Commit Graph

136 Commits

Author SHA1 Message Date
Damien George c8b60f013b py: Make viper codegen raise proper exception (ViperTypeError) on error.
This fixes a long standing problem that viper code generation gave
terrible error messages, and actually no errors on pyboard where
assertions are disabled.

Now all compile-time errors are raised as proper Python exceptions, and
are of type ViperTypeError.

Addresses issue #940.
2015-04-20 13:29:31 +00:00
Damien George 044c473de2 py: Add %q format support to mp_[v]printf, and use it. 2015-04-16 14:30:16 +00:00
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 b1bbe966c4 py: Combine load_attr and store_attr type methods into one (attr).
This simplifies the API for objects and reduces code size (by around 400
bytes on Thumb2, and around 2k on x86).  Performance impact was measured
with Pystone score, but change was barely noticeable.
2015-04-11 16:54:37 +01:00
Damien George 4d77e1a034 py: Use m_{new,renew,del} consistently.
This is so all memory requests go through the same interface.
2015-02-27 09:34:51 +00:00
Damien George 4852e09c79 py: Fix adding of traceback so that it appends to existing info.
This makes exception traceback info self contained (ie doesn't rely on
list object, which was a bit of a hack), reduces code size, and reduces
RAM footprint of exception by eliminating the list object.

Addresses part of issue #1126.
2015-02-27 00:36:39 +00:00
Paul Sokolovsky 71ebd4b7f0 py: Implement UnicodeError.
Still too shy to implement UnicodeEncodeError which was really needed for
micropython-lib case.
2015-02-23 23:20:16 +02:00
Paul Sokolovsky fa3b895145 objexcept: Optimize traceback allocation for exception.
Traceback allocation for exception will now never lead to recursive
MemoryError exception - if there's no memory for traceback, it simply
won't be created.
2015-02-15 22:41:14 +03:00
Paul Sokolovsky 29c4f92e13 objexcept: Optimize using messages without formatting substitutions.
They are directly cast to str object, skipping allocation of formatting
buffer.
2015-02-15 22:41:14 +03:00
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 50149a5730 py: Use mp_arg_check_num in some _make_new functions.
Reduces stmhal code size by about 250 bytes.
2015-01-20 14:11:27 +00:00
Damien George b4b10fd350 py: Put all global state together in state structures.
This patch consolidates all global variables in py/ core into one place,
in a global structure.  Root pointers are all located together to make
GC tracing easier and more efficient.
2015-01-07 20:33:00 +00:00
Damien George 51dfcb4bb7 py: Move to guarded includes, everywhere in py/ core.
Addresses issue #1022.
2015-01-01 20:32:09 +00:00
Damien George 109c1de015 py: Make gc.enable/disable just control auto-GC; alloc is still allowed.
gc.enable/disable are now the same as CPython: they just control whether
automatic garbage collection is enabled or not.  If disabled, you can
still allocate heap memory, and initiate a manual collection.
2014-10-31 21:30:46 +00:00
Damien George 124df6f8d0 py: Add mp_pending_exception global variable, for VM soft interrupt.
This allows to implement KeyboardInterrupt on unix, and a much safer
ctrl-C in stmhal port.  First ctrl-C is a soft one, with hope that VM
will notice it; second ctrl-C is a hard one that kills anything (for
both unix and stmhal).

One needs to check for a pending exception in the VM only for jump
opcodes.  Others can't produce an infinite loop (infinite recursion is
caught by stack check).
2014-10-25 23:37:57 +01:00
Damien George e7a478204a py: Remove unused and unneeded SystemError exception.
It's purpose is for internal errors that are not catastrophic (ie not as
bad as RuntimeError).  Since we don't use it, we don't need it.
2014-10-22 19:42:55 +01:00
Damien George 4859edb95b py: Fix dummy definition of BEGIN/END_ATOMIC_SECTION. 2014-10-15 17:33:24 +00:00
Damien George 8b03d944e2 py: Remove IOError since it's deprecated; use OSError instead.
In CPython IOError (and EnvironmentError) is deprecated and aliased to
OSError.  All modules that used to raise IOError now raise OSError (or a
derived exception).

In Micro Python we never used IOError (except 1 place, incorrectly) and
so don't need to keep it.

See http://legacy.python.org/dev/peps/pep-3151/ for background.
2014-09-30 13:59:30 +00:00
Damien George 4bcd04bcad py: Tidy up exception matching; allow matching of tuple of exceptions.
Addresses issue #864.
2014-09-25 15:49:26 +01:00
Damien George d182b98a37 py: Change all uint to mp_uint_t in obj.h.
Part of code cleanup, working towards resolving issue #50.
2014-08-30 14:19:41 +01:00
Damien George 9c4cbe2ac0 py: Make tuple and list use mp_int_t/mp_uint_t.
Part of code cleanup, to resolve issue #50.
2014-08-30 14:04:14 +01:00
Damien George ecc88e949c Change some parts of the core API to use mp_uint_t instead of uint/int.
Addressing issue #50, still some way to go yet.
2014-08-30 00:35:11 +01:00
Damien George e5cbb70328 stmhal: Make enable_irq and disable_irq inline functions.
These functions are generally 1 machine instruction, and are used in
critical code, so makes sense to have them inline.

Also leave these functions uninverted (ie 0 means enable, 1 means
disable) and provide macro constants if you really need to distinguish
the states.  This makes for smaller code as well (combined with
inlining).

Applied to teensy port as well.
2014-08-25 13:24:33 +01:00
Dave Hylands 9480138f0c Add save/restore_irq
Factored irq functions into a separate file.
2014-08-25 12:22:11 +01:00
Dave Hylands 5b7fd20fea Add support for storing args during an exception raised by an irq.
The user code should call micropython.alloc_emergency_exception_buf(size)
where size is the size of the buffer used to print the argument
passed to the exception.

With the test code from #732, and a call to
micropython.alloc_emergenncy_exception_buf(100) the following error is
now printed:
```python
>>> import heartbeat_irq
Uncaught exception in Timer(4) interrupt handler
Traceback (most recent call last):
  File "0://heartbeat_irq.py", line 14, in heartbeat_cb
NameError: name 'led' is not defined
```
2014-07-25 14:00:06 -07:00
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
Damien George f0b29729aa py, objexcept: Only check for locked gc if gc is enabled. 2014-07-01 14:28:09 +01:00
Dave Hylands 2fe841d2fa Try not to cause a MemoryError when raising an exception during nterrupt handling.
Step 1 fixes #732
2014-06-30 22:49:21 -07:00
Chris Angelico daf973ae00 Change comments (mainly URLs) to no longer specifically say Python 3.3 2014-06-06 03:51:03 +10:00
Damien George 2617eebf2f Change const byte* to const char* where sensible.
This removes need for some casts (at least, more than it adds need
for new casts!).
2014-05-25 22:27:57 +01:00
Damien George 7a4ddd2428 Add SystemExit exception and use it in unix/ and stmhal/ ports.
Addresses issue #598.
2014-05-24 23:32:19 +01:00
Damien George 0fd01683c6 Merge pull request #607 from Anton-2/osx-clang
Allow compilation of unix port under clang on OS X
2014-05-21 19:51:05 +01:00
Paul Sokolovsky 52386cafa0 objexcept: Implement explicit __init__ method, useful for subclasses. 2014-05-19 21:56:07 +03:00
Antonin ENFRUN da1fffaa09 Fix some unused variables, and silence a clang warning about initialization override in vmentrytable.h 2014-05-12 09:06:18 +02:00
Damien George 2323ef9182 py: Rename globally-accessible tuple functions, prefix with mp_obj_.
Likely there are other functions that should be renamed, but this is a
start.
2014-05-11 18:00:45 +01:00
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
Paul Sokolovsky f54bcbf099 py, unix: Make "mpconfig.h" be first included, as other headers depend on it.
Specifically, nlr.h does.
2014-05-02 17:48:40 +03:00
Paul Sokolovsky 91e556af23 objexcept: Support tracebacks for user Exception subclasses. 2014-05-02 02:31:30 +03:00
Paul Sokolovsky d8351ca8a0 objtype: .print() Exception instances in adhoc way.
This is ugly, just as expected.
2014-05-02 02:00:47 +03:00
Paul Sokolovsky 1acf22f17b objexcept: Don't store args tuple within exception object.
To avoid pointer-to-field GC problem.
2014-04-23 04:07:00 +03:00
Paul Sokolovsky dec31bb872 objexcept: Add mp_obj_new_exception_arg1() convenience function. 2014-04-22 00:02:51 +03:00
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 ea13f407a3 py: Change nlr_jump to nlr_raise, to aid in debugging.
This does not affect code size or performance when debugging turned off.

To address issue #420.
2014-04-05 18:32:08 +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
Paul Sokolovsky a96d3d0840 objexcept: No more magic messages in exceptions, only exception arguments.
One of the reason for separate "message" (besides still unfulfilled desire to
optimize memory usage) was apparent special handling of exception with
messages by CPython. Well, the message is still just an exception argument,
it just printed specially. Implement that with PRINT_EXC printing format.
2014-03-31 02:23:56 +03:00
Damien George d17926db71 Rename rt_* to mp_*.
Mostly just a global search and replace.  Except rt_is_true which
becomes mp_obj_is_true.

Still would like to tidy up some of the names, but this will do for now.
2014-03-30 13:35:08 +01:00
Paul Sokolovsky 24a140a444 objexcept: Fix another place missing proper args tuple initialization. 2014-03-30 13:29:33 +03:00
Damien George 07ddab529c py: Change mp_const_* objects to macros.
Addresses issue #388.
2014-03-29 13:15:08 +00:00
Paul Sokolovsky c4d589e2bb objgenerator: close(): Throw instance of GeneratorExit (not type).
To comply with Python semantics and allow use of mp_obj_is_subclass_fast()
for exception matching.
2014-03-28 02:40:26 +02:00
Damien George c63f984647 py: Thin out predefined exceptions.
Only exceptions that are actually used are left prefedined.  Hierarchy
is still there, and removed exceptions are just commented out.
2014-03-27 23:49:06 +00:00
Damien George 9c817b9465 Merge branch 'master' of github.com:micropython/micropython 2014-03-26 18:56:02 +00:00
Damien George 752ba554cc Merge branch 'gen-close-ret-val' of github.com:pfalcon/micropython into pfalcon-gen-close-ret-val 2014-03-26 18:46:06 +00:00
Damien George 9e6e935df0 py: Add support for user-defined iterators via __iter__, __next__. 2014-03-26 18:37:06 +00:00
Paul Sokolovsky af1ae30399 objexcept: Add mp_obj_exception_get_value() convenience function.
This gets "value" of exceptions in the sense as it's defined for
StopIteration.value (i.e. args[0] or None).

TODO: This really should be inline function.
2014-03-26 19:29:36 +02:00
Paul Sokolovsky 962b1cd1b1 objgenerator: Implement return with value and .close() method.
Return with value gets converted to StopIteration(value). Implementation
keeps optimizing against creating of possibly unneeded exception objects,
so there're considerable refactoring to implement these features.
2014-03-26 15:40:58 +02:00
Damien George ffb5cfc8d8 py: Removed some unnecessary exception objects.
They still exist in commented-out form in objexcept.c if they are ever
needed.
2014-03-25 14:29:40 +00:00
Paul Sokolovsky 9512e9e817 objexcept: Add "args" exception attribute, as well as StopIteration.value. 2014-03-25 01:42:01 +02:00
Damien George c91097223d py: Remove some unnecessary exception objects. 2014-03-22 23:40:02 +00:00
Rachel Dowdall 721c55dced Added exception hierarchy except for OSError and UnicodeError (requires arguments). Comment out the errors that aren't needed if memory becomes an issue. 2014-03-22 15:28:16 +00:00
Rachel Dowdall 300c8bd4c2 Added ZeroDivisionError to float division. 2014-03-20 22:40:38 +00:00
xbe efe3422394 py: Clean up includes.
Remove unnecessary includes. Add includes that improve portability.
2014-03-17 02:43:40 -07:00
Damien George 0ec6bd47cb py: Fix printing of type name. 2014-03-09 16:29:36 +00:00
Damien George c8f78bc280 py: VM never throws an exception, instead returns a status and value.
Addresses issue #290, and hopefully sets up things to allow generators
throwing exceptions, etc.
2014-02-15 22:55:00 +00:00
Damien George 22a0865d54 py: Improve exception bases, reduces ROM usage.
Thanks to @pfalcon for the tip!
2014-02-15 21:05:25 +00:00
Damien George c5966128c7 Implement proper exception type hierarchy.
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.
2014-02-15 16:10:44 +00:00
Damien George a71c83a1d1 Change mp_obj_type_t.name from const char * to qstr.
Ultimately all static strings should be qstr.  This entry in the type
structure is only used for printing error messages (to tell the type of
the bad argument), and printing objects that don't supply a .print method.
2014-02-15 11:34:50 +00:00
Paul Sokolovsky 60a0d3f1db objexcept: Fix a case of initialized object field. 2014-02-15 00:29:50 +02:00
Damien George 099a9cb575 Remove mp_obj_new_exception_msg_1_arg and _2_arg. 2014-02-12 23:02:19 +00:00
Paul Sokolovsky d5df6cd44a Replace global "static" -> "STATIC", to allow "analysis builds". Part 1.
Some tools do not support local/static symbols (one example is GNU ld map file).
Exposing all functions will allow to do detailed size comparisons, etc.

Also, added bunch of statics where they were missing, and replaced few identity
functions with global mp_identity().
2014-02-12 18:21:11 +02:00
Paul Sokolovsky 027594e1a7 Typo fixes in comments. 2014-01-31 19:47:23 +02:00
Damien George 1ba1facaaa py: Msg in exception is no longer interned. 2014-01-29 18:57:20 +00:00
Damien George 55baff4c9b Revamp qstrs: they now include length and hash.
Can now have null bytes in strings.  Can define ROM qstrs per port using
qstrdefsport.h
2014-01-21 21:40:13 +00:00
Damien George 136b149e41 py: Add full traceback to exception printing. 2014-01-19 12:38:49 +00:00
Damien George cbd2f7482c py: Add module/function/class name to exceptions.
Exceptions know source file, line and block name.

Also tidy up some debug printing functions and provide a global
flag to enable/disable them.
2014-01-19 11:48:48 +00:00
Damien George 08335004cf Add source file name and line number to error messages.
Byte code has a map from byte-code offset to source-code line number,
used to give better error messages.
2014-01-18 23:24:36 +00:00
Damien George 20006dbba9 Make VM stack grow upwards, and so no reversed args arrays.
Change state layout in VM so the stack starts at state[0] and grows
upwards.  Locals are at the top end of the state and number downwards.
This cleans up a lot of the interface connecting the VM to C: now all
functions that take an array of Micro Python objects are in order (ie no
longer in reverse).

Also clean up C API with keyword arguments (call_n and call_n_kw
replaced with single call method that takes keyword arguments).  And now
make_new takes keyword arguments.

emitnative.c has not yet been changed to comply with the new order of
stack layout.
2014-01-18 14:10:48 +00:00
Paul Sokolovsky 76d982ef34 type->print(): Distinguish str() and repr() variety by passing extra param. 2014-01-15 02:15:38 +02:00
Paul Sokolovsky ddf2178d83 Refactor exception objects to have better impl of Python-side interface.
This implements internal args tuple of arguments, while still keeping
object useful for reporting C-side errors.

Further elaboration is needed.
2014-01-15 00:03:23 +02:00
Damien George 6c73ca1e75 py: add variable argument exception constructor function.
Addresses issue #104.
2014-01-08 18:11:23 +00:00
Damien George 97209d38e1 Merge branch 'cplusplus' of https://github.com/ian-v/micropython into ian-v-cplusplus
Conflicts:
	py/objcomplex.c
2014-01-07 15:58:30 +00:00
ian-v 7a16fadbf8 Co-exist with C++ (issue #85) 2014-01-06 09:52:29 -08:00
Paul Sokolovsky 860ffb0a43 Convert many object types structs to use C99 tagged initializer syntax. 2014-01-05 22:34:09 +02:00
Damien George 71c5181a8d Convert Python types to proper Python type hierarchy.
Now much more inline with how CPython does types.
2014-01-04 20:21:15 +00:00
Damien b86e3f9293 py: implement some basic exception matching. 2013-12-29 17:17:43 +00:00
Damien d99b05282d Change object representation from 1 big union to individual structs.
A big change.  Micro Python objects are allocated as individual structs
with the first element being a pointer to the type information (which
is itself an object).  This scheme follows CPython.  Much more flexible,
not necessarily slower, uses same heap memory, and can allocate objects
statically.

Also change name prefix, from py_ to mp_ (mp for Micro Python).
2013-12-21 18:17:45 +00:00