Mercurial > jdk8-mips64-public > langtools / annotate
src/share/classes/com/sun/tools/javac/parser/EndPosParser.java@eff38cc97183 (annotated)
src/share/classes/com/sun/tools/javac/parser/EndPosParser.java
Tue, 16 Sep 2008 18:35:18 -0700
- author
- jjg
- date
- Tue, 16 Sep 2008 18:35:18 -0700
- changeset 113
- eff38cc97183
- parent 111
- a92b756a888f
- child 117
- 24a47c3062fe
- permissions
- -rw-r--r--
6574134: Allow for alternative implementation of Name Table with garbage collection of name bytes
Reviewed-by: darcy, mcimadamore
| duke@1 | 1 | /* |
| duke@1 | 2 | * Copyright 2005-2006 Sun Microsystems, Inc. All Rights Reserved. |
| duke@1 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| duke@1 | 4 | * |
| duke@1 | 5 | * This code is free software; you can redistribute it and/or modify it |
| duke@1 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| duke@1 | 7 | * published by the Free Software Foundation. Sun designates this |
| duke@1 | 8 | * particular file as subject to the "Classpath" exception as provided |
| duke@1 | 9 | * by Sun in the LICENSE file that accompanied this code. |
| duke@1 | 10 | * |
| duke@1 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| duke@1 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| duke@1 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| duke@1 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| duke@1 | 15 | * accompanied this code). |
| duke@1 | 16 | * |
| duke@1 | 17 | * You should have received a copy of the GNU General Public License version |
| duke@1 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| duke@1 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| duke@1 | 20 | * |
| duke@1 | 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| duke@1 | 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| duke@1 | 23 | * have any questions. |
| duke@1 | 24 | */ |
| duke@1 | 25 | |
| duke@1 | 26 | package com.sun.tools.javac.parser; |
| duke@1 | 27 | |
| duke@1 | 28 | import java.util.Map; |
| duke@1 | 29 | import java.util.HashMap; |
| duke@1 | 30 | import com.sun.tools.javac.tree.JCTree; |
| duke@1 | 31 | import com.sun.tools.javac.tree.TreeInfo; |
| duke@1 | 32 | |
| duke@1 | 33 | import static com.sun.tools.javac.tree.JCTree.*; |
| duke@1 | 34 | |
| duke@1 | 35 | /** |
| duke@1 | 36 | * This class is similar to Parser except that it stores ending |
| duke@1 | 37 | * positions for the tree nodes. |
| duke@1 | 38 | * |
| duke@1 | 39 | * <p><b>This is NOT part of any API supported by Sun Microsystems. |
| duke@1 | 40 | * If you write code that depends on this, you do so at your own risk. |
| duke@1 | 41 | * This code and its internal interfaces are subject to change or |
| duke@1 | 42 | * deletion without notice.</b></p> |
| duke@1 | 43 | */ |
| jjg@111 | 44 | public class EndPosParser extends JavacParser { |
| duke@1 | 45 | |
| jjg@111 | 46 | public EndPosParser(ParserFactory fac, Lexer S, boolean keepDocComments, boolean keepLineMap) { |
| jjg@111 | 47 | super(fac, S, keepDocComments, keepLineMap); |
| duke@1 | 48 | this.S = S; |
| duke@1 | 49 | endPositions = new HashMap<JCTree,Integer>(); |
| duke@1 | 50 | } |
| duke@1 | 51 | |
| duke@1 | 52 | private Lexer S; |
| duke@1 | 53 | |
| duke@1 | 54 | /** A hashtable to store ending positions |
| duke@1 | 55 | * of source ranges indexed by the tree nodes. |
| duke@1 | 56 | * Defined only if option flag genEndPos is set. |
| duke@1 | 57 | */ |
| duke@1 | 58 | Map<JCTree, Integer> endPositions; |
| duke@1 | 59 | |
| duke@1 | 60 | /** {@inheritDoc} */ |
| duke@1 | 61 | @Override |
| duke@1 | 62 | protected void storeEnd(JCTree tree, int endpos) { |
| duke@1 | 63 | int errorEndPos = getErrorEndPos(); |
| duke@1 | 64 | endPositions.put(tree, errorEndPos > endpos ? errorEndPos : endpos); |
| duke@1 | 65 | } |
| duke@1 | 66 | |
| duke@1 | 67 | /** {@inheritDoc} */ |
| duke@1 | 68 | @Override |
| duke@1 | 69 | protected <T extends JCTree> T to(T t) { |
| duke@1 | 70 | storeEnd(t, S.endPos()); |
| duke@1 | 71 | return t; |
| duke@1 | 72 | } |
| duke@1 | 73 | |
| duke@1 | 74 | /** {@inheritDoc} */ |
| duke@1 | 75 | @Override |
| duke@1 | 76 | protected <T extends JCTree> T toP(T t) { |
| duke@1 | 77 | storeEnd(t, S.prevEndPos()); |
| duke@1 | 78 | return t; |
| duke@1 | 79 | } |
| duke@1 | 80 | |
| duke@1 | 81 | @Override |
| jjg@111 | 82 | public JCCompilationUnit parseCompilationUnit() { |
| jjg@111 | 83 | JCCompilationUnit t = super.parseCompilationUnit(); |
| duke@1 | 84 | t.endPositions = endPositions; |
| duke@1 | 85 | return t; |
| duke@1 | 86 | } |
| duke@1 | 87 | |
| duke@1 | 88 | /** {@inheritDoc} */ |
| duke@1 | 89 | @Override |
| duke@1 | 90 | JCExpression parExpression() { |
| duke@1 | 91 | int pos = S.pos(); |
| duke@1 | 92 | JCExpression t = super.parExpression(); |
| duke@1 | 93 | return toP(F.at(pos).Parens(t)); |
| duke@1 | 94 | } |
| duke@1 | 95 | |
| duke@1 | 96 | /** {@inheritDoc} */ |
| duke@1 | 97 | @Override |
| duke@1 | 98 | public int getEndPos(JCTree tree) { |
| duke@1 | 99 | return TreeInfo.getEndPos(tree, endPositions); |
| duke@1 | 100 | } |
| duke@1 | 101 | |
| duke@1 | 102 | } |
