84 lines
1.9 KiB
C++
84 lines
1.9 KiB
C++
/*
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* Copyright (c) 2015 Andrew Kelley
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*
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* This file is part of zig, which is MIT licensed.
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* See http://opensource.org/licenses/MIT
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*/
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#ifndef ZIG_UTIL_HPP
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#define ZIG_UTIL_HPP
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <new>
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#define BREAKPOINT __asm("int $0x03")
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static const int COMPILE_FAILED_ERR_CODE = 10; // chosen with a random number generator
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void zig_panic(const char *format, ...)
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__attribute__((cold))
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__attribute__ ((noreturn))
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__attribute__ ((format (printf, 1, 2)));
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__attribute__((cold))
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__attribute__ ((noreturn))
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static inline void zig_unreachable(void) {
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zig_panic("unreachable");
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}
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template<typename T>
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__attribute__((malloc)) static inline T *allocate_nonzero(size_t count) {
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T *ptr = reinterpret_cast<T*>(malloc(count * sizeof(T)));
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if (!ptr)
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zig_panic("allocation failed");
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return ptr;
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}
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template<typename T>
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__attribute__((malloc)) static inline T *allocate(size_t count) {
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T *ptr = reinterpret_cast<T*>(calloc(count, sizeof(T)));
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if (!ptr)
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zig_panic("allocation failed");
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return ptr;
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}
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template<typename T>
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static inline T *reallocate_nonzero(T * old, size_t new_count) {
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T *ptr = reinterpret_cast<T*>(realloc(old, new_count * sizeof(T)));
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if (!ptr)
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zig_panic("allocation failed");
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return ptr;
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}
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template <typename T, long n>
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constexpr long array_length(const T (&)[n]) {
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return n;
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}
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template <typename T>
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static inline T max(T a, T b) {
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return (a >= b) ? a : b;
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}
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template <typename T>
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static inline T min(T a, T b) {
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return (a <= b) ? a : b;
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}
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template<typename T>
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static inline T clamp(T min_value, T value, T max_value) {
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return max(min(value, max_value), min_value);
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}
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static inline bool mem_eql_str(const char *mem, size_t mem_len, const char *str) {
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size_t str_len = strlen(str);
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if (str_len != mem_len)
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return false;
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return memcmp(mem, str, mem_len) == 0;
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}
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#endif
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