diff options
Diffstat (limited to 'runtime/CSharp3/Sources/Antlr3.Runtime/Tree/ITreeVisitorAction.cs')
-rw-r--r-- | runtime/CSharp3/Sources/Antlr3.Runtime/Tree/ITreeVisitorAction.cs | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/runtime/CSharp3/Sources/Antlr3.Runtime/Tree/ITreeVisitorAction.cs b/runtime/CSharp3/Sources/Antlr3.Runtime/Tree/ITreeVisitorAction.cs deleted file mode 100644 index bcf0156..0000000 --- a/runtime/CSharp3/Sources/Antlr3.Runtime/Tree/ITreeVisitorAction.cs +++ /dev/null @@ -1,90 +0,0 @@ -/* - * [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 Antlr.Runtime.Misc; - - /** <summary> - * How to execute code for node t when a visitor visits node t. Execute - * pre() before visiting children and execute post() after visiting children. - * </summary> - */ - public interface ITreeVisitorAction - { - /** <summary> - * Execute an action before visiting children of t. Return t or - * a rewritten t. It is up to the visitor to decide what to do - * with the return value. Children of returned value will be - * visited if using TreeVisitor.visit(). - * </summary> - */ - object Pre( object t ); - - /** <summary> - * Execute an action after visiting children of t. Return t or - * a rewritten t. It is up to the visitor to decide what to do - * with the return value. - * </summary> - */ - object Post( object t ); - } - - public class TreeVisitorAction - : ITreeVisitorAction - { - private readonly Func<object, object> _preAction; - private readonly Func<object, object> _postAction; - - public TreeVisitorAction( Func<object, object> preAction, Func<object, object> postAction ) - { - _preAction = preAction; - _postAction = postAction; - } - - public object Pre( object t ) - { - if ( _preAction != null ) - return _preAction( t ); - - return t; - } - - public object Post( object t ) - { - if ( _postAction != null ) - return _postAction( t ); - - return t; - } - } -} |