DUNE-FEM (unstable)
rangeutilities.hh
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3// SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
136 constexpr bool operator==(const IntegralRangeIterator & other) const noexcept { return (value_ == other.value_); }
137 constexpr bool operator!=(const IntegralRangeIterator & other) const noexcept { return (value_ != other.value_); }
139 constexpr bool operator<(const IntegralRangeIterator & other) const noexcept { return (value_ <= other.value_); }
140 constexpr bool operator<=(const IntegralRangeIterator & other) const noexcept { return (value_ <= other.value_); }
141 constexpr bool operator>(const IntegralRangeIterator & other) const noexcept { return (value_ >= other.value_); }
142 constexpr bool operator>=(const IntegralRangeIterator & other) const noexcept { return (value_ >= other.value_); }
145 IntegralRangeIterator operator++(int) noexcept { IntegralRangeIterator copy( *this ); ++(*this); return copy; }
148 IntegralRangeIterator operator--(int) noexcept { IntegralRangeIterator copy( *this ); --(*this); return copy; }
153 friend constexpr IntegralRangeIterator operator+(const IntegralRangeIterator &a, difference_type n) noexcept { return IntegralRangeIterator(a.value_ + n); }
154 friend constexpr IntegralRangeIterator operator+(difference_type n, const IntegralRangeIterator &a) noexcept { return IntegralRangeIterator(a.value_ + n); }
155 friend constexpr IntegralRangeIterator operator-(const IntegralRangeIterator &a, difference_type n) noexcept { return IntegralRangeIterator(a.value_ - n); }
157 constexpr difference_type operator-(const IntegralRangeIterator &other) const noexcept { return (static_cast<difference_type>(value_) - static_cast<difference_type>(other.value_)); }
191 constexpr IntegralRange(std::pair<value_type, value_type> range) noexcept : from_(range.first), to_(range.second) {}
204 constexpr size_type size() const noexcept { return (static_cast<size_type>(to_) - static_cast<size_type>(from_)); }
207 constexpr bool contains(value_type index) const noexcept { return from_ <= index && index < to_; }
232 static std::integer_sequence<T, (i+ofs)...> shift_integer_sequence(std::integer_sequence<T, i...>);
243 typedef decltype(shift_integer_sequence<from>(std::make_integer_sequence<T, to-from>())) integer_sequence;
270 constexpr value_type operator[](const size_type &i) const noexcept { return (from + static_cast<value_type>(i)); }
275 static constexpr std::integral_constant<size_type, static_cast<size_type>(to) - static_cast<size_type>(from) > size() noexcept { return {}; }
278 static constexpr bool contains(value_type index) noexcept { return from <= index && index < to; }
312 inline static StaticIntegralRange<T, to, from> range(std::integral_constant<T, from>, std::integral_constant<T, to>) noexcept
345 // \tparam F Type of transformation function that can either be applied directly or after dereferencing
348 template <class I, class F, class TT, class C = typename std::iterator_traits<I>::iterator_category>
374 using pointer = std::conditional_t<std::is_lvalue_reference_v<reference>, value_type*, ProxyArrowResult<reference>>;
376 using Facade = Dune::IteratorFacade<TransformedRangeIterator<I,F,TT,C>, C, value_type, reference, pointer, difference_type>;
387 static constexpr bool isBidirectional = std::is_convertible_v<C, std::bidirectional_iterator_tag>;
388 static constexpr bool isRandomAccess = std::is_convertible_v<C, std::random_access_iterator_tag>;
539 static_assert(std::is_same_v<T, ValueTransformationTag> or std::is_same_v<T, IteratorTransformationTag>,
540 "The TransformationType passed to TransformedRangeView has to be either ValueTransformationTag or IteratorTransformationTag.");
579 std::enable_if_t<std::is_same_v<typename It::iterator_category,std::random_access_iterator_tag>, int> = 0>
589 std::enable_if_t<std::is_same_v<typename It::iterator_category,std::random_access_iterator_tag>, int> = 0>
672 return TransformedRangeView<R, std::decay_t<F>, ValueTransformationTag>(std::forward<R>(range), std::forward<F>(f));
705 return TransformedRangeView<R, std::decay_t<F>, IteratorTransformationTag>(std::forward<R>(range), std::forward<F>(f));
dynamic integer range for use in range-based for loops
Definition: rangeutilities.hh:177
constexpr iterator begin() const noexcept
obtain a random-access iterator to the first element
Definition: rangeutilities.hh:194
constexpr iterator end() const noexcept
obtain a random-access iterator past the last element
Definition: rangeutilities.hh:196
std::make_unsigned_t< T > size_type
unsigned integer type corresponding to value_type
Definition: rangeutilities.hh:184
Impl::IntegralRangeIterator< T > iterator
type of iterator
Definition: rangeutilities.hh:182
constexpr value_type operator[](const value_type &i) const noexcept
access specified element
Definition: rangeutilities.hh:199
constexpr bool contains(value_type index) const noexcept
check whether given index is within range [from, to)
Definition: rangeutilities.hh:207
constexpr bool empty() const noexcept
check whether the range is empty
Definition: rangeutilities.hh:202
constexpr IntegralRange(std::pair< value_type, value_type > range) noexcept
construct integer range std::pair
Definition: rangeutilities.hh:191
constexpr IntegralRange(value_type from, value_type to) noexcept
construct integer range [from, to)
Definition: rangeutilities.hh:187
constexpr size_type size() const noexcept
obtain number of elements in the range
Definition: rangeutilities.hh:204
constexpr IntegralRange(value_type to) noexcept
construct integer range [0, to)
Definition: rangeutilities.hh:189
T value_type
type of integers contained in the range
Definition: rangeutilities.hh:180
CRTP-Mixing class for stl conformant iterators of given iterator category.
Definition: iteratorfacades.hh:1053
constexpr decltype(auto) operator*() const
Dereferencing operator.
Definition: iteratorfacades.hh:1119
static integer range for use in range-based for loops
Definition: rangeutilities.hh:230
static constexpr iterator end() noexcept
obtain a random-access iterator past the last element
Definition: rangeutilities.hh:259
decltype(shift_integer_sequence< from >(std::make_integer_sequence< T, to-from >())) integer_sequence
type of corresponding std::integer_sequence
Definition: rangeutilities.hh:243
static constexpr bool contains(value_type index) noexcept
check whether given index is within range [from, to)
Definition: rangeutilities.hh:278
constexpr StaticIntegralRange() noexcept=default
default constructor
std::make_unsigned_t< T > size_type
unsigned integer type corresponding to value_type
Definition: rangeutilities.hh:240
T value_type
type of integers contained in the range
Definition: rangeutilities.hh:236
constexpr auto operator[](const std::integral_constant< U, i > &) const noexcept -> std::integral_constant< value_type, from+static_cast< value_type >(i)>
access specified element (static version)
Definition: rangeutilities.hh:263
static constexpr std::integral_constant< bool, from==to > empty() noexcept
check whether the range is empty
Definition: rangeutilities.hh:273
static constexpr iterator begin() noexcept
obtain a random-access iterator to the first element
Definition: rangeutilities.hh:257
static constexpr integer_sequence to_integer_sequence() noexcept
return corresponding std::integer_sequence
Definition: rangeutilities.hh:254
constexpr value_type operator[](const size_type &i) const noexcept
access specified element (dynamic version)
Definition: rangeutilities.hh:270
Impl::IntegralRangeIterator< T > iterator
type of iterator
Definition: rangeutilities.hh:238
static constexpr std::integral_constant< size_type, static_cast< size_type >(to) - static_cast< size_type >(from) > size() noexcept
obtain number of elements in the range
Definition: rangeutilities.hh:275
A range transforming the values of another range on-the-fly.
Definition: rangeutilities.hh:501
Impl::TransformedRangeIterator< RawIterator, F *, T > iterator
Iterator type.
Definition: rangeutilities.hh:521
constexpr TransformedRangeView(RR &&rawRange, FF &&f) noexcept
Construct from range and function.
Definition: rangeutilities.hh:535
Impl::TransformedRangeIterator< RawConstIterator, const F *, T > const_iterator
Const iterator type.
Definition: rangeutilities.hh:513
std::remove_reference_t< R > RawRange
Export type of the wrapped untransformed range.
Definition: rangeutilities.hh:529
RawRange & rawRange() noexcept
Export the wrapped untransformed range.
Definition: rangeutilities.hh:631
const RawRange & rawRange() const noexcept
Export the wrapped untransformed range.
Definition: rangeutilities.hh:623
constexpr const_iterator begin() const noexcept
Obtain a iterator to the first element.
Definition: rangeutilities.hh:551
auto size() const noexcept
Obtain the size of the range.
Definition: rangeutilities.hh:607
constexpr const_iterator end() const noexcept
Obtain a iterator past the last element.
Definition: rangeutilities.hh:567
constexpr bool empty() const noexcept
Checks whether the range is empty.
Definition: rangeutilities.hh:615
typename AutonomousValueType< T >::type AutonomousValue
Type free of internal references that T can be converted to.
Definition: typetraits.hh:588
EnableIfInterOperable< T1, T2, bool >::type operator<(const RandomAccessIteratorFacade< T1, V1, R1, D > &lhs, const RandomAccessIteratorFacade< T2, V2, R2, D > &rhs)
Comparison operator.
Definition: iteratorfacades.hh:638
EnableIfInterOperable< T1, T2, bool >::type operator>(const RandomAccessIteratorFacade< T1, V1, R1, D > &lhs, const RandomAccessIteratorFacade< T2, V2, R2, D > &rhs)
Comparison operator.
Definition: iteratorfacades.hh:684
EnableIfInterOperable< T1, T2, bool >::type operator<=(const RandomAccessIteratorFacade< T1, V1, R1, D > &lhs, const RandomAccessIteratorFacade< T2, V2, R2, D > &rhs)
Comparison operator.
Definition: iteratorfacades.hh:661
EnableIfInterOperable< T1, T2, bool >::type operator==(const ForwardIteratorFacade< T1, V1, R1, D > &lhs, const ForwardIteratorFacade< T2, V2, R2, D > &rhs)
Checks for equality.
Definition: iteratorfacades.hh:238
EnableIfInterOperable< T1, T2, bool >::type operator>=(const RandomAccessIteratorFacade< T1, V1, R1, D > &lhs, const RandomAccessIteratorFacade< T2, V2, R2, D > &rhs)
Comparison operator.
Definition: iteratorfacades.hh:706
EnableIfInterOperable< T1, T2, bool >::type operator!=(const ForwardIteratorFacade< T1, V1, R1, D > &lhs, const ForwardIteratorFacade< T2, V2, R2, D > &rhs)
Checks for inequality.
Definition: iteratorfacades.hh:260
auto iteratorTransformedRangeView(R &&range, F &&f)
Create a TransformedRangeView using an iterator transformation.
Definition: rangeutilities.hh:703
auto transformedRangeView(R &&range, F &&f)
Create a TransformedRangeView.
Definition: rangeutilities.hh:670
auto sparseRange(Range &&range)
Allow structured-binding for-loops for sparse iterators.
Definition: rangeutilities.hh:722
This file implements iterator facade classes for writing stl conformant iterators.
Check if a type is callable with ()-operator and given arguments.
Definition: typetraits.hh:162
This class encapsulates access of IteratorFacade.
Definition: iteratorfacades.hh:786
Tag to enable iterator based transformations in TransformedRangeView.
Definition: rangeutilities.hh:333
Tag to enable value based transformations in TransformedRangeView.
Definition: rangeutilities.hh:328
Traits for type conversions and type information.
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