| /* |
| * Copyright 2003-2012 Dave Griffith, Bas Leijdekkers |
| * |
| * 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.siyeh.ipp.concatenation; |
| |
| import com.intellij.openapi.util.text.StringUtil; |
| import com.intellij.psi.*; |
| import com.intellij.util.IncorrectOperationException; |
| import com.siyeh.ig.PsiReplacementUtil; |
| import com.siyeh.ipp.base.Intention; |
| import com.siyeh.ipp.base.PsiElementPredicate; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public class JoinConcatenatedStringLiteralsIntention extends Intention { |
| |
| @Override |
| @NotNull |
| protected PsiElementPredicate getElementPredicate() { |
| return new StringConcatPredicate(); |
| } |
| |
| @Override |
| public void processIntention(PsiElement element) throws IncorrectOperationException { |
| if (element instanceof PsiWhiteSpace) { |
| element = element.getPrevSibling(); |
| } |
| if (!(element instanceof PsiJavaToken)) { |
| return; |
| } |
| final PsiJavaToken token = (PsiJavaToken)element; |
| final PsiPolyadicExpression polyadicExpression = (PsiPolyadicExpression)element.getParent(); |
| StringBuilder newExpression = new StringBuilder(); |
| final PsiElement[] children = polyadicExpression.getChildren(); |
| final List<PsiElement> buffer = new ArrayList(3); |
| for (PsiElement child : children) { |
| if (child instanceof PsiJavaToken) { |
| if (token.equals(child)) { |
| final PsiLiteralExpression literalExpression = (PsiLiteralExpression)buffer.get(0); |
| final Object value = literalExpression.getValue(); |
| assert value != null; |
| newExpression.append('"').append(StringUtil.escapeStringCharacters(value.toString())); |
| } |
| else { |
| for (PsiElement bufferedElement : buffer) { |
| newExpression.append(bufferedElement.getText()); |
| } |
| buffer.clear(); |
| newExpression.append(child.getText()); |
| } |
| } |
| else if (child instanceof PsiLiteralExpression) { |
| if (buffer.isEmpty()) { |
| buffer.add(child); |
| } |
| else { |
| final PsiLiteralExpression literalExpression = (PsiLiteralExpression)child; |
| final Object value = literalExpression.getValue(); |
| assert value != null; |
| newExpression.append(StringUtil.escapeStringCharacters(value.toString())).append('"'); |
| buffer.clear(); |
| } |
| } |
| else { |
| if (buffer.isEmpty()) { |
| newExpression.append(child.getText()); |
| } |
| else { |
| buffer.add(child); |
| } |
| } |
| } |
| for (PsiElement bufferedElement : buffer) { |
| newExpression.append(bufferedElement.getText()); |
| } |
| PsiReplacementUtil.replaceExpression(polyadicExpression, newExpression.toString()); |
| } |
| } |