io.sundr.dsl.internal.element.functions.ToKeywords Maven / Gradle / Ivy

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/*
 * Copyright 2015 The original authors.
 *
 *    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 io.sundr.dsl.internal.element.functions;

import java.util.HashSet;
import java.util.Set;
import java.util.function.Function;

import javax.lang.model.element.AnnotationMirror;
import javax.lang.model.element.Element;
import javax.lang.model.element.TypeElement;
import javax.lang.model.util.Elements;

import io.sundr.dsl.annotations.Keyword;
import io.sundr.dsl.internal.utils.TypeDefUtils;

public class ToKeywords implements Function> {

  private final TypeElement KEYWORD;
  private final Element VALUE;

  public ToKeywords(Elements elements) {
    KEYWORD = elements.getTypeElement(Keyword.class.getCanonicalName());
    VALUE = KEYWORD.getEnclosedElements().get(0);
  }

  public Set apply(Element element) {
    Set keywords = new HashSet();
    for (AnnotationMirror mirror : element.getAnnotationMirrors()) {
      if (mirror.getAnnotationType().asElement().equals(KEYWORD)) {
        keywords.addAll(TypeDefUtils.toClassNames(mirror.getElementValues().get(VALUE).getValue()));
      }

      for (AnnotationMirror innerMirror : mirror.getAnnotationType().asElement().getAnnotationMirrors()) {
        if (innerMirror.getAnnotationType().asElement().equals(KEYWORD)) {
          if (innerMirror.getElementValues().containsKey(VALUE)) {
            keywords.addAll(TypeDefUtils.toClassNames(innerMirror.getElementValues().get(VALUE).getValue()));
          } else {
            keywords.addAll(TypeDefUtils.toClassNames(mirror.getAnnotationType().asElement().toString()));
          }
        }
      }
    }
    return keywords;
  }

}