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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.Optional;
import java.util.Set;
import java.util.stream.Collectors;

import javax.lang.model.element.Modifier;

/**
 * @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 modifiers.stream()
        .map(m -> {
          try {
            ModifierInfo info = ModifierInfo.valueOf(m.name());
            return Optional.of(info);
          } catch (IllegalArgumentException e) {
            return Optional. empty();
          }
        })
        .filter(Optional::isPresent)
        .map(Optional::get)
        .collect(Collectors.toSet());
  }

}