| |
| /* |
| * 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.intellij.codeInsight.generation.surroundWith; |
| |
| import com.intellij.codeInsight.CodeInsightUtilCore; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.TextRange; |
| import com.intellij.psi.*; |
| import com.intellij.psi.codeStyle.CodeStyleManager; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.util.IncorrectOperationException; |
| import com.intellij.psi.util.FileTypeUtils; |
| import org.jetbrains.annotations.NonNls; |
| |
| class JavaWithNullCheckSurrounder extends JavaExpressionSurrounder{ |
| @Override |
| public boolean isApplicable(PsiExpression expr) { |
| PsiType type = expr.getType(); |
| if (type instanceof PsiPrimitiveType) return false; |
| if (!expr.isPhysical()) return false; |
| if (expr.getParent() instanceof PsiExpressionStatement) return false; |
| PsiElement parent = PsiTreeUtil.getParentOfType(expr, PsiExpressionStatement.class); |
| if (parent == null) return false; |
| final PsiElement element = parent.getParent(); |
| if (!(element instanceof PsiCodeBlock) && !(FileTypeUtils.isInServerPageFile(element) && element instanceof PsiFile)) return false; |
| return true; |
| } |
| |
| @Override |
| public TextRange surroundExpression(Project project, Editor editor, PsiExpression expr) throws IncorrectOperationException { |
| PsiManager manager = expr.getManager(); |
| PsiElementFactory factory = JavaPsiFacade.getInstance(manager.getProject()).getElementFactory(); |
| CodeStyleManager codeStyleManager = CodeStyleManager.getInstance(project); |
| |
| @NonNls String text = "if(a != null){\nst;\n}"; |
| PsiIfStatement ifStatement = (PsiIfStatement)factory.createStatementFromText(text, null); |
| ifStatement = (PsiIfStatement)codeStyleManager.reformat(ifStatement); |
| |
| ((PsiBinaryExpression)ifStatement.getCondition()).getLOperand().replace(expr); |
| |
| PsiExpressionStatement statement = PsiTreeUtil.getParentOfType(expr, PsiExpressionStatement.class); |
| String oldText = statement.getText(); |
| ifStatement = (PsiIfStatement)statement.replace(ifStatement); |
| PsiCodeBlock block = ((PsiBlockStatement)ifStatement.getThenBranch()).getCodeBlock(); |
| block = CodeInsightUtilCore.forcePsiPostprocessAndRestoreElement(block); |
| PsiElement replace = block.getStatements()[0].replace(factory.createStatementFromText(oldText, block)); |
| int offset = replace.getTextRange().getEndOffset(); |
| return new TextRange(offset, offset); |
| } |
| |
| @Override |
| public String getTemplateDescription() { |
| return "if (expr != null) {...}"; |
| } |
| } |