// Helper base classes and function for custom objects.

#ifndef THIRD_PARTY_CEL_CPP_COMMON_CUSTOM_OBJECT_H_

#define THIRD_PARTY_CEL_CPP_COMMON_CUSTOM_OBJECT_H_

#include "common/value.h"

namespace google {

namespace api {

namespace expr {

namespace common {

// An object base class for objects that do not support direct member access.

class OpaqueObject : public Object {

public:

// Does not contain any accessible members.

Value GetMember(absl::string_view name) const final;

google::rpc::Status ForEach(

const std::function<google::rpc::Status(absl::string_view, const Value&)>&

call) const final;

// Assume to own value (can be overridden).

inline bool owns_value() const override { return true; }

// Require a custom ToString function.

std::string ToString() const override = 0;

protected:

// Require a custom hash function.

std::size_t ComputeHash() const override = 0;

};

} // namespace common

} // namespace expr

} // namespace api

} // namespace google

#endif // THIRD_PARTY_CEL_CPP_COMMON_CUSTOM_OBJECT_H_