/**
 * generated by Xtext version 2.21.0
 */
package ca.queensu.cs.mase.urml.impl;

import ca.queensu.cs.mase.urml.Assignable;
import ca.queensu.cs.mase.urml.Assignment;
import ca.queensu.cs.mase.urml.Expression;
import ca.queensu.cs.mase.urml.UrmlPackage;

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

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

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

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Assignment</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * </p>
 * <ul>
 *   <li>{@link ca.queensu.cs.mase.urml.impl.AssignmentImpl#getLvalue <em>Lvalue</em>}</li>
 *   <li>{@link ca.queensu.cs.mase.urml.impl.AssignmentImpl#getExp <em>Exp</em>}</li>
 * </ul>
 *
 * @generated
 */
public class AssignmentImpl extends StatementOperationImpl implements Assignment
{
  /**
   * The cached value of the '{@link #getLvalue() <em>Lvalue</em>}' reference.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @see #getLvalue()
   * @generated
   * @ordered
   */
  protected Assignable lvalue;

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

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

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

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public Assignable getLvalue()
  {
    if (lvalue != null && lvalue.eIsProxy())
    {
      InternalEObject oldLvalue = (InternalEObject)lvalue;
      lvalue = (Assignable)eResolveProxy(oldLvalue);
      if (lvalue != oldLvalue)
      {
        if (eNotificationRequired())
          eNotify(new ENotificationImpl(this, Notification.RESOLVE, UrmlPackage.ASSIGNMENT__LVALUE, oldLvalue, lvalue));
      }
    }
    return lvalue;
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public Assignable basicGetLvalue()
  {
    return lvalue;
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public void setLvalue(Assignable newLvalue)
  {
    Assignable oldLvalue = lvalue;
    lvalue = newLvalue;
    if (eNotificationRequired())
      eNotify(new ENotificationImpl(this, Notification.SET, UrmlPackage.ASSIGNMENT__LVALUE, oldLvalue, lvalue));
  }

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

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public NotificationChain basicSetExp(Expression newExp, NotificationChain msgs)
  {
    Expression oldExp = exp;
    exp = newExp;
    if (eNotificationRequired())
    {
      ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, UrmlPackage.ASSIGNMENT__EXP, oldExp, newExp);
      if (msgs == null) msgs = notification; else msgs.add(notification);
    }
    return msgs;
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public void setExp(Expression newExp)
  {
    if (newExp != exp)
    {
      NotificationChain msgs = null;
      if (exp != null)
        msgs = ((InternalEObject)exp).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - UrmlPackage.ASSIGNMENT__EXP, null, msgs);
      if (newExp != null)
        msgs = ((InternalEObject)newExp).eInverseAdd(this, EOPPOSITE_FEATURE_BASE - UrmlPackage.ASSIGNMENT__EXP, null, msgs);
      msgs = basicSetExp(newExp, msgs);
      if (msgs != null) msgs.dispatch();
    }
    else if (eNotificationRequired())
      eNotify(new ENotificationImpl(this, Notification.SET, UrmlPackage.ASSIGNMENT__EXP, newExp, newExp));
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, NotificationChain msgs)
  {
    switch (featureID)
    {
      case UrmlPackage.ASSIGNMENT__EXP:
        return basicSetExp(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 UrmlPackage.ASSIGNMENT__LVALUE:
        if (resolve) return getLvalue();
        return basicGetLvalue();
      case UrmlPackage.ASSIGNMENT__EXP:
        return getExp();
    }
    return super.eGet(featureID, resolve, coreType);
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public void eSet(int featureID, Object newValue)
  {
    switch (featureID)
    {
      case UrmlPackage.ASSIGNMENT__LVALUE:
        setLvalue((Assignable)newValue);
        return;
      case UrmlPackage.ASSIGNMENT__EXP:
        setExp((Expression)newValue);
        return;
    }
    super.eSet(featureID, newValue);
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public void eUnset(int featureID)
  {
    switch (featureID)
    {
      case UrmlPackage.ASSIGNMENT__LVALUE:
        setLvalue((Assignable)null);
        return;
      case UrmlPackage.ASSIGNMENT__EXP:
        setExp((Expression)null);
        return;
    }
    super.eUnset(featureID);
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public boolean eIsSet(int featureID)
  {
    switch (featureID)
    {
      case UrmlPackage.ASSIGNMENT__LVALUE:
        return lvalue != null;
      case UrmlPackage.ASSIGNMENT__EXP:
        return exp != null;
    }
    return super.eIsSet(featureID);
  }

} //AssignmentImpl
