/usr/include/speech_tools/EST_Contents.h is in libestools2.1-dev 1:2.1~release-2build2.
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/* */
/* Centre for Speech Technology Research */
/* University of Edinburgh, UK */
/* Copyright (c) 1995,1996 */
/* 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 */
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/* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF */
/* THIS SOFTWARE. */
/* */
/*************************************************************************/
/* Author : Alan W Black */
/* Date : May 1996 */
/*-----------------------------------------------------------------------*/
/* A class for representing ints floats and strings */
/* */
/*=======================================================================*/
#ifndef __EST_CONTENTS_H__
#define __EST_CONTENTS_H__
/** A class for containing some other (arbitrary) class
Not general enough to call itself a run-time type system
Is designed to solve the problem of holding user
specified information.
Keeps reference count to know when to delete contents
This is done on two levels EST_Contents and Contents_Data
*/
class EST_Content_Data{
private:
int refs;
void *data;
void (*free_func)(void *data);
public:
EST_Content_Data(void *d,void (*f)(void *d)) {free_func=f; data=d; refs=1;}
~EST_Content_Data() { free_func(data); }
///
int unref() { return --refs; }
///
int ref() { return ++refs; }
///
int the_refs() { return refs; }
void *contents() { return data; }
EST_Content_Data &operator=(const EST_Content_Data &c)
{refs = c.refs; data = c.data; free_func = free_func; return *this;}
};
/** More contents */
class EST_Contents{
private:
EST_Content_Data *content_data;
void unref_contents(void)
{ if ((content_data != 0) &&
(content_data->unref() == 0))
delete content_data;}
public:
EST_Contents() { content_data = 0; }
EST_Contents(void *p,void (*free_func)(void *p))
{ content_data = new EST_Content_Data(p,free_func); }
~EST_Contents() { unref_contents(); }
void set_contents(void *p,void (*free_func)(void *p))
{ unref_contents(); content_data = new EST_Content_Data(p,free_func);}
void *get_contents() const
{return (content_data ? content_data->contents() : 0);}
///
int refs() const { return ((content_data == 0) ? 0 :
content_data->the_refs());}
EST_Contents &operator=(const EST_Contents &c)
{ unref_contents();
content_data = c.content_data;
if (content_data != 0) content_data->ref();
return *this; }
};
#endif
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