includes/opentelemetry/context/context_value.h

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
 
#pragma once
 
#include <cstdint>
 
#include "opentelemetry/nostd/shared_ptr.h"
#include "opentelemetry/nostd/variant.h"
#include "opentelemetry/version.h"
 
OPENTELEMETRY_BEGIN_NAMESPACE
namespace baggage
{
class Baggage;
}  // namespace baggage
 
namespace trace
{
class Span;
class SpanContext;
}  // namespace trace
 
namespace context
{
using ContextValue = nostd::variant<nostd::monostate,
                                    bool,
                                    int64_t,
                                    uint64_t,
                                    double,
                                    nostd::shared_ptr<trace::Span>,
                                    nostd::shared_ptr<trace::SpanContext>,
                                    nostd::shared_ptr<baggage::Baggage>>;
}  // namespace context
OPENTELEMETRY_END_NAMESPACE