iter-adapter-stl.hpp File Reference

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Description

Preconfigured adapters for some STL container standard usage situations.

Especially, definitions for accessing views on common STL containers repackaged as lumiera forward iterators. Mostly the purpose is ease of use, we don't create an abstraction barrier or try to hide implementation details. (see iter-source.hpp for such an abstraction facility). As a benefit, these adapters can be considered low overhead.

See also

iter-adapter-stl-test.cpp

iter-adapter.hpp

iter-source.happ

intertools.hpp

Definition in file iter-adapter-stl.hpp.

#include "lib/iter-adapter.hpp"
#include "lib/iter-adapter-ptr-deref.hpp"
#include <vector>

Classes
struct	_MapIterT< IT >
struct	_MapSubSelector< IT, SEL >
	helper to access the parts of the pair values correctly... More...
struct	_MapSubSelector< IT, SEL const & >
	especially for const iterators we need to use const& and const* More...
struct	_MapT< MAP >
struct	_MapTypeSelector< MAP >
struct	_MapTypeSelector< const MAP >
struct	_SeqT< SEQ >
struct	_SeqT< const SEQ >
class	DistinctIter< IT >
	Helper to filter repeated values from a wrapped iterator (both STL or Lumiera) More...
class	IterSnapshot< VAL >
	materialised iterator contents. More...
struct	Wrapped_Identity< IT >
	Wrapped-Iter-Policy: forwarding directly with typing retained unaltered. More...
struct	Wrapped_PickConstVal< IT >
struct	Wrapped_PickKey< IT >
	Wrapped-Iter-Policy: picking the key part of a pair iterator (map or multimap). More...
struct	Wrapped_PickVal< IT >
	Wrapped-Iter-Policy: picking the value part of a pair iterator (map or multimap). More...
struct	WrappedStlIter< DEF >
	helper baseclass to simplify defining customised wrapped STL iterators More...

Typedefs
template<class CON >
using	ContentSnapshot = IterSnapshot< typename CON::value_type >

Functions
template<class IT >
ContentSnapshot< IT >	dischargeToSnapshot (IT &ii)
	Take a snapshot of the given LumieraIterator, which is thereby consumed. More...
template<class CON >
_SeqT< CON >::Addrs	eachAddress (CON &coll)
template<class SEQ >
_SeqT< SEQ >::DistinctVals	eachDistinct (SEQ &seq)
	build a Lumiera Forward Iterator to suppress any repetitions in the given sequence.
template<class MAP >
_MapT< MAP >::DistinctKeys	eachDistinctKey (MAP &map)
template<class CON >
_SeqT< CON >::Range	eachElm (CON &coll)
template<class MAP >
_MapT< MAP >::KeyIter	eachKey (MAP &map)
template<class IT >
_MapIterT< IT >::KeyIter	eachKey (IT const &begin, IT const &end)
template<class MAP >
_MapT< MAP >::ValIter	eachVal (MAP &map)
template<class IT >
_MapIterT< IT >::ValIter	eachVal (IT const &begin, IT const &end)
template<class MMAP , typename KEY >
_MapT< MMAP >::ValIter	eachValForKey (MMAP &multimap, KEY key)
template<class CON >
ContentSnapshot< CON >	snapshot (CON const &con)
	Take a snapshot of the given STL compliant container. More...
template<class VAL >
iter_stl::IterSnapshot< VAL >	snapshot (std::initializer_list< VAL > const &&ili)
	Take a snapshot of the given std::initializer_list. More...

Namespaces
	lib
	Implementation namespace for support and library code.

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Class Documentation

lib::iter_stl::anonymous_namespace{iter-adapter-stl.hpp}::_MapIterT

struct lib::iter_stl::anonymous_namespace{iter-adapter-stl.hpp}::_MapIterT

Class Members
typedef IT	EntryIter
typedef first_type	KeyType
typedef second_type	ValType
typedef reference	DetectConst
typedef _MapSubSelector < EntryIter, DetectConst > ::PickKey	PickKeyIter
typedef _MapSubSelector < EntryIter, DetectConst > ::PickVal	PickValIter
typedef RangeIter< PickKeyIter >	KeyIter
typedef RangeIter< PickValIter >	ValIter
typedef DistinctIter< KeyIter >	DistinctKeys

Collaboration diagram for _MapIterT< IT >:

lib::iter_stl::anonymous_namespace{iter-adapter-stl.hpp}::_MapSubSelector

struct lib::iter_stl::anonymous_namespace{iter-adapter-stl.hpp}::_MapSubSelector

Class Members
typedef WrappedStlIter < Wrapped_PickKey< IT > >	PickKey
typedef WrappedStlIter < Wrapped_PickVal< IT > >	PickVal

Collaboration diagram for _MapSubSelector< IT, SEL >:

lib::iter_stl::anonymous_namespace{iter-adapter-stl.hpp}::_MapSubSelector< IT, SEL const & >

struct lib::iter_stl::anonymous_namespace{iter-adapter-stl.hpp}::_MapSubSelector< IT, SEL const & >

Class Members
typedef WrappedStlIter < Wrapped_PickKey< IT > >	PickKey
typedef WrappedStlIter < Wrapped_PickConstVal< IT > >	PickVal

Collaboration diagram for _MapSubSelector< IT, SEL const & >:

lib::iter_stl::anonymous_namespace{iter-adapter-stl.hpp}::_MapT

struct lib::iter_stl::anonymous_namespace{iter-adapter-stl.hpp}::_MapT

Class Members
typedef _MapTypeSelector< MAP > ::Key	KeyType
typedef _MapTypeSelector< MAP > ::Val	ValType
typedef _MapTypeSelector< MAP > ::Itr	EntryIter
typedef reference	DetectConst
typedef _MapSubSelector < EntryIter, DetectConst > ::PickKey	PickKeyIter
typedef _MapSubSelector < EntryIter, DetectConst > ::PickVal	PickValIter
typedef RangeIter< PickKeyIter >	KeyIter
typedef RangeIter< PickValIter >	ValIter
typedef DistinctIter< KeyIter >	DistinctKeys

Collaboration diagram for _MapT< MAP >:

lib::iter_stl::anonymous_namespace{iter-adapter-stl.hpp}::_MapTypeSelector

struct lib::iter_stl::anonymous_namespace{iter-adapter-stl.hpp}::_MapTypeSelector

Class Members
typedef first_type	Key
typedef second_type	Val
typedef iterator	Itr

Collaboration diagram for _MapTypeSelector< MAP >:

lib::iter_stl::anonymous_namespace{iter-adapter-stl.hpp}::_MapTypeSelector< const MAP >

struct lib::iter_stl::anonymous_namespace{iter-adapter-stl.hpp}::_MapTypeSelector< const MAP >

Class Members
typedef first_type	Key
typedef second_type const	Val
typedef const_iterator	Itr

Collaboration diagram for _MapTypeSelector< const MAP >:

lib::iter_stl::anonymous_namespace{iter-adapter-stl.hpp}::_SeqT

struct lib::iter_stl::anonymous_namespace{iter-adapter-stl.hpp}::_SeqT

Class Members
typedef iterator	Iter
typedef RangeIter< Iter >	Range
typedef DistinctIter< Range >	DistinctVals
typedef AddressExposingIter < Range >	Addrs

Collaboration diagram for _SeqT< SEQ >:

lib::iter_stl::anonymous_namespace{iter-adapter-stl.hpp}::_SeqT< const SEQ >

struct lib::iter_stl::anonymous_namespace{iter-adapter-stl.hpp}::_SeqT< const SEQ >

Class Members
typedef const_iterator	Iter
typedef RangeIter< Iter >	Range
typedef DistinctIter< Range >	DistinctVals
typedef AddressExposingIter < Range >	Addrs

Collaboration diagram for _SeqT< const SEQ >:

Function Documentation

eachElm()

_SeqT<CON>::Range lib::iter_stl::eachElm ( CON &  coll )

inline

Returns

Lumiera Forward Iterator to yield each Element from a STL container

Definition at line 285 of file iter-adapter-stl.hpp.

References lib::iter_stl::eachElm().

Referenced by lib::iter_stl::eachAddress(), and lib::iter_stl::eachElm().

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eachAddress()

_SeqT<CON>::Addrs lib::iter_stl::eachAddress ( CON &  coll )

inline

Returns

Lumiera Forward Iterator exposing the address of each Element within a STL

Definition at line 297 of file iter-adapter-stl.hpp.

References lib::iter_stl::eachAddress(), and lib::iter_stl::eachElm().

Referenced by lib::iter_stl::eachAddress().

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eachKey() [1/2]

_MapT<MAP>::KeyIter lib::iter_stl::eachKey ( MAP &  map )

inline

Returns

Lumiera Forward Iterator to yield each key of a map/multimap

Definition at line 309 of file iter-adapter-stl.hpp.

References lib::iter_stl::eachKey().

Referenced by lib::iter_stl::eachDistinctKey(), and lib::iter_stl::eachKey().

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eachKey() [2/2]

_MapIterT<IT>::KeyIter lib::iter_stl::eachKey ( IT const &  begin, IT const &  end  )

inline

Returns

Lumiera Forward Iterator extracting the keys from a given range of (key,value) pairs

Definition at line 323 of file iter-adapter-stl.hpp.

References lib::iter_stl::eachKey().

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eachVal() [1/2]

_MapT<MAP>::ValIter lib::iter_stl::eachVal ( MAP &  map )

inline

Returns

Lumiera Forward Iterator to yield each value within a map/multimap

Definition at line 337 of file iter-adapter-stl.hpp.

References lib::iter_stl::eachVal().

Referenced by lib::iter_stl::eachVal().

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eachVal() [2/2]

_MapIterT<IT>::ValIter lib::iter_stl::eachVal ( IT const &  begin, IT const &  end  )

inline

Returns

Lumiera Forward Iterator extracting the values from a given range of (key,value) pairs

Definition at line 351 of file iter-adapter-stl.hpp.

References lib::iter_stl::eachVal().

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eachDistinctKey()

_MapT<MAP>::DistinctKeys lib::iter_stl::eachDistinctKey ( MAP &  map )

inline

Returns

Lumiera Forward Iterator to yield the distinct keys from a multimap

Warning

full scan of all keys, dropping repetitions

Definition at line 380 of file iter-adapter-stl.hpp.

References lib::iter_stl::eachDistinctKey(), and lib::iter_stl::eachKey().

Referenced by lib::iter_stl::eachDistinctKey().

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eachValForKey()

_MapT<MMAP>::ValIter lib::iter_stl::eachValForKey ( MMAP &  multimap, KEY  key  )

inline

Returns

Lumiera Forward Iterator to yield the distinct keys from a multimap

Warning

full scan of all keys, dropping repetitions

Definition at line 392 of file iter-adapter-stl.hpp.

References lib::iter_stl::eachValForKey().

Referenced by lib::iter_stl::eachValForKey().

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snapshot() [1/2]

ContentSnapshot<CON> lib::iter_stl::snapshot ( CON const &  con )

inline

Take a snapshot of the given STL compliant container.

Returns

Lumiera Forward Iterator to yield each Element from this snapshot

Note

the snapshot is stored within a vector, i.e. heap allocated.

Warning

copying the returned iterator object copies the snapshot vector

Definition at line 569 of file iter-adapter-stl.hpp.

References lib::iter_stl::snapshot().

Referenced by lib::iter_stl::snapshot().

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dischargeToSnapshot()

ContentSnapshot<IT> lib::iter_stl::dischargeToSnapshot ( IT &  ii )

inline

Take a snapshot of the given LumieraIterator, which is thereby consumed.

Returns

Lumiera Forward Iterator to yield each Element from this snapshot

Definition at line 579 of file iter-adapter-stl.hpp.

References lib::iter_stl::dischargeToSnapshot().

Referenced by lib::iter_stl::dischargeToSnapshot().

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snapshot() [2/2]

iter_stl::IterSnapshot<VAL> lib::iter_stl::snapshot ( std::initializer_list< VAL > const &&  ili )

inline

Take a snapshot of the given std::initializer_list.

Returns

Lumiera Forward Iterator to yield each Element from this snapshot

Remarks

this can be a easy workaround for passing on a sequence of literal values defined inline in a brace expression; the typical implementation of brace initialiser lists allocates a temporary array on the stack. By using this helper, we copy the elements from this local array into a vector on the heap. Of course this isn't efficient, but it's convenient, e.g. for testing.

Definition at line 595 of file iter-adapter-stl.hpp.

References lib::iter_stl::snapshot().

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