I’m moving my technical questions about default properties here so I don’t
clutter up the other list. I’m still new to the compiler please bear with me.
The first problem I’m having is how to resolve duplicate functions with
overloads. For example in TWrapper there’s multiple overloads for DoThis and we
need to determine if TWrapper.DoThis should use TWrapper or the THelperA from
the default property.
type
THelperA = record
procedure DoThis;
end;
type
TWrapper = record
objA: THelperA;
property helperA: THelperA read objA write objA; default;
procedure DoThis(param: integer); overload;
procedure DoThis(param: string); overload;
end;
var
wrapper: TWrapper;
begin
wrapper.DoThis(1); // DoThis is from TWrapper but how can we
determine this?
What I’m narrowing in on is:
in pexpr.pas do_member_read() takes the load node and converts it to a call
node and this is where I need to determine what definition the function belongs
to. So in the example above we get “DoThis” how can we determine if TWrapper or
THelperA has a matching function with matching parameters? searchsym_in_record
usually returns the correct definition but I need to scan 2 possible
definitions instead of just the first one specified in the load node.
do_proc_call() parses parameters into a tcallparanode which is good.
do_typecheckpass on the tcallnode from do_proc_call() will find procsym
candidates in the record def which the node was created with. I would use this
to query but it forces a syntax error which isn’t what I want.
Hopefully that makes sense. So my question is, is there an existing way to
search a tabstractrecorddef given a name and parameter list and return a found
or not found answer? I could start pulling stuff out of do_typecheckpass() but
I suspect there’s already a way to do this.
Regards,
Ryan Joseph
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