| /* |
| * 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; |
| import com.intellij.psi.tree.TokenSet; |
| |
| public class MergingLexerAdapter extends MergingLexerAdapterBase { |
| private final TokenSet myTokenSet; |
| private final MergeFunction myMergeFunction = new MyMergeFunction(); |
| |
| public MergingLexerAdapter(final Lexer original, final TokenSet tokensToMerge){ |
| super(original); |
| myTokenSet = tokensToMerge; |
| } |
| |
| @Override |
| public MergeFunction getMergeFunction() { |
| return myMergeFunction; |
| } |
| |
| private class MyMergeFunction implements MergeFunction { |
| @Override |
| public IElementType merge(final IElementType type, final Lexer originalLexer) { |
| if (!myTokenSet.contains(type)) { |
| return type; |
| } |
| |
| while (true) { |
| final IElementType tokenType = originalLexer.getTokenType(); |
| if (tokenType != type) break; |
| originalLexer.advance(); |
| } |
| return type; |
| } |
| } |
| } |