ladybird/AK/NonnullPtrVector.h
Andreas Kling a5cdd0afa5 NonnullPtrVector: Add ptr_at() getters for accessing the NonnullPtr
Normally you want to access the T&, but sometimes you need to grab at
the NonnullPtr, for example when moving it out of the Vector before
a call to remove(). This is generally a weird pattern, but I don't have
a better solution at the moment.
2019-08-19 19:04:52 +02:00

56 lines
1.7 KiB
C++

#pragma once
#include <AK/Vector.h>
namespace AK {
template<typename PtrType, int inline_capacity = 0>
class NonnullPtrVector : public Vector<PtrType, inline_capacity> {
typedef typename PtrType::ElementType T;
typedef Vector<PtrType, inline_capacity> Base;
public:
NonnullPtrVector()
{
}
NonnullPtrVector(Vector<PtrType>&& other)
: Base(static_cast<Base&&>(other))
{
}
NonnullPtrVector(const Vector<PtrType>& other)
: Base(static_cast<const Base&>(other))
{
}
using Base::size;
using Iterator = VectorIterator<NonnullPtrVector, T>;
Iterator begin() { return Iterator(*this, 0); }
Iterator end() { return Iterator(*this, size()); }
using ConstIterator = VectorIterator<const NonnullPtrVector, const T>;
ConstIterator begin() const { return ConstIterator(*this, 0); }
ConstIterator end() const { return ConstIterator(*this, size()); }
PtrType& ptr_at(int index) { return Base::at(index); }
const PtrType& ptr_at(int index) const { return Base::at(index); }
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); }
private:
// NOTE: You can't use resize() on a NonnullFooPtrVector since making the vector
// bigger would require being able to default-construct NonnullFooPtrs.
// Instead, use shrink(new_size).
void resize(int) = delete;
};
}