/usr/include/mapbox/geometry/feature.hpp is in libmapbox-geometry-dev 0.9.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 | #pragma once
#include <mapbox/geometry/geometry.hpp>
#include <mapbox/variant.hpp>
#include <cstdint>
#include <string>
#include <vector>
#include <unordered_map>
#include <experimental/optional>
namespace mapbox {
namespace geometry {
struct value;
struct null_value_t
{
constexpr null_value_t() {}
constexpr null_value_t(std::nullptr_t) {}
};
constexpr bool operator==(const null_value_t&, const null_value_t&) { return true; }
constexpr bool operator!=(const null_value_t&, const null_value_t&) { return false; }
constexpr bool operator<(const null_value_t&, const null_value_t&) { return false; }
constexpr null_value_t null_value = null_value_t();
// Multiple numeric types (uint64_t, int64_t, double) are present in order to support
// the widest possible range of JSON numbers, which do not have a maximum range.
// Implementations that produce `value`s should use that order for type preference,
// using uint64_t for positive integers, int64_t for negative integers, and double
// for non-integers and integers outside the range of 64 bits.
using value_base = mapbox::util::variant<null_value_t, bool, uint64_t, int64_t, double, std::string,
mapbox::util::recursive_wrapper<std::vector<value>>,
mapbox::util::recursive_wrapper<std::unordered_map<std::string, value>>>;
struct value : value_base
{
using value_base::value_base;
};
using property_map = std::unordered_map<std::string, value>;
// The same considerations and requirement for numeric types apply as for `value_base`.
using identifier = mapbox::util::variant<uint64_t, int64_t, double, std::string>;
template <class T>
struct feature
{
using coordinate_type = T;
using geometry_type = mapbox::geometry::geometry<T>; // Fully qualified to avoid GCC -fpermissive error.
geometry_type geometry;
property_map properties {};
std::experimental::optional<identifier> id {};
// GCC 4.9 does not support C++14 aggregates with non-static data member
// initializers.
feature(geometry_type geometry_,
property_map properties_ = property_map {},
std::experimental::optional<identifier> id_ = std::experimental::optional<identifier> {})
: geometry(std::move(geometry_)),
properties(std::move(properties_)),
id(std::move(id_)) {}
};
template <class T>
constexpr bool operator==(feature<T> const& lhs, feature<T> const& rhs)
{
return lhs.id == rhs.id && lhs.geometry == rhs.geometry && lhs.properties == rhs.properties;
}
template <class T>
constexpr bool operator!=(feature<T> const& lhs, feature<T> const& rhs)
{
return !(lhs == rhs);
}
template <class T, template <typename...> class Cont = std::vector>
struct feature_collection : Cont<feature<T>>
{
using coordinate_type = T;
using feature_type = feature<T>;
using container_type = Cont<feature_type>;
using container_type::container_type;
};
} // namespace geometry
} // namespace mapbox
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