001/* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2008-2012 SonarSource 004 * mailto:contact AT sonarsource DOT com 005 * 006 * Sonar is free software; you can redistribute it and/or 007 * modify it under the terms of the GNU Lesser General Public 008 * License as published by the Free Software Foundation; either 009 * version 3 of the License, or (at your option) any later version. 010 * 011 * Sonar is distributed in the hope that it will be useful, 012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 * Lesser General Public License for more details. 015 * 016 * You should have received a copy of the GNU Lesser General Public 017 * License along with Sonar; if not, write to the Free Software 018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02 019 */ 020package org.sonar.api.rules; 021 022import com.google.common.annotations.VisibleForTesting; 023import com.google.common.base.Function; 024import com.google.common.base.Functions; 025import com.google.common.collect.ImmutableMap; 026import com.google.common.collect.Lists; 027import org.apache.commons.lang.StringUtils; 028import org.slf4j.Logger; 029import org.slf4j.LoggerFactory; 030import org.sonar.api.PropertyType; 031import org.sonar.api.ServerComponent; 032import org.sonar.api.utils.AnnotationUtils; 033import org.sonar.api.utils.FieldUtils2; 034import org.sonar.api.utils.SonarException; 035 036import java.lang.reflect.Field; 037import java.util.Collection; 038import java.util.List; 039 040/** 041 * @since 2.3 042 */ 043public final class AnnotationRuleParser implements ServerComponent { 044 045 private static final Logger LOG = LoggerFactory.getLogger(AnnotationRuleParser.class); 046 047 public List<Rule> parse(String repositoryKey, Collection<Class> annotatedClasses) { 048 List<Rule> rules = Lists.newArrayList(); 049 for (Class annotatedClass : annotatedClasses) { 050 rules.add(create(repositoryKey, annotatedClass)); 051 } 052 return rules; 053 } 054 055 private Rule create(String repositoryKey, Class annotatedClass) { 056 org.sonar.check.Rule ruleAnnotation = AnnotationUtils.getAnnotation(annotatedClass, org.sonar.check.Rule.class); 057 if (ruleAnnotation != null) { 058 return toRule(repositoryKey, annotatedClass, ruleAnnotation); 059 } 060 LOG.warn("The class " + annotatedClass.getCanonicalName() + " should be annotated with " + Rule.class); 061 return null; 062 } 063 064 private Rule toRule(String repositoryKey, Class clazz, org.sonar.check.Rule ruleAnnotation) { 065 String ruleKey = StringUtils.defaultIfEmpty(ruleAnnotation.key(), clazz.getCanonicalName()); 066 String ruleName = StringUtils.defaultIfEmpty(ruleAnnotation.name(), null); 067 String description = StringUtils.defaultIfEmpty(ruleAnnotation.description(), null); 068 Rule rule = Rule.create(repositoryKey, ruleKey, ruleName); 069 rule.setDescription(description); 070 rule.setSeverity(RulePriority.fromCheckPriority(ruleAnnotation.priority())); 071 rule.setCardinality(ruleAnnotation.cardinality()); 072 073 List<Field> fields = FieldUtils2.getFields(clazz, true); 074 for (Field field : fields) { 075 addRuleProperty(rule, field); 076 } 077 return rule; 078 } 079 080 private void addRuleProperty(Rule rule, Field field) { 081 org.sonar.check.RuleProperty propertyAnnotation = field.getAnnotation(org.sonar.check.RuleProperty.class); 082 if (propertyAnnotation != null) { 083 String fieldKey = StringUtils.defaultIfEmpty(propertyAnnotation.key(), field.getName()); 084 RuleParam param = rule.createParameter(fieldKey); 085 param.setDescription(propertyAnnotation.description()); 086 param.setDefaultValue(propertyAnnotation.defaultValue()); 087 if (!StringUtils.isBlank(propertyAnnotation.type())) { 088 try { 089 param.setType(PropertyType.valueOf(propertyAnnotation.type().trim()).name()); 090 } catch (IllegalArgumentException e) { 091 throw new SonarException("Invalid property type [" + propertyAnnotation.type() + "]", e); 092 } 093 } else { 094 param.setType(guessType(field.getType()).name()); 095 } 096 } 097 } 098 099 private static final Function<Class<?>, PropertyType> TYPE_FOR_CLASS = Functions.forMap( 100 ImmutableMap.<Class<?>, PropertyType> builder() 101 .put(Integer.class, PropertyType.INTEGER) 102 .put(int.class, PropertyType.INTEGER) 103 .put(Float.class, PropertyType.FLOAT) 104 .put(float.class, PropertyType.FLOAT) 105 .put(Boolean.class, PropertyType.BOOLEAN) 106 .put(boolean.class, PropertyType.BOOLEAN) 107 .build(), 108 PropertyType.STRING); 109 110 @VisibleForTesting 111 static PropertyType guessType(Class<?> type) { 112 return TYPE_FOR_CLASS.apply(type); 113 } 114}