suspect-devices/circuitpython/py/parse.c, branch v1.8.7CircuitPython - a Python implementation for teaching coding with microcontrollershttps://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=v1.8.72016-11-15T05:48:49+00:00py/parse: Add code to fold logical constants in or/and/not operations.2016-11-15T05:48:49+00:00Damien Georgedamien.p.george@gmail.com2016-11-13T04:36:49+00:00urn:sha1:9b525134d1bf5b3f05b39fe90ddaa4bd33ea3e0d
Adds about 200 bytes to the code size when constant folding is enabled.
py/parse: Make mp_parse_node_new_leaf an inline function.2016-11-15T05:48:48+00:00Damien Georgedamien.p.george@gmail.com2016-11-13T04:35:11+00:00urn:sha1:ed9c93f0f13fe2b6b4b0fbc1155b1e38ee1be242
It is split into 2 functions, one to make small ints and the other to make
a non-small-int leaf node. This reduces code size by 32 bytes on
bare-arm, 64 bytes on unix (x64-64) and 144 bytes on stmhal.
py/parse: Move function to check for const parse node to parse.[ch].2016-11-15T05:48:48+00:00Damien Georgedamien.p.george@gmail.com2016-11-13T04:32:05+00:00urn:sha1:b0cbfb0492028192a28f0514fba71ec954330108py: Fix wrong assumption that m_renew will not move if shrinking2016-11-02T12:15:41+00:00Colin Hogbencolin@infinnovation.co.uk2016-10-31T14:05:56+00:00urn:sha1:f9b6b37cf65c4f65c4ad461d439fbf624c0f10c1
In both parse.c and qstr.c, an internal chunking allocator tidies up
by calling m_renew to shrink an allocated chunk to the size used, and
assumes that the chunk will not move. However, when MICROPY_ENABLE_GC
is false, m_renew calls the system realloc, which does not guarantee
this behaviour. Environments where realloc may return a different
pointer include:
(1) mbed-os with MBED_HEAP_STATS_ENABLED (which adds a wrapper around
malloc & friends; this is where I was hit by the bug);
(2) valgrind on linux (how I diagnosed it).
The fix is to call m_renew_maybe with allow_move=false.
py/parse: Only replace constants that are standalone identifiers.2016-09-23T07:23:16+00:00Damien Georgedamien.p.george@gmail.com2016-09-23T07:23:16+00:00urn:sha1:6d310a5552f43b3f984a5d8020b41301ab7937a4
This fixes constant substitution so that only standalone identifiers are
replaced with their constant value (if they have one). I.e. don't
replace NAME in expressions like obj.NAME or NAME = expr.
py/parse: Treat constants that start with underscore as private.2016-06-06T16:28:32+00:00Damien Georgedamien.p.george@gmail.com2016-06-06T16:28:32+00:00urn:sha1:b1533c43669c037d04c87d1756355cdc8edd5e0a
Assignments of the form "_id = const(value)" are treated as private
(following a similar CPython convention) and code is no longer emitted
for the assignment to a global variable.
See issue #2111.
py: Declare constant data as properly constant.2016-05-20T11:46:20+00:00Damien Georgedamien.p.george@gmail.com2016-05-20T11:38:15+00:00urn:sha1:3ff16ff52e45d4c0bf1df5fa650b72d6d835451b
Otherwise some compilers (eg without optimisation) will put this read-only
data in RAM instead of ROM.
py/parse: Add uerrno to list of modules to look for constants in.2016-05-10T22:30:39+00:00Damien Georgedamien.p.george@gmail.com2016-05-10T22:23:50+00:00urn:sha1:e36ff98c80aa93a2f9fdd05800aaa6e75ead2b72py: Simplify "and" action within parser by making ident-rules explicit.2016-04-14T12:49:23+00:00Damien Georgedamien.p.george@gmail.com2016-04-14T12:23:50+00:00urn: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: Fix constant folding and inline-asm to work with new async grammar.2016-04-13T14:26:39+00:00Damien Georgedamien.p.george@gmail.com2016-04-13T14:21:47+00:00urn:sha1:eacbd7aeba3bdd634b56af544e40da87779f4a95