diff options
Diffstat (limited to 'third_party/abseil_cpp/absl/types/internal/transform_args.h')
-rw-r--r-- | third_party/abseil_cpp/absl/types/internal/transform_args.h | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/third_party/abseil_cpp/absl/types/internal/transform_args.h b/third_party/abseil_cpp/absl/types/internal/transform_args.h new file mode 100644 index 000000000000..4a0ab42ac49f --- /dev/null +++ b/third_party/abseil_cpp/absl/types/internal/transform_args.h @@ -0,0 +1,246 @@ +// Copyright 2019 The Abseil 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 +// +// https://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. +// +// ----------------------------------------------------------------------------- +// transform_args.h +// ----------------------------------------------------------------------------- +// +// This file contains a higher-order macro that "transforms" each element of a +// a variadic argument by a provided secondary macro. + +#ifndef ABSL_TYPES_INTERNAL_TRANSFORM_ARGS_H_ +#define ABSL_TYPES_INTERNAL_TRANSFORM_ARGS_H_ + +// +// ABSL_INTERNAL_CAT(a, b) +// +// This macro takes two arguments and concatenates them together via ## after +// expansion. +// +// Example: +// +// ABSL_INTERNAL_CAT(foo_, bar) +// +// Results in: +// +// foo_bar +#define ABSL_INTERNAL_CAT(a, b) ABSL_INTERNAL_CAT_IMPL(a, b) +#define ABSL_INTERNAL_CAT_IMPL(a, b) a##b + +// +// ABSL_INTERNAL_TRANSFORM_ARGS(m, ...) +// +// This macro takes another macro as an argument followed by a trailing series +// of additional parameters (up to 32 additional arguments). It invokes the +// passed-in macro once for each of the additional arguments, with the +// expansions separated by commas. +// +// Example: +// +// ABSL_INTERNAL_TRANSFORM_ARGS(MY_MACRO, a, b, c) +// +// Results in: +// +// MY_MACRO(a), MY_MACRO(b), MY_MACRO(c) +// +// TODO(calabrese) Handle no arguments as a special case. +#define ABSL_INTERNAL_TRANSFORM_ARGS(m, ...) \ + ABSL_INTERNAL_CAT(ABSL_INTERNAL_TRANSFORM_ARGS, \ + ABSL_INTERNAL_NUM_ARGS(__VA_ARGS__)) \ + (m, __VA_ARGS__) + +#define ABSL_INTERNAL_TRANSFORM_ARGS1(m, a0) m(a0) + +#define ABSL_INTERNAL_TRANSFORM_ARGS2(m, a0, a1) m(a0), m(a1) + +#define ABSL_INTERNAL_TRANSFORM_ARGS3(m, a0, a1, a2) m(a0), m(a1), m(a2) + +#define ABSL_INTERNAL_TRANSFORM_ARGS4(m, a0, a1, a2, a3) \ + m(a0), m(a1), m(a2), m(a3) + +#define ABSL_INTERNAL_TRANSFORM_ARGS5(m, a0, a1, a2, a3, a4) \ + m(a0), m(a1), m(a2), m(a3), m(a4) + +#define ABSL_INTERNAL_TRANSFORM_ARGS6(m, a0, a1, a2, a3, a4, a5) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5) + +#define ABSL_INTERNAL_TRANSFORM_ARGS7(m, a0, a1, a2, a3, a4, a5, a6) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6) + +#define ABSL_INTERNAL_TRANSFORM_ARGS8(m, a0, a1, a2, a3, a4, a5, a6, a7) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7) + +#define ABSL_INTERNAL_TRANSFORM_ARGS9(m, a0, a1, a2, a3, a4, a5, a6, a7, a8) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8) + +#define ABSL_INTERNAL_TRANSFORM_ARGS10(m, a0, a1, a2, a3, a4, a5, a6, a7, a8, \ + a9) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9) + +#define ABSL_INTERNAL_TRANSFORM_ARGS11(m, a0, a1, a2, a3, a4, a5, a6, a7, a8, \ + a9, a10) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), m(a10) + +#define ABSL_INTERNAL_TRANSFORM_ARGS12(m, a0, a1, a2, a3, a4, a5, a6, a7, a8, \ + a9, a10, a11) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11) + +#define ABSL_INTERNAL_TRANSFORM_ARGS13(m, a0, a1, a2, a3, a4, a5, a6, a7, a8, \ + a9, a10, a11, a12) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12) + +#define ABSL_INTERNAL_TRANSFORM_ARGS14(m, a0, a1, a2, a3, a4, a5, a6, a7, a8, \ + a9, a10, a11, a12, a13) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13) + +#define ABSL_INTERNAL_TRANSFORM_ARGS15(m, a0, a1, a2, a3, a4, a5, a6, a7, a8, \ + a9, a10, a11, a12, a13, a14) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13), m(a14) + +#define ABSL_INTERNAL_TRANSFORM_ARGS16(m, a0, a1, a2, a3, a4, a5, a6, a7, a8, \ + a9, a10, a11, a12, a13, a14, a15) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13), m(a14), m(a15) + +#define ABSL_INTERNAL_TRANSFORM_ARGS17(m, a0, a1, a2, a3, a4, a5, a6, a7, a8, \ + a9, a10, a11, a12, a13, a14, a15, a16) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13), m(a14), m(a15), m(a16) + +#define ABSL_INTERNAL_TRANSFORM_ARGS18(m, a0, a1, a2, a3, a4, a5, a6, a7, a8, \ + a9, a10, a11, a12, a13, a14, a15, a16, \ + a17) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13), m(a14), m(a15), m(a16), m(a17) + +#define ABSL_INTERNAL_TRANSFORM_ARGS19(m, a0, a1, a2, a3, a4, a5, a6, a7, a8, \ + a9, a10, a11, a12, a13, a14, a15, a16, \ + a17, a18) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13), m(a14), m(a15), m(a16), m(a17), m(a18) + +#define ABSL_INTERNAL_TRANSFORM_ARGS20(m, a0, a1, a2, a3, a4, a5, a6, a7, a8, \ + a9, a10, a11, a12, a13, a14, a15, a16, \ + a17, a18, a19) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13), m(a14), m(a15), m(a16), m(a17), m(a18), \ + m(a19) + +#define ABSL_INTERNAL_TRANSFORM_ARGS21(m, a0, a1, a2, a3, a4, a5, a6, a7, a8, \ + a9, a10, a11, a12, a13, a14, a15, a16, \ + a17, a18, a19, a20) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13), m(a14), m(a15), m(a16), m(a17), m(a18), \ + m(a19), m(a20) + +#define ABSL_INTERNAL_TRANSFORM_ARGS22(m, a0, a1, a2, a3, a4, a5, a6, a7, a8, \ + a9, a10, a11, a12, a13, a14, a15, a16, \ + a17, a18, a19, a20, a21) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13), m(a14), m(a15), m(a16), m(a17), m(a18), \ + m(a19), m(a20), m(a21) + +#define ABSL_INTERNAL_TRANSFORM_ARGS23(m, a0, a1, a2, a3, a4, a5, a6, a7, a8, \ + a9, a10, a11, a12, a13, a14, a15, a16, \ + a17, a18, a19, a20, a21, a22) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13), m(a14), m(a15), m(a16), m(a17), m(a18), \ + m(a19), m(a20), m(a21), m(a22) + +#define ABSL_INTERNAL_TRANSFORM_ARGS24(m, a0, a1, a2, a3, a4, a5, a6, a7, a8, \ + a9, a10, a11, a12, a13, a14, a15, a16, \ + a17, a18, a19, a20, a21, a22, a23) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13), m(a14), m(a15), m(a16), m(a17), m(a18), \ + m(a19), m(a20), m(a21), m(a22), m(a23) + +#define ABSL_INTERNAL_TRANSFORM_ARGS25(m, a0, a1, a2, a3, a4, a5, a6, a7, a8, \ + a9, a10, a11, a12, a13, a14, a15, a16, \ + a17, a18, a19, a20, a21, a22, a23, a24) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13), m(a14), m(a15), m(a16), m(a17), m(a18), \ + m(a19), m(a20), m(a21), m(a22), m(a23), m(a24) + +#define ABSL_INTERNAL_TRANSFORM_ARGS26( \ + m, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, \ + a16, a17, a18, a19, a20, a21, a22, a23, a24, a25) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13), m(a14), m(a15), m(a16), m(a17), m(a18), \ + m(a19), m(a20), m(a21), m(a22), m(a23), m(a24), m(a25) + +#define ABSL_INTERNAL_TRANSFORM_ARGS27( \ + m, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, \ + a16, a17, a18, a19, a20, a21, a22, a23, a24, a25, a26) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13), m(a14), m(a15), m(a16), m(a17), m(a18), \ + m(a19), m(a20), m(a21), m(a22), m(a23), m(a24), m(a25), m(a26) + +#define ABSL_INTERNAL_TRANSFORM_ARGS28( \ + m, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, \ + a16, a17, a18, a19, a20, a21, a22, a23, a24, a25, a26, a27) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13), m(a14), m(a15), m(a16), m(a17), m(a18), \ + m(a19), m(a20), m(a21), m(a22), m(a23), m(a24), m(a25), m(a26), m(a27) + +#define ABSL_INTERNAL_TRANSFORM_ARGS29( \ + m, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, \ + a16, a17, a18, a19, a20, a21, a22, a23, a24, a25, a26, a27, a28) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13), m(a14), m(a15), m(a16), m(a17), m(a18), \ + m(a19), m(a20), m(a21), m(a22), m(a23), m(a24), m(a25), m(a26), m(a27), \ + m(a28) + +#define ABSL_INTERNAL_TRANSFORM_ARGS30( \ + m, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, \ + a16, a17, a18, a19, a20, a21, a22, a23, a24, a25, a26, a27, a28, a29) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13), m(a14), m(a15), m(a16), m(a17), m(a18), \ + m(a19), m(a20), m(a21), m(a22), m(a23), m(a24), m(a25), m(a26), m(a27), \ + m(a28), m(a29) + +#define ABSL_INTERNAL_TRANSFORM_ARGS31( \ + m, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, \ + a16, a17, a18, a19, a20, a21, a22, a23, a24, a25, a26, a27, a28, a29, a30) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13), m(a14), m(a15), m(a16), m(a17), m(a18), \ + m(a19), m(a20), m(a21), m(a22), m(a23), m(a24), m(a25), m(a26), m(a27), \ + m(a28), m(a29), m(a30) + +#define ABSL_INTERNAL_TRANSFORM_ARGS32(m, a0, a1, a2, a3, a4, a5, a6, a7, a8, \ + a9, a10, a11, a12, a13, a14, a15, a16, \ + a17, a18, a19, a20, a21, a22, a23, a24, \ + a25, a26, a27, a28, a29, a30, a31) \ + m(a0), m(a1), m(a2), m(a3), m(a4), m(a5), m(a6), m(a7), m(a8), m(a9), \ + m(a10), m(a11), m(a12), m(a13), m(a14), m(a15), m(a16), m(a17), m(a18), \ + m(a19), m(a20), m(a21), m(a22), m(a23), m(a24), m(a25), m(a26), m(a27), \ + m(a28), m(a29), m(a30), m(a31) + +#define ABSL_INTERNAL_NUM_ARGS_IMPL(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, \ + a10, a11, a12, a13, a14, a15, a16, a17, \ + a18, a19, a20, a21, a22, a23, a24, a25, \ + a26, a27, a28, a29, a30, a31, result, ...) \ + result + +#define ABSL_INTERNAL_FORCE_EXPANSION(...) __VA_ARGS__ + +#define ABSL_INTERNAL_NUM_ARGS(...) \ + ABSL_INTERNAL_FORCE_EXPANSION(ABSL_INTERNAL_NUM_ARGS_IMPL( \ + __VA_ARGS__, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, \ + 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, )) + +#endif // ABSL_TYPES_INTERNAL_TRANSFORM_ARGS_H_ |