suspect-devices/circuitpython/py/parse.c, branch v1.0.1 CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=v1.0.1 2014-05-10T16:36:41+00:00 py: Improve handling of memory error in parser. 2014-05-10T16:36:41+00:00 Damien George damien.p.george@gmail.com 2014-05-10T16:36:41+00:00 urn:sha1:1b82e9af5c9b67cae8f7a35abc2dee3989fbdc06 Parser shouldn't raise exceptions, so needs to check when memory allocation fails. This patch does that for the initial set up of the parser state. Also, we now put the parser object on the stack. It's small enough to go there instead of on the heap. This partially addresses issue #558. py, parser: Add commented-out code to discard doc strings. 2014-05-06T20:44:11+00:00 Damien George damien.p.george@gmail.com 2014-05-06T20:44:11+00:00 urn:sha1:93afa230a42592023ba39951a48109d098f03bbe Doesn't help with RAM reduction because doc strings are interned as soon as they are encountered, which is too soon to do any optimisations on them. py: Turn down amount of RAM parser and compiler use. 2014-05-05T12:19:03+00:00 Damien George damien.p.george@gmail.com 2014-05-05T12:19:03+00:00 urn:sha1:66e18f04d811197854c0ce970b2dc8ac17deaebc There are 2 locations in parser, and 1 in compiler, where memory allocation is not precise. In the parser it's the rule stack and result stack, in the compiler it's the array for the identifiers in the current scope. All other mallocs are exact (ie they don't allocate more than is needed). This patch adds tuning options (MP_ALLOC_*) to mpconfig.h for these 3 inexact allocations. The inexact allocations in the parser should actually be close to logarithmic: you need an exponentially larger script (absent pathological cases) to use up more room on the rule and result stacks. As such, the default allocation policy for these is now to start with a modest sized stack, but grow only in small increments. For the identifier arrays in the compiler, these now start out quite small (4 entries, since most functions don't have that many ids), and grow incrementally by 6 (since if you have more ids than 4, you probably have quite a few more, but it wouldn't be exponentially more). Partially addresses issue #560. Add license header to (almost) all files. 2014-05-03T22:27:38+00:00 Damien George damien.p.george@gmail.com 2014-05-03T22:27:38+00:00 urn:sha1:04b9147e150d2d6fa3750f312fe328b6a71c1b28 Blanket wide to all .c and .h files. Some files originating from ST are difficult to deal with (license wise) so it was left out of those. Also merged modpyb.h, modos.h, modstm.h and modtime.h in stmhal/. py: Check explicitly for memory allocation failure in parser. 2014-04-10T14:27:31+00:00 Damien George damien.p.george@gmail.com 2014-04-10T14:27:31+00:00 urn:sha1:58ba4c3b4c12e9bf6b8731fd26e0c9cac527122f Previously, a failed malloc/realloc would throw an exception, which was not caught. I think it's better to keep the parser free from NLR (exception throwing), hence this patch. py: Clean up includes. 2014-03-17T09:43:40+00:00 xbe xbe@machine 2014-03-16T07:14:26+00:00 urn:sha1:efe34223945a5d27a7ae9445d0793d6330cd2411 Remove unnecessary includes. Add includes that improve portability. py: Implement bit-shift and not operations for mpz. 2014-03-01T19:50:50+00:00 Damien George damien.p.george@gmail.com 2014-03-01T19:50:50+00:00 urn:sha1:06201ff3d6d9485b2657fc9ac4aa8a306884322f Implement not, shl and shr in mpz library. Add function to create mpzs on the stack, used for memory efficiency when rhs is a small int. Factor out code to parse base-prefix of number into a dedicated function. parse: Refactor parse node encoding to support full range of small ints. 2014-02-22T14:39:45+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2014-02-22T14:39:45+00:00 urn:sha1:56e5ef203b01ac8dfb1cb46143f6f7c53237b79d Based on suggestion by @dpgeorge at https://github.com/micropython/micropython/pull/313 parse: Note that fact that parser's small ints are different than VM small int. 2014-02-21T01:27:09+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2014-02-21T00:04:32+00:00 urn:sha1:bbf0e2fe120f095ce09fcb7eb631c9fd04bd9760 Specifically, VM's small ints are 31 bit, while parser's only 28. There's already MP_OBJ_FITS_SMALL_INT(), so, for clarity, rename MP_FIT_SMALL_INT() to MP_PARSE_FITS_SMALL_INT(). Implement proper exception type hierarchy. 2014-02-15T16:10:44+00:00 Damien George damien.p.george@gmail.com 2014-02-15T16:10:44+00:00 urn:sha1:c5966128c7c8a768f6726f299d85d5daef6bed48 Each built-in exception is now a type, with base type BaseException. C exceptions are created by passing a pointer to the exception type to make an instance of. When raising an exception from the VM, an instance is created automatically if an exception type is raised (as opposed to an exception instance). Exception matching (RT_BINARY_OP_EXCEPTION_MATCH) is now proper. Handling of parse error changed to match new exceptions. mp_const_type renamed to mp_type_type for consistency.