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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkFunction.h"
#include "Test.h"
static void test_add_five(skiatest::Reporter* r, SkFunction<int(int)>&& f) {
REPORTER_ASSERT(r, f(3) == 8);
REPORTER_ASSERT(r, f(4) == 9);
}
static int add_five(int x) { return x + 5; }
struct AddFive {
int operator()(int x) { return x + 5; };
};
class MoveOnlyAdd5 : SkNoncopyable {
public:
MoveOnlyAdd5() {}
MoveOnlyAdd5(MoveOnlyAdd5&&) {}
MoveOnlyAdd5& operator=(MoveOnlyAdd5&&) { return *this; }
int operator()(int x) { return x + 5; }
};
DEF_TEST(Function, r) {
// We should be able to turn a static function, an explicit functor, or a lambda
// all into an SkFunction equally well.
test_add_five(r, &add_five);
test_add_five(r, AddFive());
test_add_five(r, [](int x) { return x + 5; });
// AddFive and the lambda above are both small enough to test small-object optimization.
// Now test a lambda that's much too large for the small-object optimization.
int a = 1, b = 1, c = 1, d = 1, e = 1;
test_add_five(r, [&](int x) { return x + a + b + c + d + e; });
// Makes sure we forward the functor when constructing SkFunction.
test_add_five(r, MoveOnlyAdd5());
// Makes sure we forward arguments when calling SkFunction.
SkFunction<int(int, MoveOnlyAdd5&&, int)> f([](int x, MoveOnlyAdd5&& addFive, int y) {
return x * addFive(y);
});
REPORTER_ASSERT(r, f(2, MoveOnlyAdd5(), 4) == 18);
}
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