pm_char.h

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#ifndef PRISM_CHAR_H
#define PRISM_CHAR_H
 
#include "prism/defines.h"
#include "prism/util/pm_line_offset_list.h"
 
#include <stdbool.h>
#include <stddef.h>
 
#define PRISM_CHAR_BIT_WHITESPACE (1 << 0)
 
#define PRISM_CHAR_BIT_INLINE_WHITESPACE (1 << 1)
 
extern const uint8_t pm_byte_table[256];
 
static PRISM_FORCE_INLINE bool
pm_char_is_whitespace(const uint8_t b) {
    return (pm_byte_table[b] & PRISM_CHAR_BIT_WHITESPACE) != 0;
}
 
static PRISM_FORCE_INLINE bool
pm_char_is_inline_whitespace(const uint8_t b) {
    return (pm_byte_table[b] & PRISM_CHAR_BIT_INLINE_WHITESPACE) != 0;
}
 
static PRISM_FORCE_INLINE size_t
pm_strspn_inline_whitespace(const uint8_t *string, ptrdiff_t length) {
    if (length <= 0) return 0;
    size_t size = 0;
    size_t maximum = (size_t) length;
    while (size < maximum && (pm_byte_table[string[size]] & PRISM_CHAR_BIT_INLINE_WHITESPACE)) size++;
    return size;
}
 
size_t pm_strspn_whitespace(const uint8_t *string, ptrdiff_t length);
 
size_t pm_strspn_whitespace_newlines(const uint8_t *string, ptrdiff_t length, pm_arena_t *arena, pm_line_offset_list_t *line_offsets, uint32_t start_offset);
 
size_t pm_strspn_decimal_digit(const uint8_t *string, ptrdiff_t length);
 
size_t pm_strspn_hexadecimal_digit(const uint8_t *string, ptrdiff_t length);
 
size_t pm_strspn_octal_number(const uint8_t *string, ptrdiff_t length, const uint8_t **invalid);
 
size_t pm_strspn_decimal_number(const uint8_t *string, ptrdiff_t length, const uint8_t **invalid);
 
size_t pm_strspn_hexadecimal_number(const uint8_t *string, ptrdiff_t length, const uint8_t **invalid);
 
size_t pm_strspn_regexp_option(const uint8_t *string, ptrdiff_t length);
 
size_t pm_strspn_binary_number(const uint8_t *string, ptrdiff_t length, const uint8_t **invalid);
 
 
bool pm_char_is_binary_digit(const uint8_t b);
 
bool pm_char_is_octal_digit(const uint8_t b);
 
bool pm_char_is_decimal_digit(const uint8_t b);
 
bool pm_char_is_hexadecimal_digit(const uint8_t b);
 
#endif