CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=4.0.0-beta.7 2019-04-10T21:48:27+00:00 2019-04-10T21:48:27+00:00 Scott Shawcroft scott@tannewt.org 2019-04-10T21:48:27+00:00 urn:sha1:debff191264c12ddd758720096a9c7d6a49e7b93 2019-04-10T01:32:52+00:00 Scott Shawcroft scott@tannewt.org 2019-04-05T20:03:03+00:00 urn:sha1:5028f87b0988775d37c59ac2f65035468936bb0c * Update pybadge pins and flash for rev D * TileGrid now validates the type of the pixel_shader. * Display actually handles incoming subclass objects. * MicroPython will inspect native parents to see if special accessors are used. 2019-02-12T04:55:05+00:00 Scott Shawcroft scott@tannewt.org 2019-02-06T20:13:17+00:00 urn:sha1:c17f147be95e7490e5207c747add2da1cc8b167f This changes a number of things in displayio: * Introduces BuiltinFont and Glyph so the built in font can be used by libraries. For boards with a font it is available as board.TERMINAL_FONT. Fixes #1172 * Remove _load_row from Bitmap in favor of bitmap[] access. Index can be x/y tuple or overall index. Fixes #1191 * Add width and height properties to Bitmap. * Add insert and [] access to Group. Fixes #1518 * Add index param to pop on Group. * Terminal no longer takes unicode character info. It takes a BuiltinFont instead. * Fix Terminal's handling of [###D vt100 commands used when up arrowing into repl history. * Add x and y positions to Group plus scale as well. * Add bitmap accessor for BuiltinFont 2019-02-02T00:04:16+00:00 Scott Shawcroft scott@tannewt.org 2019-02-02T00:04:16+00:00 urn:sha1:a39fc94dde9cd73329130014eb504482591b5a53 When they are added later, they are also referenced in the main dictionary. Fixes #1218 2019-01-15T01:29:19+00:00 Scott Shawcroft scott@tannewt.org 2019-01-14T23:14:40+00:00 urn:sha1:72d993d60c5e5238942491df00776ca31f9758a1 2018-08-09T20:29:30+00:00 Scott Shawcroft scott@tannewt.org 2018-08-09T01:24:49+00:00 urn:sha1:96ebf5bc3fb455162286b9bc31e763f3c4f1c457 * Fix finding translations with escaped characters. * Add back \r to translations since its needed by screen. 2018-07-14T02:51:10+00:00 Dan Halbert halbert@halwitz.org 2018-07-14T02:51:10+00:00 urn:sha1:e2e01efa84d2ed46d004edf48076e4701accc176 2018-07-12T18:13:51+00:00 Dan Halbert halbert@halwitz.org 2018-07-12T18:13:51+00:00 urn:sha1:0d27f4d9a66dcb47b545e715d1833094b0c7b484 2018-07-11T20:45:30+00:00 Dan Halbert halbert@halwitz.org 2018-07-11T20:45:30+00:00 urn:sha1:7c219600a246d8956d0b23ea3f5d125a820e6b6a 2018-06-08T02:12:08+00:00 Damien George damien.p.george@gmail.com 2018-05-25T07:09:54+00:00 urn:sha1:36c105218321167d47b0fb67575a7cddc36d17e7 This patch is a code optimisation, trading text bytes for speed. On pyboard it's an increase of 0.06% in code size for a gain (in pystone performance) of roughly 6.5%. The patch optimises load/store/delete of attributes in user defined classes by not looking up special accessors (@property, __get__, __delete__, __set__, __setattr__ and __getattr_) if they are guaranteed not to exist in the class. Currently, if you do my_obj.foo() then the runtime has to do a few checks to see if foo is a property or has __get__, and if so delegate the call. And for stores things like my_obj.foo = 1 has to first check if foo is a property or has __set__ defined on it. Doing all those checks each and every time the attribute is accessed has a performance penalty. This patch eliminates all those checks for cases when it's guaranteed that the checks will always fail, ie no attributes are properties nor have any special accessor methods defined on them. To make this guarantee it checks all attributes of a user-defined class when it is first created. If any of the attributes of the user class are properties or have special accessors, or any of the base classes of the user class have them, then it sets a flag in the class to indicate that special accessors must be checked for. Then in the load/store/delete code it checks this flag to see if it can take the shortcut and optimise the lookup. It's an optimisation that's pretty widely applicable because it improves lookup performance for all methods of user defined classes, and stores of attributes, at least for those that don't have special accessors. And, it allows to enable descriptors with minimal additional runtime overhead if they are not used for a particular user class. There is one restriction on dynamic class creation that has been introduced by this patch: a user-defined class cannot go from zero special accessors to one special accessor (or more) after that class has been subclassed. If the script attempts this an AttributeError is raised (see addition to tests/misc/non_compliant.py for an example of this case). The cost in code space bytes for the optimisation in this patch is: unix x64: +528 unix nanbox: +508 stm32: +192 cc3200: +200 esp8266: +332 esp32: +244 Performance tests that were done: - on unix x86-64, pystone improved by about 5% - on pyboard, pystone improved by about 6.5%, from 1683 up to 1794 - on pyboard, bm_chaos (from CPython benchmark suite) improved by about 5% - on esp32, pystone improved by about 30% (but there are caching effects) - on esp32, bm_chaos improved by about 11%