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#ifndef ID_MAP_HPP
#define ID_MAP_HPP
#include <cassert>
#include <ostream>
template<typename T, typename V>
struct IdMap {
IdMap(unsigned int length, V initial)
: _length(length), _assignment(new V[length]) {
for (unsigned int i = 0; i < _length; ++i) {
_assignment[i] = initial;
}
}
IdMap(const IdMap& other)
: _length(other._length), _assignment(new V[other._length]) {
for (unsigned int i = 0; i < _length; ++i) {
_assignment[i] = other._assignment[i];
}
}
virtual ~IdMap() {
delete[] _assignment;
}
virtual IdMap& operator=(const IdMap& other) {
if (_length != other._length) {
delete[] _assignment;
_length = other._length;
_assignment = new V[_length];
}
for (unsigned int i = 0; i < _length; ++i) {
_assignment[i] = other._assignment[i];
}
return *this;
}
virtual const V& operator[] (const T& x) const {
assert(x.id() < _length);
return _assignment[x.id()];
}
virtual V& operator[] (const T& x) {
assert(x.id() < _length);
return _assignment[x.id()];
}
virtual bool operator==(const IdMap& other) const {
if (_length != other._length)
return false;
for (unsigned int i = 0; i < _length; ++i) {
if (_assignment[i] != other._assignment[i]) {
return false;
}
}
return true;
}
virtual bool operator!=(const IdMap& other) const {
return !(*this == other);
}
template<typename Q,typename Z>
friend std::ostream& operator<<(std::ostream& cout, const IdMap<Q, Z>& rho);
protected:
unsigned int _length;
V* _assignment;
};
template<typename T, typename V>
std::ostream& operator<<(std::ostream& cout, const IdMap<T,V>& rho) {
cout << "{";
for (unsigned int i = 0; i < rho._length; ++i) {
if (i != 0) cout << ", ";
cout << i << ": " << rho._assignment[i];
}
cout << "}";
return cout;
}
#endif
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