/*

  * To change this template, choose Tools | Templates

  * and open the template in the editor.

  */

 package org.apidesign.anagram.impl.annotations;

 import java.util.Set;

 import javax.annotation.processing.Processor;

 import javax.annotation.processing.RoundEnvironment;

 import javax.annotation.processing.SupportedAnnotationTypes;

 import javax.annotation.processing.SupportedSourceVersion;

 import javax.lang.model.SourceVersion;

 import javax.lang.model.element.Element;

 import javax.lang.model.element.TypeElement;

 import javax.lang.model.util.Elements;

 import org.apidesign.anagram.api.annotations.Words;

 import org.openide.filesystems.annotations.LayerBuilder.File;

 import org.openide.filesystems.annotations.LayerGeneratingProcessor;

 import org.openide.filesystems.annotations.LayerGenerationException;

 import org.openide.util.lookup.ServiceProvider;

 /** Compile time caches example. Processor that is triggered

  * during compilation when a <code>@Words</code> annotations is found.

  * It generates some declarative registrations, so the annotated object

  * is found later during runtime, but not instantiated before it is really

  * needed.

  *

  * @author Jaroslav Tulach <jtulach@netbeans.org>

  */

 // BEGIN: anagram.api.WordsProcessor

 @ServiceProvider(service=Processor.class)

 @SupportedAnnotationTypes("org.apidesign.anagram.api.annotations.Words")

 @SupportedSourceVersion(SourceVersion.RELEASE_5)

 public class WordsProcessor extends LayerGeneratingProcessor {

     @Override

     protected boolean handleProcess(

         Set<? extends TypeElement> set, RoundEnvironment env

     ) throws LayerGenerationException {

         Elements elements = processingEnv.getElementUtils();

         for (Element e : env.getElementsAnnotatedWith(Words.class)) {

             Words w = e.getAnnotation(Words.class);

             TypeElement te = (TypeElement)e.getEnclosingElement();

             String teName = elements.getBinaryName(te).toString();

 // FINISH: anagram.api.WordsProcessor

 // BEGIN: anagram.api.WordsProcessorLayer

             File f = layer(e).file(

                 "Services/" + teName.replace('.', '-') + ".instance"

             );

             f.methodvalue(

                 "instanceCreate",

                 "org.apidesign.anagram.impl.annotations.WordsImpl",

                 "create"

             );

             f.stringvalue(

                 "instanceClass",

                 "org.apidesign.anagram.impl.annotations.WordsImpl"

             );

             f.stringvalue(

                 "instanceOf",

                 "org.apidesign.anagram.api.WordLibrary"

             );

             f.methodvalue(

                 "words",

                 teName,

                 e.getSimpleName().toString()

             );

             f.write();

 // END: anagram.api.WordsProcessorLayer

         }

         return true;

     }

 }