Implement __bool__ and __len__ via unary_op virtual method for all types.
__bool__() and __len__() are just the same as __neg__() or __invert__(),
and require efficient dispatching implementation (not requiring search/lookup).
type->unary_op() is just the right choice for this short of adding
standalone virtual method(s) to already big mp_obj_type_t structure.
diff --git a/py/objarray.c b/py/objarray.c
index 42dbfcd..c595d21 100644
--- a/py/objarray.c
+++ b/py/objarray.c
@@ -189,6 +189,15 @@
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_bytearray_obj, mp_builtin_bytearray);
+static mp_obj_t array_unary_op(int op, mp_obj_t o_in) {
+ mp_obj_array_t *o = o_in;
+ switch (op) {
+ case RT_UNARY_OP_BOOL: return MP_BOOL(o->len != 0);
+ case RT_UNARY_OP_LEN: return MP_OBJ_NEW_SMALL_INT(o->len);
+ default: return MP_OBJ_NULL; // op not supported
+ }
+}
+
static mp_obj_t array_binary_op(int op, mp_obj_t lhs, mp_obj_t rhs) {
mp_obj_array_t *o = lhs;
switch (op) {
@@ -245,6 +254,7 @@
.print = array_print,
.make_new = array_make_new,
.getiter = array_iterator_new,
+ .unary_op = array_unary_op,
.binary_op = array_binary_op,
.store_item = array_store_item,
.methods = array_type_methods,