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