dawn-cmake/src/dawn/common/Preprocessor.h
dan sinclair fb5a492787 Fix inclusive language presubmit
The current presubmit has the filter inverted so it would only attempt
to match the filtered files. The file name also has to be converted to
`LocalPath` otherwise it's attempting to compare a python object to a
string and always fails to match.

Bug: dawn:1339
Change-Id: Ie7712dee60f6b9df2cb78c9feab11769f7ea1f02
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/87080
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Auto-Submit: Dan Sinclair <dsinclair@chromium.org>
2022-04-19 22:25:45 +00:00

71 lines
3.5 KiB
C

// Copyright 2021 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef SRC_DAWN_COMMON_PREPROCESSOR_H_
#define SRC_DAWN_COMMON_PREPROCESSOR_H_
// DAWN_PP_GET_HEAD: get the first element of a __VA_ARGS__ without triggering empty
// __VA_ARGS__ warnings.
#define DAWN_INTERNAL_PP_GET_HEAD(firstParam, ...) firstParam
#define DAWN_PP_GET_HEAD(...) DAWN_INTERNAL_PP_GET_HEAD(__VA_ARGS__, placeholderArg)
// DAWN_PP_CONCATENATE: Concatenate tokens, first expanding the arguments passed in.
#define DAWN_PP_CONCATENATE(arg1, arg2) DAWN_PP_CONCATENATE_1(arg1, arg2)
#define DAWN_PP_CONCATENATE_1(arg1, arg2) DAWN_PP_CONCATENATE_2(arg1, arg2)
#define DAWN_PP_CONCATENATE_2(arg1, arg2) arg1##arg2
// DAWN_PP_EXPAND: Needed to help expand __VA_ARGS__ out on MSVC
#define DAWN_PP_EXPAND(...) __VA_ARGS__
// Implementation of DAWN_PP_FOR_EACH, called by concatenating DAWN_PP_FOR_EACH_ with a number.
#define DAWN_PP_FOR_EACH_1(func, x) func(x)
#define DAWN_PP_FOR_EACH_2(func, x, ...) \
func(x) DAWN_PP_EXPAND(DAWN_PP_EXPAND(DAWN_PP_FOR_EACH_1)(func, __VA_ARGS__))
#define DAWN_PP_FOR_EACH_3(func, x, ...) \
func(x) DAWN_PP_EXPAND(DAWN_PP_EXPAND(DAWN_PP_FOR_EACH_2)(func, __VA_ARGS__))
#define DAWN_PP_FOR_EACH_4(func, x, ...) \
func(x) DAWN_PP_EXPAND(DAWN_PP_EXPAND(DAWN_PP_FOR_EACH_3)(func, __VA_ARGS__))
#define DAWN_PP_FOR_EACH_5(func, x, ...) \
func(x) DAWN_PP_EXPAND(DAWN_PP_EXPAND(DAWN_PP_FOR_EACH_4)(func, __VA_ARGS__))
#define DAWN_PP_FOR_EACH_6(func, x, ...) \
func(x) DAWN_PP_EXPAND(DAWN_PP_EXPAND(DAWN_PP_FOR_EACH_5)(func, __VA_ARGS__))
#define DAWN_PP_FOR_EACH_7(func, x, ...) \
func(x) DAWN_PP_EXPAND(DAWN_PP_EXPAND(DAWN_PP_FOR_EACH_6)(func, __VA_ARGS__))
#define DAWN_PP_FOR_EACH_8(func, x, ...) \
func(x) DAWN_PP_EXPAND(DAWN_PP_EXPAND(DAWN_PP_FOR_EACH_7)(func, __VA_ARGS__))
// Implementation for DAWN_PP_FOR_EACH. Get the number of args in __VA_ARGS__ so we can concat
// DAWN_PP_FOR_EACH_ and N.
// ex.) DAWN_PP_FOR_EACH_NARG(a, b, c) ->
// DAWN_PP_FOR_EACH_NARG(a, b, c, DAWN_PP_FOR_EACH_RSEQ()) ->
// DAWN_PP_FOR_EACH_NARG_(a, b, c, 8, 7, 6, 5, 4, 3, 2, 1, 0) ->
// DAWN_PP_FOR_EACH_ARG_N(a, b, c, 8, 7, 6, 5, 4, 3, 2, 1, 0) ->
// DAWN_PP_FOR_EACH_ARG_N( , , , , , , , , N) ->
// 3
#define DAWN_PP_FOR_EACH_NARG(...) DAWN_PP_FOR_EACH_NARG_(__VA_ARGS__, DAWN_PP_FOR_EACH_RSEQ())
#define DAWN_PP_FOR_EACH_NARG_(...) \
DAWN_PP_EXPAND(DAWN_PP_EXPAND(DAWN_PP_FOR_EACH_ARG_N)(__VA_ARGS__))
#define DAWN_PP_FOR_EACH_ARG_N(_1, _2, _3, _4, _5, _6, _7, _8, N, ...) N
#define DAWN_PP_FOR_EACH_RSEQ() 8, 7, 6, 5, 4, 3, 2, 1, 0
// Implementation for DAWN_PP_FOR_EACH.
// Creates a call to DAWN_PP_FOR_EACH_X where X is 1, 2, ..., etc.
#define DAWN_PP_FOR_EACH_(N, func, ...) DAWN_PP_CONCATENATE(DAWN_PP_FOR_EACH_, N)(func, __VA_ARGS__)
// DAWN_PP_FOR_EACH: Apply |func| to each argument in |x| and __VA_ARGS__
#define DAWN_PP_FOR_EACH(func, ...) \
DAWN_PP_FOR_EACH_(DAWN_PP_FOR_EACH_NARG(__VA_ARGS__), func, __VA_ARGS__)
#endif // SRC_DAWN_COMMON_PREPROCESSOR_H_