Arthur Maniet
f0cefa7232
* use new support to colorize reconciled bank statement lines * fixes tokenization of ``is not`` to not blow up on ``not foo`` * improves calling code to get truthiness of evaluated expression instead of truthiness of javascript-equivalent objects: an empty list is falsy in Python but truthy in javascript, since the evaluated expression is in Python one would expect Python truthiness rules without having to manually convert to boolean closes #5070
47 lines
1.1 KiB
ReStructuredText
47 lines
1.1 KiB
ReStructuredText
* Parser
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since parsing expressions, try with a pratt parser
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http://journal.stuffwithstuff.com/2011/03/19/pratt-parsers-expression-parsing-made-easy/
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http://effbot.org/zone/simple-top-down-parsing.htm
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Evaluator
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---------
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* Builtins should be built-in, there should be no need to add e.g. ``py.bool`` to the evaluation context (?)
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* Stop busyworking trivial binary operator
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* Make it *trivial* to build Python type-wrappers
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* Implement Python's `data model protocols
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<http://docs.python.org/reference/datamodel.html#basic-customization>`_
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for *all* supported operations, optimizations can come later
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* Automatically type-wrap everything (for now anyway)
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Base type requirements:
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***********************
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* int
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* float
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* --str-- unicode
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* bool
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* dict
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* tuple
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* list
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* ?module
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* ?object
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* datetime.time
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* datetime.timedelta
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* NotImplementedType
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Base methods requirement
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************************
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* ``__getattr__``
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* ``dict.get``
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In datamodel, not implemented in any type, untested
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***************************************************
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* a[b]
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* a + b, a - b, a * b, ...
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* +a, ~a
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