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 parse-bytecode

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/*

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

*

* The MIT License (MIT)

*

* Copyright (c) 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 <stdio.h>

#include <string.h>

#include <assert.h>

#include "py/nlr.h"

#include "py/runtime0.h"

#include "py/runtime.h"

#include "py/emitglue.h"

#include "py/bc.h"

#if 0 // print debugging info

#define DEBUG_printf DEBUG_printf

#else // don't print debugging info

#define DEBUG_printf(...) (void)0

#endif

#if MICROPY_EMIT_NATIVE

// convert a Micro Python object to a valid native value based on type

mp_uint_t mp_convert_obj_to_native(mp_obj_t obj, mp_uint_t type) {

DEBUG_printf("mp_convert_obj_to_native(%p, " UINT_FMT ")\n", obj, type);

switch (type & 0xf) {

case MP_NATIVE_TYPE_OBJ: return (mp_uint_t)obj;

case MP_NATIVE_TYPE_BOOL:

case MP_NATIVE_TYPE_INT:

case MP_NATIVE_TYPE_UINT: return mp_obj_get_int_truncated(obj);

default: { // cast obj to a pointer

mp_buffer_info_t bufinfo;

if (mp_get_buffer(obj, &bufinfo, MP_BUFFER_RW)) {

return (mp_uint_t)bufinfo.buf;

} else {

// assume obj is an integer that represents an address

return mp_obj_get_int_truncated(obj);

}

}

}

}

#endif

#if MICROPY_EMIT_NATIVE || MICROPY_EMIT_INLINE_THUMB

// convert a native value to a Micro Python object based on type

mp_obj_t mp_convert_native_to_obj(mp_uint_t val, mp_uint_t type) {

DEBUG_printf("mp_convert_native_to_obj(" UINT_FMT ", " UINT_FMT ")\n", val, type);

switch (type & 0xf) {

case MP_NATIVE_TYPE_OBJ: return (mp_obj_t)val;

case MP_NATIVE_TYPE_BOOL: return mp_obj_new_bool(val);

case MP_NATIVE_TYPE_INT: return mp_obj_new_int(val);

case MP_NATIVE_TYPE_UINT: return mp_obj_new_int_from_uint(val);

default: // a pointer

// we return just the value of the pointer as an integer

return mp_obj_new_int_from_uint(val);

}

}

#endif

#if MICROPY_EMIT_NATIVE

// wrapper that accepts n_args and n_kw in one argument

// (native emitter can only pass at most 3 arguments to a function)

mp_obj_t mp_native_call_function_n_kw(mp_obj_t fun_in, mp_uint_t n_args_kw, const mp_obj_t *args) {

return mp_call_function_n_kw(fun_in, n_args_kw & 0xff, (n_args_kw >> 8) & 0xff, args);

}

// wrapper that makes raise obj and raises it

// END_FINALLY opcode requires that we don't raise if o==None

void mp_native_raise(mp_obj_t o) {

if (o != mp_const_none) {

nlr_raise(mp_make_raise_obj(o));

}

}

// these must correspond to the respective enum in runtime0.h

void *const mp_fun_table[MP_F_NUMBER_OF] = {

mp_convert_obj_to_native,

mp_convert_native_to_obj,

mp_load_name,

mp_load_global,

mp_load_build_class,

mp_load_attr,

mp_load_method,

mp_store_name,

mp_store_global,

mp_store_attr,

mp_obj_subscr,

mp_obj_is_true,

mp_unary_op,

mp_binary_op,

mp_obj_new_tuple,

mp_obj_new_list,

mp_obj_list_append,

mp_obj_new_dict,

mp_obj_dict_store,

#if MICROPY_PY_BUILTINS_SET

mp_obj_new_set,

mp_obj_set_store,

#endif

mp_make_function_from_raw_code,

mp_native_call_function_n_kw,

mp_call_method_n_kw,

mp_call_method_n_kw_var,

mp_getiter,

mp_iternext,

nlr_push,

nlr_pop,

mp_native_raise,

mp_import_name,

mp_import_from,

mp_import_all,

#if MICROPY_PY_BUILTINS_SLICE

mp_obj_new_slice,

#endif

mp_unpack_sequence,

mp_unpack_ex,

mp_delete_name,

mp_delete_global,

mp_obj_new_cell,

mp_make_closure_from_raw_code,

mp_setup_code_state,

};

/*

void mp_f_vector(mp_fun_kind_t fun_kind) {

(mp_f_table[fun_kind])();

}

*/

#endif // MICROPY_EMIT_NATIVE