Introduced DummyLexer

platform/platform-api/src/com/intellij/lexer/DummyLexer.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright 2000-2009 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.lexer;
+
+import com.intellij.psi.tree.IElementType;
+
+public class DummyLexer extends LexerBase {
+  private CharSequence myBuffer;
+  private int myStartOffset;
+  private int myEndOffset;
+  private final IElementType myTokenType;
+
+  public DummyLexer(IElementType type) {
+    myTokenType = type;
+  }
+
+  public void start(final CharSequence buffer, final int startOffset, final int endOffset, final int initialState) {
+    myBuffer = buffer;
+    myStartOffset = startOffset;
+    myEndOffset = endOffset;
+  }
+
+  public CharSequence getBufferSequence() {
+    return myBuffer;
+  }
+
+  public int getState() {
+    return 0;
+  }
+
+  public IElementType getTokenType() {
+    return (myStartOffset < myEndOffset ? myTokenType : null);
+  }
+
+  public int getTokenStart() {
+    return myStartOffset;
+  }
+
+  public int getTokenEnd() {
+    return myEndOffset;
+  }
+
+  public void advance() {
+    myStartOffset = myEndOffset;
+  }
+
+  public LexerPosition getCurrentPosition() {
+    return new LexerPositionImpl(0, getState());
+  }
+
+  public void restore(LexerPosition position) {
+  }
+
+  public int getBufferEnd() {
+    return myEndOffset;
+  }
+}

platform/platform-api/src/com/intellij/lexer/EmptyLexer.java

@@ -18,51 +18,10 @@ package com.intellij.lexer;
 import com.intellij.lang.Language;
 import com.intellij.psi.tree.IElementType;
 
-public class EmptyLexer extends LexerBase {
-  private CharSequence myBuffer;
-  private int myStartOffset;
-  private int myEndOffset;
-
+public class EmptyLexer extends DummyLexer {
   private static final IElementType EMPTY_TOKEN_TYPE = new IElementType("empty token", Language.ANY);
 
-  public void start(final CharSequence buffer, final int startOffset, final int endOffset, final int initialState) {
-    myBuffer = buffer;
-    myStartOffset = startOffset;
-    myEndOffset = endOffset;
+  public EmptyLexer() {
+    super(EMPTY_TOKEN_TYPE);
   }
-
-  public CharSequence getBufferSequence() {
-    return myBuffer;
-  }
-
-  public int getState() {
-    return 0;
-  }
-
-  public IElementType getTokenType() {
-    return (myStartOffset < myEndOffset ? EMPTY_TOKEN_TYPE : null);
-  }
-
-  public int getTokenStart() {
-    return myStartOffset;
-  }
-
-  public int getTokenEnd() {
-    return myEndOffset;
-  }
-
-  public void advance() {
-    myStartOffset = myEndOffset;
-  }
-
-  public LexerPosition getCurrentPosition() {
-    return new LexerPositionImpl(0, getState());
-  }
-
-  public void restore(LexerPosition position) {}
-
-  public int getBufferEnd() {
-    return myEndOffset;
-  }
-
 }

plugins/properties/src/com/intellij/lang/properties/editor/PropertiesValueHighlightingLexer.java

@@ -20,18 +20,14 @@
 package com.intellij.lang.properties.editor;
 
 import com.intellij.lang.properties.parsing.PropertiesTokenTypes;
-import com.intellij.lexer.EmptyLexer;
+import com.intellij.lexer.DummyLexer;
 import com.intellij.lexer.LayeredLexer;
 import com.intellij.lexer.StringLiteralLexer;
 import com.intellij.psi.tree.IElementType;
 
 public class PropertiesValueHighlightingLexer extends LayeredLexer {
   public PropertiesValueHighlightingLexer() {
-      super(new EmptyLexer(){
-        public IElementType getTokenType() {
-          return getTokenStart() < getTokenEnd() ? PropertiesTokenTypes.VALUE_CHARACTERS : null;
-        }
-      });
+      super(new DummyLexer(PropertiesTokenTypes.VALUE_CHARACTERS));
 
       registerSelfStoppingLayer(new StringLiteralLexer(StringLiteralLexer.NO_QUOTE_CHAR, PropertiesTokenTypes.VALUE_CHARACTERS, true, "#!=:"),
                                 new IElementType[]{PropertiesTokenTypes.VALUE_CHARACTERS}, IElementType.EMPTY_ARRAY);