/**
 * Copyright (c) 2016 CEA LIST.
 * 
 * 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:
 *  Arnault Lapitre (CEA LIST) arnault.lapitre@cea.fr
 *   - Initial API and Implementation
 */
package org.eclipse.efm.ecore.sew.expression.impl;

import java.util.Collection;

import org.eclipse.efm.ecore.sew.WValueSpecification;

import org.eclipse.efm.ecore.sew.expression.Expression;
import org.eclipse.efm.ecore.sew.expression.ExpressionPackage;

import org.eclipse.efm.ecore.sew.impl.WValueSpecificationImpl;

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.util.EObjectContainmentEList;
import org.eclipse.emf.ecore.util.InternalEList;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Expression</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * </p>
 * <ul>
 *   <li>{@link org.eclipse.efm.ecore.sew.expression.impl.ExpressionImpl#getOperator <em>Operator</em>}</li>
 *   <li>{@link org.eclipse.efm.ecore.sew.expression.impl.ExpressionImpl#getOperand <em>Operand</em>}</li>
 * </ul>
 *
 * @generated
 */
public class ExpressionImpl extends WValueSpecificationImpl implements Expression {
	/**
	 * The default value of the '{@link #getOperator() <em>Operator</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getOperator()
	 * @generated
	 * @ordered
	 */
	protected static final String OPERATOR_EDEFAULT = null;

	/**
	 * The cached value of the '{@link #getOperator() <em>Operator</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getOperator()
	 * @generated
	 * @ordered
	 */
	protected String operator = OPERATOR_EDEFAULT;

	/**
	 * The cached value of the '{@link #getOperand() <em>Operand</em>}' containment reference list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getOperand()
	 * @generated
	 * @ordered
	 */
	protected EList<WValueSpecification> operand;

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected ExpressionImpl() {
		super();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	protected EClass eStaticClass() {
		return ExpressionPackage.Literals.EXPRESSION;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public String getOperator() {
		return operator;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void setOperator(String newOperator) {
		String oldOperator = operator;
		operator = newOperator;
		if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, ExpressionPackage.EXPRESSION__OPERATOR, oldOperator, operator));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public EList<WValueSpecification> getOperand() {
		if (operand == null) {
			operand = new EObjectContainmentEList<WValueSpecification>(WValueSpecification.class, this, ExpressionPackage.EXPRESSION__OPERAND);
		}
		return operand;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
		switch (featureID) {
			case ExpressionPackage.EXPRESSION__OPERAND:
				return ((InternalEList<?>)getOperand()).basicRemove(otherEnd, 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 ExpressionPackage.EXPRESSION__OPERATOR:
				return getOperator();
			case ExpressionPackage.EXPRESSION__OPERAND:
				return getOperand();
		}
		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 ExpressionPackage.EXPRESSION__OPERATOR:
				setOperator((String)newValue);
				return;
			case ExpressionPackage.EXPRESSION__OPERAND:
				getOperand().clear();
				getOperand().addAll((Collection<? extends WValueSpecification>)newValue);
				return;
		}
		super.eSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void eUnset(int featureID) {
		switch (featureID) {
			case ExpressionPackage.EXPRESSION__OPERATOR:
				setOperator(OPERATOR_EDEFAULT);
				return;
			case ExpressionPackage.EXPRESSION__OPERAND:
				getOperand().clear();
				return;
		}
		super.eUnset(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID) {
		switch (featureID) {
			case ExpressionPackage.EXPRESSION__OPERATOR:
				return OPERATOR_EDEFAULT == null ? operator != null : !OPERATOR_EDEFAULT.equals(operator);
			case ExpressionPackage.EXPRESSION__OPERAND:
				return operand != null && !operand.isEmpty();
		}
		return super.eIsSet(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public String toString() {
		if (eIsProxy()) return super.toString();

		StringBuilder result = new StringBuilder(super.toString());
		result.append(" (operator: ");
		result.append(operator);
		result.append(')');
		return result.toString();
	}

} //ExpressionImpl