[fpc-devel] [] property overloads

[Michael Van Canneyt]

On Sat, 6 Jul 2019, Ryan Joseph wrote:

> Sorry to ask again but has it been decided that this code should *not* be allowed for ObjFPC mode? I’ll file a bug report right now if so. It will break existing code but when my patch gets applied it can be added back using proper properties.
>
>      function GetValue(k0: variant): TJSON; overload;
>      function GetValue(k0,k1: variant): TJSON; overload;
>      function GetValue(k0,k1,k2: variant): TJSON; overload;
>      function GetValue(k0,k1,k2,k3: variant): TJSON; overload;
>      property Values[key: variant]: TJSON read GetValue; default;

Why should this declaration not be allowed ?

Only the first GetValue() should be called, of course.

i.e. statement 1:
A:=Values[MyVariant]
must work

but e.g. statement 2:
A:=Values[MyVariant1,MyVariant2]
must not work.

Only if overloaded array properties are allowed
    property Values[key: variant]: TJSON read GetValue; default;
    property Values[key1,key2: variant]: TJSON read GetValue; default;
may the second statement be accepted.

Michael.