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#pragma once
#include <mbgl/style/expression/collator_expression.hpp>
#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 {
ParseResult parseComparison(const mbgl::style::conversion::Convertible&, ParsingContext&);
class BasicComparison : public Expression {
public:
using CompareFunctionType = bool (*)(const Value&, const Value&);
BasicComparison(
std::string op,
std::unique_ptr<Expression> lhs,
std::unique_ptr<Expression> rhs);
void eachChild(const std::function<void(const Expression&)>& visit) const override;
bool operator==(const Expression&) const override;
EvaluationResult evaluate(const EvaluationContext&) const override;
std::vector<optional<Value>> possibleOutputs() const override;
std::string getOperator() const override;
private:
std::string op;
CompareFunctionType compare;
std::unique_ptr<Expression> lhs;
std::unique_ptr<Expression> rhs;
bool needsRuntimeTypeCheck;
};
class CollatorComparison : public Expression {
public:
using CompareFunctionType = bool (*)(const std::string&, const std::string&, const Collator&);
CollatorComparison(
std::string op,
std::unique_ptr<Expression> lhs,
std::unique_ptr<Expression> rhs,
std::unique_ptr<Expression> collator);
void eachChild(const std::function<void(const Expression&)>& visit) const override;
bool operator==(const Expression&) const override;
EvaluationResult evaluate(const EvaluationContext&) const override;
std::vector<optional<Value>> possibleOutputs() const override;
std::string getOperator() const override;
private:
std::string op;
CompareFunctionType compare;
std::unique_ptr<Expression> lhs;
std::unique_ptr<Expression> rhs;
std::unique_ptr<Expression> collator;
bool needsRuntimeTypeCheck;
};
} // namespace expression
} // namespace style
} // namespace mbgl
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