48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
#pragma once
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#include <mbgl/style/expression/expression.hpp>
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#include <mbgl/style/expression/parsing_context.hpp>
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#include <mbgl/style/conversion.hpp>
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#include <memory>
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namespace mbgl {
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namespace style {
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namespace expression {
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template <typename T>
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class Match : public Expression {
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public:
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using Branches = std::unordered_map<T, std::shared_ptr<Expression>>;
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Match(const type::Type& type_,
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std::unique_ptr<Expression> input_,
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Branches branches_,
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std::unique_ptr<Expression> otherwise_)
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: Expression(Kind::Match, type_),
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input(std::move(input_)),
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branches(std::move(branches_)),
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otherwise(std::move(otherwise_)) {}
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EvaluationResult evaluate(const EvaluationContext& params) const override;
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void eachChild(const std::function<void(const Expression&)>& visit) const override;
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bool operator==(const Expression& e) const override;
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std::vector<optional<Value>> possibleOutputs() const override;
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mbgl::Value serialize() const override;
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std::string getOperator() const override { return "match"; }
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private:
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std::unique_ptr<Expression> input;
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Branches branches;
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std::unique_ptr<Expression> otherwise;
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};
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ParseResult parseMatch(const mbgl::style::conversion::Convertible& value, ParsingContext& ctx);
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} // namespace expression
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} // namespace style
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} // namespace mbgl
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