized_types_to_string<unsigned char*>();
//test_optimized_types_to_string<unsigned char[5]>();
//test_optimized_types_to_string<unsigned char[1]>();
test_optimized_types_to_string<signed char*>();
//test_optimized_types_to_string<signed char[5]>();
//test_optimized_types_to_string<signed char[1]>();
test_optimized_types_to_string<boost::array<char, 1> >();
test_optimized_types_to_string<boost::array<char, 5> >();
test_optimized_types_to_string<boost::array<unsigned char, 1> >();
test_optimized_types_to_string<boost::array<unsigned char, 5> >();
test_optimized_types_to_string<boost::array<signed char, 1> >();
test_optimized_types_to_string<boost::array<signed char, 5> >();
test_optimized_types_to_string<boost::iterator_range<char*> >();
test_optimized_types_to_string<boost::iterator_range<unsigned char*> >();
test_optimized_types_to_string<boost::iterator_range<signed char*> >();
test_optimized_types_to_string_const<boost::array<const char, 1> >();
test_optimized_types_to_string_const<boost::array<const char, 5> >();
test_optimized_types_to_string_const<boost::array<const unsigned char, 1> >();
test_optimized_types_to_string_const<boost::array<const unsigned char, 5> >();
test_optimized_types_to_string_const<boost::array<const signed char, 1> >();
test_optimized_types_to_string_const<boost::array<const signed char, 5> >();
test_optimized_types_to_string_const<boost::iterator_range<const char*> >();
test_optimized_types_to_string_const<boost::iterator_range<const unsigned char*> >();
test_optimized_types_to_string_const<boost::iterator_range<const signed char*> >();
#ifndef BOOST_NO_CXX11_HDR_ARRAY
test_optimized_types_to_string<std::array<char, 1> >();
test_optimized_types_to_string<std::array<char, 5> >();
test_optimized_types_to_string<std::array<unsigned char, 1> >();
test_optimized_types_to_string<std::array<unsigned char, 5> >();
test_optimized_types_to_string<std::array<signed char, 1> >();
test_optimized_types_to_string<std::array<signed char, 5> >();
test_optimized_types_to_string_const<std::array<const char, 1> >();
test_optimized_types_to_string_const<std::array<const char, 5> >();
test_optimized_types_to_string_const<std::array<const unsigned char, 1> >();
test_optimized_types_to_string_const<std::array<const unsigned char, 5> >();
test_optimized_types_to_string_const<std::array<const signed char, 1> >();
test_optimized_types_to_string_const<std::array<const signed char, 5> >();
test_optimized_types_to_wstring<std::array<wchar_t, 42>>();
test_optimized_types_to_wstring<std::array<const wchar_t, 42>>();
#endif
test_optimized_types_to_wstring<wchar_t*>();
test_optimized_types_to_wstring<const wchar_t*>();
test_optimized_types_to_wstring<boost::iterator_range<const wchar_t*>>();
test_optimized_types_to_wstring<boost::iterator_range<wchar_t*>>();
test_optimized_types_to_string<boost::string_view>();
test_optimized_types_to_wstring<boost::basic_string_view<wchar_t>>();
#ifndef BOOST_NO_CXX17_HDR_STRING_VIEW
test_optimized_types_to_string<std::string_view>();
test_optimized_types_to_wstring<std::basic_string_view<wchar_t>>();
#endif
}
int main()
{
test_metafunctions();
return boost::report_errors();
}
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Antony Polukhin, 2012-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <boost/utility/string_view.hpp>
#ifndef BOOST_NO_CXX17_HDR_STRING_VIEW
#include <string_view>
#endif
#include <boost/core/lightweight_test.hpp>
#include <boost/lexical_cast.hpp>
template <class StringView>
void test_string_view_conversion() {
using boost::lexical_cast;
StringView sw = "1";
BOOST_TEST_EQ(lexical_cast<std::string>(sw), "1");
BOOST_TEST_EQ(lexical_cast<int>(sw), 1);
sw = StringView("a\0b", 3);
BOOST_TEST_EQ(lexical_cast<std::string>(sw), std::string("a\0b", 3));
sw = StringView("a\0b", 4);
BOOST_TEST_EQ(lexical_cast<std::string>(sw), std::string("a\0b", 4));
sw = StringView("\0a\0", 3);
BOOST_TEST_EQ(lexical_cast<std::string>(sw), std::string("\0a\0", 3));
}
int main() {
test_string_view_conversion<boost::string_view>();
#ifndef BOOST_NO_CXX17_HDR_STRING_VIEW
test_string_view_conversion<std::string_view>();
#endif
return boost::report_errors();
}
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// // Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Antony Polukhin, 2013-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <boost/lexical_cast.hpp>
int main()
{
boost::lexical_cast<char*>("Hello");
return 1;
}
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Antony Polukhin, 2014-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <boost/core/lightweight_test.hpp>
#include <boost/lexical_cast/try_lexical_convert.hpp>
using namespace boost::conversion;
void try_uncommon_cases()
{
std::string sres;
const bool res1 = try_lexical_convert(std::string("Test string"), sres);
BOOST_TEST(res1);
BOOST_TEST_EQ(sres, "Test string");
volatile int vires;
const bool res2 = try_lexical_convert(100, vires);
BOOST_TEST(res2);
BOOST_TEST_EQ(vires, 100);
const bool res3 = try_lexical_convert("Test string", sres);
BOOST_TEST(res3);
BOOST_TEST_EQ(sres, "Test string");
const bool res4 = try_lexical_convert("Test string", sizeof("Test string") - 1, sres);
BOOST_TEST(res4);
BOOST_TEST_EQ(sres, "Test string");
int ires;
BOOST_TEST(!try_lexical_convert("Test string", ires));
BOOST_TEST(!try_lexical_convert(1.1, ires));
BOOST_TEST(!try_lexical_convert(-1.9, ires));
BOOST_TEST(!try_lexical_convert("1.1", ires));
BOOST_TEST(!try_lexical_convert("1000000000000000000000000000000000000000", ires));
}
void try_common_cases()
{
int ires = 0;
const bool res1 = try_lexical_convert(std::string("100"), ires);
BOOST_TEST(res1);
BOOST_TEST_EQ(ires, 100);
ires = 0;
const bool res2 = try_lexical_convert("-100", ires);
BOOST_TEST(res2);
BOOST_TEST_EQ(ires, -100);
float fres = 1.0f;
const bool res3 = try_lexical_convert("0.0", fres);
BOOST_TEST(res3);
BOOST_TEST_EQ(fres, 0.0f);
fres = 1.0f;
const bool res4 = try_lexical_convert("0.0", sizeof("0.0") - 1, fres);
BOOST_TEST(res4);
BOOST_TEST_EQ(fres, 0.0f);
}
int main()
{
try_uncommon_cases();
try_common_cases();
return boost::report_errors();
}
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <boost/lexical_cast.hpp>
#include <boost/static_assert.hpp>
#include <boost/date_time/gregorian/gregorian.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>
void parseDate()
{
std::locale locale;
boost::date_time::format_date_parser<boost::gregorian::date, wchar_t> parser(L"", locale);
boost::date_time::special_values_parser<boost::gregorian::date, wchar_t> svp;
boost::gregorian::date date = parser.parse_date(L"", L"", svp);
(void)date;
}
int main()
{
parseDate();
return ::boost::lexical_cast<int>(L"1000") == 1000;
}
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <boost/lexical_cast.hpp>
#include <boost/core/lightweight_test.hpp>
void test_typedefed_wchar_t(unsigned short) // wchar_t is a typedef for unsigned short
{
BOOST_TEST(boost::lexical_cast<int>(L'A') == 65);
BOOST_TEST(boost::lexical_cast<int>(L'B') == 66);
BOOST_TEST(boost::lexical_cast<wchar_t>(L"65") == 65);
BOOST_TEST(boost::lexical_cast<wchar_t>(L"66") == 66);
}
template <class T>
void test_typedefed_wchar_t(T)
{
BOOST_TEST(1);
}
void test_typedefed_wchar_t_runtime()
{
test_typedefed_wchar_t(L'0');
}
void test_unsigned_short_to_wstring()
{
// Test case from https://github.com/boostorg/lexical_cast/issues/89
unsigned short number = 4550;
auto res1 = boost::lexical_cast<std::wstring>(number);
BOOST_TEST(res1 == L"4550");
auto res2 = boost::lexical_cast<std::string>(number);
BOOST_TEST_EQ(res2, "4550");
}
int main()
{
test_typedefed_wchar_t_runtime();
test_unsigned_short_to_wstring();
return boost::report_errors();
}
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Alexander Nasonov, 2007.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
//
// This tests now must pass on vc8, because lexical_cast
// implementation has changed and it does not use stringstream for casts
// to integral types
#include <boost/cstdint.hpp>
#include <boost/core/lightweight_test.hpp>
#include <string>
#include <sstream>
#include <boost/lexical_cast.hpp>
#ifdef BOOST_MSVC
# pragma warning(disable: 4127) // conditional expression is constant
#endif
using namespace boost;
// See also test_conversion_from_string_to_integral(CharT)
// in libs/conversion/lexical_cast_test.cpp
template<class T, class CharT>
void test_too_long_number(CharT zero)
{
typedef std::numeric_limits<T> limits;
std::basic_string<CharT> s;
std::basic_ostringstream<CharT> o;
o << (limits::max)() << zero;
s = o.str();
BOOST_TEST_THROWS(lexical_cast<T>(s), bad_lexical_cast);
s[s.size()-1] += static_cast<CharT>(9); // '0' -> '9'
BOOST_TEST_THROWS(lexical_cast<T>(s), bad_lexical_cast);
if (limits::is_signed)
{
std::basic_ostringstream<CharT> o2;
o2 << (limits::min)() << zero;
s = o2.str();
BOOST_TEST_THROWS(lexical_cast<T>(s), bad_lexical_cast);
s[s.size()-1] += static_cast<CharT>(9); // '0' -> '9'
BOOST_TEST_THROWS(lexical_cast<T>(s), bad_lexical_cast);
}
}
int main()
{
test_too_long_number<boost::intmax_t>('0');
test_too_long_number<boost::uintmax_t>('0');
#if !defined(BOOST_LCAST_NO_WCHAR_T)
test_too_long_number<boost::intmax_t>(L'0');
test_too_long_number<boost::uintmax_t>(L'0');
#endif
return boost::report_errors();
}
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// Unit test for boost::lexical_cast.
//
// See http://www.boost.org for most recent version, including documentation.
//
// Copyright Antony Polukhin, 2011-2026.
//
// Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
#include <boost/core/lightweight_test.hpp>
#include <boost/lexical_cast.hpp>
#if defined(BOOST_USE_MODULES)
#undef BOOST_USE_MODULES
#endif
#include <boost/lexical_cast/detail/lcast_char_constants.hpp>
#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
#define BOOST_LCAST_NO_WCHAR_T
#endif
template <class CharT>
void test_impl(const CharT* wc_arr)
{
typedef CharT wide_char;
typedef std::basic_string<CharT> wide_string;
const char c_arr[] = "Test array of chars";
const unsigned char uc_arr[] = "Test array of chars";
const signed char sc_arr[] = "Test array of chars";
// Following tests depend on realization of std::locale
// and pass for popular compilers and STL realizations
BOOST_TEST(boost::lexical_cast<wide_char>(c_arr[0]) == wc_arr[0]);
BOOST_TEST(boost::lexical_cast<wide_string>(c_arr) == wide_string(wc_arr));
BOOST_TEST(boost::lexical_cast<wide_string>(sc_arr) == wide_string(wc_arr) );
BOOST_TEST(boost::lexical_cast<wide_string>(uc_arr) == wide_string(wc_arr) );
BOOST_TEST(boost::lexical_cast<wide_char>(uc_arr[0]) == wc_arr[0]);
BOOST_TEST(boost::lexical_cast<wide_char>(sc_arr[0]) == wc_arr[0]);
}
void test_char_types_conversions_wchar_t()
{
#ifndef BOOST_LCAST_NO_WCHAR_T
test_impl(L"Test array of chars");
wchar_t c = boost::detail::lcast_char_constants<wchar_t>::zero;
BOOST_TEST(L'0' == c);
c = boost::detail::lcast_char_constants<wchar_t>::minus;
BOOST_TEST(L'-' == c);
c = boost::detail::lcast_char_constants<wchar_t>::plus;
BOOST_TEST(L'+' == c);
c = boost::detail::lcast_char_constants<wchar_t>::lowercase_e;
BOOST_TEST(L'e' == c);
c = boost::detail::lcast_char_constants<wchar_t>::capital_e;
BOOST_TEST(L'E' == c);
c = boost::detail::lcast_char_constants<wchar_t>::c_decimal_separator;
BOOST_TEST(L'.' == c);
#endif
BOOST_TEST(true);
}
void test_char_types_conversions_char16_t()
{
#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && defined(BOOST_STL_SUPPORTS_NEW_UNICODE_LOCALES)
test_impl(u"Test array of chars");
char16_t c = boost::detail::lcast_char_constants<char16_t>::zero;
BOOST_TEST(u'0' == c);
c = boost::detail::lcast_char_constants<char16_t>::minus;
BOOST_TEST(u'-' == c);
c = boost::detail::lcast_char_constants<char16_t>::plus;
BOOST_TEST(u'+' == c);
c = boost::detail::lcast_char_constants<char16_t>::lowercase_e;
BOOST_TEST(u'e' == c);
c = boost::detail::lcast_char_constants<char16_t>::capital_e;
BOOST_TEST(u'E' == c);
c = boost::detail::lcast_char_constants<char16_t>::c_decimal_separator;
BOOST_TEST(u'.' == c);
#endif
BOOST_TEST(true);
}
void test_char_types_conversions_char32_t()
{
#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && defined(BOOST_STL_SUPPORTS_NEW_UNICODE_LOCALES)
test_impl(U"Test array of chars");
char32_t c = boost::detail::lcast_char_constants<char32_t>::zero;
BOOST_TEST(U'0' == c);
c = boost::detail::lcast_char_constants<char32_t>::minus;
BOOST_TEST(U'-' == c);
c = boost::detail::lcast_char_constants<char32_t>::plus;
BOOST_TEST(U'+' == c);
c = boost::detail::lcast_char_constants<char32_t>::lowercase_e;
BOOST_TEST(U'e' == c);
c = boost::detail::lcast_char_constants<char32_t>::capital_e;
BOOST_TEST(U'E', == c);
c = boost::detail::lcast_char_constants<char32_t>::c_decimal_separator;
BOOST_TEST(U'.' == c);
#endif
BOOST_TEST(true);
}
int main()
{
test_char_types_conversions_wchar_t();
test_char_types_conversions_char16_t();
test_char_types_conversions_char32_t();
return boost::report_errors();
}