libzypp  17.35.14
SolverQueueItem.h
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2 /* QueueItem.h
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20 
21 #ifndef ZYPP_SOLVER_DETAIL_QUEUEITEM_H
22 #define ZYPP_SOLVER_DETAIL_QUEUEITEM_H
23 #ifndef ZYPP_USE_RESOLVER_INTERNALS
24 #error Do not directly include this file!
25 #else
26 
27 #include <iosfwd>
28 #include <list>
29 #include <string>
30 
31 #include <zypp/Globals.h>
33 #include <zypp/base/NonCopyable.h>
34 #include <zypp/base/PtrTypes.h>
35 #include <zypp/ResPool.h>
36 
38 namespace zypp
39 {
40  namespace solver
42  {
43  namespace detail
45  {
46 
48 
49 DEFINE_PTR_TYPE(SolverQueueItemUpdate);
50 DEFINE_PTR_TYPE(SolverQueueItemDelete);
51 DEFINE_PTR_TYPE(SolverQueueItemInstall);
52 DEFINE_PTR_TYPE(SolverQueueItemInstallOneOf);
53 DEFINE_PTR_TYPE(SolverQueueItemLock);
54 
55 
56 typedef enum {
57  QUEUE_ITEM_TYPE_UNKNOWN = 0,
58  QUEUE_ITEM_TYPE_UPDATE,
59  QUEUE_ITEM_TYPE_INSTALL,
60  QUEUE_ITEM_TYPE_DELETE,
61  QUEUE_ITEM_TYPE_INSTALL_ONE_OF,
62  QUEUE_ITEM_TYPE_LOCK
63 } SolverQueueItemType;
64 
65 
66 typedef std::list<SolverQueueItem_Ptr> SolverQueueItemList;
67 
68 #define CMP(a,b) (((a) < (b)) - ((b) < (a)))
69 
71 //
72 // CLASS NAME : SolverQueueItem
73 
74 class SolverQueueItem : public base::ReferenceCounted, private base::NonCopyable {
75 
76  private:
77 
78  SolverQueueItemType _type;
79  ResPool _pool;
80 
81  protected:
82 
83  SolverQueueItem (SolverQueueItemType type, ResPool pool);
84 
85  public:
86 
87  virtual ~SolverQueueItem();
88 
89  // ---------------------------------- I/O
90 
91  virtual std::ostream & dumpOn( std::ostream & str ) const;
92 
93  friend std::ostream& operator<<(std::ostream & str, const SolverQueueItem & obj)
94  { return obj.dumpOn (str); }
95  friend std::ostream& operator<<(std::ostream & str, const SolverQueueItemList & itemlist);
96 
97  // ---------------------------------- accessors
98 
99  ResPool pool (void) const { return _pool; }
100 
101  // ---------------------------------- methods
102 
103  void copy (const SolverQueueItem *from);
104 
105  bool isDelete (void) const { return _type == QUEUE_ITEM_TYPE_DELETE; }
106  bool isInstall (void) const { return _type == QUEUE_ITEM_TYPE_INSTALL; }
107  bool isUpdate (void) const { return _type == QUEUE_ITEM_TYPE_UPDATE; }
108  bool isLock (void) const { return _type == QUEUE_ITEM_TYPE_LOCK; }
109  bool isInstallOneOf (void) const { return _type == QUEUE_ITEM_TYPE_INSTALL_ONE_OF; }
110 
111 
112  virtual SolverQueueItem_Ptr copy (void) const = 0;
113  virtual bool addRule (sat::detail::CQueue & q) =0 ;
114  virtual int cmp (SolverQueueItem_constPtr item) const = 0;
115  int compare (SolverQueueItem_constPtr item) const { return CMP(_type, item->_type); }
116 
117 };
118 
120  };// namespace detail
123  };// namespace solver
126 };// namespace zypp
128 #endif // ZYPP_USE_RESOLVER_INTERNALS
129 #endif // ZYPP_SOLVER_DETAIL_QUEUEITEM_H
String related utilities and Regular expression matching.
DEFINE_PTR_TYPE(HelixResolvable)
std::ostream & operator<<(std::ostream &str, const SolutionActionList &actionlist)
std::ostream & dumpOn(std::ostream &str, const Capability &obj)
Definition: Capability.cc:580
std::list< SolverQueueItem_Ptr > SolverQueueItemList
Definition: Types.h:45
std::ostream & copy(std::istream &from_r, std::ostream &to_r)
Copy istream to ostream.
Definition: IOStream.h:51
::s_Queue CQueue
Wrapped libsolv C data type exposed as backdoor.
Definition: PoolMember.h:62
Easy-to use interface to the ZYPP dependency resolver.
Definition: Application.cc:19
boost::noncopyable NonCopyable
Ensure derived classes cannot be copied.
Definition: NonCopyable.h:26