001: /*
002: * Copyright 2005-2006 Sun Microsystems, Inc. All Rights Reserved.
003: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004: *
005: * This code is free software; you can redistribute it and/or modify it
006: * under the terms of the GNU General Public License version 2 only, as
007: * published by the Free Software Foundation. Sun designates this
008: * particular file as subject to the "Classpath" exception as provided
009: * by Sun in the LICENSE file that accompanied this code.
010: *
011: * This code is distributed in the hope that it will be useful, but WITHOUT
012: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
014: * version 2 for more details (a copy is included in the LICENSE file that
015: * accompanied this code).
016: *
017: * You should have received a copy of the GNU General Public License version
018: * 2 along with this work; if not, write to the Free Software Foundation,
019: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020: *
021: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022: * CA 95054 USA or visit www.sun.com if you need additional information or
023: * have any questions.
024: */
025:
026: package com.sun.tools.javac.parser;
027:
028: import java.util.Map;
029: import java.util.HashMap;
030: import com.sun.tools.javac.tree.JCTree;
031: import com.sun.tools.javac.tree.TreeInfo;
032: import com.sun.tools.javac.util.Position;
033: import com.sun.tools.javac.util.List;
034: import com.sun.tools.javac.util.Version;
035:
036: import static com.sun.tools.javac.tree.JCTree.*;
037:
038: /**
039: * This class is similar to Parser except that it stores ending
040: * positions for the tree nodes.
041: *
042: * <p><b>This is NOT part of any API supported by Sun Microsystems.
043: * If you write code that depends on this, you do so at your own risk.
044: * This code and its internal interfaces are subject to change or
045: * deletion without notice.</b></p>
046: */
047: @Version("@(#)EndPosParser.java 1.13 07/05/05")
048: public class EndPosParser extends Parser {
049:
050: public EndPosParser(Factory fac, Lexer S, boolean keepDocComments) {
051: super (fac, S, keepDocComments);
052: this .S = S;
053: endPositions = new HashMap<JCTree, Integer>();
054: }
055:
056: private Lexer S;
057:
058: /** A hashtable to store ending positions
059: * of source ranges indexed by the tree nodes.
060: * Defined only if option flag genEndPos is set.
061: */
062: Map<JCTree, Integer> endPositions;
063:
064: /** {@inheritDoc} */
065: @Override
066: protected void storeEnd(JCTree tree, int endpos) {
067: int errorEndPos = getErrorEndPos();
068: endPositions.put(tree, errorEndPos > endpos ? errorEndPos
069: : endpos);
070: }
071:
072: /** {@inheritDoc} */
073: @Override
074: protected <T extends JCTree> T to(T t) {
075: storeEnd(t, S.endPos());
076: return t;
077: }
078:
079: /** {@inheritDoc} */
080: @Override
081: protected <T extends JCTree> T toP(T t) {
082: storeEnd(t, S.prevEndPos());
083: return t;
084: }
085:
086: @Override
087: public JCCompilationUnit compilationUnit() {
088: JCCompilationUnit t = super .compilationUnit();
089: t.endPositions = endPositions;
090: return t;
091: }
092:
093: /** {@inheritDoc} */
094: @Override
095: JCExpression parExpression() {
096: int pos = S.pos();
097: JCExpression t = super .parExpression();
098: return toP(F.at(pos).Parens(t));
099: }
100:
101: /** {@inheritDoc} */
102: @Override
103: public int getEndPos(JCTree tree) {
104: return TreeInfo.getEndPos(tree, endPositions);
105: }
106:
107: }
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