91 lines
1.9 KiB
C
91 lines
1.9 KiB
C
/*
|
|
* File: lval.h
|
|
* Author: sam
|
|
*
|
|
* Created on 18 May 2014, 21:22
|
|
*/
|
|
|
|
#ifndef LVAL_H
|
|
#define LVAL_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
//Forward declarations (if thats what they are called)
|
|
struct lval;
|
|
typedef struct lval lval;
|
|
|
|
struct lval_func;
|
|
typedef struct lval_func lval_func;
|
|
|
|
#include "main.h"
|
|
#include "lenv.h"
|
|
|
|
#define LVAL_IS_TRUE(val) (val->type == LVAL_NUM && fabs(val->data.num) > DBL_EPSILON)
|
|
#define LVAL_IS_FALSE(val) (val->type == LVAL_NUM && fabs(val->data.num) <= DBL_EPSILON)
|
|
|
|
enum VAL_TYPE { LVAL_ERR, LVAL_NUM, LVAL_SYM, LVAL_FUNC, LVAL_S_EXPR, LVAL_Q_EXPR, LVAL_EXIT };
|
|
enum VAL_ERROR { LERR_DIV_ZERO, LERR_BAD_OP, LERR_BAD_NUM, LERR_BAD_SYM, LERR_OTHER, LERR_SYNTAX };
|
|
typedef enum VAL_TYPE VAL_TYPE;
|
|
typedef enum VAL_ERROR VAL_ERROR;
|
|
|
|
typedef lval*(*lbuiltin)(lenv*, lval*);
|
|
|
|
struct lval_func {
|
|
char* name;
|
|
lbuiltin builtin;
|
|
lenv* env;
|
|
lval* formals;
|
|
lval* body;
|
|
lval* va;
|
|
};
|
|
|
|
struct lval {
|
|
enum VAL_TYPE type;
|
|
union {
|
|
double_t num;
|
|
char* sym;
|
|
struct {
|
|
enum VAL_ERROR num;
|
|
char* detail;
|
|
} err;
|
|
struct lval_func* func;
|
|
} data;
|
|
|
|
int cell_count;
|
|
struct lval** cell_list;
|
|
|
|
};
|
|
|
|
lval* lval_new(int type);
|
|
lval* lval_num(double_t x);
|
|
lval* lval_sym(char* x);
|
|
lval* lval_s_expr();
|
|
lval* lval_q_expr();
|
|
lval* lval_builtin(lbuiltin func, char* name);
|
|
lval* lval_lambda(lval* formals, lval* body);
|
|
lval* lval_exit();
|
|
|
|
lval* lval_add(lval* val, lval* x);
|
|
lval* lval_pop(lval* val, int i);
|
|
lval* lval_take(lval* val, int i);
|
|
lval* lval_join(lval* a, lval* b);
|
|
|
|
lval* lval_call(lenv* env, lval* function, lval* args);
|
|
BOOL lval_equal(lval* a, lval* b);
|
|
|
|
void lval_delete(lval* val);
|
|
lval* lval_copy(lval* current);
|
|
|
|
lval* lval_err(VAL_ERROR x);
|
|
lval* lval_err_detail(VAL_ERROR x, char* format, ...);
|
|
char* lval_str_name(VAL_TYPE type);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* LVAL_H */
|
|
|