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Merge pull request #191 from pfalcon/store-item

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Add store_item() virtual method to type to implement container[index] = val
This commit is contained in:
Damien George 2014-01-18 06:57:47 -08:00
commit 0c4e909e76
2 changed files with 13 additions and 1 deletions
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4
py/obj.h
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@ -96,6 +96,7 @@ typedef mp_obj_t (*mp_unary_op_fun_t)(int op, mp_obj_t);
typedef mp_obj_t (*mp_binary_op_fun_t)(int op, mp_obj_t, mp_obj_t);
typedef void (*mp_load_attr_fun_t)(mp_obj_t self_in, qstr attr, mp_obj_t *dest); // for fail, do nothing; for attr, dest[0] = value; for method, dest[0] = method, dest[1] = self
typedef bool (*mp_store_attr_fun_t)(mp_obj_t self_in, qstr attr, mp_obj_t value); // return true if store succeeded
typedef bool (*mp_store_item_fun_t)(mp_obj_t self_in, mp_obj_t index, mp_obj_t value); // return true if store succeeded
typedef struct _mp_method_t {
const char *name;
@ -160,6 +161,9 @@ struct _mp_obj_type_t {
mp_load_attr_fun_t load_attr;
mp_store_attr_fun_t store_attr;
// Implements container[index] = val; note that load_item is implemented
// by binary_op(RT_BINARY_OP_SUBSCR)
mp_store_item_fun_t store_item;
// these are for dynamically created types (classes)
mp_obj_t bases_tuple;

10
py/runtime.c
View File

@ -879,7 +879,15 @@ void rt_store_subscr(mp_obj_t base, mp_obj_t index, mp_obj_t value) {
// dict store
mp_obj_dict_store(base, index, value);
} else {
assert(0);
mp_obj_type_t *type = mp_obj_get_type(base);
if (type->store_item != NULL) {
bool r = type->store_item(base, index, value);
if (r) {
return;
}
// TODO: call base classes here?
}
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_TypeError, "'%s' object does not support item assignment", mp_obj_get_type_str(base)));
}
}