#ifndef AML_PARSER_H_
#define AML_PARSER_H_

#include <stddef.h>

struct acpi_namespace;

enum parse_status {
	PARSE_OK = 0,
	PARSE_EOF = -1,
	PARSE_NOMEM = -2,
	PARSE_BADSTRING = -3,
	PARSE_UNKNOWNOP = -4,
	PARSE_BADTYPE = -5,
	PARSE_BADREF = -6,
};

struct aml_parser_scope {
	struct acpi_object *scope_object;
	size_t scope_end;
	struct aml_parser_scope *next;
};

struct aml_parser {
	int revision;
	unsigned char *start, *end;
	unsigned char *ptr, *saved_ptr;
	struct acpi_namespace *ns;
	struct aml_parser_scope *cur_scope;
};

extern void aml_parser_init(struct aml_parser *parser, void *p, size_t len);
extern void aml_parser_set_namespace(struct aml_parser *parser, struct acpi_namespace *ns);
extern int aml_parser_peek(struct aml_parser *parser);
extern int aml_parser_peek_next(struct aml_parser *parser);
extern int aml_parser_advance(struct aml_parser *parser);
extern unsigned int aml_parser_cursorpos(struct aml_parser *parser);
extern void aml_parser_save_cursor(struct aml_parser *parser);
extern void aml_parser_load_cursor(struct aml_parser *parser);
extern void aml_parser_add_object(struct aml_parser *parser, struct acpi_object *object);
extern void aml_parser_push_scope(struct aml_parser *parser, struct acpi_object *object);
extern void aml_parser_pop_scope(struct aml_parser *parser);

extern enum parse_status aml_parser_parse_into_namespace(struct aml_parser *parser, struct acpi_namespace *ns);
extern struct acpi_object *aml_parser_resolve_path(struct aml_parser *parser, const char *path);

extern const char *parse_status_string(enum parse_status status);

#endif