//! Increment operator (prefix).
iterator& operator ++ () {
BOOST_CB_ASSERT(is_valid(m_buff)); // check for uninitialized or invalidated iterator
BOOST_CB_ASSERT(m_it != 0); // check for iterator pointing to end()
m_buff->increment(m_it);
if (m_it == m_buff->m_last)
m_it = 0;
return *this;
}
//! Decrement operator (prefix).
iterator& operator -- () {
BOOST_CB_ASSERT(is_valid(m_buff)); // check for uninitialized or invalidated iterator
BOOST_CB_ASSERT(m_it != m_buff->m_first); // check for iterator pointing to begin()
if (m_it == 0)
m_it = m_buff->m_last;
m_buff->decrement(m_it);
return *this;
}
//! Iterator subtraction.
iterator& operator -= (difference_type n) {
BOOST_CB_ASSERT(is_valid(m_buff)); // check for uninitialized or invalidated iterator
if (n > 0) {
BOOST_CB_ASSERT(*this - m_buff->begin() >= n); // check for too large n
m_it = m_buff->sub(m_it == 0 ? m_buff->m_last : m_it, n);
} else if (n < 0) {
*this += -n;
}
return *this;
}
//! Difference operator.
difference_type operator - (const iterator& it) const {
BOOST_CB_ASSERT(is_valid(m_buff)); // check for uninitialized or invalidated iterator
BOOST_CB_ASSERT(it.is_valid(m_buff)); // check for uninitialized or invalidated iterator
helper_pointer<Traits> lhs = create_helper_pointer(*this);
helper_pointer<Traits> rhs = create_helper_pointer(it);
if (less(rhs, lhs) && lhs.m_it <= rhs.m_it)
return (lhs.m_it - rhs.m_it) + static_cast<difference_type>(m_buff->capacity());
if (less(lhs, rhs) && lhs.m_it >= rhs.m_it)
return (lhs.m_it - rhs.m_it) - static_cast<difference_type>(m_buff->capacity());
return lhs.m_it - rhs.m_it;
}
//! Iterator addition.
iterator& operator += (difference_type n) {
BOOST_CB_ASSERT(is_valid(m_buff)); // check for uninitialized or invalidated iterator
if (n > 0) {
BOOST_CB_ASSERT(m_buff->end() - *this >= n); // check for too large n
m_it = m_buff->add(m_it, n);
if (m_it == m_buff->m_last)
m_it = 0;
} else if (n < 0) {
*this -= -n;
}
return *this;
}
bool operator < (const iterator<Buff, Traits0>& it) const {
BOOST_CB_ASSERT(is_valid(m_buff)); // check for uninitialized or invalidated iterator
BOOST_CB_ASSERT(it.is_valid(m_buff)); // check for uninitialized or invalidated iterator
return linearize_pointer(*this) < linearize_pointer(it);
}
bool operator != (const iterator<Buff, Traits0>& it) const {
BOOST_CB_ASSERT(is_valid(m_buff)); // check for uninitialized or invalidated iterator
BOOST_CB_ASSERT(it.is_valid(m_buff)); // check for uninitialized or invalidated iterator
return m_it != it.m_it;
}
//! Dereferencing operator.
reference operator * () const {
BOOST_CB_ASSERT(is_valid(m_buff)); // check for uninitialized or invalidated iterator
BOOST_CB_ASSERT(m_it != 0); // check for iterator pointing to end()
return *m_it;
}
//! Constructor.
capacity_control(Size buffer_capacity, Size min_buffer_capacity = 0)
: m_capacity(buffer_capacity), m_min_capacity(min_buffer_capacity)
{ // Check for capacity lower than min_capacity.
BOOST_CB_ASSERT(buffer_capacity >= min_buffer_capacity);
}
bool operator < (const iterator<Buff, Traits0>& it) const {
BOOST_CB_ASSERT(is_valid(m_buff)); // check for uninitialized or invalidated iterator
BOOST_CB_ASSERT(it.is_valid(m_buff)); // check for uninitialized or invalidated iterator
return less(create_helper_pointer(*this), create_helper_pointer(it));
}
//! Constructor.
capacity_control(Size capacity, Size min_capacity = 0)
: m_capacity(capacity), m_min_capacity(min_capacity) {
BOOST_CB_ASSERT(capacity >= min_capacity); // check for capacity lower than min_capacity
}