public Func shift(int shift) {
switch (m_type) {
case VAR:
return new Func(m_index + shift);
case CONST:
return this;
case UNOP:
return new Func(m_uop, m_right.shift(shift));
case BINOP:
return new Func(m_left.shift(shift), m_bop, m_right.shift(shift));
default:
return null;
}
}
public SpecialFunc shift(int shift) {
return new SpecialFunc(m_utype, m_func.shift(shift));
}