/*******************************************************************************
 * Copyright (c) 2005, 2010 BEA Systems 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:
 *     BEA Systems - initial implementation
 *     
 *******************************************************************************/

package org.eclipse.jst.jsp.core.internal.java.jspel;

import java.util.List;
import java.util.Map;

import org.eclipse.jst.jsp.core.jspel.ELProblem;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion;
import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionCollection;

/**
 * The code checker for the jsf/jsp EL.
 */
public final class ELGenerator {
	/**
     * Constructor.
     *
     * @param locator A valid ELLocator instance, may not be null.
     */
    public ELGenerator() {
    } // constructor
	
    /**
     * Check the netuiel AST and set diagnostics as necessary.
     * 
     * @param root
     * @param currentNode
     * @param result
     * @param codeMap
     * @param document
     * @param jspReferenceRegion
     * @param contentStart
     * @param contentLength
     * @return a {@link List} of {@link ELProblem}s reported by the {@link ELGeneratorVisitor} this {@link ELGenerator} uses
     */
    public List generate(ASTExpression root, IStructuredDocumentRegion currentNode, StringBuffer result, Map codeMap, IStructuredDocument document, ITextRegionCollection jspReferenceRegion, int contentStart, int contentLength) {
		ELGeneratorVisitor visitor = new ELGeneratorVisitor(result, currentNode, codeMap, document, jspReferenceRegion, contentStart);
		visitor.startFunctionDefinition(root.getFirstToken().beginColumn - 1);
		root.jjtAccept(visitor, null);
		visitor.endFunctionDefinition(root.getLastToken().endColumn - 1);
		
		return visitor.getELProblems();
    }
}