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/*
* Copyright (c) 2015 Andrew Kelley
*
* This file is part of zig, which is MIT licensed.
* See http://opensource.org/licenses/MIT
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include "util.hpp"
#include "userland.h"
void zig_panic(const char *format, ...) {
va_list ap;
va_start(ap, format);
vfprintf(stderr, format, ap);
fflush(stderr);
va_end(ap);
stage2_panic(nullptr, 0);
abort();
}
void assert(bool ok) {
if (!ok) {
const char *msg = "Assertion failed. This is a bug in the Zig compiler.";
stage2_panic(msg, strlen(msg));
}
}
uint32_t int_hash(int i) {
return (uint32_t)(i % UINT32_MAX);
}
bool int_eq(int a, int b) {
return a == b;
}
uint32_t uint64_hash(uint64_t i) {
return (uint32_t)(i % UINT32_MAX);
}
bool uint64_eq(uint64_t a, uint64_t b) {
return a == b;
}
uint32_t ptr_hash(const void *ptr) {
return (uint32_t)(((uintptr_t)ptr) % UINT32_MAX);
}
bool ptr_eq(const void *a, const void *b) {
return a == b;
}
// Ported from std/mem.zig.
bool SplitIterator_isSplitByte(SplitIterator *self, uint8_t byte) {
for (size_t i = 0; i < self->split_bytes.len; i += 1) {
if (byte == self->split_bytes.ptr[i]) {
return true;
}
}
return false;
}
// Ported from std/mem.zig.
Optional<Slice<uint8_t>> SplitIterator_next(SplitIterator *self) {
// move to beginning of token
while (self->index < self->buffer.len &&
SplitIterator_isSplitByte(self, self->buffer.ptr[self->index]))
{
self->index += 1;
}
size_t start = self->index;
if (start == self->buffer.len) {
return {};
}
// move to end of token
while (self->index < self->buffer.len &&
!SplitIterator_isSplitByte(self, self->buffer.ptr[self->index]))
{
self->index += 1;
}
size_t end = self->index;
return Optional<Slice<uint8_t>>::some(self->buffer.slice(start, end));
}
// Ported from std/mem.zig.
// This one won't collapse multiple separators into one, so you could use it, for example,
// to parse Comma Separated Value format.
Optional<Slice<uint8_t>> SplitIterator_next_separate(SplitIterator *self) {
// move to beginning of token
if (self->index < self->buffer.len &&
SplitIterator_isSplitByte(self, self->buffer.ptr[self->index]))
{
self->index += 1;
}
size_t start = self->index;
if (start == self->buffer.len) {
return {};
}
// move to end of token
while (self->index < self->buffer.len &&
!SplitIterator_isSplitByte(self, self->buffer.ptr[self->index]))
{
self->index += 1;
}
size_t end = self->index;
return Optional<Slice<uint8_t>>::some(self->buffer.slice(start, end));
}
// Ported from std/mem.zig
Slice<uint8_t> SplitIterator_rest(SplitIterator *self) {
// move to beginning of token
size_t index = self->index;
while (index < self->buffer.len && SplitIterator_isSplitByte(self, self->buffer.ptr[index])) {
index += 1;
}
return self->buffer.sliceFrom(index);
}
// Ported from std/mem.zig
SplitIterator memSplit(Slice<uint8_t> buffer, Slice<uint8_t> split_bytes) {
return SplitIterator{0, buffer, split_bytes};
}
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