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/*
 * Copyright (c) 2001-2013 Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 */

package com.sun.msv.reader.trex.classic;

import com.sun.msv.datatype.xsd.StringType;
import com.sun.msv.datatype.xsd.TokenType;
import com.sun.msv.datatype.xsd.WhiteSpaceProcessor;
import com.sun.msv.grammar.Expression;
import com.sun.msv.reader.ExpressionWithoutChildState;
import com.sun.msv.util.StringPair;

/**
 * parses <string> pattern.
 * 
 * @author Kohsuke KAWAGUCHI
 */
public class StringState extends ExpressionWithoutChildState
{
    protected final StringBuffer text = new StringBuffer();
    
    public void characters( char[] buf, int from, int len ) {
        text.append(buf,from,len);
    }
    
    public void ignorableWhitespace( char[] buf, int from, int len ) {
        text.append(buf,from,len);
    }
    
    protected Expression makeExpression() {
        if("preserve".equals(startTag.getAttribute("whiteSpace")))
            return reader.pool.createValue(
                StringType.theInstance,
                new StringPair("","string"),
                text.toString() );
        else
            return reader.pool.createValue(
                TokenType.theInstance,
                new StringPair("","token"),
                WhiteSpaceProcessor.collapse(text.toString()) );
        
        // masquerade RELAX NG built-in datatypes
    }
}