br.com.objectos.code.ElementRetry Maven / Gradle / Ivy

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/*
 * Copyright 2016 Objectos, Fábrica de Software LTDA.
 *
 * 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 br.com.objectos.code;

import java.util.Set;

import javax.lang.model.element.Element;
import javax.lang.model.element.TypeElement;

/**
 * @author [email protected] (Marcio Endo)
 */
abstract class ElementRetry {

  private static final ElementRetry VOID = new Void();

  ElementRetry() {
  }

  public static ElementRetry of(Element element) {
    return Util.isTypeInfoKind(element)
        ? new TypeElementRetry((TypeElement) element)
        : VOID;
  }

  public void addTo(Set elementRetrySet) {
  }

  public void removeFrom(Set elementRetrySet) {
  }

  public TypeElement retry(ProcessingEnvironmentWrapper processingEnv) {
    throw new UnsupportedOperationException();
  }

  private static class TypeElementRetry extends ElementRetry {

    private final String qualifiedName;

    public TypeElementRetry(TypeElement element) {
      qualifiedName = element.getQualifiedName().toString();
    }

    @Override
    public void addTo(Set elementRetrySet) {
      elementRetrySet.add(this);
    }

    @Override
    public boolean equals(Object obj) {
      return qualifiedName.equals(((TypeElementRetry) obj).qualifiedName);
    }

    @Override
    public int hashCode() {
      return qualifiedName.hashCode();
    }

    @Override
    public void removeFrom(Set elementRetrySet) {
      elementRetrySet.remove(this);
    }

    @Override
    public TypeElement retry(ProcessingEnvironmentWrapper processingEnv) {
      return processingEnv.getTypeElement(qualifiedName);
    }

  }

  private static class Void extends ElementRetry {

  }

}