AspectSharp/AspectSharp.Lang/Steps/Semantic/SemanticAnalizerBase.cs

   1 // Copyright 2004-2007 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 AspectSharp.Lang.Steps.Semantic
  16 {
  17         using System;
  18         using System.Collections;
  19
  20         using AspectSharp.Lang.AST;
  21
  22         /// <summary>
  23         /// Summary description for SemanticAnalizerBase.
  24         /// TODO: Rewrite using the DepthFirstVisitor
  25         /// </summary>
  26         public abstract class SemanticAnalizerBase : AbstractStep
  27         {
  28                 protected void AssertUnique(IDictionary values, NodeBase node, object value, String message)
  29                 {
  30                         if (values.Contains(value))
  31                         {
  32                                 RaiseErrorEvent( node.LexicalInfo, message );
  33                         }
  34                         else
  35                         {
  36                                 values.Add(value, String.Empty);
  37                         }
  38                 }
  39
  40                 protected void AssertEntriesAreValid(IDictionary types)
  41                 {
  42                         foreach(DictionaryEntry entry in types)
  43                         {
  44                                 DefinitionBase type = entry.Value as DefinitionBase;
  45                                 AssertNotEmpty( type, entry.Key as String, "A key must be specified to identify the type in the map" );
  46                         }
  47                 }
  48
  49                 protected void AssertNotNull( NodeBase node, object value, String message )
  50                 {
  51                         if (value == null)
  52                         {
  53                                 RaiseErrorEvent( node.LexicalInfo, message );
  54                         }
  55                 }
  56
  57                 protected void AssertNotEmpty( NodeBase node, String value, String message )
  58                 {
  59                         AssertNotNull(node, value, message);
  60                         if (String.Empty.Equals(value))
  61                         {
  62                                 RaiseErrorEvent( node.LexicalInfo, message );
  63                         }
  64                 }
  65
  66                 protected void AssertKeyExists( IDictionary names, NodeBase node, object key, String message )
  67                 {
  68                         if (!names.Contains(key))
  69                         {
  70                                 RaiseErrorEvent( node.LexicalInfo, message );
  71                         }
  72                 }
  73         }
  74 }