117 lines
3.0 KiB
C#
117 lines
3.0 KiB
C#
//
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// Mono.Xml.XPath.Pattern
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//
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// Author:
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// Ben Maurer (bmaurer@users.sourceforge.net)
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//
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// (C) 2003 Ben Maurer
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//
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections;
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using System.IO;
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using System.Xml;
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using System.Xml.Schema;
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using System.Xml.XPath;
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using System.Xml.Xsl;
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using Mono.Xml.Xsl;
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namespace Mono.Xml.XPath
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{
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internal abstract class Pattern
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{
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internal static Pattern Compile (string s, Compiler comp)
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{
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return Compile (comp.patternParser.Compile (s));
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}
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internal static Pattern Compile (Expression e)
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{
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if (e is ExprUNION)
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return new UnionPattern (
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Compile (((ExprUNION)e).left),
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Compile (((ExprUNION)e).right)
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);
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if (e is ExprRoot)
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return new LocationPathPattern (
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new NodeTypeTest (Axes.Self, XPathNodeType.Root)
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);
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if (e is NodeTest)
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return new LocationPathPattern (
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(NodeTest)e
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);
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if (e is ExprFilter)
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return new LocationPathPattern (
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(ExprFilter)e
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);
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if (e is ExprSLASH)
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{
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Pattern p0 = Compile (((ExprSLASH)e).left);
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LocationPathPattern p1
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= (LocationPathPattern)Compile (((ExprSLASH)e).right);
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p1.SetPreviousPattern (p0, false);
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return p1;
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}
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if (e is ExprSLASH2)
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{
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if (((ExprSLASH2)e).left is ExprRoot)
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return Compile (((ExprSLASH2)e).right);
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Pattern p0 = Compile (((ExprSLASH2)e).left);
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LocationPathPattern p1
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= (LocationPathPattern)Compile (((ExprSLASH2)e).right);
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p1.SetPreviousPattern (p0, true);
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return p1;
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}
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if (e is XPathFunctionId)
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{
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ExprLiteral id = ((XPathFunctionId) e).Id as ExprLiteral;
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return new IdPattern (id.Value);
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}
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if (e is XsltKey)
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{
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return new KeyPattern ((XsltKey) e);
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}
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return null; // throw Exception outer this method.
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}
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public virtual double DefaultPriority { get { return 0.5; }}
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public virtual XPathNodeType EvaluatedNodeType {
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get { return XPathNodeType.All; }
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}
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public abstract bool Matches (XPathNavigator node, XsltContext ctx);
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}
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} |