diff options
Diffstat (limited to 'py/runtime.c')
| -rw-r--r-- | py/runtime.c | 42 |
1 files changed, 19 insertions, 23 deletions
diff --git a/py/runtime.c b/py/runtime.c index 08a35c2e6..c7fe39367 100644 --- a/py/runtime.c +++ b/py/runtime.c @@ -523,30 +523,12 @@ mp_obj_t mp_binary_op(mp_binary_op_t op, mp_obj_t lhs, mp_obj_t rhs) { } } - /* deal with `in` - * - * NOTE `a in b` is `b.__contains__(a)`, hence why the generic dispatch - * needs to go below with swapped arguments - */ + // Convert MP_BINARY_OP_IN to MP_BINARY_OP_CONTAINS with swapped args. if (op == MP_BINARY_OP_IN) { - mp_obj_type_t *type = mp_obj_get_type(rhs); - if (type->binary_op != NULL) { - mp_obj_t res = type->binary_op(op, rhs, lhs); - if (res != MP_OBJ_NULL) { - return res; - } - } - - // final attempt, walk the iterator (will raise if rhs is not iterable) - mp_obj_iter_buf_t iter_buf; - mp_obj_t iter = mp_getiter(rhs, &iter_buf); - mp_obj_t next; - while ((next = mp_iternext(iter)) != MP_OBJ_STOP_ITERATION) { - if (mp_obj_equal(next, lhs)) { - return mp_const_true; - } - } - return mp_const_false; + op = MP_BINARY_OP_CONTAINS; + mp_obj_t temp = lhs; + lhs = rhs; + rhs = temp; } // generic binary_op supplied by type @@ -575,6 +557,20 @@ generic_binary_op: } #endif + if (op == MP_BINARY_OP_CONTAINS) { + // If type didn't support containment then explicitly walk the iterator. + // mp_getiter will raise the appropriate exception if lhs is not iterable. + mp_obj_iter_buf_t iter_buf; + mp_obj_t iter = mp_getiter(lhs, &iter_buf); + mp_obj_t next; + while ((next = mp_iternext(iter)) != MP_OBJ_STOP_ITERATION) { + if (mp_obj_equal(next, rhs)) { + return mp_const_true; + } + } + return mp_const_false; + } + unsupported_op: if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) { mp_raise_TypeError("unsupported type for operator"); |