Changes

Summer of Code/2013/Turtle Blocks Python export project (view source)

Revision as of 16:51, 11 July 2013

265 bytes added , 16:51, 11 July 2013

update decisions; move deferred ones to new Deferred section

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* The path to the TA installation must be in the environment variable <code>PYTHONPATH</code>.

* Boxes and actions are stored in a dictionary in order to allow for arbitrary names (e.g., names that start with a number or names that are read from the content of a box).

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* All blocks (including the ones introduced by plugins) reference a <code>Primitive</code> object, which can be called to execute the block in TA, or transformed into a Python AST.

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** Type conversion and other modification of the arguments of a block is done by ''slot wrappers''. A slot wrapper is a <code>Primitive</code> that is attached to the argument of another <code>Primitive</code>. Slot wrappers are called/ transformed before the <code>Primitive</code> itself.

=== Pending ===

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The following design issues have yet to be decided:

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* Enable the user to control the speed of execution (e.g., by setting a global <code>step_time</code>)? ~~''deferred on 2013-06-14''~~

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=== Deferred ===

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The following design issues have not yet been decided, but are being deferred due to their low priority:

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* Enable the user to control the speed of execution (e.g., by setting a global <code>step_time</code>)?

** How to implement this? E.g., call a <code>wait(step_time)</code> function in between two steps?

* Should the status bar be shown when the exported code is run?

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* Blocks introduced by plugins: Should the plugin provide info about how to transform its blocks into Python?

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* How to handle type conversion between numbers and strings that is done implicitly in TA?

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** E.g., resolve types when converting the code (possible?), and output the code specific to the type.

Marion Zepf

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edits