#ifndef APLWC_H
#define APLWC_H

#include <stdint.h>
#include <stddef.h>

enum aplwc_rc {
	APLWC_OK,
	APLWC_OUT_OF_MEMORY,
	APLWC_NOT_YET_IMPLEMENTED,
	APLWC_INVALID_UTF8,
	APLWC_INVALID_SYNTAX,

	APLWC_RC_LAST = APLWC_INVALID_SYNTAX
};

struct aplwc;

struct aplwc_ref {
	struct aplwc *aplwc;
	int id;
};

typedef struct { struct aplwc_ref ref; } AplwcLine;
typedef struct { struct aplwc_ref ref; } AplwcValue;

struct aplwc_fns {
	void *(*alloc)(size_t, size_t, size_t *);
	void (*dealloc)(void *);
};

struct aplwc *aplwc_new(struct aplwc_fns, enum aplwc_rc *);
void aplwc_destroy(struct aplwc *);
void aplwc_clear_line(AplwcLine *);
void aplwc_clear_value(AplwcValue *);
int aplwc_valid_line(AplwcLine);
int aplwc_valid_value(AplwcValue);
const char *aplwc_errstr_rc(enum aplwc_rc);
const char *aplwc_errstr(struct aplwc *);
enum aplwc_rc aplwc_last_error(struct aplwc *);
AplwcLine aplwc_read(struct aplwc *, const char *);
void aplwc_free_line(AplwcLine);
AplwcValue aplwc_eval(AplwcLine);
void aplwc_free_value(AplwcValue);
const char *aplwc_value_string(AplwcValue);
enum aplwc_rc aplwc_load_module(struct aplwc *, const char *, const char *, int n);

#endif /* APLWC_H */