1 files changed, 1 insertions, 31 deletions
diff --git a/include/mbgl/style/conversion/color_ramp_property_value.hpp b/include/mbgl/style/conversion/color_ramp_property_value.hpp
index 290ee6a56c..87049b043b 100644
--- a/include/mbgl/style/conversion/color_ramp_property_value.hpp
+++ b/include/mbgl/style/conversion/color_ramp_property_value.hpp
@@ -2,11 +2,6 @@
 
 #include <mbgl/style/color_ramp_property_value.hpp>
 #include <mbgl/style/conversion.hpp>
-#include <mbgl/style/conversion/constant.hpp>
-#include <mbgl/style/expression/value.hpp>
-#include <mbgl/style/expression/is_constant.hpp>
-#include <mbgl/style/expression/is_expression.hpp>
-#include <mbgl/style/expression/parsing_context.hpp>
 
 namespace mbgl {
 namespace style {
@@ -14,32 +9,7 @@ namespace conversion {
 
 template <>
 struct Converter<ColorRampPropertyValue> {
-    optional<ColorRampPropertyValue> operator()(const Convertible& value, Error& error, bool /* convertTokens */ = false) const {
-        using namespace mbgl::style::expression;
-        if (isUndefined(value)) {
-            return ColorRampPropertyValue();
-        } else if (isExpression(value)) {
-            ParsingContext ctx(type::Color);
-            ParseResult expression = ctx.parseLayerPropertyExpression(value);
-            if (!expression) {
-                error = { ctx.getCombinedErrors() };
-                return {};
-            }
-            assert(*expression);
-            if (!isFeatureConstant(**expression)) {
-                error = { "property expressions not supported" };
-                return {};
-            }
-            if (!isZoomConstant(**expression)) {
-                error = { "zoom expressions not supported" };
-                return {};
-            }
-            return {ColorRampPropertyValue(std::move(*expression))};
-        } else {
-            error = { "color ramp must be an expression" };
-            return {};
-        }
-    }
+    optional<ColorRampPropertyValue> operator()(const Convertible& value, Error& error, bool /* convertTokens */ = false) const;
 };
 
 } // namespace conversion