[core] Introduce "collator" expressions

Cross platform parsing and evaluation code.

1 files changed, 8 insertions, 0 deletions

diff --git a/platform/node/src/node_expression.cpp b/platform/node/src/node_expression.cpp
index 9faa41d8b8..c0b512a899 100644
--- a/platform/node/src/node_expression.cpp
+++ b/platform/node/src/node_expression.cpp
@@ -144,6 +144,14 @@ struct ToValue {
         return scope.Escape(result);
     }
 
+    v8::Local<v8::Value> operator()(const Collator&) {
+        // Collators are excluded from constant folding and there's no Literal parser
+        // for them so there shouldn't be any way to serialize this value.
+        assert(false);
+        Nan::EscapableHandleScope scope;
+        return scope.Escape(Nan::Null());
+    }
+
     v8::Local<v8::Value> operator()(const mbgl::Color& color) {
         return operator()(std::vector<Value> {
             static_cast<double>(color.r),