Android Open Source - JsonPullParser Json Annotation Processor

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright 2011 vvakame <vvakame@gmail.com>
 */*from  ww w .j  a  v a2s.  c o  m*/
 * 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 net.vvakame.util.jsonpullparser.factory;

import java.io.IOException;
import java.util.Map;
import java.util.Set;

import javax.annotation.processing.AbstractProcessor;
import javax.annotation.processing.ProcessingEnvironment;
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 net.vvakame.util.jsonpullparser.annotation.JsonModel;
import static javax.lang.model.util.ElementFilter.*;

/**
 * Annotation processing logic.
 * @see JsonModelGenerator
 * @author vvakame
 */
@SupportedSourceVersion(SourceVersion.RELEASE_6)
@SupportedAnnotationTypes("net.vvakame.util.jsonpullparser.annotation.*")
public class JsonAnnotationProcessor extends AbstractProcessor {

  private static final String CLASS_POSTFIX_OPTION = "JsonPullParserClassPostfix";

  private static final String DEBUG_OPTION = "JsonPullParserDebug";


  @Override
  public synchronized void init(ProcessingEnvironment processingEnv) {
    super.init(processingEnv);
    Log.init(processingEnv.getMessager());

    String debug = getOption(DEBUG_OPTION);
    if ("true".equalsIgnoreCase(debug)) {
      Log.setDebug(true);
    } else {
      Log.setDebug(false);
    }

    Log.d("init JsonAnotationProcessor");
  }

  @Override
  public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {

    JsonModelGenerator.init(processingEnv);

    Log.d("start process method.");

    final String postfix;
    {
      String optPostfix = getOption(CLASS_POSTFIX_OPTION);
      if (optPostfix == null) {
        postfix = "Gen";
      } else {
        postfix = optPostfix;
      }
    }

    for (Element element : typesIn(roundEnv.getElementsAnnotatedWith(JsonModel.class))) {

      Log.d("process " + element.toString());

      JsonModelGenerator generater = JsonModelGenerator.from(element, postfix);
      if (generater.isEncountError()) {
        continue;
      }
      try {
        generater.write();
      } catch (IOException e) {
        Log.e(e);
      }
    }

    return true;
  }

  String getOption(String key) {
    Map<String, String> options = processingEnv.getOptions();
    if (options.containsKey(key) && !"".equals(options.get(key))) {
      return options.get(key);
    } else {
      return null;
    }
  }
}

Java Source Code List

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