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

   1 //
   2 // XslForEach.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 using System;
  13 using System.Collections;
  14 using System.Xml;
  15 using System.Xml.XPath;
  16 using System.Xml.Xsl;
  17
  18 namespace Mono.Xml.Xsl.Operations {
  19         public class XslForEach : XslCompiledElement {
  20                 XPathExpression select;
  21                 XslOperation children;
  22
  23                 public XslForEach (Compiler c) : base (c) {}
  24
  25                 protected override void Compile (Compiler c)
  26                 {
  27                         c.AssertAttribute ("select");
  28                         select = c.CompileExpression (c.GetAttribute ("select"));
  29
  30                         if (c.Input.MoveToFirstChild ()) {
  31                                 bool alldone = true;
  32                                 do {
  33                                         if (c.Input.NodeType == XPathNodeType.Text)
  34                                                 { alldone = false; break; }
  35
  36                                         if (c.Input.NodeType != XPathNodeType.Element)
  37                                                 continue;
  38                                         if (c.Input.NamespaceURI != Compiler.XsltNamespace)
  39                                                 { alldone = false; break; }
  40                                         if (c.Input.LocalName != "sort")
  41                                                 { alldone = false; break; }
  42
  43                                         c.AddSort (select, new Sort (c));
  44
  45                                 } while (c.Input.MoveToNext ());
  46                                 if (!alldone)
  47                                         children = c.CompileTemplateContent ();
  48                                 c.Input.MoveToParent ();
  49                         }
  50                 }
  51
  52                 public override void Evaluate (XslTransformProcessor p)
  53                 {
  54                         p.PushNodeset (p.Select (select));
  55                         p.PushForEachContext ();
  56
  57                         while (p.NodesetMoveNext ())
  58                                 children.Evaluate (p);
  59                         p.PopForEachContext();
  60                         p.PopNodeset ();
  61                 }
  62         }
  63 }