1 files changed, 45 insertions, 0 deletions
diff --git a/include/mbgl/style/expression/match.hpp b/include/mbgl/style/expression/match.hpp
new file mode 100644
index 0000000000..e17fe96bfe
--- /dev/null
+++ b/include/mbgl/style/expression/match.hpp
@@ -0,0 +1,45 @@
+#pragma once
+
+#include <mbgl/style/expression/expression.hpp>
+#include <mbgl/style/expression/parsing_context.hpp>
+#include <mbgl/style/conversion.hpp>
+
+#include <memory>
+
+namespace mbgl {
+namespace style {
+namespace expression {
+
+template <typename T>
+class Match : public Expression {
+public:
+    using Branches = std::unordered_map<T, std::shared_ptr<Expression>>;
+
+    Match(type::Type type_,
+          std::unique_ptr<Expression> input_,
+          Branches branches_,
+          std::unique_ptr<Expression> otherwise_
+    ) : Expression(type_),
+        input(std::move(input_)),
+        branches(std::move(branches_)),
+        otherwise(std::move(otherwise_))
+    {}
+
+    void eachChild(const std::function<void(const Expression&)>& visit) const override;
+
+    bool operator==(const Expression& e) const override;
+
+    EvaluationResult evaluate(const EvaluationContext& params) const override;
+    
+private:
+    
+    std::unique_ptr<Expression> input;
+    Branches branches;
+    std::unique_ptr<Expression> otherwise;
+};
+
+ParseResult parseMatch(const mbgl::style::conversion::Convertible& value, ParsingContext& ctx);
+
+} // namespace expression
+} // namespace style
+} // namespace mbgl