public static bool TryGetCustomClassMapping(IEnumerable <string> sourceParameters, out ICollection <KeyValuePair <string, string> > customMapping, out string errorMessage)
{
customMapping = new List <KeyValuePair <string, string> >();
foreach (var parameter in sourceParameters ?? Enumerable.Empty <string>())
{
var parts = parameter.Split(':');
if (parts.Length != 2)
{
errorMessage = "\"classMapping\" value must have format {GraphQlTypeName}:{C#ClassName}. ";
return(false);
}
var cSharpClassName = parts[1];
if (!CSharpHelper.IsValidIdentifier(cSharpClassName))
{
errorMessage = $"\"{cSharpClassName}\" is not valid C# class name. ";
return(false);
}
customMapping.Add(new KeyValuePair <string, string>(parts[0], cSharpClassName));
}
errorMessage = null;
return(true);
}