1 /* 2 * [The "BSD licence"] 3 * Copyright (c) 2005-2008 Terence Parr 4 * All rights reserved. 5 * 6 * Conversion to C#: 7 * Copyright (c) 2008-2009 Sam Harwell, Pixel Mine, Inc. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 namespace Antlr.Runtime.Tree 34 { 35 using IList = System.Collections.IList; 36 using NotSupportedException = System.NotSupportedException; 37 38 /** <summary> 39 * Queues up nodes matched on left side of -> in a tree parser. This is 40 * the analog of RewriteRuleTokenStream for normal parsers. 41 * </summary> 42 */ 43 [System.Serializable] 44 public class RewriteRuleNodeStream : RewriteRuleElementStream 45 { 46 RewriteRuleNodeStream( ITreeAdaptor adaptor, string elementDescription )47 public RewriteRuleNodeStream( ITreeAdaptor adaptor, string elementDescription ) 48 : base( adaptor, elementDescription ) 49 { 50 } 51 52 /** <summary>Create a stream with one element</summary> */ RewriteRuleNodeStream( ITreeAdaptor adaptor, string elementDescription, object oneElement )53 public RewriteRuleNodeStream( ITreeAdaptor adaptor, string elementDescription, object oneElement ) 54 : base( adaptor, elementDescription, oneElement ) 55 { 56 } 57 58 /** <summary>Create a stream, but feed off an existing list</summary> */ RewriteRuleNodeStream( ITreeAdaptor adaptor, string elementDescription, IList elements )59 public RewriteRuleNodeStream( ITreeAdaptor adaptor, string elementDescription, IList elements ) 60 : base( adaptor, elementDescription, elements ) 61 { 62 } 63 NextNode()64 public virtual object NextNode() 65 { 66 return NextCore(); 67 } 68 ToTree( object el )69 protected override object ToTree( object el ) 70 { 71 return adaptor.DupNode( el ); 72 } 73 Dup( object el )74 protected override object Dup( object el ) 75 { 76 // we dup every node, so don't have to worry about calling dup; short- 77 // circuited next() so it doesn't call. 78 throw new NotSupportedException( "dup can't be called for a node stream." ); 79 } 80 } 81 } 82