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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2025 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/objcode.h"
#if MICROPY_PY_BUILTINS_CODE == MICROPY_PY_BUILTINS_CODE_NONE
// Code object not implemented at this configuration level.
#elif MICROPY_PY_BUILTINS_CODE <= MICROPY_PY_BUILTINS_CODE_BASIC
MP_DEFINE_CONST_OBJ_TYPE(
mp_type_code,
MP_QSTR_code,
MP_TYPE_FLAG_NONE
);
#elif MICROPY_PY_BUILTINS_CODE <= MICROPY_PY_BUILTINS_CODE_FULL
#include "py/profile.h"
static void code_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t kind) {
(void)kind;
mp_obj_code_t *o = MP_OBJ_TO_PTR(o_in);
const mp_raw_code_t *rc = o->rc;
const mp_bytecode_prelude_t *prelude = &rc->prelude;
mp_printf(print,
"<code object %q at 0x%p, file \"%q\", line %d>",
MP_CODE_QSTR_MAP(o->context, prelude->qstr_block_name_idx),
o,
MP_CODE_QSTR_MAP(o->context, 0),
rc->line_of_definition
);
}
static mp_obj_tuple_t *code_consts(const mp_module_context_t *context, const mp_raw_code_t *rc) {
mp_obj_tuple_t *consts = MP_OBJ_TO_PTR(mp_obj_new_tuple(rc->n_children + 1, NULL));
size_t const_no = 0;
for (size_t i = 0; i < rc->n_children; ++i) {
mp_obj_t code = mp_obj_new_code(context, rc->children[i], true);
consts->items[const_no++] = code;
}
consts->items[const_no++] = mp_const_none;
return consts;
}
static mp_obj_t raw_code_lnotab(const mp_raw_code_t *rc) {
// const mp_bytecode_prelude_t *prelude = &rc->prelude;
uint start = 0;
uint stop = rc->fun_data_len - start;
uint last_lineno = mp_prof_bytecode_lineno(rc, start);
uint lasti = 0;
const uint buffer_chunk_size = (stop - start) >> 2; // heuristic magic
uint buffer_size = buffer_chunk_size;
byte *buffer = m_new(byte, buffer_size);
uint buffer_index = 0;
for (uint i = start; i < stop; ++i) {
uint lineno = mp_prof_bytecode_lineno(rc, i);
size_t line_diff = lineno - last_lineno;
if (line_diff > 0) {
uint instr_diff = (i - start) - lasti;
assert(instr_diff < 256);
assert(line_diff < 256);
if (buffer_index + 2 > buffer_size) {
buffer = m_renew(byte, buffer, buffer_size, buffer_size + buffer_chunk_size);
buffer_size = buffer_size + buffer_chunk_size;
}
last_lineno = lineno;
lasti = i - start;
buffer[buffer_index++] = instr_diff;
buffer[buffer_index++] = line_diff;
}
}
mp_obj_t o = mp_obj_new_bytes(buffer, buffer_index);
m_del(byte, buffer, buffer_size);
return o;
}
static void code_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
if (dest[0] != MP_OBJ_NULL) {
// not load attribute
return;
}
mp_obj_code_t *o = MP_OBJ_TO_PTR(self_in);
const mp_raw_code_t *rc = o->rc;
const mp_bytecode_prelude_t *prelude = &rc->prelude;
switch (attr) {
case MP_QSTR_co_code:
dest[0] = mp_obj_new_bytes(
(void *)prelude->opcodes,
rc->fun_data_len - (prelude->opcodes - (const byte *)rc->fun_data)
);
break;
case MP_QSTR_co_consts:
dest[0] = MP_OBJ_FROM_PTR(code_consts(o->context, rc));
break;
case MP_QSTR_co_filename:
dest[0] = MP_OBJ_NEW_QSTR(MP_CODE_QSTR_MAP(o->context, 0));
break;
case MP_QSTR_co_firstlineno:
dest[0] = MP_OBJ_NEW_SMALL_INT(mp_prof_bytecode_lineno(rc, 0));
break;
case MP_QSTR_co_name:
dest[0] = MP_OBJ_NEW_QSTR(MP_CODE_QSTR_MAP(o->context, prelude->qstr_block_name_idx));
break;
case MP_QSTR_co_names:
dest[0] = MP_OBJ_FROM_PTR(o->dict_locals);
break;
case MP_QSTR_co_lnotab:
if (!o->lnotab) {
o->lnotab = raw_code_lnotab(rc);
}
dest[0] = o->lnotab;
break;
}
}
MP_DEFINE_CONST_OBJ_TYPE(
mp_type_code,
MP_QSTR_code,
MP_TYPE_FLAG_NONE,
print, code_print,
attr, code_attr
);
mp_obj_t mp_obj_new_code(const mp_module_context_t *context, const mp_raw_code_t *rc, bool result_required) {
mp_obj_code_t *o;
if (result_required) {
o = m_new_obj(mp_obj_code_t);
} else {
o = m_new_obj_maybe(mp_obj_code_t);
if (o == NULL) {
return MP_OBJ_NULL;
}
}
o->base.type = &mp_type_code;
o->context = context;
o->rc = rc;
o->dict_locals = mp_locals_get(); // this is a wrong! how to do this properly?
o->lnotab = MP_OBJ_NULL;
return MP_OBJ_FROM_PTR(o);
}
#endif
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