/*
 * Copyright 2011 JBoss, by Red Hat, Inc
 *
 * 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 org.jboss.errai.codegen.meta.impl.gwt;

import com.google.gwt.core.ext.typeinfo.JField;
import com.google.gwt.core.ext.typeinfo.JGenericType;
import com.google.gwt.core.ext.typeinfo.TypeOracle;
import org.jboss.errai.codegen.meta.MetaClass;
import org.jboss.errai.codegen.meta.MetaField;
import org.jboss.errai.codegen.meta.MetaType;

import java.lang.annotation.Annotation;

/**
 * @author Mike Brock <cbrock@redhat.com>
 */
public class GWTField extends MetaField {
  private final JField field;
  private final Annotation[] annotations;
  private final TypeOracle oracle;

  GWTField(final TypeOracle oracle, final JField field) {
    this.oracle = oracle;
    this.field = field;
    this.annotations = field.getAnnotations();
  }

  @Override
  public MetaClass getType() {
    return GWTUtil.eraseOrReturn(oracle, field.getType());
  }

  @Override
  public String getName() {
    return field.getName();
  }

  @Override
  public Annotation[] getAnnotations() {
    return annotations == null ? new Annotation[0] : annotations;
  }

  @SuppressWarnings("unchecked")
  @Override
  public <A extends Annotation> A getAnnotation(final Class<A> annotation) {
    for (final Annotation a : getAnnotations()) {
      if (a.annotationType().equals(annotation)) return (A) a;
    }
    return null;
  }

  @Override
  public boolean isAnnotationPresent(final Class<? extends Annotation> annotation) {
    return getAnnotation(annotation) != null;
  }

  @Override
  public MetaType getGenericType() {
    final JGenericType genericType = field.getType().isGenericType();
    if (genericType != null) {
      return new GWTGenericDeclaration(oracle, genericType);
    }
    return null;
  }


  @Override
  public MetaClass getDeclaringClass() {
    return GWTClass.newInstance(oracle, field.getEnclosingType());
  }

  @Override
  public boolean isAbstract() {
    return false;
  }

  @Override
  public boolean isPublic() {
    return field.isPublic();
  }

  @Override
  public boolean isPrivate() {
    return field.isPrivate();
  }

  @Override
  public boolean isProtected() {
    return field.isProtected();
  }

  @Override
  public boolean isFinal() {
    return field.isFinal();
  }

  @Override
  public boolean isStatic() {
    return field.isStatic();
  }

  @Override
  public boolean isTransient() {
    return field.isTransient();
  }

  @Override
  public boolean isVolatile() {
    return field.isVolatile();
  }

  @Override
  public boolean isSynthetic() {
    return false;
  }

  @Override
  public boolean isSynchronized() {
    return false;
  }

}
