protected internal override void CheckSemantics(AstHelper astHelper)
{
FunctionName.CheckSemantics(astHelper);
foreach (Expression expression in Parameters)
{
expression.CheckSemantics(astHelper);
}
Type[] parameterTypes = Parameters.Select(param => param.Type).ToArray();
if (!astHelper.Errors.Check(new FunctionNotDefinedError(FunctionName.Name, parameterTypes,
astHelper.Functions, Start)))
{
FunctionReference functionReference = astHelper.Functions[FunctionName.Name, parameterTypes];
_type = functionReference.ReturnType;
_pointer = functionReference.Function;
}
else
{
// if there is any error
_type = typeof(Null);
_pointer = MAst.Empty();
}
}