| /* |
| * Copyright 2000-2012 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.siyeh.ipp.exceptions; |
| |
| import com.intellij.psi.*; |
| import com.intellij.psi.tree.IElementType; |
| import com.siyeh.ipp.base.PsiElementPredicate; |
| |
| /** |
| * @author Bas Leijdekkers |
| */ |
| class NestedTryStatementsPredicate implements PsiElementPredicate { |
| |
| @Override |
| public boolean satisfiedBy(PsiElement element) { |
| if (!(element instanceof PsiJavaToken)) { |
| return false; |
| } |
| final PsiJavaToken javaToken = (PsiJavaToken)element; |
| final IElementType tokenType = javaToken.getTokenType(); |
| if (!JavaTokenType.TRY_KEYWORD.equals(tokenType)) { |
| return false; |
| } |
| final PsiElement parent = element.getParent(); |
| if (!isSimpleTry(parent)) { |
| return false; |
| } |
| final PsiTryStatement tryStatement = (PsiTryStatement)parent; |
| final PsiCodeBlock block = tryStatement.getTryBlock(); |
| if (block == null) { |
| return false; |
| } |
| final PsiStatement[] statements = block.getStatements(); |
| if (statements.length != 1) { |
| return false; |
| } |
| final PsiStatement statement = statements[0]; |
| return isSimpleTry(statement); |
| } |
| |
| private static boolean isSimpleTry(PsiElement element) { |
| if (!(element instanceof PsiTryStatement)) { |
| return false; |
| } |
| final PsiTryStatement tryStatement = (PsiTryStatement)element; |
| final PsiCodeBlock finallyBlock = tryStatement.getFinallyBlock(); |
| if (finallyBlock != null) { |
| return false; |
| } |
| final PsiCodeBlock block = tryStatement.getTryBlock(); |
| return block != null; |
| } |
| } |