InversionOfControl/Castle.Windsor/Configuration/Interpreters/XmlProcessor/ElementProcessors/AbstractStatementElementProcessor.cs

   1 // Copyright 2004-2008 Castle Project - http://www.castleproject.org/
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 //     http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15 namespace Castle.Windsor.Configuration.Interpreters.XmlProcessor.ElementProcessors
  16 {
  17         using System;
  18         using System.Xml;
  19
  20         public abstract class AbstractStatementElementProcessor : AbstractXmlNodeProcessor
  21         {
  22                 private static readonly String DefinedAttrName = "defined";
  23                 private static readonly String NotDefinedAttrName = "not-defined";
  24
  25                 public AbstractStatementElementProcessor()
  26                 {
  27                 }
  28
  29                 protected bool ProcessStatement(XmlElement element, IXmlProcessorEngine engine)
  30                 {
  31                         if (!element.HasAttribute(DefinedAttrName) &&
  32                                 !element.HasAttribute(NotDefinedAttrName))
  33                         {
  34                                 throw new XmlProcessorException("'if' elements expects a non empty defined or not-defined attribute");
  35                         }
  36
  37                         if (element.HasAttribute(DefinedAttrName) &&
  38                                 element.HasAttribute(NotDefinedAttrName))
  39                         {
  40                                 throw new XmlProcessorException("'if' elements expects a non empty defined or not-defined attribute");
  41                         }
  42
  43                         bool processContents = false;
  44
  45                         if (element.HasAttribute(DefinedAttrName))
  46                         {
  47                                 processContents = engine.HasFlag(element.GetAttribute(DefinedAttrName));
  48                         }
  49                         else
  50                         {
  51                                 processContents = !engine.HasFlag(element.GetAttribute(NotDefinedAttrName));
  52                         }
  53
  54                         return processContents;
  55                 }
  56         }
  57 }