Source Code Cross Referenced for DebugParser.java in  » Parser » antlr-3.0.1 » org » antlr » runtime » debug » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Parser » antlr 3.0.1 » org.antlr.runtime.debug 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         [The "BSD licence"]
003:         Copyright (c) 2005-2006 Terence Parr
004:         All rights reserved.
005:
006:         Redistribution and use in source and binary forms, with or without
007:         modification, are permitted provided that the following conditions
008:         are met:
009:         1. Redistributions of source code must retain the above copyright
010:            notice, this list of conditions and the following disclaimer.
011:         2. Redistributions in binary form must reproduce the above copyright
012:            notice, this list of conditions and the following disclaimer in the
013:            documentation and/or other materials provided with the distribution.
014:         3. The name of the author may not be used to endorse or promote products
015:            derived from this software without specific prior written permission.
016:
017:         THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
018:         IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
019:         OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
020:         IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
021:         INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
022:         NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
023:         DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
024:         THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
025:         (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
026:         THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
027:         */
028:        package org.antlr.runtime.debug;
029:
030:        import org.antlr.runtime.*;
031:
032:        import java.io.IOException;
033:
034:        public class DebugParser extends Parser {
035:            /** Who to notify when events in the parser occur. */
036:            protected DebugEventListener dbg = null;
037:
038:            /** Used to differentiate between fixed lookahead and cyclic DFA decisions
039:             *  while profiling.
040:             */
041:            public boolean isCyclicDecision = false;
042:
043:            /** Create a normal parser except wrap the token stream in a debug
044:             *  proxy that fires consume events.
045:             */
046:            public DebugParser(TokenStream input, DebugEventListener dbg) {
047:                super (new DebugTokenStream(input, dbg));
048:                setDebugListener(dbg);
049:            }
050:
051:            public DebugParser(TokenStream input) {
052:                this (input, DebugEventSocketProxy.DEFAULT_DEBUGGER_PORT);
053:            }
054:
055:            public DebugParser(TokenStream input, int port) {
056:                super (new DebugTokenStream(input, null));
057:            }
058:
059:            /** Provide a new debug event listener for this parser.  Notify the
060:             *  input stream too that it should send events to this listener.
061:             */
062:            public void setDebugListener(DebugEventListener dbg) {
063:                if (input instanceof  DebugTokenStream) {
064:                    ((DebugTokenStream) input).setDebugListener(dbg);
065:                }
066:                this .dbg = dbg;
067:            }
068:
069:            public DebugEventListener getDebugListener() {
070:                return dbg;
071:            }
072:
073:            public void reportError(IOException e) {
074:                System.err.println(e);
075:                e.printStackTrace(System.err);
076:            }
077:
078:            public void beginResync() {
079:                dbg.beginResync();
080:            }
081:
082:            public void endResync() {
083:                dbg.endResync();
084:            }
085:
086:            public void beginBacktrack(int level) {
087:                dbg.beginBacktrack(level);
088:            }
089:
090:            public void endBacktrack(int level, boolean successful) {
091:                dbg.endBacktrack(level, successful);
092:            }
093:
094:            public void recoverFromMismatchedToken(IntStream input,
095:                    RecognitionException mte, int ttype, BitSet follow)
096:                    throws RecognitionException {
097:                System.err.println("recoverFromMismatchedToken");
098:                dbg.recognitionException(mte);
099:                super .recoverFromMismatchedToken(input, mte, ttype, follow);
100:            }
101:
102:            public void recoverFromMismatchedSet(IntStream input,
103:                    RecognitionException mte, BitSet follow)
104:                    throws RecognitionException {
105:                dbg.recognitionException(mte);
106:                super.recoverFromMismatchedSet(input, mte, follow);
107:            }
108:        }
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