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py: Implement core of OrderedDict type.

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Given that there's already support for "fixed table" maps, which are
essentially ordered maps, the implementation of OrderedDict just extends
"fixed table" maps by adding an "is ordered" flag and add/remove
operations, and reuses 95% of objdict code, just making methods tolerant
to both dict and OrderedDict.

Some things are missing so far, like CPython-compatible repr and comparison.

OrderedDict is Disabled by default; enabled on unix and stmhal ports.
This commit is contained in:
Paul Sokolovsky
2015-03-18 01:25:04 +02:00
committed by Damien George
parent 1004535237
commit 0ef01d0a75
9 changed files with 112 additions and 31 deletions
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2
py/objmodule.c
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@@ -62,7 +62,7 @@ STATIC void module_load_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
STATIC bool module_store_attr(mp_obj_t self_in, qstr attr, mp_obj_t value) {
mp_obj_module_t *self = self_in;
mp_obj_dict_t *dict = self->globals;
if (dict->map.table_is_fixed_array) {
if (dict->map.is_fixed) {
#if MICROPY_CAN_OVERRIDE_BUILTINS
if (dict == &mp_module_builtins_globals) {
if (MP_STATE_VM(mp_module_builtins_override_dict) == NULL) {