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#ifndef EXPRESSION_HPP
#define EXPRESSION_HPP
#include "VariableAssignment.hpp"
#include "Operator.hpp"
template<typename T>
struct Expression {
Expression(Operator<T>* op, const std::vector< Expression<T>* >& args)
: _operator(op), _arguments(args) { }
virtual ~Expression() {
/*delete _operator;
for (typename std::vector< Expression<T>* >::iterator it = _arguments.begin();
it != _arguments.end();
++it) {
delete *it;
}*/
}
const std::vector<Expression<T>*>& arguments() const {
return _arguments;
}
virtual T operator() (const VariableAssignment<T>& assignment) const {
return (*_operator)(_arguments, assignment);
}
private:
Operator<T>* _operator;
std::vector< Expression<T>* > _arguments;
};
template<typename T>
struct MaxExpression : public Expression<T> {
MaxExpression(const std::vector< Expression<T>* >& args)
: Expression<T>(new Maximum<T>, args) { }
unsigned int id() const {
return _id;
}
unsigned int id(unsigned int id) {
return (_id = id);
}
private:
unsigned int _id;
};
#endif
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