1/*
2 * [The "BSD licence"]
3 * Copyright (c) 2005-2008 Terence Parr
4 * All rights reserved.
5 *
6 * Conversion to C#:
7 * Copyright (c) 2008-2009 Sam Harwell, Pixel Mine, Inc.
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. The name of the author may not be used to endorse or promote products
19 *    derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33namespace Antlr.Runtime.Debug
34{
35    /** <summary>
36     *  A blank listener that does nothing; useful for real classes so
37     *  they don't have to have lots of blank methods and are less
38     *  sensitive to updates to debug interface.
39     *  </summary>
40     */
41    public class BlankDebugEventListener : IDebugEventListener
42    {
43        public int RuleLevel
44        {
45            get;
46            protected set;
47        }
48
49        public virtual void Initialize()
50        {
51        }
52
53        public virtual void EnterRule( string grammarFileName, string ruleName )
54        {
55            if ( RuleLevel == 0 )
56                Commence();
57            RuleLevel++;
58        }
59        public virtual void ExitRule( string grammarFileName, string ruleName )
60        {
61            RuleLevel--;
62            if ( RuleLevel == 0 )
63                Terminate();
64        }
65        public virtual void EnterAlt( int alt )
66        {
67        }
68        public virtual void EnterSubRule( int decisionNumber )
69        {
70        }
71        public virtual void ExitSubRule( int decisionNumber )
72        {
73        }
74        public virtual void EnterDecision(int decisionNumber, bool couldBacktrack)
75        {
76        }
77        public virtual void ExitDecision( int decisionNumber )
78        {
79        }
80        public virtual void Location( int line, int pos )
81        {
82        }
83        public virtual void ConsumeToken( IToken token )
84        {
85        }
86        public virtual void ConsumeHiddenToken( IToken token )
87        {
88        }
89        public virtual void LT( int i, IToken t )
90        {
91        }
92        public virtual void Mark( int i )
93        {
94        }
95        public virtual void Rewind( int i )
96        {
97        }
98        public virtual void Rewind()
99        {
100        }
101        public virtual void BeginBacktrack( int level )
102        {
103        }
104        public virtual void EndBacktrack( int level, bool successful )
105        {
106        }
107        public virtual void RecognitionException( RecognitionException e )
108        {
109        }
110        public virtual void BeginResync()
111        {
112        }
113        public virtual void EndResync()
114        {
115        }
116        public virtual void SemanticPredicate( bool result, string predicate )
117        {
118        }
119        public virtual void Commence()
120        {
121        }
122        public virtual void Terminate()
123        {
124        }
125
126        #region Tree parsing stuff
127
128        public virtual void ConsumeNode( object t )
129        {
130        }
131        public virtual void LT( int i, object t )
132        {
133        }
134
135        #endregion
136
137
138        #region AST Stuff
139
140        public virtual void NilNode( object t )
141        {
142        }
143        public virtual void ErrorNode( object t )
144        {
145        }
146        public virtual void CreateNode( object t )
147        {
148        }
149        public virtual void CreateNode( object node, IToken token )
150        {
151        }
152        public virtual void BecomeRoot( object newRoot, object oldRoot )
153        {
154        }
155        public virtual void AddChild( object root, object child )
156        {
157        }
158        public virtual void SetTokenBoundaries( object t, int tokenStartIndex, int tokenStopIndex )
159        {
160        }
161
162        #endregion
163    }
164}
165
166