abg-traverse.cc

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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// -*- Mode: C++ -*-
//
// Copyright (C) 2013-2026 Red Hat, Inc.
 
/// @file
 
#include <atomic>
 
#include "abg-internal.h"
// <headers defining libabigail's API go under here>
ABG_BEGIN_EXPORT_DECLARATIONS
 
#include "abg-traverse.h"
 
ABG_END_EXPORT_DECLARATIONS
// </headers defining libabigail's API>
 
namespace abigail
{
 
namespace ir
{
 
/// Private data type of the @ref traversable_base type.
struct traversable_base::priv
{
  std::atomic<bool> visiting_;
 
  priv(bool visiting = false)
    : visiting_(visiting)
  {}
}; // end struct traversable_base::priv
 
/// Default constructor of the @ref traversable_base type.
traversable_base::traversable_base()
  :priv_(new priv)
{}
 
/// Destructor of the @ref traversable_base type.
traversable_base::~traversable_base()
{}
 
/// This should returns false before and after the node has been
/// visiting.  During the visiting of the node (and of its children)
/// this should return true.
///
/// @return true if the current node is being visited.
bool
traversable_base::visiting() const
{return priv_->visiting_;}
 
/// The traversing code should be responsible of calling this, not
/// the user code.
///
/// This is the setter of the "visiting" flag of the node being
/// visited.  If set to yes, it means the node is being visited.
/// False means either the node has not yet been visited, or it
/// has already been visited.
///
/// @param f the new value of the "visiting" flag.
void
traversable_base::visiting(bool f)
{priv_->visiting_.store(f);}
 
}// end namaspace ir
}// end namespace abigail