diff options
Diffstat (limited to 'include/mbgl/util/feature.hpp')
-rw-r--r-- | include/mbgl/util/feature.hpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/mbgl/util/feature.hpp b/include/mbgl/util/feature.hpp index b72aa15ddd..4eeceda944 100644 --- a/include/mbgl/util/feature.hpp +++ b/include/mbgl/util/feature.hpp @@ -12,4 +12,21 @@ using PropertyMap = mapbox::geometry::property_map; using FeatureIdentifier = mapbox::geometry::identifier; using Feature = mapbox::geometry::feature<double>; +template <class T> +optional<T> numericValue(const Value& value) { + return value.match( + [] (uint64_t t) { + return optional<T>(t); + }, + [] (int64_t t) { + return optional<T>(t); + }, + [] (double t) { + return optional<T>(t); + }, + [] (auto) { + return optional<T>(); + }); +} + } // namespace mbgl |