libzypp  17.16.0
Capabilities.h
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12 #ifndef ZYPP_SAT_CAPABILITIES_H
13 #define ZYPP_SAT_CAPABILITIES_H
14 
15 #include <iosfwd>
16 
19 #include "zypp/Capability.h"
20 
22 namespace zypp
23 {
24 
26  //
27  // CLASS NAME : Capabilities
28  //
36  {
37  public:
39  typedef unsigned size_type;
40 
42 
43  public:
46  : _begin( 0 )
47  {}
48 
50  explicit
52  : _begin( base_r )
53  {}
54 
58  Capabilities( const sat::detail::IdType * base_r, sat::detail::IdType skip_r );
59 
60  public:
62  bool empty() const
63  { return ! ( _begin && *_begin ); }
64 
66  size_type size() const;
67 
68  public:
69  class const_iterator;
70 
72  const_iterator begin() const;
73 
75  const_iterator end() const;
76 
77  public:
79  bool matches( const Capability & lhs ) const;
80 
81  private:
83  };
85 
87  std::ostream & operator<<( std::ostream & str, const Capabilities & obj );
88 
90  //
91  // CLASS NAME : Capabilities::const_iterator
92  //
95  class Capabilities::const_iterator : public boost::iterator_adaptor<
96  const_iterator // Derived
97  , const sat::detail::IdType * // Base
98  , const Capability // Value
99  , boost::forward_traversal_tag // CategoryOrTraversal
100  , const Capability // Reference
101  >
102  {
103  public:
105  : const_iterator::iterator_adaptor_( 0 )
106  {}
107 
108  explicit const_iterator( const sat::detail::IdType * _idx )
109  : const_iterator::iterator_adaptor_( _idx )
110  {
111  if ( base_reference() && sat::detail::isDepMarkerId( *base_reference() ) )
112  {
113  _tagged = true;
114  ++base_reference();
115  }
116  }
117 
118  public:
136  bool tagged() const { return _tagged; }
137 
138  private:
140 
141  reference dereference() const
142  { return ( base() ) ? Capability( *base() ) : Capability::Null; }
143 
144  template <class OtherDerived, class OtherIterator, class V, class C, class R, class D>
145  bool equal( const boost::iterator_adaptor<OtherDerived, OtherIterator, V, C, R, D> & rhs ) const
146  { // NULL pointer is eqal pointer to Id 0
147  return ( base() == rhs.base() // includes both NULL...
148  || ( !rhs.base() && !*base() )
149  || ( !base() && !*rhs.base() ) );
150  }
151 
152  void increment()
153  { // jump over libsolvs internal ids.
154  if ( sat::detail::isDepMarkerId( *(++base_reference()) ) )
155  {
156  _tagged = true;
157  ++base_reference();
158  }
159  }
160 
161  private:
163  };
165 
167  { return const_iterator( _begin ); }
168 
170  { return const_iterator( 0 ); }
171 
172  inline bool Capabilities::matches( const Capability & lhs ) const
173  {
174  for ( const Capability & rhs : *this )
175  if ( lhs.matches( rhs ) == CapMatch::yes )
176  return true;
177  return false;
178  }
180 } // namespace zypp
182 #endif // ZYPP_SAT_CAPABILITIES_H
Capabilities(const sat::detail::IdType *base_r)
Ctor from Id pointer (friend Solvable).
Definition: Capabilities.h:51
int IdType
Generic Id type.
Definition: PoolMember.h:104
Container of Capability (currently read only).
Definition: Capabilities.h:35
const_iterator end() const
Iterator pointing behind the last Capability.
Definition: Capabilities.h:169
String related utilities and Regular expression matching.
const_iterator(const sat::detail::IdType *_idx)
Definition: Capabilities.h:108
size_type size() const
Number of capabilities inside.
Definition: Capabilities.cc:45
const_iterator begin() const
Iterator pointing to the first Capability.
Definition: Capabilities.h:166
Capability value_type
Definition: Capabilities.h:38
std::ostream & operator<<(std::ostream &str, const Exception &obj)
Definition: Exception.cc:147
Capabilities()
Default ctor.
Definition: Capabilities.h:45
static const Capability Null
No or Null Capability ( Id 0 ).
Definition: Capability.h:137
bool isDepMarkerId(IdType id_r)
Test for internal ids satlib includes in dependencies.
Definition: PoolMember.h:119
bool equal(const boost::iterator_adaptor< OtherDerived, OtherIterator, V, C, R, D > &rhs) const
Definition: Capabilities.h:145
bool tagged() const
Return true if the Capability is tagged.
Definition: Capabilities.h:136
const sat::detail::IdType * _begin
Definition: Capabilities.h:82
A sat capability.
Definition: Capability.h:59
Capabilities iterator.
Definition: Capabilities.h:95
friend class boost::iterator_core_access
Definition: Capabilities.h:139
static const CapMatch yes
Definition: CapMatch.h:51
Easy-to use interface to the ZYPP dependency resolver.
Definition: CodePitfalls.doc:1
bool matches(const Capability &lhs) const
Return whether lhs matches at least one capability in set.
Definition: Capabilities.h:172
bool empty() const
Whether the container is empty.
Definition: Capabilities.h:62
static CapMatch matches(const Capability &lhs, const Capability &rhs)
Definition: Capability.h:176
DefaultIntegral< bool, false > _tagged
Definition: Capabilities.h:162