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Jeff Epler 238e121236 protocols: Allow them to be (optionally) type-safe 
Protocols are nice, but there is no way for C code to verify whether
a type's "protocol" structure actually implements some particular
protocol.  As a result, you can pass an object that implements the
"vfs" protocol to one that expects the "stream" protocol, and the
opposite of awesomeness ensues.

This patch adds an OPTIONAL (but enabled by default) protocol identifier
as the first member of any protocol structure.  This identifier is
simply a unique QSTR chosen by the protocol designer and used by each
protocol implementer.  When checking for protocol support, instead of
just checking whether the object's type has a non-NULL protocol field,
use `mp_proto_get` which implements the protocol check when possible.

The existing protocols are now named:
    protocol_framebuf
    protocol_i2c
    protocol_pin
    protocol_stream
    protocol_spi
    protocol_vfs
(most of these are unused in CP and are just inherited from MP; vfs and
stream are definitely used though)

I did not find any crashing examples, but here's one to give a flavor of what
is improved, using `micropython_coverage`.  Before the change,
the vfs "ioctl" protocol is invoked, and the result is not intelligible
as json (but it could have resulted in a hard fault, potentially):

    >>> import uos, ujson
    >>> u = uos.VfsPosix('/tmp')
    >>> ujson.load(u)
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
    ValueError: syntax error in JSON

After the change, the vfs object is correctly detected as not supporting
the stream protocol:
    >>> ujson.load(p)
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
    OSError: stream operation not supported
2019-12-04 09:29:57 -06:00
..
argcheck.c py changes for supporting superclass constructors that take kwargs 2019-01-14 17:29:19 -08:00
asmarm.c py/asm*.c: Remove unnecessary check for num_locals<0 in asm entry func. 2018-02-24 23:10:20 +11:00
asmarm.h continued WIP: almost compiling 2018-07-12 14:13:51 -04:00
asmbase.c py/asmbase: Revert removal of clearing of label offsets for native emit. 2017-12-08 19:07:00 +11:00
asmbase.h py/asm: Remove need for dummy_data when doing initial assembler passes. 2016-12-09 22:50:58 +11:00
asmthumb.c py/asm*.c: Remove unnecessary check for num_locals<0 in asm entry func. 2018-02-24 23:10:20 +11:00
asmthumb.h continued WIP: almost compiling 2018-07-12 14:13:51 -04:00
asmx64.c py/asm*.c: Remove unnecessary check for num_locals<0 in asm entry func. 2018-02-24 23:10:20 +11:00
asmx64.h continued WIP: almost compiling 2018-07-12 14:13:51 -04:00
asmx86.c py/asm*.c: Remove unnecessary check for num_locals<0 in asm entry func. 2018-02-24 23:10:20 +11:00
asmx86.h WIP: complete manual inspection of all significant changes 2018-07-23 21:34:25 -04:00
asmxtensa.c py/asm: Remove need for dummy_data when doing initial assembler passes. 2016-12-09 22:50:58 +11:00
asmxtensa.h continued WIP: almost compiling 2018-07-12 14:13:51 -04:00
bc0.h py: Clean up unary and binary enum list to keep groups together. 2017-10-05 10:49:44 +11:00
bc.c Two fixes and translate more strings. 2018-08-09 13:29:30 -07:00
bc.h all: Remove inclusion of internal py header files. 2017-10-04 12:37:50 +11:00
binary.c mp_binary_get_int: avoid undefined behavior 2019-10-08 10:48:25 +09:00
binary.h py/binary: Change internal bytearray typecode from 0 to 1. 2017-08-17 16:19:35 +10:00
builtin.h py/builtinhelp: Change signature of help text var from pointer to array. 2017-09-12 16:03:52 +10:00
builtinevex.c Two fixes and translate more strings. 2018-08-09 13:29:30 -07:00
builtinhelp.c Fix output overflow and make help translatable 2018-11-09 16:41:08 -08:00
builtinimport.c modsys: exc_info: Add traceback 2018-10-07 19:37:49 +02:00
circuitpy_defns.mk Refine _bleio 2019-10-21 18:57:03 -07:00
circuitpy_mpconfig.h run_background_tasks: Do nothing unless there has been a tick 2019-11-18 11:26:48 -06:00
circuitpy_mpconfig.mk Merge remote-tracking branch 'adafruit/master' into testing-fixes 2019-11-22 11:55:34 -05:00
compile.c Make the @micropython.native decorator no-op if support isn't enabled 2019-11-26 13:09:30 -08:00
compile.h all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
emit.h py/emit: Combine setup with/except/finally into one emit function. 2018-05-23 00:35:16 +10:00
emitbc.c py/emit: Combine setup with/except/finally into one emit function. 2018-05-23 00:35:16 +10:00
emitcommon.c py/emit: Combine name and global into one func for load/store/delete. 2018-05-23 00:22:47 +10:00
emitglue.c Validate raw code and mpy read length 2019-06-25 17:54:27 -07:00
emitglue.h py/emitglue: When assigning bytecode only pass bytecode len if needed. 2018-02-14 18:41:17 +11:00
emitinlinethumb.c fix compilation errors in emitinlinethumb.c 2018-10-07 02:09:44 +03:00
emitinlinextensa.c Fix esp and samd 2018-08-16 17:41:35 -07:00
emitnarm.c py: Refactor how native emitter code is compiled with a file per arch. 2018-04-10 15:06:47 +10:00
emitnative.c Allow boards to enable the micropython.native decorator 2019-11-05 14:27:53 -08:00
emitnthumb.c py: Refactor how native emitter code is compiled with a file per arch. 2018-04-10 15:06:47 +10:00
emitnx64.c py: Refactor how native emitter code is compiled with a file per arch. 2018-04-10 15:06:47 +10:00
emitnx86.c py/emitnx86: Fix 32-bit x86 native emitter build by including header. 2018-05-04 20:39:16 +10:00
emitnxtensa.c py: Refactor how native emitter code is compiled with a file per arch. 2018-04-10 15:06:47 +10:00
formatfloat.c py/formatfloat: Fix case where floats could render with negative digits. 2018-03-01 17:00:02 +11:00
formatfloat.h all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
frozenmod.c merge finished 2018-07-28 13:29:47 -04:00
frozenmod.h Fix issue #207, esp8266 file operations problems (#222) 2017-09-01 16:12:26 -04:00
gc_long_lived.c * only make objects long lived if they are on the GC heap 2019-11-22 13:47:13 -05:00
gc_long_lived.h Introduce a long lived section of the heap. 2018-01-24 10:33:46 -08:00
gc.c * only make objects long lived if they are on the GC heap 2019-11-22 13:47:13 -05:00
gc.h * only make objects long lived if they are on the GC heap 2019-11-22 13:47:13 -05:00
grammar.h py/compile: Combine expr, xor_expr and and_expr into one function. 2018-06-22 17:00:29 +10:00
ioctl.h Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 2017-08-25 22:17:07 -04:00
lexer.c Two fixes and translate more strings. 2018-08-09 13:29:30 -07:00
lexer.h all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
makemoduledefs.py Add files via upload 2019-04-05 21:38:32 +02:00
makeqstrdata.py makeqstrdata: reclaim some more bytes on some translations 2019-12-02 14:49:23 -06:00
makeqstrdefs.py Update filter and handle nested quotes 2018-08-09 14:16:28 -07:00
makeversionhdr.py Support internationalisation. 2018-08-07 14:58:57 -07:00
malloc.c WIP: after merge; before testing 2018-07-11 16:45:30 -04:00
map.c py/map: Don't include ordered-dict mutating code when not needed. 2017-12-19 13:37:15 +11:00
misc.h WIP: after merge; before testing 2018-07-11 16:45:30 -04:00
mkenv.mk Use python3 for mpy-tool 2018-10-18 10:37:42 -07:00
mkrules.mk Update mkrules.mk 2019-04-05 21:41:40 +02:00
modarray.c all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
modbuiltins.c Enable MICROPY_PY_BUILTINS_ROUND_INT; make round() work beter when it's disabled as well 2019-05-17 15:56:40 -04:00
modcmath.c py: Change obsolete "///" comment formatting to normal comments. 2017-08-30 21:02:00 +10:00
modcollections.c WIP: after merge; before testing 2018-07-11 16:45:30 -04:00
modgc.c py: Change obsolete "///" comment formatting to normal comments. 2017-08-30 21:02:00 +10:00
modio.c protocols: Allow them to be (optionally) type-safe 2019-12-04 09:29:57 -06:00
modmath.c Two fixes and translate more strings. 2018-08-09 13:29:30 -07:00
modmicropython.c Two fixes and translate more strings. 2018-08-09 13:29:30 -07:00
modstruct.c Improve struct compatibility with CPython 2019-01-20 15:12:34 -05:00
modsys.c modsys: exc_info: Add traceback 2018-10-07 19:37:49 +02:00
modthread.c Two fixes and translate more strings. 2018-08-09 13:29:30 -07:00
moduerrno.c Add CIRCUITPY macro; rename u* only when CIRCUITPY=1 2019-02-21 11:09:44 -05:00
mpconfig.h Add CIRCUITPY macro; rename u* only when CIRCUITPY=1 2019-02-21 11:09:44 -05:00
mperrno.h Support OSError attributes 2018-11-13 22:04:44 +01:00
mphal.h all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
mpprint.c py/mpprint: Fix "%x" vs "%X" regression introduced in previous commit. 2017-12-07 10:31:14 +02:00
mpprint.h all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
mpstate.c all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
mpstate.h Reorganize board busses into shared-bindings and shared-module. 2019-04-08 16:58:50 -07:00
mpthread.h all: Unify header guard usage. 2017-07-18 11:57:39 +10:00
mpz.c py/mpz: Avoid undefined behavior at integer overflow in mpz_hash. 2018-05-21 12:48:26 +10:00
mpz.h py/mpz: Simplify handling of borrow and quo adjustment in mpn_div. 2017-12-29 14:05:48 +11:00
nativeglue.c py/emit: Merge build set/slice into existing build emit function. 2018-05-23 00:23:36 +10:00
nlr.c continued WIP: almost compiling 2018-07-12 14:13:51 -04:00
nlr.h restructure nlr.h for udefined archtectures 2019-10-14 07:02:32 -04:00
nlrsetjmp.c py/nlr: Factor out common NLR code to macro and generic funcs in nlr.c. 2017-12-28 16:46:30 +11:00
nlrthumb.c WIP: after merge; before testing 2018-07-11 16:45:30 -04:00
nlrx64.c continued WIP: almost compiling 2018-07-12 14:13:51 -04:00
nlrx86.c continued WIP: almost compiling 2018-07-12 14:13:51 -04:00
nlrxtensa.c continued WIP: almost compiling 2018-07-12 14:13:51 -04:00
obj.c In py/, must guard uses of RUN_BACKGROUND_TASKS 2019-09-11 21:15:10 -05:00
obj.h bleio: API change to create and connect related objects simulatenously: no orphan bleio objects 2019-08-28 16:15:09 -04:00
objarray.c py changes for supporting superclass constructors that take kwargs 2019-01-14 17:29:19 -08:00
objarray.h py/objarray: Replace 0x80 with new MP_OBJ_ARRAY_TYPECODE_FLAG_RW macro. 2018-06-18 13:40:53 +10:00
objattrtuple.c all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
objbool.c py changes for supporting superclass constructors that take kwargs 2019-01-14 17:29:19 -08:00
objboundmeth.c py/objboundmeth: Support __func__ property as in CPython 2018-10-07 19:36:24 +02:00
objcell.c all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
objclosure.c all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
objcomplex.c py changes for supporting superclass constructors that take kwargs 2019-01-14 17:29:19 -08:00
objdeque.c More make_new fixes for unix build 2019-01-18 11:53:09 -08:00
objdict.c Fix dict_make_new 2019-01-20 17:32:43 -08:00
objenumerate.c fixup micropy 2019-01-14 18:09:02 -08:00
objexcept.c Make MpyError a ValueError (since that's what it was before) 2019-05-08 13:58:31 -07:00
objexcept.h py/objexcept: Make MP_DEFINE_EXCEPTION public so ports can define excs. 2018-03-17 00:31:40 +11:00
objfilter.c py changes for supporting superclass constructors that take kwargs 2019-01-14 17:29:19 -08:00
objfloat.c py changes for supporting superclass constructors that take kwargs 2019-01-14 17:29:19 -08:00
objfun.c Fix bad call to mp_arg_check_num 2019-11-05 17:49:47 -08:00
objfun.h all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
objgenerator.c Two fixes and translate more strings. 2018-08-09 13:29:30 -07:00
objgenerator.h all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
objgetitemiter.c all: Remove inclusion of internal py header files. 2017-10-04 12:37:50 +11:00
objint_longlong.c Two fixes and translate more strings. 2018-08-09 13:29:30 -07:00
objint_mpz.c Two fixes and translate more strings. 2018-08-09 13:29:30 -07:00
objint.c use approx of original @godlygeek code for smallints; add tests 2019-05-12 11:17:29 -04:00
objint.h Handle truth values; speed up smallint checks 2019-05-12 00:10:53 -04:00
objlist.c WIP: rework of Characteristic properties; enhance Descriptor; not tested 2019-08-02 17:57:31 -04:00
objlist.h py/obj.h: Move declaration of mp_obj_list_init to objlist.h. 2018-03-13 14:03:15 +11:00
objmap.c py changes for supporting superclass constructors that take kwargs 2019-01-14 17:29:19 -08:00
objmodule.c Update objmodule.c 2019-04-05 21:40:28 +02:00
objmodule.h py/objmodule: Factor common code for calling __init__ on builtin module. 2018-02-20 17:56:58 +11:00
objnamedtuple.c Check for null kw_args 2019-01-20 16:18:34 -08:00
objnamedtuple.h py changes for supporting superclass constructors that take kwargs 2019-01-14 17:29:19 -08:00
objnone.c all: Remove inclusion of internal py header files. 2017-10-04 12:37:50 +11:00
objobject.c py changes for supporting superclass constructors that take kwargs 2019-01-14 17:29:19 -08:00
objpolyiter.c all: Remove inclusion of internal py header files. 2017-10-04 12:37:50 +11:00
objproperty.c py changes for supporting superclass constructors that take kwargs 2019-01-14 17:29:19 -08:00
objproperty.h Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 2017-08-25 22:17:07 -04:00
objrange.c py changes for supporting superclass constructors that take kwargs 2019-01-14 17:29:19 -08:00
objreversed.c py changes for supporting superclass constructors that take kwargs 2019-01-14 17:29:19 -08:00
objset.c py changes for supporting superclass constructors that take kwargs 2019-01-14 17:29:19 -08:00
objsingleton.c all: Remove inclusion of internal py header files. 2017-10-04 12:37:50 +11:00
objslice.c py changes for supporting superclass constructors that take kwargs 2019-01-14 17:29:19 -08:00
objstr.c Switch arg check back to allow ignored args for strings 2019-10-14 19:59:23 -07:00
objstr.h cleanup adapter.address; add uniquish suffix to BLE device name 2019-07-31 00:30:24 -04:00
objstringio.c protocols: Allow them to be (optionally) type-safe 2019-12-04 09:29:57 -06:00
objstringio.h py/objstringio: If created from immutable object, follow copy on write policy. 2017-06-09 17:33:01 +03:00
objstrunicode.c extmod/ure: Support search/match() pos and endpos parameters 2019-02-14 15:42:28 +01:00
objtuple.c py: mp_obj_tuple_get: accept any item which can use tuple_getiter 2019-08-10 10:10:41 -05:00
objtuple.h WIP: works with just keyboard but not complex report descriptor 2018-03-30 23:24:00 -04:00
objtype.c mp_obj_instance_make_new: clearer way to avoid null pointer dereference 2019-10-10 13:25:24 +09:00
objtype.h Check native object in case of early access 2019-05-13 17:31:30 -07:00
objzip.c py changes for supporting superclass constructors that take kwargs 2019-01-14 17:29:19 -08:00
opmethods.c py/runtime: Add MP_BINARY_OP_CONTAINS as reverse of MP_BINARY_OP_IN. 2017-11-24 14:48:23 +11:00
parse.c Two fixes and translate more strings. 2018-08-09 13:29:30 -07:00
parse.h all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
parsenum.c Compress all translated strings with Huffman coding. 2018-08-16 17:40:57 -07:00
parsenum.h all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
parsenumbase.c all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
parsenumbase.h all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
persistentcode.c Validate raw code and mpy read length 2019-06-25 17:54:27 -07:00
persistentcode.h py: Factor out persistent-code reader into separate files. 2016-11-16 18:13:50 +11:00
proto.c protocols: Allow them to be (optionally) type-safe 2019-12-04 09:29:57 -06:00
proto.h protocols: Allow them to be (optionally) type-safe 2019-12-04 09:29:57 -06:00
py.mk protocols: Allow them to be (optionally) type-safe 2019-12-04 09:29:57 -06:00
pystack.c py/pystack: Use "pystack exhausted" as error msg for out of pystack mem. 2018-02-19 00:26:14 +11:00
pystack.h py: Introduce a Python stack for scoped allocation. 2017-12-11 13:49:09 +11:00
qstr.c Compress all translated strings with Huffman coding. 2018-08-16 17:40:57 -07:00
qstr.h Support internationalisation. 2018-08-07 14:58:57 -07:00
qstrdefs.h py/pystack: Use "pystack exhausted" as error msg for out of pystack mem. 2018-02-19 00:26:14 +11:00
reader.c py/reader: Allow MICROPY_VFS_POSIX to work with MICROPY_READER_POSIX. 2018-06-06 14:28:23 +10:00
reader.h py: Allow lexer to raise exceptions during construction. 2017-03-14 11:52:05 +11:00
reload.c move reload exception to reload.c 2018-05-14 17:41:17 -04:00
reload.h move reload exception to reload.c 2018-05-14 17:41:17 -04:00
repl.c Merge pull request #1859 from scottbelden/tabbing 2019-05-08 14:49:11 -04:00
repl.h all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
ringbuf.h Refine _bleio 2019-10-21 18:57:03 -07:00
runtime0.h WIP: after merge; before testing 2018-07-11 16:45:30 -04:00
runtime_utils.c WIP: after merge; before testing 2018-07-11 16:45:30 -04:00
runtime.c Use BluetoothError in _bleio 2019-11-20 14:02:15 -08:00
runtime.h Use OverflowError exception type for overflows 2019-05-09 03:22:26 -04:00
scheduler.c py: Add micropython.schedule() function and associated runtime code. 2017-03-20 15:20:26 +11:00
scope.c all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
scope.h all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
sequence.c Use generic overflow so 64 bit is handled ok. 2019-02-04 16:11:16 -08:00
showbc.c mp_bytecode_print_str: avoid undefined behavior 2019-10-08 11:16:11 +09:00
smallint.c all: Use the name MicroPython consistently in comments 2017-07-31 18:35:40 +10:00
smallint.h py: Extend nan-boxing config to have 47-bit small integers. 2017-12-11 22:39:12 +11:00
stackctrl.c WIP: after merge; before testing 2018-07-11 16:45:30 -04:00
stackctrl.h Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 2017-08-25 22:17:07 -04:00
stream.c protocols: Allow them to be (optionally) type-safe 2019-12-04 09:29:57 -06:00
stream.h protocols: Allow them to be (optionally) type-safe 2019-12-04 09:29:57 -06:00
unicode.c py/unicode: Clean up utf8 funcs and provide non-utf8 inline versions. 2018-02-14 18:19:22 +11:00
unicode.h py/objstr: Add check for valid UTF-8 when making a str from bytes. 2017-09-06 16:43:09 +10:00
vm.c Refine _bleio 2019-10-21 18:57:03 -07:00
vmentrytable.h Turn on MICROPY_OPT_COMPUTED_GOTO for 5x CPU-bound speedup 2019-06-11 12:43:48 -04:00
vstr.c py/vstr: Raise a RuntimeError if fixed vstr buffer overflows. 2017-09-21 20:29:41 +10:00
warning.c py: Add config option to print warnings/errors to stderr. 2017-09-26 11:59:11 +10:00