/**
 * Copyright (c) 2008, 2021 Obeo.
 * 
 * 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:
 *      Obeo - initial API and implementation
 */
package org.eclipse.acceleo.impl;

import java.util.Collection;

import org.eclipse.acceleo.AcceleoPackage;
import org.eclipse.acceleo.Binding;
import org.eclipse.acceleo.Block;
import org.eclipse.acceleo.LetStatement;
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.InternalEObject;
import org.eclipse.emf.ecore.impl.ENotificationImpl;
import org.eclipse.emf.ecore.impl.MinimalEObjectImpl;
import org.eclipse.emf.ecore.util.EObjectContainmentEList;
import org.eclipse.emf.ecore.util.InternalEList;

/**
 * <!-- begin-user-doc --> An implementation of the model object '<em><b>Let Statement</b></em>'. <!--
 * end-user-doc -->
 * <p>
 * The following features are implemented:
 * </p>
 * <ul>
 * <li>{@link org.eclipse.acceleo.impl.LetStatementImpl#getVariables <em>Variables</em>}</li>
 * <li>{@link org.eclipse.acceleo.impl.LetStatementImpl#getBody <em>Body</em>}</li>
 * </ul>
 *
 * @generated
 */
public class LetStatementImpl extends MinimalEObjectImpl.Container implements LetStatement {
	/**
	 * The cached value of the '{@link #getVariables() <em>Variables</em>}' containment reference list. <!--
	 * begin-user-doc --> <!-- end-user-doc -->
	 * 
	 * @see #getVariables()
	 * @generated
	 * @ordered
	 */
	protected EList<Binding> variables;

	/**
	 * The cached value of the '{@link #getBody() <em>Body</em>}' containment reference. <!-- begin-user-doc
	 * --> <!-- end-user-doc -->
	 * 
	 * @see #getBody()
	 * @generated
	 * @ordered
	 */
	protected Block body;

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

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

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * 
	 * @generated
	 */
	@Override
	public EList<Binding> getVariables() {
		if (variables == null) {
			variables = new EObjectContainmentEList<Binding>(Binding.class, this,
					AcceleoPackage.LET_STATEMENT__VARIABLES);
		}
		return variables;
	}

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * 
	 * @generated
	 */
	@Override
	public Block getBody() {
		return body;
	}

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * 
	 * @generated
	 */
	public NotificationChain basicSetBody(Block newBody, NotificationChain msgs) {
		Block oldBody = body;
		body = newBody;
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET,
					AcceleoPackage.LET_STATEMENT__BODY, oldBody, newBody);
			if (msgs == null)
				msgs = notification;
			else
				msgs.add(notification);
		}
		return msgs;
	}

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * 
	 * @generated
	 */
	@Override
	public void setBody(Block newBody) {
		if (newBody != body) {
			NotificationChain msgs = null;
			if (body != null)
				msgs = ((InternalEObject)body).eInverseRemove(this, EOPPOSITE_FEATURE_BASE
						- AcceleoPackage.LET_STATEMENT__BODY, null, msgs);
			if (newBody != null)
				msgs = ((InternalEObject)newBody).eInverseAdd(this, EOPPOSITE_FEATURE_BASE
						- AcceleoPackage.LET_STATEMENT__BODY, null, msgs);
			msgs = basicSetBody(newBody, msgs);
			if (msgs != null)
				msgs.dispatch();
		} else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, AcceleoPackage.LET_STATEMENT__BODY, newBody,
					newBody));
	}

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * 
	 * @generated
	 */
	@Override
	public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
		switch (featureID) {
			case AcceleoPackage.LET_STATEMENT__VARIABLES:
				return ((InternalEList<?>)getVariables()).basicRemove(otherEnd, msgs);
			case AcceleoPackage.LET_STATEMENT__BODY:
				return basicSetBody(null, msgs);
		}
		return super.eInverseRemove(otherEnd, featureID, msgs);
	}

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * 
	 * @generated
	 */
	@Override
	public Object eGet(int featureID, boolean resolve, boolean coreType) {
		switch (featureID) {
			case AcceleoPackage.LET_STATEMENT__VARIABLES:
				return getVariables();
			case AcceleoPackage.LET_STATEMENT__BODY:
				return getBody();
		}
		return super.eGet(featureID, resolve, coreType);
	}

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * 
	 * @generated
	 */
	@SuppressWarnings("unchecked")
	@Override
	public void eSet(int featureID, Object newValue) {
		switch (featureID) {
			case AcceleoPackage.LET_STATEMENT__VARIABLES:
				getVariables().clear();
				getVariables().addAll((Collection<? extends Binding>)newValue);
				return;
			case AcceleoPackage.LET_STATEMENT__BODY:
				setBody((Block)newValue);
				return;
		}
		super.eSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * 
	 * @generated
	 */
	@Override
	public void eUnset(int featureID) {
		switch (featureID) {
			case AcceleoPackage.LET_STATEMENT__VARIABLES:
				getVariables().clear();
				return;
			case AcceleoPackage.LET_STATEMENT__BODY:
				setBody((Block)null);
				return;
		}
		super.eUnset(featureID);
	}

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * 
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID) {
		switch (featureID) {
			case AcceleoPackage.LET_STATEMENT__VARIABLES:
				return variables != null && !variables.isEmpty();
			case AcceleoPackage.LET_STATEMENT__BODY:
				return body != null;
		}
		return super.eIsSet(featureID);
	}

} // LetStatementImpl