kopia lustrzana https://github.com/micropython/micropython
180 wiersze
6.1 KiB
C
180 wiersze
6.1 KiB
C
/*
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* This file is part of the MicroPython 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/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 MP_DEFINE_CONST_OBJ_TYPE(
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mp_type_code,
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MP_QSTR_code,
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MP_TYPE_FLAG_NONE
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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
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nlr_jump_callback_node_globals_locals_t ctx;
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ctx.globals = mp_globals_get();
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ctx.locals = mp_locals_get();
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// set new context
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mp_globals_set(globals);
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mp_locals_set(locals);
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// set exception handler to restore context if an exception is raised
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nlr_push_jump_callback(&ctx.callback, mp_globals_locals_set_from_nlr_jump_callback);
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// The call to mp_parse_compile_execute() in mp_builtin_compile() below passes
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// NULL for the globals, so repopulate that entry now with the correct globals.
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if (mp_obj_is_type(self->module_fun, &mp_type_fun_bc)
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#if MICROPY_EMIT_NATIVE
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|| mp_obj_is_type(self->module_fun, &mp_type_fun_native)
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#endif
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) {
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mp_obj_fun_bc_t *fun_bc = MP_OBJ_TO_PTR(self->module_fun);
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((mp_module_context_t *)fun_bc->context)->module.globals = globals;
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}
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// execute code
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mp_obj_t ret = mp_call_function_0(self->module_fun);
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// deregister exception handler and restore context
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nlr_pop_jump_callback(true);
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// return value
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return ret;
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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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size_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:
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parse_input_kind = MP_PARSE_SINGLE_INPUT;
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break;
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case MP_QSTR_exec:
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parse_input_kind = MP_PARSE_FILE_INPUT;
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break;
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case MP_QSTR_eval:
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parse_input_kind = MP_PARSE_EVAL_INPUT;
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break;
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default:
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mp_raise_ValueError(MP_ERROR_TEXT("bad compile mode"));
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}
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mp_obj_code_t *code = mp_obj_malloc(mp_obj_code_t, &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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for (size_t i = 1; i < 3 && i < n_args; ++i) {
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if (args[i] != mp_const_none) {
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if (!mp_obj_is_type(args[i], &mp_type_dict)) {
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mp_raise_TypeError(NULL);
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}
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locals = MP_OBJ_TO_PTR(args[i]);
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if (i == 1) {
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globals = locals;
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}
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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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// 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(mp_obj_str_get_qstr(args[0]));
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parse_input_kind = MP_PARSE_FILE_INPUT;
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} else {
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// Extract the source code.
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mp_buffer_info_t bufinfo;
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mp_get_buffer_raise(args[0], &bufinfo, MP_BUFFER_READ);
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lex = mp_lexer_new_from_str_len(MP_QSTR__lt_string_gt_, bufinfo.buf, bufinfo.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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