ref: 397265f5791291defa76487c2388e1898e2e433c
dir: /include/cst_val.h/
/*************************************************************************/
/* */
/* Language Technologies Institute */
/* Carnegie Mellon University */
/* Copyright (c) 1999 */
/* All Rights Reserved. */
/* */
/* Permission is hereby granted, free of charge, to use and distribute */
/* this software and its documentation without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of this work, and to */
/* permit persons to whom this work is furnished to do so, subject to */
/* the following conditions: */
/* 1. The code must retain the above copyright notice, this list of */
/* conditions and the following disclaimer. */
/* 2. Any modifications must be clearly marked as such. */
/* 3. Original authors' names are not deleted. */
/* 4. The authors' names are not used to endorse or promote products */
/* derived from this software without specific prior written */
/* permission. */
/* */
/* CARNEGIE MELLON UNIVERSITY AND THE CONTRIBUTORS TO THIS WORK */
/* DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING */
/* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT */
/* SHALL CARNEGIE MELLON UNIVERSITY NOR THE CONTRIBUTORS BE LIABLE */
/* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES */
/* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN */
/* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, */
/* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF */
/* THIS SOFTWARE. */
/* */
/*************************************************************************/
/* Author: Alan W Black (awb@cs.cmu.edu) */
/* Date: December 1999 */
/*************************************************************************/
/* */
/* Vals, typed objects */
/* */
/*************************************************************************/
#ifndef _CST_VAL_H__
#define _CST_VAL_H__
#include "cst_file.h"
#include "cst_string.h"
#include "cst_error.h"
#include "cst_alloc.h"
#include "cst_val_defs.h"
#include <stdint.h>
/* Only CONS can be an even number */
#define CST_VAL_TYPE_CONS 0
#define CST_VAL_TYPE_INT 1
#define CST_VAL_TYPE_FLOAT 3
#define CST_VAL_TYPE_STRING 5
#define CST_VAL_TYPE_FIRST_FREE 7
#define CST_VAL_TYPE_MAX 54
typedef struct cst_val_cons_struct {
struct cst_val_struct *car;
struct cst_val_struct *cdr;
} cst_val_cons;
#pragma incomplete cst_val_cons
typedef struct cst_val_atom_struct {
#ifdef WORDS_BIGENDIAN
#if UINTPTR_MAX > 0xfffffffful
int ref_count;
int type; /* order is here important */
#else
short ref_count;
short type; /* order is here important */
#endif
#else
#if UINTPTR_MAX > 0xfffffffful
int type; /* order is here important */
int ref_count;
#else
short type; /* order is here important */
short ref_count;
#endif
#endif
union
{
#if UINTPTR_MAX > 0xfffffffful
double fval;
long long ival;
void *vval;
#else
float fval;
int ival;
void *vval;
#endif
} v;
} cst_val_atom;
#pragma incomplete cst_val_atom
typedef struct cst_val_struct {
union
{
cst_val_cons cc;
cst_val_atom a;
} c;
} cst_val;
#pragma incomplete cst_val
typedef struct cst_val_def_struct {
const char *name;
void (*delete_function)(void *);
} cst_val_def;
#pragma incomplete cst_val_def
/* Constructor functions */
cst_val *int_val(int i);
cst_val *float_val(float f);
cst_val *string_val(const char *s);
cst_val *val_new_typed(int type, void *vv);
cst_val *cons_val(const cst_val *a, const cst_val *b);
/* Derefence and delete val if no other references */
void delete_val(cst_val *val);
void delete_val_list(cst_val *val);
/* Accessor functions */
int val_int(const cst_val *v);
float val_float(const cst_val *v);
const char *val_string(const cst_val *v);
void *val_void(const cst_val *v);
void *val_generic(const cst_val *v, int type, const char *stype);
const cst_val *val_car(const cst_val *v);
const cst_val *val_cdr(const cst_val *v);
const cst_val *set_cdr(cst_val *v1, const cst_val *v2);
const cst_val *set_car(cst_val *v1, const cst_val *v2);
int cst_val_consp(const cst_val *v);
/* Unsafe accessor function -- for the brave and foolish */
#define CST_VAL_STRING_LVAL(X) ((X)->c.a.v.vval)
#define CST_VAL_TYPE(X) ((X)->c.a.type)
#define CST_VAL_INT(X) ((X)->c.a.v.ival)
#define CST_VAL_FLOAT(X) ((X)->c.a.v.fval)
#define CST_VAL_STRING(X) ((const char *)(CST_VAL_STRING_LVAL(X)))
#define CST_VAL_VOID(X) ((X)->c.a.v.vval)
#define CST_VAL_CAR(X) ((X)->c.cc.car)
#define CST_VAL_CDR(X) ((X)->c.cc.cdr)
#define CST_VAL_REFCOUNT(X) ((X)->c.a.ref_count)
/* Some standard function */
int val_equal(const cst_val *a, const cst_val *b);
int val_less(const cst_val *a, const cst_val *b);
int val_greater(const cst_val *a, const cst_val *b);
int val_member(const cst_val *a, const cst_val *b);
int val_member_string (const char *a, const cst_val *b);
int val_stringp(const cst_val *a);
const cst_val *val_assoc_string(const char *v1,const cst_val *al);
void val_print(cst_file fd,const cst_val *v);
cst_val *val_readlist_string(const char *str);
cst_val *val_reverse(cst_val *v);
cst_val *val_append(cst_val *a,cst_val *b); /* destructive */
int val_length(const cst_val *l);
cst_val *cst_utf8_explode(const cst_string *utf8string);
cst_string *cst_implode(const cst_val *string_list);
cst_val *cst_utf8_ord(const cst_val *utf8_char);
cst_val *cst_utf8_chr(const cst_val *ord);
int cst_utf8_ord_string(const char *utf8_char);
/* make sure you know what you are doing before you call these */
int val_dec_refcount(const cst_val *b);
cst_val *val_inc_refcount(const cst_val *b);
#include "cst_val_const.h"
extern const cst_val_def cst_val_defs[];
/* Generic pointer vals */
typedef void cst_userdata;
CST_VAL_USER_TYPE_DCLS(userdata,cst_userdata)
#endif