1 files changed, 5 insertions, 10 deletions
diff --git a/include/mbgl/style/expression/format_expression.hpp b/include/mbgl/style/expression/format_expression.hpp
index b00674a88e..09feaf4819 100644
--- a/include/mbgl/style/expression/format_expression.hpp
+++ b/include/mbgl/style/expression/format_expression.hpp
@@ -1,11 +1,7 @@
 #pragma once
 
 #include <mbgl/style/expression/expression.hpp>
-#include <mbgl/style/expression/formatted.hpp>
 #include <mbgl/style/expression/parsing_context.hpp>
-#include <mbgl/style/conversion.hpp>
-
-#include <memory>
 
 namespace mbgl {
 namespace style {
@@ -14,16 +10,18 @@ namespace expression {
 struct FormatExpressionSection {
     FormatExpressionSection(std::unique_ptr<Expression> text_,
                             optional<std::unique_ptr<Expression>> fontScale_,
-                            optional<std::unique_ptr<Expression>> textFont_);
+                            optional<std::unique_ptr<Expression>> textFont_,
+                            optional<std::unique_ptr<Expression>> sectionID_);
     
     std::shared_ptr<Expression> text;
     optional<std::shared_ptr<Expression>> fontScale;
     optional<std::shared_ptr<Expression>> textFont;
+    optional<std::shared_ptr<Expression>> sectionID;
 };
     
-class FormatExpression : public Expression {
+class FormatExpression final : public Expression {
 public:
-    FormatExpression(std::vector<FormatExpressionSection> sections);
+    explicit FormatExpression(std::vector<FormatExpressionSection> sections);
     
     EvaluationResult evaluate(const EvaluationContext&) const override;
     static ParseResult parse(const mbgl::style::conversion::Convertible&, ParsingContext&);
@@ -42,9 +40,6 @@ public:
     std::string getOperator() const override { return "format"; }
 private:
     std::vector<FormatExpressionSection> sections;
-    std::unique_ptr<Expression> text;
-    optional<std::unique_ptr<Expression>> fontScale;
-    optional<std::unique_ptr<Expression>> textFont;
 };
     
 } // namespace expression