Add module object, to be used eventually for import.

py/objmodule.c

@@ -0,0 +1,48 @@
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <assert.h>
+
+#include "nlr.h"
+#include "misc.h"
+#include "mpconfig.h"
+#include "obj.h"
+#include "runtime.h"
+#include "map.h"
+
+typedef struct _mp_obj_module_t {
+    mp_obj_base_t base;
+    qstr name;
+    mp_map_t *globals;
+} mp_obj_module_t;
+
+void module_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in) {
+    mp_obj_module_t *self = self_in;
+    print(env, "<module '%s' from '-unknown-file-'>", qstr_str(self->name));
+}
+
+const mp_obj_type_t module_type = {
+    { &mp_const_type },
+    "module",
+    module_print, // print
+    NULL, // call_n
+    NULL, // unary_op
+    NULL, // binary_op
+    NULL, // getiter
+    NULL, // iternext
+    {{NULL, NULL},}, // method list
+};
+
+mp_obj_t mp_obj_new_module(qstr module_name) {
+    mp_obj_module_t *o = m_new_obj(mp_obj_module_t);
+    o->base.type = &module_type;
+    o->name = module_name;
+    o->globals = mp_map_new(MP_MAP_QSTR, 0);
+    return o;
+}
+
+mp_map_t *mp_obj_module_get_globals(mp_obj_t self_in) {
+    assert(MP_OBJ_IS_TYPE(self_in, &module_type));
+    mp_obj_module_t *self = self_in;
+    return self->globals;
+}