containers.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef ULTIMA_STD_CONTAINERS_H
#define ULTIMA_STD_CONTAINERS_H

#include "common/algorithm.h"
#include "common/array.h"
#include "common/hashmap.h"
#include "common/hash-str.h"
#include "common/list.h"
#include "common/queue.h"
#include "common/stack.h"
#include "common/util.h"

namespace Ultima {
namespace Std {

template<class T>
class vector : public Common::Array<T> {
public:
    struct reverse_iterator {
    private:
        vector<T> *_owner;
        int _index;
    public:
        reverse_iterator(vector<T> *owner, int index) : _owner(owner), _index(index) {}
        reverse_iterator() : _owner(0), _index(-1) {}

        T &operator*() { return (*_owner)[_index]; }

        reverse_iterator &operator++() {
            --_index;
            return *this;
        }

        bool operator==(const reverse_iterator &rhs) {
            return _owner == rhs._owner && _index == rhs._index;
        }
        bool operator!=(const reverse_iterator &rhs) {
            return !operator==(rhs);
        }
    };

    struct const_reverse_iterator {
    private:
        const vector<T> *_owner;
        int _index;
    public:
        const_reverse_iterator(const vector<T> *owner, int index) : _owner(owner), _index(index) {
        }
        const_reverse_iterator() : _owner(0), _index(-1) {
        }

        const T operator*() const {
            return (*_owner)[_index];
        }

        const_reverse_iterator &operator++() {
            --_index;
            return *this;
        }

        bool operator==(const const_reverse_iterator &rhs) {
            return _owner == rhs._owner && _index == rhs._index;
        }
        bool operator!=(const const_reverse_iterator &rhs) {
            return !operator==(rhs);
        }
    };
public:
    constexpr vector() : Common::Array<T>() {}
    vector(size_t newSize) : Common::Array<T>(newSize) {}
    vector(size_t newSize, const T elem) : Common::Array<T>(newSize, elem) {}

    reverse_iterator rbegin() {
        return reverse_iterator(this, (int)Common::Array<T>::size() - 1);
    }
    reverse_iterator rend() {
        return reverse_iterator(this, -1);
    }
    const_reverse_iterator rbegin() const {
        return const_reverse_iterator(this, (int)Common::Array<T>::size() - 1);
    }
    const_reverse_iterator rend() const {
        return const_reverse_iterator(this, -1);
    }
};

template<class T>
class set {
    struct Comparitor {
        bool operator()(const T &a, const T &b) const {
            return a == b;
        }
    };
private:
    Common::Array<T> _items;
    Comparitor _comparitor;
public:
    typedef T *iterator;
    typedef const T *const_iterator;

    iterator begin() { return _items.begin(); }
    iterator end() { return _items.end(); }
    const_iterator begin() const { return _items.begin(); }
    const_iterator end() const { return _items.end(); }

    void clear() {
        _items.clear();
    }

    void insert(T val) {
        _items.push_back(val);
        Common::sort(begin(), end(), _comparitor);
    }

    void insert(iterator first, iterator last) {
        for (; first != last; ++first)
            _items.push_back(*first);
        Common::sort(begin(), end(), _comparitor);
    }

    void swap(set<T> &arr) {
        _items.swap(arr);
    }

    iterator find(const T item) {
        iterator it = begin();
        for (; it != end() && *it != item; ++it) {}
        return it;
    }
    const_iterator find(const T item) const {
        const_iterator it = begin();
        for (; it != end() && *it != item; ++it) {
        }
        return it;
    }
};

template<class T>
class list : public Common::List<T> {
public:
    struct reverse_iterator {
    private:
        typename Common::List<T>::iterator _it;
    public:
        reverse_iterator(typename Common::List<T>::iterator it) : _it(it) {}
        reverse_iterator() {}

        T operator*() const { return *_it; }

        reverse_iterator &operator++() {
            --_it;
            return *this;
        }

        bool operator==(const reverse_iterator &rhs) { return _it == rhs._it; }
        bool operator!=(const reverse_iterator &rhs) { return _it != rhs._it; }
    };
public:
    reverse_iterator rbegin() {
        return reverse_iterator(Common::List<T>::reverse_begin());
    }
    reverse_iterator rend() {
        return reverse_iterator(Common::List<T>::end());
    }
};

template <class _Ty, class _Container, class _Pr>
class priority_queue {
public:
    priority_queue() : c(), comp() {}

    explicit priority_queue(const _Pr &_Pred) : c(), comp(_Pred) {}

    priority_queue(const _Pr &_Pred, const _Container &_Cont) : c(_Cont), comp(_Pred) {
        make_heap(c.begin(), c.end(), comp);
    }

    template <class _InIt>
    priority_queue(_InIt _First, _InIt _Last, const _Pr &_Pred, const _Container &_Cont) : c(_Cont), comp(_Pred) {
        c.insert(c.end(), _First, _Last);
        make_heap(c.begin(), c.end(), comp);
    }

    template <class _InIt>
    priority_queue(_InIt _First, _InIt _Last) : c(_First, _Last), comp() {
        make_heap(c.begin(), c.end(), comp);
    }

    template <class _InIt>
    priority_queue(_InIt _First, _InIt _Last, const _Pr &_Pred) : c(_First, _Last), comp(_Pred) {
        make_heap(c.begin(), c.end(), comp);
    }

    bool empty() const {
        return c.empty();
    }

    size_t size() const {
        return c.size();
    }

    typename _Container::const_reference top() const {
        return c.back();
    }

    void push(const typename _Container::value_type &_Val) {
        c.push_back(_Val);
        Common::sort(c.begin(), c.end(), comp);
    }

    void pop() {
        c.pop_back();
    }

    void swap(priority_queue &_Right) {
        SWAP(c, _Right.c);
        SWAP(comp, _Right.comp);
    }

protected:
    _Container c;
    _Pr comp;
};

} // End of namespace Std
} // End of namespace Ultima

#endif