1// Copyright 2018 the V8 project authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef V8_BASE_V8_FALLTHROUGH_H_
6#define V8_BASE_V8_FALLTHROUGH_H_
7
8// When clang suggests inserting [[clang::fallthrough]], it first checks if
9// it knows of a macro expanding to it, and if so suggests inserting the
10// macro. This means that this macro must be used only in code internal
11// to v8, so that v8's user code doesn't end up getting suggestions
12// for V8_FALLTHROUGH instead of the user-specific fallthrough macro.
13// So do not include this header in any of v8's public headers -- only
14// use it in src/, not in include/.
15#if defined(__clang__)
16#define V8_FALLTHROUGH [[clang::fallthrough]] // NOLINT(whitespace/braces)
17#else
18#define V8_FALLTHROUGH
19#endif
20
21#endif // V8_BASE_V8_FALLTHROUGH_H_
22