/*******************************************************************************
 * Copyright (c) 2004, 2005 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jem.internal.instantiation.impl;
/*
 *  $RCSfile: PTArrayAccessImpl.java,v $
 *  $Revision: 1.3 $  $Date: 2005/08/24 20:20:24 $ 
 */
import java.util.Collection;

import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.NotificationChain;

import org.eclipse.emf.common.util.EList;

import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.InternalEObject;

import org.eclipse.emf.ecore.impl.ENotificationImpl;

import org.eclipse.emf.ecore.util.EObjectContainmentEList;
import org.eclipse.emf.ecore.util.InternalEList;

import org.eclipse.jem.internal.instantiation.*;
import org.eclipse.jem.internal.instantiation.PTArrayAccess;
import org.eclipse.jem.internal.instantiation.PTExpression;
import org.eclipse.jem.internal.instantiation.InstantiationPackage;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Array Access</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 *   <li>{@link org.eclipse.jem.internal.instantiation.impl.PTArrayAccessImpl#getArray <em>Array</em>}</li>
 *   <li>{@link org.eclipse.jem.internal.instantiation.impl.PTArrayAccessImpl#getIndexes <em>Indexes</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public class PTArrayAccessImpl extends PTExpressionImpl implements PTArrayAccess {
	/**
	 * The cached value of the '{@link #getArray() <em>Array</em>}' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getArray()
	 * @generated
	 * @ordered
	 */
	protected PTExpression array = null;

	/**
	 * The cached value of the '{@link #getIndexes() <em>Indexes</em>}' containment reference list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getIndexes()
	 * @generated
	 * @ordered
	 */
	protected EList indexes = null;

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected EClass eStaticClass() {
		return InstantiationPackage.eINSTANCE.getPTArrayAccess();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public PTExpression getArray() {
		return array;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetArray(PTExpression newArray, NotificationChain msgs) {
		PTExpression oldArray = array;
		array = newArray;
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, InstantiationPackage.PT_ARRAY_ACCESS__ARRAY, oldArray, newArray);
			if (msgs == null) msgs = notification; else msgs.add(notification);
		}
		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setArray(PTExpression newArray) {
		if (newArray != array) {
			NotificationChain msgs = null;
			if (array != null)
				msgs = ((InternalEObject)array).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - InstantiationPackage.PT_ARRAY_ACCESS__ARRAY, null, msgs);
			if (newArray != null)
				msgs = ((InternalEObject)newArray).eInverseAdd(this, EOPPOSITE_FEATURE_BASE - InstantiationPackage.PT_ARRAY_ACCESS__ARRAY, null, msgs);
			msgs = basicSetArray(newArray, msgs);
			if (msgs != null) msgs.dispatch();
		}
		else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, InstantiationPackage.PT_ARRAY_ACCESS__ARRAY, newArray, newArray));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public EList getIndexes() {
		if (indexes == null) {
			indexes = new EObjectContainmentEList(PTExpression.class, this, InstantiationPackage.PT_ARRAY_ACCESS__INDEXES);
		}
		return indexes;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, Class baseClass, NotificationChain msgs) {
		if (featureID >= 0) {
			switch (eDerivedStructuralFeatureID(featureID, baseClass)) {
				case InstantiationPackage.PT_ARRAY_ACCESS__ARRAY:
					return basicSetArray(null, msgs);
				case InstantiationPackage.PT_ARRAY_ACCESS__INDEXES:
					return ((InternalEList)getIndexes()).basicRemove(otherEnd, msgs);
				default:
					return eDynamicInverseRemove(otherEnd, featureID, baseClass, msgs);
			}
		}
		return eBasicSetContainer(null, featureID, msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Object eGet(EStructuralFeature eFeature, boolean resolve) {
		switch (eDerivedStructuralFeatureID(eFeature)) {
			case InstantiationPackage.PT_ARRAY_ACCESS__ARRAY:
				return getArray();
			case InstantiationPackage.PT_ARRAY_ACCESS__INDEXES:
				return getIndexes();
		}
		return eDynamicGet(eFeature, resolve);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void eSet(EStructuralFeature eFeature, Object newValue) {
		switch (eDerivedStructuralFeatureID(eFeature)) {
			case InstantiationPackage.PT_ARRAY_ACCESS__ARRAY:
				setArray((PTExpression)newValue);
				return;
			case InstantiationPackage.PT_ARRAY_ACCESS__INDEXES:
				getIndexes().clear();
				getIndexes().addAll((Collection)newValue);
				return;
		}
		eDynamicSet(eFeature, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void eUnset(EStructuralFeature eFeature) {
		switch (eDerivedStructuralFeatureID(eFeature)) {
			case InstantiationPackage.PT_ARRAY_ACCESS__ARRAY:
				setArray((PTExpression)null);
				return;
			case InstantiationPackage.PT_ARRAY_ACCESS__INDEXES:
				getIndexes().clear();
				return;
		}
		eDynamicUnset(eFeature);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public boolean eIsSet(EStructuralFeature eFeature) {
		switch (eDerivedStructuralFeatureID(eFeature)) {
			case InstantiationPackage.PT_ARRAY_ACCESS__ARRAY:
				return array != null;
			case InstantiationPackage.PT_ARRAY_ACCESS__INDEXES:
				return indexes != null && !indexes.isEmpty();
		}
		return eDynamicIsSet(eFeature);
	}

	/*
	 *  (non-Javadoc)
	 * @see org.eclipse.jem.internal.instantiation.impl.ExpressionImpl#accept0(org.eclipse.jem.internal.instantiation.ParseVisitor)
	 */
	protected void accept0(ParseVisitor visitor) {
		boolean visitChildren = visitor.visit(this);
		if (visitChildren) {
			// visit children in normal left to right reading order
			acceptChild(visitor, getArray());
			if (indexes != null)
				acceptChildren(visitor, indexes);
		}
		visitor.endVisit(this);
	}	

} //ArrayAccessImpl