| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++98, c++03 |
| |
| // <functional> |
| |
| // template<CopyConstructible Fn, CopyConstructible... Types> |
| // unspecified bind(Fn, Types...); |
| // template<Returnable R, CopyConstructible Fn, CopyConstructible... Types> |
| // unspecified bind(Fn, Types...); |
| |
| #include <stdio.h> |
| |
| #include <functional> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| int count = 0; |
| |
| // 1 arg, return void |
| |
| void f_void_1(int i) |
| { |
| count += i; |
| } |
| |
| struct A_void_1 |
| { |
| void operator()(int i) |
| { |
| count += i; |
| } |
| |
| void mem1() {++count;} |
| void mem2() const {count += 2;} |
| }; |
| |
| void |
| test_void_1() |
| { |
| using namespace std::placeholders; |
| int save_count = count; |
| // function |
| { |
| std::bind(f_void_1, _1)(2); |
| assert(count == save_count + 2); |
| save_count = count; |
| } |
| { |
| std::bind(f_void_1, 2)(); |
| assert(count == save_count + 2); |
| save_count = count; |
| } |
| // function pointer |
| { |
| void (*fp)(int) = f_void_1; |
| std::bind(fp, _1)(3); |
| assert(count == save_count+3); |
| save_count = count; |
| } |
| { |
| void (*fp)(int) = f_void_1; |
| std::bind(fp, 3)(); |
| assert(count == save_count+3); |
| save_count = count; |
| } |
| // functor |
| { |
| A_void_1 a0; |
| std::bind(a0, _1)(4); |
| assert(count == save_count+4); |
| save_count = count; |
| } |
| { |
| A_void_1 a0; |
| std::bind(a0, 4)(); |
| assert(count == save_count+4); |
| save_count = count; |
| } |
| // member function pointer |
| { |
| void (A_void_1::*fp)() = &A_void_1::mem1; |
| std::bind(fp, _1)(A_void_1()); |
| assert(count == save_count+1); |
| save_count = count; |
| A_void_1 a; |
| std::bind(fp, _1)(&a); |
| assert(count == save_count+1); |
| save_count = count; |
| } |
| { |
| void (A_void_1::*fp)() = &A_void_1::mem1; |
| std::bind(fp, A_void_1())(); |
| assert(count == save_count+1); |
| save_count = count; |
| A_void_1 a; |
| std::bind(fp, &a)(); |
| assert(count == save_count+1); |
| save_count = count; |
| } |
| // const member function pointer |
| { |
| void (A_void_1::*fp)() const = &A_void_1::mem2; |
| std::bind(fp, _1)(A_void_1()); |
| assert(count == save_count+2); |
| save_count = count; |
| A_void_1 a; |
| std::bind(fp, _1)(&a); |
| assert(count == save_count+2); |
| save_count = count; |
| } |
| { |
| void (A_void_1::*fp)() const = &A_void_1::mem2; |
| std::bind(fp, A_void_1())(); |
| assert(count == save_count+2); |
| save_count = count; |
| A_void_1 a; |
| std::bind(fp, &a)(); |
| assert(count == save_count+2); |
| save_count = count; |
| } |
| } |
| |
| // 1 arg, return int |
| |
| int f_int_1(int i) |
| { |
| return i + 1; |
| } |
| |
| struct A_int_1 |
| { |
| A_int_1() : data_(5) {} |
| int operator()(int i) |
| { |
| return i - 1; |
| } |
| |
| int mem1() {return 3;} |
| int mem2() const {return 4;} |
| int data_; |
| }; |
| |
| void |
| test_int_1() |
| { |
| using namespace std::placeholders; |
| // function |
| { |
| assert(std::bind(f_int_1, _1)(2) == 3); |
| assert(std::bind(f_int_1, 2)() == 3); |
| } |
| // function pointer |
| { |
| int (*fp)(int) = f_int_1; |
| assert(std::bind(fp, _1)(3) == 4); |
| assert(std::bind(fp, 3)() == 4); |
| } |
| // functor |
| { |
| assert(std::bind(A_int_1(), _1)(4) == 3); |
| assert(std::bind(A_int_1(), 4)() == 3); |
| } |
| // member function pointer |
| { |
| assert(std::bind(&A_int_1::mem1, _1)(A_int_1()) == 3); |
| assert(std::bind(&A_int_1::mem1, A_int_1())() == 3); |
| A_int_1 a; |
| assert(std::bind(&A_int_1::mem1, _1)(&a) == 3); |
| assert(std::bind(&A_int_1::mem1, &a)() == 3); |
| } |
| // const member function pointer |
| { |
| assert(std::bind(&A_int_1::mem2, _1)(A_int_1()) == 4); |
| assert(std::bind(&A_int_1::mem2, A_int_1())() == 4); |
| A_int_1 a; |
| assert(std::bind(&A_int_1::mem2, _1)(&a) == 4); |
| assert(std::bind(&A_int_1::mem2, &a)() == 4); |
| } |
| // member data pointer |
| { |
| assert(std::bind(&A_int_1::data_, _1)(A_int_1()) == 5); |
| assert(std::bind(&A_int_1::data_, A_int_1())() == 5); |
| A_int_1 a; |
| assert(std::bind(&A_int_1::data_, _1)(a) == 5); |
| std::bind(&A_int_1::data_, _1)(a) = 6; |
| assert(std::bind(&A_int_1::data_, _1)(a) == 6); |
| assert(std::bind(&A_int_1::data_, _1)(&a) == 6); |
| std::bind(&A_int_1::data_, _1)(&a) = 7; |
| assert(std::bind(&A_int_1::data_, _1)(&a) == 7); |
| } |
| } |
| |
| // 2 arg, return void |
| |
| void f_void_2(int i, int j) |
| { |
| count += i+j; |
| } |
| |
| struct A_void_2 |
| { |
| void operator()(int i, int j) |
| { |
| count += i+j; |
| } |
| |
| void mem1(int i) {count += i;} |
| void mem2(int i) const {count += i;} |
| }; |
| |
| void |
| test_void_2() |
| { |
| using namespace std::placeholders; |
| int save_count = count; |
| // function |
| { |
| std::bind(f_void_2, _1, _2)(2, 3); |
| assert(count == save_count+5); |
| save_count = count; |
| std::bind(f_void_2, 2, _1)(3); |
| assert(count == save_count+5); |
| save_count = count; |
| std::bind(f_void_2, 2, 3)(); |
| assert(count == save_count+5); |
| save_count = count; |
| } |
| // member function pointer |
| { |
| std::bind(&A_void_2::mem1, _1, _2)(A_void_2(), 3); |
| assert(count == save_count+3); |
| save_count = count; |
| std::bind(&A_void_2::mem1, _2, _1)(3, A_void_2()); |
| assert(count == save_count+3); |
| save_count = count; |
| } |
| } |
| |
| int f_nested(int i) |
| { |
| return i+1; |
| } |
| |
| int g_nested(int i) |
| { |
| return i*10; |
| } |
| |
| void test_nested() |
| { |
| using namespace std::placeholders; |
| assert(std::bind(f_nested, std::bind(g_nested, _1))(3) == 31); |
| } |
| |
| int main(int, char**) |
| { |
| test_void_1(); |
| test_int_1(); |
| test_void_2(); |
| test_nested(); |
| |
| return 0; |
| } |