1/*
2 * This file is part of the MicroPython project, http://micropython.org/
3 *
4 * The MIT License (MIT)
5 *
6 * Copyright (c) 2013, 2014 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#include <stdint.h>
28
29#include "py/objfun.h"
30#include "py/compile.h"
31#include "py/runtime.h"
32#include "py/builtin.h"
33
34#if MICROPY_PY_BUILTINS_COMPILE
35
36typedef struct _mp_obj_code_t {
37 mp_obj_base_t base;
38 mp_obj_t module_fun;
39} mp_obj_code_t;
40
41STATIC const mp_obj_type_t mp_type_code = {
42 { &mp_type_type },
43 .name = MP_QSTR_code,
44};
45
46STATIC mp_obj_t code_execute(mp_obj_code_t *self, mp_obj_dict_t *globals, mp_obj_dict_t *locals) {
47 // save context and set new context
48 mp_obj_dict_t *old_globals = mp_globals_get();
49 mp_obj_dict_t *old_locals = mp_locals_get();
50 mp_globals_set(globals);
51 mp_locals_set(locals);
52
53 // a bit of a hack: fun_bc will re-set globals, so need to make sure it's
54 // the correct one
55 if (mp_obj_is_type(self->module_fun, &mp_type_fun_bc)) {
56 mp_obj_fun_bc_t *fun_bc = MP_OBJ_TO_PTR(self->module_fun);
57 fun_bc->globals = globals;
58 }
59
60 // execute code
61 nlr_buf_t nlr;
62 if (nlr_push(&nlr) == 0) {
63 mp_obj_t ret = mp_call_function_0(self->module_fun);
64 nlr_pop();
65 mp_globals_set(old_globals);
66 mp_locals_set(old_locals);
67 return ret;
68 } else {
69 // exception; restore context and re-raise same exception
70 mp_globals_set(old_globals);
71 mp_locals_set(old_locals);
72 nlr_jump(nlr.ret_val);
73 }
74}
75
76STATIC mp_obj_t mp_builtin_compile(size_t n_args, const mp_obj_t *args) {
77 (void)n_args;
78
79 // get the source
80 size_t str_len;
81 const char *str = mp_obj_str_get_data(args[0], &str_len);
82
83 // get the filename
84 qstr filename = mp_obj_str_get_qstr(args[1]);
85
86 // create the lexer
87 mp_lexer_t *lex = mp_lexer_new_from_str_len(filename, str, str_len, 0);
88
89 // get the compile mode
90 qstr mode = mp_obj_str_get_qstr(args[2]);
91 mp_parse_input_kind_t parse_input_kind;
92 switch (mode) {
93 case MP_QSTR_single:
94 parse_input_kind = MP_PARSE_SINGLE_INPUT;
95 break;
96 case MP_QSTR_exec:
97 parse_input_kind = MP_PARSE_FILE_INPUT;
98 break;
99 case MP_QSTR_eval:
100 parse_input_kind = MP_PARSE_EVAL_INPUT;
101 break;
102 default:
103 mp_raise_ValueError(MP_ERROR_TEXT("bad compile mode"));
104 }
105
106 mp_obj_code_t *code = m_new_obj(mp_obj_code_t);
107 code->base.type = &mp_type_code;
108 code->module_fun = mp_parse_compile_execute(lex, parse_input_kind, NULL, NULL);
109 return MP_OBJ_FROM_PTR(code);
110}
111MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_compile_obj, 3, 6, mp_builtin_compile);
112
113#endif // MICROPY_PY_BUILTINS_COMPILE
114
115#if MICROPY_PY_BUILTINS_EVAL_EXEC
116
117STATIC mp_obj_t eval_exec_helper(size_t n_args, const mp_obj_t *args, mp_parse_input_kind_t parse_input_kind) {
118 // work out the context
119 mp_obj_dict_t *globals = mp_globals_get();
120 mp_obj_dict_t *locals = mp_locals_get();
121 for (size_t i = 1; i < 3 && i < n_args; ++i) {
122 if (args[i] != mp_const_none) {
123 if (!mp_obj_is_type(args[i], &mp_type_dict)) {
124 mp_raise_TypeError(NULL);
125 }
126 locals = MP_OBJ_TO_PTR(args[i]);
127 if (i == 1) {
128 globals = locals;
129 }
130 }
131 }
132
133 #if MICROPY_PY_BUILTINS_COMPILE
134 if (mp_obj_is_type(args[0], &mp_type_code)) {
135 return code_execute(MP_OBJ_TO_PTR(args[0]), globals, locals);
136 }
137 #endif
138
139 // Extract the source code.
140 mp_buffer_info_t bufinfo;
141 mp_get_buffer_raise(args[0], &bufinfo, MP_BUFFER_READ);
142
143 // create the lexer
144 // MP_PARSE_SINGLE_INPUT is used to indicate a file input
145 mp_lexer_t *lex;
146 if (MICROPY_PY_BUILTINS_EXECFILE && parse_input_kind == MP_PARSE_SINGLE_INPUT) {
147 lex = mp_lexer_new_from_file(bufinfo.buf);
148 parse_input_kind = MP_PARSE_FILE_INPUT;
149 } else {
150 lex = mp_lexer_new_from_str_len(MP_QSTR__lt_string_gt_, bufinfo.buf, bufinfo.len, 0);
151 }
152
153 return mp_parse_compile_execute(lex, parse_input_kind, globals, locals);
154}
155
156STATIC mp_obj_t mp_builtin_eval(size_t n_args, const mp_obj_t *args) {
157 return eval_exec_helper(n_args, args, MP_PARSE_EVAL_INPUT);
158}
159MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_eval_obj, 1, 3, mp_builtin_eval);
160
161STATIC mp_obj_t mp_builtin_exec(size_t n_args, const mp_obj_t *args) {
162 return eval_exec_helper(n_args, args, MP_PARSE_FILE_INPUT);
163}
164MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_exec_obj, 1, 3, mp_builtin_exec);
165
166#endif // MICROPY_PY_BUILTINS_EVAL_EXEC
167
168#if MICROPY_PY_BUILTINS_EXECFILE
169STATIC mp_obj_t mp_builtin_execfile(size_t n_args, const mp_obj_t *args) {
170 // MP_PARSE_SINGLE_INPUT is used to indicate a file input
171 return eval_exec_helper(n_args, args, MP_PARSE_SINGLE_INPUT);
172}
173MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_execfile_obj, 1, 3, mp_builtin_execfile);
174#endif
175