java/java-impl/src/com/intellij/codeInsight/editorActions/smartEnter/MissingCatchBodyFixer.java


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/*
 * 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.codeInsight.editorActions.smartEnter;

import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.psi.*;
import com.intellij.util.IncorrectOperationException;

/**
 * Created by IntelliJ IDEA.
 * User: max
 * Date: Sep 5, 2003
 * Time: 7:24:03 PM
 * To change this template use Options | File Templates.
 */
public class MissingCatchBodyFixer implements Fixer {
  @Override
  public void apply(Editor editor, JavaSmartEnterProcessor processor, PsiElement psiElement) throws IncorrectOperationException {
    if (!(psiElement instanceof PsiCatchSection)) return;
    PsiCatchSection catchSection = (PsiCatchSection) psiElement;

    final Document doc = editor.getDocument();

    PsiCodeBlock body = catchSection.getCatchBlock();
    if (body != null && startLine(doc, body) == startLine(doc, catchSection)) return;

    final PsiJavaToken rParenth = catchSection.getRParenth();
    if (rParenth == null) return;

    doc.insertString(rParenth.getTextRange().getEndOffset(), "{}");
  }

  private static int startLine(Document doc, PsiElement psiElement) {
    return doc.getLineNumber(psiElement.getTextRange().getStartOffset());
  }
}