| 1 | #pragma once |
|---|---|
| 2 | |
| 3 | #include <mbgl/style/expression/expression.hpp> |
| 4 | #include <mbgl/style/expression/parsing_context.hpp> |
| 5 | #include <mbgl/style/conversion.hpp> |
| 6 | |
| 7 | #include <memory> |
| 8 | |
| 9 | namespace mbgl { |
| 10 | namespace style { |
| 11 | namespace expression { |
| 12 | |
| 13 | template <typename T> |
| 14 | class Match : public Expression { |
| 15 | public: |
| 16 | using Branches = std::unordered_map<T, std::shared_ptr<Expression>>; |
| 17 | |
| 18 | Match(type::Type type_, |
| 19 | std::unique_ptr<Expression> input_, |
| 20 | Branches branches_, |
| 21 | std::unique_ptr<Expression> otherwise_ |
| 22 | ) : Expression(Kind::Match, type_), |
| 23 | input(std::move(input_)), |
| 24 | branches(std::move(branches_)), |
| 25 | otherwise(std::move(otherwise_)) |
| 26 | {} |
| 27 | |
| 28 | EvaluationResult evaluate(const EvaluationContext& params) const override; |
| 29 | |
| 30 | void eachChild(const std::function<void(const Expression&)>& visit) const override; |
| 31 | |
| 32 | bool operator==(const Expression& e) const override; |
| 33 | |
| 34 | std::vector<optional<Value>> possibleOutputs() const override; |
| 35 | |
| 36 | mbgl::Value serialize() const override; |
| 37 | std::string getOperator() const override { return "match"; } |
| 38 | private: |
| 39 | std::unique_ptr<Expression> input; |
| 40 | Branches branches; |
| 41 | std::unique_ptr<Expression> otherwise; |
| 42 | }; |
| 43 | |
| 44 | ParseResult parseMatch(const mbgl::style::conversion::Convertible& value, ParsingContext& ctx); |
| 45 | |
| 46 | } // namespace expression |
| 47 | } // namespace style |
| 48 | } // namespace mbgl |
| 49 |