ref: 0d060442250e7966087cc4e1678cf46ea5978671
dir: /include/cst_features.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 */
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/* THIS SOFTWARE. */
/* */
/*************************************************************************/
/* Author: Alan W Black (awb@cs.cmu.edu) */
/* Date: December 1999 */
/*************************************************************************/
/* */
/* feature-values lists */
/* */
/*************************************************************************/
#ifndef _CST_FEATURES_H__
#define _CST_FEATURES_H__
#include "cst_alloc.h"
#include "cst_val.h"
#include "cst_string.h"
typedef struct cst_featvalpair_struct {
const char *name;
cst_val *val;
struct cst_featvalpair_struct *next;
} cst_featvalpair;
typedef struct cst_features_struct {
struct cst_featvalpair_struct *head;
cst_alloc_context ctx;
cst_val *owned_strings; /* fnames that are owned by this struct */
/* Link to other cst_features that we search too */
const struct cst_features_struct *linked;
} cst_features;
/* Constructor functions */
cst_features *new_features(void);
cst_features *new_features_local(cst_alloc_context ctx);
void delete_features(cst_features *f);
/* Accessor functions */
int feat_int(const cst_features *f, const char *name);
float feat_float(const cst_features *f, const char *name);
const char *feat_string(const cst_features *f, const char *name);
const cst_val *feat_val(const cst_features *f, const char *name);
int get_param_int(const cst_features *f, const char *name,int def);
float get_param_float(const cst_features *f, const char *name, float def);
const char *get_param_string(const cst_features *f, const char *name, const char *def);
const cst_val *get_param_val(const cst_features *f, const char *name, cst_val *def);
/* Setting functions */
void feat_set_int(cst_features *f, const char *name, int v);
void feat_set_float(cst_features *f, const char *name, float v);
void feat_set_string(cst_features *f, const char *name, const char *v);
void feat_set(cst_features *f, const char *name,const cst_val *v);
int feat_remove(cst_features *f,const char *name);
int feat_present(const cst_features *f,const char *name);
int feat_length(const cst_features *f);
/* Feature names are expected to be literals -- its *much* faster to do */
/* look ups and less alloc/frees are necesssary. Almosts always this is */
/* fine, but when you are making up new fnames, you can get a copy of the */
/* string that will be deleted when the cst_features is deleted */
const char *feat_own_string(cst_features *f,const char *name);
CST_VAL_USER_TYPE_DCLS(features,cst_features)
int feat_copy_into(const cst_features *from,cst_features *to);
/* Link FROM into TO so FROM's features will be searched after TO's features */
int feat_link_into(const cst_features *from,cst_features *to);
/* For debugging */
int cst_feat_print(cst_file fd,const cst_features *f);
#endif