Java tutorial
/* * SonarQube Java * Copyright (C) 2012-2016 SonarSource SA * mailto:contact AT sonarsource DOT com * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 3 of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ package org.sonar.java.checks; import com.google.common.collect.ImmutableList; import org.apache.commons.lang.BooleanUtils; import org.sonar.api.server.rule.RulesDefinition; import org.sonar.check.Priority; import org.sonar.check.Rule; import org.sonar.check.RuleProperty; import org.sonar.java.model.declaration.MethodTreeImpl; import org.sonar.java.tag.Tag; import org.sonar.plugins.java.api.JavaFileScannerContext; import org.sonar.plugins.java.api.tree.MethodTree; import org.sonar.plugins.java.api.tree.Tree; import org.sonar.squidbridge.annotations.ActivatedByDefault; import org.sonar.squidbridge.annotations.SqaleConstantRemediation; import org.sonar.squidbridge.annotations.SqaleSubCharacteristic; import java.util.List; import java.util.regex.Pattern; @Rule(key = "S00100", name = "Method names should comply with a naming convention", priority = Priority.MINOR, tags = { Tag.CONVENTION }) @ActivatedByDefault @SqaleSubCharacteristic(RulesDefinition.SubCharacteristics.READABILITY) @SqaleConstantRemediation("5min") public class BadMethodName_S00100_Check extends SubscriptionBaseVisitor { private static final String DEFAULT_FORMAT = "^[a-z][a-zA-Z0-9]*$"; @RuleProperty(key = "format", description = "Regular expression used to check the method names against.", defaultValue = "" + DEFAULT_FORMAT) public String format = DEFAULT_FORMAT; private Pattern pattern = null; @Override public List<Tree.Kind> nodesToVisit() { return ImmutableList.of(Tree.Kind.METHOD); } @Override public void scanFile(JavaFileScannerContext context) { if (pattern == null) { pattern = Pattern.compile(format, Pattern.DOTALL); } super.scanFile(context); } @Override public void visitNode(Tree tree) { MethodTree methodTree = (MethodTree) tree; if (isNotOverriden(methodTree) && !pattern.matcher(methodTree.simpleName().name()).matches()) { addIssue(tree, "Rename this method name to match the regular expression '" + format + "'."); } } private static boolean isNotOverriden(MethodTree methodTree) { return BooleanUtils.isFalse(((MethodTreeImpl) methodTree).isOverriding()); } }