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📄 Any.h(5.05 KB)
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📄 BitVector.h(29.74 KB)
📄 Bitfields.h(11.65 KB)
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📄 CoalescingBitVector.h(14.91 KB)
📄 DAGDeltaAlgorithm.h(3.13 KB)
📄 DeltaAlgorithm.h(3.54 KB)
📄 DenseMap.h(43.14 KB)
📄 DenseMapInfo.h(11.4 KB)
📄 DenseSet.h(9.33 KB)
📄 DepthFirstIterator.h(10.37 KB)
📄 DirectedGraph.h(9.56 KB)
📄 EnumeratedArray.h(1.6 KB)
📄 EpochTracker.h(3.2 KB)
📄 EquivalenceClasses.h(10.52 KB)
📄 FloatingPointMode.h(5.62 KB)
📄 FoldingSet.h(30.16 KB)
📄 FunctionExtras.h(14.55 KB)
📄 GraphTraits.h(5.71 KB)
📄 Hashing.h(25.12 KB)
📄 ImmutableList.h(7.57 KB)
📄 ImmutableMap.h(10.84 KB)
📄 ImmutableSet.h(37.52 KB)
📄 IndexedMap.h(2.5 KB)
📄 IntEqClasses.h(2.87 KB)
📄 IntervalMap.h(72.88 KB)
📄 IntrusiveRefCntPtr.h(8.1 KB)
📄 MapVector.h(7.79 KB)
📄 None.h(983 B)
📄 Optional.h(10.82 KB)
📄 PackedVector.h(4.17 KB)
📄 PointerEmbeddedInt.h(4.05 KB)
📄 PointerIntPair.h(8.72 KB)
📄 PointerSumType.h(11.61 KB)
📄 PointerUnion.h(10.17 KB)
📄 PostOrderIterator.h(11.05 KB)
📄 PriorityQueue.h(2.69 KB)
📄 PriorityWorklist.h(8.11 KB)
📄 SCCIterator.h(8.02 KB)
📄 STLExtras.h(70.56 KB)
📄 ScopeExit.h(1.83 KB)
📄 ScopedHashTable.h(8.27 KB)
📄 Sequence.h(2.59 KB)
📄 SetOperations.h(2.58 KB)
📄 SetVector.h(9.39 KB)
📄 SmallBitVector.h(20.36 KB)
📄 SmallPtrSet.h(16.93 KB)
📄 SmallSet.h(8.37 KB)
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📄 SmallVector.h(32.33 KB)
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📄 SparseMultiSet.h(17.83 KB)
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📄 Statistic.h(7.01 KB)
📄 StringExtras.h(13.25 KB)
📄 StringMap.h(15.7 KB)
📄 StringMapEntry.h(4.83 KB)
📄 StringRef.h(31.68 KB)
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📄 Twine.h(17.48 KB)
📄 TypeSwitch.h(5.82 KB)
📄 UniqueVector.h(3.09 KB)
📄 Waymarking.h(11.96 KB)
📄 bit.h(2.26 KB)
📄 edit_distance.h(3.57 KB)
📄 fallible_iterator.h(8.31 KB)
📄 ilist.h(13.68 KB)
📄 ilist_base.h(2.72 KB)
📄 ilist_iterator.h(7.21 KB)
📄 ilist_node.h(9.84 KB)
📄 ilist_node_base.h(1.7 KB)
📄 ilist_node_options.h(5.07 KB)
📄 iterator.h(13.46 KB)
📄 iterator_range.h(2.22 KB)
📄 simple_ilist.h(10.78 KB)

Editing: ilist_node.h

//===- llvm/ADT/ilist_node.h - Intrusive Linked List Helper -----*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines the ilist_node class template, which is a convenient
// base class for creating classes that can be used with ilists.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_ADT_ILIST_NODE_H
#define LLVM_ADT_ILIST_NODE_H

#include "llvm/ADT/ilist_node_base.h"
#include "llvm/ADT/ilist_node_options.h"

namespace llvm {

namespace ilist_detail {

struct NodeAccess;

} // end namespace ilist_detail

template <class OptionsT, bool IsReverse, bool IsConst> class ilist_iterator;
template <class OptionsT> class ilist_sentinel;

/// Implementation for an ilist node.
///
/// Templated on an appropriate \a ilist_detail::node_options, usually computed
/// by \a ilist_detail::compute_node_options.
///
/// This is a wrapper around \a ilist_node_base whose main purpose is to
/// provide type safety: you can't insert nodes of \a ilist_node_impl into the
/// wrong \a simple_ilist or \a iplist.
template <class OptionsT> class ilist_node_impl : OptionsT::node_base_type {
  using value_type = typename OptionsT::value_type;
  using node_base_type = typename OptionsT::node_base_type;
  using list_base_type = typename OptionsT::list_base_type;

friend typename OptionsT::list_base_type;
  friend struct ilist_detail::NodeAccess;
  friend class ilist_sentinel<OptionsT>;
  friend class ilist_iterator<OptionsT, false, false>;
  friend class ilist_iterator<OptionsT, false, true>;
  friend class ilist_iterator<OptionsT, true, false>;
  friend class ilist_iterator<OptionsT, true, true>;

protected:
  using self_iterator = ilist_iterator<OptionsT, false, false>;
  using const_self_iterator = ilist_iterator<OptionsT, false, true>;
  using reverse_self_iterator = ilist_iterator<OptionsT, true, false>;
  using const_reverse_self_iterator = ilist_iterator<OptionsT, true, true>;

ilist_node_impl() = default;

private:
  ilist_node_impl *getPrev() {
    return static_cast<ilist_node_impl *>(node_base_type::getPrev());
  }

ilist_node_impl *getNext() {
    return static_cast<ilist_node_impl *>(node_base_type::getNext());
  }

const ilist_node_impl *getPrev() const {
    return static_cast<ilist_node_impl *>(node_base_type::getPrev());
  }

const ilist_node_impl *getNext() const {
    return static_cast<ilist_node_impl *>(node_base_type::getNext());
  }

void setPrev(ilist_node_impl *N) { node_base_type::setPrev(N); }
  void setNext(ilist_node_impl *N) { node_base_type::setNext(N); }

public:
  self_iterator getIterator() { return self_iterator(*this); }
  const_self_iterator getIterator() const { return const_self_iterator(*this); }

reverse_self_iterator getReverseIterator() {
    return reverse_self_iterator(*this);
  }

const_reverse_self_iterator getReverseIterator() const {
    return const_reverse_self_iterator(*this);
  }

// Under-approximation, but always available for assertions.
  using node_base_type::isKnownSentinel;

/// Check whether this is the sentinel node.
  ///
  /// This requires sentinel tracking to be explicitly enabled.  Use the
  /// ilist_sentinel_tracking<true> option to get this API.
  bool isSentinel() const {
    static_assert(OptionsT::is_sentinel_tracking_explicit,
                  "Use ilist_sentinel_tracking<true> to enable isSentinel()");
    return node_base_type::isSentinel();
  }
};

/// An intrusive list node.
///
/// A base class to enable membership in intrusive lists, including \a
/// simple_ilist, \a iplist, and \a ilist.  The first template parameter is the
/// \a value_type for the list.
///
/// An ilist node can be configured with compile-time options to change
/// behaviour and/or add API.
///
/// By default, an \a ilist_node knows whether it is the list sentinel (an
/// instance of \a ilist_sentinel) if and only if
/// LLVM_ENABLE_ABI_BREAKING_CHECKS.  The function \a isKnownSentinel() always
/// returns \c false tracking is off.  Sentinel tracking steals a bit from the
/// "prev" link, which adds a mask operation when decrementing an iterator, but
/// enables bug-finding assertions in \a ilist_iterator.
///
/// To turn sentinel tracking on all the time, pass in the
/// ilist_sentinel_tracking<true> template parameter.  This also enables the \a
/// isSentinel() function.  The same option must be passed to the intrusive
/// list.  (ilist_sentinel_tracking<false> turns sentinel tracking off all the
/// time.)
///
/// A type can inherit from ilist_node multiple times by passing in different
/// \a ilist_tag options.  This allows a single instance to be inserted into
/// multiple lists simultaneously, where each list is given the same tag.
///
/// \example
/// struct A {};
/// struct B {};
/// struct N : ilist_node<N, ilist_tag<A>>, ilist_node<N, ilist_tag<B>> {};
///
/// void foo() {
///   simple_ilist<N, ilist_tag<A>> ListA;
///   simple_ilist<N, ilist_tag<B>> ListB;
///   N N1;
///   ListA.push_back(N1);
///   ListB.push_back(N1);
/// }
/// \endexample
///
/// See \a is_valid_option for steps on adding a new option.
template <class T, class... Options>
class ilist_node
    : public ilist_node_impl<
          typename ilist_detail::compute_node_options<T, Options...>::type> {
  static_assert(ilist_detail::check_options<Options...>::value,
                "Unrecognized node option!");
};

namespace ilist_detail {

/// An access class for ilist_node private API.
///
/// This gives access to the private parts of ilist nodes.  Nodes for an ilist
/// should friend this class if they inherit privately from ilist_node.
///
/// Using this class outside of the ilist implementation is unsupported.
struct NodeAccess {
protected:
  template <class OptionsT>
  static ilist_node_impl<OptionsT> *getNodePtr(typename OptionsT::pointer N) {
    return N;
  }

template <class OptionsT>
  static const ilist_node_impl<OptionsT> *
  getNodePtr(typename OptionsT::const_pointer N) {
    return N;
  }

template <class OptionsT>
  static typename OptionsT::pointer getValuePtr(ilist_node_impl<OptionsT> *N) {
    return static_cast<typename OptionsT::pointer>(N);
  }

template <class OptionsT>
  static typename OptionsT::const_pointer
  getValuePtr(const ilist_node_impl<OptionsT> *N) {
    return static_cast<typename OptionsT::const_pointer>(N);
  }

template <class OptionsT>
  static ilist_node_impl<OptionsT> *getPrev(ilist_node_impl<OptionsT> &N) {
    return N.getPrev();
  }

template <class OptionsT>
  static ilist_node_impl<OptionsT> *getNext(ilist_node_impl<OptionsT> &N) {
    return N.getNext();
  }

template <class OptionsT>
  static const ilist_node_impl<OptionsT> *
  getPrev(const ilist_node_impl<OptionsT> &N) {
    return N.getPrev();
  }

template <class OptionsT>
  static const ilist_node_impl<OptionsT> *
  getNext(const ilist_node_impl<OptionsT> &N) {
    return N.getNext();
  }
};

template <class OptionsT> struct SpecificNodeAccess : NodeAccess {
protected:
  using pointer = typename OptionsT::pointer;
  using const_pointer = typename OptionsT::const_pointer;
  using node_type = ilist_node_impl<OptionsT>;

static node_type *getNodePtr(pointer N) {
    return NodeAccess::getNodePtr<OptionsT>(N);
  }

static const node_type *getNodePtr(const_pointer N) {
    return NodeAccess::getNodePtr<OptionsT>(N);
  }

static pointer getValuePtr(node_type *N) {
    return NodeAccess::getValuePtr<OptionsT>(N);
  }

static const_pointer getValuePtr(const node_type *N) {
    return NodeAccess::getValuePtr<OptionsT>(N);
  }
};

} // end namespace ilist_detail

template <class OptionsT>
class ilist_sentinel : public ilist_node_impl<OptionsT> {
public:
  ilist_sentinel() {
    this->initializeSentinel();
    reset();
  }

void reset() {
    this->setPrev(this);
    this->setNext(this);
  }

bool empty() const { return this == this->getPrev(); }
};

/// An ilist node that can access its parent list.
///
/// Requires \c NodeTy to have \a getParent() to find the parent node, and the
/// \c ParentTy to have \a getSublistAccess() to get a reference to the list.
template <typename NodeTy, typename ParentTy, class... Options>
class ilist_node_with_parent : public ilist_node<NodeTy, Options...> {
protected:
  ilist_node_with_parent() = default;

private:
  /// Forward to NodeTy::getParent().
  ///
  /// Note: do not use the name "getParent()".  We want a compile error
  /// (instead of recursion) when the subclass fails to implement \a
  /// getParent().
  const ParentTy *getNodeParent() const {
    return static_cast<const NodeTy *>(this)->getParent();
  }

public:
  /// @name Adjacent Node Accessors
  /// @{
  /// Get the previous node, or \c nullptr for the list head.
  NodeTy *getPrevNode() {
    // Should be separated to a reused function, but then we couldn't use auto
    // (and would need the type of the list).
    const auto &List =
        getNodeParent()->*(ParentTy::getSublistAccess((NodeTy *)nullptr));
    return List.getPrevNode(*static_cast<NodeTy *>(this));
  }

/// Get the previous node, or \c nullptr for the list head.
  const NodeTy *getPrevNode() const {
    return const_cast<ilist_node_with_parent *>(this)->getPrevNode();
  }

/// Get the next node, or \c nullptr for the list tail.
  NodeTy *getNextNode() {
    // Should be separated to a reused function, but then we couldn't use auto
    // (and would need the type of the list).
    const auto &List =
        getNodeParent()->*(ParentTy::getSublistAccess((NodeTy *)nullptr));
    return List.getNextNode(*static_cast<NodeTy *>(this));
  }

/// Get the next node, or \c nullptr for the list tail.
  const NodeTy *getNextNode() const {
    return const_cast<ilist_node_with_parent *>(this)->getNextNode();
  }
  /// @}
};

} // end namespace llvm

#endif // LLVM_ADT_ILIST_NODE_H

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