else if (t == STRING_LINE) {
r = stringLine(b, 0);
}
else if (t == STRUCT_OPERATION) {
r = structOperation(b, 0);
<BUG>}
else if (t == TUPLE) {</BUG>
r = tuple(b, 0);
}
else if (t == TWO_INFIX_OPERATOR) {

else if (t == STRING_LINE) {
r = stringLine(b, 0);
}
else if (t == STRUCT_OPERATION) {
r = structOperation(b, 0);
}
else if (t == THREE_INFIX_OPERATOR) {
r = threeInfixOperator(b, 0);
}
else if (t == TUPLE) {
r = tuple(b, 0);
}
else if (t == TWO_INFIX_OPERATOR) {
