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Diffstat (limited to 'include/mbgl/style/class_dictionary.hpp')
-rw-r--r-- | include/mbgl/style/class_dictionary.hpp | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/include/mbgl/style/class_dictionary.hpp b/include/mbgl/style/class_dictionary.hpp new file mode 100644 index 0000000000..c7f9c6a284 --- /dev/null +++ b/include/mbgl/style/class_dictionary.hpp @@ -0,0 +1,32 @@ +#ifndef MBGL_STYLE_CLASS_DICTIONARY +#define MBGL_STYLE_CLASS_DICTIONARY + +#include <cstdint> +#include <string> +#include <unordered_map> + +namespace mbgl { + +enum class ClassID : uint32_t { + Fallback = 0, // These values are from the fallback properties + Default = 1, // These values are from the default style for a layer + Named = 2 // These values (and all subsequent IDs) are from a named style from the layer +}; + +class ClassDictionary { +public: + // Returns an ID for a class name. If the class name does not yet have an ID, one is + // auto-generated and stored for future reference. + static ClassID Lookup(const std::string &class_name); + + // Returns either Fallback, Default or Named, depending on the type of the class id. + static ClassID Normalize(ClassID id); + +private: + static std::unordered_map<std::string, ClassID> store; + static uint32_t offset; +}; + +} + +#endif |