protected override void BeforeInsert(FunctionBinding binding)
{
// TODO: Ensure function does not have VOID return type.
// TODO: Ensure function does not have REF or OUT parameter.
List <FunctionBinding> functions;
if (!_functionTable.TryGetValue(binding.Name, out functions))
{
functions = new List <FunctionBinding>();
_functionTable.Add(binding.Name, functions);
}
else
{
// Check that no functions with the same parameter types already exists.
Type[] newParameterTypes = binding.GetParameterTypes();
foreach (FunctionBinding existingFunctionBinding in functions)
{
Type[] existingParameterTypes = existingFunctionBinding.GetParameterTypes();
if (newParameterTypes.Length == existingParameterTypes.Length)
{
// Assume they are the same
bool isSame = true;
// Check if any parameter type is different.
for (int i = 0; i < newParameterTypes.Length; i++)
{
if (newParameterTypes[i] != existingParameterTypes[i])
{
isSame = false;
break;
}
}
if (isSame)
{
throw ExceptionBuilder.FunctionWithSameNameAndSignatureAlreadyInCollection("binding", binding);
}
}
}
}
functions.Add(binding);
}