1 line
6.4 KiB
C++
1 line
6.4 KiB
C++
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//===----------------------------------------------------------------------===//
//
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <functional>
// class function<R(ArgTypes...)>
// R operator()(ArgTypes... args) const
#include <functional>
#include <cassert>
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;}
};
void
test_void_1()
{
int save_count = count;
// function
{
std::function<void (int)> r1(f_void_1);
int i = 2;
r1(i);
assert(count == save_count+2);
save_count = count;
}
// function pointer
{
void (*fp)(int) = f_void_1;
std::function<void (int)> r1(fp);
int i = 3;
r1(i);
assert(count == save_count+3);
save_count = count;
}
// functor
{
A_void_1 a0;
std::function<void (int)> r1(a0);
int i = 4;
r1(i);
assert(count == save_count+4);
save_count = count;
}
// member function pointer
{
void (A_void_1::*fp)() = &A_void_1::mem1;
std::function<void (A_void_1)> r1(fp);
A_void_1 a;
r1(a);
assert(count == save_count+1);
save_count = count;
A_void_1* ap = &a;
std::function<void (A_void_1*)> r2 = fp;
r2(ap);
assert(count == save_count+1);
save_count = count;
}
// const member function pointer
{
void (A_void_1::*fp)() const = &A_void_1::mem2;
std::function<void (A_void_1)> r1(fp);
A_void_1 a;
r1(a);
assert(count == save_count+1);
save_count = count;
std::function<void (A_void_1*)> r2(fp);
A_void_1* ap = &a;
r2(ap);
assert(count == save_count+1);
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()
{
// function
{
std::function<int (int)> r1(f_int_1);
int i = 2;
assert(r1(i) == 3);
}
// function pointer
{
int (*fp)(int) = f_int_1;
std::function<int (int)> r1(fp);
int i = 3;
assert(r1(i) == 4);
}
// functor
{
A_int_1 a0;
std::function<int (int)> r1(a0);
int i = 4;
assert(r1(i) == 3);
}
// member function pointer
{
int (A_int_1::*fp)() = &A_int_1::mem1;
std::function<int (A_int_1)> r1(fp);
A_int_1 a;
assert(r1(a) == 3);
std::function<int (A_int_1*)> r2(fp);
A_int_1* ap = &a;
assert(r2(ap) == 3);
}
// const member function pointer
{
int (A_int_1::*fp)() const = &A_int_1::mem2;
std::function<int (A_int_1)> r1(fp);
A_int_1 a;
assert(r1(a) == 4);
std::function<int (A_int_1*)> r2(fp);
A_int_1* ap = &a;
assert(r2(ap) == 4);
}
// member data pointer
{
int A_int_1::*fp = &A_int_1::data_;
std::function<int& (A_int_1&)> r1(fp);
A_int_1 a;
assert(r1(a) == 5);
r1(a) = 6;
assert(r1(a) == 6);
std::function<int& (A_int_1*)> r2(fp);
A_int_1* ap = &a;
assert(r2(ap) == 6);
r2(ap) = 7;
assert(r2(ap) == 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()
{
int save_count = count;
// function
{
std::function<void (int, int)> r1(f_void_2);
int i = 2;
int j = 3;
r1(i, j);
assert(count == save_count+5);
save_count = count;
}
// function pointer
{
void (*fp)(int, int) = f_void_2;
std::function<void (int, int)> r1(fp);
int i = 3;
int j = 4
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