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3 Commits
| Author | SHA1 | Date | |
|---|---|---|---|
 nobody
|
fe3a3a91d0 | ||
|
nobody
|
66834ebe52 | ||
 Beman Dawes
|
0109740377 |
-88
@@ -1,88 +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 2014-2015.
|
||||
|
||||
#
|
||||
# See https://svn.boost.org/trac/boost/wiki/TravisCoverals for description of this file
|
||||
# and how it can be used with Boost libraries.
|
||||
#
|
||||
|
||||
language: cpp
|
||||
os:
|
||||
- linux
|
||||
|
||||
env:
|
||||
- CXX_STANDARD=c++98
|
||||
- CXX_STANDARD=c++0x
|
||||
|
||||
before_install:
|
||||
# Set this to the name of your Boost library
|
||||
# Autodetect library name by using the following code: - PROJECT_TO_TEST=$(basename $(pwd))
|
||||
- PROJECT_TO_TEST=$(basename $(pwd))
|
||||
|
||||
# Autodetect Boost branch by using the following code: - BRANCH_TO_TEST=`git rev-parse --abbrev-ref HEAD`
|
||||
# or by - BRANCH_TO_TEST=$TRAVIS_BRANCH or just directly specify it
|
||||
- BRANCH_TO_TEST=$TRAVIS_BRANCH
|
||||
|
||||
# Files, which coverage results must be ignored (files from other projects). Example: - IGNORE_COVERAGE=
|
||||
- IGNORE_COVERAGE=
|
||||
|
||||
|
||||
# From this point and below code is same for all the Boost libs
|
||||
# Cloning Boost libraries (fast nondeep cloning)
|
||||
- PROJECT_DIR=`pwd`
|
||||
- BOOST=$HOME/boost-local
|
||||
- git init $BOOST
|
||||
- cd $BOOST
|
||||
- git remote add --no-tags -t $BRANCH_TO_TEST origin https://github.com/boostorg/boost.git
|
||||
- git fetch --depth=1
|
||||
- git checkout $BRANCH_TO_TEST
|
||||
- git submodule update --init --merge
|
||||
- git remote set-branches --add origin $BRANCH_TO_TEST
|
||||
- git pull --recurse-submodules
|
||||
- git submodule update --init
|
||||
- git checkout $BRANCH_TO_TEST
|
||||
- git submodule foreach "git reset --quiet --hard; git clean -fxd"
|
||||
- git reset --hard; git clean -fxd
|
||||
- git status
|
||||
- rm -rf $BOOST/libs/$PROJECT_TO_TEST
|
||||
- mv $PROJECT_DIR/../$PROJECT_TO_TEST/ $BOOST/libs/$PROJECT_TO_TEST
|
||||
- PROJECT_DIR=$BOOST/libs/$PROJECT_TO_TEST
|
||||
- ./bootstrap.sh
|
||||
- ./b2 headers
|
||||
- sudo apt-get update -qq
|
||||
- sudo apt-get install -qq valgrind
|
||||
|
||||
script:
|
||||
- if [ "$CCFLAGS" != "" ]; then FLAGS="cxxflags=\"$CCFLAGS\" linkflags=\"$LINKFLAGS\""; else FLAGS=""; fi
|
||||
- cd $BOOST/libs/$PROJECT_TO_TEST/test/
|
||||
# `--coverage` flags required to generate coverage info for Coveralls
|
||||
- ../../../b2 testing.launcher=valgrind cxxflags="--coverage -std=$CXX_STANDARD" linkflags="--coverage"
|
||||
|
||||
after_success:
|
||||
# Copying Coveralls data to a separate folder
|
||||
- mkdir -p $PROJECT_DIR/coverals
|
||||
- find ../../../bin.v2/ -name "*.gcda" -exec cp "{}" $PROJECT_DIR/coverals/ \;
|
||||
- find ../../../bin.v2/ -name "*.gcno" -exec cp "{}" $PROJECT_DIR/coverals/ \;
|
||||
|
||||
# Preparing Coveralls data by
|
||||
# ... installing the tools
|
||||
- sudo apt-get install -qq python-yaml lcov
|
||||
# ... changind data format to a readable one
|
||||
- lcov --directory $PROJECT_DIR/coverals --base-directory ./ --capture --output-file $PROJECT_DIR/coverals/coverage.info
|
||||
|
||||
# ... erasing /test/ /example/ folder data
|
||||
- cd $BOOST
|
||||
- lcov --remove $PROJECT_DIR/coverals/coverage.info "/usr*" "*/$PROJECT_TO_TEST/test/*" $IGNORE_COVERAGE "*/$PROJECT_TO_TEST/tests/*" "*/$PROJECT_TO_TEST/examples/*" "*/$PROJECT_TO_TEST/example/*" -o $PROJECT_DIR/coverals/coverage.info
|
||||
|
||||
# ... erasing data that is not related to this project directly
|
||||
- OTHER_LIBS=`grep "submodule .*" .gitmodules | sed 's/\[submodule\ "\(.*\)"\]/"\*\/boost\/\1\.hpp" "\*\/boost\/\1\/\*"/g'| sed "/\"\*\/boost\/$PROJECT_TO_TEST\/\*\"/d" | sed ':a;N;$!ba;s/\n/ /g'`
|
||||
- echo $OTHER_LIBS
|
||||
- eval "lcov --remove $PROJECT_DIR/coverals/coverage.info $OTHER_LIBS -o $PROJECT_DIR/coverals/coverage.info"
|
||||
|
||||
# Sending data to Coveralls
|
||||
- cd $PROJECT_DIR
|
||||
- gem install coveralls-lcov
|
||||
- coveralls-lcov coverals/coverage.info
|
||||
@@ -1,16 +0,0 @@
|
||||
#[Boost.Conversion](http://boost.org/libs/conversion)
|
||||
Boost.Conversion is one of the [Boost C++ Libraries](http://github.com/boostorg). This library improves program safety and clarity by performing otherwise messy conversions.
|
||||
|
||||
### Test results
|
||||
|
||||
@ | Build | Tests coverage | More info
|
||||
----------------|-------------- | -------------- |-----------
|
||||
Develop branch: | [](https://travis-ci.org/apolukhin/conversion) | [](https://coveralls.io/r/apolukhin/conversion?branch=develop) | [details...](http://www.boost.org/development/tests/develop/developer/conversion.html)
|
||||
Master branch: | [](https://travis-ci.org/apolukhin/conversion) | [](https://coveralls.io/r/apolukhin/conversion?branch=master) | [details...](http://www.boost.org/development/tests/master/developer/conversion.html)
|
||||
|
||||
|
||||
[Open Issues](https://svn.boost.org/trac/boost/query?status=!closed&component=conversion&or&status=!closed&component=lexical_cast)
|
||||
|
||||
### License
|
||||
|
||||
Distributed under the [Boost Software License, Version 1.0](http://boost.org/LICENSE_1_0.txt).
|
||||
@@ -1,196 +0,0 @@
|
||||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
<meta name="generator" content=
|
||||
"Microsoft FrontPage 5.0">
|
||||
<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/polymorphic_cast.hpp Documentation</title>
|
||||
<style>
|
||||
.copyright
|
||||
{
|
||||
color: #666666;
|
||||
font-size: small;
|
||||
}
|
||||
</style>
|
||||
</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/polymorphic_cast.hpp">boost/polymorphic_cast.hpp</a></h1>
|
||||
|
||||
<h2><a name="Cast Functions">Cast Functions</a></h2>
|
||||
|
||||
<p>The header <a href="../../boost/polymorphic_cast.hpp">boost/polymorphic_cast.hpp</a> provides
|
||||
<code><a href="#Polymorphic_cast">polymorphic_cast</a></code> and
|
||||
<code><a href="#Polymorphic_cast">polymorphic_downcast</a></code>
|
||||
function templates designed to complement the C++ built-in casts.</p> <p>The header <a href="../../boost/polymorphic_pointer_cast.hpp">boost/polymorphic_pointer_cast.hpp</a> provides
|
||||
<code><a href="#Polymorphic_cast">polymorphic_pointer_cast</a></code> and
|
||||
<code><a href="#Polymorphic_cast">polymorphic_pointer_downcast</a></code> function templates.
|
||||
|
||||
<p>The program <a href="test/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 <code>Y</code> 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 <code>static_cast</code> 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 <code>polymorphic_downcast</code> template retains
|
||||
the efficiency of <code>static_cast</code> for non-debug compilations, but for
|
||||
debug compilations adds safety via an assert() that a <code>dynamic_cast</code>
|
||||
succeeds.</p>
|
||||
|
||||
<p>The C++ built-in <code>dynamic_cast</code> 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 <code>dynamic_cast</code>, which
|
||||
works on references, can be used on pointers through the ugly expression
|
||||
&<code>dynamic_cast<T&>(*p)</code>, which causes undefined
|
||||
behavior if <code>p</code> is <code>0</code>. The <code>polymorphic_cast</code>
|
||||
template performs a <code>dynamic_cast</code> on a pointer, and throws an
|
||||
exception if the <code>dynamic_cast</code> returns 0.</p>
|
||||
|
||||
<p>A <code>polymorphic_downcast</code> should be used for
|
||||
downcasts that you are certain should succeed. Error checking is
|
||||
only performed in translation units where <code>NDEBUG</code> is
|
||||
not defined, via
|
||||
<pre> assert( dynamic_cast<Derived>(x) == x )
|
||||
</pre> where <code>x</code> is the source pointer. This approach
|
||||
ensures that not only is a non-zero pointer returned, but also
|
||||
that it is correct in the presence of multiple inheritance.
|
||||
Attempts to crosscast using <code>polymorphic_downcast</code> will
|
||||
fail to compile.
|
||||
<b>Warning:</b> Because <code>polymorphic_downcast</code> uses assert(), it
|
||||
violates the One Definition Rule (ODR) if NDEBUG is inconsistently
|
||||
defined across translation units. [See ISO Std 3.2]
|
||||
<p>
|
||||
For crosscasts, or when the success of a cast can only be known at
|
||||
runtime, or when efficiency is not important,
|
||||
<code>polymorphic_cast</code> is preferred. </p>
|
||||
|
||||
<p>The C++ built-in <code>dynamic_cast</code> 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>
|
||||
|
||||
<p>While <code>polymorphic_downcast</code> and <code>polymorphic_cast</code> work with built-in pointer types only,
|
||||
<code>polymorphic_pointer_downcast</code> and <code>polymorphic_pointer_cast</code> are more generic versions
|
||||
with support for any pointer type for which the following expressions would be valid:<br><br>
|
||||
|
||||
<p> For <code>polymorphic_pointer_downcast</code>:</p>
|
||||
<code> static_pointer_cast<Derived>(p);<br> dynamic_pointer_cast<Derived>(p);</code><br><br>
|
||||
|
||||
<p> For <code>polymorphic_pointer_cast</code>:</p>
|
||||
<code> dynamic_pointer_cast<Derived>(p);<br> !p; // conversion to bool with negation</code><br><br>
|
||||
<p>This includes C++ built-in pointers, <code>std::shared_ptr, boost::shared_ptr, boost::intrusive_ptr</code>, etc.</p>
|
||||
|
||||
<h3>polymorphic_cast, polymorphic_downcast, polymorphic_pointer_cast and polymorphic_pointer_downcast synopsis</h3>
|
||||
|
||||
<blockquote>
|
||||
<pre>namespace boost {
|
||||
|
||||
template <class Derived, class Base>
|
||||
inline Derived polymorphic_cast(Base* x);
|
||||
// Throws: std::bad_cast if ( dynamic_cast<Derived>(x) == 0 )
|
||||
// Returns: dynamic_cast<Derived>(x)
|
||||
|
||||
template <class Derived, class Base>
|
||||
inline Derived polymorphic_downcast(Base* x);
|
||||
// Effects: assert( dynamic_cast<Derived>(x) == x );
|
||||
// Returns: static_cast<Derived>(x)
|
||||
|
||||
template <class Derived, class Base>
|
||||
inline auto polymorphic_pointer_cast(Base x);
|
||||
// Throws: std::bad_cast if ( dynamic_pointer_cast<Derived>(x) == 0 )
|
||||
// Returns: dynamic_pointer_cast<Derived>(x)
|
||||
|
||||
template <class Derived, class Base>
|
||||
inline auto polymorphic_pointer_downcast(Base x);
|
||||
// Effects: assert( dynamic_pointer_cast<Derived>(x) == x );
|
||||
// Returns: static_pointer_cast<Derived>(x)
|
||||
|
||||
}
|
||||
</pre>
|
||||
</blockquote>
|
||||
|
||||
<h3>polymorphic_downcast example</h3>
|
||||
|
||||
<blockquote>
|
||||
<pre>#include <boost/polymorphic_cast.hpp>
|
||||
...
|
||||
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<Banana*>(fruit);
|
||||
...
|
||||
</pre>
|
||||
</blockquote>
|
||||
|
||||
<h3>polymorphic_pointer_downcast example</h3>
|
||||
|
||||
<blockquote>
|
||||
<pre>#include <boost/polymorphic_pointer_cast.hpp>
|
||||
|
||||
class Fruit { public: virtual ~Fruit(){} };
|
||||
class Banana : public Fruit {};
|
||||
|
||||
// use one of these:
|
||||
|
||||
typedef Fruit* FruitPtr;
|
||||
typedef std::shared_ptr<Fruit> FruitPtr;
|
||||
typedef boost::shared_ptr<Fruit> FruitPtr;
|
||||
typedef boost::intrusive_ptr<Fruit> FruitPtr;
|
||||
|
||||
void f(FruitPtr fruit)
|
||||
{
|
||||
// ... logic which leads us to believe it is a banana
|
||||
auto banana = boost::polymorphic_pointer_downcast<Banana>(fruit);
|
||||
...
|
||||
}
|
||||
</pre>
|
||||
</blockquote>
|
||||
|
||||
<h3>History</h3>
|
||||
|
||||
<p><code>polymorphic_cast</code> was suggested by Bjarne Stroustrup in "The C++
|
||||
Programming Language".<br>
|
||||
<code>polymorphic_downcast</code> was contributed by <a href=
|
||||
"http://www.boost.org/people/dave_abrahams.htm">Dave Abrahams</a>.<br>
|
||||
<code>polymorphic_pointer_downcast</code> was contributed by <a href=
|
||||
"http://www.boost.org/people/boris_rasin.htm">Boris Rasin</a> and
|
||||
<code>polymorphic_pointer_cast</code> by Antony Polukhin.<br>
|
||||
An old
|
||||
<code>numeric_cast</code> that was contributed by <a href=
|
||||
"http://www.boost.org/people/kevlin_henney.htm">Kevlin Henney</a> is now superseeded by the <a href="../numeric/conversion/doc/html/index.html">Boost Numeric Conversion Library</a></p>
|
||||
<hr>
|
||||
|
||||
<p>Revised
|
||||
<!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan
|
||||
-->June 23, 2005<!--webbot bot="Timestamp" endspan i-checksum="30348"
|
||||
--></p>
|
||||
|
||||
<p class="copyright">© Copyright boost.org 1999.
|
||||
Distributed under the Boost Software License, Version 1.0. (See accompanying
|
||||
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</a>)
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
@@ -0,0 +1,257 @@
|
||||
// boost cast.hpp header file ----------------------------------------------//
|
||||
|
||||
// (C) Copyright boost.org 1999. Permission to copy, use, modify, sell
|
||||
// and distribute this software is granted provided this copyright
|
||||
// notice appears in all copies. This software is provided "as is" without
|
||||
// express or implied warranty, and with no claim as to its suitability for
|
||||
// any purpose.
|
||||
|
||||
// See http://www.boost.org for most recent version including documentation.
|
||||
|
||||
// Revision History
|
||||
// 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 <limits>
|
||||
|
||||
// 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::detail::type_wrapper<Target>* = 0
|
||||
# define BOOST_EXPLICIT_TARGET ,::boost::detail::type_wrapper<Target>*
|
||||
# else
|
||||
# define BOOST_EXPLICIT_DEFAULT_TARGET
|
||||
# define BOOST_EXPLICIT_TARGET
|
||||
# endif
|
||||
|
||||
namespace boost
|
||||
{
|
||||
namespace detail {
|
||||
template <class T> struct type_wrapper {};
|
||||
}
|
||||
#if !(defined(BOOST_MSVC) && BOOST_MSVC <= 1200) // 1200 = VC6
|
||||
namespace cast
|
||||
{
|
||||
#endif
|
||||
|
||||
// See the documentation for descriptions of how to choose between
|
||||
// static_cast<>, dynamic_cast<>, polymorphic_cast<>. and down_cast<>
|
||||
|
||||
// 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 ------------------------------------------------------------//
|
||||
|
||||
// Move to config.hpp?
|
||||
#if defined(__SGI_STL_PORT) && __SGI_STL_PORT <= 0x400 && __STL_STATIC_CONST_INIT_BUG
|
||||
// STLPort 4.0 doesn't define the static constants in numeric_limits<> so that they
|
||||
// can be used at compile time if the compiler bug indicated by
|
||||
// __STL_STATIC_CONST_INIT_BUG is present.
|
||||
# define BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
|
||||
#endif
|
||||
|
||||
#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
|
||||
// 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>
|
||||
struct greater_than_type_max;
|
||||
|
||||
template<>
|
||||
struct greater_than_type_max<true>
|
||||
{
|
||||
template <class X, class Y>
|
||||
static bool check(X x, Y y_max)
|
||||
{ return x > y_max; }
|
||||
};
|
||||
|
||||
template <>
|
||||
struct greater_than_type_max<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 bool check(X x, Y)
|
||||
{ return x >= 0 && static_cast<X>(static_cast<Y>(x)) != x; }
|
||||
};
|
||||
#endif
|
||||
|
||||
template<typename Target, typename Source>
|
||||
inline Target numeric_cast(Source arg BOOST_EXPLICIT_DEFAULT_TARGET)
|
||||
{
|
||||
// typedefs abbreviating respective trait classes
|
||||
typedef std::numeric_limits<Source> arg_traits;
|
||||
typedef std::numeric_limits<Target> result_traits;
|
||||
|
||||
#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
|
||||
// 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>::check(arg, result_traits::max())
|
||||
)
|
||||
|
||||
#else // We need to use #pragma hacks if available
|
||||
|
||||
# if BOOST_MSVC
|
||||
# pragma warning(push)
|
||||
# pragma warning(disable : 4018)
|
||||
# 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)
|
||||
# endif
|
||||
#endif
|
||||
{
|
||||
throw bad_numeric_cast();
|
||||
}
|
||||
return static_cast<Target>(arg);
|
||||
}
|
||||
|
||||
// Visual C++ workarounds --------------------------------------------------//
|
||||
|
||||
# if !(defined(BOOST_MSVC) && BOOST_MSVC <= 1200) // 1200 = VC6
|
||||
} // namespace cast
|
||||
|
||||
using ::boost::cast::polymorphic_cast;
|
||||
using ::boost::cast::polymorphic_downcast;
|
||||
using ::boost::cast::bad_numeric_cast;
|
||||
using ::boost::cast::numeric_cast;
|
||||
# else
|
||||
namespace cast {
|
||||
using ::boost::polymorphic_cast;
|
||||
using ::boost::polymorphic_downcast;
|
||||
using ::boost::bad_numeric_cast;
|
||||
using ::boost::numeric_cast;
|
||||
}
|
||||
# endif
|
||||
|
||||
# undef BOOST_EXPLICIT_DEFAULT_TARGET
|
||||
# undef BOOST_EXPLICIT_TARGET
|
||||
|
||||
} // namespace boost
|
||||
|
||||
#endif // BOOST_CAST_HPP
|
||||
|
||||
@@ -1,36 +0,0 @@
|
||||
// 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
|
||||
|
||||
namespace boost {
|
||||
|
||||
namespace detail {
|
||||
|
||||
template<class T> struct icast_identity
|
||||
{
|
||||
typedef T type;
|
||||
};
|
||||
|
||||
} // namespace detail
|
||||
|
||||
// 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 boost::detail::icast_identity<T>::type x) {
|
||||
return x;
|
||||
}
|
||||
|
||||
// incomplete return type now is here
|
||||
//template <typename T>
|
||||
//void implicit_cast (...);
|
||||
|
||||
} // namespace boost
|
||||
|
||||
|
||||
#endif // IMPLICIT_CAST_DWA200356_HPP
|
||||
@@ -1,100 +0,0 @@
|
||||
// boost polymorphic_cast.hpp header file ----------------------------------------------//
|
||||
|
||||
// (C) Copyright Kevlin Henney and Dave Abrahams 1999.
|
||||
// (C) Copyright Boris Rasin 2014.
|
||||
// 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
|
||||
// 10 Nov 14 polymorphic_pointer_downcast moved to a separate header,
|
||||
// minor improvements to stisfy latest Boost coding style
|
||||
// 08 Nov 14 Add polymorphic_pointer_downcast (Boris Rasin)
|
||||
// 09 Jun 14 "cast.hpp" was renamed to "polymorphic_cast.hpp" and
|
||||
// inclusion of numeric_cast was removed (Antony Polukhin)
|
||||
// 23 Jun 05 numeric_cast removed and redirected to the new verion (Fernando Cacciola)
|
||||
// 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_POLYMORPHIC_CAST_HPP
|
||||
#define BOOST_POLYMORPHIC_CAST_HPP
|
||||
|
||||
# include <boost/config.hpp>
|
||||
# include <boost/assert.hpp>
|
||||
# include <boost/throw_exception.hpp>
|
||||
# include <typeinfo>
|
||||
|
||||
#ifdef BOOST_HAS_PRAGMA_ONCE
|
||||
# pragma once
|
||||
#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)
|
||||
{
|
||||
Target tmp = dynamic_cast<Target>(x);
|
||||
if ( tmp == 0 ) boost::throw_exception( std::bad_cast() );
|
||||
return tmp;
|
||||
}
|
||||
|
||||
// polymorphic_downcast ----------------------------------------------------//
|
||||
|
||||
// BOOST_ASSERT() checked polymorphic downcast. Crosscasts prohibited.
|
||||
|
||||
// WARNING: Because this cast uses BOOST_ASSERT(), it violates
|
||||
// the One Definition Rule if used in multiple translation units
|
||||
// where BOOST_DISABLE_ASSERTS, BOOST_ENABLE_ASSERT_HANDLER
|
||||
// NDEBUG are defined inconsistently.
|
||||
|
||||
// Contributed by Dave Abrahams
|
||||
|
||||
template <class Target, class Source>
|
||||
inline Target polymorphic_downcast(Source* x)
|
||||
{
|
||||
BOOST_ASSERT( dynamic_cast<Target>(x) == x ); // detect logic error
|
||||
return static_cast<Target>(x);
|
||||
}
|
||||
|
||||
} // namespace boost
|
||||
|
||||
#endif // BOOST_POLYMORPHIC_CAST_HPP
|
||||
@@ -1,78 +0,0 @@
|
||||
// boost polymorphic_pointer_cast.hpp header file ----------------------------------------------//
|
||||
// (C) Copyright Boris Rasin and Antony Polukhin 2014-2015.
|
||||
// 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.
|
||||
|
||||
#ifndef BOOST_CONVERSION_POLYMORPHIC_POINTER_CAST_HPP
|
||||
#define BOOST_CONVERSION_POLYMORPHIC_POINTER_CAST_HPP
|
||||
|
||||
# include <boost/config.hpp>
|
||||
# include <boost/assert.hpp>
|
||||
# include <boost/pointer_cast.hpp>
|
||||
# include <boost/throw_exception.hpp>
|
||||
# include <boost/utility/declval.hpp>
|
||||
# ifdef BOOST_NO_CXX11_DECLTYPE
|
||||
# include <boost/typeof/typeof.hpp>
|
||||
# endif
|
||||
|
||||
#ifdef BOOST_HAS_PRAGMA_ONCE
|
||||
# pragma once
|
||||
#endif
|
||||
|
||||
namespace boost
|
||||
{
|
||||
// See the documentation for descriptions of how to choose between
|
||||
// static_pointer_cast<>, dynamic_pointer_cast<>, polymorphic_pointer_cast<> and polymorphic_pointer_downcast<>
|
||||
|
||||
// polymorphic_pointer_downcast --------------------------------------------//
|
||||
|
||||
// BOOST_ASSERT() checked polymorphic downcast. Crosscasts prohibited.
|
||||
// Supports any type with static_pointer_cast/dynamic_pointer_cast functions:
|
||||
// built-in pointers, std::shared_ptr, boost::shared_ptr, boost::intrusive_ptr, etc.
|
||||
|
||||
// WARNING: Because this cast uses BOOST_ASSERT(), it violates
|
||||
// the One Definition Rule if used in multiple translation units
|
||||
// where BOOST_DISABLE_ASSERTS, BOOST_ENABLE_ASSERT_HANDLER
|
||||
// NDEBUG are defined inconsistently.
|
||||
|
||||
// Contributed by Boris Rasin
|
||||
|
||||
namespace detail
|
||||
{
|
||||
template <typename Target, typename Source>
|
||||
struct dynamic_pointer_cast_result
|
||||
{
|
||||
#ifdef BOOST_NO_CXX11_DECLTYPE
|
||||
BOOST_TYPEOF_NESTED_TYPEDEF_TPL(nested, dynamic_pointer_cast<Target>(boost::declval<Source>()))
|
||||
typedef typename nested::type type;
|
||||
#else
|
||||
typedef decltype(dynamic_pointer_cast<Target>(boost::declval<Source>())) type;
|
||||
#endif
|
||||
};
|
||||
}
|
||||
|
||||
template <typename Target, typename Source>
|
||||
inline typename detail::dynamic_pointer_cast_result<Target, Source>::type
|
||||
polymorphic_pointer_downcast (const Source& x)
|
||||
{
|
||||
BOOST_ASSERT(dynamic_pointer_cast<Target> (x) == x);
|
||||
return static_pointer_cast<Target> (x);
|
||||
}
|
||||
|
||||
template <typename Target, typename Source>
|
||||
inline typename detail::dynamic_pointer_cast_result<Target, Source>::type
|
||||
polymorphic_pointer_cast (const Source& x)
|
||||
{
|
||||
typename detail::dynamic_pointer_cast_result<Target, Source>::type tmp
|
||||
= dynamic_pointer_cast<Target> (x);
|
||||
if ( !tmp ) boost::throw_exception( std::bad_cast() );
|
||||
|
||||
return tmp;
|
||||
}
|
||||
|
||||
} // namespace boost
|
||||
|
||||
#endif // BOOST_CONVERSION_POLYMORPHIC_POINTER_CAST_HPP
|
||||
-53
@@ -1,53 +0,0 @@
|
||||
<html>
|
||||
|
||||
<head>
|
||||
<meta http-equiv="Content-Language" content="en-us">
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
|
||||
<meta name="GENERATOR" content="Microsoft FrontPage 5.0">
|
||||
<meta name="ProgId" content="FrontPage.Editor.Document">
|
||||
<title>Boost Conversion Library</title>
|
||||
<style>
|
||||
.copyright
|
||||
{
|
||||
color: #666666;
|
||||
font-size: small;
|
||||
}
|
||||
</style>
|
||||
</head>
|
||||
|
||||
<body bgcolor="#FFFFFF" text="#000000">
|
||||
|
||||
<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. 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/polymorphic_cast.hpp and boost/polymorphic_pointer_cast.hpp</a>
|
||||
headers provide <b>polymorphic_cast<></b>,
|
||||
<b>polymorphic_downcast<></b> and <b>polymorphic_pointer_downcast<></b> to perform safe casting between
|
||||
polymorphic types.<br>
|
||||
</li>
|
||||
<li>The boost/implicit_cast.hpp header provides <b>implicit_cast<></b>
|
||||
to perform implicit casts only (no down-cast, no void*->T*, no U->T if T has only explicit constructors for U).<br>
|
||||
</li>
|
||||
<li>The <a href="../../doc/html/boost_lexical_cast.html">boost/lexical_cast</a> header provides <b>lexical_cast<></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"
|
||||
S-Format="%d %B, %Y" startspan -->June 23, 2005<!--webbot bot="Timestamp" endspan i-checksum="30348" -->
|
||||
</p>
|
||||
<p class="copyright">
|
||||
Copyright 2001 Beman Dawes.
|
||||
Distributed under the Boost Software License, Version 1.0. (See accompanying
|
||||
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</a>)
|
||||
</p>
|
||||
</body>
|
||||
|
||||
</html>
|
||||
@@ -1,15 +0,0 @@
|
||||
{
|
||||
"key": "conversion",
|
||||
"name": "Conversion",
|
||||
"authors": [
|
||||
"Dave Abrahams",
|
||||
"Kevlin Henney"
|
||||
],
|
||||
"description": "Polymorphic casts.",
|
||||
"category": [
|
||||
"Miscellaneous"
|
||||
],
|
||||
"maintainers": [
|
||||
"Antony Polukhin <antoshkka -at- gmail.com>"
|
||||
]
|
||||
}
|
||||
@@ -1,29 +0,0 @@
|
||||
# Copyright (C) 2001-2003 Douglas Gregor
|
||||
# Copyright (C) 2011-2014 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)
|
||||
#
|
||||
|
||||
import testing ;
|
||||
import feature ;
|
||||
|
||||
project
|
||||
: requirements
|
||||
<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
|
||||
<toolset>gcc:<cxxflags>-Wno-uninitialized
|
||||
;
|
||||
|
||||
test-suite conversion
|
||||
: [ run implicit_cast.cpp ]
|
||||
[ compile-fail implicit_cast_fail.cpp ]
|
||||
[ run cast_test.cpp ]
|
||||
[ run polymorphic_cast_test.cpp ]
|
||||
[ compile-fail implicit_cast_fail2.cpp ]
|
||||
;
|
||||
@@ -1,87 +0,0 @@
|
||||
// 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 <boost/polymorphic_cast.hpp>
|
||||
|
||||
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
|
||||
Derived derived_instance;
|
||||
Base * base = &derived_instance;
|
||||
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 base_instance;
|
||||
base = &base_instance;
|
||||
|
||||
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
|
||||
@@ -1,38 +0,0 @@
|
||||
// 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/detail/lightweight_test.hpp>
|
||||
#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));
|
||||
BOOST_TEST(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")));
|
||||
|
||||
// warning suppression:
|
||||
(void)x;
|
||||
(void)f;
|
||||
(void)z;
|
||||
|
||||
return boost::report_errors();
|
||||
}
|
||||
@@ -1,20 +0,0 @@
|
||||
// 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>
|
||||
|
||||
using boost::implicit_cast;
|
||||
|
||||
struct foo
|
||||
{
|
||||
explicit foo(char const*) {}
|
||||
};
|
||||
|
||||
int main()
|
||||
{
|
||||
foo x = implicit_cast<foo>("foobar");
|
||||
(void)x; // warning suppression.
|
||||
return 0;
|
||||
}
|
||||
@@ -1,19 +0,0 @@
|
||||
//
|
||||
// Test that implicit_cast requires a template argument
|
||||
//
|
||||
// Copyright 2014 Peter Dimov
|
||||
//
|
||||
// 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>
|
||||
|
||||
int main()
|
||||
{
|
||||
int x = boost::implicit_cast( 1 );
|
||||
(void)x;
|
||||
|
||||
return 0;
|
||||
}
|
||||
@@ -1,368 +0,0 @@
|
||||
//
|
||||
// Test boost::polymorphic_cast, boost::polymorphic_downcast and
|
||||
// boost::polymorphic_pointer_cast, boost::polymorphic_pointer_downcast
|
||||
//
|
||||
// Copyright 1999 Beman Dawes
|
||||
// Copyright 1999 Dave Abrahams
|
||||
// Copyright 2014 Peter Dimov
|
||||
// Copyright 2014 Boris Rasin, 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
|
||||
//
|
||||
|
||||
#define BOOST_ENABLE_ASSERT_HANDLER
|
||||
#include <boost/polymorphic_cast.hpp>
|
||||
#include <boost/polymorphic_pointer_cast.hpp>
|
||||
#include <boost/smart_ptr/shared_ptr.hpp>
|
||||
#include <boost/smart_ptr/intrusive_ptr.hpp>
|
||||
#include <boost/smart_ptr/intrusive_ref_counter.hpp>
|
||||
#include <boost/core/lightweight_test.hpp>
|
||||
#include <string>
|
||||
#include <memory>
|
||||
|
||||
static bool expect_assertion = false;
|
||||
static int assertion_failed_count = 0;
|
||||
|
||||
// BOOST_ASSERT custom handler
|
||||
void boost::assertion_failed( char const * expr, char const * function, char const * file, long line )
|
||||
{
|
||||
if( expect_assertion )
|
||||
{
|
||||
++assertion_failed_count;
|
||||
}
|
||||
else
|
||||
{
|
||||
BOOST_ERROR( "unexpected assertion" );
|
||||
|
||||
BOOST_LIGHTWEIGHT_TEST_OSTREAM
|
||||
<< file << "(" << line << "): assertion '" << expr << "' failed in function '"
|
||||
<< function << "'" << std::endl;
|
||||
}
|
||||
}
|
||||
|
||||
//
|
||||
|
||||
struct Base : boost::intrusive_ref_counter<Base>
|
||||
{
|
||||
virtual ~Base() {}
|
||||
virtual std::string kind() { return "Base"; }
|
||||
};
|
||||
|
||||
struct Base2
|
||||
{
|
||||
virtual ~Base2() {}
|
||||
virtual std::string kind2() { return "Base2"; }
|
||||
};
|
||||
|
||||
struct Derived : public Base, Base2
|
||||
{
|
||||
virtual std::string kind() { return "Derived"; }
|
||||
};
|
||||
|
||||
static void test_polymorphic_cast()
|
||||
{
|
||||
Base * base = new Derived;
|
||||
|
||||
Derived * derived;
|
||||
|
||||
try
|
||||
{
|
||||
derived = boost::polymorphic_cast<Derived*>( base );
|
||||
|
||||
BOOST_TEST( derived != 0 );
|
||||
|
||||
if( derived != 0 )
|
||||
{
|
||||
BOOST_TEST_EQ( derived->kind(), "Derived" );
|
||||
}
|
||||
}
|
||||
catch( std::bad_cast const& )
|
||||
{
|
||||
BOOST_ERROR( "boost::polymorphic_cast<Derived*>( base ) threw std::bad_cast" );
|
||||
}
|
||||
|
||||
Base2 * base2;
|
||||
|
||||
try
|
||||
{
|
||||
base2 = boost::polymorphic_cast<Base2*>( base ); // crosscast
|
||||
|
||||
BOOST_TEST( base2 != 0 );
|
||||
|
||||
if( base2 != 0 )
|
||||
{
|
||||
BOOST_TEST_EQ( base2->kind2(), "Base2" );
|
||||
}
|
||||
}
|
||||
catch( std::bad_cast const& )
|
||||
{
|
||||
BOOST_ERROR( "boost::polymorphic_cast<Base2*>( base ) threw std::bad_cast" );
|
||||
}
|
||||
|
||||
delete base;
|
||||
}
|
||||
|
||||
static void test_polymorphic_pointer_cast()
|
||||
{
|
||||
Base * base = new Derived;
|
||||
|
||||
Derived * derived;
|
||||
|
||||
try
|
||||
{
|
||||
derived = boost::polymorphic_pointer_cast<Derived>( base );
|
||||
|
||||
BOOST_TEST( derived != 0 );
|
||||
|
||||
if( derived != 0 )
|
||||
{
|
||||
BOOST_TEST_EQ( derived->kind(), "Derived" );
|
||||
}
|
||||
}
|
||||
catch( std::bad_cast const& )
|
||||
{
|
||||
BOOST_ERROR( "boost::polymorphic_pointer_cast<Derived>( base ) threw std::bad_cast" );
|
||||
}
|
||||
|
||||
Base2 * base2;
|
||||
|
||||
try
|
||||
{
|
||||
base2 = boost::polymorphic_pointer_cast<Base2>( base ); // crosscast
|
||||
|
||||
BOOST_TEST( base2 != 0 );
|
||||
|
||||
if( base2 != 0 )
|
||||
{
|
||||
BOOST_TEST_EQ( base2->kind2(), "Base2" );
|
||||
}
|
||||
}
|
||||
catch( std::bad_cast const& )
|
||||
{
|
||||
BOOST_ERROR( "boost::polymorphic_pointer_cast<Base2>( base ) threw std::bad_cast" );
|
||||
}
|
||||
|
||||
boost::shared_ptr<Base> sp_base( base );
|
||||
boost::shared_ptr<Base2> sp_base2;
|
||||
try
|
||||
{
|
||||
sp_base2 = boost::polymorphic_pointer_cast<Base2>( sp_base ); // crosscast
|
||||
|
||||
BOOST_TEST( sp_base2 != 0 );
|
||||
|
||||
if( sp_base2 != 0 )
|
||||
{
|
||||
BOOST_TEST_EQ( base2->kind2(), "Base2" );
|
||||
}
|
||||
}
|
||||
catch( std::bad_cast const& )
|
||||
{
|
||||
BOOST_ERROR( "boost::polymorphic_pointer_cast<Base2>( sp_base ) threw std::bad_cast" );
|
||||
}
|
||||
|
||||
// we do not `delete base;` because sahred_ptr is holding base
|
||||
}
|
||||
|
||||
static void test_polymorphic_downcast()
|
||||
{
|
||||
Base * base = new Derived;
|
||||
|
||||
Derived * derived = boost::polymorphic_downcast<Derived*>( base );
|
||||
|
||||
BOOST_TEST( derived != 0 );
|
||||
|
||||
if( derived != 0 )
|
||||
{
|
||||
BOOST_TEST_EQ( derived->kind(), "Derived" );
|
||||
}
|
||||
|
||||
// polymorphic_downcast can't do crosscasts
|
||||
|
||||
delete base;
|
||||
}
|
||||
|
||||
static void test_polymorphic_pointer_downcast_builtin()
|
||||
{
|
||||
Base * base = new Derived;
|
||||
|
||||
Derived * derived = boost::polymorphic_pointer_downcast<Derived>( base );
|
||||
|
||||
BOOST_TEST( derived != 0 );
|
||||
|
||||
if( derived != 0 )
|
||||
{
|
||||
BOOST_TEST_EQ( derived->kind(), "Derived" );
|
||||
}
|
||||
|
||||
// polymorphic_pointer_downcast can't do crosscasts
|
||||
|
||||
delete base;
|
||||
}
|
||||
|
||||
static void test_polymorphic_pointer_downcast_boost_shared()
|
||||
{
|
||||
boost::shared_ptr<Base> base (new Derived);
|
||||
|
||||
boost::shared_ptr<Derived> derived = boost::polymorphic_pointer_downcast<Derived>( base );
|
||||
|
||||
BOOST_TEST( derived != 0 );
|
||||
|
||||
if( derived != 0 )
|
||||
{
|
||||
BOOST_TEST_EQ( derived->kind(), "Derived" );
|
||||
}
|
||||
}
|
||||
|
||||
static void test_polymorphic_pointer_downcast_intrusive()
|
||||
{
|
||||
boost::intrusive_ptr<Base> base (new Derived);
|
||||
|
||||
boost::intrusive_ptr<Derived> derived = boost::polymorphic_pointer_downcast<Derived>( base );
|
||||
|
||||
BOOST_TEST( derived != 0 );
|
||||
|
||||
if( derived != 0 )
|
||||
{
|
||||
BOOST_TEST_EQ( derived->kind(), "Derived" );
|
||||
}
|
||||
}
|
||||
|
||||
#ifndef BOOST_NO_CXX11_SMART_PTR
|
||||
|
||||
static void test_polymorphic_pointer_downcast_std_shared()
|
||||
{
|
||||
std::shared_ptr<Base> base (new Derived);
|
||||
|
||||
std::shared_ptr<Derived> derived = boost::polymorphic_pointer_downcast<Derived>( base );
|
||||
|
||||
BOOST_TEST( derived != 0 );
|
||||
|
||||
if( derived != 0 )
|
||||
{
|
||||
BOOST_TEST_EQ( derived->kind(), "Derived" );
|
||||
}
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
static void test_polymorphic_cast_fail()
|
||||
{
|
||||
Base * base = new Base;
|
||||
|
||||
BOOST_TEST_THROWS( boost::polymorphic_cast<Derived*>( base ), std::bad_cast );
|
||||
|
||||
delete base;
|
||||
}
|
||||
|
||||
static void test_polymorphic_pointer_cast_fail()
|
||||
{
|
||||
Base * base = new Base;
|
||||
BOOST_TEST_THROWS( boost::polymorphic_pointer_cast<Derived>( base ), std::bad_cast );
|
||||
delete base;
|
||||
|
||||
BOOST_TEST_THROWS( boost::polymorphic_pointer_cast<Derived>( boost::shared_ptr<Base>(new Base) ), std::bad_cast );
|
||||
|
||||
#ifndef BOOST_NO_CXX11_SMART_PTR
|
||||
BOOST_TEST_THROWS( boost::polymorphic_pointer_cast<Derived>( std::shared_ptr<Base>(new Base) ), std::bad_cast );
|
||||
#endif
|
||||
|
||||
BOOST_TEST_THROWS( boost::polymorphic_pointer_cast<Derived>( boost::intrusive_ptr<Base>(new Base) ), std::bad_cast );
|
||||
}
|
||||
|
||||
static void test_polymorphic_downcast_fail()
|
||||
{
|
||||
Base * base = new Base;
|
||||
|
||||
int old_count = assertion_failed_count;
|
||||
expect_assertion = true;
|
||||
|
||||
boost::polymorphic_downcast<Derived*>( base ); // should assert
|
||||
|
||||
BOOST_TEST_EQ( assertion_failed_count, old_count + 1 );
|
||||
expect_assertion = false;
|
||||
|
||||
delete base;
|
||||
}
|
||||
|
||||
static void test_polymorphic_pointer_downcast_builtin_fail()
|
||||
{
|
||||
Base * base = new Base;
|
||||
|
||||
int old_count = assertion_failed_count;
|
||||
expect_assertion = true;
|
||||
|
||||
boost::polymorphic_pointer_downcast<Derived>( base ); // should assert
|
||||
|
||||
BOOST_TEST_EQ( assertion_failed_count, old_count + 1 );
|
||||
expect_assertion = false;
|
||||
|
||||
delete base;
|
||||
}
|
||||
|
||||
static void test_polymorphic_pointer_downcast_boost_shared_fail()
|
||||
{
|
||||
boost::shared_ptr<Base> base (new Base);
|
||||
|
||||
int old_count = assertion_failed_count;
|
||||
expect_assertion = true;
|
||||
|
||||
boost::polymorphic_pointer_downcast<Derived>( base ); // should assert
|
||||
|
||||
BOOST_TEST_EQ( assertion_failed_count, old_count + 1 );
|
||||
expect_assertion = false;
|
||||
}
|
||||
|
||||
#ifndef BOOST_NO_CXX11_SMART_PTR
|
||||
|
||||
static void test_polymorphic_pointer_downcast_std_shared_fail()
|
||||
{
|
||||
std::shared_ptr<Base> base (new Base);
|
||||
|
||||
int old_count = assertion_failed_count;
|
||||
expect_assertion = true;
|
||||
|
||||
boost::polymorphic_pointer_downcast<Derived>( base ); // should assert
|
||||
|
||||
BOOST_TEST_EQ( assertion_failed_count, old_count + 1 );
|
||||
expect_assertion = false;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
static void test_polymorphic_pointer_downcast_intrusive_fail()
|
||||
{
|
||||
boost::intrusive_ptr<Base> base (new Base);
|
||||
|
||||
int old_count = assertion_failed_count;
|
||||
expect_assertion = true;
|
||||
|
||||
boost::polymorphic_pointer_downcast<Derived>( base ); // should assert
|
||||
|
||||
BOOST_TEST_EQ( assertion_failed_count, old_count + 1 );
|
||||
expect_assertion = false;
|
||||
}
|
||||
|
||||
int main()
|
||||
{
|
||||
test_polymorphic_cast();
|
||||
test_polymorphic_pointer_cast();
|
||||
test_polymorphic_downcast();
|
||||
test_polymorphic_pointer_downcast_builtin();
|
||||
test_polymorphic_pointer_downcast_boost_shared();
|
||||
test_polymorphic_pointer_downcast_intrusive();
|
||||
test_polymorphic_cast_fail();
|
||||
test_polymorphic_pointer_cast_fail();
|
||||
test_polymorphic_downcast_fail();
|
||||
test_polymorphic_pointer_downcast_builtin_fail();
|
||||
test_polymorphic_pointer_downcast_boost_shared_fail();
|
||||
test_polymorphic_pointer_downcast_intrusive_fail();
|
||||
|
||||
#ifndef BOOST_NO_CXX11_SMART_PTR
|
||||
test_polymorphic_pointer_downcast_std_shared();
|
||||
test_polymorphic_pointer_downcast_std_shared_fail();
|
||||
#endif
|
||||
|
||||
return boost::report_errors();
|
||||
}
|
||||
Reference in New Issue
Block a user