I've just opened it here: https://pharo.fogbugz.com/f/cases/13761/Fraction-floating-pointer-cannot-be-debugged 13761
2014-08-01 22:42 GMT+02:00 stepharo <[email protected]>: > could you add a bug entry with the discussion because else this will be > lost. > > Stef > > > On 1/8/14 17:58, Natalia Tymchuk wrote: > > Thank you. > I don’t need it, because I know what is written in my code, but it can be > the problem for users and I think that it will good to fix it. > Best regards, > Natalia > > On Aug 1, 2014, at 5:07 PM, Clément Bera <[email protected]> wrote: > > Hello, > > Natalia I don't think this is a known bug (few people use Float and > Fraction in Pharo). > > The RBParser parse your floating pointers as Fraction and not as Float > (I don't know why). > > In the debugger the bytecode pc to source code pointer is mapped by > printing the AST. In this case, the AST node (RBLiteralNode) for your float > holds a Fraction. The code to print a literal node is as follow: > > visitLiteralNode: aLiteralNode > aLiteralNode value isLiteral > ifFalse: [ self writeString: '''<an unprintable nonliteral value>''' ] > ifTrue: [ self writeString: aLiteralNode token storeString ] > > and isLiteral answers always false for a Fraction. > > A temporary patch consists in adding the method > > Fraction>>isLiteral > ^ true > > Then you can debug your code. > > However, I think a real patch would consists in adding the method > isLiteral in Fraction but with correct code to answer true only if the > fraction can be a literal. Something similar to Float>>#isLiteral. > > > 2014-08-01 15:40 GMT+02:00 Serge Stinckwich <[email protected]>: > >> Yes, I see also the same problem. >> >> I didn't realize until now that : 1-1e-6 >> is printed as a fraction (try print-it): >> (999999/1000000) >> >> A little bit strange, no ? >> >> On Fri, Aug 1, 2014 at 3:05 PM, Natalia Tymchuk >> <[email protected]> wrote: >> > Hello. >> > When I have the following expression >> > {1-1e-6. 1e-6. 0} >> > in the code and then I debug it I get >> > {(1 - '<an unprintable nonliteral value>'). >> > '<an unprintable nonliteral value>'. >> > 0}. >> > >> > Is it a known problem or should I report an issue on debug tracker? >> > >> > Best regards, >> > Natalia >> > >> >> >> >> -- >> Serge Stinckwich >> UCBN & UMI UMMISCO 209 (IRD/UPMC) >> Every DSL ends up being Smalltalk >> http://www.doesnotunderstand.org/ >> >> > > >
