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/*

* This file is part of the Micro Python project, http://micropython.org/

*

* The MIT License (MIT)

*

* Copyright (c) 2013, 2014 Damien P. George

*

* Permission is hereby granted, free of charge, to any person obtaining a copy

* of this software and associated documentation files (the "Software"), to deal

* in the Software without restriction, including without limitation the rights

* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

* copies of the Software, and to permit persons to whom the Software is

* furnished to do so, subject to the following conditions:

*

* The above copyright notice and this permission notice shall be included in

* all copies or substantial portions of the Software.

*

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

* THE SOFTWARE.

*/

#include "py/mpstate.h"

#include "py/nlr.h"

#include "py/builtin.h"

#include "py/objlist.h"

#include "py/objtuple.h"

#include "py/objstr.h"

#include "py/objint.h"

#include "py/stream.h"

#if MICROPY_PY_SYS

#include "genhdr/mpversion.h"

/// \module sys - system specific functions

// defined per port; type of these is irrelevant, just need pointer

extern struct _mp_dummy_t mp_sys_stdin_obj;

extern struct _mp_dummy_t mp_sys_stdout_obj;

extern struct _mp_dummy_t mp_sys_stderr_obj;

#if MICROPY_PY_IO

const mp_print_t mp_sys_stdout_print = {&mp_sys_stdout_obj, mp_stream_write_adaptor};

#endif

/// \constant version - Python language version that this implementation conforms to, as a string

STATIC const MP_DEFINE_STR_OBJ(version_obj, "3.4.0");

/// \constant version_info - Python language version that this implementation conforms to, as a tuple of ints

#define I(n) MP_OBJ_NEW_SMALL_INT(n)

// TODO: CPython is now at 5-element array, but save 2 els so far...

STATIC const mp_obj_tuple_t mp_sys_version_info_obj = {{&mp_type_tuple}, 3, {I(3), I(4), I(0)}};

// sys.implementation object

// this holds the MicroPython version

STATIC const mp_obj_tuple_t mp_sys_implementation_version_info_obj = {

{&mp_type_tuple},

3,

{ I(MICROPY_VERSION_MAJOR), I(MICROPY_VERSION_MINOR), I(MICROPY_VERSION_MICRO) }

};

#if MICROPY_PY_ATTRTUPLE

STATIC const qstr impl_fields[] = { MP_QSTR_name, MP_QSTR_version };

STATIC MP_DEFINE_ATTRTUPLE(

mp_sys_implementation_obj,

impl_fields,

2,

MP_ROM_QSTR(MP_QSTR_micropython),

MP_ROM_PTR(&mp_sys_implementation_version_info_obj)

);

#else

STATIC const mp_obj_tuple_t mp_sys_implementation_obj = {

{&mp_type_tuple},

2,

{

MP_OBJ_NEW_QSTR(MP_QSTR_micropython),

(mp_obj_t)&mp_sys_implementation_version_info_obj,

}

};

#endif

#undef I

#ifdef MICROPY_PY_SYS_PLATFORM

/// \constant platform - the platform that Micro Python is running on

STATIC const MP_DEFINE_STR_OBJ(platform_obj, MICROPY_PY_SYS_PLATFORM);

#endif

/// \function exit([retval])

/// Raise a `SystemExit` exception. If an argument is given, it is the

/// value given to `SystemExit`.

STATIC mp_obj_t mp_sys_exit(size_t n_args, const mp_obj_t *args) {

mp_obj_t exc;

if (n_args == 0) {

exc = mp_obj_new_exception(&mp_type_SystemExit);

} else {

exc = mp_obj_new_exception_arg1(&mp_type_SystemExit, args[0]);

}

nlr_raise(exc);

}

MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_sys_exit_obj, 0, 1, mp_sys_exit);

STATIC mp_obj_t mp_sys_print_exception(size_t n_args, const mp_obj_t *args) {

#if MICROPY_PY_IO

void *stream_obj = &mp_sys_stdout_obj;

if (n_args > 1) {

stream_obj = MP_OBJ_TO_PTR(args[1]); // XXX may fail

}

mp_print_t print = {stream_obj, mp_stream_write_adaptor};

mp_obj_print_exception(&print, args[0]);

#else

(void)n_args;

mp_obj_print_exception(&mp_plat_print, args[0]);

#endif

return mp_const_none;

}

MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_sys_print_exception_obj, 1, 2, mp_sys_print_exception);

#if MICROPY_PY_SYS_EXC_INFO

STATIC mp_obj_t mp_sys_exc_info(void) {

mp_obj_t cur_exc = MP_OBJ_FROM_PTR(MP_STATE_VM(cur_exception));

mp_obj_tuple_t *t = MP_OBJ_TO_PTR(mp_obj_new_tuple(3, NULL));

if (cur_exc == MP_OBJ_NULL) {

t->items[0] = mp_const_none;

t->items[1] = mp_const_none;

t->items[2] = mp_const_none;

return MP_OBJ_FROM_PTR(t);

}

t->items[0] = MP_OBJ_FROM_PTR(mp_obj_get_type(cur_exc));

t->items[1] = cur_exc;

t->items[2] = mp_const_none;

return MP_OBJ_FROM_PTR(t);

}

MP_DEFINE_CONST_FUN_OBJ_0(mp_sys_exc_info_obj, mp_sys_exc_info);

#endif

STATIC const mp_rom_map_elem_t mp_module_sys_globals_table[] = {

{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_sys) },

{ MP_ROM_QSTR(MP_QSTR_path), MP_ROM_PTR(&MP_STATE_VM(mp_sys_path_obj)) },

{ MP_ROM_QSTR(MP_QSTR_argv), MP_ROM_PTR(&MP_STATE_VM(mp_sys_argv_obj)) },

{ MP_ROM_QSTR(MP_QSTR_version), MP_ROM_PTR(&version_obj) },

{ MP_ROM_QSTR(MP_QSTR_version_info), MP_ROM_PTR(&mp_sys_version_info_obj) },

{ MP_ROM_QSTR(MP_QSTR_implementation), MP_ROM_PTR(&mp_sys_implementation_obj) },

#ifdef MICROPY_PY_SYS_PLATFORM

{ MP_ROM_QSTR(MP_QSTR_platform), MP_ROM_PTR(&platform_obj) },

#endif

/// \constant byteorder - the byte order of the system ("little" or "big")

#if MP_ENDIANNESS_LITTLE

{ MP_ROM_QSTR(MP_QSTR_byteorder), MP_ROM_QSTR(MP_QSTR_little) },

#else

{ MP_ROM_QSTR(MP_QSTR_byteorder), MP_ROM_QSTR(MP_QSTR_big) },

#endif

#if MICROPY_PY_SYS_MAXSIZE

#if MICROPY_LONGINT_IMPL == MICROPY_LONGINT_IMPL_NONE

// INT_MAX is not representable as small int, as we know that small int

// takes one bit for tag. So, we have little choice but to provide this

// value. Apps also should be careful to not try to compare sys.maxsize

// with some number (which may not fit in available int size), but instead

// count number of significant bits in sys.maxsize.

{ MP_ROM_QSTR(MP_QSTR_maxsize), MP_OBJ_NEW_SMALL_INT(INT_MAX >> 1) },

#else

{ MP_ROM_QSTR(MP_QSTR_maxsize), MP_ROM_PTR(&mp_maxsize_obj) },

#endif

#endif

#if MICROPY_PY_SYS_EXIT

// documented per-port

{ MP_ROM_QSTR(MP_QSTR_exit), MP_ROM_PTR(&mp_sys_exit_obj) },

#endif

#if MICROPY_PY_SYS_STDFILES

// documented per-port

{ MP_ROM_QSTR(MP_QSTR_stdin), MP_ROM_PTR(&mp_sys_stdin_obj) },

{ MP_ROM_QSTR(MP_QSTR_stdout), MP_ROM_PTR(&mp_sys_stdout_obj) },

{ MP_ROM_QSTR(MP_QSTR_stderr), MP_ROM_PTR(&mp_sys_stderr_obj) },

#endif

#if MICROPY_PY_SYS_MODULES

{ MP_ROM_QSTR(MP_QSTR_modules), MP_ROM_PTR(&MP_STATE_VM(mp_loaded_modules_dict)) },

#endif

#if MICROPY_PY_SYS_EXC_INFO

{ MP_ROM_QSTR(MP_QSTR_exc_info), MP_ROM_PTR(&mp_sys_exc_info_obj) },

#endif

/*

* Extensions to CPython

*/

{ MP_ROM_QSTR(MP_QSTR_print_exception), MP_ROM_PTR(&mp_sys_print_exception_obj) },

};

STATIC MP_DEFINE_CONST_DICT(mp_module_sys_globals, mp_module_sys_globals_table);

const mp_obj_module_t mp_module_sys = {

.base = { &mp_type_module },

.name = MP_QSTR_sys,

.globals = (mp_obj_dict_t*)&mp_module_sys_globals,

};

#endif