/**
 * generated by Xtext 2.12.0
 */
package com.minres.rdl.rdl.impl;

import com.minres.rdl.rdl.Entity;
import com.minres.rdl.rdl.InstanceRef;
import com.minres.rdl.rdl.RdlPackage;

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

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Instance Ref</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * </p>
 * <ul>
 *   <li>{@link com.minres.rdl.rdl.impl.InstanceRefImpl#getInstance <em>Instance</em>}</li>
 *   <li>{@link com.minres.rdl.rdl.impl.InstanceRefImpl#getTail <em>Tail</em>}</li>
 * </ul>
 *
 * @generated
 */
public class InstanceRefImpl extends MinimalEObjectImpl.Container implements InstanceRef
{
  /**
   * The cached value of the '{@link #getInstance() <em>Instance</em>}' reference.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @see #getInstance()
   * @generated
   * @ordered
   */
  protected Entity instance;

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

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

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

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public Entity getInstance()
  {
    if (instance != null && instance.eIsProxy())
    {
      InternalEObject oldInstance = (InternalEObject)instance;
      instance = (Entity)eResolveProxy(oldInstance);
      if (instance != oldInstance)
      {
        if (eNotificationRequired())
          eNotify(new ENotificationImpl(this, Notification.RESOLVE, RdlPackage.INSTANCE_REF__INSTANCE, oldInstance, instance));
      }
    }
    return instance;
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public Entity basicGetInstance()
  {
    return instance;
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public void setInstance(Entity newInstance)
  {
    Entity oldInstance = instance;
    instance = newInstance;
    if (eNotificationRequired())
      eNotify(new ENotificationImpl(this, Notification.SET, RdlPackage.INSTANCE_REF__INSTANCE, oldInstance, instance));
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public InstanceRef getTail()
  {
    return tail;
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public NotificationChain basicSetTail(InstanceRef newTail, NotificationChain msgs)
  {
    InstanceRef oldTail = tail;
    tail = newTail;
    if (eNotificationRequired())
    {
      ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, RdlPackage.INSTANCE_REF__TAIL, oldTail, newTail);
      if (msgs == null) msgs = notification; else msgs.add(notification);
    }
    return msgs;
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public void setTail(InstanceRef newTail)
  {
    if (newTail != tail)
    {
      NotificationChain msgs = null;
      if (tail != null)
        msgs = ((InternalEObject)tail).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - RdlPackage.INSTANCE_REF__TAIL, null, msgs);
      if (newTail != null)
        msgs = ((InternalEObject)newTail).eInverseAdd(this, EOPPOSITE_FEATURE_BASE - RdlPackage.INSTANCE_REF__TAIL, null, msgs);
      msgs = basicSetTail(newTail, msgs);
      if (msgs != null) msgs.dispatch();
    }
    else if (eNotificationRequired())
      eNotify(new ENotificationImpl(this, Notification.SET, RdlPackage.INSTANCE_REF__TAIL, newTail, newTail));
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, NotificationChain msgs)
  {
    switch (featureID)
    {
      case RdlPackage.INSTANCE_REF__TAIL:
        return basicSetTail(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 RdlPackage.INSTANCE_REF__INSTANCE:
        if (resolve) return getInstance();
        return basicGetInstance();
      case RdlPackage.INSTANCE_REF__TAIL:
        return getTail();
    }
    return super.eGet(featureID, resolve, coreType);
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public void eSet(int featureID, Object newValue)
  {
    switch (featureID)
    {
      case RdlPackage.INSTANCE_REF__INSTANCE:
        setInstance((Entity)newValue);
        return;
      case RdlPackage.INSTANCE_REF__TAIL:
        setTail((InstanceRef)newValue);
        return;
    }
    super.eSet(featureID, newValue);
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public void eUnset(int featureID)
  {
    switch (featureID)
    {
      case RdlPackage.INSTANCE_REF__INSTANCE:
        setInstance((Entity)null);
        return;
      case RdlPackage.INSTANCE_REF__TAIL:
        setTail((InstanceRef)null);
        return;
    }
    super.eUnset(featureID);
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public boolean eIsSet(int featureID)
  {
    switch (featureID)
    {
      case RdlPackage.INSTANCE_REF__INSTANCE:
        return instance != null;
      case RdlPackage.INSTANCE_REF__TAIL:
        return tail != null;
    }
    return super.eIsSet(featureID);
  }

} //InstanceRefImpl
