| package org.apache.commons.digester3.annotations.processor; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| import static com.sun.codemodel.JMod.FINAL; |
| import static com.sun.codemodel.JMod.PROTECTED; |
| import static com.sun.codemodel.JMod.PUBLIC; |
| import static com.sun.codemodel.JType.parse; |
| import static java.lang.String.format; |
| import static java.util.Arrays.asList; |
| |
| import java.io.IOException; |
| import java.util.Date; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import javax.annotation.processing.AbstractProcessor; |
| import javax.annotation.processing.Processor; |
| import javax.annotation.processing.RoundEnvironment; |
| import javax.lang.model.element.Element; |
| import javax.lang.model.element.TypeElement; |
| |
| import org.apache.commons.digester3.annotations.rules.BeanPropertySetter; |
| import org.apache.commons.digester3.annotations.rules.CallMethod; |
| import org.apache.commons.digester3.annotations.rules.CallParam; |
| import org.apache.commons.digester3.annotations.rules.CreationRule; |
| import org.apache.commons.digester3.annotations.rules.FactoryCreate; |
| import org.apache.commons.digester3.annotations.rules.ObjectCreate; |
| import org.apache.commons.digester3.annotations.rules.PathCallParam; |
| import org.apache.commons.digester3.annotations.rules.SetNext; |
| import org.apache.commons.digester3.annotations.rules.SetProperty; |
| import org.apache.commons.digester3.annotations.rules.SetRoot; |
| import org.apache.commons.digester3.annotations.rules.SetTop; |
| import org.apache.commons.digester3.binder.AbstractRulesModule; |
| import org.kohsuke.MetaInfServices; |
| |
| import com.sun.codemodel.JBlock; |
| import com.sun.codemodel.JClassAlreadyExistsException; |
| import com.sun.codemodel.JCodeModel; |
| import com.sun.codemodel.JDefinedClass; |
| import com.sun.codemodel.JMethod; |
| import com.sun.codemodel.JPackage; |
| |
| /** |
| * @since 3.3 |
| */ |
| @MetaInfServices( Processor.class ) |
| public class DigesterAnnotationsProcessor |
| extends AbstractProcessor |
| { |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Set<String> getSupportedAnnotationTypes() |
| { |
| return new HashSet<String>( asList( BeanPropertySetter.class.getName(), |
| CallMethod.class.getName(), |
| CallParam.class.getName(), |
| CreationRule.class.getName(), |
| FactoryCreate.class.getName(), |
| ObjectCreate.class.getName(), |
| PathCallParam.class.getName(), |
| SetNext.class.getName(), |
| SetProperty.class.getName(), |
| SetRoot.class.getName(), |
| SetTop.class.getName() ) ); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public boolean process( Set<? extends TypeElement> annotations, RoundEnvironment environment ) |
| { |
| // processingEnv is a predefined member in AbstractProcessor class |
| // Messager allows the processor to output messages to the environment |
| FormattingMessager messager = new FormattingMessager( processingEnv.getMessager() ); |
| |
| // TODO get these values from -A parameters |
| String packageName = getClass().getPackage().getName(); |
| String className = "GeneratedRulesModule"; |
| |
| JCodeModel codeModel = new JCodeModel(); |
| |
| JPackage modulePackage = codeModel._package( packageName ); |
| |
| boolean success = false; |
| |
| try |
| { |
| JDefinedClass rulesModuleClass = modulePackage._class( FINAL | PUBLIC, className ); |
| rulesModuleClass.javadoc().add( format( "Generated by Apache Commons Digester at %s", new Date() ) ); |
| rulesModuleClass._extends( AbstractRulesModule.class ); |
| |
| JMethod configureMethod = rulesModuleClass.method( PROTECTED, parse( codeModel, "void" ), "configure" ); |
| configureMethod.javadoc().add( "{@inheritDoc}" ); |
| configureMethod.annotate( Override.class ); |
| JBlock configureMethodBody = configureMethod.body(); |
| |
| // Loop through the annotations that we are going to process |
| for ( TypeElement annotation : annotations ) |
| { |
| // Get the members |
| for ( Element element : environment.getElementsAnnotatedWith( annotation ) ) |
| { |
| messager.error( "Processing @%s %s", annotation, element ); |
| } |
| } |
| |
| codeModel.build( new FilerCodeWriter( processingEnv.getFiler() ) ); |
| |
| success = true; |
| } |
| catch ( JClassAlreadyExistsException e ) |
| { |
| messager.error( "Class %s.%s has been already defined", packageName, className ); |
| } |
| catch ( IOException e ) |
| { |
| messager.error( "Impossible to generate class %s.%s: %s", packageName, className, e.getMessage() ); |
| } |
| |
| return success; |
| } |
| |
| } |