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Diffstat (limited to 'js/src/frontend/Parser-macros.h')
| -rw-r--r-- | js/src/frontend/Parser-macros.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/js/src/frontend/Parser-macros.h b/js/src/frontend/Parser-macros.h new file mode 100644 index 0000000000..4e7f7dfb5f --- /dev/null +++ b/js/src/frontend/Parser-macros.h @@ -0,0 +1,21 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * vim: set ts=8 sts=2 et sw=2 tw=80: + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef frontend_Parser_macros_h +#define frontend_Parser_macros_h + +#include "mozilla/Likely.h" // MOZ_UNLIKELY + +#define MOZ_TRY_VAR_OR_RETURN(target, expr, returnValue) \ + do { \ + auto parserTryVarTempResult_ = (expr); \ + if (MOZ_UNLIKELY(parserTryVarTempResult_.isErr())) { \ + return (returnValue); \ + } \ + (target) = parserTryVarTempResult_.unwrap(); \ + } while (0) + +#endif /* frontend_Parser_macros_h */ |