96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
|
|
#include "nlr.h"
|
|
#include "misc.h"
|
|
#include "mpconfig.h"
|
|
#include "qstr.h"
|
|
#include "lexer.h"
|
|
#include "lexerunix.h"
|
|
#include "parse.h"
|
|
#include "obj.h"
|
|
#include "compile.h"
|
|
#include "runtime0.h"
|
|
#include "runtime.h"
|
|
#include "map.h"
|
|
#include "builtin.h"
|
|
|
|
mp_obj_t mp_builtin___import__(int n_args, mp_obj_t *args) {
|
|
/*
|
|
printf("import:\n");
|
|
for (int i = 0; i < n; i++) {
|
|
printf(" ");
|
|
mp_obj_print(args[i]);
|
|
printf("\n");
|
|
}
|
|
*/
|
|
|
|
qstr mod_name = mp_obj_get_qstr(args[0]);
|
|
mp_obj_t loaded = mp_obj_module_get(mod_name);
|
|
if (loaded != MP_OBJ_NULL) {
|
|
return loaded;
|
|
}
|
|
|
|
// find the file to import
|
|
mp_lexer_t *lex = mp_import_open_file(mod_name);
|
|
if (lex == NULL) {
|
|
// TODO handle lexer error correctly
|
|
return mp_const_none;
|
|
}
|
|
|
|
// create a new module object
|
|
mp_obj_t module_obj = mp_obj_new_module(mp_obj_get_qstr(args[0]));
|
|
|
|
// save the old context
|
|
mp_map_t *old_locals = rt_locals_get();
|
|
mp_map_t *old_globals = rt_globals_get();
|
|
|
|
// set the new context
|
|
rt_locals_set(mp_obj_module_get_globals(module_obj));
|
|
rt_globals_set(mp_obj_module_get_globals(module_obj));
|
|
|
|
// parse the imported script
|
|
qstr parse_exc_id;
|
|
const char *parse_exc_msg;
|
|
mp_parse_node_t pn = mp_parse(lex, MP_PARSE_FILE_INPUT, &parse_exc_id, &parse_exc_msg);
|
|
qstr source_name = mp_lexer_source_name(lex);
|
|
mp_lexer_free(lex);
|
|
|
|
if (pn == MP_PARSE_NODE_NULL) {
|
|
// parse error; clean up and raise exception
|
|
rt_locals_set(old_locals);
|
|
rt_globals_set(old_globals);
|
|
nlr_jump(mp_obj_new_exception_msg(parse_exc_id, parse_exc_msg));
|
|
}
|
|
|
|
// compile the imported script
|
|
mp_obj_t module_fun = mp_compile(pn, source_name, false);
|
|
|
|
if (module_fun == mp_const_none) {
|
|
// TODO handle compile error correctly
|
|
rt_locals_set(old_locals);
|
|
rt_globals_set(old_globals);
|
|
return mp_const_none;
|
|
}
|
|
|
|
// complied successfully, execute it
|
|
nlr_buf_t nlr;
|
|
if (nlr_push(&nlr) == 0) {
|
|
rt_call_function_0(module_fun);
|
|
nlr_pop();
|
|
} else {
|
|
// exception; restore context and re-raise same exception
|
|
rt_locals_set(old_locals);
|
|
rt_globals_set(old_globals);
|
|
nlr_jump(nlr.ret_val);
|
|
}
|
|
rt_locals_set(old_locals);
|
|
rt_globals_set(old_globals);
|
|
|
|
return module_obj;
|
|
}
|