xml/impl/src/com/intellij/lexer/DtdHighlightingLexer.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.lexer;
  17
  18 import com.intellij.psi.tree.IElementType;
  19 import com.intellij.psi.xml.XmlTokenType;
  20
  21 /**
  22  * @author mike
  23  */
  24 public class DtdHighlightingLexer extends DelegateLexer {
  25   public DtdHighlightingLexer() {
  26     super(new OldXmlLexer());
  27   }
  28
  29   public IElementType getTokenType() {
  30     IElementType tokenType = super.getTokenType();
  31
  32     if (tokenType == null) return tokenType;
  33
  34     if (tokenType != XmlTokenType.XML_COMMENT_CHARACTERS &&
  35       tokenType != XmlTokenType.XML_COMMENT_END &&
  36       tokenType != XmlTokenType.XML_COMMENT_START &&
  37       tokenType != XmlTokenType.XML_ATTRIBUTE_VALUE_START_DELIMITER) {
  38
  39       // TODO: do not know when this happens!
  40       switch (getState()) {
  41         case __XmlLexer.DOCTYPE:
  42           tokenType = XmlTokenType.XML_DECL_START;
  43           break;
  44       }
  45     }
  46
  47     return tokenType;
  48   }
  49 }