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