suspect-devices/circuitpython/py/grammar.h, branch v1.8.5 CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=v1.8.5 2016-04-14T12:49:23+00:00 py: Simplify "and" action within parser by making ident-rules explicit. 2016-04-14T12:49:23+00:00 Damien George damien.p.george@gmail.com 2016-04-14T12:23:50+00:00 urn:sha1:0c1de1cdeea98e55710d27f7926da717086ac0fc Most grammar rules can optimise to the identity if they only have a single argument, saving a lot of RAM building the parse tree. Previous to this patch, whether a given grammar rule could be optimised was defined (mostly implicitly) by a complicated set of logic rules. With this patch the definition is always specified explicitly by using "and_ident" in the rule definition in the grammar. This simplifies the logic of the parser, making it a bit smaller and faster. RAM usage in unaffected. py: add async/await/async for/async with syntax 2016-04-13T14:26:38+00:00 pohmelie multisosnooley@gmail.com 2016-01-27T20:23:11+00:00 urn:sha1:81ebba7e0236163b7594938201bf3a6b802ebfaa They are sugar for marking function as generator, "yield from" and pep492 python "semantically equivalents" respectively. @dpgeorge was the original author of this patch, but @pohmelie made changes to implement `async for` and `async with`. py: Don't allocate an extra parse node for power exponent. 2016-03-16T13:04:51+00:00 Damien George damien.p.george@gmail.com 2016-03-16T13:04:51+00:00 urn:sha1:3acaa28b52587bace3a4e8382fbf06ed6f6e4aaf Previous to this patch, the "**b" in "a**b" had its own parse node with just one item (the "b"). Now, the "b" is just the last element of the power parse-node. This saves (a tiny bit of) RAM when compiling. py/compile: Do proper checking of * and ** in function definition. 2015-11-23T16:50:42+00:00 Damien George damien.p.george@gmail.com 2015-11-23T16:50:42+00:00 urn:sha1:9a56912ad16065c8fc3670c8d493f922bc54e5b1 This patch checks that there is only one *, and that ** is last in the arg list. py: Implement default and star args for lambdas. 2015-11-17T14:00:14+00:00 Damien George damien.p.george@gmail.com 2015-11-17T14:00:14+00:00 urn:sha1:2c838942574a4970c922d1550f04e4b7b4d865a6 py: Don't generate unnecessary parse nodes for assignment or kwargs. 2015-10-08T13:26:01+00:00 Damien George damien.p.george@gmail.com 2015-10-08T13:26:01+00:00 urn:sha1:b948de36fb852aa1f9991cb3cc1ffc3b31813acd This patch eliminates the need for a nested parse node for assignments and keyword arguments. It saves a little bit of RAM when parsing. py/parse: Fix handling of empty input so it raises an exception. 2015-07-24T15:05:56+00:00 Damien George damien.p.george@gmail.com 2015-07-24T15:05:56+00:00 urn:sha1:96f0dd3cbc404b7f96bd7a35247faea8da266638 py: Clean up some bits and pieces in parser, grammar. 2015-04-21T16:43:18+00:00 Damien George damien.p.george@gmail.com 2015-04-21T16:43:18+00:00 urn:sha1:4735c45c511bf29ecb422456ca2ab0437e3c4ef0 py: Simplify grammar for stmt rule (this is also how CPython has it). 2015-04-21T16:35:50+00:00 Damien George damien.p.george@gmail.com 2015-04-21T16:35:50+00:00 urn:sha1:fa90ab1407c0de2ca1e51f7104f46cde7495d303 py: Parse big-int/float/imag constants directly in parser. 2015-02-08T01:57:40+00:00 Damien George damien.p.george@gmail.com 2015-02-08T01:57:40+00:00 urn:sha1:7d414a1b52d193bab2c94cf56932e1eba23ba542 Previous to this patch, a big-int, float or imag constant was interned (made into a qstr) and then parsed at runtime to create an object each time it was needed. This is wasteful in RAM and not efficient. Now, these constants are parsed straight away in the parser and turned into objects. This allows constants with large numbers of digits (so addresses issue #1103) and takes us a step closer to #722.