/// <summary>Creates an exception to be used when CheckCompatibleAssignment fails.</summary>
/// <param name="targetType">Type being initialized.</param>
/// <param name="previous">Previously seen member accesses.</param>
/// <param name="candidate">Member assignments under evaluate.</param>
/// <returns>A new exception with diagnostic information.</returns>
private static Exception CheckCompatibleAssignmentsFail(Type targetType, Expression[] previous, Expression[] candidate)
{
Debug.Assert(targetType != null, "targetType != null");
Debug.Assert(previous != null, "previous != null");
Debug.Assert(candidate != null, "candidate != null");
string message = Strings.ALinq_ProjectionMemberAssignmentMismatch(targetType.FullName, previous.LastOrDefault(), candidate.LastOrDefault());
return(new NotSupportedException(message));
}