mcs/class/System.XML/Mono.Xml.Xsl/XslAttributeSet.cs

   1 //
   2 // XslAttributeSet.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.CodeDom;
  14 using System.Collections;
  15 using System.Collections.Specialized;
  16 using System.Xml;
  17 using System.Xml.Schema;
  18 using System.Xml.XPath;
  19 using System.Xml.Xsl;
  20 using Mono.Xml.Xsl.Operations;
  21
  22 using QName = System.Xml.XmlQualifiedName;
  23
  24 namespace Mono.Xml.Xsl {
  25         public class XslAttributeSet : XslCompiledElement {
  26                 QName name;
  27                 // [QName]=>XslAttributeSet
  28                 ArrayList usedAttributeSets = new ArrayList ();
  29
  30                 // [QName]=>XslAttribute
  31                 ArrayList attributes = new ArrayList ();
  32
  33                 public XslAttributeSet (Compiler c) : base (c) {}
  34
  35                 public QName Name {
  36                         get { return name; }
  37                 }
  38
  39                 protected override void Compile (Compiler c)
  40                 {
  41                         this.name = c.ParseQNameAttribute ("name");
  42
  43                         QName [] attrSets = c.ParseQNameListAttribute ("use-attribute-sets");
  44                         if (attrSets != null)
  45                                 foreach (QName q in c.ParseQNameListAttribute ("use-attribute-sets"))
  46                                         usedAttributeSets.Add (q);
  47
  48
  49                         if (!c.Input.MoveToFirstChild ()) return;
  50
  51                         do {
  52                                 if (c.Input.NodeType != XPathNodeType.Element) continue;
  53
  54                                 if (c.Input.NamespaceURI != XsltNamespace || c.Input.LocalName != "attribute")
  55                                         throw new Exception ("Invalid attr set content");
  56                                 attributes.Add (new XslAttribute (c));
  57                         } while (c.Input.MoveToNext ());
  58
  59                         c.Input.MoveToParent ();
  60
  61                 }
  62
  63                 public void Merge (XslAttributeSet s)
  64                 {
  65                         attributes.AddRange (s.attributes);
  66
  67                         foreach (QName q in s.usedAttributeSets)
  68                                 if (!usedAttributeSets.Contains (q))
  69                                         usedAttributeSets.Add (q);
  70                 }
  71
  72                 public override void Evaluate (XslTransformProcessor p) {
  73                         p.SetBusy (this);
  74
  75                         if (usedAttributeSets != null) {
  76                                 foreach (QName set in usedAttributeSets)
  77                                 {
  78                                         XslAttributeSet s = p.ResolveAttributeSet (set);
  79                                         if (s == null)
  80                                                 throw new Exception ("Could not resolve attribute set");
  81
  82                                         if (p.IsBusy (s))
  83                                                 throw new Exception ("circular dependency");
  84
  85                                         s.Evaluate (p);
  86                                 }
  87                         }
  88
  89                         foreach (Operations.XslAttribute a in attributes)
  90                                 a.Evaluate (p);
  91
  92                         p.SetFree (this);
  93                 }
  94         }
  95 }