/*******************************************************************************
 * Copyright (c) 2018 Willink Transformations 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:
 *     Adolfo Sanchez-Barbudo Herrera - initial API and implementation
 *******************************************************************************/
/**
 */
package org.eclipse.qvtd.doc.miniocl.impl;

import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.InternalEObject;
import org.eclipse.emf.ecore.impl.ENotificationImpl;
import org.eclipse.jdt.annotation.NonNull;
import org.eclipse.qvtd.doc.miniocl.MiniOCLPackage;
import org.eclipse.qvtd.doc.miniocl.Variable;
import org.eclipse.qvtd.doc.miniocl.VariableExp;
import org.eclipse.qvtd.doc.miniocl.util.Visitor;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Variable Exp</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * </p>
 * <ul>
 *   <li>{@link org.eclipse.qvtd.doc.miniocl.impl.VariableExpImpl#getReferredVariable <em>Referred Variable</em>}</li>
 * </ul>
 *
 * @generated
 */
public class VariableExpImpl extends OCLExpressionImpl implements VariableExp {
	/**
	 * The cached value of the '{@link #getReferredVariable() <em>Referred Variable</em>}' reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getReferredVariable()
	 * @generated
	 * @ordered
	 */
	protected Variable referredVariable;

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected VariableExpImpl() {
		super();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	protected EClass eStaticClass() {
		return MiniOCLPackage.Literals.VARIABLE_EXP;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Variable getReferredVariable() {
		if (referredVariable != null && referredVariable.eIsProxy()) {
			InternalEObject oldReferredVariable = (InternalEObject)referredVariable;
			referredVariable = (Variable)eResolveProxy(oldReferredVariable);
			if (referredVariable != oldReferredVariable) {
				if (eNotificationRequired())
					eNotify(new ENotificationImpl(this, Notification.RESOLVE, MiniOCLPackage.VARIABLE_EXP__REFERRED_VARIABLE, oldReferredVariable, referredVariable));
			}
		}
		return referredVariable;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Variable basicGetReferredVariable() {
		return referredVariable;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setReferredVariable(Variable newReferredVariable) {
		Variable oldReferredVariable = referredVariable;
		referredVariable = newReferredVariable;
		if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, MiniOCLPackage.VARIABLE_EXP__REFERRED_VARIABLE, oldReferredVariable, referredVariable));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public Object eGet(int featureID, boolean resolve, boolean coreType) {
		switch (featureID) {
			case MiniOCLPackage.VARIABLE_EXP__REFERRED_VARIABLE:
				if (resolve) return getReferredVariable();
				return basicGetReferredVariable();
		}
		return super.eGet(featureID, resolve, coreType);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void eSet(int featureID, Object newValue) {
		switch (featureID) {
			case MiniOCLPackage.VARIABLE_EXP__REFERRED_VARIABLE:
				setReferredVariable((Variable)newValue);
				return;
		}
		super.eSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void eUnset(int featureID) {
		switch (featureID) {
			case MiniOCLPackage.VARIABLE_EXP__REFERRED_VARIABLE:
				setReferredVariable((Variable)null);
				return;
		}
		super.eUnset(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID) {
		switch (featureID) {
			case MiniOCLPackage.VARIABLE_EXP__REFERRED_VARIABLE:
				return referredVariable != null;
		}
		return super.eIsSet(featureID);
	}

	/**
	 * {@inheritDoc}
	 * @generated
	 */
	@Override
	public <R> R accept(@NonNull Visitor<R> visitor) {
		return visitor.visitVariableExp(this);
	}

} //VariableExpImpl