225 lines
7.1 KiB
C++
225 lines
7.1 KiB
C++
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/*************************************************************************/
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/* */
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/* Centre for Speech Technology Research */
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/* University of Edinburgh, UK */
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/* Copyright (c) 1996 */
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/* All Rights Reserved. */
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/* */
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/* Permission is hereby granted, free of charge, to use and distribute */
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/* this software and its documentation without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of this work, and to */
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/* permit persons to whom this work is furnished to do so, subject to */
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/* the following conditions: */
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/* 1. The code must retain the above copyright notice, this list of */
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/* conditions and the following disclaimer. */
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/* 2. Any modifications must be clearly marked as such. */
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/* 3. Original authors' names are not deleted. */
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/* 4. The authors' names are not used to endorse or promote products */
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/* derived from this software without specific prior written */
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/* permission. */
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/* */
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/* THE UNIVERSITY OF EDINBURGH AND THE CONTRIBUTORS TO THIS WORK */
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/* DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING */
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/* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT */
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/* SHALL THE UNIVERSITY OF EDINBURGH NOR THE CONTRIBUTORS BE LIABLE */
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/* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES */
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/* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN */
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/* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, */
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/* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF */
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/* THIS SOFTWARE. */
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/* */
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/*************************************************************************/
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#include "EST_unix.h"
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#include "EST_ling_class.h"
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/** @name Feature and Val Classes Example Code
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*/
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//@{
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int main(void)
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{
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/** @name Adding basic information to an EST_Item
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*
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* An item such as
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* <graphic fileref="../arch_doc/eq01.gif" format="gif"></graphic>
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* is constructed as follows: (note that
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* the attributes are in capitals by linguistic convention only:
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* attribute names are case sensitive and can be upper or lower
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* case).
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*/
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//@{
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//@{ code
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EST_Item p;
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p.set("POS", "Noun");
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p.set("NAME", "example");
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p.set("FOCUS", "+");
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p.set("DURATION", 2.76);
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p.set("STRESS", 2);
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//@} code
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/** The type of the values in features is a
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* <classname>EST_Val</classname> class, which is a union which can
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* store ints, floats, EST_Strings, void pointers, and
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* <classname>EST_Features</classname>. The overloaded function
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* facility of C++ means that the <function>set()</function> can be
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* used for all of these.
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*/
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//@}
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/** @name Accessing basic information in an Item
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*
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* When accessing the features, the type must be
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* specified. This is done most easily by using of a series of
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* functions whose type is coded by a capital letter:
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* </para>
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* <formalpara><title><function>F()</function></title><para> return value as a
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* float</para></formalpara>
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* <formalpara><title><function>I()</function></title><para> return value as a
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* integer</para></formalpara>
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* <formalpara><title><function>S()</function></title><para> return value as a
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* <formalpara><title><function>A()</function></title><para> return value as a
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* EST_Features</para></formalpara>
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* <para>
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*/
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//@{
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//@{ code
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cout << "Part of speech for p is " << p.S("POS") << endl;
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cout << "Duration for p is " << p.F("DURATION") << endl;
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cout << "Stress value for p is " << p.I("STRESS") << endl;
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//@} code
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/** </para>
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* <SIDEBAR>
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* <TITLE>Output</TITLE>
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* <screen>
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* "Noun"
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* 2.75
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* 1
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* </screen>
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* </SIDEBAR>
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* <para>
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* A optional default value can be given if a result is always desired
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*/
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//@{ code
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cout << "Part of speech for p is "
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<< p.S("POS") << endl;
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cout << "Syntactic Category for p is "
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<< p.S("CAT", "Noun") << endl; // noerror
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//@} code
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//@}
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/** @name Nested feature structures in items
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*
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* Nested feature structures such as <xref linkend="eq11">
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* <example ID="eq11">
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* <title>Example eq11</title>
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* <graphic fileref="../arch_doc/eq05.gif" format="gif"></graphic>
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* </example>
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* can be created in a number of ways:
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*/
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//@{
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//@{ code
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p.set("NAME", "d");
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p.set("VOICE", "+");
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p.set("CONTINUANT", "-");
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p.set("SONORANT", "-");
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EST_Features f;
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p.set("PLACE OF ARTICULATION", f); // copy in empty feature set here
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p.A("PLACE OF ARTICULATION").set("CORONAL", "+");
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p.A("PLACE OF ARTICULATION").set("ANTERIOR", "+");
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//@} code
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/** or by filling the values in an EST_Features object and
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* copying it in:
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*/
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//@{ code
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EST_Features f2;
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f2.set("CORONAL", "+");
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f2.set("ANTERIOR", "+");
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p.set("PLACE OF ARTICULATION", f2);
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//@} code
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/** Nested features can be accessed by multiple calls to the
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* accessing commands:
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*/
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//@{ code
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cout << "Anterior value is: " << p.A("PLACE OF ARTICULATION").S("ANTERIOR");
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cout << "Coronal value is: " << p.A("PLACE OF ARTICULATION").S("CORONAL");
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//@} code
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/** The first command is <function>A()</function> because PLACE is a
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* feature structure, and the second command is
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* <function>S()</function> because it returns a string (the
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* value or ANTRIOR or CORONAL). A shorthand is provided to
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* extract the value in a single statement:
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*/
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//@{ code
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cout << "Anterior value is: " << p.S("PLACE OF ARTICULATION.ANTERIOR");
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cout << "Coronal value is: " << p.S("PLACE OF ARTICULATION.CORONAL");
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//@} code
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/** Again, as the last value to be returned is a string
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* <function>S()</function> must be used. This shorthand can also be used
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* to set the features:
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*/
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//@{ code
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p.set("PLACE OF ARTICULATION.CORONAL", "+");
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p.set("PLACE OF ARTICULATION.ANTERIOR", "+");
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//@} code
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/** this is the easiest and most commonly used method. */
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//@}
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/** @name Utility functions for items
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*
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* The presence of a attribute can be checked using
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* <function>f_present()</function>, which returns true if the
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* attribute is in the item:
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*/
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//@{
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//@{ code
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cout << "This is true: " << p.f_present("PLACE OF ARTICULATION");
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cout << "This is false: " << p.f_present("MANNER");
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//@} code
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/** A attribute can be removed by <function>f_remove</function>
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*/
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//@{ code
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p.f_remove("PLACE OF ARTICULATION");
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//@} code
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//@}
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exit(0);
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}
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//@}
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