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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
//
#pragma once
#include "polymorphicarray.h"
#include <vespa/vespalib/util/memory.h>
#include <vector>
namespace vespalib {
template <typename T, typename B>
class PrimitiveArrayT final : public IArrayT<B>
{
using typename IArrayT<B>::iterator;
public:
PrimitiveArrayT() : _array() { }
~PrimitiveArrayT() { }
const T & operator [] (size_t i) const override { return _array[i]; }
T & operator [] (size_t i) override { return _array[i]; }
void resize(size_t sz) override { _array.resize(sz); }
void reserve(size_t sz) override { _array.reserve(sz); }
void clear() override { _array.clear(); }
IArrayT<B> * clone() const override { return new PrimitiveArrayT<T, B>(*this); }
size_t size() const override { return _array.size(); }
iterator erase(iterator it) override { _array.erase(_array.begin() + (it - this->begin())); return it; }
void push_back(const B & v) override {
_array.emplace_back();
_array.back().assign(v);
}
private:
std::vector<T> _array;
};
template <typename B>
class ComplexArrayT final : public IArrayT<B>
{
using typename IArrayT<B>::iterator;
public:
class Factory {
public:
using UP = std::unique_ptr<Factory>;
using CP = vespalib::CloneablePtr<Factory>;
virtual B * create() = 0;
virtual Factory * clone() const = 0;
virtual ~Factory() { }
};
explicit ComplexArrayT(typename Factory::UP factory) : _array(), _factory(factory.release()) { }
~ComplexArrayT() { }
const B & operator [] (size_t i) const override { return *_array[i]; }
B & operator [] (size_t i) override { return *_array[i]; }
void resize(size_t sz) override {
_array.resize(sz);
for (auto & cp : _array) {
if ( cp.get() == nullptr) {
cp.reset(_factory->create());
}
}
}
void reserve(size_t sz) override { _array.reserve(sz); }
void clear() override { _array.clear(); }
IArrayT<B> * clone() const override { return new ComplexArrayT<B>(*this); }
size_t size() const override { return _array.size(); }
iterator erase(iterator it) override { _array.erase(_array.begin() + (it - this->begin())); return it; }
void push_back(const B & v) override { _array.push_back(v.clone()); }
private:
using CP = vespalib::CloneablePtr<B>;
std::vector<CP> _array;
typename Factory::CP _factory;
};
}
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