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empty circulator ranges must not be encoded with default constructed iterators

This commit is contained in:
Andreas Fabri 2006-06-15 13:38:56 +00:00
parent 669cba9472
commit 7b2f06eccb
1 changed files with 8 additions and 7 deletions
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15
Circulator/include/CGAL/circulator.h
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@ -1012,6 +1012,7 @@ private:
I m_begin;
I m_end;
I current;
bool empty;
// The following static iterator is needed so that we have a value
// that can be uniquely compared (the default constructed one can be
@ -1023,16 +1024,17 @@ public:
Circulator_from_iterator() : m_begin( null_iterator),
m_end( null_iterator),
current( null_iterator) {}
current( null_iterator),
empty( true) {}
Circulator_from_iterator( const I& bgn, const I& end)
: m_begin(bgn), m_end(end), current(bgn) {}
: m_begin(bgn), m_end(end), current(bgn), empty(bgn==end) {}
Circulator_from_iterator( const I& bgn, const I& end, const I& cur)
: m_begin(bgn), m_end(end), current(cur) {}
: m_begin(bgn), m_end(end), current(cur), empty(bgn==end) {}
Circulator_from_iterator( const Self& c, const I& cur)
: m_begin( c.m_begin), m_end( c.m_end), current(cur) {}
: m_begin( c.m_begin), m_end( c.m_end), current(cur), empty(c.empty) {}
template <class II, class A1, class A2, class A3>
@ -1041,15 +1043,14 @@ public:
Circulator_from_iterator(
const Circulator_from_iterator<II,A1,A2,A3>& ii)
: m_begin( ii.begin()), m_end( ii.end()),
current(ii.current_iterator()) {}
current(ii.current_iterator()), empty(ii.empty) {}
//
// OPERATIONS
bool operator==( CGAL_NULL_TYPE p) const {
CGAL_assertion( p == CGAL_CIRC_NULL);
CGAL_assertion((m_end == m_begin) || (current != m_end));
return m_end == m_begin;
return empty;
}
bool operator!=( CGAL_NULL_TYPE p) const { return !(*this == p); }
bool operator==( const Self& c) const { return current == c.current;}