103 lines
2.4 KiB
C++
103 lines
2.4 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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#include <stdlib.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include "util.hpp"
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#include "userland.h"
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void zig_panic(const char *format, ...) {
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va_list ap;
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va_start(ap, format);
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vfprintf(stderr, format, ap);
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fflush(stderr);
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va_end(ap);
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stage2_panic(nullptr, 0);
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abort();
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}
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void assert(bool ok) {
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if (!ok) {
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const char *msg = "Assertion failed. This is a bug in the Zig compiler.";
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stage2_panic(msg, strlen(msg));
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}
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}
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uint32_t int_hash(int i) {
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return (uint32_t)(i % UINT32_MAX);
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}
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bool int_eq(int a, int b) {
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return a == b;
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}
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uint32_t uint64_hash(uint64_t i) {
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return (uint32_t)(i % UINT32_MAX);
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}
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bool uint64_eq(uint64_t a, uint64_t b) {
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return a == b;
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}
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uint32_t ptr_hash(const void *ptr) {
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return (uint32_t)(((uintptr_t)ptr) % UINT32_MAX);
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}
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bool ptr_eq(const void *a, const void *b) {
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return a == b;
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}
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// Ported from std/mem.zig.
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bool SplitIterator_isSplitByte(SplitIterator *self, uint8_t byte) {
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for (size_t i = 0; i < self->split_bytes.len; i += 1) {
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if (byte == self->split_bytes.ptr[i]) {
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return true;
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}
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}
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return false;
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}
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// Ported from std/mem.zig.
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Optional<Slice<uint8_t>> SplitIterator_next(SplitIterator *self) {
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// move to beginning of token
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while (self->index < self->buffer.len &&
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SplitIterator_isSplitByte(self, self->buffer.ptr[self->index]))
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{
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self->index += 1;
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}
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size_t start = self->index;
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if (start == self->buffer.len) {
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return {};
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}
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// move to end of token
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while (self->index < self->buffer.len &&
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!SplitIterator_isSplitByte(self, self->buffer.ptr[self->index]))
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{
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self->index += 1;
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}
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size_t end = self->index;
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return Optional<Slice<uint8_t>>::some(self->buffer.slice(start, end));
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}
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// Ported from std/mem.zig
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Slice<uint8_t> SplitIterator_rest(SplitIterator *self) {
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// move to beginning of token
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size_t index = self->index;
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while (index < self->buffer.len && SplitIterator_isSplitByte(self, self->buffer.ptr[index])) {
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index += 1;
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}
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return self->buffer.sliceFrom(index);
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}
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// Ported from std/mem.zig
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SplitIterator memSplit(Slice<uint8_t> buffer, Slice<uint8_t> split_bytes) {
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return SplitIterator{0, buffer, split_bytes};
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}
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