166 lines
5.6 KiB
C
166 lines
5.6 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdint.h>
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#include "py/nlr.h"
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#include "py/objfun.h"
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#include "py/compile.h"
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#include "py/runtime.h"
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#include "py/builtin.h"
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#if MICROPY_PY_BUILTINS_COMPILE
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typedef struct _mp_obj_code_t {
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mp_obj_base_t base;
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mp_obj_t module_fun;
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} mp_obj_code_t;
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STATIC const mp_obj_type_t mp_type_code = {
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{ &mp_type_type },
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.name = MP_QSTR_code,
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};
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STATIC mp_obj_t code_execute(mp_obj_code_t *self, mp_obj_dict_t *globals, mp_obj_dict_t *locals) {
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// save context and set new context
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mp_obj_dict_t *old_globals = mp_globals_get();
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mp_obj_dict_t *old_locals = mp_locals_get();
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mp_globals_set(globals);
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mp_locals_set(locals);
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// a bit of a hack: fun_bc will re-set globals, so need to make sure it's
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// the correct one
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if (MP_OBJ_IS_TYPE(self->module_fun, &mp_type_fun_bc)) {
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mp_obj_fun_bc_t *fun_bc = MP_OBJ_TO_PTR(self->module_fun);
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fun_bc->globals = globals;
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}
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// execute code
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nlr_buf_t nlr;
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if (nlr_push(&nlr) == 0) {
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mp_obj_t ret = mp_call_function_0(self->module_fun);
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nlr_pop();
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mp_globals_set(old_globals);
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mp_locals_set(old_locals);
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return ret;
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} else {
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// exception; restore context and re-raise same exception
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mp_globals_set(old_globals);
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mp_locals_set(old_locals);
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nlr_jump(nlr.ret_val);
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}
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}
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STATIC mp_obj_t mp_builtin_compile(size_t n_args, const mp_obj_t *args) {
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(void)n_args;
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// get the source
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mp_uint_t str_len;
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const char *str = mp_obj_str_get_data(args[0], &str_len);
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// get the filename
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qstr filename = mp_obj_str_get_qstr(args[1]);
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// create the lexer
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mp_lexer_t *lex = mp_lexer_new_from_str_len(filename, str, str_len, 0);
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// get the compile mode
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qstr mode = mp_obj_str_get_qstr(args[2]);
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mp_parse_input_kind_t parse_input_kind;
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switch (mode) {
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case MP_QSTR_single: parse_input_kind = MP_PARSE_SINGLE_INPUT; break;
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case MP_QSTR_exec: parse_input_kind = MP_PARSE_FILE_INPUT; break;
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case MP_QSTR_eval: parse_input_kind = MP_PARSE_EVAL_INPUT; break;
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default:
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mp_raise_ValueError("bad compile mode");
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}
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mp_obj_code_t *code = m_new_obj(mp_obj_code_t);
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code->base.type = &mp_type_code;
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code->module_fun = mp_parse_compile_execute(lex, parse_input_kind, NULL, NULL);
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return MP_OBJ_FROM_PTR(code);
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}
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MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_compile_obj, 3, 6, mp_builtin_compile);
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#endif // MICROPY_PY_BUILTINS_COMPILE
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#if MICROPY_PY_BUILTINS_EVAL_EXEC
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STATIC mp_obj_t eval_exec_helper(size_t n_args, const mp_obj_t *args, mp_parse_input_kind_t parse_input_kind) {
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// work out the context
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mp_obj_dict_t *globals = mp_globals_get();
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mp_obj_dict_t *locals = mp_locals_get();
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if (n_args > 1) {
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globals = MP_OBJ_TO_PTR(args[1]);
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if (n_args > 2) {
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locals = MP_OBJ_TO_PTR(args[2]);
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} else {
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locals = globals;
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}
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}
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#if MICROPY_PY_BUILTINS_COMPILE
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if (MP_OBJ_IS_TYPE(args[0], &mp_type_code)) {
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return code_execute(MP_OBJ_TO_PTR(args[0]), globals, locals);
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}
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#endif
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mp_uint_t str_len;
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const char *str = mp_obj_str_get_data(args[0], &str_len);
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// create the lexer
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// MP_PARSE_SINGLE_INPUT is used to indicate a file input
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mp_lexer_t *lex;
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if (MICROPY_PY_BUILTINS_EXECFILE && parse_input_kind == MP_PARSE_SINGLE_INPUT) {
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lex = mp_lexer_new_from_file(str);
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parse_input_kind = MP_PARSE_FILE_INPUT;
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} else {
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lex = mp_lexer_new_from_str_len(MP_QSTR__lt_string_gt_, str, str_len, 0);
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}
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return mp_parse_compile_execute(lex, parse_input_kind, globals, locals);
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}
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STATIC mp_obj_t mp_builtin_eval(size_t n_args, const mp_obj_t *args) {
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return eval_exec_helper(n_args, args, MP_PARSE_EVAL_INPUT);
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}
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MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_eval_obj, 1, 3, mp_builtin_eval);
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STATIC mp_obj_t mp_builtin_exec(size_t n_args, const mp_obj_t *args) {
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return eval_exec_helper(n_args, args, MP_PARSE_FILE_INPUT);
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}
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MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_exec_obj, 1, 3, mp_builtin_exec);
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#endif // MICROPY_PY_BUILTINS_EVAL_EXEC
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#if MICROPY_PY_BUILTINS_EXECFILE
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STATIC mp_obj_t mp_builtin_execfile(size_t n_args, const mp_obj_t *args) {
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// MP_PARSE_SINGLE_INPUT is used to indicate a file input
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return eval_exec_helper(n_args, args, MP_PARSE_SINGLE_INPUT);
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}
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MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_execfile_obj, 1, 3, mp_builtin_execfile);
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#endif
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