1 files changed, 34 insertions, 0 deletions
diff --git a/src/mbgl/style/conversion/get_json_type.cpp b/src/mbgl/style/conversion/get_json_type.cpp
new file mode 100644
index 0000000000..cd3b4608b1
--- /dev/null
+++ b/src/mbgl/style/conversion/get_json_type.cpp
@@ -0,0 +1,34 @@
+#include <mbgl/style/conversion/get_json_type.hpp>
+#include <mbgl/util/feature.hpp>
+
+namespace mbgl {
+namespace style {
+namespace conversion {
+
+std::string getJSONType(const Convertible& value) {
+    if (isUndefined(value)) {
+        return "null";
+    }
+    if (isArray(value)) {
+        return "array";
+    }
+    if (isObject(value)) {
+        return "object";
+    }
+    optional<mbgl::Value> v = toValue(value);
+
+    // Since we've already checked the non-atomic types above, value must then
+    // be a string, number, or boolean -- thus, assume that the toValue()
+    // conversion succeeds.
+    assert(v);
+
+    return v->match(
+        [&] (const std::string&) { return "string"; },
+        [&] (bool) { return "boolean"; },
+        [&] (auto) { return "number"; }
+    );
+}
+
+} // namespace conversion
+} // namespace style
+} // namespace mbgl