switch (action.layer_bitop.op) {
case OP_BIT_AND: default_layer_and(bits | mask); break;
case OP_BIT_OR: default_layer_or(bits | mask); break;
case OP_BIT_XOR: default_layer_xor(bits | mask); break;
switch (action.layer_bitop.op) {
case OP_BIT_AND: default_layer_and(bits | mask); break;
case OP_BIT_OR: default_layer_or(bits | mask); break;
case OP_BIT_XOR: default_layer_xor(bits | mask); break;