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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <functional>
// class function<R(ArgTypes...)>
// template<class F, class A> function(allocator_arg_t, const A&, F);
#include <functional>
#include <cassert>
#include "test_allocator.h"
class A
{
int data_[10];
public:
static int count;
A()
{
++count;
for (int i = 0; i < 10; ++i)
data_[i] = i;
}
A(const A&) {++count;}
~A() {--count;}
int operator()(int i) const
{
for (int j = 0; j < 10; ++j)
i += data_[j];
return i;
}
int foo(int) const {return 1;}
};
int A::count = 0;
int g(int) {return 0;}
class Foo {
public:
void bar(int k) { }
};
int main()
{
{
std::function<int(int)> f(std::allocator_arg, test_allocator<A>(), A());
assert(A::count == 1);
assert(f.target<A>());
assert(f.target<int(*)(int)>() == 0);
}
assert(A::count == 0);
{
std::function<int(int)> f(std::allocator_arg, test_allocator<int(*)(int)>(), g);
assert(f.target<int(*)(int)>());
assert(f.target<A>() == 0);
}
{
std::function<int(int)> f(std::allocator_arg, test_allocator<int(*)(int)>(),
(int (*)(int))0);
assert(!f);
assert(f.target<int(*)(int)>() == 0);
assert(f.target<A>() == 0);
}
{
std::function<int(const A*, int)> f(std::allocator_arg,
test_allocator<int(A::*)(int)const>(),
&A::foo);
assert(f);
assert(f.target<int (A::*)(int) const>() != 0);
}
{
Foo f;
std::function<void(int)> fun = std::bind(&Foo::bar, &f, std::placeholders::_1);
fun(10);
}
}
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