LCOV - code coverage report
Current view: top level - extmod - modmarshal.c (source / functions) Hit Total Coverage
Test: unix_coverage_v1.24.0-298-gb675c8799.info Lines: 20 20 100.0 %
Date: 2025-02-12 10:59:09 Functions: 2 2 100.0 %
Branches: 15 20 75.0 %

           Branch data     Line data    Source code
       1                 :            : /*
       2                 :            :  * This file is part of the MicroPython project, http://micropython.org/
       3                 :            :  *
       4                 :            :  * The MIT License (MIT)
       5                 :            :  *
       6                 :            :  * Copyright (c) 2025 Damien P. George
       7                 :            :  *
       8                 :            :  * Permission is hereby granted, free of charge, to any person obtaining a copy
       9                 :            :  * of this software and associated documentation files (the "Software"), to deal
      10                 :            :  * in the Software without restriction, including without limitation the rights
      11                 :            :  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
      12                 :            :  * copies of the Software, and to permit persons to whom the Software is
      13                 :            :  * furnished to do so, subject to the following conditions:
      14                 :            :  *
      15                 :            :  * The above copyright notice and this permission notice shall be included in
      16                 :            :  * all copies or substantial portions of the Software.
      17                 :            :  *
      18                 :            :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      19                 :            :  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      20                 :            :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
      21                 :            :  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      22                 :            :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
      23                 :            :  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
      24                 :            :  * THE SOFTWARE.
      25                 :            :  *
      26                 :            :  */
      27                 :            : 
      28                 :            : #include "py/objcode.h"
      29                 :            : #include "py/objfun.h"
      30                 :            : #include "py/persistentcode.h"
      31                 :            : #include "py/runtime.h"
      32                 :            : 
      33                 :            : #if MICROPY_PY_MARSHAL
      34                 :            : 
      35                 :         10 : static mp_obj_t marshal_dumps(mp_obj_t value_in) {
      36   [ -  +  -  +  :         10 :     if (mp_obj_is_type(value_in, &mp_type_code)) {
          -  +  -  +  +  
                -  +  + ]
      37                 :          9 :         mp_obj_code_t *code = MP_OBJ_TO_PTR(value_in);
      38         [ +  + ]:          9 :         const void *proto_fun = mp_code_get_proto_fun(code);
      39                 :          9 :         const uint8_t *bytecode;
      40         [ +  + ]:          9 :         if (mp_proto_fun_is_bytecode(proto_fun)) {
      41                 :            :             bytecode = proto_fun;
      42                 :            :         } else {
      43                 :          3 :             const mp_raw_code_t *rc = proto_fun;
      44   [ +  +  +  + ]:          3 :             if (!(rc->kind == MP_CODE_BYTECODE && rc->children == NULL)) {
      45                 :          2 :                 mp_raise_ValueError(MP_ERROR_TEXT("function must be bytecode with no children"));
      46                 :            :             }
      47                 :          1 :             bytecode = rc->fun_data;
      48                 :            :         }
      49                 :          7 :         return mp_raw_code_save_fun_to_bytes(mp_code_get_constants(code), bytecode);
      50                 :            :     } else {
      51                 :          1 :         mp_raise_ValueError(MP_ERROR_TEXT("unmarshallable object"));
      52                 :            :     }
      53                 :            : }
      54                 :            : static MP_DEFINE_CONST_FUN_OBJ_1(marshal_dumps_obj, marshal_dumps);
      55                 :            : 
      56                 :          7 : static mp_obj_t marshal_loads(mp_obj_t data_in) {
      57                 :          7 :     mp_buffer_info_t bufinfo;
      58                 :          7 :     mp_get_buffer_raise(data_in, &bufinfo, MP_BUFFER_READ);
      59                 :          7 :     mp_module_context_t ctx;
      60                 :          7 :     ctx.module.globals = mp_globals_get();
      61                 :          7 :     mp_compiled_module_t cm = { .context = &ctx };
      62                 :          7 :     mp_raw_code_load_mem(bufinfo.buf, bufinfo.len, &cm);
      63                 :            :     #if MICROPY_PY_BUILTINS_CODE <= MICROPY_PY_BUILTINS_CODE_BASIC
      64                 :          7 :     return mp_obj_new_code(ctx.constants, cm.rc);
      65                 :            :     #else
      66                 :            :     mp_module_context_t *ctx_ptr = m_new_obj(mp_module_context_t);
      67                 :            :     *ctx_ptr = ctx;
      68                 :            :     return mp_obj_new_code(ctx_ptr, cm.rc, true);
      69                 :            :     #endif
      70                 :            : }
      71                 :            : static MP_DEFINE_CONST_FUN_OBJ_1(marshal_loads_obj, marshal_loads);
      72                 :            : 
      73                 :            : static const mp_rom_map_elem_t mod_marshal_globals_table[] = {
      74                 :            :     { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_marshal) },
      75                 :            :     { MP_ROM_QSTR(MP_QSTR_dumps), MP_ROM_PTR(&marshal_dumps_obj) },
      76                 :            :     { MP_ROM_QSTR(MP_QSTR_loads), MP_ROM_PTR(&marshal_loads_obj) },
      77                 :            : };
      78                 :            : 
      79                 :            : static MP_DEFINE_CONST_DICT(mod_marshal_globals, mod_marshal_globals_table);
      80                 :            : 
      81                 :            : const mp_obj_module_t mp_module_marshal = {
      82                 :            :     .base = { &mp_type_module },
      83                 :            :     .globals = (mp_obj_dict_t *)&mod_marshal_globals,
      84                 :            : };
      85                 :            : 
      86                 :            : MP_REGISTER_MODULE(MP_QSTR_marshal, mp_module_marshal);
      87                 :            : 
      88                 :            : #endif // MICROPY_PY_MARSHAL

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