.. _program_listing_file_include_opentelemetry_trace_scope.h:

Program Listing for File scope.h
================================

|exhale_lsh| :ref:`Return to documentation for file <file_include_opentelemetry_trace_scope.h>` (``include/opentelemetry/trace/scope.h``)

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

.. code-block:: cpp

   // Copyright 2020, OpenTelemetry Authors
   //
   // Licensed under the Apache License, Version 2.0 (the "License");
   // you may not use this file except in compliance with the License.
   // You may obtain a copy of the License at
   //
   //     http://www.apache.org/licenses/LICENSE-2.0
   //
   // Unless required by applicable law or agreed to in writing, software
   // distributed under the License is distributed on an "AS IS" BASIS,
   // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   // See the License for the specific language governing permissions and
   // limitations under the License.
   
   #pragma once
   
   #include "opentelemetry/context/runtime_context.h"
   #include "opentelemetry/trace/span.h"
   #include "opentelemetry/version.h"
   
   OPENTELEMETRY_BEGIN_NAMESPACE
   namespace trace
   {
   class Scope final
   {
   public:
     Scope(const nostd::shared_ptr<Span> &span) noexcept
         : token_(context::RuntimeContext::Attach(
               context::RuntimeContext::GetCurrent().SetValue(kSpanKey, span)))
     {}
   
   private:
     nostd::unique_ptr<context::Token> token_;
   };
   
   }  // namespace trace
   OPENTELEMETRY_END_NAMESPACE