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/*
* Copyright 2000-2013 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.psi.impl.search;
import com.intellij.lexer.LexerBase;
import com.intellij.openapi.editor.highlighter.EditorHighlighter;
import com.intellij.openapi.editor.highlighter.HighlighterIterator;
import com.intellij.psi.tree.IElementType;
import com.intellij.util.text.CharSequenceSubSequence;
import org.jetbrains.annotations.NotNull;
/**
* @author Sergey Evdokimov
*/
public class LexerEditorHighlighterLexer extends LexerBase {
private HighlighterIterator iterator;
private CharSequence buffer;
private int start;
private int end;
private final EditorHighlighter myHighlighter;
private final boolean myAlreadyInitializedHighlighter;
public LexerEditorHighlighterLexer(final EditorHighlighter highlighter, boolean alreadyInitializedHighlighter) {
myHighlighter = highlighter;
myAlreadyInitializedHighlighter = alreadyInitializedHighlighter;
}
@Override
public void start(@NotNull CharSequence buffer, int startOffset, int endOffset, int state) {
if (myAlreadyInitializedHighlighter) {
this.buffer = buffer;
start = startOffset;
end = endOffset;
} else {
myHighlighter.setText(new CharSequenceSubSequence(this.buffer = buffer, start = startOffset, end = endOffset));
}
iterator = myHighlighter.createIterator(0);
}
public void resetPosition(int offset) {
iterator = myHighlighter.createIterator(offset);
}
@Override
public int getState() {
return 0;
}
@Override
public IElementType getTokenType() {
if (iterator.atEnd()) return null;
return iterator.getTokenType();
}
@Override
public int getTokenStart() {
return iterator.getStart();
}
@Override
public int getTokenEnd() {
return iterator.getEnd();
}
@Override
public void advance() {
iterator.advance();
}
@NotNull
@Override
public CharSequence getBufferSequence() {
return buffer;
}
@Override
public int getBufferEnd() {
return end;
}
public HighlighterIterator getHighlighterIterator() {
return iterator;
}
}
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