///
/// Basically a <tt>std::map<std::string,boost::any></tt> plus
/// associated \ref ContentType.
- ///
- /// Constness protects non-empty values from being modified.
- /// It is possible to overwrite empty values or to add new ones.
///////////////////////////////////////////////////////////////////
class UserData
{
typedef std::map<std::string,boost::any> DataType;
- typedef DataType::size_type size_type;
- typedef DataType::key_type key_type;
- typedef DataType::value_type value_type;
- typedef DataType::const_iterator const_iterator;
public:
- /** Default ctor. */
+ /** Default ctor */
UserData()
{}
- /** Ctor taking ContentType. */
- explicit UserData( ContentType type_r )
- : _type( std::move(type_r) )
- {}
- /** Ctor taking ContentType. */
- explicit UserData( std::string type_r )
- : UserData( ContentType( std::move(type_r) ) )
- {}
- /** Ctor taking ContentType. */
- UserData( std::string type_r, std::string subtype_r )
- : UserData( ContentType( std::move(type_r), std::move(subtype_r) ) )
- {}
-
public:
- /** Get type. */
+ /** Get type */
const ContentType & type() const
{ return _type; }
- /** Set type. */
- void type( ContentType type_r )
- { _type = std::move(type_r); }
+ /** Set type */
+ void type( const ContentType & type_r )
+ { _type = type_r; }
public:
- /** Validate object in a boolean context: has data */
+ /** Validate object in a boolean context: has data */
explicit operator bool() const
- { return !empty(); }
-
- /** Whether \ref data is empty. */
- bool empty() const
- { return !_dataP || _dataP->empty(); }
-
- /** Size of \ref data. */
- size_type size() const
- { return _dataP ? _dataP->size() : 0; }
-
- /** The \ref data. */
- const DataType & data() const
- { return dataRef(); }
-
- /** Whether \a key_r is in \ref data. */
- bool haskey( const std::string & key_r ) const
- { return _dataP && _dataP->find( key_r ) != _dataP->end(); }
-
- /** Whether \a key_r is in \ref data and value is not empty. */
- bool hasvalue( const std::string & key_r ) const
- {
- bool ret = false;
- if ( _dataP )
- {
- const_iterator it = _dataP->find( key_r );
- if ( it != _dataP->end() && ! it->second.empty() )
- {
- ret = true;
- }
- }
- return ret;
- }
-
- /** Set the value for key (nonconst version always returns true).
- * Const version is allowed to set empty values or to add new ones only.
- */
- bool set( const std::string & key_r, boost::any val_r )
- { dataRef()[key_r] = std::move(val_r); return true; }
- /** \overload const version */
- bool set( const std::string & key_r, boost::any val_r ) const
- {
- bool ret = false;
- boost::any & val( dataRef()[key_r] );
- if ( val.empty() )
- {
- val = std::move(val_r);
- ret = true;
- }
- return ret;
- }
-
- /** Set an empty value for \a key_r (if possible). */
- bool reset( const std::string & key_r )
- { return set( key_r, boost::any() ); }
- /** \overload const version */
- bool reset( const std::string & key_r ) const
- { return set( key_r, boost::any() ); }
-
- /** Remove key from data.*/
- void erase( const std::string & key_r )
- { if ( _dataP ) _dataP->erase( key_r ); }
-
- /** Return the keys boost::any value or an empty value if key does not exist. */
- const boost::any & getvalue( const std::string & key_r ) const
- {
- if ( _dataP )
- {
- const_iterator it = _dataP->find( key_r );
- if ( it != _dataP->end() )
- {
- return it->second;
- }
- }
- static const boost::any none;
- return none;
- }
-
- /** Pass back a <tt>const Tp &</tt> reference to \a key_r value.
- * \throws boost::bad_any_cast if key is not set or value is not of appropriate type
- * \code
- * UserData data;
- * std::string value( "defaultvalue" );
- * try
- * {
- * value = data.get<std::string>( "mykey" );
- * }
- * catch ( const boost::bad_any_cast & )
- * {
- * // no "mykey" or not a std::sting
- * }
- * \endcode
- */
- template <class Tp>
- const Tp & get( const std::string & key_r ) const
- { return boost::any_cast<const Tp &>( getvalue( key_r ) ); }
-
- /** Pass back a \a Tp copy of \a key_r value.
- * \throws boost::bad_any_cast if key is not set or value is not of appropriate type
- * \code
- * UserData data;
- * std::string value = data.get<std::string>( "mykey", "defaultvalue" );
- * \endcode
- */
- template <class Tp>
- Tp get( const std::string & key_r, const Tp & default_r ) const
- { Tp ret( default_r ); get( key_r, ret ); return ret; }
-
- /** If the value for \a key_r is of the same type as \a ret_r, pass it back in \a ret_r and return \c true;.
- * \code
- * UserData data;
- * std::string value( "defaultvalue" );
- * if ( ! data.get<std::string>( "mykey", value )
- * {
- * // no "mykey" or not a std::sting
- * }
- * \endcode
- */
- template <class Tp>
- bool get( const std::string & key_r, Tp & ret_r ) const
- {
- bool ret = false;
- if ( _dataP )
- {
- const_iterator it = _dataP->find( key_r );
- if ( it != _dataP->end() )
- {
- auto ptr = boost::any_cast<const Tp>(&it->second);
- if ( ptr )
- {
- ret_r = *ptr;
- ret = true;
- }
- }
- }
- return ret;
- }
-
- private:
- DataType & dataRef() const
- { if ( ! _dataP ) _dataP.reset( new DataType ); return *_dataP; }
+ { return ! ( _dataP == nullptr || _dataP->empty() ); }
private:
- ContentType _type;
- mutable shared_ptr<DataType> _dataP;
+ ContentType _type;
+ shared_ptr<DataType> _dataP;
};
/** \relates UserData Stream output */
inline std::ostream & operator<<( std::ostream & str, const UserData & obj )
- { return str << "UserData(" << obj.type() << ":" << obj.size() << ")";}
+ { return str << "UserData(" << obj.type() << ")";}
} // namespace callback
///////////////////////////////////////////////////////////////////
projects / platform / upstream / libzypp.git / blobdiff