projects / ceph.git / blame
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|---|---|---|
| 7c673cae FG |
1 | // Boost.Geometry (aka GGL, Generic Geometry Library) |
| 2 | ||
| 3 | // Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands. | |
| 4 | // Copyright (c) 2008-2015 Bruno Lalande, Paris, France. | |
| 5 | // Copyright (c) 2009-2015 Mateusz Loskot, London, UK. | |
| 6 | ||
| 7 | // This file was modified by Oracle on 2015. | |
| 8 | // Modifications copyright (c) 2015, Oracle and/or its affiliates. | |
| 9 | ||
| 10 | // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle | |
| 11 | ||
| 12 | // Use, modification and distribution is subject to the Boost Software License, | |
| 13 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
| 14 | // http://www.boost.org/LICENSE_1_0.txt) | |
| 15 | ||
| 16 | #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_THROW_ON_EMPTY_INPUT_HPP | |
| 17 | #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_THROW_ON_EMPTY_INPUT_HPP | |
| 18 | ||
| 19 | #include <boost/geometry/core/exception.hpp> | |
| 20 | #include <boost/geometry/algorithms/is_empty.hpp> | |
| 21 | ||
| 22 | // BSG 2012-02-06: we use this currently only for distance. | |
| 23 | // For other scalar results area,length,perimeter it is commented on purpose. | |
| 24 | // Reason is that for distance there is no other choice. distance of two | |
| 25 | // empty geometries (or one empty) should NOT return any value. | |
| 26 | // But for area it is no problem to be 0. | |
| 27 | // Suppose: area(intersection(a,b)). We (probably) don't want a throw there... | |
| 28 | ||
| 29 | // So decided that at least for Boost 1.49 this is commented for | |
| 30 | // scalar results, except distance. | |
| 31 | ||
| 32 | #if defined(BOOST_GEOMETRY_EMPTY_INPUT_NO_THROW) | |
| 33 | #include <boost/core/ignore_unused.hpp> | |
| 34 | #endif | |
| 35 | ||
| 36 | namespace boost { namespace geometry | |
| 37 | { | |
| 38 | ||
| 39 | #ifndef DOXYGEN_NO_DETAIL | |
| 40 | namespace detail | |
| 41 | { | |
| 42 | ||
| 43 | template <typename Geometry> | |
| 44 | inline void throw_on_empty_input(Geometry const& geometry) | |
| 45 | { | |
| 46 | #if ! defined(BOOST_GEOMETRY_EMPTY_INPUT_NO_THROW) | |
| 47 | if (geometry::is_empty(geometry)) | |
| 48 | { | |
| 49 | throw empty_input_exception(); | |
| 50 | } | |
| 51 | #else | |
| 52 | boost::ignore_unused(geometry); | |
| 53 | #endif | |
| 54 | } | |
| 55 | ||
| 56 | } // namespace detail | |
| 57 | #endif // DOXYGEN_NO_DETAIL | |
| 58 | ||
| 59 | ||
| 60 | }} // namespace boost::geometry | |
| 61 | ||
| 62 | ||
| 63 | #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_THROW_ON_EMPTY_INPUT_HPP | |
| 64 |