py: Convert hash API to use MP_UNARY_OP_HASH instead of ad-hoc function.

Hashing is now done using mp_unary_op function with MP_UNARY_OP_HASH as
the operator argument.  Hashing for int, str and bytes still go via
fast-path in mp_unary_op since they are the most common objects which
need to be hashed.

This lead to quite a bit of code cleanup, and should be more efficient
if anything.  It saves 176 bytes code space on Thumb2, and 360 bytes on
x86.

The only loss is that the error message "unhashable type" is now the
more generic "unsupported type for __hash__".

1 files changed, 1 insertions, 1 deletions

diff --git a/py/obj.h b/py/obj.h
index c67c04a1e..b9e912a33 100644
--- a/py/obj.h
+++ b/py/obj.h
@@ -508,7 +508,6 @@ void mp_obj_print_exception(const mp_print_t *print, mp_obj_t exc);
 
 bool mp_obj_is_true(mp_obj_t arg);
 bool mp_obj_is_callable(mp_obj_t o_in);
-mp_int_t mp_obj_hash(mp_obj_t o_in);
 bool mp_obj_equal(mp_obj_t o1, mp_obj_t o2);
 
 mp_int_t mp_obj_get_int(mp_const_obj_t arg);
@@ -525,6 +524,7 @@ mp_obj_t mp_obj_id(mp_obj_t o_in);
 mp_obj_t mp_obj_len(mp_obj_t o_in);
 mp_obj_t mp_obj_len_maybe(mp_obj_t o_in); // may return MP_OBJ_NULL
 mp_obj_t mp_obj_subscr(mp_obj_t base, mp_obj_t index, mp_obj_t val);
+mp_obj_t mp_generic_unary_op(mp_uint_t op, mp_obj_t o_in);
 
 // bool
 // TODO make lower case when it has proven itself