opaqueValue.h

//
// Copyright 2022 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
#ifndef PXR_USD_SDF_OPAQUE_VALUE_H
#define PXR_USD_SDF_OPAQUE_VALUE_H
 
#include "pxr/pxr.h"
#include "pxr/usd/sdf/api.h"
 
#include <cstddef>
#include <iosfwd>
 
 
PXR_NAMESPACE_OPEN_SCOPE
 
class SdfOpaqueValue final {};
 
inline bool
operator==(SdfOpaqueValue const &, SdfOpaqueValue const &)
{
    return true;
}
 
inline bool
operator!=(SdfOpaqueValue const &, SdfOpaqueValue const &)
{
    return false;
}
 
inline size_t hash_value(SdfOpaqueValue const &)
{
    // Use a nonzero constant here because some bad hash functions don't deal
    // with zero well. Chosen by fair dice roll.
    return 9;
}
 
SDF_API std::ostream& operator<<(std::ostream &, SdfOpaqueValue const &);
 
PXR_NAMESPACE_CLOSE_SCOPE
 
#endif