46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
#pragma once
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#include <mbgl/style/expression/expression.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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class At : public Expression {
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public:
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At(std::unique_ptr<Expression> index_, std::unique_ptr<Expression> input_) :
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Expression(Kind::At, input_->getType().get<type::Array>().itemType),
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index(std::move(index_)),
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input(std::move(input_))
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{}
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static ParseResult parse(const mbgl::style::conversion::Convertible& value, ParsingContext& ctx);
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EvaluationResult evaluate(const EvaluationContext& params) const override;
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void eachChild(const std::function<void(const Expression&)>&) const override;
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bool operator==(const Expression& e) const override {
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if (e.getKind() == Kind::At) {
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auto rhs = static_cast<const At*>(&e);
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return *index == *(rhs->index) && *input == *(rhs->input);
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}
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return false;
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}
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std::vector<optional<Value>> possibleOutputs() const override {
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return { nullopt };
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}
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std::string getOperator() const override { return "at"; }
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private:
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std::unique_ptr<Expression> index;
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std::unique_ptr<Expression> input;
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};
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} // namespace expression
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} // namespace style
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} // namespace mbgl
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