#ifndef XPCG_LEX_H_
#define XPCG_LEX_H_

#include "status.h"
#include "token.h"

#include <blue/core/queue.h>
#include <blue/ds/dict.h>
#include <blue/ds/string.h>
#include <stdint.h>

struct lex {
	struct lex_symbol_node *lex_sym_tree;
	struct line_source *lex_source;
	enum status lex_status;

	b_queue lex_queue;

	b_string *lex_temp;
	b_queue lex_state;
	unsigned int lex_brace_depth;

	struct file_cell lex_token_start, lex_token_end;
};

struct lex_symbol_node {
	char s_char;
	struct lex_token_def *s_def;

	b_queue_entry s_entry;
	b_queue s_children;
};

struct lex_token_def {
	int id;
	const char *name;
	uint64_t name_hash;
};

struct token;
struct line_source;

extern struct lex *lex_create(struct line_source *src);
extern void lex_destroy(struct lex *lex);

extern enum status lex_get_status(const struct lex *lex);
extern struct line_source *lex_get_line_source(const struct lex *lex);
extern const struct file_cell *lex_get_cursor(const struct lex *lex);
extern struct token *lex_peek(struct lex *lex);
extern void lex_advance(struct lex *lex);

#endif