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Diffstat (limited to 'runtime/CSharp3/Sources/Antlr3.Runtime/Tree/RewriteRuleTokenStream.cs')
-rw-r--r-- | runtime/CSharp3/Sources/Antlr3.Runtime/Tree/RewriteRuleTokenStream.cs | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/runtime/CSharp3/Sources/Antlr3.Runtime/Tree/RewriteRuleTokenStream.cs b/runtime/CSharp3/Sources/Antlr3.Runtime/Tree/RewriteRuleTokenStream.cs new file mode 100644 index 0000000..4441e47 --- /dev/null +++ b/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." ); + } + } +} |