1 /* SPDX-License-Identifier: MIT */ 2 /* 3 * Copyright © 2023 Intel Corporation 4 */ 5 6 #ifndef _XE_RTP_HELPERS_ 7 #define _XE_RTP_HELPERS_ 8 9 #ifndef _XE_RTP_INCLUDE_PRIVATE_HELPERS 10 #error "This header is supposed to be included by xe_rtp.h only" 11 #endif 12 13 #include "xe_args.h" 14 15 /* 16 * Helper macros - not to be used outside this header. 17 */ 18 #define _XE_ESC(...) __VA_ARGS__ 19 20 #define _XE_TUPLE_TAIL(...) (DROP_FIRST_ARG(__VA_ARGS__)) 21 22 #define _XE_RTP_CONCAT(a, b) CONCATENATE(XE_RTP_, CONCATENATE(a, b)) 23 24 #define __XE_RTP_PASTE_SEP_COMMA , 25 #define __XE_RTP_PASTE_SEP_BITWISE_OR | 26 27 /* 28 * XE_RTP_PASTE_FOREACH - Paste XE_RTP_<@prefix_> on each element of the tuple 29 * @args, with the end result separated by @sep_. @sep must be one of the 30 * previously declared macros __XE_RTP_PASTE_SEP_*, or declared with such 31 * prefix. 32 * 33 * Examples: 34 * 35 * 1) XE_RTP_PASTE_FOREACH(TEST_, COMMA, (FOO, BAR)) 36 * expands to: 37 * 38 * XE_RTP_TEST_FOO , XE_RTP_TEST_BAR 39 * 40 * 2) XE_RTP_PASTE_FOREACH(TEST2_, COMMA, (FOO)) 41 * expands to: 42 * 43 * XE_RTP_TEST2_FOO 44 * 45 * 3) XE_RTP_PASTE_FOREACH(TEST3, BITWISE_OR, (FOO, BAR)) 46 * expands to: 47 * 48 * XE_RTP_TEST3_FOO | XE_RTP_TEST3_BAR 49 * 50 * 4) #define __XE_RTP_PASTE_SEP_MY_SEP BANANA 51 * XE_RTP_PASTE_FOREACH(TEST_, MY_SEP, (FOO, BAR)) 52 * expands to: 53 * 54 * XE_RTP_TEST_FOO BANANA XE_RTP_TEST_BAR 55 */ 56 #define XE_RTP_PASTE_FOREACH(prefix_, sep_, args_) _XE_RTP_CONCAT(PASTE_, COUNT_ARGS args_)(prefix_, sep_, args_) 57 #define XE_RTP_PASTE_1(prefix_, sep_, args_) _XE_RTP_CONCAT(prefix_, FIRST_ARG args_) 58 #define XE_RTP_PASTE_2(prefix_, sep_, args_) _XE_RTP_CONCAT(prefix_, FIRST_ARG args_) __XE_RTP_PASTE_SEP_ ## sep_ XE_RTP_PASTE_1(prefix_, sep_, _XE_TUPLE_TAIL args_) 59 #define XE_RTP_PASTE_3(prefix_, sep_, args_) _XE_RTP_CONCAT(prefix_, FIRST_ARG args_) __XE_RTP_PASTE_SEP_ ## sep_ XE_RTP_PASTE_2(prefix_, sep_, _XE_TUPLE_TAIL args_) 60 #define XE_RTP_PASTE_4(prefix_, sep_, args_) _XE_RTP_CONCAT(prefix_, FIRST_ARG args_) __XE_RTP_PASTE_SEP_ ## sep_ XE_RTP_PASTE_3(prefix_, sep_, _XE_TUPLE_TAIL args_) 61 #define XE_RTP_PASTE_5(prefix_, sep_, args_) _XE_RTP_CONCAT(prefix_, FIRST_ARG args_) __XE_RTP_PASTE_SEP_ ## sep_ XE_RTP_PASTE_4(prefix_, sep_, _XE_TUPLE_TAIL args_) 62 #define XE_RTP_PASTE_6(prefix_, sep_, args_) _XE_RTP_CONCAT(prefix_, FIRST_ARG args_) __XE_RTP_PASTE_SEP_ ## sep_ XE_RTP_PASTE_5(prefix_, sep_, _XE_TUPLE_TAIL args_) 63 64 /* 65 * XE_RTP_DROP_CAST - Drop cast to convert a compound statement to a initializer 66 * 67 * Example: 68 * 69 * #define foo(a_) ((struct foo){ .a = a_ }) 70 * XE_RTP_DROP_CAST(foo(10)) 71 * expands to: 72 * 73 * { .a = 10 } 74 */ 75 #define XE_RTP_DROP_CAST(...) _XE_ESC(DROP_FIRST_ARG _XE_ESC __VA_ARGS__) 76 77 #endif 78