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// array.h
namespace mongo {
template<typename T>
class FastArray {
public:
FastArray( int capacity=10000 )
: _capacity( capacity ) , _size(0) , _end(this,capacity){
_data = new T[capacity];
}
~FastArray(){
delete[] _data;
}
void clear(){
_size = 0;
}
T& operator[]( int x ){
assert( x >= 0 && x < _capacity );
return _data[x];
}
T& getNext(){
return _data[_size++];
}
void push_back( const T& t ){
_data[_size++] = t;
}
void sort( int (*comp)(const void *, const void *) ){
qsort( _data , _size , sizeof(T) , comp );
}
int size(){
return _size;
}
bool hasSpace(){
return _size < _capacity;
}
class iterator {
public:
iterator(){
_it = 0;
_pos = 0;
}
iterator( FastArray * it , int pos=0 ){
_it = it;
_pos = pos;
}
bool operator==(const iterator& other ) const {
return _pos == other._pos;
}
bool operator!=(const iterator& other ) const {
return _pos != other._pos;
}
void operator++(){
_pos++;
}
T& operator*(){
return _it->_data[_pos];
}
operator string() const {
stringstream ss;
ss << _pos;
return ss.str();
}
private:
FastArray * _it;
int _pos;
friend class FastArray;
};
iterator begin(){
return iterator(this);
}
iterator end(){
_end._pos = _size;
return _end;
}
private:
int _capacity;
int _size;
iterator _end;
T * _data;
};
}
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