/**
 */
package org.eclipse.viatra.solver.language.solverLanguage.impl;

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.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.viatra.solver.language.solverLanguage.Expression;
import org.eclipse.viatra.solver.language.solverLanguage.LetBinding;
import org.eclipse.viatra.solver.language.solverLanguage.LetExpression;
import org.eclipse.viatra.solver.language.solverLanguage.SolverLanguagePackage;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Let Expression</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * </p>
 * <ul>
 *   <li>{@link org.eclipse.viatra.solver.language.solverLanguage.impl.LetExpressionImpl#getBindings <em>Bindings</em>}</li>
 *   <li>{@link org.eclipse.viatra.solver.language.solverLanguage.impl.LetExpressionImpl#getBody <em>Body</em>}</li>
 * </ul>
 *
 * @generated
 */
public class LetExpressionImpl extends ExpressionImpl implements LetExpression {
	/**
	 * The cached value of the '{@link #getBindings() <em>Bindings</em>}' containment reference list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getBindings()
	 * @generated
	 * @ordered
	 */
	protected EList<LetBinding> bindings;

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

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

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public EList<LetBinding> getBindings() {
		if (bindings == null) {
			bindings = new EObjectContainmentEList<LetBinding>(LetBinding.class, this,
					SolverLanguagePackage.LET_EXPRESSION__BINDINGS);
		}
		return bindings;
	}

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

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

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
		switch (featureID) {
		case SolverLanguagePackage.LET_EXPRESSION__BINDINGS:
			return ((InternalEList<?>) getBindings()).basicRemove(otherEnd, msgs);
		case SolverLanguagePackage.LET_EXPRESSION__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 SolverLanguagePackage.LET_EXPRESSION__BINDINGS:
			return getBindings();
		case SolverLanguagePackage.LET_EXPRESSION__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 SolverLanguagePackage.LET_EXPRESSION__BINDINGS:
			getBindings().clear();
			getBindings().addAll((Collection<? extends LetBinding>) newValue);
			return;
		case SolverLanguagePackage.LET_EXPRESSION__BODY:
			setBody((Expression) newValue);
			return;
		}
		super.eSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void eUnset(int featureID) {
		switch (featureID) {
		case SolverLanguagePackage.LET_EXPRESSION__BINDINGS:
			getBindings().clear();
			return;
		case SolverLanguagePackage.LET_EXPRESSION__BODY:
			setBody((Expression) null);
			return;
		}
		super.eUnset(featureID);
	}

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

} //LetExpressionImpl