java/java-impl/src/com/intellij/psi/impl/source/resolve/reference/impl/manipulators/StringLiteralManipulator.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.psi.impl.source.resolve.reference.impl.manipulators;
  17
  18 import com.intellij.openapi.util.TextRange;
  19 import com.intellij.openapi.util.text.StringUtil;
  20 import com.intellij.psi.AbstractElementManipulator;
  21 import com.intellij.psi.JavaPsiFacade;
  22 import com.intellij.psi.PsiExpression;
  23 import com.intellij.psi.PsiLiteralExpression;
  24 import com.intellij.util.IncorrectOperationException;
  25
  26 /**
  27  * @author ven
  28  */
  29 public class StringLiteralManipulator extends AbstractElementManipulator<PsiLiteralExpression> {
  30   public PsiLiteralExpression handleContentChange(PsiLiteralExpression expr, TextRange range, String newContent) throws IncorrectOperationException {
  31     if (!(expr.getValue() instanceof String)) throw new IncorrectOperationException("cannot handle content change");
  32     String oldText = expr.getText();
  33     newContent = StringUtil.escapeStringCharacters(newContent);
  34     String newText = oldText.substring(0, range.getStartOffset()) + newContent + oldText.substring(range.getEndOffset());
  35     final PsiExpression newExpr = JavaPsiFacade.getInstance(expr.getProject()).getElementFactory().createExpressionFromText(newText, null);
  36     return (PsiLiteralExpression)expr.replace(newExpr);
  37   }
  38
  39   public TextRange getRangeInElement(final PsiLiteralExpression element) {
  40     return getValueRange(element);
  41   }
  42
  43   public static TextRange getValueRange(PsiLiteralExpression element) {
  44     if (!(element.getValue() instanceof String)) return TextRange.from(0, element.getTextLength());
  45     return new TextRange(1, Math.max(1, element.getTextLength() - 1));
  46   }
  47 }