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// Copyright (C) 2008-2018 Lorenzo Caminiti
// Distributed under the Boost Software License, Version 1.0 (see accompanying
// file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt).
// See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html
//[cline90_vector
#ifndef VECTOR_HPP_
#define VECTOR_HPP_
#include <boost/contract.hpp>
// NOTE: Incomplete contract assertions, addressing only `size`.
template<typename T>
class vector
#define BASES private boost::contract::constructor_precondition<vector<T> >
: BASES
{
friend class boost::contract::access;
typedef BOOST_CONTRACT_BASE_TYPES(BASES) base_types;
#undef BASES
void invariant() const {
BOOST_CONTRACT_ASSERT(size() >= 0);
}
public:
explicit vector(int count = 10) :
boost::contract::constructor_precondition<vector>([&] {
BOOST_CONTRACT_ASSERT(count >= 0);
}),
data_(new T[count]),
size_(count)
{
boost::contract::check c = boost::contract::constructor(this)
.postcondition([&] {
BOOST_CONTRACT_ASSERT(size() == count);
})
;
for(int i = 0; i < size_; ++i) data_[i] = T();
}
virtual ~vector() {
boost::contract::check c = boost::contract::destructor(this);
delete[] data_;
}
int size() const {
boost::contract::check c = boost::contract::public_function(this);
return size_; // Non-negative result already checked by invariant.
}
void resize(int count) {
boost::contract::check c = boost::contract::public_function(this)
.precondition([&] {
BOOST_CONTRACT_ASSERT(count >= 0);
})
.postcondition([&] {
BOOST_CONTRACT_ASSERT(size() == count);
})
;
T* slice = new T[count];
for(int i = 0; i < count && i < size_; ++i) slice[i] = data_[i];
delete[] data_;
data_ = slice;
size_ = count;
}
T& operator[](int index) {
boost::contract::check c = boost::contract::public_function(this)
.precondition([&] {
BOOST_CONTRACT_ASSERT(index >= 0);
BOOST_CONTRACT_ASSERT(index < size());
})
;
return data_[index];
}
T const& operator[](int index) const {
boost::contract::check c = boost::contract::public_function(this)
.precondition([&] {
BOOST_CONTRACT_ASSERT(index >= 0);
BOOST_CONTRACT_ASSERT(index < size());
})
;
return data_[index];
}
private:
T* data_;
int size_;
};
#endif // #include guard
//]
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