kopia lustrzana https://github.com/micropython/micropython
107 wiersze
3.6 KiB
C
107 wiersze
3.6 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 "mpconfig.h"
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#include "nlr.h"
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#include "misc.h"
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#include "qstr.h"
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#include "lexer.h"
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#include "lexerunix.h"
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#include "parse.h"
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#include "obj.h"
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#include "parsehelper.h"
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#include "compile.h"
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#include "runtime0.h"
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#include "runtime.h"
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#include "builtin.h"
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STATIC mp_obj_t parse_compile_execute(mp_obj_t o_in, mp_parse_input_kind_t parse_input_kind) {
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uint str_len;
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const char *str = mp_obj_str_get_data(o_in, &str_len);
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// create the lexer
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mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_string_gt_, str, str_len, 0);
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qstr source_name = mp_lexer_source_name(lex);
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// parse the string
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mp_parse_error_kind_t parse_error_kind;
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mp_parse_node_t pn = mp_parse(lex, parse_input_kind, &parse_error_kind);
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if (pn == MP_PARSE_NODE_NULL) {
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// parse error; raise exception
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mp_obj_t exc = mp_parse_make_exception(lex, parse_error_kind);
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mp_lexer_free(lex);
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nlr_raise(exc);
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}
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mp_lexer_free(lex);
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// compile the string
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mp_obj_t module_fun = mp_compile(pn, source_name, MP_EMIT_OPT_NONE, false);
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mp_parse_node_free(pn);
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if (module_fun == mp_const_none) {
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// TODO handle compile error correctly
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return mp_const_none;
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}
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// complied successfully, execute it
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return mp_call_function_0(module_fun);
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}
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STATIC mp_obj_t mp_builtin_eval(mp_obj_t o_in) {
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return parse_compile_execute(o_in, MP_PARSE_EVAL_INPUT);
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}
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MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_eval_obj, mp_builtin_eval);
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STATIC mp_obj_t mp_builtin_exec(uint n_args, const mp_obj_t *args) {
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// Unconditional getting/setting assumes that these operations
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// are cheap, which is the case when this comment was written.
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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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if (n_args > 1) {
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mp_obj_t globals = args[1];
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mp_obj_t locals;
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if (n_args > 2) {
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locals = args[2];
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} else {
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locals = globals;
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}
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mp_globals_set(globals);
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mp_locals_set(locals);
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}
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mp_obj_t res = parse_compile_execute(args[0], MP_PARSE_FILE_INPUT);
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// TODO if the above call throws an exception, then we never get to reset the globals/locals
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mp_globals_set(old_globals);
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mp_locals_set(old_locals);
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return res;
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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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