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boost/function/function_template.hpp, boost/function/function_base.hpp:

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- Added "contains" member function to extract a pointer to the target
    function object if you know its type
  - Added operator== that can compare a Boost.Function object against a
    function object

libs/function/test/Jamfile, libs/function/test/contains_test.cpp:
  - Test contains() and equality comparison operators


[SVN r21844]
This commit is contained in:
Douglas Gregor
2004-01-20 18:02:02 +00:00
parent 50ff886c81
commit 7d30d98efd
4 changed files with 372 additions and 24 deletions
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2
test/Jamfile
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@ -60,6 +60,8 @@ DEPENDS all : test ;
[ run libs/function/test/function_ref_cxx98.cpp : : : : ]
[ run libs/function/test/function_ref_portable.cpp : : : : ]
[ run libs/function/test/contains_test.cpp : : : : ]
;
}

96
test/contains_test.cpp Normal file
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@ -0,0 +1,96 @@
// Boost.Function library
// Copyright Doug 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/test/minimal.hpp>
#include <boost/function.hpp>
#include <boost/ref.hpp>
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; }
static void contains_test()
{
boost::function0<int> f;
f = &forty_two;
BOOST_TEST(*f.contains<int (*)()>() == &forty_two);
BOOST_TEST(!f.contains<Seventeen>());
f = Seventeen();
BOOST_TEST(!f.contains<int (*)()>());
BOOST_TEST(f.contains<Seventeen>());
Seventeen this_seventeen;
f = boost::ref(this_seventeen);
BOOST_TEST(!f.contains<int (*)()>());
BOOST_TEST(f.contains<Seventeen>());
BOOST_TEST(f.contains<Seventeen>() == &this_seventeen);
}
static void equal_test()
{
boost::function0<int> f;
f = &forty_two;
BOOST_TEST(f == &forty_two);
BOOST_TEST(&forty_two == f);
BOOST_TEST(f != ReturnInt(17));
BOOST_TEST(ReturnInt(17) != f);
f = ReturnInt(17);
BOOST_TEST(f != &forty_two);
BOOST_TEST(&forty_two != f);
BOOST_TEST(f == ReturnInt(17));
BOOST_TEST(ReturnInt(17) == f);
BOOST_TEST(f != ReturnInt(16));
BOOST_TEST(ReturnInt(16) != f);
#if !defined(BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX)
boost::function<int(void)> g;
g = &forty_two;
BOOST_TEST(g == &forty_two);
BOOST_TEST(&forty_two == g);
BOOST_TEST(g != ReturnInt(17));
BOOST_TEST(ReturnInt(17) != g);
g = ReturnInt(17);
BOOST_TEST(g != &forty_two);
BOOST_TEST(&forty_two != g);
BOOST_TEST(g == ReturnInt(17));
BOOST_TEST(ReturnInt(17) == g);
BOOST_TEST(g != ReturnInt(16));
BOOST_TEST(ReturnInt(16) != g);
#endif
}
int test_main(int, char*[])
{
contains_test();
equal_test();
return 0;
}