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#ifndef MAX_STRATEGY_HPP
#define MAX_STRATEGY_HPP
#include "Expression.hpp"
#include "VariableAssignment.hpp"
template<typename T>
struct MaxStrategy {
MaxStrategy(unsigned int length)
: _length(length), _assignment(new unsigned int[length]) { }
virtual ~MaxStrategy() {
delete[] _assignment;
}
const unsigned int& operator[] (const MaxExpression<T> x) const {
if (x.id() < 0 || x.id() >= _length) {
throw "Array out of bounds";
}
return _assignment[x.id()];
}
unsigned int& operator[] (const MaxExpression<T>& x) {
if (x.id() < 0 || x.id() >= _length) {
throw "Array out of bounds";
}
return _assignment[x.id()];
}
T operator() (const Expression<T>& expr, const VariableAssignment<T>& rho) const {
const MaxExpression<T>* max = dynamic_cast<const MaxExpression<T>*>(&expr);
if (max == NULL) {
return expr(rho);
} else {
return (*expr.arguments()[_assignment[max->id()]])(rho);
}
}
private:
unsigned int _length;
unsigned int* _assignment;
};
#endif
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