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Implement saity checks for irange and its returned type iterator_range.

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The implementation does not support backwards counting ranges, but fails
to assert on this condition. Fix this once and for all.
This commit is contained in:
Daniel J. Hofmann 2015-09-07 18:20:58 +02:00
parent f95a4b9b46
commit 2470494009
1 changed files with 3 additions and 0 deletions
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3
util/integer_range.hpp
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@ -28,6 +28,8 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef INTEGER_RANGE_HPP #ifndef INTEGER_RANGE_HPP
#define INTEGER_RANGE_HPP #define INTEGER_RANGE_HPP
#include <boost/assert.hpp>
#include <type_traits> #include <type_traits>
namespace osrm namespace osrm
@ -42,6 +44,7 @@ template <typename Integer> class range
public: public:
range(Integer start, Integer end) noexcept : last(end), iter(start) range(Integer start, Integer end) noexcept : last(end), iter(start)
{ {
BOOST_ASSERT_MSG(start <= end, "backwards counting ranges not suppoted");
static_assert(std::is_integral<Integer>::value, "range type must be integral"); static_assert(std::is_integral<Integer>::value, "range type must be integral");
} }