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lexer.h
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lexer.h
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#ifndef SILVER_LEXER_H
#define SILVER_LEXER_H
#include <stdbool.h>
#include "types.h"
typedef struct {
ant_offset_t pos;
ant_offset_t toff;
ant_offset_t tlen;
ant_value_t tval;
uint8_t tok;
uint8_t consumed;
bool had_newline;
} sv_lexer_state_t;
typedef struct {
ant_t *js;
const char *code;
ant_offset_t clen;
bool strict;
sv_lexer_state_t st;
} sv_lexer_t;
typedef struct {
const char *str;
uint32_t len;
bool ok;
} sv_lex_string_t;
typedef struct {
const char *code;
ant_offset_t clen;
bool strict;
sv_lexer_state_t st;
} sv_lexer_checkpoint_t;
sv_lex_string_t sv_lexer_str_literal(sv_lexer_t *lx);
void sv_lexer_init(sv_lexer_t *lx, ant_t *js, const char *code, ant_offset_t clen, bool strict);
void sv_lexer_set_error_site(sv_lexer_t *lx);
void sv_lexer_save_state(const sv_lexer_t *lx, sv_lexer_state_t *st);
void sv_lexer_restore_state(sv_lexer_t *lx, const sv_lexer_state_t *st);
void sv_lexer_push_source(sv_lexer_t *lx, sv_lexer_checkpoint_t *cp, const char *code, ant_offset_t clen);
void sv_lexer_pop_source(sv_lexer_t *lx, const sv_lexer_checkpoint_t *cp);
uint8_t sv_lexer_next(sv_lexer_t *lx);
uint8_t sv_lexer_lookahead(sv_lexer_t *lx);
uint8_t sv_parsekeyword(const char *buf, size_t len);
bool is_space(int c);
bool is_digit(int c);
bool is_ident_begin(int c);
bool is_ident_continue(int c);
bool is_eval_or_arguments_name(const char *buf, size_t len);
bool is_strict_reserved_name(const char *buf, size_t len);
#define CHAR_DIGIT 0x01
#define CHAR_XDIGIT 0x02
#define CHAR_ALPHA 0x04
#define CHAR_IDENT 0x08
#define CHAR_IDENT1 0x10
#define CHAR_WS 0x20
#define CHAR_OCTAL 0x40
extern const uint8_t char_type[256];
#define IS_DIGIT(c) (char_type[(uint8_t)(c)] & CHAR_DIGIT)
#define IS_XDIGIT(c) (char_type[(uint8_t)(c)] & CHAR_XDIGIT)
#define IS_IDENT(c) (char_type[(uint8_t)(c)] & CHAR_IDENT)
#define IS_IDENT1(c) (char_type[(uint8_t)(c)] & CHAR_IDENT1)
#define IS_OCTAL(c) (char_type[(uint8_t)(c)] & CHAR_OCTAL)
#endif

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