- Pharo-dev - lists.pharo.org

Re: [Pharo-project] Initial PetitC parser

by Javier PimÃ¡s

On Fri, Apr 8, 2011 at 1:08 PM, Alexandre Bergel <alexandre.bergel(a)me.com>wrote: > What is tricky with analyzing C are macros and preprocessors directive. > srcML does a satisfactory job. But indeed, having a solution based on > PetitParser is indeed promising. Yes, and I don't know what to do, and would like to know if you or someone else have any idea of how to solve it. I will think some approach, but if you have some idea to share it would be better so I go directly to a good solution. I'm thinking that to feed the parser I'll have to preprocess the string with another parser, and make a string to string conversion by having a set of defines and paths so that #includes and #ifdefs work. But probably I'll need a cache because the generated string will be huge. What do you think? Regards, Javier. > > Cheers, > Alexandre > > > On 7 Apr 2011, at 23:53, Javier PimÃ¡s wrote: > > > by the way, the grammar is based on > > > > http://www.quut.com/c/ANSI-C-grammar-l-1998.html > > > > and > > > > http://www.quut.com/c/ANSI-C-grammar-y.html > > > > I'd be very grateful if you contribute to cover the full extent of it! > > > > > > On Fri, Apr 8, 2011 at 12:37 AM, Javier PimÃ¡s < > elpochodelagente(a)gmail.com> wrote: > > Hi, > > I took some time to start developing a C parser with PetitParser. I > used the slides of the smalltalk school, they were pretty useful, and after > some hours I have a very basic tokens scanner. The idea of this work is to > be able to feed the parser with C headers and automagically get the C > bindings done in smalltalk. > > > > Now I have to actually start doing something with the scanned code. How > should I do that, all in the same class? What if I want to generate bindings > for different kinds of FFIs? Other question, how should I handle > preprocessing? (now there isn't any kind of preprocessing) > > > > You can see the code, download it and commit improvements to the repo at > www.squeaksource.com/Bindings > > > > Anybody who is interested is welcomed to help in the development! > > > > Regards, > > Javier. > > > > -- > > Javier PimÃ¡s > > Ciudad de Buenos Aires > > > > > > > > -- > > Javier PimÃ¡s > > Ciudad de Buenos Aires > > -- > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: > Alexandre Bergel http://www.bergel.eu > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > > > > > > > -- Javier PimÃ¡s Ciudad de Buenos Aires

April 8, 2011

Re: [Pharo-project] Unexpected behavior of roundTo:

by Hilaire Fernandes

It looks like a known issue: printShowingDecimalPlaces: placesDesired "This implementation avoids any rounding error caused by rounded or roundTo: " ^ self asTrueFraction printShowingDecimalPlaces: placesDesired Le 08/04/2011 18:47, Hilaire Fernandes a Ã©crit : > 2.8011416510246336 roundTo: 0.01 > > returns > > 2.8000000000000003 > > > Tested with 1.2 > > > Should I fill a ticket, I don't see anythings similar? > > Hilaire > -- Education 0.2 -- http://blog.ofset.org/hilaire

April 8, 2011

Re: [Pharo-project] Initial PetitC parser

by Javier PimÃ¡s

On Fri, Apr 8, 2011 at 3:41 AM, Tudor Girba <tudor.girba(a)gmail.com> wrote: > Hi Javier, > > On 8 Apr 2011, at 05:37, Javier PimÃ¡s wrote: > > > Hi, > > I took some time to start developing a C parser with PetitParser. I > used the slides of the smalltalk school, they were pretty useful, and after > some hours I have a very basic tokens scanner. The idea of this work is to > be able to feed the parser with C headers and automagically get the C > bindings done in smalltalk. > > > Nice. I took a quick look. If you want to scale, please write tests (one > small example per test). Grammars become complex and if you do not have > close to 100% coverage, you will get stuck. > > OK, I'll try. One question regarding PP: I started coding by looking at PPArithmeticParser, and noticed that for each sub-grammar you have a method and an instance named the same way, is that a requirement? If I don't add the instances this sub-grammars are not shown in the PPBrowser. Regards, Javier. Cheers, > Doru > > > > > Now I have to actually start doing something with the scanned code. How > should I do that, all in the same class? What if I want to generate bindings > for different kinds of FFIs? Other question, how should I handle > preprocessing? (now there isn't any kind of preprocessing) > > > > You can see the code, download it and commit improvements to the repo at > www.squeaksource.com/Bindings > > > > Anybody who is interested is welcomed to help in the development! > > > > Regards, > > Javier. > > > > -- > > Javier PimÃ¡s > > Ciudad de Buenos Aires > > -- > www.tudorgirba.com > > "Sometimes the best solution is not the best solution." > > > -- Javier PimÃ¡s Ciudad de Buenos Aires

April 8, 2011

[Pharo-project] Unexpected behavior of roundTo:

by Hilaire Fernandes

2.8011416510246336 roundTo: 0.01 returns 2.8000000000000003 Tested with 1.2 Should I fill a ticket, I don't see anythings similar? Hilaire -- Education 0.2 -- http://blog.ofset.org/hilaire

April 8, 2011

Re: [Pharo-project] Initial PetitC parser

by Javier PimÃ¡s

On Fri, Apr 8, 2011 at 2:05 AM, Ricardo Moran <richi.moran(a)gmail.com> wrote: > > On Fri, Apr 8, 2011 at 12:37 AM, Javier PimÃ¡s <elpochodelagente(a)gmail.com>wrote: > >> Hi, >> I took some time to start developing a C parser with PetitParser. I >> used the slides of the smalltalk school, they were pretty useful, and after >> some hours I have a very basic tokens scanner. The idea of this work is to >> be able to feed the parser with C headers and automagically get the C >> bindings done in smalltalk. >> >> > Hi Javier, > > That's a great project and I'm highly interested in it. I'm not experienced > in PetitParser so I won't be a lot of help, but I'll give it a try. > excelent > > >> Now I have to actually start doing something with the scanned code. How >> should I do that, all in the same class? What if I want to generate bindings >> for different kinds of FFIs? Other question, how should I handle >> preprocessing? (now there isn't any kind of preprocessing) >> > > Maybe you already thought of this but what if you make your parser build > some simple C AST and then you make specific visitors for each kind of FFI? > I didn't think of it because I never did a parser before and have no experience with PP. Is it the clean way to do it? How is that implented? maybe have for each expression in the bnf a class that represents it, and make PP create the instances? > Cheers > Richo > > >> >> You can see the code, download it and commit improvements to the repo at >> www.squeaksource.com/Bindings >> >> Anybody who is interested is welcomed to help in the development! >> >> Regards, >> Javier. >> >> -- >> Javier PimÃ¡s >> Ciudad de Buenos Aires >> > > -- Javier PimÃ¡s Ciudad de Buenos Aires

April 8, 2011

Re: [Pharo-project] Initial PetitC parser

by Alexandre Bergel

What is tricky with analyzing C are macros and preprocessors directive. srcML does a satisfactory job. But indeed, having a solution based on PetitParser is indeed promising. Cheers, Alexandre On 7 Apr 2011, at 23:53, Javier PimÃ¡s wrote: > by the way, the grammar is based on > > http://www.quut.com/c/ANSI-C-grammar-l-1998.html > > and > > http://www.quut.com/c/ANSI-C-grammar-y.html > > I'd be very grateful if you contribute to cover the full extent of it! > > > On Fri, Apr 8, 2011 at 12:37 AM, Javier PimÃ¡s <elpochodelagente(a)gmail.com> wrote: > Hi, > I took some time to start developing a C parser with PetitParser. I used the slides of the smalltalk school, they were pretty useful, and after some hours I have a very basic tokens scanner. The idea of this work is to be able to feed the parser with C headers and automagically get the C bindings done in smalltalk. > > Now I have to actually start doing something with the scanned code. How should I do that, all in the same class? What if I want to generate bindings for different kinds of FFIs? Other question, how should I handle preprocessing? (now there isn't any kind of preprocessing) > > You can see the code, download it and commit improvements to the repo at www.squeaksource.com/Bindings > > Anybody who is interested is welcomed to help in the development! > > Regards, > Javier. > > -- > Javier PimÃ¡s > Ciudad de Buenos Aires > > > > -- > Javier PimÃ¡s > Ciudad de Buenos Aires -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

April 8, 2011

Re: [Pharo-project] [COTDC] 45 - TestCoverage

by Alexandre Bergel

Is this class work with Cog? Alexandre On 8 Apr 2011, at 10:53, laurent laffont wrote: > Today: TestCoverage > > > Comment Of The Day Contest - One Day One Comment > Rules: > #1: Each day a not commented class is elected. Each day the best comment will be integrated with name of the author(s). > #2: If you cannot comment it, deprecate it. > Results: http://code.google.com/p/pharo/wiki/CommentOfTheDayContest > > Laurent -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

April 8, 2011

Re: [Pharo-project] Issue 3971 in pharo: OBSystemBrowserAdaptor does not correctly find classes

by pharo＠googlecode.com

Comment #2 on issue 3971 by DougEdmu...(a)gmail.com: OBSystemBrowserAdaptor does not correctly find classes http://code.google.com/p/pharo/issues/detail?id=3971 A substring starts at a specified character position and has a specified length. The characters that form a substring are contiguous. "heat" is a substring of "theater", as is "the" and "ate". "tear" is not a substring is not a substring. http://msdn.microsoft.com/en-us/library/system.string.substring.aspx http://www.w3schools.com/jsref/jsref_substring.asp Call it a 'feature' if you insist, but don't call it a substring. Personally it may as well be an anagram.

April 8, 2011

Re: [Pharo-project] [Vm-dev] FW: Debugging Cog crash

by Schwab,Wilhelm K

Levente, The image will not load at all. It simply dies with "Segmentation fault" - NOTHING else happens. gdb is maybe a possibility, but it is not an approach I ordinarily take, so some guidance would be helpful. I have a reproducible crash, but poor access to the affected box. Bill On Fri, 8 Apr 2011, Schwab,Wilhelm K wrote: > > Gratuitous default recipient... > > If there is a verbose dump option or other diagnostic efforts that will help, I will do my best to run them and report the results. I am fairly certain the vm is 'Croquet Closure Cog VM [CoInterpreter VMMaker-oscog.54]' (can verify later today), but this happened with an earlier Cog one-click too. There is something about the machine (UUID again?) that is different. I do not have root access to it, but I can get to a terminal. Ubuntu 10.10. Where did you download the VM? Does it crash when you're trying to evaluate [UUID new]? Did you try gdb? Levente ________________________________________ From: pharo-project-bounces(a)lists.gforge.inria.fr [pharo-project-bounces(a)lists.gforge.inria.fr] On Behalf Of Schwab,Wilhelm K [bschwab(a)anest.ufl.edu] Sent: Friday, April 08, 2011 11:42 AM To: Pharo-project(a)lists.gforge.inria.fr; Squeak Virtual Machine Development Discussion Subject: Re: [Pharo-project] [Vm-dev] FW: Debugging Cog crash Dave, It was, I did :) No help :( What else can I try? Bill ________________________________________ From: pharo-project-bounces(a)lists.gforge.inria.fr [pharo-project-bounces(a)lists.gforge.inria.fr] On Behalf Of David T. Lewis [lewis(a)mail.msen.com] Sent: Friday, April 08, 2011 10:32 AM To: Squeak Virtual Machine Development Discussion Cc: Pharo-project(a)lists.gforge.inria.fr Subject: Re: [Pharo-project] [Vm-dev] FW: Debugging Cog crash Yes, the libuuid.so bug would be a likely suspect. If the UUIDPlugin was built as an external library, just delete it and you will probably be good to go. If you need further info, look here: http://bugs.squeak.org/view.php?id=7358 Dave On Fri, Apr 08, 2011 at 07:58:39AM -0400, Schwab,Wilhelm K wrote: > > Gratuitous default recipient... > > If there is a verbose dump option or other diagnostic efforts that will help, I will do my best to run them and report the results. I am fairly certain the vm is 'Croquet Closure Cog VM [CoInterpreter VMMaker-oscog.54]' (can verify later today), but this happened with an earlier Cog one-click too. There is something about the machine (UUID again?) that is different. I do not have root access to it, but I can get to a terminal. Ubuntu 10.10. > > > ________________________________________ > From: Schwab,Wilhelm K > Sent: Friday, April 08, 2011 7:44 AM > To: Mariano Martinez Peck > Subject: RE: [Pharo-project] Debugging Cog crash > > Mariano, > > I first identified this problem/opportunity a while ago. At the time, there was no log - the vm just died. I can sniff around again as there might be one this time. My question at the time was whether there was something that I could enable to perhaps get more info. > > The output from the vm is, and I quote<g> "Segmentation fault". There is no other output. Perhaps it does not get far enough to have a call stack?? > > Bill > > > > ________________________________________ > From: Mariano Martinez Peck [marianopeck(a)gmail.com] > Sent: Friday, April 08, 2011 3:42 AM > To: Squeak Development Discussion Virtual Machine; Pharo Development > Cc: Schwab,Wilhelm K > Subject: Re: [Pharo-project] Debugging Cog crash > > also...shouldn't be a crash/dump file somewhere? > > can you write the output of the console where you invoke the VM into a file ? (using > to redirect) > > Cheers > > Mariano > > On Thu, Apr 7, 2011 at 11:10 PM, Schwab,Wilhelm K <bschwab(a)anest.ufl.edu<mailto:bschwab@anest.ufl.edu>> wrote: > Hello all, > > I have an account on an Ubuntu terminal server (at least I think that's what it would be called) running 10.10. The Cog one-click image crashes with "Segmentation fault" (if run from a terminal); the legacy VM seems to run the image nicely on the box. Any ideas? I will happily collect any facts that will be of help, but I need some > direction. > > Bill > > > > > > > -- > Mariano > http://marianopeck.wordpress.com

April 8, 2011

[Pharo-project] Issue 3976 in pharo: Fix double entry Apperance in Settings

by pharo＠googlecode.com

Status: FixToInclude Owner: marcus.d...(a)gmail.com Labels: Milestone-1.3 New issue 3976 by marcus.d...(a)gmail.com: Fix double entry Apperance in Settings http://code.google.com/p/pharo/issues/detail?id=3976 Fix double entry Apperance in Settings Attachments: DoubleAppearanceMenuFix.1.cs 165 bytes

April 8, 2011