.. _program_listing_file_include_opentelemetry_common_attribute_value.h:

Program Listing for File attribute_value.h
==========================================

|exhale_lsh| :ref:`Return to documentation for file <file_include_opentelemetry_common_attribute_value.h>` (``include/opentelemetry/common/attribute_value.h``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   // Copyright The OpenTelemetry Authors
   // SPDX-License-Identifier: Apache-2.0
   
   #pragma once
   
   #include <cstdint>
   
   #include "opentelemetry/nostd/span.h"
   #include "opentelemetry/nostd/string_view.h"
   #include "opentelemetry/nostd/variant.h"
   #include "opentelemetry/version.h"
   
   OPENTELEMETRY_BEGIN_NAMESPACE
   namespace common
   {
   using AttributeValue =
       nostd::variant<bool,
                      int32_t,
                      int64_t,
                      uint32_t,
                      double,
                      nostd::string_view,
                      nostd::span<const bool>,
                      nostd::span<const int32_t>,
                      nostd::span<const int64_t>,
                      nostd::span<const uint32_t>,
                      nostd::span<const double>,
                      nostd::span<const nostd::string_view>,
                      // Not currently supported by the specification, but reserved for future use.
                      // Added to provide support for all primitive C++ types.
                      uint64_t,
                      // Not currently supported by the specification, but reserved for future use.
                      // Added to provide support for all primitive C++ types.
                      nostd::span<const uint64_t>,
                      // Not currently supported by the specification, but reserved for future use.
                      // See https://github.com/open-telemetry/opentelemetry-specification/issues/780
                      nostd::span<const uint8_t>>;
   
   enum AttributeType
   {
     kTypeBool,
     kTypeInt,
     kTypeInt64,
     kTypeUInt,
     kTypeDouble,
     kTypeString,
     kTypeSpanBool,
     kTypeSpanInt,
     kTypeSpanInt64,
     kTypeSpanUInt,
     kTypeSpanDouble,
     kTypeSpanString,
     kTypeUInt64,
     kTypeSpanUInt64,
     kTypeSpanByte
   };
   
   }  // namespace common
   OPENTELEMETRY_END_NAMESPACE