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//
// XslForEach.cs
//
// Authors:
// Ben Maurer (bmaurer@users.sourceforge.net)
// Atsushi Enomoto (ginga@kit.hi-ho.ne.jp)
//
// (C) 2003 Ben Maurer
// (C) 2003 Atsushi Enomoto
//
//
// 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.Xml;
using System.Xml.XPath;
using System.Xml.Xsl;
namespace Mono.Xml.Xsl.Operations {
internal class XslForEach : XslCompiledElement {
XPathExpression select;
XslOperation children;
XslSortEvaluator sortEvaluator;
public XslForEach (Compiler c) : base (c) {}
protected override void Compile (Compiler c)
{
if (c.Debugger != null)
c.Debugger.DebugCompile (c.Input);
c.CheckExtraAttributes ("for-each", "select");
c.AssertAttribute ("select");
select = c.CompileExpression (c.GetAttribute ("select"));
ArrayList sorterList = null;
if (c.Input.MoveToFirstChild ()) {
bool alldone = true;
do {
if (c.Input.NodeType == XPathNodeType.Text)
{ alldone = false; break; }
if (c.Input.NodeType != XPathNodeType.Element)
continue;
if (c.Input.NamespaceURI != Compiler.XsltNamespace)
{ alldone = false; break; }
if (c.Input.LocalName != "sort")
{ alldone = false; break; }
//c.AddSort (select, new Sort (c));
if (sorterList == null)
sorterList = new ArrayList ();
sorterList.Add (new Sort (c));
} while (c.Input.MoveToNext ());
if (!alldone)
children = c.CompileTemplateContent ();
c.Input.MoveToParent ();
}
if (sorterList != null)
sortEvaluator = new XslSortEvaluator (select,
(Sort []) sorterList.ToArray (typeof (Sort)));
}
public override void Evaluate (XslTransformProcessor p)
{
if (p.Debugger != null)
p.Debugger.DebugExecute (p, this.DebugInput);
// This intelligent optimization causes poor compatibility bug shown in bug #457065
// if (children == null)
// return;
XPathNodeIterator iter = sortEvaluator != null ?
sortEvaluator.SortedSelect (p) :
p.Select (select);
while (p.NodesetMoveNext (iter)) {
p.PushNodeset (iter);
p.PushForEachContext ();
children.Evaluate (p);
p.PopForEachContext();
p.PopNodeset ();
}
}
}
}
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