A fast, lightweight and minimalistic Wayland terminal emulator
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#pragma once
#define VERCMP(x, y, cx, cy) ((cx > x) || ((cx == x) && (cy >= y)))
#if defined(__GNUC__) && defined(__GNUC_MINOR__)
#define GNUC_AT_LEAST(x, y) VERCMP(x, y, __GNUC__, __GNUC_MINOR__)
#else
#define GNUC_AT_LEAST(x, y) 0
#endif
#ifdef __has_attribute
#define HAS_ATTRIBUTE(x) __has_attribute(x)
#else
#define HAS_ATTRIBUTE(x) 0
#endif
#ifdef __has_builtin
#define HAS_BUILTIN(x) __has_builtin(x)
#else
#define HAS_BUILTIN(x) 0
#endif
#if GNUC_AT_LEAST(3, 0) || HAS_ATTRIBUTE(unused) || defined(__TINYC__)
#define UNUSED __attribute__((__unused__))
#else
#define UNUSED
#endif
#if GNUC_AT_LEAST(3, 0) || HAS_ATTRIBUTE(malloc)
#define MALLOC __attribute__((__malloc__))
#else
#define MALLOC
#endif
#if GNUC_AT_LEAST(3, 0) || HAS_ATTRIBUTE(format)
#define PRINTF(x) __attribute__((__format__(__printf__, (x), (x + 1))))
#define VPRINTF(x) __attribute__((__format__(__printf__, (x), 0)))
#else
#define PRINTF(x)
#define VPRINTF(x)
#endif
#if (GNUC_AT_LEAST(3, 0) || HAS_BUILTIN(__builtin_expect)) && defined(__OPTIMIZE__)
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
#else
#define likely(x) (x)
#define unlikely(x) (x)
#endif
#if GNUC_AT_LEAST(3, 3) || HAS_ATTRIBUTE(nonnull)
#define NONNULL_ARGS __attribute__((__nonnull__))
#define NONNULL_ARG(...) __attribute__((__nonnull__(__VA_ARGS__)))
#else
#define NONNULL_ARGS
#define NONNULL_ARG(...)
#endif
#if GNUC_AT_LEAST(3, 4) || HAS_ATTRIBUTE(warn_unused_result)
#define WARN_UNUSED_RESULT __attribute__((__warn_unused_result__))
#else
#define WARN_UNUSED_RESULT
#endif
#if GNUC_AT_LEAST(4, 3) || HAS_ATTRIBUTE(cold)
#define COLD __attribute__((__cold__))
#else
#define COLD
#endif
#if GNUC_AT_LEAST(5, 0) || HAS_ATTRIBUTE(returns_nonnull)
#define RETURNS_NONNULL __attribute__((__returns_nonnull__))
#else
#define RETURNS_NONNULL
#endif
#define XMALLOC MALLOC RETURNS_NONNULL WARN_UNUSED_RESULT
#define XSTRDUP XMALLOC NONNULL_ARGS
#if __STDC_VERSION__ >= 201112L
#define NORETURN _Noreturn
#elif GNUC_AT_LEAST(3, 0)
#define NORETURN __attribute__((__noreturn__))
#else
#define NORETURN
#endif