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a9e39e11a8
This is a header-only utility so it can be easily included and used anyhere. Include it in DawnTest.h to automatically pick up definitions to print test parameters. Also, work around bot limitations for very-long test names. Bug: none Change-Id: I940263ab0a4cc415b06fa04749694f16ff08335c Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/51841 Auto-Submit: Austin Eng <enga@chromium.org> Reviewed-by: Stephen White <senorblanco@chromium.org> Commit-Queue: Austin Eng <enga@chromium.org>
71 lines
3.5 KiB
C
71 lines
3.5 KiB
C
// Copyright 2021 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef COMMON_PREPROCESSOR_H_
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#define COMMON_PREPROCESSOR_H_
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// DAWN_PP_GET_HEAD: get the first element of a __VA_ARGS__ without triggering empty
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// __VA_ARGS__ warnings.
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#define DAWN_INTERNAL_PP_GET_HEAD(firstParam, ...) firstParam
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#define DAWN_PP_GET_HEAD(...) DAWN_INTERNAL_PP_GET_HEAD(__VA_ARGS__, dummyArg)
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// DAWN_PP_CONCATENATE: Concatenate tokens, first expanding the arguments passed in.
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#define DAWN_PP_CONCATENATE(arg1, arg2) DAWN_PP_CONCATENATE_1(arg1, arg2)
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#define DAWN_PP_CONCATENATE_1(arg1, arg2) DAWN_PP_CONCATENATE_2(arg1, arg2)
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#define DAWN_PP_CONCATENATE_2(arg1, arg2) arg1##arg2
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// DAWN_PP_EXPAND: Needed to help expand __VA_ARGS__ out on MSVC
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#define DAWN_PP_EXPAND(...) __VA_ARGS__
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// Implementation of DAWN_PP_FOR_EACH, called by concatenating DAWN_PP_FOR_EACH_ with a number.
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#define DAWN_PP_FOR_EACH_1(func, x) func(x)
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#define DAWN_PP_FOR_EACH_2(func, x, ...) \
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func(x) DAWN_PP_EXPAND(DAWN_PP_EXPAND(DAWN_PP_FOR_EACH_1)(func, __VA_ARGS__))
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#define DAWN_PP_FOR_EACH_3(func, x, ...) \
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func(x) DAWN_PP_EXPAND(DAWN_PP_EXPAND(DAWN_PP_FOR_EACH_2)(func, __VA_ARGS__))
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#define DAWN_PP_FOR_EACH_4(func, x, ...) \
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func(x) DAWN_PP_EXPAND(DAWN_PP_EXPAND(DAWN_PP_FOR_EACH_3)(func, __VA_ARGS__))
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#define DAWN_PP_FOR_EACH_5(func, x, ...) \
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func(x) DAWN_PP_EXPAND(DAWN_PP_EXPAND(DAWN_PP_FOR_EACH_4)(func, __VA_ARGS__))
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#define DAWN_PP_FOR_EACH_6(func, x, ...) \
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func(x) DAWN_PP_EXPAND(DAWN_PP_EXPAND(DAWN_PP_FOR_EACH_5)(func, __VA_ARGS__))
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#define DAWN_PP_FOR_EACH_7(func, x, ...) \
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func(x) DAWN_PP_EXPAND(DAWN_PP_EXPAND(DAWN_PP_FOR_EACH_6)(func, __VA_ARGS__))
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#define DAWN_PP_FOR_EACH_8(func, x, ...) \
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func(x) DAWN_PP_EXPAND(DAWN_PP_EXPAND(DAWN_PP_FOR_EACH_7)(func, __VA_ARGS__))
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// Implementation for DAWN_PP_FOR_EACH. Get the number of args in __VA_ARGS__ so we can concat
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// DAWN_PP_FOR_EACH_ and N.
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// ex.) DAWN_PP_FOR_EACH_NARG(a, b, c) ->
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// DAWN_PP_FOR_EACH_NARG(a, b, c, DAWN_PP_FOR_EACH_RSEQ()) ->
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// DAWN_PP_FOR_EACH_NARG_(a, b, c, 8, 7, 6, 5, 4, 3, 2, 1, 0) ->
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// DAWN_PP_FOR_EACH_ARG_N(a, b, c, 8, 7, 6, 5, 4, 3, 2, 1, 0) ->
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// DAWN_PP_FOR_EACH_ARG_N( , , , , , , , , N) ->
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// 3
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#define DAWN_PP_FOR_EACH_NARG(...) DAWN_PP_FOR_EACH_NARG_(__VA_ARGS__, DAWN_PP_FOR_EACH_RSEQ())
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#define DAWN_PP_FOR_EACH_NARG_(...) \
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DAWN_PP_EXPAND(DAWN_PP_EXPAND(DAWN_PP_FOR_EACH_ARG_N)(__VA_ARGS__))
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#define DAWN_PP_FOR_EACH_ARG_N(_1, _2, _3, _4, _5, _6, _7, _8, N, ...) N
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#define DAWN_PP_FOR_EACH_RSEQ() 8, 7, 6, 5, 4, 3, 2, 1, 0
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// Implementation for DAWN_PP_FOR_EACH.
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// Creates a call to DAWN_PP_FOR_EACH_X where X is 1, 2, ..., etc.
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#define DAWN_PP_FOR_EACH_(N, func, ...) DAWN_PP_CONCATENATE(DAWN_PP_FOR_EACH_, N)(func, __VA_ARGS__)
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// DAWN_PP_FOR_EACH: Apply |func| to each argument in |x| and __VA_ARGS__
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#define DAWN_PP_FOR_EACH(func, ...) \
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DAWN_PP_FOR_EACH_(DAWN_PP_FOR_EACH_NARG(__VA_ARGS__), func, __VA_ARGS__)
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#endif // COMMON_PREPROCESSOR_H_
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