java/java-impl/src/com/intellij/codeInsight/editorActions/smartEnter/MethodCallFixer.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.codeInsight.editorActions.smartEnter;
  17
  18 import com.intellij.openapi.editor.Editor;
  19 import com.intellij.psi.*;
  20 import com.intellij.psi.impl.source.jsp.jspJava.JspMethodCall;
  21 import com.intellij.util.IncorrectOperationException;
  22 import com.intellij.util.text.CharArrayUtil;
  23
  24 /**
  25  * Created by IntelliJ IDEA.
  26  * User: max
  27  * Date: Sep 5, 2003
  28  * Time: 3:35:49 PM
  29  * To change this template use Options | File Templates.
  30  */
  31 public class MethodCallFixer implements Fixer {
  32   public void apply(Editor editor, JavaSmartEnterProcessor processor, PsiElement psiElement) throws IncorrectOperationException {
  33     PsiExpressionList args = null;
  34     if (psiElement instanceof PsiMethodCallExpression && !(psiElement instanceof JspMethodCall)) {
  35       args = ((PsiMethodCallExpression) psiElement).getArgumentList();
  36     } else if (psiElement instanceof PsiNewExpression) {
  37       args = ((PsiNewExpression) psiElement).getArgumentList();
  38     }
  39
  40     if (args == null) return;
  41
  42     PsiElement parenth = args.getLastChild();
  43
  44     if (parenth == null || !")".equals(parenth.getText())) {
  45       int endOffset = -1;
  46       PsiElement child = args.getFirstChild();
  47       while (child != null) {
  48         if (child instanceof PsiErrorElement) {
  49           final PsiErrorElement errorElement = (PsiErrorElement)child;
  50           if (errorElement.getErrorDescription().indexOf("')'") >= 0) {
  51             endOffset = errorElement.getTextRange().getStartOffset();
  52             break;
  53           }
  54         }
  55         child = child.getNextSibling();
  56       }
  57
  58       if (endOffset == -1) {
  59         endOffset = args.getTextRange().getEndOffset();
  60       }
  61
  62       final PsiExpression[] params = args.getExpressions();
  63       if (params.length > 0 && startLine(editor, args) != startLine(editor, params[0])) {
  64         endOffset = args.getTextRange().getStartOffset() + 1;
  65       }
  66
  67       endOffset = CharArrayUtil.shiftBackward(editor.getDocument().getCharsSequence(), endOffset - 1, " \t\n") + 1;
  68       editor.getDocument().insertString(endOffset, ")");
  69     }
  70   }
  71
  72   private int startLine(Editor editor, PsiElement psiElement) {
  73     return editor.getDocument().getLineNumber(psiElement.getTextRange().getStartOffset());
  74   }
  75 }