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/*
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* Copyright 2005-2006 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package com.sun.tools.javac.parser;
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import java.util.Map;
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import java.util.HashMap;
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import com.sun.tools.javac.tree.JCTree;
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import com.sun.tools.javac.tree.TreeInfo;
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import static com.sun.tools.javac.tree.JCTree.*;
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/**
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* This class is similar to Parser except that it stores ending
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* positions for the tree nodes.
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*
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* <p><b>This is NOT part of any API supported by Sun Microsystems.
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* If you write code that depends on this, you do so at your own risk.
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* This code and its internal interfaces are subject to change or
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* deletion without notice.</b></p>
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*/
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public class EndPosParser extends Parser {
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public EndPosParser(Factory fac, Lexer S, boolean keepDocComments) {
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super(fac, S, keepDocComments);
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this.S = S;
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endPositions = new HashMap<JCTree,Integer>();
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}
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private Lexer S;
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/** A hashtable to store ending positions
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* of source ranges indexed by the tree nodes.
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* Defined only if option flag genEndPos is set.
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*/
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Map<JCTree, Integer> endPositions;
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/** {@inheritDoc} */
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@Override
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protected void storeEnd(JCTree tree, int endpos) {
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int errorEndPos = getErrorEndPos();
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endPositions.put(tree, errorEndPos > endpos ? errorEndPos : endpos);
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}
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/** {@inheritDoc} */
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@Override
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protected <T extends JCTree> T to(T t) {
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storeEnd(t, S.endPos());
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return t;
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}
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/** {@inheritDoc} */
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@Override
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protected <T extends JCTree> T toP(T t) {
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storeEnd(t, S.prevEndPos());
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return t;
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}
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@Override
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public JCCompilationUnit compilationUnit() {
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JCCompilationUnit t = super.compilationUnit();
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t.endPositions = endPositions;
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return t;
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}
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/** {@inheritDoc} */
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@Override
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JCExpression parExpression() {
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int pos = S.pos();
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JCExpression t = super.parExpression();
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return toP(F.at(pos).Parens(t));
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}
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/** {@inheritDoc} */
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@Override
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public int getEndPos(JCTree tree) {
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return TreeInfo.getEndPos(tree, endPositions);
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}
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}
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