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#pragma once

#include <util/generic/string.h>

#include <exception>

namespace NYT {

////////////////////////////////////////////////////////////////////////////////
// These are poor man's versions of NYT::TErrorException to be used in
// a limited subset of core libraries that are needed to implement NYT::TError.

class TSimpleException
    : public std::exception
{
public:
    explicit TSimpleException(TString message);

    const TString& GetMessage() const;
    const char* what() const noexcept override;

protected:
    const TString Message_;
};

class TCompositeException
    : public TSimpleException
{
public:
    explicit TCompositeException(TString message);
    TCompositeException(
        const std::exception& exception,
        TString message);

    const std::exception_ptr& GetInnerException() const;
    const char* what() const noexcept override;

private:
    const std::exception_ptr InnerException_;
    const TString What_;
};

////////////////////////////////////////////////////////////////////////////////

} // namespace NYT