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 {
	jsoff_t pos;
	jsoff_t toff;
	jsoff_t tlen;
	jsval_t tval;
	uint8_t tok;
	uint8_t consumed;
	bool had_newline;
	} sv_lexer_state_t;

	typedef struct {
	ant_t *js;
	const char *code;
	jsoff_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;
	jsoff_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, jsoff_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, jsoff_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);

	bool is_space(int c);
	bool is_digit(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);

	#endif