common/include/QtCore/5.5.0/QtCore/private/qpodlist_p.h

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#ifndef QPODLIST_P_H
#define QPODLIST_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <QtCore/qvarlengtharray.h>

QT_BEGIN_NAMESPACE


template <typename T, int Prealloc>
class QPodList : public QVarLengthArray<T, Prealloc>
{
    using QVarLengthArray<T, Prealloc>::s;
    using QVarLengthArray<T, Prealloc>::a;
    using QVarLengthArray<T, Prealloc>::ptr;
    using QVarLengthArray<T, Prealloc>::realloc;
public:
    inline explicit QPodList(int size = 0)
        : QVarLengthArray<T, Prealloc>(size)
    {}

    inline void insert(int idx, const T &t)
    {
        const int sz = s++;
        if (s == a)
            realloc(s, s << 1);
        ::memmove(ptr + idx + 1, ptr + idx, (sz - idx) * sizeof(T));
        ptr[idx] = t;
    }

    inline void removeAll(const T &t)
    {
        int i = 0;
        for (int j = 0; j < s; ++j) {
            if (ptr[j] != t)
                ptr[i++] = ptr[j];
        }
        s = i;
    }

    inline void removeAt(int idx)
    {
        Q_ASSERT(idx >= 0 && idx < s);
        ::memmove(ptr + idx, ptr + idx + 1, (s - idx - 1) * sizeof(T));
        --s;
    }

    inline T takeFirst()
    {
        Q_ASSERT(s > 0);
        T tmp = ptr[0];
        removeAt(0);
        return tmp;
    }
};

QT_END_NAMESPACE

#endif // QPODLIST_P_H