Wed, 09 Apr 2008 13:41:45 +0100
5009937: hiding versus generics versus binary compatibility
Summary: missing implementation of JLS 8.4.8.3 (different arguments with same erasure not always triggering a compiler error)
Reviewed-by: jjg
1 /*
2 * Copyright 2005-2006 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
26 package com.sun.tools.javac.parser;
28 import java.util.Map;
29 import java.util.HashMap;
30 import com.sun.tools.javac.tree.JCTree;
31 import com.sun.tools.javac.tree.TreeInfo;
32 import com.sun.tools.javac.util.Position;
33 import com.sun.tools.javac.util.List;
35 import static com.sun.tools.javac.tree.JCTree.*;
37 /**
38 * This class is similar to Parser except that it stores ending
39 * positions for the tree nodes.
40 *
41 * <p><b>This is NOT part of any API supported by Sun Microsystems.
42 * If you write code that depends on this, you do so at your own risk.
43 * This code and its internal interfaces are subject to change or
44 * deletion without notice.</b></p>
45 */
46 public class EndPosParser extends Parser {
48 public EndPosParser(Factory fac, Lexer S, boolean keepDocComments) {
49 super(fac, S, keepDocComments);
50 this.S = S;
51 endPositions = new HashMap<JCTree,Integer>();
52 }
54 private Lexer S;
56 /** A hashtable to store ending positions
57 * of source ranges indexed by the tree nodes.
58 * Defined only if option flag genEndPos is set.
59 */
60 Map<JCTree, Integer> endPositions;
62 /** {@inheritDoc} */
63 @Override
64 protected void storeEnd(JCTree tree, int endpos) {
65 int errorEndPos = getErrorEndPos();
66 endPositions.put(tree, errorEndPos > endpos ? errorEndPos : endpos);
67 }
69 /** {@inheritDoc} */
70 @Override
71 protected <T extends JCTree> T to(T t) {
72 storeEnd(t, S.endPos());
73 return t;
74 }
76 /** {@inheritDoc} */
77 @Override
78 protected <T extends JCTree> T toP(T t) {
79 storeEnd(t, S.prevEndPos());
80 return t;
81 }
83 @Override
84 public JCCompilationUnit compilationUnit() {
85 JCCompilationUnit t = super.compilationUnit();
86 t.endPositions = endPositions;
87 return t;
88 }
90 /** {@inheritDoc} */
91 @Override
92 JCExpression parExpression() {
93 int pos = S.pos();
94 JCExpression t = super.parExpression();
95 return toP(F.at(pos).Parens(t));
96 }
98 /** {@inheritDoc} */
99 @Override
100 public int getEndPos(JCTree tree) {
101 return TreeInfo.getEndPos(tree, endPositions);
102 }
104 }