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Make intrusive_list_node's next/prev private

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Tromey noticed that intrusive_list_node leaves its data members
public, which seems sub-optimal.

This commit makes intrusive_list_node's data fields private.
intrusive_list_iterator, intrusive_list_reverse_iterator, and
intrusive_list do need to access the fields, so they are made friends.

Change-Id: Ia8b306b40344cc218d423c8dfb8355207a612ac5
This commit is contained in:
Pedro Alves 2022-04-08 20:03:46 +01:00
parent d095eb4e87
commit 50b032ebc0
1 changed files with 12 additions and 1 deletions
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13
gdbsupport/intrusive_list.h
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@ -24,15 +24,26 @@
/* A list node. The elements put in an intrusive_list either inherit
from this, or have a field of this type. */
template<typename T>
struct intrusive_list_node
class intrusive_list_node
{
public:
bool is_linked () const
{
return next != INTRUSIVE_LIST_UNLINKED_VALUE;
}
private:
T *next = INTRUSIVE_LIST_UNLINKED_VALUE;
T *prev = INTRUSIVE_LIST_UNLINKED_VALUE;
template<typename T2, typename AsNode>
friend struct intrusive_list_iterator;
template<typename T2, typename AsNode>
friend struct intrusive_list_reverse_iterator;
template<typename T2, typename AsNode>
friend struct intrusive_list;
};
/* Follows a couple types used by intrusive_list as template parameter to find