1 files changed, 16 insertions, 56 deletions
diff --git a/platform/darwin/src/MGLStyleLayer.mm.ejs b/platform/darwin/src/MGLStyleLayer.mm.ejs
index da67cbd633..8101c1f463 100644
--- a/platform/darwin/src/MGLStyleLayer.mm.ejs
+++ b/platform/darwin/src/MGLStyleLayer.mm.ejs
@@ -118,52 +118,32 @@ namespace mbgl {
 #pragma mark - Accessing the Layout Attributes
 
 <% for (const property of layoutProperties) { -%>
-- (void)set<%- camelize(property.name) %>:(MGLStyleValue<<%- propertyType(property, true) %>> *)<%- objCName(property) %> {
+- (void)set<%- camelize(property.name) %>:(NSExpression *)<%- objCName(property) %> {
     MGLAssertStyleLayerIsValid();
 
 <% if (property["property-function"]) { -%>
-    auto mbglValue = MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toDataDrivenPropertyValue(<%- objCName(property) %>);
+    auto mbglValue = MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toPropertyValue<mbgl::style::DataDrivenPropertyValue<<%- valueTransformerArguments(property)[0] %>>>(<%- objCName(property) %>);
 <% } else { -%>
-<% if (property.type == "enum") { -%>
-    auto mbglValue = MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toEnumPropertyValue(<%- objCName(property) %>);
-<% } else if (property.function == "piecewise-constant") { -%>
-    auto mbglValue = MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toPropertyValue(<%- objCName(property) %>);
-<% } else { -%>
-    auto mbglValue = MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toInterpolatablePropertyValue(<%- objCName(property) %>);
-<% } -%>
+    auto mbglValue = MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toPropertyValue<mbgl::style::PropertyValue<<%- valueTransformerArguments(property)[0] %>>>(<%- objCName(property) %>);
 <% } -%>
     self.rawLayer->set<%- camelize(originalPropertyName(property)) %>(mbglValue);
 }
 
-- (MGLStyleValue<<%- propertyType(property, true) %>> *)<%- objCGetter(property) %> {
+- (NSExpression *)<%- objCGetter(property) %> {
     MGLAssertStyleLayerIsValid();
 
     auto propertyValue = self.rawLayer->get<%- camelize(originalPropertyName(property)) %>();
-<% if (property["property-function"]) { -%>
     if (propertyValue.isUndefined()) {
-        return MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toDataDrivenStyleValue(self.rawLayer->getDefault<%- camelize(originalPropertyName(property)) %>());
+        propertyValue = self.rawLayer->getDefault<%- camelize(originalPropertyName(property)) %>();
     }
-    return MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toDataDrivenStyleValue(propertyValue);
-<% } else { -%>
-<% if (property.type == "enum") { -%>
-    if (propertyValue.isUndefined()) {
-        return MGLStyleValueTransformer<<%- mbglType(property) %>, NSValue *, <%- mbglType(property) %>, MGL<%- camelize(property.name) %>>().toEnumStyleValue(self.rawLayer->getDefault<%- camelize(originalPropertyName(property)) %>());
-    }
-    return MGLStyleValueTransformer<<%- mbglType(property) %>, NSValue *, <%- mbglType(property) %>, MGL<%- camelize(property.name) %>>().toEnumStyleValue(propertyValue);
-<% } else { -%>
-    if (propertyValue.isUndefined()) {
-        return MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toStyleValue(self.rawLayer->getDefault<%- camelize(originalPropertyName(property)) %>());
-    }
-    return MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toStyleValue(propertyValue);
-<% } -%>
-<% } -%>
+    return MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toExpression(propertyValue);
 }
 
 <% if (property.original) { -%>
-- (void)set<%- camelize(originalPropertyName(property)) %>:(MGLStyleValue<<%- propertyType(property, true) %>> *)<%- camelizeWithLeadingLowercase(originalPropertyName(property)) %> {
+- (void)set<%- camelize(originalPropertyName(property)) %>:(NSExpression *)<%- camelizeWithLeadingLowercase(originalPropertyName(property)) %> {
 }
 
-- (MGLStyleValue<<%- propertyType(property, true) %>> *)<%- camelizeWithLeadingLowercase(originalPropertyName(property)) %> {
+- (NSExpression *)<%- camelizeWithLeadingLowercase(originalPropertyName(property)) %> {
     return self.<%- objCGetter(property) %>;
 }
 
@@ -174,45 +154,25 @@ namespace mbgl {
 #pragma mark - Accessing the Paint Attributes
 <% for (const property of paintProperties) { -%>
 
-- (void)set<%- camelize(property.name) %>:(MGLStyleValue<<%- propertyType(property, true) %>> *)<%- objCName(property) %> {
+- (void)set<%- camelize(property.name) %>:(NSExpression *)<%- objCName(property) %> {
     MGLAssertStyleLayerIsValid();
 
 <% if (property["property-function"]) { -%>
-    auto mbglValue = MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toDataDrivenPropertyValue(<%- objCName(property) %>);
+    auto mbglValue = MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toPropertyValue<mbgl::style::DataDrivenPropertyValue<<%- valueTransformerArguments(property)[0] %>>>(<%- objCName(property) %>);
 <% } else { -%>
-<% if (property.type == "enum") { -%>
-    auto mbglValue = MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toEnumPropertyValue(<%- objCName(property) %>);
-<% } else if (property.function == "piecewise-constant") { -%>
-    auto mbglValue = MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toPropertyValue(<%- objCName(property) %>);
-<% } else { -%>
-    auto mbglValue = MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toInterpolatablePropertyValue(<%- objCName(property) %>);
-<% } -%>
+    auto mbglValue = MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toPropertyValue<mbgl::style::PropertyValue<<%- valueTransformerArguments(property)[0] %>>>(<%- objCName(property) %>);
 <% } -%>
     self.rawLayer->set<%- camelize(originalPropertyName(property)) %>(mbglValue);
 }
 
-- (MGLStyleValue<<%- propertyType(property, true) %>> *)<%- objCGetter(property) %> {
+- (NSExpression *)<%- objCGetter(property) %> {
     MGLAssertStyleLayerIsValid();
 
     auto propertyValue = self.rawLayer->get<%- camelize(originalPropertyName(property)) %>();
-<% if (property["property-function"]) { -%>
     if (propertyValue.isUndefined()) {
-        return MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toDataDrivenStyleValue(self.rawLayer->getDefault<%- camelize(originalPropertyName(property)) %>());
+        propertyValue = self.rawLayer->getDefault<%- camelize(originalPropertyName(property)) %>();
     }
-    return MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toDataDrivenStyleValue(propertyValue);
-<% } else { -%>
-<% if (property.type == "enum") { -%>
-    if (propertyValue.isUndefined()) {
-        return MGLStyleValueTransformer<<%- mbglType(property) %>, NSValue *, <%- mbglType(property) %>, MGL<%- camelize(property.name) %>>().toEnumStyleValue(self.rawLayer->getDefault<%- camelize(originalPropertyName(property)) %>());
-    }
-    return MGLStyleValueTransformer<<%- mbglType(property) %>, NSValue *, <%- mbglType(property) %>, MGL<%- camelize(property.name) %>>().toEnumStyleValue(propertyValue);
-<% } else { -%>
-    if (propertyValue.isUndefined()) {
-        return MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toStyleValue(self.rawLayer->getDefault<%- camelize(originalPropertyName(property)) %>());
-    }
-    return MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toStyleValue(propertyValue);
-<% } -%>
-<% } -%>
+    return MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toExpression(propertyValue);
 }
 <% if (property["transition"]) { -%>
 
@@ -236,10 +196,10 @@ namespace mbgl {
 <% } -%>
 <% if (property.original) { -%>
 
-- (void)set<%- camelize(originalPropertyName(property)) %>:(MGLStyleValue<<%- propertyType(property, true) %>> *)<%- camelizeWithLeadingLowercase(originalPropertyName(property)) %> {
+- (void)set<%- camelize(originalPropertyName(property)) %>:(NSExpression *)<%- camelizeWithLeadingLowercase(originalPropertyName(property)) %> {
 }
 
-- (MGLStyleValue<<%- propertyType(property, true) %>> *)<%- camelizeWithLeadingLowercase(originalPropertyName(property)) %> {
+- (NSExpression *)<%- camelizeWithLeadingLowercase(originalPropertyName(property)) %> {
     return self.<%- objCGetter(property) %>;
 }
 <% } -%>