1 files changed, 167 insertions, 0 deletions
diff --git a/antlr-3.4/runtime/CSharp3/Sources/Antlr3.Runtime/Tree/ParseTree.cs b/antlr-3.4/runtime/CSharp3/Sources/Antlr3.Runtime/Tree/ParseTree.cs
new file mode 100644
index 0000000..149269a
--- /dev/null
+++ b/antlr-3.4/runtime/CSharp3/Sources/Antlr3.Runtime/Tree/ParseTree.cs
@@ -0,0 +1,167 @@
+/*
+ * [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.Tree
+{
+    using System.Collections.Generic;
+
+    using StringBuilder = System.Text.StringBuilder;
+
+    /** <summary>
+     *  A record of the rules used to match a token sequence.  The tokens
+     *  end up as the leaves of this tree and rule nodes are the interior nodes.
+     *  This really adds no functionality, it is just an alias for CommonTree
+     *  that is more meaningful (specific) and holds a String to display for a node.
+     *  </summary>
+     */
+    [System.Serializable]
+    public class ParseTree : BaseTree
+    {
+        public object payload;
+        public List<IToken> hiddenTokens;
+
+        public ParseTree( object label )
+        {
+            this.payload = label;
+        }
+
+        #region Properties
+        public override string Text
+        {
+            get
+            {
+                return ToString();
+            }
+            set
+            {
+            }
+        }
+        public override int TokenStartIndex
+        {
+            get
+            {
+                return 0;
+            }
+            set
+            {
+            }
+        }
+        public override int TokenStopIndex
+        {
+            get
+            {
+                return 0;
+            }
+            set
+            {
+            }
+        }
+        public override int Type
+        {
+            get
+            {
+                return 0;
+            }
+            set
+            {
+            }
+        }
+        #endregion
+
+        public override ITree DupNode()
+        {
+            return null;
+        }
+
+        public override string ToString()
+        {
+            if ( payload is IToken )
+            {
+                IToken t = (IToken)payload;
+                if ( t.Type == TokenTypes.EndOfFile )
+                {
+                    return "<EOF>";
+                }
+                return t.Text;
+            }
+            return payload.ToString();
+        }
+
+        /** <summary>
+         *  Emit a token and all hidden nodes before.  EOF node holds all
+         *  hidden tokens after last real token.
+         *  </summary>
+         */
+        public virtual string ToStringWithHiddenTokens()
+        {
+            StringBuilder buf = new StringBuilder();
+            if ( hiddenTokens != null )
+            {
+                for ( int i = 0; i < hiddenTokens.Count; i++ )
+                {
+                    IToken hidden = (IToken)hiddenTokens[i];
+                    buf.Append( hidden.Text );
+                }
+            }
+            string nodeText = this.ToString();
+            if ( !nodeText.Equals( "<EOF>" ) )
+                buf.Append( nodeText );
+            return buf.ToString();
+        }
+
+        /** <summary>
+         *  Print out the leaves of this tree, which means printing original
+         *  input back out.
+         *  </summary>
+         */
+        public virtual string ToInputString()
+        {
+            StringBuilder buf = new StringBuilder();
+            ToStringLeaves( buf );
+            return buf.ToString();
+        }
+
+        protected virtual void ToStringLeaves( StringBuilder buf )
+        {
+            if ( payload is IToken )
+            { // leaf node token?
+                buf.Append( this.ToStringWithHiddenTokens() );
+                return;
+            }
+            for ( int i = 0; Children != null && i < Children.Count; i++ )
+            {
+                ParseTree t = (ParseTree)Children[i];
+                t.ToStringLeaves( buf );
+            }
+        }
+    }
+}