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 33 namespace Antlr.Runtime.Debug 34 { 35 using Obsolete = System.ObsoleteAttribute; 36 using ITreeAdaptor = Antlr.Runtime.Tree.ITreeAdaptor; 37 using ITreeNodeStream = Antlr.Runtime.Tree.ITreeNodeStream; 38 39 /** <summary> 40 * Debug any tree node stream. The constructor accepts the stream 41 * and a debug listener. As node stream calls come in, debug events 42 * are triggered. 43 * </summary> 44 */ 45 public class DebugTreeNodeStream : ITreeNodeStream 46 { 47 protected IDebugEventListener dbg; 48 protected ITreeAdaptor adaptor; 49 protected ITreeNodeStream input; 50 protected bool initialStreamState = true; 51 52 /** <summary>Track the last mark() call result value for use in rewind().</summary> */ 53 protected int lastMarker; 54 55 public DebugTreeNodeStream( ITreeNodeStream input, 56 IDebugEventListener dbg ) 57 { 58 this.input = input; 59 this.adaptor = input.TreeAdaptor; 60 this.input.UniqueNavigationNodes = true; 61 DebugListener = dbg; 62 } 63 64 #region Properties 65 public virtual IDebugEventListener DebugListener 66 { 67 get 68 { 69 return dbg; 70 } 71 set 72 { 73 dbg = value; 74 } 75 } 76 public virtual int Index 77 { 78 get 79 { 80 return input.Index; 81 } 82 } 83 public virtual ITokenStream TokenStream 84 { 85 get 86 { 87 return input.TokenStream; 88 } 89 } 90 public virtual ITreeAdaptor TreeAdaptor 91 { 92 get 93 { 94 return adaptor; 95 } 96 } 97 public virtual object TreeSource 98 { 99 get 100 { 101 return input; 102 } 103 } 104 /** <summary> 105 * It is normally this object that instructs the node stream to 106 * create unique nav nodes, but to satisfy interface, we have to 107 * define it. It might be better to ignore the parameter but 108 * there might be a use for it later, so I'll leave. 109 * </summary> 110 */ 111 public bool UniqueNavigationNodes 112 { 113 get 114 { 115 return input.UniqueNavigationNodes; 116 } 117 set 118 { 119 input.UniqueNavigationNodes = value; 120 } 121 } 122 123 #endregion 124 125 public virtual void Consume() 126 { 127 object node = input.LT( 1 ); 128 input.Consume(); 129 dbg.ConsumeNode( node ); 130 } 131 132 public virtual object this[int i] 133 { 134 get 135 { 136 return input[i]; 137 } 138 } 139 140 public virtual object LT( int i ) 141 { 142 object node = input.LT( i ); 143 int ID = adaptor.GetUniqueID( node ); 144 string text = adaptor.GetText( node ); 145 int type = adaptor.GetType( node ); 146 dbg.LT( i, node ); 147 return node; 148 } 149 150 public virtual int LA( int i ) 151 { 152 object node = input.LT( i ); 153 int ID = adaptor.GetUniqueID( node ); 154 string text = adaptor.GetText( node ); 155 int type = adaptor.GetType( node ); 156 dbg.LT( i, node ); 157 return type; 158 } 159 160 public virtual int Mark() 161 { 162 lastMarker = input.Mark(); 163 dbg.Mark( lastMarker ); 164 return lastMarker; 165 } 166 167 public virtual void Rewind( int marker ) 168 { 169 dbg.Rewind( marker ); 170 input.Rewind( marker ); 171 } 172 173 public virtual void Rewind() 174 { 175 dbg.Rewind(); 176 input.Rewind( lastMarker ); 177 } 178 179 public virtual void Release( int marker ) 180 { 181 } 182 183 public virtual void Seek( int index ) 184 { 185 // TODO: implement seek in dbg interface 186 // db.seek(index); 187 input.Seek( index ); 188 } 189 190 public virtual int Count 191 { 192 get 193 { 194 return input.Count; 195 } 196 } 197 198 public virtual string SourceName 199 { 200 get 201 { 202 return TokenStream.SourceName; 203 } 204 } 205 206 public virtual void ReplaceChildren( object parent, int startChildIndex, int stopChildIndex, object t ) 207 { 208 input.ReplaceChildren( parent, startChildIndex, stopChildIndex, t ); 209 } 210 211 public virtual string ToString( object start, object stop ) 212 { 213 return input.ToString( start, stop ); 214 } 215 } 216 } 217
