1 // Boost.Assign library
3 // Copyright Thorsten Ottosen 2003-2004. Use, modification and
4 // distribution is subject to the Boost Software License, Version
5 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
6 // http://www.boost.org/LICENSE_1_0.txt)
8 // For more information, see http://www.boost.org/libs/assign/
12 #ifndef BOOST_ASSIGN_LIST_OF_HPP
13 #define BOOST_ASSIGN_LIST_OF_HPP
19 #include <boost/assign/assignment_exception.hpp>
20 #include <boost/range/iterator_range.hpp>
21 #include <boost/config.hpp>
22 #include <boost/tuple/tuple.hpp>
23 #include <boost/type_traits/remove_const.hpp>
24 #include <boost/type_traits/remove_reference.hpp>
25 #include <boost/type_traits/is_reference.hpp>
26 #include <boost/static_assert.hpp>
27 #include <boost/type_traits/detail/yes_no_type.hpp>
28 #include <boost/type_traits/decay.hpp>
29 #include <boost/type_traits/is_array.hpp>
30 #include <boost/mpl/if.hpp>
35 #include <boost/preprocessor/repetition/enum_binary_params.hpp>
36 #include <boost/preprocessor/repetition/enum_params.hpp>
37 #include <boost/preprocessor/iteration/local.hpp>
39 #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
40 // BCB requires full type definition for is_array<> to work correctly.
41 #include <boost/array.hpp>
47 // this here is necessary to avoid compiler error in <boost/array.hpp>
48 #if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
49 template< class T, std::size_t sz >
53 namespace assign_detail
55 /////////////////////////////////////////////////////////////////////////
56 // Part 0: common conversion code
57 /////////////////////////////////////////////////////////////////////////
63 // Add constness to array parameters
64 // to support string literals properly
66 typedef BOOST_DEDUCED_TYPENAME mpl::eval_if<
68 ::boost::decay<const T>,
69 ::boost::decay<T> >::type type;
72 template< class T, std::size_t sz >
73 type_traits::yes_type assign_is_array( const array<T,sz>* );
74 type_traits::no_type assign_is_array( ... );
75 template< class T, class U >
76 type_traits::yes_type assign_is_pair( const std::pair<T,U>* );
77 type_traits::no_type assign_is_pair( ... );
83 #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
85 char dummy_; // BCB would by default use 8 bytes
88 struct adapter_type_tag
90 #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
92 char dummy_; // BCB would by default use 8 bytes
97 #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
99 char dummy_; // BCB would by default use 8 bytes
102 struct default_type_tag
104 #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
106 char dummy_; // BCB would by default use 8 bytes
112 template< class DerivedTAssign, class Iterator >
115 public: // Range operations
116 typedef Iterator iterator;
117 typedef Iterator const_iterator;
119 iterator begin() const
121 return static_cast<const DerivedTAssign*>(this)->begin();
126 return static_cast<const DerivedTAssign*>(this)->end();
131 template< class Container >
132 Container convert_to_container() const
134 static Container* c = 0;
135 BOOST_STATIC_CONSTANT( bool, is_array_flag = sizeof( assign_detail::assign_is_array( c ) )
136 == sizeof( type_traits::yes_type ) );
138 typedef BOOST_DEDUCED_TYPENAME mpl::if_c< is_array_flag,
140 default_type_tag >::type tag_type;
142 return convert<Container>( c, tag_type() );
147 template< class Container >
148 Container convert( const Container*, default_type_tag ) const
151 #if BOOST_WORKAROUND(BOOST_DINKUMWARE_STDLIB, == 1)
152 // old Dinkumware doesn't support iterator type as template
154 iterator it = begin(),
158 result.insert( result.end(), *it );
163 return Container( begin(), end() );
167 template< class Array >
168 Array convert( const Array*, array_type_tag ) const
170 typedef BOOST_DEDUCED_TYPENAME Array::value_type value_type;
172 #if BOOST_WORKAROUND(BOOST_INTEL, <= 910 ) || BOOST_WORKAROUND(__SUNPRO_CC, <= 0x580 )
173 BOOST_DEDUCED_TYPENAME remove_const<Array>::type ar;
177 const std::size_t sz = ar.size();
178 if( sz < static_cast<const DerivedTAssign*>(this)->size() )
179 throw assign::assignment_exception( "array initialized with too many elements" );
181 iterator i = begin(),
183 for( ; i != e; ++i, ++n )
186 ar[n] = value_type();
190 template< class Adapter >
191 Adapter convert_to_adapter( const Adapter* = 0 ) const
194 iterator i = begin(),
202 struct adapter_converter;
203 friend struct adapter_converter;
205 struct adapter_converter
208 adapter_converter( const converter& this_ ) : gl( this_ )
211 adapter_converter( const adapter_converter& r )
215 template< class Adapter >
216 operator Adapter() const
218 return gl.convert_to_adapter<Adapter>();
223 template< class Container >
224 Container to_container( Container& c ) const
226 return convert( &c, default_type_tag() );
229 adapter_converter to_adapter() const
231 return adapter_converter( *this );
234 template< class Adapter >
235 Adapter to_adapter( Adapter& a ) const
237 return this->convert_to_adapter( &a );
240 template< class Array >
241 Array to_array( Array& a ) const
243 return convert( &a, array_type_tag() );
247 template< class T, class I, class Range >
248 inline bool operator==( const converter<T,I>& l, const Range& r )
250 return ::boost::iterator_range_detail::equal( l, r );
253 template< class T, class I, class Range >
254 inline bool operator==( const Range& l, const converter<T,I>& r )
259 template< class T, class I, class Range >
260 inline bool operator!=( const converter<T,I>& l, const Range& r )
265 template< class T, class I, class Range >
266 inline bool operator!=( const Range& l, const converter<T,I>& r )
271 template< class T, class I, class Range >
272 inline bool operator<( const converter<T,I>& l, const Range& r )
274 return ::boost::iterator_range_detail::less_than( l, r );
277 template< class T, class I, class Range >
278 inline bool operator<( const Range& l, const converter<T,I>& r )
280 return ::boost::iterator_range_detail::less_than( l, r );
283 template< class T, class I, class Range >
284 inline bool operator>( const converter<T,I>& l, const Range& r )
289 template< class T, class I, class Range >
290 inline bool operator>( const Range& l, const converter<T,I>& r )
295 template< class T, class I, class Range >
296 inline bool operator<=( const converter<T,I>& l, const Range& r )
301 template< class T, class I, class Range >
302 inline bool operator<=( const Range& l, const converter<T,I>& r )
307 template< class T, class I, class Range >
308 inline bool operator>=( const converter<T,I>& l, const Range& r )
313 template< class T, class I, class Range >
314 inline bool operator>=( const Range& l, const converter<T,I>& r )
319 template< class T, class I, class Elem, class Traits >
320 inline std::basic_ostream<Elem,Traits>&
321 operator<<( std::basic_ostream<Elem, Traits>& Os,
322 const converter<T,I>& r )
324 return Os << ::boost::make_iterator_range( r.begin(), r.end() );
327 /////////////////////////////////////////////////////////////////////////
328 // Part 1: flexible, but inefficient interface
329 /////////////////////////////////////////////////////////////////////////
333 public converter< generic_list< BOOST_DEDUCED_TYPENAME assign_decay<T>::type >,
334 BOOST_DEDUCED_TYPENAME std::deque<BOOST_DEDUCED_TYPENAME
335 assign_decay<T>::type>::iterator >
337 typedef BOOST_DEDUCED_TYPENAME assign_decay<T>::type Ty;
338 typedef std::deque<Ty> impl_type;
339 mutable impl_type values_;
342 typedef BOOST_DEDUCED_TYPENAME impl_type::iterator iterator;
343 typedef iterator const_iterator;
344 typedef BOOST_DEDUCED_TYPENAME impl_type::value_type value_type;
345 typedef BOOST_DEDUCED_TYPENAME impl_type::size_type size_type;
346 typedef BOOST_DEDUCED_TYPENAME impl_type::difference_type difference_type;
349 iterator begin() const { return values_.begin(); }
350 iterator end() const { return values_.end(); }
351 bool empty() const { return values_.empty(); }
352 size_type size() const { return values_.size(); }
355 void push_back( value_type r ) { values_.push_back( r ); }
358 generic_list& operator,( const Ty& u )
360 this->push_back( u );
364 generic_list& operator()()
366 this->push_back( Ty() );
370 generic_list& operator()( const Ty& u )
372 this->push_back( u );
377 #ifndef BOOST_ASSIGN_MAX_PARAMS // use user's value
378 #define BOOST_ASSIGN_MAX_PARAMS 5
380 #define BOOST_ASSIGN_MAX_PARAMETERS (BOOST_ASSIGN_MAX_PARAMS - 1)
381 #define BOOST_ASSIGN_PARAMS1(n) BOOST_PP_ENUM_PARAMS(n, class U)
382 #define BOOST_ASSIGN_PARAMS2(n) BOOST_PP_ENUM_BINARY_PARAMS(n, U, const& u)
383 #define BOOST_ASSIGN_PARAMS3(n) BOOST_PP_ENUM_PARAMS(n, u)
384 #define BOOST_ASSIGN_PARAMS4(n) BOOST_PP_ENUM_PARAMS(n, U)
385 #define BOOST_ASSIGN_PARAMS2_NO_REF(n) BOOST_PP_ENUM_BINARY_PARAMS(n, U, u)
387 #define BOOST_PP_LOCAL_LIMITS (1, BOOST_ASSIGN_MAX_PARAMETERS)
388 #define BOOST_PP_LOCAL_MACRO(n) \
389 template< class U, BOOST_ASSIGN_PARAMS1(n) > \
390 generic_list& operator()(U const& u, BOOST_ASSIGN_PARAMS2(n) ) \
392 this->push_back( Ty(u, BOOST_ASSIGN_PARAMS3(n))); \
397 #include BOOST_PP_LOCAL_ITERATE()
401 generic_list& repeat( std::size_t sz, U u )
405 this->push_back( u );
409 template< class Nullary_function >
410 generic_list& repeat_fun( std::size_t sz, Nullary_function fun )
414 this->push_back( fun() );
418 template< class SinglePassIterator >
419 generic_list& range( SinglePassIterator first,
420 SinglePassIterator last )
422 for( ; first != last; ++first )
423 this->push_back( *first );
427 template< class SinglePassRange >
428 generic_list& range( const SinglePassRange& r )
430 return range( boost::begin(r), boost::end(r) );
433 template< class Container >
434 operator Container() const
436 return this-> BOOST_NESTED_TEMPLATE convert_to_container<Container>();
440 /////////////////////////////////////////////////////////////////////////
441 // Part 2: efficient, but inconvenient interface
442 /////////////////////////////////////////////////////////////////////////
445 struct assign_reference
448 { /* intentionally empty */ }
450 assign_reference( T& r ) : ref_(&r)
453 void operator=( T& r )
463 void swap( assign_reference& r )
465 std::swap( *ref_, *r.ref_ );
479 inline bool operator<( const assign_reference<T>& l,
480 const assign_reference<T>& r )
482 return l.get_ref() < r.get_ref();
486 inline bool operator>( const assign_reference<T>& l,
487 const assign_reference<T>& r )
489 return l.get_ref() > r.get_ref();
493 inline void swap( assign_reference<T>& l,
494 assign_reference<T>& r )
501 template< class T, int N >
502 struct static_generic_list :
503 public converter< static_generic_list<T,N>, assign_reference<T>* >
506 typedef T internal_value_type;
509 typedef assign_reference<internal_value_type> value_type;
510 typedef value_type* iterator;
511 typedef value_type* const_iterator;
512 typedef std::size_t size_type;
513 typedef std::ptrdiff_t difference_type;
516 static_generic_list( T& r ) :
522 static_generic_list& operator()( T& r )
528 iterator begin() const
535 return &refs_[current_];
538 size_type size() const
540 return static_cast<size_type>( current_ );
548 template< class ForwardIterator >
549 static_generic_list& range( ForwardIterator first,
550 ForwardIterator last )
552 for( ; first != last; ++first )
553 this->insert( *first );
557 template< class ForwardRange >
558 static_generic_list& range( ForwardRange& r )
560 return range( boost::begin(r), boost::end(r) );
563 template< class ForwardRange >
564 static_generic_list& range( const ForwardRange& r )
566 return range( boost::begin(r), boost::end(r) );
569 template< class Container >
570 operator Container() const
572 return this-> BOOST_NESTED_TEMPLATE convert_to_container<Container>();
582 static_generic_list();
584 mutable assign_reference<internal_value_type> refs_[N];
588 } // namespace 'assign_detail'
593 inline assign_detail::generic_list<T>
596 return assign_detail::generic_list<T>()( T() );
600 inline assign_detail::generic_list<T>
601 list_of( const T& t )
603 return assign_detail::generic_list<T>()( t );
606 template< int N, class T >
607 inline assign_detail::static_generic_list< BOOST_DEDUCED_TYPENAME assign_detail::assign_decay<T>::type,N>
610 return assign_detail::static_generic_list<BOOST_DEDUCED_TYPENAME assign_detail::assign_decay<T>::type,N>( t );
613 template< int N, class T >
614 inline assign_detail::static_generic_list<const BOOST_DEDUCED_TYPENAME assign_detail::assign_decay<T>::type,N>
615 cref_list_of( const T& t )
617 return assign_detail::static_generic_list<const BOOST_DEDUCED_TYPENAME assign_detail::assign_decay<T>::type,N>( t );
620 #define BOOST_PP_LOCAL_LIMITS (1, BOOST_ASSIGN_MAX_PARAMETERS)
621 #define BOOST_PP_LOCAL_MACRO(n) \
622 template< class T, class U, BOOST_ASSIGN_PARAMS1(n) > \
623 inline assign_detail::generic_list<T> \
624 list_of(U const& u, BOOST_ASSIGN_PARAMS2(n) ) \
626 return assign_detail::generic_list<T>()(u, BOOST_ASSIGN_PARAMS3(n)); \
630 #include BOOST_PP_LOCAL_ITERATE()
632 #define BOOST_PP_LOCAL_LIMITS (1, BOOST_ASSIGN_MAX_PARAMETERS)
633 #define BOOST_PP_LOCAL_MACRO(n) \
634 template< class U, BOOST_ASSIGN_PARAMS1(n) > \
635 inline assign_detail::generic_list< tuple<U, BOOST_ASSIGN_PARAMS4(n)> > \
636 tuple_list_of(U u, BOOST_ASSIGN_PARAMS2_NO_REF(n) ) \
638 return assign_detail::generic_list< tuple<U, BOOST_ASSIGN_PARAMS4(n)> >()( tuple<U,BOOST_ASSIGN_PARAMS4(n)>( u, BOOST_ASSIGN_PARAMS3(n) )); \
642 #include BOOST_PP_LOCAL_ITERATE()
645 template< class Key, class T >
646 inline assign_detail::generic_list< std::pair
648 BOOST_DEDUCED_TYPENAME assign_detail::assign_decay<Key>::type,
649 BOOST_DEDUCED_TYPENAME assign_detail::assign_decay<T>::type
651 map_list_of( const Key& k, const T& t )
653 typedef BOOST_DEDUCED_TYPENAME assign_detail::assign_decay<Key>::type k_type;
654 typedef BOOST_DEDUCED_TYPENAME assign_detail::assign_decay<T>::type t_type;
655 return assign_detail::generic_list< std::pair<k_type,t_type> >()( k, t );
658 template< class F, class S >
659 inline assign_detail::generic_list< std::pair
661 BOOST_DEDUCED_TYPENAME assign_detail::assign_decay<F>::type,
662 BOOST_DEDUCED_TYPENAME assign_detail::assign_decay<S>::type
664 pair_list_of( const F& f, const S& s )
666 return map_list_of( f, s );
670 } // namespace 'assign'
671 } // namespace 'boost'
674 #undef BOOST_ASSIGN_PARAMS1
675 #undef BOOST_ASSIGN_PARAMS2
676 #undef BOOST_ASSIGN_PARAMS3
677 #undef BOOST_ASSIGN_PARAMS4
678 #undef BOOST_ASSIGN_PARAMS2_NO_REF
679 #undef BOOST_ASSIGN_MAX_PARAMETERS