January 2015 - Pharo-users - lists.pharo.org

Re: [Pharo-users] SPEC and Athens

by Mark Rizun

I have the same problem with PolygonMorph. It does not resize properly. Also I couldn't find any event related with window resizing. If you find a solution please let me know. Mark 2015-01-28 16:19 GMT+01:00 Sebastian Heidbrink <sheidev(a)yahoo.de>: > Am 28.01.2015 um 07:07 schrieb Mark Rizun: > > First the svg does not resive properly while resizing the window. >> > > What do you mean by this? > > > Well, I implemented the example window from spec.st and added a ASVGMorph > to it. > When I now resize the window, then the button changes his size correctly > but the svg somhow just seems to be put into the background. > I then implemented a SVGMorpModel that includes a ASVGMorpAdapter and adde > dthis one to my example window but the result is that the SVG resizes just > half the speed... > > > > >> How can I also introduce an animated SVG? Like an svg that changes >> color during a mouse click? >> > > To work with events that are implemented in AthensSvgMorph you have to > (as far as I know) access this morph. > You can do it by sending #widget message to your model to times like this: > > svgModel widget widget ==> svgMorph > > Than morph can handle events like "changes color during a mouse click". > > >> Are there any particular Models that could be used as a container for >> this SVGMorphAdapter? >> > > SVGMorphAdapter is a class that represents a layer betwen SVGMorph and > model of svg in spec. > It allows model and morph to "communicate" with each other. > > Mark > > >

Jan. 28, 2015

Re: [Pharo-users] SPEC and Athens

by Sebastian Heidbrink

Am 28.01.2015 um 07:07 schrieb Mark Rizun: > > First the svg does not resive properly while resizing the window. > > > What do you mean by this? Well, I implemented the example window from spec.st and added a ASVGMorph to it. When I now resize the window, then the button changes his size correctly but the svg somhow just seems to be put into the background. I then implemented a SVGMorpModel that includes a ASVGMorpAdapter and adde dthis one to my example window but the result is that the SVG resizes just half the speed... > How can I also introduce an animated SVG? Like an svg that changes > color during a mouse click? > > > To work with events that are implemented in AthensSvgMorph you have to > (as far as I know) access this morph. > You can do it by sending #widget message to your model to times like this: > > svgModel widget widget ==> svgMorph > > Than morph can handle events like "changes color during a mouse click". > > Are there any particular Models that could be used as a container > for this SVGMorphAdapter? > > > SVGMorphAdapter is a class that represents a layer betwen SVGMorph > and model of svg in spec. > It allows model and morph to "communicate" with each other. > > Mark

Jan. 28, 2015

Compatibility of Cypress, FileTree, STIG ?

by Damien Pollet

Hi all, I'm trying to exchange code between VW and Pharo, but STIG does not seem to generate the same properties, and puts comment at the start of method files instead of the method category name, which confuses FileTree on the Pharo end. Any suggestions? -- Damien Pollet type less, do more [ | ] http://people.untyped.org/damien.pollet

Jan. 28, 2015

Re: [Pharo-users] SPEC and Athens

by Mark Rizun

> > First the svg does not resive properly while resizing the window. > What do you mean by this? > How can I also introduce an animated SVG? Like an svg that changes color > during a mouse click? > To work with events that are implemented in AthensSvgMorph you have to (as far as I know) access this morph. You can do it by sending #widget message to your model to times like this: svgModel widget widget ==> svgMorph Than morph can handle events like "changes color during a mouse click". > Are there any particular Models that could be used as a container for this > SVGMorphAdapter? > SVGMorphAdapter is a class that represents a layer betwen SVGMorph and model of svg in spec. It allows model and morph to "communicate" with each other. Mark

Jan. 28, 2015

Re: [Pharo-users] SPEC and Athens

by Sebastian Heidbrink

Hi Mark, that works! Thanks! But I still hava a problem here. First the svg does not resive properly while resizing the window. The svg is part of a ComposibleModel How can I also introduce an animated SVG? Like an svg that changes color during a mouse click? Are there any particular Models that could be used as a container for this SVGMorphAdapter? I saw a project that added such funktionalities to SVGs like animations within Pharo, but I can't find it anymore. I assume that's why it wasn't continued? Thanks Sebastian Am 27.01.2015 um 08:02 schrieb Mark Rizun: > Hi, > > Not sure if it helps but for morphs you have next "transformation to > model": > > || morph| > > morph := CalendarMorph on: Date today. > ^ morph asSpecAdapter| > > Please read details here: > http://spec.st/docs/insert-morph/ > > Mark > > 2015-01-27 16:57 GMT+01:00 Sebastian Heidbrink <sheidev(a)yahoo.de > <mailto:sheidev@yahoo.de>>: > > Hi! > > Okay so I am currently trying Spec out and I need some advice. > > Which is the Model to use for a ASVGMorph ("AthensSvgMorph")? > > Is there an example availabel somewhere? > > Thanks > Sebastian > >

Jan. 28, 2015

Re: [Pharo-users] SmaCC: First steps

by kilon alios

"Ok. I made sure the help was up to date with the current SmaCC; the online tutorial may differ a bit (GUI, some of the class creation commands)." Yes I am not complaining about your effort. I am just new with parsing and everything looks alien to me :D I am mostly following your documentation inside pharo but I dont mind reading anything available. "Scanners divide the input stream in tokens with regular expressions." ok so regular expressions are used, good I am familiar with them because already used them to parse pharo messages to python method calls. At least I know something useful :) "If you give new classes, it will create them. If you give existing classes, it will reuse them." Ok so creating classes for parser an scanner is only optional. That mean that those classes can do some extra work that is not defined with the SmaCC syntax. "This is the issue I told you about in Pharo 4. The fix is waiting for review before integration (https://pharo.fogbugz.com/default.asp?14730)" Ah yes now I remember, I could review it I am a member of pharo fogbuz but I am clueless of how it works and what it affects so maybe I am not a good reviewer in this case. "With the PythonParser, you get a visitor generated, so you can subclass it and visit the ast produced by the parser and generate the relevant OrderedCollections." Roger so that means I will have to take a deep look into PythonParser class and try to figure things out. "It means or." I assumed so , but I wanted to make sure. "I don't have any at hand: I teach that at the moment, so I'm not delegating to a tutorial for my students ;)" I was not aware that you are a teacher and that you teach SmaCC , cool. So I think I will try to put more effort to reading the tutorial and experimenting with Pharo 3 till Pharo 4 is fixed. "The way it is set should support you well for doing what you want, so keep doing it :)" Great if you say I can do this , this is already great news for me. The effort is not a problem , no pain no gain. I will be back with more questions.

Jan. 28, 2015

Re: [Pharo-users] SmaCC: First steps

by kilon alios

Yes I am aware of PettitParser but the one thing that made me very interested into SmaCC is that it already supports Python syntax parsing , though I think is for Python 2 but if its 2.7 it wont be much issue for me that use Python 3.4 syntax. >From a first look it looks PettitParser easier to use but Thiery told me SmaCC is also fairly easy and personally I dont care so much I only want something that gets the job done as fast as possible. Having an existing python parser certainly makes things faster for me. But yes I have played around with pettitparser and I really liked it. On Wed, Jan 28, 2015 at 4:22 PM, Johan Fabry <jfabry(a)dcc.uchile.cl> wrote: > Hi Kilon, > > I think itâs better that you take a look at PetitParser (e.g. > http://www.themoosebook.org/book/internals/petit-parser ) I have found > PetitParser more user friendly than SmaCC. > > > On Jan 28, 2015, at 14:53, kilon alios <kilon.alios(a)gmail.com> wrote: > > Ok I have read a few times of the tutorial of Smacc in here > http://www.refactoryworkers.com/SmaCC/ASTs.html > > and I am also following the help tool documentation inside pharo for SmaCC > and I have to say I am very confused. Please bare with me because I am > extremely noob when it comes to parsing, this is my first effort. > > Now the way I understand it so far, is that SmaCC uses a syntax similar to > regex expressions to define parsers and scanners. Scanners evaluate a > string to see that it contains a valid form and parser divide to parts > named as "tokens" and help in the creating of ASTs which are basically > hierarchy tree containing the syntax elements of a language. > > Now in order to make SmaCC work I need to use the SmaCC tool that comes > with pharo . The smacc tool takes two inputs a scanner and a parser class. > Does that mean I need to create that parser and scanner class ? I thought > since I define the syntax that those things would be generated by the tool. > > What I need to define exactly ? > > Why when I select the PythonScanner2 and PythonParser2 and click then > Compile LR it gives a MNU receiver of method is nil ? > > I am using latest Pharo 4 image. > > My goal is to parse python types to similar pharo objects. I get those > python types as strings and my main focus in lists, dictionaries and tuples > . The tricky part is that one can contain the other inside in every > imagined way. > > The way I understand it I will need something called "transformations" to > convert those python types to OrderedCollections, Arrays etc and anything > would make more sense for a pharo coder. > > Additionally what is the meaning of the vertibal bar ? --> | > eg. > | Number > > Are there any other tutorials that can help a beginner like me to > understand these concepts ? > > I am not looking for someone to give me the solution to the plate, I would > love to learn and understand parsing because I am very interested into > making Pharo easy to mix with Python code and allow Pharo to use Python > libraries without the user having to learn or code Python :) > > As you may imagine this is a crucial ingredient for my project Ephestos > which tries to use Pharo to script Blender by either replacing or > cooperating with blender python. So learning a good way to parse pharo code > to python code and vice versa is extremely important for me. > > > > > ---> Save our in-boxes! http://emailcharter.org <--- > > Johan Fabry - http://pleiad.cl/~jfabry > PLEIAD lab - Computer Science Department (DCC) - University of Chile > >

Jan. 28, 2015

Re: [Pharo-users] SmaCC: First steps

by Thierry Goubier

2015-01-28 14:53 GMT+01:00 kilon alios <kilon.alios(a)gmail.com>: > Ok I have read a few times of the tutorial of Smacc in here > http://www.refactoryworkers.com/SmaCC/ASTs.html > > and I am also following the help tool documentation inside pharo for SmaCC > and I have to say I am very confused. Please bare with me because I am > extremely noob when it comes to parsing, this is my first effort. > Ok. I made sure the help was up to date with the current SmaCC; the online tutorial may differ a bit (GUI, some of the class creation commands). > > Now the way I understand it so far, is that SmaCC uses a syntax similar to > regex expressions to define parsers and scanners. Scanners evaluate a > string to see that it contains a valid form and parser divide to parts > named as "tokens" and help in the creating of ASTs which are basically > hierarchy tree containing the syntax elements of a language. > Scanners divide the input stream in tokens with regular expressions. Parsers builds (sort of: at least they follow the steps) a tree (a parse tree) out of the tokens, parse tree which is reduced and simplified as an AST. And the AST represent the structure of the source code (as per the language definition in the grammar) > > Now in order to make SmaCC work I need to use the SmaCC tool that comes > with pharo . The smacc tool takes two inputs a scanner and a parser class. > Does that mean I need to create that parser and scanner class ? I thought > since I define the syntax that those things would be generated by the tool. > If you give new classes, it will create them. If you give existing classes, it will reuse them. > What I need to define exactly ? > > Why when I select the PythonScanner2 and PythonParser2 and click then > Compile LR it gives a MNU receiver of method is nil ? > This is the issue I told you about in Pharo 4. The fix is waiting for review before integration (https://pharo.fogbugz.com/default.asp?14730) > > I am using latest Pharo 4 image. > > My goal is to parse python types to similar pharo objects. I get those > python types as strings and my main focus in lists, dictionaries and tuples > . The tricky part is that one can contain the other inside in every > imagined way. > > The way I understand it I will need something called "transformations" to > convert those python types to OrderedCollections, Arrays etc and anything > would make more sense for a pharo coder. > With the PythonParser, you get a visitor generated, so you can subclass it and visit the ast produced by the parser and generate the relevant OrderedCollections. > > Additionally what is the meaning of the vertibal bar ? --> | > eg. > | Number > It means or. For example, Atom: | Number ; Would mean that Atom is either empty or a number. > > Are there any other tutorials that can help a beginner like me to > understand these concepts ? > I don't have any at hand: I teach that at the moment, so I'm not delegating to a tutorial for my students ;) > > I am not looking for someone to give me the solution to the plate, I would > love to learn and understand parsing because I am very interested into > making Pharo easy to mix with Python code and allow Pharo to use Python > libraries without the user having to learn or code Python :) > > As you may imagine this is a crucial ingredient for my project Ephestos > which tries to use Pharo to script Blender by either replacing or > cooperating with blender python. So learning a good way to parse pharo code > to python code and vice versa is extremely important for me. > The way it is set should support you well for doing what you want, so keep doing it :) Thierry

Jan. 28, 2015

Re: [Pharo-users] SmaCC: First steps

by Johan Fabry

Hi Kilon, I think itâs better that you take a look at PetitParser (e.g. http://www.themoosebook.org/book/internals/petit-parser <http://www.themoosebook.org/book/internals/petit-parser> ) I have found PetitParser more user friendly than SmaCC. > On Jan 28, 2015, at 14:53, kilon alios <kilon.alios(a)gmail.com> wrote: > > Ok I have read a few times of the tutorial of Smacc in here http://www.refactoryworkers.com/SmaCC/ASTs.html <http://www.refactoryworkers.com/SmaCC/ASTs.html> > > and I am also following the help tool documentation inside pharo for SmaCC and I have to say I am very confused. Please bare with me because I am extremely noob when it comes to parsing, this is my first effort. > > Now the way I understand it so far, is that SmaCC uses a syntax similar to regex expressions to define parsers and scanners. Scanners evaluate a string to see that it contains a valid form and parser divide to parts named as "tokens" and help in the creating of ASTs which are basically hierarchy tree containing the syntax elements of a language. > > Now in order to make SmaCC work I need to use the SmaCC tool that comes with pharo . The smacc tool takes two inputs a scanner and a parser class. Does that mean I need to create that parser and scanner class ? I thought since I define the syntax that those things would be generated by the tool. > > What I need to define exactly ? > > Why when I select the PythonScanner2 and PythonParser2 and click then Compile LR it gives a MNU receiver of method is nil ? > > I am using latest Pharo 4 image. > > My goal is to parse python types to similar pharo objects. I get those python types as strings and my main focus in lists, dictionaries and tuples . The tricky part is that one can contain the other inside in every imagined way. > > The way I understand it I will need something called "transformations" to convert those python types to OrderedCollections, Arrays etc and anything would make more sense for a pharo coder. > > Additionally what is the meaning of the vertibal bar ? --> | > eg. > | Number > > Are there any other tutorials that can help a beginner like me to understand these concepts ? > > I am not looking for someone to give me the solution to the plate, I would love to learn and understand parsing because I am very interested into making Pharo easy to mix with Python code and allow Pharo to use Python libraries without the user having to learn or code Python :) > > As you may imagine this is a crucial ingredient for my project Ephestos which tries to use Pharo to script Blender by either replacing or cooperating with blender python. So learning a good way to parse pharo code to python code and vice versa is extremely important for me. ---> Save our in-boxes! http://emailcharter.org <--- Johan Fabry - http://pleiad.cl/~jfabry PLEIAD lab - Computer Science Department (DCC) - University of Chile

Jan. 28, 2015

SmaCC: First steps

by kilon alios

Ok I have read a few times of the tutorial of Smacc in here http://www.refactoryworkers.com/SmaCC/ASTs.html and I am also following the help tool documentation inside pharo for SmaCC and I have to say I am very confused. Please bare with me because I am extremely noob when it comes to parsing, this is my first effort. Now the way I understand it so far, is that SmaCC uses a syntax similar to regex expressions to define parsers and scanners. Scanners evaluate a string to see that it contains a valid form and parser divide to parts named as "tokens" and help in the creating of ASTs which are basically hierarchy tree containing the syntax elements of a language. Now in order to make SmaCC work I need to use the SmaCC tool that comes with pharo . The smacc tool takes two inputs a scanner and a parser class. Does that mean I need to create that parser and scanner class ? I thought since I define the syntax that those things would be generated by the tool. What I need to define exactly ? Why when I select the PythonScanner2 and PythonParser2 and click then Compile LR it gives a MNU receiver of method is nil ? I am using latest Pharo 4 image. My goal is to parse python types to similar pharo objects. I get those python types as strings and my main focus in lists, dictionaries and tuples . The tricky part is that one can contain the other inside in every imagined way. The way I understand it I will need something called "transformations" to convert those python types to OrderedCollections, Arrays etc and anything would make more sense for a pharo coder. Additionally what is the meaning of the vertibal bar ? --> | eg. | Number Are there any other tutorials that can help a beginner like me to understand these concepts ? I am not looking for someone to give me the solution to the plate, I would love to learn and understand parsing because I am very interested into making Pharo easy to mix with Python code and allow Pharo to use Python libraries without the user having to learn or code Python :) As you may imagine this is a crucial ingredient for my project Ephestos which tries to use Pharo to script Blender by either replacing or cooperating with blender python. So learning a good way to parse pharo code to python code and vice versa is extremely important for me.

Jan. 28, 2015