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rvalue reference outputs

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Document rvalue reference outputs behaviour
Test rvalue reference outputs
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William S Fulton 2022-09-08 08:46:32 +01:00
commit 2212af3f4f
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Examples/test-suite/d/cpp11_rvalue_reference_move_input_runme.2.d
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module cpp11_rvalue_reference_move_input_runme;
import cpp11_rvalue_reference_move_input.Counter;
import cpp11_rvalue_reference_move_input.MovableCopyable;
import std.algorithm;
void main() {
{
// Function containing rvalue reference parameter
Counter.reset_counts();
scope MovableCopyable mo = new MovableCopyable(222);
Counter.check_counts(1, 0, 0, 0, 0, 0);
MovableCopyable.movein(mo);
Counter.check_counts(1, 0, 0, 1, 0, 2);
if (!MovableCopyable.is_nullptr(mo))
throw new Exception("is_nullptr failed");
mo.dispose();
Counter.check_counts(1, 0, 0, 1, 0, 2);
}
{
// Move constructor test
Counter.reset_counts();
scope MovableCopyable mo = new MovableCopyable(222);
Counter.check_counts(1, 0, 0, 0, 0, 0);
MovableCopyable mo_moved = new MovableCopyable(mo);
Counter.check_counts(1, 0, 0, 1, 0, 1);
if (!MovableCopyable.is_nullptr(mo))
throw new Exception("is_nullptr failed");
mo.dispose();
Counter.check_counts(1, 0, 0, 1, 0, 1);
mo_moved.dispose();
Counter.check_counts(1, 0, 0, 1, 0, 2);
}
{
// Move assignment operator test
Counter.reset_counts();
scope MovableCopyable mo111 = new MovableCopyable(111);
scope MovableCopyable mo222 = new MovableCopyable(222);
Counter.check_counts(2, 0, 0, 0, 0, 0);
mo111.MoveAssign(mo222);
Counter.check_counts(2, 0, 0, 0, 1, 1);
if (!MovableCopyable.is_nullptr(mo222))
throw new Exception("is_nullptr failed");
mo222.dispose();
Counter.check_counts(2, 0, 0, 0, 1, 1);
mo111.dispose();
Counter.check_counts(2, 0, 0, 0, 1, 2);
}
{
// null check
Counter.reset_counts();
bool exception_thrown = false;
try {
MovableCopyable.movein(null);
} catch (Exception e) {
if (!canFind(e.msg, "MovableCopyable && is null"))
throw new Exception("incorrect exception message:" ~ e.msg);
exception_thrown = true;
}
if (!exception_thrown)
throw new Exception("Should have thrown null error");
Counter.check_counts(0, 0, 0, 0, 0, 0);
}
}