IRmacros.h

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#ifndef IRMACROS_H_
#define IRMACROS_H_
/****************************************************************
 * Copyright 2022 IRremoteESP8266 project and others
 */
 
#define PP_THIRD_ARG(a, b, c, ...) c
#define VA_OPT_SUPPORTED_I(...) \
            PP_THIRD_ARG(__VA_OPT__(, false), true, false, false)
#define VA_OPT_SUPPORTED VA_OPT_SUPPORTED_I(?)
 
#if !VA_OPT_SUPPORTED
// #pragma message("Compiler without __VA_OPT__ support")
#define COND(cond, a, b) a
#else  // !VA_OPT_SUPPORTED
#define NOTHING
#define EXPAND(...) __VA_ARGS__
#define STUFF_P(a, ...) __VA_OPT__(a)
#define STUFF(...) STUFF_P(__VA_ARGS__)
#define VA_TEST_P(a, ...) __VA_OPT__(NO)##THING
#define VA_TEST(...) VA_TEST_P(__VA_ARGS__)
#define NEGATE(a) VA_TEST(a, a)
#define COND_P(cond, a, b) STUFF(a, cond)STUFF(b, NEGATE(cond))
#define COND(cond, a, b) EXPAND(COND_P(cond, a, b))
#endif  // !VA_OPT_SUPPORTED
 
#endif  // IRMACROS_H_