// Copyright 2022 The Dawn & Tint Authors // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are met: // // 1. Redistributions of source code must retain the above copyright notice, this // list of conditions and the following disclaimer. // // 2. Redistributions in binary form must reproduce the above copyright notice, // this list of conditions and the following disclaimer in the documentation // and/or other materials provided with the distribution. // // 3. Neither the name of the copyright holder nor the names of its // contributors may be used to endorse or promote products derived from // this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #ifndef SRC_TINT_UTILS_MACROS_FOREACH_H_ #define SRC_TINT_UTILS_MACROS_FOREACH_H_ // Macro magic to perform macro variadic dispatch. // See: // https://renenyffenegger.ch/notes/development/languages/C-C-plus-plus/preprocessor/macros/__VA_ARGS__/count-arguments // Note, this doesn't attempt to use the ##__VA_ARGS__ trick to handle 0 // Helper macro to force expanding __VA_ARGS__ to satisfy MSVC compiler. #define TINT_MSVC_EXPAND_BUG(X) … /// TINT_COUNT_ARGUMENTS_NTH_ARG is used by TINT_COUNT_ARGUMENTS to get the number of arguments in a /// variadic macro call. #define TINT_COUNT_ARGUMENTS_NTH_ARG(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, \ _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, \ _27, _28, _29, _30, _31, _32, N, ...) … /// TINT_COUNT_ARGUMENTS evaluates to the number of arguments passed to the macro #define TINT_COUNT_ARGUMENTS(...) … // Correctness checks. static_assert …; static_assert …; static_assert …; /// TINT_FOREACH calls CB with each of the variadic arguments. #define TINT_FOREACH(CB, ...) … #define TINT_FOREACH_1(CB, _1) … #define TINT_FOREACH_2(CB, _1, _2) … #define TINT_FOREACH_3(CB, _1, _2, _3) … #define TINT_FOREACH_4(CB, _1, _2, _3, _4) … #define TINT_FOREACH_5(CB, _1, _2, _3, _4, _5) … #define TINT_FOREACH_6(CB, _1, _2, _3, _4, _5, _6) … #define TINT_FOREACH_7(CB, _1, _2, _3, _4, _5, _6, _7) … #define TINT_FOREACH_8(CB, _1, _2, _3, _4, _5, _6, _7, _8) … #define TINT_FOREACH_9(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9) … #define TINT_FOREACH_10(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10) … #define TINT_FOREACH_11(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11) … #define TINT_FOREACH_12(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12) … #define TINT_FOREACH_13(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13) … #define TINT_FOREACH_14(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14) … #define TINT_FOREACH_15(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15) … #define TINT_FOREACH_16(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16) … #define TINT_FOREACH_17(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, \ _17) … #define TINT_FOREACH_18(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, \ _17, _18) … #define TINT_FOREACH_19(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, \ _17, _18, _19) … #define TINT_FOREACH_20(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, \ _17, _18, _19, _20) … #define TINT_FOREACH_21(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, \ _17, _18, _19, _20, _21) … #define TINT_FOREACH_22(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, \ _17, _18, _19, _20, _21, _22) … #define TINT_FOREACH_23(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, \ _17, _18, _19, _20, _21, _22, _23) … #define TINT_FOREACH_24(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, \ _17, _18, _19, _20, _21, _22, _23, _24) … #define TINT_FOREACH_25(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, \ _17, _18, _19, _20, _21, _22, _23, _24, _25) … #define TINT_FOREACH_26(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, \ _17, _18, _19, _20, _21, _22, _23, _24, _25, _26) … #define TINT_FOREACH_27(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, \ _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27) … #define TINT_FOREACH_28(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, \ _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28) … #define TINT_FOREACH_29(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, \ _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29) … #define TINT_FOREACH_30(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, \ _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30) … #define TINT_FOREACH_31(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, \ _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31) … #define TINT_FOREACH_32(CB, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, \ _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31, \ _32) … #endif // SRC_TINT_UTILS_MACROS_FOREACH_H_
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