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The C and C++ Include Header Files

/usr/include/nodejs/deps/v8/include/cppgc/sentinel-pointer.h


$ cat -n /usr/include/nodejs/deps/v8/include/cppgc/sentinel-pointer.h

     1	// Copyright 2021 the V8 project authors. All rights reserved.
     2	// Use of this source code is governed by a BSD-style license that can be
     3	// found in the LICENSE file.
     4	
     5	#ifndef INCLUDE_CPPGC_SENTINEL_POINTER_H_
     6	#define INCLUDE_CPPGC_SENTINEL_POINTER_H_
     7	
     8	#include <cstdint>
     9	
    10	namespace cppgc {
    11	namespace internal {
    12	
    13	// Special tag type used to denote some sentinel member. The semantics of the
    14	// sentinel is defined by the embedder.
    15	struct SentinelPointer {
    16	  template <typename T>
    17	  operator T*() const {
    18	    static constexpr intptr_t kSentinelValue = 1;
    19	    return reinterpret_cast<T*>(kSentinelValue);
    20	  }
    21	  // Hidden friends.
    22	  friend bool operator==(SentinelPointer, SentinelPointer) { return true; }
    23	  friend bool operator!=(SentinelPointer, SentinelPointer) { return false; }
    24	};
    25	
    26	}  // namespace internal
    27	
    28	constexpr internal::SentinelPointer kSentinelPointer;
    29	
    30	}  // namespace cppgc
    31	
    32	#endif  // INCLUDE_CPPGC_SENTINEL_POINTER_H_