mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 23:50:19 +00:00
36 lines
1.4 KiB
C
36 lines
1.4 KiB
C
/*
|
|
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Diagnostics.h>
|
|
|
|
// NOTE: This macro works with any result type that has the expected APIs.
|
|
// It's designed with AK::Result and AK::Error in mind.
|
|
//
|
|
// It depends on a non-standard C++ extension, specifically
|
|
// on statement expressions [1]. This is known to be implemented
|
|
// by at least clang and gcc.
|
|
// [1] https://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html
|
|
|
|
#define TRY(expression) \
|
|
({ \
|
|
/* Ignore -Wshadow to allow nesting the macro. */ \
|
|
AK_IGNORE_DIAGNOSTIC("-Wshadow", \
|
|
auto _temporary_result = (expression)); \
|
|
if (_temporary_result.is_error()) [[unlikely]] \
|
|
return _temporary_result.release_error(); \
|
|
_temporary_result.release_value(); \
|
|
})
|
|
|
|
#define MUST(expression) \
|
|
({ \
|
|
/* Ignore -Wshadow to allow nesting the macro. */ \
|
|
AK_IGNORE_DIAGNOSTIC("-Wshadow", \
|
|
auto _temporary_result = (expression)); \
|
|
VERIFY(!_temporary_result.is_error()); \
|
|
_temporary_result.release_value(); \
|
|
})
|