On Tue, Feb 28, 2017 at 11:28 AM, Offray Vladimir Luna Cárdenas <
offray.l...@mutabit.com> wrote:
> Hi,
>
> I would like to store the object resulting from executing a playground.
> This would imply two steps:
>
> - Knowing that the playground content was executed (via the play button or
> its shortcuts Ctrl + Shift + g or Ctrl + g).
> - Getting the results of that execution. For example if the result at the
> end is a string or a dictionary, I would like to get that string or
> dictionary.
>
> Any pointers on how to make that will be welcomed.
>
> Cheers,
>
> Offray
>
> Ps: I still get lost when I search by myself trying to answer questions
> like the ones above. I imagine that in some way is related with
> evaluationAction and presentations, by looking for the source code of "do
> it and go", but still I can't get a functional code snippet to start
> prototyping.
>
>
In playground, if you evaluate "self halt. 42" at top of the debug stack
you'll see method...
Undefined>>DoIt
self halt.
^ 42
where stepping
OVER returns 42 into "value" variable in OpalCompiler>>evaluate
OVER returns 42 into "result" variable in
RubSmalltalkEditor>>evaluate:andDo:
at the end of which stepping
INTO "^aBlock value: result" takes you to
RubSmalltalkEditor>>highlightEvaluateAndDo:, where
INTO "[:result | aBlock value: result]" takes you to
GLMPharoScriptPResentation(GLMRubricSmalltalkCodePresentation)>>executionSelectionActions
where changing "aPresentation highlightEvaluateAndDo: [ :result | ] ];
to "aPresentation highlightEvaluateAndDo: [ :result |
self inform: 'Result ' , result printString] ]; "
and opening a new Playground, then evaluating "42" informs us that 42 is
the result.
Stepping further along, in
GLMMorphicPharoScriptRenderer(GLMMorphicPharoCodePresentation)>>highlightEvaluateAndDo::
the value returned from...
self
evaluate: self highlightedTextAsStream
andDo: [:result | aBlock value: result. ].
is not 42 but aGLMPharoScriptPresentation. it might help to change that
to...
andDo: [:result | aBlock value: result. result ].
but anyway that return value is thrown away in
GLMMorphicPharoScriptRenderer(GLMMorphicPharoCodePresentation)>>actOnHighlightAndEvaluate:
So subclassing GLMRubricSmalltalkCodePresentation and overriding
#executionSelectionActions
is perhaps your best bet. Or some GLM expert provides a nice way for a
user to set this customAssignmentBlock...
aPresentation highlightEvaluateAndDo: [ :result |
customAssignmentBlock value: result ].
in #executionSelectionActions.
cheers -ben
