mcs/class/System.XML/Mono.Xml.Xsl.Operations/XslApplyTemplates.cs

   1 //
   2 // XslApplyTemplates.cs
   3 //
   4 // Authors:
   5 //      Ben Maurer (bmaurer@users.sourceforge.net)
   6 //      Atsushi Enomoto (ginga@kit.hi-ho.ne.jp)
   7 //
   8 // (C) 2003 Ben Maurer
   9 // (C) 2003 Atsushi Enomoto
  10 //
  11
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System;
  34 using System.Collections;
  35 using System.Xml;
  36 using System.Xml.XPath;
  37 using System.Xml.Xsl;
  38
  39 namespace Mono.Xml.Xsl.Operations {
  40
  41         internal class XslApplyTemplates : XslCompiledElement {
  42                 XPathExpression select;
  43                 XmlQualifiedName mode;
  44                 ArrayList withParams;
  45                 XslSortEvaluator sortEvaluator;
  46
  47                 public XslApplyTemplates (Compiler c) : base (c) {}
  48
  49                 protected override void Compile (Compiler c)
  50                 {
  51                         select = c.CompileExpression (c.GetAttribute ("select"));
  52                         mode = c.ParseQNameAttribute ("mode");
  53                         ArrayList sorterList = null;
  54                         if (c.Input.MoveToFirstChild ()) {
  55                                 do {
  56                                         switch (c.Input.NodeType) {
  57                                         case XPathNodeType.Comment:
  58                                         case XPathNodeType.ProcessingInstruction:
  59                                         case XPathNodeType.Whitespace:
  60                                         case XPathNodeType.SignificantWhitespace:
  61                                                 continue;
  62                                         case XPathNodeType.Element:
  63                                                 if (c.Input.NamespaceURI != XsltNamespace)
  64                                                         throw new XsltCompileException ("Unexpected element", null, c.Input); // TODO: fwd compat
  65
  66                                                 switch (c.Input.LocalName)
  67                                                 {
  68                                                         case "with-param":
  69                                                                 if (withParams == null)
  70                                                                         withParams = new ArrayList ();
  71                                                                 withParams.Add (new XslVariableInformation (c));
  72                                                                 break;
  73
  74                                                         case "sort":
  75                                                                 if (sorterList == null)
  76                                                                         sorterList = new ArrayList ();
  77                                                                 if (select == null)
  78                                                                         select = c.CompileExpression ("*");
  79                                                                 sorterList.Add (new Sort (c));
  80                                                                 //c.AddSort (select, new Sort (c));
  81                                                                 break;
  82                                                         default:
  83                                                                 throw new XsltCompileException ("Unexpected element", null, c.Input); // todo forwards compat
  84                                                 }
  85                                                 break;
  86                                         default:
  87                                                 throw new XsltCompileException ("Unexpected node type " + c.Input.NodeType, null, c.Input);     // todo forwards compat
  88                                         }
  89                                 } while (c.Input.MoveToNext ());
  90                                 c.Input.MoveToParent ();
  91                         }
  92                         if (sorterList != null)
  93                                 sortEvaluator = new XslSortEvaluator (select,
  94                                         (Sort []) sorterList.ToArray (typeof (Sort)));
  95                 }
  96
  97                 public override void Evaluate (XslTransformProcessor p)
  98                 {
  99                         if (select == null)
 100                                 p.ApplyTemplates (p.CurrentNode.SelectChildren (XPathNodeType.All), mode, withParams);
 101                         else {
 102                                 XPathNodeIterator iter = sortEvaluator != null ?
 103                                         sortEvaluator.SortedSelect (p) :
 104                                         p.Select (select);
 105                                 p.ApplyTemplates (iter, mode, withParams);
 106                         }
 107                 }
 108         }
 109 }