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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.Map;
import java.util.Optional;

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

  ARRAY_ANNOTATION,

  ARRAY_BOOLEAN,

  ARRAY_CHAR,

  ARRAY_DOUBLE,

  ARRAY_ENUM,

  ARRAY_FLOAT,

  ARRAY_INT,

  ARRAY_LONG,

  ARRAY_STRING,

  ARRAY_TYPE,

  ANNOTATION {
    @Override
    public AnnotationValueKind toArray() {
      return ARRAY_ANNOTATION;
    }
  },

  ENUM {
    @Override
    public AnnotationValueKind toArray() {
      return ARRAY_ENUM;
    }
  },

  PRIMITIVE_BOOLEAN {
    @Override
    public AnnotationValueKind toArray() {
      return ARRAY_BOOLEAN;
    }
  },

  PRIMITIVE_CHAR {
    @Override
    public AnnotationValueKind toArray() {
      return ARRAY_CHAR;
    }
  },

  PRIMITIVE_DOUBLE {
    @Override
    public AnnotationValueKind toArray() {
      return ARRAY_DOUBLE;
    }
  },

  PRIMITIVE_FLOAT {
    @Override
    public AnnotationValueKind toArray() {
      return ARRAY_FLOAT;
    }
  },

  PRIMITIVE_INT {
    @Override
    public AnnotationValueKind toArray() {
      return ARRAY_INT;
    }
  },

  PRIMITIVE_LONG {
    @Override
    public AnnotationValueKind toArray() {
      return ARRAY_LONG;
    }
  },

  STRING {
    @Override
    public AnnotationValueKind toArray() {
      return ARRAY_STRING;
    }
  },

  TYPE {
    @Override
    public AnnotationValueKind toArray() {
      return ARRAY_TYPE;
    }
  },

  UNKNOWN;

  public AnnotationValueKind toArray() {
    return UNKNOWN;
  }

  public  Optional getIfPresent(Map nameMap, String name) {
    if (!nameMap.containsKey(name)) {
      return Optional.empty();
    }

    AnnotationValueInfo value = nameMap.get(name);
    AnnotationValueKind kind = value.kind();
    if (!kind.equals(this)) {
      throw new ClassCastException(kind + " cannot be cast to " + this);
    }

    @SuppressWarnings("unchecked")
    T object = (T) value.value();
    return Optional.of(object);
  }

}