Commit Graph

68 Commits

Author SHA1 Message Date
Damien George 824f5c5a32 py/vstr: Combine vstr_new_size with vstr_new since they are rarely used.
Now there is just one function to allocate a new vstr, namely vstr_new
(in addition to vstr_init etc).  The caller of this function should know
what initial size to allocate for the buffer, or at least have some policy
or config option, instead of leaving it to a default (as it was before).
2016-10-14 16:46:34 +11:00
Damien George 5da0d29d3c py/vstr: Remove vstr.had_error flag and inline basic vstr functions.
The vstr.had_error flag was a relic from the very early days which assumed
that the malloc functions (eg m_new, m_renew) returned NULL if they failed
to allocate.  But that's no longer the case: these functions will raise an
exception if they fail.

Since it was impossible for had_error to be set, this patch introduces no
change in behaviour.

An alternative option would be to change the malloc calls to the _maybe
variants, which return NULL instead of raising, but then a lot of code
will need to explicitly check if the vstr had an error and raise if it
did.

The code-size savings for this patch are, in bytes: bare-arm:188,
minimal:456, unix(NDEBUG,x86-64):368, stmhal:228, esp8266:360.
2016-09-19 12:28:55 +10:00
Alex March 69d9e7d27d py/repl: Check for an identifier char after the keyword.
- As described in the #1850.
- Add cmdline tests.
2016-02-17 08:56:15 +00:00
Paul Sokolovsky 946f870e3c py/misc.h: Include stdint.h only once (unconditionally at the top). 2015-12-08 02:23:58 +02:00
Paul Sokolovsky 9f001b09a8 py/misc.h: Include stdint.h, as large share of code now depends on it. 2015-12-07 20:08:07 +02:00
Damien George 999cedb90f py: Wrap all obj-ptr conversions in MP_OBJ_TO_PTR/MP_OBJ_FROM_PTR.
This allows the mp_obj_t type to be configured to something other than a
pointer-sized primitive type.

This patch also includes additional changes to allow the code to compile
when sizeof(mp_uint_t) != sizeof(void*), such as using size_t instead of
mp_uint_t, and various casts.
2015-11-29 14:25:35 +00:00
Damien George ade9a05236 py: Improve allocation policy of qstr data.
Previous to this patch all interned strings lived in their own malloc'd
chunk.  On average this wastes N/2 bytes per interned string, where N is
the number-of-bytes for a quanta of the memory allocator (16 bytes on 32
bit archs).

With this patch interned strings are concatenated into the same malloc'd
chunk when possible.  Such chunks are enlarged inplace when possible,
and shrunk to fit when a new chunk is needed.

RAM savings with this patch are highly varied, but should always show an
improvement (unless only 3 or 4 strings are interned).  New version
typically uses about 70% of previous memory for the qstr data, and can
lead to savings of around 10% of total memory footprint of a running
script.

Costs about 120 bytes code size on Thumb2 archs (depends on how many
calls to gc_realloc are made).
2015-07-14 22:56:32 +01:00
Dave Hylands 3ad94d6072 extmod: Add ubinascii.unhexlify
This also pulls out hex_digit from py/lexer.c and makes unichar_hex_digit
2015-05-20 09:29:22 +01:00
Damien George 7f9d1d6ab9 py: Overhaul and simplify printf/pfenv mechanism.
Previous to this patch the printing mechanism was a bit of a tangled
mess.  This patch attempts to consolidate printing into one interface.

All (non-debug) printing now uses the mp_print* family of functions,
mainly mp_printf.  All these functions take an mp_print_t structure as
their first argument, and this structure defines the printing backend
through the "print_strn" function of said structure.

Printing from the uPy core can reach the platform-defined print code via
two paths: either through mp_sys_stdout_obj (defined pert port) in
conjunction with mp_stream_write; or through the mp_plat_print structure
which uses the MP_PLAT_PRINT_STRN macro to define how string are printed
on the platform.  The former is only used when MICROPY_PY_IO is defined.

With this new scheme printing is generally more efficient (less layers
to go through, less arguments to pass), and, given an mp_print_t*
structure, one can call mp_print_str for efficiency instead of
mp_printf("%s", ...).  Code size is also reduced by around 200 bytes on
Thumb2 archs.
2015-04-16 14:30:16 +00:00
Damien George d891452a73 py: Add MICROPY_MALLOC_USES_ALLOCATED_SIZE to allow simpler malloc API. 2015-03-03 21:23:13 +00:00
Damien George 827b0f747b py: Change vstr_null_terminate -> vstr_null_terminated_str, returns str. 2015-01-29 13:57:23 +00:00
Damien George 0d3cb6726d py: Change vstr so that it doesn't null terminate buffer by default.
This cleans up vstr so that it's a pure "variable buffer", and the user
can decide whether they need to add a terminating null byte.  In most
places where vstr is used, the vstr did not need to be null terminated
and so this patch saves code size, a tiny bit of RAM, and makes vstr
usage more efficient.  When null termination is needed it must be
done explicitly using vstr_null_terminate.
2015-01-28 23:43:01 +00:00
Damien George 16677ce311 py: Be more precise about unicode type and disabled unicode behaviour. 2015-01-28 14:07:11 +00:00
David Steinberg c585ad1020 py: Move mp_float_t related defines to misc.h 2015-01-24 20:54:28 +00:00
Damien George 05005f679e py: Remove mp_obj_str_builder and use vstr instead.
With this patch str/bytes construction is streamlined.  Always use a
vstr to build a str/bytes object.  If the size is known beforehand then
use vstr_init_len to allocate only required memory.  Otherwise use
vstr_init and the vstr will grow as needed.  Then use
mp_obj_new_str_from_vstr to create a str/bytes object using the vstr
memory.

Saves code ROM: 68 bytes on stmhal, 108 bytes on bare-arm, and 336 bytes
on unix x64.
2015-01-21 23:18:02 +00:00
Damien George 0b9ee86133 py: Add mp_obj_new_str_from_vstr, and use it where relevant.
This patch allows to reuse vstr memory when creating str/bytes object.
This improves memory usage.

Also saves code ROM: 128 bytes on stmhal, 92 bytes on bare-arm, and 88
bytes on unix x64.
2015-01-21 23:17:27 +00:00
Damien George 9ddbe291c4 py: Add include guards to mpconfig,misc,qstr,obj,runtime,parsehelper. 2014-12-29 01:02:19 +00:00
Damien George 9bf5f2857d py: Add further checks for failed malloc in lexer init functions. 2014-10-09 16:53:37 +01:00
bvernoux f6f248b464 Fix error: unknown type name 'size_t' 2014-09-28 09:54:35 +02:00
Damien George b0261341d3 py: For malloc and vstr functions, use size_t exclusively for int type.
It seems most sensible to use size_t for measuring "number of bytes" in
malloc and vstr functions (since that's what size_t is for).  We don't
use mp_uint_t because malloc and vstr are not Micro Python specific.
2014-09-25 15:49:26 +01:00
Paul Sokolovsky 564e46452d py: Add generic helper to align a pointer. 2014-07-12 15:57:28 +03:00
Damien George 40f3c02682 Rename machine_(u)int_t to mp_(u)int_t.
See discussion in issue #50.
2014-07-03 13:25:24 +01:00
Paul Sokolovsky 9e215fa4c2 py: Make unichar_charlen() accept/return machine_uint_t. 2014-06-28 23:15:29 +03:00
Damien George e04a44e2f6 py: Small comments, name changes, use of machine_int_t. 2014-06-28 10:27:23 +01:00
Paul Sokolovsky ce81312d8a misc: Add count_lead_ones() function, useful for UTF-8 handling. 2014-06-27 00:04:20 +03:00
Chris Angelico c88987c1af py: Implement basic unicode functions. 2014-06-27 00:04:17 +03:00
Emmanuel Blot f6932d6506 Prefix ARRAY_SIZE with micropython prefix MP_ 2014-06-19 18:54:34 +02:00
Paul Sokolovsky 7ddbd1bee7 unicode: Add trivial implementation of unichar_charlen(). 2014-06-14 06:30:30 +03:00
Paul Sokolovsky b0bb458810 unicode: String API is const byte*.
We still have that char vs byte dichotomy, but majority of string operations
now use byte.
2014-06-14 06:22:11 +03:00
Kim Bauters a3f4b83018 add methods isspace(), isalpha(), isdigit(), isupper() and islower() to str 2014-05-31 07:30:57 +01:00
Paul Sokolovsky 6913521911 objstr: Implement .lower() and .upper(). 2014-05-10 19:49:07 +03:00
Damien George 1b82e9af5c py: Improve handling of memory error in parser.
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.
2014-05-10 17:36:41 +01:00
Paul Sokolovsky 6b344d7816 py, unix: Add -v option, print bytecode dump if used.
This will work if MICROPY_DEBUG_PRINTERS is defined, which is only for
unix/windows ports. This makes it convenient to user uPy normally, but
easily get bytecode dump on the spot if needed, without constant recompiles
back and forth.

TODO: Add more useful debug output, adjust verbosity level on which
specifically bytecode dump happens.
2014-05-05 00:57:00 +03:00
Damien George 04b9147e15 Add license header to (almost) all files.
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/.
2014-05-03 23:27:38 +01:00
Damien George 6d3c5e4301 Add ARRAY_SIZE macro, and use it where possible. 2014-04-26 10:47:29 +01:00
Damien George 58ba4c3b4c py: Check explicitly for memory allocation failure in parser.
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.
2014-04-10 14:27:31 +00:00
Damien George f0954e3fac py: Add emergency exception object for when heap allocation fails. 2014-04-10 14:38:25 +01:00
Damien George 12bab72d93 Improve GC finalisation code; add option to disable it. 2014-04-05 20:35:48 +01:00
Damien George 8123a3339d Merge pull request #425 from iabdalkader/del
Implement del
2014-04-05 18:49:39 +01:00
Damien George 6902eeda25 py: Add m_malloc_fail function to handle memory allocation error.
A malloc/realloc fail now throws MemoryError.
2014-04-04 10:52:59 +00:00
mux 4f7e9f5c44 Implement del 2014-04-03 23:55:12 +02:00
Damien George 094d450003 py: Wrap compile_scope_inline_asm in #if; remove comment from misc.h. 2014-04-02 17:31:27 +01:00
Damien George 280e7208d8 Add vstr_ins and vstr_cut_out; improve stmhal readline. 2014-03-15 14:33:09 +00:00
Damien George 510477557d py: Take out bitfield entries from their own structure.
Don't need to wrap bitfields in their own struct.  Compiler does the
correct thing without it.
2014-02-26 17:40:52 +00:00
Damien George 2613ffde43 py: Rename strtonum to mp_strtonum.
strtonum clashes with BSD function of same name, and our version is
different so warrants a unique name.  Addresses Issue #305.
2014-02-22 17:49:15 +00:00
Paul Sokolovsky 44739e280e Make DEBUG_printf() a proper function, implementation is port-dependent.
In particular, unix outputs to stderr, to allow to run testsuite against
micropython built with debug output (by redirecting stderr to /dev/null).
2014-02-16 18:20:49 +02:00
Damien George 354d15a964 Implement fixed buffer vstrs; use them for import path. 2014-02-06 21:11:19 +00:00
Damien George e09ffa1400 Search paths properly on import and execute __init__.py if it exists. 2014-02-05 23:57:48 +00:00
Paul Sokolovsky e11b17c25f Implement support for sys.path when loading modules.
sys.path is not initialized by rt_init(), that's left for platform-specific
startup code. (For example, bare metal port may have some hardcoded defaults,
and let user change sys.path directly; while port for OS with environment
feature can take path from environment). If it's not explicitly initialized,
modules will be imported only from a current directory.
2014-02-05 01:40:41 +02:00
Paul Sokolovsky 6e6b888e31 Add generic MIN()/MAX() functions. 2014-02-05 01:40:40 +02:00