NCollection_ForwardRange.hxx File Reference

STL range-for adapter for OCCT iterators following the More()/Next() pattern. More...

#include <iterator>
#include <type_traits>
#include <utility>

Data Structures
struct	NCollection_ForwardRangeDetail::HasValue< T, typename >
	SFINAE: detect .Value() const. More...
struct	NCollection_ForwardRangeDetail::HasValue< T, std::void_t< decltype(std::declval< const T & >().Value())> >
struct	NCollection_ForwardRangeDetail::HasCurrent< T, typename >
	SFINAE: detect .Current() const. More...
struct	NCollection_ForwardRangeDetail::HasCurrent< T, std::void_t< decltype(std::declval< const T & >().Current())> >
struct	NCollection_ForwardRangeDetail::HasCurrentId< T, typename >
	SFINAE: detect .CurrentId() const. More...
struct	NCollection_ForwardRangeDetail::HasCurrentId< T, std::void_t< decltype(std::declval< const T & >().CurrentId())> >
struct	NCollection_ForwardRangeDetail::AccessorTraits< T, std::enable_if_t< HasValue< T >::value > >
	Priority 1: has Value() More...
struct	NCollection_ForwardRangeDetail::AccessorTraits< T, std::enable_if_t<!HasValue< T >::value &&HasCurrent< T >::value > >
	Priority 2: has Current() but not Value() More...
struct	NCollection_ForwardRangeDetail::AccessorTraits< T, std::enable_if_t<!HasValue< T >::value &&!HasCurrent< T >::value &&HasCurrentId< T >::value > >
	Priority 3: has CurrentId() but not Value() or Current() More...
struct	NCollection_ForwardRangeDetail::ArrowProxy< ValueT >
	Proxy for operator-> when the accessor returns a value (not a reference). More...
struct	NCollection_ForwardRangeSentinel
	Empty sentinel type used as the end marker for range-for loops. More...
class	NCollection_ForwardRangeIterator< HostType >
	STL input iterator that wraps an OCCT More()/Next() iterator. More...
struct	NCollection_ForwardRangeIterator< HostType >::PostfixProxy
	Postfix increment: captures the current value, then advances. Returns a proxy holding the old value (safe for non-copyable hosts). More...
class	NCollection_ForwardRange< HostType >
	Standalone range wrapper for OCCT iterators. More...

Namespaces
namespace	NCollection_ForwardRangeDetail

Functions
template<typename T >
	NCollection_ForwardRange (T &&) -> NCollection_ForwardRange< std::remove_reference_t< T > >
	CTAD deduction guide: deduces HostType from the constructor argument.

Detailed Description

STL range-for adapter for OCCT iterators following the More()/Next() pattern.

Provides reusable iterator/sentinel types that enable range-based for loops on any OCCT iterator or explorer class with More(), Next(), and a value accessor.

The value accessor is detected automatically via SFINAE with priority: Value() > Current() > CurrentId().

Two usage modes:

1. In-class integration: add begin()/end() methods using the provided types.

   NCollection_ForwardRangeIterator<MyIterator> begin()
   {
     return NCollection_ForwardRangeIterator<MyIterator>(this);
   }
   NCollection_ForwardRangeSentinel end() const { return {}; }

2. Standalone wrapper for unmodified classes:

   for (const TopoDS_Shape& aFace :
        NCollection_ForwardRange(TopExp_Explorer(aShape, TopAbs_FACE)))
   {
     // ...
   }

Function Documentation

NCollection_ForwardRange()

template<typename T >

NCollection_ForwardRange

(

T &&

)

-> NCollection_ForwardRange< std::remove_reference_t< T > >

CTAD deduction guide: deduces HostType from the constructor argument.