Files
kitty/kitty/simd-string.h
2024-02-25 09:57:27 +05:30

34 lines
1.2 KiB
C

/*
* Copyright (C) 2023 Kovid Goyal <kovid at kovidgoyal.net>
*
* Distributed under terms of the GPL3 license.
*/
#pragma once
#include <stdint.h>
#include <stddef.h>
#define BYTE_LOADER_T unsigned long long
typedef struct ByteLoader {
BYTE_LOADER_T m;
unsigned sz_of_next_load, digits_left, num_left;
const uint8_t *next_load_at;
} ByteLoader;
uint8_t byte_loader_peek(const ByteLoader *self);
void byte_loader_init(ByteLoader *self, const uint8_t *buf, unsigned int sz);
uint8_t byte_loader_next(ByteLoader *self);
// Requires haystack[sz] to be writable and 7 bytes to the left of haystack to
// be readable. Returns pointer to first position in haystack that contains
// either of the two chars or NULL if not found.
uint8_t* find_either_of_two_bytes(uint8_t *haystack, const size_t sz, const uint8_t a, const uint8_t b);
// Requires haystack[sz] to be writable and 7 bytes to the left of haystack to
// be readable. Returns pointer to first position in haystack that contains
// a char that is in [a1, a2] or [a2, a3]
uint8_t*
find_start_of_two_ranges(uint8_t *haystack, const size_t sz, const uint8_t a1, const uint8_t a2, const uint8_t a3, const uint8_t a4);