Interfaces are working in SpiderBasic and it is possible in C as well.StarBootics wrote:I'm not asking it it will be needed or not. What I'm asking is if it will be possible otherwise 100 000 lines (maybe more) will simply go to waste. That's my point.
That good news. Now the only question I have left was about the C standard types including the unsigned long and unsigned long longDanilo wrote:Interfaces are working in SpiderBasic and it is possible in C as well.
It‘s just a struct with vtable with function pointers.
)Why the saddeness ? All PureBasic feature will be supported in the C backend unless proved to be impossible (which is very unlikely). For now, the current limitations are:StarBootics wrote:We have some questions and no answers yet
Please Fred ...
Best regards
StarBootics
I'm sure some people is using labels in the body of procedures or outside the data section anyway for many tricks or extensions. I'm one of them, I have at least two uses probably more, one is a sort of poor man try/catch and I've used it extensively.Fred wrote: - no label address (?LabelName) outside of Datasection (could be resolved somewhen, not sure if it worths it).
The sadness was due to the fact that big changes into a programming language such as the new C Backend can mean big changes into the language it self. I remember when changes in the language in the earlier version of PureBasic (the introduction of Modules for example) was literally a game changer but it also means that the good old ways of writing code as to change as well. I'm not afraid of change, what I'm afraid is regressions.Fred wrote:Why the saddeness ? All PureBasic feature will be supported in the C backend unless proved to be impossible (which is very unlikely). For now, the current limitations are:
- no level to 'Break' (should be resolved somewhen)
- no Gosub (should be resolved soon)
- no label address (?LabelName) outside of Datasection (could be resolved somewhen, not sure if it worths it).
Then that pretty much it, all common stuffs like prototype, interface etc works indeed.
And again: we DON'T plan to drop the current asm backend, plain and simple.
Why aren't you using goto?Fred wrote:no level to 'Break' (should be resolved somewhen)
Code: Select all
for (uint8_t i=0; i<10; i++)
{
for (uint8_t x=1; x<100; i++)
{
goto break2; // This Bkeak 2 in PB.
}
}
break2:;Why? GCC allows you to find out the address of the label.Fred wrote:no label address (?LabelName) outside of Datasection (could be resolved somewhen, not sure if it worths it).
Write what difficulties have arisen. It may be possible to find a solution.Fred wrote:no Gosub (should be resolved soon)
Hopefully this can be resolved as soon as possible, rather than sometime in the future. It's a major feature to have a Break level, and without this it will ruin a lot of nested loops that currently depend on it. Until this is resolved, I won't even be able to begin testing any new betas because a few of my loops have "Break 2" and "Break 3" in the same processing code.Fred wrote:- no level to 'Break' (should be resolved somewhen)
Yes, I have many nested loops that Break 2, but no Break 3 as yet.BarryG wrote:Hopefully this can be resolved as soon as possible, rather than sometime in the future. It's a major feature to have a Break level, and without this it will ruin a lot of nested loops that currently depend on it. Until this is resolved, I won't even be able to begin testing any new betas because a few of my loops have "Break 2" and "Break 3" in the same processing code.Fred wrote:- no level to 'Break' (should be resolved somewhen)
It's the plan, it's just not implemented yet.User_Russian wrote:Why aren't you using goto?
Bkeak 2 can be translated like this in C.Code: Select all
for (uint8_t i=0; i<10; i++) { for (uint8_t x=1; x<100; i++) { goto break2; // This Bkeak 2 in PB. } } break2:;
I know, but it's GCC specific and I would like to avoid this to be able to use other compiler as well. If I get no other choices we could be tied to GCC, but I want to explore all possibilities.User_Russian wrote:Why? GCC allows you to find out the address of the label.Fred wrote:no label address (?LabelName) outside of Datasection (could be resolved somewhen, not sure if it worths it).
See this screenshot.
The label is located at address 0x2000030E and the variable has the same value. Everything works fine.Write what difficulties have arisen. It may be possible to find a solution.Fred wrote:no Gosub (should be resolved soon)
Code: Select all
For i=1 To 10000
For ii=1 To 10000
If ii=5000
; Break 2
Goto finish
EndIf
Next ii
Next i
finish:
Debug "Finished "+ii
Code: Select all
repeat
For i=1 To 10000
For ii=1 To 10000
If ii=5000
; Break 2
Goto finish
EndIf
Next ii
Next i
finish:
forever
It can be elegant, but if one of the exit conditions is only combined with a handful of other specific conditions (i.e. nested deep in some IF's), placing that whole pile into the conditional loop test can be ugly, confusing, and slower since the condition is tested with every iteration... And is no longer elegant.TI-994A wrote:Conditional While/Wend and Repeat/Until loops could easily and elegantly replace multi-level breaks.