1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <functional> 11 12 // class function<R(ArgTypes...)> 13 14 // template<class F, class A> function(allocator_arg_t, const A&, F); 15 16 #include <functional> 17 #include <cassert> 18 19 #include "test_allocator.h" 20 21 class A 22 { 23 int data_[10]; 24 public: 25 static int count; 26 27 A() 28 { 29 ++count; 30 for (int i = 0; i < 10; ++i) 31 data_[i] = i; 32 } 33 34 A(const A&) {++count;} 35 36 ~A() {--count;} 37 38 int operator()(int i) const 39 { 40 for (int j = 0; j < 10; ++j) 41 i += data_[j]; 42 return i; 43 } 44 45 int foo(int) const {return 1;} 46 }; 47 48 int A::count = 0; 49 50 int g(int) {return 0;} 51 52 class Foo { 53 public: 54 void bar(int k) { } 55 }; 56 57 int main() 58 { 59 { 60 std::function<int(int)> f(std::allocator_arg, test_allocator<A>(), A()); 61 assert(A::count == 1); 62 assert(f.target<A>()); 63 assert(f.target<int(*)(int)>() == 0); 64 } 65 assert(A::count == 0); 66 { 67 std::function<int(int)> f(std::allocator_arg, test_allocator<int(*)(int)>(), g); 68 assert(f.target<int(*)(int)>()); 69 assert(f.target<A>() == 0); 70 } 71 { 72 std::function<int(int)> f(std::allocator_arg, test_allocator<int(*)(int)>(), 73 (int (*)(int))0); 74 assert(!f); 75 assert(f.target<int(*)(int)>() == 0); 76 assert(f.target<A>() == 0); 77 } 78 { 79 std::function<int(const A*, int)> f(std::allocator_arg, 80 test_allocator<int(A::*)(int)const>(), 81 &A::foo); 82 assert(f); 83 assert(f.target<int (A::*)(int) const>() != 0); 84 } 85 { 86 Foo f; 87 std::function<void(int)> fun = std::bind(&Foo::bar, &f, std::placeholders::_1); 88 fun(10); 89 } 90 } 91
