/*
* Copyright (C) 2008 Universidade Federal de Campina Grande
*
* This file is part of OurGrid.
*
* OurGrid is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package org.ourgrid.common.specification.token;
import java.util.Map;
import org.ourgrid.common.specification.CodesTable;
import org.ourgrid.common.specification.io.CharReader;
/**
* This is a token entity that recognize punctuation symbols.
*
* @see org.ourgrid.common.specification.CodesTable
*/
public class Pointing extends Token {
/**
* The constructor.
*/
public Pointing() {
}
/**
* Tries to recognize a punctuation symbol and return a token using this
* symbol.
*
* @param theChar The symbol to be analyzed.
* @param reader The reader able to read characters from source.
* @return this Pointing token object if theChar was recognized as
* punctuation symbol and null otherwise.
*/
public Token readPointing( char theChar, CharReader reader ) {
Map<String,Integer> table = CodesTable.getInstance().getPointing();
String character = Character.toString( theChar );
if ( table.containsKey( character ) ) {
int code = table.get( character ).intValue();
this.setCode( code );
this.setLine( reader.getActualLine() );
if ( character.equals( CharReader.UNIX_LINE_SEPARATOR ) ) {
this.setSymbol( "\\n" );
} else {
this.setSymbol( character );
}
return this;
}
return null;
}
}