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/*******************************************************************************
 * Copyright (c) 2010 Codehaus.org, SpringSource, and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Andy Clement        - Initial API and implementation
 *******************************************************************************/
package org.codehaus.jdt.groovy.internal.compiler.ast;

import java.util.List;

import org.codehaus.groovy.ast.AnnotationNode;
import org.codehaus.groovy.ast.ClassNode;
import org.codehaus.groovy.ast.FieldNode;
import org.codehaus.groovy.ast.expr.Expression;
import org.eclipse.jdt.internal.compiler.lookup.AnnotationBinding;
import org.eclipse.jdt.internal.compiler.lookup.Binding;
import org.eclipse.jdt.internal.compiler.lookup.FieldBinding;

/**
 * Wraps a JDT FieldBinding, representing it to groovy as a FieldNode. Translates annotations only when required.
 * 
 * @author Andy Clement
 */
@SuppressWarnings("restriction")
public class JDTFieldNode extends FieldNode implements JDTNode {

	private FieldBinding fieldBinding;
	private JDTResolver resolver;
	private int bits = 0;

	public JDTFieldNode(FieldBinding fieldBinding, JDTResolver resolver, String name, int modifiers, ClassNode type,
			JDTClassNode declaringType, Expression initializerExpression) {
		super(name, modifiers, type, declaringType, initializerExpression);
		this.resolver = resolver;
		this.fieldBinding = fieldBinding;
	}

	@Override
	public void addAnnotation(AnnotationNode value) {
		throw new IllegalStateException("JDTFieldNode is immutable");
	}

	@Override
	public void addAnnotations(List annotations) {
		throw new IllegalStateException("JDTFieldNode is immutable");
	}

	@Override
	public List getAnnotations() {
		ensureAnnotationsInitialized();
		return super.getAnnotations();
	}

	@Override
	public List getAnnotations(ClassNode type) {
		ensureAnnotationsInitialized();
		return super.getAnnotations(type);
	}

	private void ensureAnnotationsInitialized() {
		if ((bits & ANNOTATIONS_INITIALIZED) == 0) {
			// If the backing declaring entity for the member is not a SourceTypeBinding then the
			// annotations will have already been discarded/lost
			AnnotationBinding[] annotationBindings = fieldBinding.getAnnotations();
			for (AnnotationBinding annotationBinding : annotationBindings) {
				super.addAnnotation(new JDTAnnotationNode(annotationBinding, this.resolver));
			}
			bits |= ANNOTATIONS_INITIALIZED;
		}
	}

	public FieldBinding getFieldBinding() {
		return fieldBinding;
	}

	public JDTResolver getResolver() {
		return resolver;
	}

	public Binding getJdtBinding() {
		return fieldBinding;
	}

	public boolean isDeprecated() {
		return fieldBinding.isDeprecated();
	}

}