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Add note about implementing inplace operators.

This commit is contained in:
Damien George 2014-01-03 14:09:31 +00:00
parent 66028ab6dc
commit 14f945c2ca
1 changed files with 10 additions and 0 deletions
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py/runtime.c
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@ -471,6 +471,16 @@ mp_obj_t rt_unary_op(int op, mp_obj_t arg) {
mp_obj_t rt_binary_op(int op, mp_obj_t lhs, mp_obj_t rhs) {
DEBUG_OP_printf("binary %d %p %p\n", op, lhs, rhs);
// TODO correctly distinguish inplace operators for mutable objects
// lookup logic that CPython uses for +=:
// check for implemented +=
// then check for implemented +
// then check for implemented seq.inplace_concat
// then check for implemented seq.concat
// then fail
// note that list does not implement + or +=, so that inplace_concat is reached first for +=
if (MP_OBJ_IS_SMALL_INT(lhs) && MP_OBJ_IS_SMALL_INT(rhs)) {
mp_small_int_t lhs_val = MP_OBJ_SMALL_INT_VALUE(lhs);
mp_small_int_t rhs_val = MP_OBJ_SMALL_INT_VALUE(rhs);