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serenity/AK/NonnullRefPtrVector.h
Andreas Kling 48108ec474 AK: Support range-for iteration over a NonnullRefPtrVector<T>.
This means you can now do this:

void harmonize(NonnullRefPtrVector<Voice>& voices)
{
    for (auto& voice : voices) {
        voice.sing(); // Look, no "->"!
    }
}

Pretty dang cool :^)
2019-06-27 12:11:58 +02:00

44 lines
1.3 KiB
C++

#pragma once
#include <AK/NonnullRefPtr.h>
#include <AK/Vector.h>
namespace AK {
template<typename T, int inline_capacity = 0>
class NonnullRefPtrVector : public Vector<NonnullRefPtr<T>, inline_capacity> {
typedef Vector<NonnullRefPtr<T>> Base;
public:
NonnullRefPtrVector(Vector<NonnullRefPtr<T>>&& other)
: Base(static_cast<Base&&>(other))
{
}
NonnullRefPtrVector(const Vector<NonnullRefPtr<T>>& other)
: Base(static_cast<const Base&>(other))
{
}
using Base::size;
using Iterator = VectorIterator<NonnullRefPtrVector, T>;
Iterator begin() { return Iterator(*this, 0); }
Iterator end() { return Iterator(*this, size()); }
using ConstIterator = ConstVectorIterator<NonnullRefPtrVector, T>;
ConstIterator begin() const { return ConstIterator(*this, 0); }
ConstIterator end() const { return ConstIterator(*this, size()); }
T& at(int index) { return *Base::at(index); }
const T& at(int index) const { return *Base::at(index); }
T& operator[](int index) { return at(index); }
const T& operator[](int index) const { return at(index); }
T& first() { return at(0); }
const T& first() const { return at(0); }
T& last() { return at(size() - 1); }
const T& last() const { return at(size() - 1); }
};
}
using AK::NonnullRefPtrVector;