DaWorm schrieb:
Perhaps a little extra compiler magic could be used? If the base
definition of a string (the hidden stuff before the data) contains not
only a field with the encoding, but a flag indicating the disposition of
the encoding, then when a string type is aliases, that disposition could
be overridden. I'm on my phone, so this may be hard to show an example:
type String = record
encoding: TEncoding;
disposition: Tdisposition;
data: Tbytes;
end;
That's not easily feasable, as long as empty strings are implemented as
Nil pointers. When reference counting etc. should be preserved, the
additional information had to be moved into an static string descriptor,
together with the pointer to the dynamic string content. And what about
temporary strings, used in string expressions?
I don't think that an added "disposition" will improve anything, because
its value has to be checked with every access to a string variable. With
strictly typed strings (of fixed encoding) all checks can be performed
at compile time.
DoDi
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