ref: df846b08571664c312fa3c5e316db8ca24ba4d80
dir: /include/cst_item.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 */
/*************************************************************************/
/* */
/* Item */
/* */
/*************************************************************************/
#ifndef _CST_ITEM_H__
#define _CST_ITEM_H__
#include "cst_file.h"
#include "cst_features.h"
/* Everyone needs these so forward define these */
typedef struct cst_relation_struct cst_relation;
typedef struct cst_utterance_struct cst_utterance;
typedef struct cst_item_struct cst_item;
/* So items, relations and utterances can be used as vals */
CST_VAL_USER_TYPE_DCLS(relation,cst_relation)
CST_VAL_USER_TYPE_DCLS(item,cst_item)
CST_VAL_USER_TYPE_DCLS(utterance,cst_utterance)
typedef struct cst_item_contents_struct {
cst_features *features;
cst_features *relations;
} cst_item_contents;
struct cst_item_struct {
cst_item_contents *contents; /* the shared part of an item */
cst_relation *relation;
cst_item *n;
cst_item *p;
cst_item *u;
cst_item *d;
};
/* Constructor functions */
cst_item *new_item_relation(cst_relation *r,cst_item *i);
cst_item_contents *new_item_contents(cst_item *i);
/* Remove this item from this references */
void delete_item(cst_item *item);
void item_contents_set(cst_item *current, cst_item *i);
void item_unref_contents(cst_item *i);
cst_item *item_as(const cst_item *i,const char *rname);
cst_utterance *item_utt(const cst_item *i);
/* List accessor/manipulator function */
cst_item *item_next(const cst_item *i);
cst_item *item_prev(const cst_item *i);
cst_item *item_append(cst_item *i,cst_item *new_item);
cst_item *item_prepend(cst_item *i,cst_item *new_item);
/* Tree accessor/manipulator function */
cst_item *item_parent(const cst_item *i);
cst_item *item_nth_daughter(const cst_item *i,int n);
cst_item *item_daughter(const cst_item *i);
cst_item *item_last_daughter(const cst_item *i);
cst_item *item_first(const cst_item *i);
cst_item *item_last(const cst_item *i);
cst_item *item_add_daughter(cst_item *i,cst_item *new_item);
cst_item *item_append_sibling(cst_item *i,cst_item *new_item);
cst_item *item_prepend_sibling(cst_item *i,cst_item *new_item);
/* Feature accessor/manipulator functions */
int item_feat_present(const cst_item *i,const char *name);
int item_feat_remove(const cst_item *i,const char *name);
cst_features *item_feats(const cst_item *i);
const cst_val *item_feat(const cst_item *i,const char *name);
int item_feat_int(const cst_item *i,const char *name);
float item_feat_float(const cst_item *i,const char *name);
const char *item_feat_string(const cst_item *i,const char *name);
void item_set(const cst_item *i,const char *name,const cst_val *val);
void item_set_int(const cst_item *i,const char *name,int val);
void item_set_float(const cst_item *i,const char *name,float val);
void item_set_string(const cst_item *i,const char *name,const char *val);
#define item_name(I) item_feat_string(I,"name")
int item_equal(const cst_item *a, const cst_item *b);
const char *ffeature_string(const cst_item *item,const char *featpath);
int ffeature_int(const cst_item *item,const char *featpath);
float ffeature_float(const cst_item *item,const char *featpath);
const cst_val *ffeature(const cst_item *item,const char *featpath);
cst_item* path_to_item(const cst_item *item,const char *featpath);
/* Feature function, for features that are derived algorithmically from others. */
typedef const cst_val *(*cst_ffunction)(const cst_item *i);
CST_VAL_USER_FUNCPTR_DCLS(ffunc,cst_ffunction)
void ff_register(cst_features *ffeatures, const char *name,
cst_ffunction f);
void ff_unregister(cst_features *ffeatures, const char *name);
/* Generalized item hook function, like cst_uttfunc. */
typedef cst_val *(*cst_itemfunc)(cst_item *i);
CST_VAL_USER_FUNCPTR_DCLS(itemfunc,cst_itemfunc)
#endif