/// <summary>
/// Visit an <see cref="InputReferenceExpression"/>, producing a new InputReferenceExpression
/// based on the visited form of the <see cref="QueryableResourceExpression"/> that is referenced by
/// the InputReferenceExpression argument, <paramref name="ire"/>.
/// </summary>
/// <param name="ire">InputReferenceExpression expression to visit</param>
/// <returns>Visited InputReferenceExpression expression</returns>
internal virtual Expression VisitInputReferenceExpression(InputReferenceExpression ire)
{
Debug.Assert(ire != null, "ire != null -- otherwise caller never should have visited here");
ResourceExpression re = (ResourceExpression)this.Visit(ire.Target);
return(re.CreateReference());
}
/// <summary>
/// Returns an <see cref="InputReferenceExpression"/> that references the specified resource,
/// and also adds the the resource to the hashset of resources that were referenced by the
/// expression that is being rebound.
/// </summary>
/// <param name="resource">The resource for which a reference was found</param>
/// <returns>An InputReferenceExpression that represents a reference to the specified resource</returns>
private Expression CreateReference(ResourceExpression resource)
{
this.referencedInputs.Add(resource);
return(resource.CreateReference());
}
/// <summary>
/// Returns an <see cref="InputReferenceExpression"/> that references the specified resource,
/// and also adds the the resource to the hashset of resources that were referenced by the
/// expression that is being rebound.
/// </summary>
/// <param name="resource">The resource for which a reference was found</param>
/// <returns>An InputReferenceExpression that represents a reference to the specified resource</returns>
private Expression CreateReference(ResourceExpression resource)
{
this.referencedInputs.Add(resource);
return resource.CreateReference();
}
