1 files changed, 137 insertions, 0 deletions
diff --git a/runtime/CSharp3/Sources/Antlr3.Runtime.Debug/DebugTreeParser.cs b/runtime/CSharp3/Sources/Antlr3.Runtime.Debug/DebugTreeParser.cs
new file mode 100644
index 0000000..6461387
--- /dev/null
+++ b/runtime/CSharp3/Sources/Antlr3.Runtime.Debug/DebugTreeParser.cs
@@ -0,0 +1,137 @@
+/*
+ * [The "BSD licence"]
+ * Copyright (c) 2005-2008 Terence Parr
+ * All rights reserved.
+ *
+ * Conversion to C#:
+ * Copyright (c) 2008-2009 Sam Harwell, Pixel Mine, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+namespace Antlr.Runtime.Debug
+{
+    using Antlr.Runtime.JavaExtensions;
+
+    using Console = System.Console;
+    using IOException = System.IO.IOException;
+    using ITreeNodeStream = Antlr.Runtime.Tree.ITreeNodeStream;
+    using TreeParser = Antlr.Runtime.Tree.TreeParser;
+
+    public class DebugTreeParser : TreeParser
+    {
+        /** <summary>Who to notify when events in the parser occur.</summary> */
+        public IDebugEventListener dbg = null;
+
+        /** <summary>
+         *  Used to differentiate between fixed lookahead and cyclic DFA decisions
+         *  while profiling.
+         *  </summary>
+         */
+        public bool isCyclicDecision = false;
+
+        /** <summary>
+         *  Create a normal parser except wrap the token stream in a debug
+         *  proxy that fires consume events.
+         *  </summary>
+         */
+        public DebugTreeParser( ITreeNodeStream input, IDebugEventListener dbg, RecognizerSharedState state )
+            : base( input is DebugTreeNodeStream ? input : new DebugTreeNodeStream( input, dbg ), state )
+        {
+            SetDebugListener(dbg);
+        }
+
+        public DebugTreeParser( ITreeNodeStream input, RecognizerSharedState state )
+            : base( input is DebugTreeNodeStream ? input : new DebugTreeNodeStream( input, null ), state )
+        {
+        }
+
+        public DebugTreeParser( ITreeNodeStream input, IDebugEventListener dbg )
+            : this( input is DebugTreeNodeStream ? input : new DebugTreeNodeStream( input, dbg ), dbg, null )
+        {
+        }
+
+        public override IDebugEventListener DebugListener
+        {
+            get
+            {
+                return dbg;
+            }
+        }
+
+        /** <summary>
+         *  Provide a new debug event listener for this parser.  Notify the
+         *  input stream too that it should send events to this listener.
+         *  </summary>
+         */
+        public virtual void SetDebugListener(IDebugEventListener value)
+        {
+            if (input is DebugTreeNodeStream)
+                ((DebugTreeNodeStream)input).DebugListener = value;
+
+            this.dbg = value;
+        }
+
+        public virtual void ReportError( IOException e )
+        {
+            Console.Error.WriteLine( e );
+            ExceptionExtensions.PrintStackTrace( e, Console.Error );
+        }
+
+        public override void ReportError( RecognitionException e )
+        {
+            dbg.RecognitionException( e );
+        }
+
+        protected override object GetMissingSymbol( IIntStream input,
+                                          RecognitionException e,
+                                          int expectedTokenType,
+                                          BitSet follow )
+        {
+            object o = base.GetMissingSymbol( input, e, expectedTokenType, follow );
+            dbg.ConsumeNode( o );
+            return o;
+        }
+
+        public override void BeginResync()
+        {
+            dbg.BeginResync();
+        }
+
+        public override void EndResync()
+        {
+            dbg.EndResync();
+        }
+
+        public virtual void BeginBacktrack( int level )
+        {
+            dbg.BeginBacktrack( level );
+        }
+
+        public virtual void EndBacktrack( int level, bool successful )
+        {
+            dbg.EndBacktrack( level, successful );
+        }
+    }
+}