1 /*************************************************************************/
2 /*                                                                       */
3 /*                  Language Technologies Institute                      */
4 /*                     Carnegie Mellon University                        */
5 /*                        Copyright (c) 1999                             */
6 /*                        All Rights Reserved.                           */
7 /*                                                                       */
8 /*  Permission is hereby granted, free of charge, to use and distribute  */
9 /*  this software and its documentation without restriction, including   */
10 /*  without limitation the rights to use, copy, modify, merge, publish,  */
11 /*  distribute, sublicense, and/or sell copies of this work, and to      */
12 /*  permit persons to whom this work is furnished to do so, subject to   */
13 /*  the following conditions:                                            */
14 /*   1. The code must retain the above copyright notice, this list of    */
15 /*      conditions and the following disclaimer.                         */
16 /*   2. Any modifications must be clearly marked as such.                */
17 /*   3. Original authors' names are not deleted.                         */
18 /*   4. The authors' names are not used to endorse or promote products   */
19 /*      derived from this software without specific prior written        */
20 /*      permission.                                                      */
21 /*                                                                       */
22 /*  CARNEGIE MELLON UNIVERSITY AND THE CONTRIBUTORS TO THIS WORK         */
23 /*  DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING      */
24 /*  ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT   */
25 /*  SHALL CARNEGIE MELLON UNIVERSITY NOR THE CONTRIBUTORS BE LIABLE      */
26 /*  FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES    */
27 /*  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN   */
28 /*  AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,          */
29 /*  ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF       */
30 /*  THIS SOFTWARE.                                                       */
31 /*                                                                       */
32 /*************************************************************************/
33 /*             Author:  Alan W Black (awb@cs.cmu.edu)                    */
34 /*               Date:  December 1999                                    */
35 /*************************************************************************/
36 /*                                                                       */
37 /*  Relation                                                             */
38 /*                                                                       */
39 /*************************************************************************/
40 #ifndef _CST_RELATION_H__
41 #define _CST_RELATION_H__
42 
43 #include "cst_file.h"
44 #include "cst_val.h"
45 #include "cst_features.h"
46 #include "cst_item.h"
47 #include "cst_utterance.h"
48 
49 struct cst_relation_struct {
50     char *name;
51     cst_features *features;
52     cst_utterance *utterance;
53     cst_item *head;
54     cst_item *tail;
55 };
56 
57 /* Constructor functions */
58 cst_relation *new_relation(const char *name, cst_utterance *u);
59 
60 void delete_relation(cst_relation *r);
61 
62 cst_item *relation_head(cst_relation *r);
63 cst_item *relation_tail(cst_relation *r);
64 const char *relation_name(cst_relation *r);
65 
66 cst_item *relation_append(cst_relation *r,cst_item *i);
67 cst_item *relation_prepend(cst_relation *r,cst_item *i);
68 
69 int relation_load(cst_relation *r, const char *filename);
70 int relation_save(cst_relation *r, const char *filename);
71 
72 #endif
73