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Diffstat (limited to 'runtime/CSharp3/Sources/Antlr3.Runtime/Tree/TreePatternParser.cs')
| -rw-r--r-- | runtime/CSharp3/Sources/Antlr3.Runtime/Tree/TreePatternParser.cs | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/runtime/CSharp3/Sources/Antlr3.Runtime/Tree/TreePatternParser.cs b/runtime/CSharp3/Sources/Antlr3.Runtime/Tree/TreePatternParser.cs deleted file mode 100644 index 5112335..0000000 --- a/runtime/CSharp3/Sources/Antlr3.Runtime/Tree/TreePatternParser.cs +++ /dev/null @@ -1,183 +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 InvalidOperationException = System.InvalidOperationException; - - public class TreePatternParser - { - protected TreePatternLexer tokenizer; - protected int ttype; - protected TreeWizard wizard; - protected ITreeAdaptor adaptor; - - public TreePatternParser( TreePatternLexer tokenizer, TreeWizard wizard, ITreeAdaptor adaptor ) - { - this.tokenizer = tokenizer; - this.wizard = wizard; - this.adaptor = adaptor; - ttype = tokenizer.NextToken(); // kickstart - } - - public virtual object Pattern() - { - if ( ttype == TreePatternLexer.Begin ) - { - return ParseTree(); - } - else if ( ttype == TreePatternLexer.Id ) - { - object node = ParseNode(); - if ( ttype == CharStreamConstants.EndOfFile ) - { - return node; - } - return null; // extra junk on end - } - return null; - } - - public virtual object ParseTree() - { - if ( ttype != TreePatternLexer.Begin ) - throw new InvalidOperationException("No beginning."); - - ttype = tokenizer.NextToken(); - object root = ParseNode(); - if ( root == null ) - { - return null; - } - while ( ttype == TreePatternLexer.Begin || - ttype == TreePatternLexer.Id || - ttype == TreePatternLexer.Percent || - ttype == TreePatternLexer.Dot ) - { - if ( ttype == TreePatternLexer.Begin ) - { - object subtree = ParseTree(); - adaptor.AddChild( root, subtree ); - } - else - { - object child = ParseNode(); - if ( child == null ) - { - return null; - } - adaptor.AddChild( root, child ); - } - } - - if ( ttype != TreePatternLexer.End ) - throw new InvalidOperationException("No end."); - - ttype = tokenizer.NextToken(); - return root; - } - - public virtual object ParseNode() - { - // "%label:" prefix - string label = null; - if ( ttype == TreePatternLexer.Percent ) - { - ttype = tokenizer.NextToken(); - if ( ttype != TreePatternLexer.Id ) - { - return null; - } - label = tokenizer.sval.ToString(); - ttype = tokenizer.NextToken(); - if ( ttype != TreePatternLexer.Colon ) - { - return null; - } - ttype = tokenizer.NextToken(); // move to ID following colon - } - - // Wildcard? - if ( ttype == TreePatternLexer.Dot ) - { - ttype = tokenizer.NextToken(); - IToken wildcardPayload = new CommonToken( 0, "." ); - TreeWizard.TreePattern node = - new TreeWizard.WildcardTreePattern( wildcardPayload ); - if ( label != null ) - { - node.label = label; - } - return node; - } - - // "ID" or "ID[arg]" - if ( ttype != TreePatternLexer.Id ) - { - return null; - } - string tokenName = tokenizer.sval.ToString(); - ttype = tokenizer.NextToken(); - if ( tokenName.Equals( "nil" ) ) - { - return adaptor.Nil(); - } - string text = tokenName; - // check for arg - string arg = null; - if ( ttype == TreePatternLexer.Arg ) - { - arg = tokenizer.sval.ToString(); - text = arg; - ttype = tokenizer.NextToken(); - } - - // create node - int treeNodeType = wizard.GetTokenType( tokenName ); - if ( treeNodeType == TokenTypes.Invalid ) - { - return null; - } - object node2; - node2 = adaptor.Create( treeNodeType, text ); - if ( label != null && node2.GetType() == typeof( TreeWizard.TreePattern ) ) - { - ( (TreeWizard.TreePattern)node2 ).label = label; - } - if ( arg != null && node2.GetType() == typeof( TreeWizard.TreePattern ) ) - { - ( (TreeWizard.TreePattern)node2 ).hasTextArg = true; - } - return node2; - } - } -} |