| /* |
| * 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.Editor; |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.util.IncorrectOperationException; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * Created by IntelliJ IDEA. |
| * User: max |
| * Date: Sep 8, 2003 |
| * Time: 4:20:36 PM |
| * To change this template use Options | File Templates. |
| */ |
| @SuppressWarnings({"HardCodedStringLiteral"}) |
| public class MissingReturnExpressionFixer implements Fixer { |
| @Override |
| public void apply(Editor editor, JavaSmartEnterProcessor processor, PsiElement psiElement) throws IncorrectOperationException { |
| if (!(psiElement instanceof PsiReturnStatement)) { |
| return; |
| } |
| if (!PsiTreeUtil.hasErrorElements(psiElement)) { |
| return; |
| } |
| |
| PsiReturnStatement retStatement = (PsiReturnStatement)psiElement; |
| if (fixMethodCallWithoutTrailingSemicolon(retStatement, editor, processor)) { |
| return; |
| } |
| |
| PsiExpression returnValue = retStatement.getReturnValue(); |
| if (returnValue != null |
| && lineNumber(editor, editor.getCaretModel().getOffset()) == lineNumber(editor, returnValue.getTextRange().getStartOffset())) |
| { |
| return; |
| } |
| |
| PsiElement parent = PsiTreeUtil.getParentOfType(psiElement, PsiClassInitializer.class, PsiMethod.class); |
| if (parent instanceof PsiMethod) { |
| final PsiType returnType = ((PsiMethod)parent).getReturnType(); |
| if (returnType != null && returnType != PsiType.VOID) { |
| final int startOffset = retStatement.getTextRange().getStartOffset(); |
| if (returnValue != null) { |
| editor.getDocument().insertString(startOffset + "return".length(), ";"); |
| } |
| |
| processor.registerUnresolvedError(startOffset + "return".length()); |
| } |
| } |
| } |
| |
| private static boolean fixMethodCallWithoutTrailingSemicolon(@Nullable PsiReturnStatement returnStatement, @NotNull Editor editor, |
| @NotNull JavaSmartEnterProcessor processor) |
| { |
| if (returnStatement == null) { |
| return false; |
| } |
| final PsiElement lastChild = returnStatement.getLastChild(); |
| if (!(lastChild instanceof PsiErrorElement)) { |
| return false; |
| } |
| PsiElement prev = lastChild.getPrevSibling(); |
| if (prev instanceof PsiWhiteSpace) { |
| prev = prev.getPrevSibling(); |
| } |
| |
| if (!(prev instanceof PsiJavaToken)) { |
| int offset = returnStatement.getTextRange().getEndOffset(); |
| final PsiMethod method = PsiTreeUtil.getParentOfType(returnStatement, PsiMethod.class); |
| if (method != null && method.getReturnType() == PsiType.VOID) { |
| offset = returnStatement.getTextRange().getStartOffset() + "return".length(); |
| } |
| editor.getDocument().insertString(offset, ";"); |
| //processor.setSkipEnter(true); |
| return true; |
| } |
| |
| PsiJavaToken prevToken = (PsiJavaToken)prev; |
| if (prevToken.getTokenType() == JavaTokenType.SEMICOLON) { |
| return false; |
| } |
| |
| final int offset = returnStatement.getTextRange().getEndOffset(); |
| editor.getDocument().insertString(offset, ";"); |
| if (prevToken.getTokenType() == JavaTokenType.RETURN_KEYWORD) { |
| final PsiMethod method = PsiTreeUtil.getParentOfType(returnStatement, PsiMethod.class); |
| if (method != null && method.getReturnType() != PsiType.VOID) { |
| editor.getCaretModel().moveToOffset(offset); |
| processor.setSkipEnter(true); |
| } |
| } |
| return true; |
| } |
| |
| private static int lineNumber(Editor editor, int offset) { |
| return editor.getDocument().getLineNumber(offset); |
| } |
| } |