/*******************************************************************************
 * Copyright (c) 2004, 2008 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    IBM - Initial API and implementation
 *******************************************************************************/
package org.eclipse.cdt.core.parser.tests.scanner;

import org.eclipse.cdt.core.dom.ICodeReaderFactory;
import org.eclipse.cdt.core.model.ITranslationUnit;
import org.eclipse.cdt.core.parser.CodeReader;
import org.eclipse.cdt.core.parser.ICodeReaderCache;
import org.eclipse.cdt.internal.core.dom.parser.EmptyCodeReaderCache;

/**
 * @author jcamelon
 */
public class FileCodeReaderFactory implements ICodeReaderFactory {

    private static FileCodeReaderFactory instance;
	private ICodeReaderCache cache = null;

    private FileCodeReaderFactory(ICodeReaderCache cache)
    {
		this.cache = cache;
    }
    
    /* (non-Javadoc)
     * @see org.eclipse.cdt.core.dom.ICodeReaderFactory#getUniqueIdentifier()
     */
    public int getUniqueIdentifier() {
        return 3;
    }

    /* (non-Javadoc)
     * @see org.eclipse.cdt.core.dom.ICodeReaderFactory#createCodeReaderForTranslationUnit(java.lang.String)
     */
    public CodeReader createCodeReaderForTranslationUnit(String path) {
		return cache.get(path);
	}

    public CodeReader createCodeReaderForTranslationUnit(ITranslationUnit tu) {
		return new CodeReader(tu.getPath().toOSString(), tu.getContents());
    }
    
    /* (non-Javadoc)
     * @see org.eclipse.cdt.core.dom.ICodeReaderFactory#createCodeReaderForInclusion(org.eclipse.cdt.core.dom.ICodeReaderFactoryCallback, java.lang.String)
     */
    public CodeReader createCodeReaderForInclusion(String path) {
		return cache.get(path);
	}

    /**
     * @return
     */
    public static FileCodeReaderFactory getInstance() {
        if( instance == null )
            instance = new FileCodeReaderFactory(new EmptyCodeReaderCache());
        return instance;
    }

	public ICodeReaderCache getCodeReaderCache() {
		return cache;
	}

}
