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/*
 * Copyright 2014 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.way.code;

import java.util.Set;

import javax.lang.model.element.Modifier;

import br.com.objectos.way.core.util.WayIterables;

import com.google.common.base.Enums;
import com.google.common.base.Function;
import com.google.common.base.Optional;

/**
 * @author [email protected] (Marcio Endo)
 */
public enum ModifierInfo {

  STATIC,

  FINAL,

  SYNCHRONIZED,

  VOLATILE,

  TRANSIENT,

  NATIVE,

  ABSTRACT,

  STRICT;

  @Override
  public String toString() {
    return name().toLowerCase();
  }

  public static Set fromJdk(Set modifiers) {
    return WayIterables.from(modifiers)
        .transform(ModifierToModiferInfo.INSTANCE)
        .presentInstancesOf(ModifierInfo.class)
        .toImmutableSet();
  }

  private static enum ModifierToModiferInfo implements Function> {
    INSTANCE;
    @Override
    public Optional apply(Modifier input) {
      return Enums.getIfPresent(ModifierInfo.class, input.name());
    }
  }

}