1 files changed, 45 insertions, 0 deletions
diff --git a/include/mbgl/style/conversion/transition_options.hpp b/include/mbgl/style/conversion/transition_options.hpp
new file mode 100644
index 0000000000..cdd65cfe9f
--- /dev/null
+++ b/include/mbgl/style/conversion/transition_options.hpp
@@ -0,0 +1,45 @@
+#pragma once
+
+#include <mbgl/style/transition_options.hpp>
+#include <mbgl/style/conversion.hpp>
+
+namespace mbgl {
+namespace style {
+namespace conversion {
+
+template <>
+struct Converter<TransitionOptions> {
+public:
+    template <class V>
+    Result<TransitionOptions> operator()(const V& value) const {
+        if (!isObject(value)) {
+            return Error { "transition must be an object" };
+        }
+
+        TransitionOptions result;
+
+        auto duration = objectMember(value, "duration");
+        if (duration) {
+            auto number = toNumber(*duration);
+            if (!number) {
+                return Error { "duration must be a number" };
+            }
+            result.duration = { std::chrono::milliseconds(int64_t(*number)) };
+        }
+
+        auto delay = objectMember(value, "delay");
+        if (delay) {
+            auto number = toNumber(*delay);
+            if (!number) {
+                return Error { "delay must be a number" };
+            }
+            result.delay = { std::chrono::milliseconds(int64_t(*number)) };
+        }
+
+        return result;
+    }
+};
+
+} // namespace conversion
+} // namespace style
+} // namespace mbgl