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/*
* [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." );
}
}
}
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