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EST_Features.cc
/*************************************************************************/
/* */
/* Centre for Speech Technology Research */
/* University of Edinburgh, UK */
/* Copyright (c) 1998 */
/* 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. */
/* */
/* THE UNIVERSITY OF EDINBURGH 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 THE UNIVERSITY OF EDINBURGH 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 */
/* Date : March 1998 */
/*-----------------------------------------------------------------------*/
/* Feature value pairs in a EST_TKVL */
/*=======================================================================*/
#include <cstdlib>
#include "EST_Features.h"
#include "ling_class/EST_Item.h"
#include "EST_error.h"
#include "EST_String.h"
#include "EST_Token.h"
/* Features may used as Vals */
VAL_REGISTER_CLASS(feats,EST_Features)
EST_Val EST_Features::feature_default_value("0");
// Sometimes we need a set of features even though there aren't any
static EST_Features default_features;
EST_Features::EST_Features()
{
features = new EST_TKVL<EST_String, EST_Val>;
}
EST_Features::EST_Features(const EST_Features &f)
{
features = new EST_TKVL<EST_String, EST_Val>;
*features = *f.features;
}
EST_Features::~EST_Features()
{
if (features != NULL)
{
delete features;
features=NULL;
}
}
const EST_Val &EST_Features::val(const char *name, const EST_Val &def) const
{
// Because so many access are from char* literals we all access
// directly rather than requiring the creation of an EST_String
EST_Litem *p;
for (p=features->list.head(); p; p=p->next())
{
if (features->list(p).k == name)
return features->list(p).v;
}
return def;
}
const EST_Val &EST_Features::val(const char *name) const
{
// Because so many access are from char* literals we all access
// directly rather than requiring the creation of an EST_String
EST_Litem *p;
for (p=features->list.head(); p; p=p->next())
{
if (features->list(p).k == name)
return features->list(p).v;
}
EST_error("{FND} Feature %s not defined\n", name);
return feature_default_value;
}
const EST_Val &EST_Features::val_path(const EST_String &name, const EST_Val &d) const
{
// For when name contains references to sub-features
if (strchr(name,'.') == NULL)
return val(name, d);
else
{
EST_String nname = name;
EST_String fname = nname.before(".");
const EST_Val &v = val(fname, d);
if (v.type() == val_type_feats)
return feats(v)->val_path(nname.after("."), d);
else
return d;
}
}
const EST_Val &EST_Features::val_path(const EST_String &name) const
{
// For when name contains references to sub-features
if (strchr(name,'.') == NULL)
return val(name);
else
{
EST_String nname = name;
EST_String fname = nname.before(".");
const EST_Val &v = val(fname);
if (v.type() == val_type_feats)
return feats(v)->val_path(nname.after("."));
else
EST_error("Feature %s not feature valued\n", (const char *)fname);
return feature_default_value; // wont get here
}
}
EST_Features &EST_Features::A(const EST_String &path,EST_Features &def) const
{
EST_Features *ff = new EST_Features(def);
return *feats(val(path,est_val(ff)));
}
int EST_Features::present(const EST_String &name) const
{
if (strchr(name,'.') == NULL)
return features->present(name);
EST_String nname = name;
if (features->present(nname.before(".")))
{
const EST_Val &v = val(nname.before("."));
if (v.type() == val_type_feats)
return feats(v)->present(nname.after("."));
else
return FALSE;
}
else
return FALSE;
}
void EST_Features::set_path(const EST_String &name, const EST_Val &sval)
{
// Builds sub features (if necessary)
if (strchr(name,'.') == NULL)
set_val(name,sval);
else
{
EST_String nname = name;
EST_String fname = nname.before(".");
if (present(fname))
{
const EST_Val &v = val(fname);
if (v.type() == val_type_feats)
feats(v)->set_path(nname.after("."),sval);
else
EST_error("Feature %s not feature valued\n",
(const char *)fname);
}
else
{
EST_Features f;
set(fname,f);
A(fname).set_path(nname.after("."),sval);
}
}
}
EST_Features &EST_Features::operator=(const EST_Features &x)
{
*features = *x.features;
return *this;
}
void merge_features(EST_Features &to,EST_Features &from)
{
EST_Features::Entries p;
for(p.begin(from); p; ++p)
to.set_val(p->k,p->v);
}
EST_String error_name(const EST_Features &a)
{
(void)a;
return "<<Features>>";
}
#if defined(INSTANTIATE_TEMPLATES)
typedef EST_TKVI<EST_String, EST_Val> EST_Features_Entry;
Instantiate_TStructIterator_T(EST_Features, EST_Features::IPointer, EST_Features_Entry, Features_itt)
Instantiate_TIterator_T(EST_Features, EST_Features::IPointer, EST_Features_Entry, Features_itt)
#endif
EST_Features
Definition EST_Features.h:62
EST_Features::A
EST_Features & A(const EST_String &path) const
Definition EST_Features.h:169
EST_Features::set
void set(const EST_String &name, int ival)
Definition EST_Features.h:185
EST_Features::operator=
EST_Features & operator=(const EST_Features &a)
Definition EST_Features.cc:192
EST_Features::val
const EST_Val & val(const char *name) const
Definition EST_Features.cc:87
EST_Features::set_path
void set_path(const EST_String &name, const EST_Val &sval)
Definition EST_Features.cc:164
EST_Features::set_val
void set_val(const EST_String &name, const EST_Val &sval)
Definition EST_Features.h:216
EST_Features::f
const EST_Val & f(const EST_String &path) const
Definition EST_Features.h:114
EST_Features::present
int present(const EST_String &name) const
Definition EST_Features.cc:147
EST_Features::val_path
const EST_Val & val_path(const EST_String &path) const
Definition EST_Features.cc:121
EST_String
Definition EST_String.h:70
EST_String::before
EST_String before(int pos, int len=0) const
Part before position.
Definition EST_String.h:286
EST_String::after
EST_String after(int pos, int len=1) const
Part after pos+len.
Definition EST_String.h:318
EST_TIterator::begin
void begin(const Container &over)
Set the iterator ready to run over this container.
Definition EST_TIterator.h:115
EST_TKVI
Definition EST_TKVL.h:55
EST_Val
Definition EST_Val.h:70
EST_Val::type
const val_type type(void) const
Definition EST_Val.h:126
EST_Features::IPointer
Definition EST_Features.h:280