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