| /* |
| * Copyright 2007-2008 Dave Griffith |
| * |
| * 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 org.jetbrains.plugins.groovy.codeInspection.metrics; |
| |
| import com.intellij.psi.PsiElement; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.plugins.groovy.lang.psi.GroovyRecursiveElementVisitor; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.*; |
| |
| class NestingDepthVisitor extends GroovyRecursiveElementVisitor { |
| |
| private int m_maximumDepth = 0; |
| private int m_currentDepth = 0; |
| |
| @Override |
| public void visitBlockStatement(GrBlockStatement statement) { |
| final PsiElement parent = statement.getParent(); |
| final boolean isAlreadyCounted = |
| parent instanceof GrWhileStatement || |
| parent instanceof GrForStatement || |
| parent instanceof GrIfStatement; |
| if (!isAlreadyCounted) { |
| enterScope(); |
| } |
| super.visitBlockStatement(statement); |
| if (!isAlreadyCounted) { |
| exitScope(); |
| } |
| } |
| |
| |
| @Override |
| public void visitForStatement(@NotNull GrForStatement statement) { |
| enterScope(); |
| super.visitForStatement(statement); |
| exitScope(); |
| } |
| |
| @Override |
| public void visitIfStatement(@NotNull GrIfStatement statement) { |
| boolean isAlreadyCounted = false; |
| if (statement.getParent() instanceof GrIfStatement) { |
| final GrIfStatement parent = (GrIfStatement) statement.getParent(); |
| assert parent != null; |
| final GrStatement elseBranch = parent.getElseBranch(); |
| if (statement.equals(elseBranch)) { |
| isAlreadyCounted = true; |
| } |
| } |
| if (!isAlreadyCounted) { |
| enterScope(); |
| } |
| super.visitIfStatement(statement); |
| if (!isAlreadyCounted) { |
| exitScope(); |
| } |
| } |
| |
| @Override |
| public void visitTryStatement(@NotNull GrTryCatchStatement statement) { |
| enterScope(); |
| super.visitTryStatement(statement); |
| exitScope(); |
| } |
| |
| @Override |
| public void visitSwitchStatement(@NotNull GrSwitchStatement statement) { |
| enterScope(); |
| super.visitSwitchStatement(statement); |
| exitScope(); |
| } |
| |
| @Override |
| public void visitWhileStatement(@NotNull GrWhileStatement statement) { |
| enterScope(); |
| super.visitWhileStatement(statement); |
| exitScope(); |
| } |
| |
| private void enterScope() { |
| m_currentDepth++; |
| m_maximumDepth = Math.max(m_maximumDepth, m_currentDepth); |
| } |
| |
| private void exitScope() { |
| m_currentDepth--; |
| } |
| |
| public int getMaximumDepth() { |
| return m_maximumDepth; |
| } |
| } |