1 files changed, 86 insertions, 0 deletions
diff --git a/antlr-3.4/runtime/CSharp3/Sources/Antlr3.Runtime/Tree/RewriteRuleTokenStream.cs b/antlr-3.4/runtime/CSharp3/Sources/Antlr3.Runtime/Tree/RewriteRuleTokenStream.cs
new file mode 100644
index 0000000..4441e47
--- /dev/null
+++ b/antlr-3.4/runtime/CSharp3/Sources/Antlr3.Runtime/Tree/RewriteRuleTokenStream.cs
@@ -0,0 +1,86 @@
+/*
+ * [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 IList = System.Collections.IList;
+    using NotSupportedException = System.NotSupportedException;
+
+    [System.Serializable]
+    public class RewriteRuleTokenStream : RewriteRuleElementStream
+    {
+
+        public RewriteRuleTokenStream( ITreeAdaptor adaptor, string elementDescription )
+            : base( adaptor, elementDescription )
+        {
+        }
+
+        /** <summary>Create a stream with one element</summary> */
+        public RewriteRuleTokenStream( ITreeAdaptor adaptor, string elementDescription, object oneElement )
+            : base( adaptor, elementDescription, oneElement )
+        {
+        }
+
+        /** <summary>Create a stream, but feed off an existing list</summary> */
+        public RewriteRuleTokenStream( ITreeAdaptor adaptor, string elementDescription, IList elements )
+            : base( adaptor, elementDescription, elements )
+        {
+        }
+
+        /** <summary>Get next token from stream and make a node for it</summary> */
+        public virtual object NextNode()
+        {
+            IToken t = (IToken)NextCore();
+            return adaptor.Create( t );
+        }
+
+        public virtual IToken NextToken()
+        {
+            return (IToken)NextCore();
+        }
+
+        /** <summary>
+         *  Don't convert to a tree unless they explicitly call nextTree.
+         *  This way we can do hetero tree nodes in rewrite.
+         *  </summary>
+         */
+        protected override object ToTree( object el )
+        {
+            return el;
+        }
+
+        protected override object Dup( object el )
+        {
+            throw new NotSupportedException( "dup can't be called for a token stream." );
+        }
+    }
+}