explicit function_expression(
const std::string& name,
const args_list& args,
int min_args=-1, int max_args=-1)
: name_(name), args_(args)
{
set_name(name.c_str());
if(min_args >= 0 && args_.size() < static_cast<size_t>(min_args)) {
throw formula_error("Too few arguments", "", "", 0);
}
if(max_args >= 0 && args_.size() > static_cast<size_t>(max_args)) {
throw formula_error("Too many arguments", "", "", 0);
}
}
bool Operator::operator()(bool o) const
{
try {
if (NOT != data)
throw formula_error("Invalid formula!");
} catch (formula_error err) {
err.process();
}
return !o;
}
bool Operator::operator()(bool o1, bool o2) const
{
try {
if (XNOR == data)
return o1 ^ o2;
else if (IMPLICATION == data) {
if (!o1)
return true;
else if (o2)
return true;
else
return false;
} else if (OR == data)
return o1 || o2;
else if (AND == data)
return o1 && o2;
else
throw formula_error("Invalid formula!");
} catch (formula_error err) {
err.process();
}
}
