early-access version 3088

This commit is contained in:
pineappleEA
2022-11-05 15:35:56 +01:00
parent 4e4fc25ce3
commit b601909c6d
35519 changed files with 5996896 additions and 860 deletions

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# Copyright 2018, 2019 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(BoostTestJamfile OPTIONAL RESULT_VARIABLE HAVE_BOOST_TEST)
if(HAVE_BOOST_TEST)
boost_test_jamfile(FILE Jamfile.v2 LINK_LIBRARIES Boost::function Boost::core Boost::lambda)
endif()

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# Function library
# Copyright Douglas Gregor 2001-2003. Use, modification and
# distribution is 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)
# For more information, see http://www.boost.org/
import testing ;
project
: default-build
<warnings>extra
: requirements
<toolset>msvc:<warnings-as-errors>on
<toolset>gcc:<warnings-as-errors>on
<toolset>clang:<warnings-as-errors>on
;
run function_test.cpp ;
# /usr/include/c++/4.4/bits/shared_ptr.h:146: error: cannot use typeid with -fno-rtti
run function_test.cpp : : : <rtti>off <toolset>gcc-4.4.7,<cxxstd>0x:<build>no : function_test_no_rtti ;
run function_n_test.cpp ;
run allocator_test.cpp ;
run stateless_test.cpp ;
run lambda_test.cpp ;
compile-fail function_test_fail1.cpp ;
compile-fail function_test_fail2.cpp ;
compile function_30.cpp ;
compile function_30_repeat.cpp ;
run function_arith_cxx98.cpp ;
run function_arith_portable.cpp ;
run sum_avg_cxx98.cpp ;
run sum_avg_portable.cpp ;
run mem_fun_cxx98.cpp ;
run mem_fun_portable.cpp ;
run std_bind_cxx98.cpp ;
run std_bind_portable.cpp ;
run function_ref_cxx98.cpp ;
run function_ref_portable.cpp ;
run contains_test.cpp ;
run contains2_test.cpp ;
run nothrow_swap.cpp ;
run rvalues_test.cpp ;
compile function_typeof_test.cpp ;
run result_arg_types_test.cpp ;
lib throw_bad_function_call : throw_bad_function_call.cpp : <link>shared:<define>THROW_BAD_FUNCTION_CALL_DYN_LINK=1 ;
run test_bad_function_call.cpp throw_bad_function_call : : : <link>shared : test_bad_function_call_shared ;
run test_bad_function_call.cpp throw_bad_function_call : : : <link>static : test_bad_function_call_static ;
lib mixed_cxxstd : mixed_cxxstd.cpp : <link>shared:<define>MIXED_CXXSTD_DYN_LINK=1 ;
run test_mixed_cxxstd.cpp mixed_cxxstd : : : <link>shared : mixed_cxxstd_shared ;
run test_mixed_cxxstd.cpp mixed_cxxstd : : : <link>static : mixed_cxxstd_static ;
run test_mixed_cxxstd.cpp mixed_cxxstd/<cxxstd>98 : : : <link>shared : mixed_cxxstd_shared_98 ;
run test_mixed_cxxstd.cpp mixed_cxxstd/<cxxstd>98 : : : <link>static : mixed_cxxstd_static_98 ;
run test_mixed_cxxstd.cpp mixed_cxxstd/<cxxstd>0x : : : <link>shared : mixed_cxxstd_shared_0x ;
run test_mixed_cxxstd.cpp mixed_cxxstd/<cxxstd>0x : : : <link>static : mixed_cxxstd_static_0x ;
local check14 = [ check-target-builds mixed_cxxstd/<cxxstd>14 : : <build>no ] ;
run test_mixed_cxxstd.cpp mixed_cxxstd/<cxxstd>14 : : : <link>shared $(check14) : mixed_cxxstd_shared_14 ;
run test_mixed_cxxstd.cpp mixed_cxxstd/<cxxstd>14 : : : <link>static $(check14) : mixed_cxxstd_static_14 ;
lib return_function : return_function.cpp : <link>shared:<define>RETURN_FUNCTION_DYN_LINK=1 ;
run test_return_function.cpp return_function : : : <link>shared : return_function_shared ;
run test_return_function.cpp return_function : : : <link>static : return_function_static ;
run test_return_function.cpp return_function/<cxxstd>98 : : : <link>shared : return_function_shared_98 ;
run test_return_function.cpp return_function/<cxxstd>98 : : : <link>static : return_function_static_98 ;
run test_return_function.cpp return_function/<cxxstd>0x : : : <link>shared : return_function_shared_0x ;
run test_return_function.cpp return_function/<cxxstd>0x : : : <link>static : return_function_static_0x ;
run test_return_function.cpp return_function/<cxxstd>14 : : : <link>shared $(check14) : return_function_shared_14 ;
run test_return_function.cpp return_function/<cxxstd>14 : : : <link>static $(check14) : return_function_static_14 ;
run quick.cpp ;

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// Boost.Function library
// Copyright Douglas Gregor 2001-2003. Use, modification and
// distribution is 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)
// For more information, see http://www.boost.org
#include <boost/function.hpp>
#include <boost/core/lightweight_test.hpp>
#include <cassert>
#include <functional>
using namespace std;
using namespace boost;
static int alloc_count = 0;
static int dealloc_count = 0;
template<typename T>
struct counting_allocator : public std::allocator<T>
{
template<typename U>
struct rebind
{
typedef counting_allocator<U> other;
};
counting_allocator()
{
}
template<typename U>
counting_allocator( counting_allocator<U> )
{
}
T* allocate(std::size_t n)
{
alloc_count++;
return std::allocator<T>::allocate(n);
}
void deallocate(T* p, std::size_t n)
{
dealloc_count++;
std::allocator<T>::deallocate(p, n);
}
};
struct enable_small_object_optimization
{
};
struct disable_small_object_optimization
{
int unused_state_data[32];
};
template <typename base>
struct plus_int: base
{
int operator()(int x, int y) const { return x + y; }
};
static int do_minus(int x, int y) { return x-y; }
template <typename base>
struct DoNothing: base
{
void operator()() const {}
};
static void do_nothing() {}
int main()
{
function2<int, int, int> f;
f.assign( plus_int<disable_small_object_optimization>(), counting_allocator<int>() );
f.clear();
BOOST_TEST_EQ( alloc_count, 1 );
BOOST_TEST_EQ( dealloc_count, 1 );
alloc_count = 0;
dealloc_count = 0;
f.assign( plus_int<enable_small_object_optimization>(), counting_allocator<int>() );
f.clear();
BOOST_TEST_EQ( alloc_count, 0 );
BOOST_TEST_EQ( dealloc_count, 0 );
f.assign( plus_int<disable_small_object_optimization>(), std::allocator<int>() );
f.clear();
f.assign( plus_int<enable_small_object_optimization>(), std::allocator<int>() );
f.clear();
alloc_count = 0;
dealloc_count = 0;
f.assign( &do_minus, counting_allocator<int>() );
f.clear();
BOOST_TEST_EQ( alloc_count, 0 );
BOOST_TEST_EQ( dealloc_count, 0 );
f.assign( &do_minus, std::allocator<int>() );
f.clear();
function0<void> fv;
alloc_count = 0;
dealloc_count = 0;
fv.assign( DoNothing<disable_small_object_optimization>(), counting_allocator<int>() );
fv.clear();
BOOST_TEST_EQ( alloc_count, 1 );
BOOST_TEST_EQ( dealloc_count, 1 );
alloc_count = 0;
dealloc_count = 0;
fv.assign( DoNothing<enable_small_object_optimization>(), counting_allocator<int>() );
fv.clear();
BOOST_TEST_EQ( alloc_count, 0 );
BOOST_TEST_EQ( dealloc_count, 0 );
fv.assign( DoNothing<disable_small_object_optimization>(), std::allocator<int>() );
fv.clear();
fv.assign( DoNothing<enable_small_object_optimization>(), std::allocator<int>() );
fv.clear();
alloc_count = 0;
dealloc_count = 0;
fv.assign( &do_nothing, counting_allocator<int>() );
fv.clear();
BOOST_TEST_EQ( alloc_count, 0 );
BOOST_TEST_EQ( dealloc_count, 0 );
fv.assign( &do_nothing, std::allocator<int>() );
fv.clear();
function0<void> fv2;
fv.assign(&do_nothing, std::allocator<int>() );
fv2.assign(fv, std::allocator<int>() );
return boost::report_errors();
}

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# Copyright 2018, 2019 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
cmake_minimum_required(VERSION 3.5...3.16)
project(cmake_install_test LANGUAGES CXX)
find_package(boost_function REQUIRED)
add_executable(main main.cpp)
target_link_libraries(main Boost::function)
enable_testing()
add_test(main main)
add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND} --output-on-failure -C $<CONFIG>)

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// Copyright 2017, 2021 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
// See library home page at http://www.boost.org/libs/function
#include <boost/function.hpp>
#include <cassert>
#define BOOST_TEST(expr) assert(expr)
#define BOOST_TEST_EQ(x1, x2) assert((x1)==(x2))
int add( int x, int y )
{
return x + y;
}
int main()
{
boost::function<int(int, int)> fn( &add );
BOOST_TEST_EQ( fn( 1, 2 ), 3 );
}

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# Copyright 2018, 2019 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
cmake_minimum_required(VERSION 3.5)
project(cmake_subdir_test LANGUAGES CXX)
add_subdirectory(../.. boostorg/function)
# boost_add_subdir
function(boost_add_subdir name)
add_subdirectory(../../../${name} boostorg/${name})
endfunction()
# primary dependencies
boost_add_subdir(assert)
boost_add_subdir(bind)
boost_add_subdir(config)
boost_add_subdir(core)
boost_add_subdir(integer)
boost_add_subdir(preprocessor)
boost_add_subdir(throw_exception)
boost_add_subdir(type_index)
boost_add_subdir(type_traits)
boost_add_subdir(typeof)
# secondary dependencies
boost_add_subdir(static_assert)
boost_add_subdir(container_hash)
boost_add_subdir(smart_ptr)
boost_add_subdir(detail)
boost_add_subdir(move)
boost_add_subdir(predef)
# --target check
add_executable(quick ../quick.cpp)
target_link_libraries(quick Boost::function Boost::core)
enable_testing()
add_test(quick quick)
add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND} --output-on-failure -C $<CONFIG>)

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// Boost.Function library
// Copyright Douglas Gregor 2004.
// Copyright 2005 Peter Dimov
// Use, modification and distribution is 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)
#include <boost/function.hpp>
#include <boost/core/lightweight_test.hpp>
static int forty_two()
{
return 42;
}
struct Seventeen
{
int operator()() const
{
return 17;
}
};
bool operator==(const Seventeen&, const Seventeen&)
{
return true;
}
struct ReturnInt
{
explicit ReturnInt(int value) : value(value)
{
}
int operator()() const
{
return value;
}
int value;
};
bool operator==(const ReturnInt& x, const ReturnInt& y)
{
return x.value == y.value;
}
bool operator!=(const ReturnInt& x, const ReturnInt& y)
{
return x.value != y.value;
}
int main()
{
boost::function0<int> fn;
fn = &forty_two;
BOOST_TEST( fn() == 42 );
BOOST_TEST( fn.contains(&forty_two) );
BOOST_TEST( !fn.contains( Seventeen() ) );
BOOST_TEST( !fn.contains( ReturnInt(0) ) );
BOOST_TEST( !fn.contains( ReturnInt(12) ) );
fn = Seventeen();
BOOST_TEST( fn() == 17 );
BOOST_TEST( !fn.contains( &forty_two ) );
BOOST_TEST( fn.contains( Seventeen() ) );
BOOST_TEST( !fn.contains( ReturnInt(0) ) );
BOOST_TEST( !fn.contains( ReturnInt(12) ) );
fn = ReturnInt(12);
BOOST_TEST( fn() == 12 );
BOOST_TEST( !fn.contains( &forty_two ) );
BOOST_TEST( !fn.contains( Seventeen() ) );
BOOST_TEST( !fn.contains( ReturnInt(0) ) );
BOOST_TEST( fn.contains( ReturnInt(12) ) );
return boost::report_errors();
}

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// Boost.Function library
// Copyright Douglas Gregor 2004. Use, modification and
// distribution is 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)
#include <boost/function.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/ref.hpp>
#define BOOST_CHECK BOOST_TEST
static int forty_two() { return 42; }
struct Seventeen
{
int operator()() const { return 17; }
};
struct ReturnInt
{
explicit ReturnInt(int value) : value(value) {}
int operator()() const { return value; }
int value;
};
bool operator==(const ReturnInt& x, const ReturnInt& y)
{ return x.value == y.value; }
bool operator!=(const ReturnInt& x, const ReturnInt& y)
{ return x.value != y.value; }
namespace contain_test {
struct ReturnIntFE
{
explicit ReturnIntFE(int value) : value(value) {}
int operator()() const { return value; }
int value;
};
}
#ifndef BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP
namespace contain_test {
# ifndef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
bool function_equal(const ReturnIntFE& x, const ReturnIntFE& y)
{ return x.value == y.value; }
# else
bool function_equal_impl(const ReturnIntFE& x, const ReturnIntFE& y, int)
{ return x.value == y.value; }
# endif // #ifndef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
}
#else // BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP
namespace boost {
# ifndef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
bool
function_equal(const contain_test::ReturnIntFE& x,
const contain_test::ReturnIntFE& y)
{ return x.value == y.value; }
# else
bool
function_equal_impl(const contain_test::ReturnIntFE& x,
const contain_test::ReturnIntFE& y, int)
{ return x.value == y.value; }
# endif
}
#endif
static void target_test()
{
boost::function0<int> f;
f = &forty_two;
BOOST_CHECK(*f.target<int (*)()>() == &forty_two);
BOOST_CHECK(!f.target<Seventeen>());
f = Seventeen();
BOOST_CHECK(!f.target<int (*)()>());
BOOST_CHECK(f.target<Seventeen>());
Seventeen this_seventeen;
f = boost::ref(this_seventeen);
BOOST_CHECK(!f.target<int (*)()>());
BOOST_CHECK(f.target<Seventeen>());
BOOST_CHECK(f.target<Seventeen>() == &this_seventeen);
const Seventeen const_seventeen = this_seventeen;
f = boost::ref(const_seventeen);
BOOST_CHECK(!f.target<int (*)()>());
BOOST_CHECK(f.target<const Seventeen>());
BOOST_CHECK(f.target<const Seventeen>() == &const_seventeen);
BOOST_CHECK(f.target<const volatile Seventeen>());
BOOST_CHECK(!f.target<Seventeen>());
BOOST_CHECK(!f.target<volatile Seventeen>());
}
static void equal_test()
{
boost::function0<int> f;
f = &forty_two;
BOOST_CHECK(f == &forty_two);
BOOST_CHECK(f != ReturnInt(17));
#if !(defined(__GNUC__) && __GNUC__ == 3 && __GNUC_MINOR__ <= 3)
BOOST_CHECK(&forty_two == f);
BOOST_CHECK(ReturnInt(17) != f);
#endif
BOOST_CHECK(f.contains(&forty_two));
f = ReturnInt(17);
BOOST_CHECK(f != &forty_two);
BOOST_CHECK(f == ReturnInt(17));
BOOST_CHECK(f != ReturnInt(16));
#if !(defined(__GNUC__) && __GNUC__ == 3 && __GNUC_MINOR__ <= 3)
BOOST_CHECK(&forty_two != f);
BOOST_CHECK(ReturnInt(17) == f);
BOOST_CHECK(ReturnInt(16) != f);
#endif
BOOST_CHECK(f.contains(ReturnInt(17)));
f = contain_test::ReturnIntFE(17);
BOOST_CHECK(f != &forty_two);
BOOST_CHECK(f == contain_test::ReturnIntFE(17));
BOOST_CHECK(f != contain_test::ReturnIntFE(16));
#if !(defined(__GNUC__) && __GNUC__ == 3 && __GNUC_MINOR__ <= 3)
BOOST_CHECK(&forty_two != f);
BOOST_CHECK(contain_test::ReturnIntFE(17) == f);
BOOST_CHECK(contain_test::ReturnIntFE(16) != f);
#endif
BOOST_CHECK(f.contains(contain_test::ReturnIntFE(17)));
#if !defined(BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX)
boost::function<int(void)> g;
g = &forty_two;
BOOST_CHECK(g == &forty_two);
BOOST_CHECK(g != ReturnInt(17));
# if !(defined(__GNUC__) && __GNUC__ == 3 && __GNUC_MINOR__ <= 3)
BOOST_CHECK(&forty_two == g);
BOOST_CHECK(ReturnInt(17) != g);
# endif
g = ReturnInt(17);
BOOST_CHECK(g != &forty_two);
BOOST_CHECK(g == ReturnInt(17));
BOOST_CHECK(g != ReturnInt(16));
# if !(defined(__GNUC__) && __GNUC__ == 3 && __GNUC_MINOR__ <= 3)
BOOST_CHECK(&forty_two != g);
BOOST_CHECK(ReturnInt(17) == g);
BOOST_CHECK(ReturnInt(16) != g);
# endif
#endif
}
static void ref_equal_test()
{
{
ReturnInt ri(17);
boost::function0<int> f = boost::ref(ri);
// References and values are equal
BOOST_CHECK(f == boost::ref(ri));
BOOST_CHECK(f == ri);
BOOST_CHECK(boost::ref(ri) == f);
BOOST_CHECK(!(f != boost::ref(ri)));
BOOST_CHECK(!(f != ri));
BOOST_CHECK(!(boost::ref(ri) != f));
#if !(defined(__GNUC__) && __GNUC__ == 3 && __GNUC_MINOR__ <= 3)
BOOST_CHECK(ri == f);
BOOST_CHECK(!(ri != f));
#endif
// Values equal, references inequal
ReturnInt ri2(17);
BOOST_CHECK(f == ri2);
BOOST_CHECK(f != boost::ref(ri2));
BOOST_CHECK(boost::ref(ri2) != f);
BOOST_CHECK(!(f != ri2));
BOOST_CHECK(!(f == boost::ref(ri2)));
BOOST_CHECK(!(boost::ref(ri2) == f));
#if !(defined(__GNUC__) && __GNUC__ == 3 && __GNUC_MINOR__ <= 3)
BOOST_CHECK(ri2 == f);
BOOST_CHECK(!(ri2 != f));
#endif
}
#if !defined(BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX)
{
ReturnInt ri(17);
boost::function<int(void)> f = boost::ref(ri);
// References and values are equal
BOOST_CHECK(f == boost::ref(ri));
BOOST_CHECK(f == ri);
BOOST_CHECK(boost::ref(ri) == f);
BOOST_CHECK(!(f != boost::ref(ri)));
BOOST_CHECK(!(f != ri));
BOOST_CHECK(!(boost::ref(ri) != f));
# if !(defined(__GNUC__) && __GNUC__ == 3 && __GNUC_MINOR__ <= 3)
BOOST_CHECK(ri == f);
BOOST_CHECK(!(ri != f));
# endif
// Values equal, references inequal
ReturnInt ri2(17);
BOOST_CHECK(f == ri2);
BOOST_CHECK(f != boost::ref(ri2));
BOOST_CHECK(boost::ref(ri2) != f);
BOOST_CHECK(!(f != ri2));
BOOST_CHECK(!(f == boost::ref(ri2)));
BOOST_CHECK(!(boost::ref(ri2) == f));
# if !(defined(__GNUC__) && __GNUC__ == 3 && __GNUC_MINOR__ <= 3)
BOOST_CHECK(ri2 == f);
BOOST_CHECK(!(ri2 != f));
# endif
}
#endif
}
int main()
{
target_test();
equal_test();
ref_equal_test();
return boost::report_errors();
}

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// Boost.Function library
// Copyright Douglas Gregor 2002-2003. Use, modification and
// distribution is 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)
// For more information, see http://www.boost.org
// Make sure we don't try to redefine function2
#include <boost/function/function2.hpp>
// Define all Boost.Function class templates up to 30 arguments
#define BOOST_FUNCTION_MAX_ARGS 30
#include <boost/function.hpp>
int main()
{
boost::function0<float> f0;
boost::function30<float, int, int, int, int, int, int, int, int, int, int,
int, int, int, int, int, int, int, int, int, int,
int, int, int, int, int, int, int, int, int, int> f30;
return 0;
}

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// Boost.Function library
// Copyright Douglas Gregor 2002-2003. Use, modification and
// distribution is 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)
// For more information, see http://www.boost.org
// Make sure we don't try to redefine function2
#include <boost/function/function2.hpp>
// Define all Boost.Function class templates up to 30 arguments
#define BOOST_FUNCTION_MAX_ARGS 20
#include <boost/function.hpp>
#undef BOOST_FUNCTION_MAX_ARGS
#define BOOST_FUNCTION_MAX_ARGS 40
#include <boost/function.hpp>
#undef BOOST_FUNCTION_MAX_ARGS
#define BOOST_FUNCTION_MAX_ARGS 25
#include <boost/function.hpp>
#undef BOOST_FUNCTION_MAX_ARGS
#define BOOST_FUNCTION_MAX_ARGS 30
#include <boost/function.hpp>
#include <boost/function.hpp>
int main()
{
boost::function0<float> f0;
boost::function30<float, int, int, int, int, int, int, int, int, int, int,
int, int, int, int, int, int, int, int, int, int,
int, int, int, int, int, int, int, int, int, int> f30;
return 0;
}

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// Function library
// Copyright (C) 2001-2003 Douglas Gregor
// Use, modification and distribution is 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)
// For more information, see http://www.boost.org/
#include <boost/function.hpp>
#include <iostream>
float mul_ints(int x, int y) { return ((float)x) * y; }
struct int_div {
float operator()(int x, int y) const { return ((float)x)/y; };
};
int main()
{
boost::function<float (int x, int y)> f;
f = int_div();
std::cout << f(5, 3) << std::endl;
if (f)
std::cout << f(5, 3) << std::endl;
else
std::cout << "f has no target, so it is unsafe to call" << std::endl;
f = 0;
f = &mul_ints;
return 0;
}

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// Function library
// Copyright (C) 2001-2003 Douglas Gregor
// Use, modification and distribution is 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)
// For more information, see http://www.boost.org/
#include <boost/function.hpp>
#include <iostream>
float mul_ints(int x, int y) { return ((float)x) * y; }
struct int_div {
float operator()(int x, int y) const { return ((float)x)/y; };
};
int main()
{
boost::function2<float, int, int> f;
f = int_div();
std::cout << f(5, 3) << std::endl;
if (f)
std::cout << f(5, 3) << std::endl;
else
std::cout << "f has no target, so it is unsafe to call" << std::endl;
f = 0;
f = &mul_ints;
return 0;
}

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// Boost.Function library
// Copyright Douglas Gregor 2001-2003. Use, modification and
// distribution is 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)
// For more information, see http://www.boost.org
#if defined(__clang__) && defined(__has_warning)
# if __has_warning( "-Wself-assign-overloaded" )
# pragma clang diagnostic ignored "-Wself-assign-overloaded"
# endif
#endif
#include <boost/function.hpp>
#include <boost/core/lightweight_test.hpp>
#include <functional>
#include <cassert>
#include <string>
#define BOOST_CHECK BOOST_TEST
using namespace boost;
using std::string;
using std::negate;
int global_int;
struct write_five_obj { void operator()() const { global_int = 5; } };
struct write_three_obj { int operator()() const { global_int = 3; return 7; }};
static void write_five() { global_int = 5; }
static void write_three() { global_int = 3; }
struct generate_five_obj { int operator()() const { return 5; } };
struct generate_three_obj { int operator()() const { return 3; } };
static int generate_five() { return 5; }
static int generate_three() { return 3; }
static string identity_str(const string& s) { return s; }
static string string_cat(const string& s1, const string& s2) { return s1+s2; }
static int sum_ints(int x, int y) { return x+y; }
struct write_const_1_nonconst_2
{
void operator()() { global_int = 2; }
void operator()() const { global_int = 1; }
};
struct add_to_obj
{
add_to_obj(int v) : value(v) {}
int operator()(int x) const { return value + x; }
int value;
};
static void
test_zero_args()
{
typedef function0<void> func_void_type;
write_five_obj five = write_five_obj(); // Initialization for Borland C++ 5.5
write_three_obj three = write_three_obj(); // Ditto
// Default construction
func_void_type v1;
BOOST_CHECK(v1.empty());
// Assignment to an empty function
v1 = five;
BOOST_CHECK(!v1.empty());
// Invocation of a function
global_int = 0;
v1();
BOOST_CHECK(global_int == 5);
// clear() method
v1.clear();
BOOST_CHECK(!v1);
// Assignment to an empty function
v1 = three;
BOOST_CHECK(!v1.empty());
// Invocation and self-assignment
global_int = 0;
v1 = v1;
v1();
BOOST_CHECK(global_int == 3);
// Assignment to a non-empty function
v1 = five;
// Invocation and self-assignment
global_int = 0;
v1 = (v1);
v1();
BOOST_CHECK(global_int == 5);
// clear
v1 = 0;
BOOST_CHECK(v1.empty());
// Assignment to an empty function from a free function
v1 = &write_five;
BOOST_CHECK(!v1.empty());
// Invocation
global_int = 0;
v1();
BOOST_CHECK(global_int == 5);
// Assignment to a non-empty function from a free function
v1 = &write_three;
BOOST_CHECK(!v1.empty());
// Invocation
global_int = 0;
v1();
BOOST_CHECK(global_int == 3);
// Assignment
v1 = five;
BOOST_CHECK(!v1.empty());
// Invocation
global_int = 0;
v1();
BOOST_CHECK(global_int == 5);
// Assignment to a non-empty function from a free function
v1 = write_three;
BOOST_CHECK(!v1.empty());
// Invocation
global_int = 0;
v1();
BOOST_CHECK(global_int == 3);
// Construction from another function (that is empty)
v1.clear();
func_void_type v2(v1);
BOOST_CHECK(!v2? true : false);
// Assignment to an empty function
v2 = three;
BOOST_CHECK(!v2.empty());
// Invocation
global_int = 0;
v2();
BOOST_CHECK(global_int == 3);
// Assignment to a non-empty function
v2 = (five);
// Invocation
global_int = 0;
v2();
BOOST_CHECK(global_int == 5);
v2.clear();
BOOST_CHECK(v2.empty());
// Assignment to an empty function from a free function
v2 = (&write_five);
BOOST_CHECK(v2? true : false);
// Invocation
global_int = 0;
v2();
BOOST_CHECK(global_int == 5);
// Assignment to a non-empty function from a free function
v2 = &write_three;
BOOST_CHECK(!v2.empty());
// Invocation
global_int = 0;
v2();
BOOST_CHECK(global_int == 3);
// Swapping
v1 = five;
swap(v1, v2);
v2();
BOOST_CHECK(global_int == 5);
v1();
BOOST_CHECK(global_int == 3);
swap(v1, v2);
v1.clear();
// Assignment
v2 = five;
BOOST_CHECK(!v2.empty());
// Invocation
global_int = 0;
v2();
BOOST_CHECK(global_int == 5);
// Assignment to a non-empty function from a free function
v2 = &write_three;
BOOST_CHECK(!v2.empty());
// Invocation
global_int = 0;
v2();
BOOST_CHECK(global_int == 3);
// Assignment to a function from an empty function
v2 = v1;
BOOST_CHECK(v2.empty());
// Assignment to a function from a function with a functor
v1 = three;
v2 = v1;
BOOST_CHECK(!v1.empty());
BOOST_CHECK(!v2.empty());
// Invocation
global_int = 0;
v1();
BOOST_CHECK(global_int == 3);
global_int = 0;
v2();
BOOST_CHECK(global_int == 3);
// Assign to a function from a function with a function
v2 = &write_five;
v1 = v2;
BOOST_CHECK(!v1.empty());
BOOST_CHECK(!v2.empty());
global_int = 0;
v1();
BOOST_CHECK(global_int == 5);
global_int = 0;
v2();
BOOST_CHECK(global_int == 5);
// Construct a function given another function containing a function
func_void_type v3(v1);
// Invocation of a function
global_int = 0;
v3();
BOOST_CHECK(global_int == 5);
// clear() method
v3.clear();
BOOST_CHECK(!v3? true : false);
// Assignment to an empty function
v3 = three;
BOOST_CHECK(!v3.empty());
// Invocation
global_int = 0;
v3();
BOOST_CHECK(global_int == 3);
// Assignment to a non-empty function
v3 = five;
// Invocation
global_int = 0;
v3();
BOOST_CHECK(global_int == 5);
// clear()
v3.clear();
BOOST_CHECK(v3.empty());
// Assignment to an empty function from a free function
v3 = &write_five;
BOOST_CHECK(!v3.empty());
// Invocation
global_int = 0;
v3();
BOOST_CHECK(global_int == 5);
// Assignment to a non-empty function from a free function
v3 = &write_three;
BOOST_CHECK(!v3.empty());
// Invocation
global_int = 0;
v3();
BOOST_CHECK(global_int == 3);
// Assignment
v3 = five;
BOOST_CHECK(!v3.empty());
// Invocation
global_int = 0;
v3();
BOOST_CHECK(global_int == 5);
// Construction of a function from a function containing a functor
func_void_type v4(v3);
// Invocation of a function
global_int = 0;
v4();
BOOST_CHECK(global_int == 5);
// clear() method
v4.clear();
BOOST_CHECK(v4.empty());
// Assignment to an empty function
v4 = three;
BOOST_CHECK(!v4.empty());
// Invocation
global_int = 0;
v4();
BOOST_CHECK(global_int == 3);
// Assignment to a non-empty function
v4 = five;
// Invocation
global_int = 0;
v4();
BOOST_CHECK(global_int == 5);
// clear()
v4.clear();
BOOST_CHECK(v4.empty());
// Assignment to an empty function from a free function
v4 = &write_five;
BOOST_CHECK(!v4.empty());
// Invocation
global_int = 0;
v4();
BOOST_CHECK(global_int == 5);
// Assignment to a non-empty function from a free function
v4 = &write_three;
BOOST_CHECK(!v4.empty());
// Invocation
global_int = 0;
v4();
BOOST_CHECK(global_int == 3);
// Assignment
v4 = five;
BOOST_CHECK(!v4.empty());
// Invocation
global_int = 0;
v4();
BOOST_CHECK(global_int == 5);
// Construction of a function from a functor
func_void_type v5(five);
// Invocation of a function
global_int = 0;
v5();
BOOST_CHECK(global_int == 5);
// clear() method
v5.clear();
BOOST_CHECK(v5.empty());
// Assignment to an empty function
v5 = three;
BOOST_CHECK(!v5.empty());
// Invocation
global_int = 0;
v5();
BOOST_CHECK(global_int == 3);
// Assignment to a non-empty function
v5 = five;
// Invocation
global_int = 0;
v5();
BOOST_CHECK(global_int == 5);
// clear()
v5.clear();
BOOST_CHECK(v5.empty());
// Assignment to an empty function from a free function
v5 = &write_five;
BOOST_CHECK(!v5.empty());
// Invocation
global_int = 0;
v5();
BOOST_CHECK(global_int == 5);
// Assignment to a non-empty function from a free function
v5 = &write_three;
BOOST_CHECK(!v5.empty());
// Invocation
global_int = 0;
v5();
BOOST_CHECK(global_int == 3);
// Assignment
v5 = five;
BOOST_CHECK(!v5.empty());
// Invocation
global_int = 0;
v5();
BOOST_CHECK(global_int == 5);
// Construction of a function from a function
func_void_type v6(&write_five);
// Invocation of a function
global_int = 0;
v6();
BOOST_CHECK(global_int == 5);
// clear() method
v6.clear();
BOOST_CHECK(v6.empty());
// Assignment to an empty function
v6 = three;
BOOST_CHECK(!v6.empty());
// Invocation
global_int = 0;
v6();
BOOST_CHECK(global_int == 3);
// Assignment to a non-empty function
v6 = five;
// Invocation
global_int = 0;
v6();
BOOST_CHECK(global_int == 5);
// clear()
v6.clear();
BOOST_CHECK(v6.empty());
// Assignment to an empty function from a free function
v6 = &write_five;
BOOST_CHECK(!v6.empty());
// Invocation
global_int = 0;
v6();
BOOST_CHECK(global_int == 5);
// Assignment to a non-empty function from a free function
v6 = &write_three;
BOOST_CHECK(!v6.empty());
// Invocation
global_int = 0;
v6();
BOOST_CHECK(global_int == 3);
// Assignment
v6 = five;
BOOST_CHECK(!v6.empty());
// Invocation
global_int = 0;
v6();
BOOST_CHECK(global_int == 5);
// Const vs. non-const
// Initialization for Borland C++ 5.5
write_const_1_nonconst_2 one_or_two = write_const_1_nonconst_2();
const function0<void> v7(one_or_two);
function0<void> v8(one_or_two);
global_int = 0;
v7();
BOOST_CHECK(global_int == 2);
global_int = 0;
v8();
BOOST_CHECK(global_int == 2);
// Test construction from 0 and comparison to 0
func_void_type v9(0);
BOOST_CHECK(v9 == 0);
# if !defined(__SUNPRO_CC) || __SUNPRO_CC > 0x540 || defined(BOOST_STRICT_CONFIG)
BOOST_CHECK(0 == v9);
#else
BOOST_CHECK(v9.empty());
#endif
// Test return values
typedef function0<int> func_int_type;
// Initialization for Borland C++ 5.5
generate_five_obj gen_five = generate_five_obj();
generate_three_obj gen_three = generate_three_obj();
func_int_type i0(gen_five);
BOOST_CHECK(i0() == 5);
i0 = gen_three;
BOOST_CHECK(i0() == 3);
i0 = &generate_five;
BOOST_CHECK(i0() == 5);
i0 = &generate_three;
BOOST_CHECK(i0() == 3);
BOOST_CHECK(i0? true : false);
i0.clear();
BOOST_CHECK(!i0? true : false);
// Test return values with compatible types
typedef function0<long> func_long_type;
func_long_type i1(gen_five);
BOOST_CHECK(i1() == 5);
i1 = gen_three;
BOOST_CHECK(i1() == 3);
i1 = &generate_five;
BOOST_CHECK(i1() == 5);
i1 = &generate_three;
BOOST_CHECK(i1() == 3);
BOOST_CHECK(i1? true : false);
i1.clear();
BOOST_CHECK(!i1? true : false);
}
static void
test_one_arg()
{
negate<int> neg = negate<int>(); // Initialization for Borland C++ 5.5
function1<int, int> f1(neg);
BOOST_CHECK(f1(5) == -5);
function1<string, string> id(&identity_str);
BOOST_CHECK(id("str") == "str");
function1<std::string, const char*> id2(&identity_str);
BOOST_CHECK(id2("foo") == "foo");
add_to_obj add_to(5);
function1<int, int> f2(add_to);
BOOST_CHECK(f2(3) == 8);
const function1<int, int> cf2(add_to);
BOOST_CHECK(cf2(3) == 8);
}
static void
test_two_args()
{
function2<string, const string&, const string&> cat(&string_cat);
BOOST_CHECK(cat("str", "ing") == "string");
function2<int, short, short> sum(&sum_ints);
BOOST_CHECK(sum(2, 3) == 5);
}
static void
test_emptiness()
{
function0<float> f1;
BOOST_CHECK(f1.empty());
function0<float> f2;
f2 = f1;
BOOST_CHECK(f2.empty());
function0<double> f3;
f3 = f2;
BOOST_CHECK(f3.empty());
}
struct X {
X(int v) : value(v) {}
int twice() const { return 2*value; }
int plus(int v) { return value + v; }
int value;
};
static void
test_member_functions()
{
boost::function1<int, X*> f1(&X::twice);
X one(1);
X five(5);
BOOST_CHECK(f1(&one) == 2);
BOOST_CHECK(f1(&five) == 10);
boost::function1<int, X*> f1_2;
f1_2 = &X::twice;
BOOST_CHECK(f1_2(&one) == 2);
BOOST_CHECK(f1_2(&five) == 10);
boost::function2<int, X&, int> f2(&X::plus);
BOOST_CHECK(f2(one, 3) == 4);
BOOST_CHECK(f2(five, 4) == 9);
}
struct add_with_throw_on_copy {
int operator()(int x, int y) const { return x+y; }
add_with_throw_on_copy() {}
add_with_throw_on_copy(const add_with_throw_on_copy&)
{
throw std::runtime_error("But this CAN'T throw");
}
add_with_throw_on_copy& operator=(const add_with_throw_on_copy&)
{
throw std::runtime_error("But this CAN'T throw");
}
};
static void
test_ref()
{
add_with_throw_on_copy atc;
try {
boost::function2<int, int, int> f(ref(atc));
BOOST_CHECK(f(1, 3) == 4);
}
catch(std::runtime_error const&) {
BOOST_ERROR("Nonthrowing constructor threw an exception");
}
}
static unsigned construction_count = 0;
static unsigned destruction_count = 0;
struct MySmallFunctor {
MySmallFunctor() { ++construction_count; }
MySmallFunctor(const MySmallFunctor &) { ++construction_count; }
~MySmallFunctor() { ++destruction_count; }
int operator()() { return 0; }
};
struct MyLargeFunctor {
MyLargeFunctor() { ++construction_count; }
MyLargeFunctor(const MyLargeFunctor &) { ++construction_count; }
~MyLargeFunctor() { ++destruction_count; }
int operator()() { return 0; }
float data[128];
};
void test_construct_destroy_count()
{
{
boost::function0<int> f;
boost::function0<int> g;
f = MySmallFunctor();
g = MySmallFunctor();
f.swap(g);
}
// MySmallFunctor objects should be constructed as many times as
// they are destroyed.
BOOST_CHECK(construction_count == destruction_count);
construction_count = 0;
destruction_count = 0;
{
boost::function0<int> f;
boost::function0<int> g;
f = MyLargeFunctor();
g = MyLargeFunctor();
f.swap(g);
}
// MyLargeFunctor objects should be constructed as many times as
// they are destroyed.
BOOST_CHECK(construction_count == destruction_count);
}
int main()
{
test_zero_args();
test_one_arg();
test_two_args();
test_emptiness();
test_member_functions();
test_ref();
test_construct_destroy_count();
return boost::report_errors();
}

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// Function library
// Copyright (C) 2001-2003 Douglas Gregor
// Use, modification and distribution is 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)
// For more information, see http://www.boost.org/
#include <boost/function.hpp>
#include <iostream>
struct stateful_type { int operator()(int) const { return 0; } };
int main()
{
stateful_type a_function_object;
boost::function<int (int)> f;
f = boost::ref(a_function_object);
boost::function<int (int)> f2(f);
return 0;
}

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// Function library
// Copyright (C) 2001-2003 Douglas Gregor
// Use, modification and distribution is 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)
// For more information, see http://www.boost.org/
#include <boost/function.hpp>
#include <iostream>
struct stateful_type { int operator()(int) const { return 0; } };
int main()
{
stateful_type a_function_object;
boost::function1<int, int> f;
f = boost::ref(a_function_object);
boost::function1<int, int> f2(f);
return 0;
}

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// Boost.Function library
// Copyright Douglas Gregor 2001-2003. Use, modification and
// distribution is 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)
// For more information, see http://www.boost.org
#if defined(__clang__) && defined(__has_warning)
# if __has_warning( "-Wself-assign-overloaded" )
# pragma clang diagnostic ignored "-Wself-assign-overloaded"
# endif
#endif
#include <boost/function.hpp>
#include <boost/core/lightweight_test.hpp>
#include <functional>
#include <string>
#include <utility>
#define BOOST_CHECK BOOST_TEST
using boost::function;
using std::string;
int global_int;
struct write_five_obj { void operator()() const { global_int = 5; } };
struct write_three_obj { int operator()() const { global_int = 3; return 7; }};
static void write_five() { global_int = 5; }
static void write_three() { global_int = 3; }
struct generate_five_obj { int operator()() const { return 5; } };
struct generate_three_obj { int operator()() const { return 3; } };
static int generate_five() { return 5; }
static int generate_three() { return 3; }
static string identity_str(const string& s) { return s; }
static string string_cat(const string& s1, const string& s2) { return s1+s2; }
static int sum_ints(int x, int y) { return x+y; }
struct write_const_1_nonconst_2
{
void operator()() { global_int = 2; }
void operator()() const { global_int = 1; }
};
struct add_to_obj
{
add_to_obj(int v) : value(v) {}
int operator()(int x) const { return value + x; }
int value;
};
static void
test_zero_args()
{
typedef function<void ()> func_void_type;
write_five_obj five;
write_three_obj three;
// Default construction
func_void_type v1;
BOOST_CHECK(v1.empty());
// Assignment to an empty function
v1 = five;
BOOST_CHECK(v1 != 0);
// Invocation of a function
global_int = 0;
v1();
BOOST_CHECK(global_int == 5);
// clear() method
v1.clear();
BOOST_CHECK(v1 == 0);
// Assignment to an empty function
v1 = three;
BOOST_CHECK(!v1.empty());
// Invocation and self-assignment
global_int = 0;
v1 = v1;
v1();
BOOST_CHECK(global_int == 3);
// Assignment to a non-empty function
v1 = five;
// Invocation and self-assignment
global_int = 0;
v1 = (v1);
v1();
BOOST_CHECK(global_int == 5);
// clear
v1 = 0;
BOOST_CHECK(0 == v1);
// Assignment to an empty function from a free function
v1 = BOOST_FUNCTION_TARGET_FIX(&) write_five;
BOOST_CHECK(0 != v1);
// Invocation
global_int = 0;
v1();
BOOST_CHECK(global_int == 5);
// Assignment to a non-empty function from a free function
v1 = BOOST_FUNCTION_TARGET_FIX(&) write_three;
BOOST_CHECK(!v1.empty());
// Invocation
global_int = 0;
v1();
BOOST_CHECK(global_int == 3);
// Assignment
v1 = five;
BOOST_CHECK(!v1.empty());
// Invocation
global_int = 0;
v1();
BOOST_CHECK(global_int == 5);
// Assignment to a non-empty function from a free function
v1 = &write_three;
BOOST_CHECK(!v1.empty());
// Invocation
global_int = 0;
v1();
BOOST_CHECK(global_int == 3);
// Construction from another function (that is empty)
v1.clear();
func_void_type v2(v1);
BOOST_CHECK(!v2? true : false);
// Assignment to an empty function
v2 = three;
BOOST_CHECK(!v2.empty());
// Invocation
global_int = 0;
v2();
BOOST_CHECK(global_int == 3);
// Assignment to a non-empty function
v2 = (five);
// Invocation
global_int = 0;
v2();
BOOST_CHECK(global_int == 5);
v2.clear();
BOOST_CHECK(v2.empty());
// Assignment to an empty function from a free function
v2 = (BOOST_FUNCTION_TARGET_FIX(&) write_five);
BOOST_CHECK(v2? true : false);
// Invocation
global_int = 0;
v2();
BOOST_CHECK(global_int == 5);
// Assignment to a non-empty function from a free function
v2 = BOOST_FUNCTION_TARGET_FIX(&) write_three;
BOOST_CHECK(!v2.empty());
// Invocation
global_int = 0;
v2();
BOOST_CHECK(global_int == 3);
// Swapping
v1 = five;
swap(v1, v2);
v2();
BOOST_CHECK(global_int == 5);
v1();
BOOST_CHECK(global_int == 3);
swap(v1, v2);
v1.clear();
// Assignment
v2 = five;
BOOST_CHECK(!v2.empty());
// Invocation
global_int = 0;
v2();
BOOST_CHECK(global_int == 5);
// Assignment to a non-empty function from a free function
v2 = &write_three;
BOOST_CHECK(!v2.empty());
// Invocation
global_int = 0;
v2();
BOOST_CHECK(global_int == 3);
// Assignment to a function from an empty function
v2 = v1;
BOOST_CHECK(v2.empty());
// Assignment to a function from a function with a functor
v1 = three;
v2 = v1;
BOOST_CHECK(!v1.empty());
BOOST_CHECK(!v2.empty());
// Invocation
global_int = 0;
v1();
BOOST_CHECK(global_int == 3);
global_int = 0;
v2();
BOOST_CHECK(global_int == 3);
// Assign to a function from a function with a function
v2 = BOOST_FUNCTION_TARGET_FIX(&) write_five;
v1 = v2;
BOOST_CHECK(!v1.empty());
BOOST_CHECK(!v2.empty());
global_int = 0;
v1();
BOOST_CHECK(global_int == 5);
global_int = 0;
v2();
BOOST_CHECK(global_int == 5);
// Construct a function given another function containing a function
func_void_type v3(v1);
// Invocation of a function
global_int = 0;
v3();
BOOST_CHECK(global_int == 5);
// clear() method
v3.clear();
BOOST_CHECK(!v3? true : false);
// Assignment to an empty function
v3 = three;
BOOST_CHECK(!v3.empty());
// Invocation
global_int = 0;
v3();
BOOST_CHECK(global_int == 3);
// Assignment to a non-empty function
v3 = five;
// Invocation
global_int = 0;
v3();
BOOST_CHECK(global_int == 5);
// clear()
v3.clear();
BOOST_CHECK(v3.empty());
// Assignment to an empty function from a free function
v3 = &write_five;
BOOST_CHECK(!v3.empty());
// Invocation
global_int = 0;
v3();
BOOST_CHECK(global_int == 5);
// Assignment to a non-empty function from a free function
v3 = &write_three;
BOOST_CHECK(!v3.empty());
// Invocation
global_int = 0;
v3();
BOOST_CHECK(global_int == 3);
// Assignment
v3 = five;
BOOST_CHECK(!v3.empty());
// Invocation
global_int = 0;
v3();
BOOST_CHECK(global_int == 5);
// Construction of a function from a function containing a functor
func_void_type v4(v3);
// Invocation of a function
global_int = 0;
v4();
BOOST_CHECK(global_int == 5);
// clear() method
v4.clear();
BOOST_CHECK(v4.empty());
// Assignment to an empty function
v4 = three;
BOOST_CHECK(!v4.empty());
// Invocation
global_int = 0;
v4();
BOOST_CHECK(global_int == 3);
// Assignment to a non-empty function
v4 = five;
// Invocation
global_int = 0;
v4();
BOOST_CHECK(global_int == 5);
// clear()
v4.clear();
BOOST_CHECK(v4.empty());
// Assignment to an empty function from a free function
v4 = &write_five;
BOOST_CHECK(!v4.empty());
// Invocation
global_int = 0;
v4();
BOOST_CHECK(global_int == 5);
// Assignment to a non-empty function from a free function
v4 = &write_three;
BOOST_CHECK(!v4.empty());
// Invocation
global_int = 0;
v4();
BOOST_CHECK(global_int == 3);
// Assignment
v4 = five;
BOOST_CHECK(!v4.empty());
// Invocation
global_int = 0;
v4();
BOOST_CHECK(global_int == 5);
// Construction of a function from a functor
func_void_type v5(five);
// Invocation of a function
global_int = 0;
v5();
BOOST_CHECK(global_int == 5);
// clear() method
v5.clear();
BOOST_CHECK(v5.empty());
// Assignment to an empty function
v5 = three;
BOOST_CHECK(!v5.empty());
// Invocation
global_int = 0;
v5();
BOOST_CHECK(global_int == 3);
// Assignment to a non-empty function
v5 = five;
// Invocation
global_int = 0;
v5();
BOOST_CHECK(global_int == 5);
// clear()
v5.clear();
BOOST_CHECK(v5.empty());
// Assignment to an empty function from a free function
v5 = &write_five;
BOOST_CHECK(!v5.empty());
// Invocation
global_int = 0;
v5();
BOOST_CHECK(global_int == 5);
// Assignment to a non-empty function from a free function
v5 = &write_three;
BOOST_CHECK(!v5.empty());
// Invocation
global_int = 0;
v5();
BOOST_CHECK(global_int == 3);
// Assignment
v5 = five;
BOOST_CHECK(!v5.empty());
// Invocation
global_int = 0;
v5();
BOOST_CHECK(global_int == 5);
// Construction of a function from a function
func_void_type v6(&write_five);
// Invocation of a function
global_int = 0;
v6();
BOOST_CHECK(global_int == 5);
// clear() method
v6.clear();
BOOST_CHECK(v6.empty());
// Assignment to an empty function
v6 = three;
BOOST_CHECK(!v6.empty());
// Invocation
global_int = 0;
v6();
BOOST_CHECK(global_int == 3);
// Assignment to a non-empty function
v6 = five;
// Invocation
global_int = 0;
v6();
BOOST_CHECK(global_int == 5);
// clear()
v6.clear();
BOOST_CHECK(v6.empty());
// Assignment to an empty function from a free function
v6 = &write_five;
BOOST_CHECK(!v6.empty());
// Invocation
global_int = 0;
v6();
BOOST_CHECK(global_int == 5);
// Assignment to a non-empty function from a free function
v6 = &write_three;
BOOST_CHECK(!v6.empty());
// Invocation
global_int = 0;
v6();
BOOST_CHECK(global_int == 3);
// Assignment
v6 = five;
BOOST_CHECK(!v6.empty());
// Invocation
global_int = 0;
v6();
BOOST_CHECK(global_int == 5);
// Const vs. non-const
write_const_1_nonconst_2 one_or_two;
const function<void ()> v7(one_or_two);
function<void ()> v8(one_or_two);
global_int = 0;
v7();
BOOST_CHECK(global_int == 2);
global_int = 0;
v8();
BOOST_CHECK(global_int == 2);
// Test construction from 0 and comparison to 0
func_void_type v9(0);
BOOST_CHECK(v9 == 0);
BOOST_CHECK(0 == v9);
// Test return values
typedef function<int ()> func_int_type;
generate_five_obj gen_five;
generate_three_obj gen_three;
func_int_type i0(gen_five);
BOOST_CHECK(i0() == 5);
i0 = gen_three;
BOOST_CHECK(i0() == 3);
i0 = &generate_five;
BOOST_CHECK(i0() == 5);
i0 = &generate_three;
BOOST_CHECK(i0() == 3);
BOOST_CHECK(i0? true : false);
i0.clear();
BOOST_CHECK(!i0? true : false);
// Test return values with compatible types
typedef function<long ()> func_long_type;
func_long_type i1(gen_five);
BOOST_CHECK(i1() == 5);
i1 = gen_three;
BOOST_CHECK(i1() == 3);
i1 = &generate_five;
BOOST_CHECK(i1() == 5);
i1 = &generate_three;
BOOST_CHECK(i1() == 3);
BOOST_CHECK(i1? true : false);
i1.clear();
BOOST_CHECK(!i1? true : false);
}
static void
test_one_arg()
{
std::negate<int> neg;
function<int (int)> f1(neg);
BOOST_CHECK(f1(5) == -5);
function<string (string)> id(&identity_str);
BOOST_CHECK(id("str") == "str");
function<string (const char*)> id2(&identity_str);
BOOST_CHECK(id2("foo") == "foo");
add_to_obj add_to(5);
function<int (int)> f2(add_to);
BOOST_CHECK(f2(3) == 8);
const function<int (int)> cf2(add_to);
BOOST_CHECK(cf2(3) == 8);
}
static void
test_two_args()
{
function<string (const string&, const string&)> cat(&string_cat);
BOOST_CHECK(cat("str", "ing") == "string");
function<int (short, short)> sum(&sum_ints);
BOOST_CHECK(sum(2, 3) == 5);
}
static void
test_emptiness()
{
function<float ()> f1;
BOOST_CHECK(f1.empty());
function<float ()> f2;
f2 = f1;
BOOST_CHECK(f2.empty());
function<double ()> f3;
f3 = f2;
BOOST_CHECK(f3.empty());
}
struct X {
X(int v) : value(v) {}
int twice() const { return 2*value; }
int plus(int v) { return value + v; }
int value;
};
static void
test_member_functions()
{
boost::function<int (X*)> f1(&X::twice);
X one(1);
X five(5);
BOOST_CHECK(f1(&one) == 2);
BOOST_CHECK(f1(&five) == 10);
boost::function<int (X*)> f1_2;
f1_2 = &X::twice;
BOOST_CHECK(f1_2(&one) == 2);
BOOST_CHECK(f1_2(&five) == 10);
boost::function<int (X&, int)> f2(&X::plus);
BOOST_CHECK(f2(one, 3) == 4);
BOOST_CHECK(f2(five, 4) == 9);
}
struct add_with_throw_on_copy {
int operator()(int x, int y) const { return x+y; }
add_with_throw_on_copy() {}
add_with_throw_on_copy(const add_with_throw_on_copy&)
{
throw std::runtime_error("But this CAN'T throw");
}
add_with_throw_on_copy& operator=(const add_with_throw_on_copy&)
{
throw std::runtime_error("But this CAN'T throw");
}
};
static void
test_ref()
{
add_with_throw_on_copy atc;
try {
boost::function<int (int, int)> f(boost::ref(atc));
BOOST_CHECK(f(1, 3) == 4);
}
catch(std::runtime_error const&) {
BOOST_ERROR("Nonthrowing constructor threw an exception");
}
}
#if BOOST_WORKAROUND(BOOST_GCC, >= 70000 && BOOST_GCC < 80000) && __cplusplus >= 201700
// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81311
#pragma message("Skipping test_empty_ref on g++ 7 -std=c++17")
static void test_empty_ref()
{
}
#else
static void dummy() {}
static void test_empty_ref()
{
boost::function<void()> f1;
boost::function<void()> f2(boost::ref(f1));
try {
f2();
BOOST_ERROR("Exception didn't throw for reference to empty function.");
}
catch(std::runtime_error const&) {}
f1 = dummy;
try {
f2();
}
catch(std::runtime_error const&) {
BOOST_ERROR("Error calling referenced function.");
}
}
#endif
static void test_exception()
{
boost::function<int (int, int)> f;
try {
f(5, 4);
BOOST_CHECK(false);
}
catch(boost::bad_function_call const&) {
// okay
}
}
typedef boost::function< void * (void * reader) > reader_type;
typedef std::pair<int, reader_type> mapped_type;
static void test_implicit()
{
mapped_type m;
m = mapped_type();
}
static void test_call_obj(boost::function<int (int, int)> f)
{
BOOST_CHECK(!f.empty());
}
static void test_call_cref(const boost::function<int (int, int)>& f)
{
BOOST_CHECK(!f.empty());
}
static void test_call()
{
test_call_obj(std::plus<int>());
test_call_cref(std::plus<int>());
}
struct big_aggregating_structure {
int disable_small_objects_optimizations[32];
big_aggregating_structure()
{
++ global_int;
}
big_aggregating_structure(const big_aggregating_structure&)
{
++ global_int;
}
~big_aggregating_structure()
{
-- global_int;
}
void operator()()
{
++ global_int;
}
void operator()(int)
{
++ global_int;
}
};
template <class FunctionT>
static void test_move_semantics()
{
typedef FunctionT f1_type;
big_aggregating_structure obj;
f1_type f1 = obj;
global_int = 0;
f1();
BOOST_CHECK(!f1.empty());
BOOST_CHECK(global_int == 1);
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
// Testing rvalue constructors
f1_type f2(static_cast<f1_type&&>(f1));
BOOST_CHECK(f1.empty());
BOOST_CHECK(!f2.empty());
BOOST_CHECK(global_int == 1);
f2();
BOOST_CHECK(global_int == 2);
f1_type f3(static_cast<f1_type&&>(f2));
BOOST_CHECK(f1.empty());
BOOST_CHECK(f2.empty());
BOOST_CHECK(!f3.empty());
BOOST_CHECK(global_int == 2);
f3();
BOOST_CHECK(global_int == 3);
// Testing move assignment
f1_type f4;
BOOST_CHECK(f4.empty());
f4 = static_cast<f1_type&&>(f3);
BOOST_CHECK(f1.empty());
BOOST_CHECK(f2.empty());
BOOST_CHECK(f3.empty());
BOOST_CHECK(!f4.empty());
BOOST_CHECK(global_int == 3);
f4();
BOOST_CHECK(global_int == 4);
// Testing self move assignment
f4 = static_cast<f1_type&&>(f4);
BOOST_CHECK(!f4.empty());
BOOST_CHECK(global_int == 4);
// Testing, that no memory leaked when assigning to nonempty function
f4 = obj;
BOOST_CHECK(!f4.empty());
BOOST_CHECK(global_int == 4);
f1_type f5 = obj;
BOOST_CHECK(global_int == 5);
f4 = static_cast<f1_type&&>(f5);
BOOST_CHECK(global_int == 4);
#endif
}
int main()
{
test_zero_args();
test_one_arg();
test_two_args();
test_emptiness();
test_member_functions();
test_ref();
test_empty_ref();
test_exception();
test_implicit();
test_call();
test_move_semantics<function<void()> >();
test_move_semantics<boost::function0<void> >();
return boost::report_errors();
}

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// Boost.Function library
// Copyright (C) Douglas Gregor 2001-2005. Use, modification and
// distribution is 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)
// For more information, see http://www.boost.org
#include <boost/function.hpp>
void test()
{
boost::function0<int> f1;
boost::function0<int> f2;
if( f1 == f2 ) {}
}

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// Boost.Function library
// Copyright (C) Douglas Gregor 2001-2005. Use, modification and
// distribution is 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)
// For more information, see http://www.boost.org
#include <boost/function.hpp>
static int bad_fn(float f) { return static_cast<int>(f); }
void test()
{
boost::function0<int> f1;
f1 = bad_fn;
}

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// Boost.Function library
// Copyright Douglas Gregor 2008. Use, modification and
// distribution is 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)
// For more information, see http://www.boost.org
#include <boost/function/function_typeof.hpp>
#include <boost/function.hpp>
#include <boost/typeof/typeof.hpp>
#include <boost/type_traits/is_same.hpp>
#include <boost/static_assert.hpp>
void f(boost::function0<void> f, boost::function0<void> g)
{
BOOST_STATIC_ASSERT((boost::is_same<boost::function0<void>, BOOST_TYPEOF(f = g)>::value));
}

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// Boost.Function library
// Copyright Douglas Gregor 2002-2003. Use, modification and
// distribution is 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)
// For more information, see http://www.boost.org
#include <boost/function.hpp>
#include <boost/lambda/lambda.hpp>
#include <boost/lambda/bind.hpp>
#include <boost/core/lightweight_test.hpp>
#include <iostream>
#include <cstdlib>
static unsigned
func_impl(int arg1, bool arg2, double arg3)
{
using namespace std;
return abs (static_cast<int>((arg2 ? arg1 : 2 * arg1) * arg3));
}
int main()
{
using boost::function;
using namespace boost::lambda;
function <unsigned(bool, double)> f1 = bind(func_impl, 15, _1, _2);
BOOST_TEST_EQ( f1(true, 2.0), 30 );
function <unsigned(double)> f2 = boost::lambda::bind(f1, false, _1);
BOOST_TEST_EQ( f2(2.0), 60 );
function <unsigned()> f3 = boost::lambda::bind(f2, 4.0);
BOOST_TEST_EQ( f3(), 120 );
return boost::report_errors();
}

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// Function library
// Copyright (C) 2001-2003 Douglas Gregor
// Use, modification and distribution is 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)
// For more information, see http://www.boost.org/
#include <boost/function.hpp>
#include <boost/core/lightweight_test.hpp>
#include <iostream>
#include <functional>
struct Y {
Y(int y = 0) : y_(y) {}
bool operator==(const Y& rhs) const { return y_ == rhs.y_; }
private:
int y_;
};
struct X {
int foo(int);
Y& foo2(Y&) const;
};
int X::foo(int x) { return -x; }
Y& X::foo2(Y& x) const { return x; }
int main()
{
boost::function<int (X*, int)> f;
boost::function<Y& (X*, Y&)> f2;
Y y1;
f = &X::foo;
f2 = &X::foo2;
X x;
BOOST_TEST(f(&x, 5) == -5);
BOOST_TEST(f2(&x, boost::ref(y1)) == y1);
return ::boost::report_errors();
}

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// Function library
// Copyright (C) 2001-2003 Douglas Gregor
// Use, modification and distribution is 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)
// For more information, see http://www.boost.org/
#include <boost/function.hpp>
#include <boost/core/lightweight_test.hpp>
#include <iostream>
#include <functional>
struct Y {
Y(int y = 0) : y_(y) {}
bool operator==(const Y& rhs) const { return y_ == rhs.y_; }
private:
int y_;
};
struct X {
int foo(int);
Y& foo2(Y&) const;
};
int X::foo(int x) { return -x; }
Y& X::foo2(Y& x) const { return x; }
int main()
{
boost::function2<int, X*, int> f;
boost::function2<Y&, X*, Y&> f2;
Y y1;
f = &X::foo;
f2 = &X::foo2;
X x;
BOOST_TEST(f(&x, 5) == -5);
BOOST_TEST(f2(&x, boost::ref(y1)) == y1);
return ::boost::report_errors();
}

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// Copyright 2018 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.
#include <boost/function.hpp>
#include <boost/config.hpp>
#if defined(MIXED_CXXSTD_DYN_LINK)
# define EXPORT BOOST_SYMBOL_EXPORT
#else
# define EXPORT
#endif
EXPORT void call_fn_1( boost::function<void()> const & fn )
{
fn();
}
EXPORT void call_fn_2( boost::function<void(int)> const & fn )
{
fn( 1 );
}
EXPORT void call_fn_3( boost::function<void(int, int)> const & fn )
{
fn( 1, 2 );
}
EXPORT void call_fn_4( boost::function0<void> const & fn )
{
fn();
}
EXPORT void call_fn_5( boost::function1<void, int> const & fn )
{
fn( 1 );
}
EXPORT void call_fn_6( boost::function2<void, int, int> const & fn )
{
fn( 1, 2 );
}

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// Boost.Function library
// Copyright Douglas Gregor 2008. Use, modification and
// distribution is 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)
// For more information, see http://www.boost.org
#include <boost/function.hpp>
#include <boost/core/lightweight_test.hpp>
#define BOOST_CHECK BOOST_TEST
struct tried_to_copy { };
struct MaybeThrowOnCopy {
MaybeThrowOnCopy(int value = 0) : value(value) { }
MaybeThrowOnCopy(const MaybeThrowOnCopy& other) : value(other.value) {
if (throwOnCopy)
throw tried_to_copy();
}
MaybeThrowOnCopy& operator=(const MaybeThrowOnCopy& other) {
if (throwOnCopy)
throw tried_to_copy();
value = other.value;
return *this;
}
int operator()() { return value; }
int value;
// Make sure that this function object doesn't trigger the
// small-object optimization in Function.
float padding[100];
static bool throwOnCopy;
};
bool MaybeThrowOnCopy::throwOnCopy = false;
int main()
{
boost::function0<int> f;
boost::function0<int> g;
MaybeThrowOnCopy::throwOnCopy = false;
f = MaybeThrowOnCopy(1);
g = MaybeThrowOnCopy(2);
BOOST_CHECK(f() == 1);
BOOST_CHECK(g() == 2);
MaybeThrowOnCopy::throwOnCopy = true;
f.swap(g);
BOOST_CHECK(f() == 2);
BOOST_CHECK(g() == 1);
return boost::report_errors();
}

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// Copyright 2019 Peter Dimov
// Use, modification and distribution is 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
#include <boost/function.hpp>
#include <boost/core/lightweight_test.hpp>
static int f( int x )
{
return x + 1;
}
int main()
{
boost::function<int(int)> fn( f );
BOOST_TEST_EQ( fn( 5 ), 6 );
return boost::report_errors();
}

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// Boost.Function regression test configuration file
// From the boost/status directory, run
// ./regression --tests ../libs/function/test/regression.cfg -o function.html
run libs/function/test/allocator_test.cpp
run libs/function/test/function_n_test.cpp
run libs/function/test/function_test.cpp
compile-fail libs/function/test/function_test_fail1.cpp
compile-fail libs/function/test/function_test_fail2.cpp
run libs/function/test/mixin_test.cpp
run libs/function/test/policy_test.cpp
run libs/function/test/stateless_test.cpp

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// Boost.Function library
// Copyright 2016 Peter Dimov
// Use, modification and distribution is 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)
#include <boost/function.hpp>
#include <boost/core/is_same.hpp>
#include <boost/core/lightweight_test_trait.hpp>
struct X
{
};
struct Y
{
};
struct Z
{
};
int main()
{
typedef boost::function<X(Y)> F1;
BOOST_TEST_TRAIT_TRUE(( boost::core::is_same<F1::result_type, X> ));
BOOST_TEST_TRAIT_TRUE(( boost::core::is_same<F1::argument_type, Y> ));
typedef boost::function<X(Y, Z)> F2;
BOOST_TEST_TRAIT_TRUE(( boost::core::is_same<F2::result_type, X> ));
BOOST_TEST_TRAIT_TRUE(( boost::core::is_same<F2::first_argument_type, Y> ));
BOOST_TEST_TRAIT_TRUE(( boost::core::is_same<F2::second_argument_type, Z> ));
return boost::report_errors();
}

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// Copyright 2018 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.
#include <boost/function.hpp>
#include <boost/config.hpp>
#if defined(RETURN_FUNCTION_DYN_LINK)
# define EXPORT BOOST_SYMBOL_EXPORT
#else
# define EXPORT
#endif
int f( int x, int y )
{
return x + y;
}
EXPORT boost::function<int(int, int)> get_fn_1()
{
return f;
}
EXPORT boost::function2<int, int, int> get_fn_2()
{
return f;
}

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// Copyright 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)
// For more information, see http://www.boost.org
#include <boost/function.hpp>
#include <boost/move/move.hpp>
#include <boost/core/lightweight_test.hpp>
#include <iostream>
#include <cstdlib>
#define BOOST_CHECK BOOST_TEST
class only_movable {
private:
BOOST_MOVABLE_BUT_NOT_COPYABLE(only_movable)
int value_;
bool moved_;
public:
only_movable(BOOST_RV_REF(only_movable) x)
: value_(x.value_)
, moved_(false)
{
x.moved_ = true;
}
only_movable& operator=(BOOST_RV_REF(only_movable) x) {
value_ = x.value_;
x.moved_ = true;
moved_ = false;
return *this;
}
explicit only_movable(int value = 0) : value_(value), moved_(false) {}
int get_value() const { return value_; }
bool is_moved() const { return moved_; }
};
int one(BOOST_RV_REF(only_movable) v) { return v.get_value(); }
only_movable two(BOOST_RV_REF(only_movable) t) {
only_movable t1 = boost::move(t);
return BOOST_MOVE_RET(only_movable, t1);
}
only_movable two_sum(BOOST_RV_REF(only_movable) t1, BOOST_RV_REF(only_movable) t2) {
only_movable ret(t1.get_value() + t2.get_value());
return BOOST_MOVE_RET(only_movable, ret);
}
struct sum_struct {
only_movable operator()(BOOST_RV_REF(only_movable) t1, BOOST_RV_REF(only_movable) t2) const {
only_movable ret(t1.get_value() + t2.get_value());
return BOOST_MOVE_RET(only_movable, ret);
}
};
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
int three(std::string&&) { return 1; }
std::string&& four(std::string&& s) { return boost::move(s); }
#endif
int main()
{
using boost::function;
function <int(BOOST_RV_REF(only_movable))> f1 = one;
only_movable om1(1);
BOOST_CHECK(f1(boost::move(om1)) == 1);
function <only_movable(BOOST_RV_REF(only_movable))> f2 = two;
only_movable om2(2);
only_movable om2_2 = f2(boost::move(om2));
BOOST_CHECK(om2_2.get_value() == 2);
BOOST_CHECK(om2.is_moved());
{
function <only_movable(BOOST_RV_REF(only_movable), BOOST_RV_REF(only_movable))> f2_sum = two_sum;
only_movable om1_sum(1), om2_sum(2);
only_movable om2_sum_2 = f2_sum(boost::move(om1_sum), boost::move(om2_sum));
BOOST_CHECK(om2_sum_2.get_value() == 3);
}
{
sum_struct s;
function <only_movable(BOOST_RV_REF(only_movable), BOOST_RV_REF(only_movable))> f2_sum = s;
only_movable om1_sum(1), om2_sum(2);
only_movable om2_sum_2 = f2_sum(boost::move(om1_sum), boost::move(om2_sum));
BOOST_CHECK(om2_sum_2.get_value() == 3);
}
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
function <int(std::string&&)> f3 = three;
function <std::string&& (std::string&& s)> f4 = four;
f3(std::string("Hello"));
BOOST_CHECK(f4(std::string("world")) == "world");
#endif
return boost::report_errors();
}

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// Boost.Function library
// Copyright Douglas Gregor 2001-2003. Use, modification and
// distribution is 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)
// For more information, see http://www.boost.org
#include <boost/function.hpp>
#include <boost/core/lightweight_test.hpp>
#include <stdexcept>
#include <new>
struct stateless_integer_add {
int operator()(int x, int y) const { return x+y; }
void* operator new(std::size_t n)
{
BOOST_ERROR( "stateless_integer_add incorrectly allocated" );
return ::operator new( n );
}
void* operator new(std::size_t, void* p)
{
return p;
}
void operator delete(void* p) throw()
{
BOOST_ERROR( "stateless_integer_add incorrectly deallocated" );
return ::operator delete( p );
}
};
int main()
{
boost::function2<int, int, int> f;
f = stateless_integer_add();
return boost::report_errors();
}

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// Function library
// Copyright (C) 2001-2003 Douglas Gregor
// Use, modification and distribution is 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)
// For more information, see http://www.boost.org/
#if defined(__clang__) && defined(__has_warning)
# if __has_warning( "-Wdeprecated-declarations" )
# pragma clang diagnostic ignored "-Wdeprecated-declarations"
# endif
#endif
#include <boost/function.hpp>
#include <iostream>
#include <functional>
struct X {
int foo(int);
};
int X::foo(int x) { return -x; }
int main()
{
#ifndef BOOST_NO_CXX98_BINDERS
boost::function<int (int)> f;
X x;
f = std::bind1st(
std::mem_fun(&X::foo), &x);
f(5); // Call x.foo(5)
#endif
return 0;
}

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// Function library
// Copyright (C) 2001-2003 Douglas Gregor
// Use, modification and distribution is 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)
// For more information, see http://www.boost.org/
#if defined(__clang__) && defined(__has_warning)
# if __has_warning( "-Wdeprecated-declarations" )
# pragma clang diagnostic ignored "-Wdeprecated-declarations"
# endif
#endif
#include <boost/function.hpp>
#include <iostream>
#include <functional>
struct X {
int foo(int);
};
int X::foo(int x) { return -x; }
int main()
{
#ifndef BOOST_NO_CXX98_BINDERS
boost::function1<int, int> f;
X x;
f = std::bind1st(
std::mem_fun(&X::foo), &x);
f(5); // Call x.foo(5)
#endif
return 0;
}

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// Function library
// Copyright (C) 2001-2003 Douglas Gregor
// Use, modification and distribution is 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)
// For more information, see http://www.boost.org/
#include <boost/function.hpp>
#include <iostream>
void do_sum_avg(int values[], int n, int& sum, float& avg)
{
sum = 0;
for (int i = 0; i < n; i++)
sum += values[i];
avg = (float)sum / n;
}
int main()
{
boost::function<void (int values[], int n, int& sum, float& avg)> sum_avg;
sum_avg = &do_sum_avg;
return 0;
}

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// Function library
// Copyright (C) 2001-2003 Douglas Gregor
// Use, modification and distribution is 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)
// For more information, see http://www.boost.org/
#include <boost/function.hpp>
#include <iostream>
void do_sum_avg(int values[], int n, int& sum, float& avg)
{
sum = 0;
for (int i = 0; i < n; i++)
sum += values[i];
avg = (float)sum / n;
}
int main()
{
boost::function4<void, int*, int, int&, float&> sum_avg;
sum_avg = &do_sum_avg;
return 0;
}

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// Copyright 2018 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.
#include <boost/function.hpp>
#include <boost/core/lightweight_test.hpp>
void throw_bad_function_call();
int main()
{
BOOST_TEST_THROWS( throw_bad_function_call(), boost::bad_function_call );
return boost::report_errors();
}

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// Copyright 2018 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.
#include <boost/function.hpp>
#include <boost/core/lightweight_test.hpp>
//
void call_fn_1( boost::function<void()> const & fn );
void call_fn_2( boost::function<void(int)> const & fn );
void call_fn_3( boost::function<void(int, int)> const & fn );
void call_fn_4( boost::function0<void> const & fn );
void call_fn_5( boost::function1<void, int> const & fn );
void call_fn_6( boost::function2<void, int, int> const & fn );
//
static int v;
void f0()
{
v = -1;
}
void f1( int x )
{
v = x;
}
void f2( int x, int y )
{
v = x + y;
}
int main()
{
v = 0; call_fn_1( f0 ); BOOST_TEST_EQ( v, -1 );
v = 0; call_fn_2( f1 ); BOOST_TEST_EQ( v, 1 );
v = 0; call_fn_3( f2 ); BOOST_TEST_EQ( v, 3 );
v = 0; call_fn_4( f0 ); BOOST_TEST_EQ( v, -1 );
v = 0; call_fn_5( f1 ); BOOST_TEST_EQ( v, 1 );
v = 0; call_fn_6( f2 ); BOOST_TEST_EQ( v, 3 );
return boost::report_errors();
}

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// Copyright 2018 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.
#include <boost/function.hpp>
#include <boost/core/lightweight_test.hpp>
//
boost::function<int(int, int)> get_fn_1();
boost::function2<int, int, int> get_fn_2();
//
int main()
{
BOOST_TEST_EQ( get_fn_1()( 1, 2 ), 3 );
BOOST_TEST_EQ( get_fn_2()( 1, 2 ), 3 );
return boost::report_errors();
}

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// Copyright 2018 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.
#include <boost/function.hpp>
#include <boost/config.hpp>
#if defined(THROW_BAD_FUNCTION_CALL_DYN_LINK)
# define EXPORT BOOST_SYMBOL_EXPORT
#else
# define EXPORT
#endif
EXPORT void throw_bad_function_call()
{
throw boost::bad_function_call();
}