/// <summary>
/// Checks that all arguments are SingleValueNodes
/// </summary>
/// <param name="functionName">The name of the function the arguments are from.</param>
/// <param name="argumentNodes">The arguments to validate.</param>
/// <returns>Returns the types of the arguments provided.</returns>
internal static IEdmTypeReference[] EnsureArgumentsAreSingleValue(string functionName, List <QueryNode> argumentNodes)
{
DebugUtils.CheckNoExternalCallers();
ExceptionUtils.CheckArgumentNotNull(functionName, "functionCallToken");
ExceptionUtils.CheckArgumentNotNull(argumentNodes, "argumentNodes");
// Right now all functions take a single value for all arguments
IEdmTypeReference[] argumentTypes = new IEdmTypeReference[argumentNodes.Count];
for (int i = 0; i < argumentNodes.Count; i++)
{
SingleValueNode argumentNode = argumentNodes[i] as SingleValueNode;
if (argumentNode == null)
{
throw new ODataException(ODataErrorStrings.MetadataBinder_FunctionArgumentNotSingleValue(functionName));
}
argumentTypes[i] = argumentNode.TypeReference;
}
return(argumentTypes);
}