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Re: [Pharo-users] How do i list the execution order of statements inside a method?

by StÃ©phane Ducasse

Mircea you should explain us what you are trying to achieve. On Jan 25, 2013, at 8:58 AM, Mircea SamoilÄ wrote: > This is good. So to get this "execution order" and no run-time errors... i would need to get behind the complier and before the code actually runs. I don't want it to bump up errors but rather just "mark" the code, in a manner similar to code highlighting but not at the character/word level but at language level. > > Mark unary, binary and keyword and have get execution pattern visible out of this. > > Q1. Is there anywhere i can read more on this? How is this done? How i would be able to > > Q2. You mentioned Pharo 3.0 and i can see there is a 2.0 betaâ¦ i guess this functionality would be way off in the future? > > Q3. This is not a questionâ¦ but a requestâ¦ since it seems you know what you are talking about, please bump me in the right direction! > > > Pe 25.01.2013, la 13:39, Marcus Denker <marcus.denker(a)inria.fr> a scris: > >>> >>> >>> Question 1: Would "invalid" code compile anyway and i would get the execution order inspecting the AST, as errors would pop up at "run time"? >>> >> Depending on which kind. Everything that is syntactically correct is compiled and then run. This can lead to runtime errors, e.g. when a method >> is called that does not exist (other languages would catch that due to static typing at compile time). >> >>> Question 2: Orâ¦ invalid code does not compile and i don't get to the stage where AST gives me anything useful (when using copy pasted code from anywhere) so i have to code some kind of smalltalk "text" parser and search for the patterns myself? >>> >> The good news is that the RBParser can compile even syntactically incorrect code. >> (Camillo added this): >> >> RBParser parseFaultyExpression: '1 +' >> >> Im 3.0, we will use this for syntax highlighting (instead of the special parser now used). >> >> But one fun experiment would be to extend the compiler (and the AST Interpreter) to actually >> do the right thing: compile code for the correct part and raise an error at runtime for the >> RBParseErrorNode. :-) >> >> Marcus >

Jan. 25, 2013

Re: [Pharo-users] How do i list the execution order of statements inside a method?

by mircea

Wowâ¦ found this http://magaloma.seasidehosting.st/AST-Core It seems the AST knows the difference between RBBlockNode and assignmentâ¦ it seems to have everything â¦ Is this AST in use in Pharo right now? Can i use RBConfigurableFormatter to do this? Pe 25.01.2013, la 13:40, "Marcus Denker-4 [via Smalltalk]" <ml-node+s1294792n4665316h1(a)n4.nabble.com> a scris: > > > > > > Question 1: Would "invalid" code compile anyway and i would get the execution order inspecting the AST, as errors would pop up at "run time"? > > > Depending on which kind. Everything that is syntactically correct is compiled and then run. This can lead to runtime errors, e.g. when a method > is called that does not exist (other languages would catch that due to static typing at compile time). > > > Question 2: Orâ¦ invalid code does not compile and i don't get to the stage where AST gives me anything useful (when using copy pasted code from anywhere) so i have to code some kind of smalltalk "text" parser and search for the patterns myself? > > > The good news is that the RBParser can compile even syntactically incorrect code. > (Camillo added this): > > RBParser parseFaultyExpression: '1 +' > > Im 3.0, we will use this for syntax highlighting (instead of the special parser now used). > > But one fun experiment would be to extend the compiler (and the AST Interpreter) to actually > do the right thing: compile code for the correct part and raise an error at runtime for the > RBParseErrorNode. :-) > > Marcus > > > If you reply to this email, your message will be added to the discussion below: > http://forum.world.st/How-do-i-list-the-execution-order-of-statements-insid… > To unsubscribe from How do i list the execution order of statements inside a method?, click here. > NAML -- View this message in context: http://forum.world.st/How-do-i-list-the-execution-order-of-statements-insid… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Jan. 25, 2013

Re: [Pharo-users] How do i list the execution order of statements inside a method?

by Mircea SamoilÄ

This is good. So to get this "execution order" and no run-time errors... i would need to get behind the complier and before the code actually runs. I don't want it to bump up errors but rather just "mark" the code, in a manner similar to code highlighting but not at the character/word level but at language level. Mark unary, binary and keyword and have get execution pattern visible out of this. Q1. Is there anywhere i can read more on this? How is this done? How i would be able to Q2. You mentioned Pharo 3.0 and i can see there is a 2.0 betaâ¦ i guess this functionality would be way off in the future? Q3. This is not a questionâ¦ but a requestâ¦ since it seems you know what you are talking about, please bump me in the right direction! Pe 25.01.2013, la 13:39, Marcus Denker <marcus.denker(a)inria.fr> a scris: >> >> >> Question 1: Would "invalid" code compile anyway and i would get the execution order inspecting the AST, as errors would pop up at "run time"? >> > Depending on which kind. Everything that is syntactically correct is compiled and then run. This can lead to runtime errors, e.g. when a method > is called that does not exist (other languages would catch that due to static typing at compile time). > >> Question 2: Orâ¦ invalid code does not compile and i don't get to the stage where AST gives me anything useful (when using copy pasted code from anywhere) so i have to code some kind of smalltalk "text" parser and search for the patterns myself? >> > The good news is that the RBParser can compile even syntactically incorrect code. > (Camillo added this): > > RBParser parseFaultyExpression: '1 +' > > Im 3.0, we will use this for syntax highlighting (instead of the special parser now used). > > But one fun experiment would be to extend the compiler (and the AST Interpreter) to actually > do the right thing: compile code for the correct part and raise an error at runtime for the > RBParseErrorNode. :-) > > Marcus

Jan. 25, 2013

Re: [Pharo-users] How do i list the execution order of statements inside a method?

by Marcus Denker

> > > Question 1: Would "invalid" code compile anyway and i would get the execution order inspecting the AST, as errors would pop up at "run time"? > Depending on which kind. Everything that is syntactically correct is compiled and then run. This can lead to runtime errors, e.g. when a method is called that does not exist (other languages would catch that due to static typing at compile time). > Question 2: Orâ¦ invalid code does not compile and i don't get to the stage where AST gives me anything useful (when using copy pasted code from anywhere) so i have to code some kind of smalltalk "text" parser and search for the patterns myself? > The good news is that the RBParser can compile even syntactically incorrect code. (Camillo added this): RBParser parseFaultyExpression: '1 +' Im 3.0, we will use this for syntax highlighting (instead of the special parser now used). But one fun experiment would be to extend the compiler (and the AST Interpreter) to actually do the right thing: compile code for the correct part and raise an error at runtime for the RBParseErrorNode. :-) Marcus

Jan. 25, 2013

Re: [Pharo-users] How do i list the execution order of statements inside a method?

by Benjamin

In Squeak I can't say, but in Pharo, the Compiler can be "stupid" and compile more or less everything :) Ben On Jan 25, 2013, at 12:20 PM, Mircea SamoilÄ wrote: > I was just in the debugger stepping through code right now. Interestingly enough stepping through code like this gives you snapshots of execution, if i were to overlay them in Photoshop all at once i would get something close to what i want. > > But what happens if the code does not exist, class names are not valid, method names are just examples. > > If i were to analyze something like an example someone has posted somewhere. > > Question 1: Would "invalid" code compile anyway and i would get the execution order inspecting the AST, as errors would pop up at "run time"? > > Question 2: Orâ¦ invalid code does not compile and i don't get to the stage where AST gives me anything useful (when using copy pasted code from anywhere) so i have to code some kind of smalltalk "text" parser and search for the patterns myself? > > > Pe 25.01.2013, la 13:09, GÃ¶ran Krampe <goran(a)krampe.se> a scris: > >> Hi! >> >> Another way to answer: >> >> 1. If you want to show the order of the messages sent *without* actually executing the code you need to compile the code and inspect the AST. This is not that hard to do. >> >> 2. If you want to visualize the order while executing it - you could look at how Debugger works and simply "debug" the code programmatically. It basically means spawning a Process and sending "step" to it over and over and looking at where it is etc. Funky enough the Debugger is "just Smalltalk code". :) >> >> regards, GÃ¶ran >> >> > >

Jan. 25, 2013

Re: [Pharo-users] How do i list the execution order of statements inside a method?

by Mircea SamoilÄ

I was just in the debugger stepping through code right now. Interestingly enough stepping through code like this gives you snapshots of execution, if i were to overlay them in Photoshop all at once i would get something close to what i want. But what happens if the code does not exist, class names are not valid, method names are just examples. If i were to analyze something like an example someone has posted somewhere. Question 1: Would "invalid" code compile anyway and i would get the execution order inspecting the AST, as errors would pop up at "run time"? Question 2: Orâ¦ invalid code does not compile and i don't get to the stage where AST gives me anything useful (when using copy pasted code from anywhere) so i have to code some kind of smalltalk "text" parser and search for the patterns myself? Pe 25.01.2013, la 13:09, GÃ¶ran Krampe <goran(a)krampe.se> a scris: > Hi! > > Another way to answer: > > 1. If you want to show the order of the messages sent *without* actually executing the code you need to compile the code and inspect the AST. This is not that hard to do. > > 2. If you want to visualize the order while executing it - you could look at how Debugger works and simply "debug" the code programmatically. It basically means spawning a Process and sending "step" to it over and over and looking at where it is etc. Funky enough the Debugger is "just Smalltalk code". :) > > regards, GÃ¶ran > >

Jan. 25, 2013

Re: [Pharo-users] How do i list the execution order of statements inside a method?

by GÃ¶ran Krampe

Hi! Another way to answer: 1. If you want to show the order of the messages sent *without* actually executing the code you need to compile the code and inspect the AST. This is not that hard to do. 2. If you want to visualize the order while executing it - you could look at how Debugger works and simply "debug" the code programmatically. It basically means spawning a Process and sending "step" to it over and over and looking at where it is etc. Funky enough the Debugger is "just Smalltalk code". :) regards, GÃ¶ran

Jan. 25, 2013

Re: [Pharo-users] How do i list the execution order of statements inside a method?

by Camillo Bruni

If you want to go more into details you can have a look at our almost-mature AST interpreter: http://smalltalkhub.com/#!/~dh83/ast-interpreter There is a configuration and a lot of tests which document how it works. There you have complete control over what is executed where. Simply override the method that handles sends and you should be able to easily add the things you want. On 2013-01-25, at 10:54, Mircea SamoilÄ <mircea(a)unom.ro> wrote: > Thank you for the fast response. > > However i don't need it myself. I want to use this in a small piece of software i'm writing. Essentially showing the execution order of any smalltalk code. I wanted to use the "way" pharo works itself to do thisâ¦ instead of parsing the text myself and checking. > > For exampleâ¦ in the Workspaceâ¦ i can write a small piece of code that does something. When i select it and click Do It. Pharo goes on to execute the textâ¦ it first parses it i think and then figures out what to execute first and then pass the product of that object to the next thing and so on. > > It might look like this > > something dothis > > anotherobject something dothis > > finalobject [ anotherobject something do this ]. > > > > > > Pe 25.01.2013, la 11:47, Camillo Bruni <camillobruni(a)gmail.com> a scris: > >> The easiest way to figure that out is to debug the code and follow the execution step by step. >> >> Note that you can basically develop in the debugger, unlike most other programming languages! >> >> There are two ways to launch the debugger: >> 1. put a "self halt" in the code, this is the Smalltalk way of adding a breakpoint >> 2. Select a piece of code and debug it, right click and select debug >> >> I hope this will help you >> >> On 2013-01-25, at 10:43, mircea <mircea(a)unom.ro> wrote: >> >>> Hello, >>> >>> I have this piece of code (taken from ProfStef). How do i programmatically >>> get the order in which the objects are executed by Squeak. I know the order >>> of execution from smalltalk documentation. But what if i need this >>> information inside an app i'm building. >>> >>> tutorial: aTutorialClass lesson: aSelector >>> | tutorial | >>> tutorial := aTutorialClass new. >>> self player tutorial: tutorial. >>> self tutorial: aTutorialClass lessonAt: (tutorial indexOfLesson: >>> aSelector). >>> >>> Thank you! >>> >>> >>> >>> -- >>> View this message in context: http://forum.world.st/How-do-i-list-the-execution-order-of-statements-insid… >>> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >>> >> >> > >

Jan. 25, 2013

Re: [Pharo-users] How do i list the execution order of statements inside a method?

by Mircea SamoilÄ

Thank you for the fast response. However i don't need it myself. I want to use this in a small piece of software i'm writing. Essentially showing the execution order of any smalltalk code. I wanted to use the "way" pharo works itself to do thisâ¦ instead of parsing the text myself and checking. For exampleâ¦ in the Workspaceâ¦ i can write a small piece of code that does something. When i select it and click Do It. Pharo goes on to execute the textâ¦ it first parses it i think and then figures out what to execute first and then pass the product of that object to the next thing and so on. It might look like this something dothis anotherobject something dothis finalobject [ anotherobject something do this ]. Pe 25.01.2013, la 11:47, Camillo Bruni <camillobruni(a)gmail.com> a scris: > The easiest way to figure that out is to debug the code and follow the execution step by step. > > Note that you can basically develop in the debugger, unlike most other programming languages! > > There are two ways to launch the debugger: > 1. put a "self halt" in the code, this is the Smalltalk way of adding a breakpoint > 2. Select a piece of code and debug it, right click and select debug > > I hope this will help you > > On 2013-01-25, at 10:43, mircea <mircea(a)unom.ro> wrote: > >> Hello, >> >> I have this piece of code (taken from ProfStef). How do i programmatically >> get the order in which the objects are executed by Squeak. I know the order >> of execution from smalltalk documentation. But what if i need this >> information inside an app i'm building. >> >> tutorial: aTutorialClass lesson: aSelector >> | tutorial | >> tutorial := aTutorialClass new. >> self player tutorial: tutorial. >> self tutorial: aTutorialClass lessonAt: (tutorial indexOfLesson: >> aSelector). >> >> Thank you! >> >> >> >> -- >> View this message in context: http://forum.world.st/How-do-i-list-the-execution-order-of-statements-insid… >> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >> > >

Jan. 25, 2013

Re: [Pharo-users] How do i list the execution order of statements inside a method?

by Camillo Bruni

The easiest way to figure that out is to debug the code and follow the execution step by step. Note that you can basically develop in the debugger, unlike most other programming languages! There are two ways to launch the debugger: 1. put a "self halt" in the code, this is the Smalltalk way of adding a breakpoint 2. Select a piece of code and debug it, right click and select debug I hope this will help you On 2013-01-25, at 10:43, mircea <mircea(a)unom.ro> wrote: > Hello, > > I have this piece of code (taken from ProfStef). How do i programmatically > get the order in which the objects are executed by Squeak. I know the order > of execution from smalltalk documentation. But what if i need this > information inside an app i'm building. > > tutorial: aTutorialClass lesson: aSelector > | tutorial | > tutorial := aTutorialClass new. > self player tutorial: tutorial. > self tutorial: aTutorialClass lessonAt: (tutorial indexOfLesson: > aSelector). > > Thank you! > > > > -- > View this message in context: http://forum.world.st/How-do-i-list-the-execution-order-of-statements-insid… > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >

Jan. 25, 2013