CRTP base class for message readers providing common functionality. More...

#include <reader.hpp>

Public Types
using	value_type = typename IterType::value_type
using	size_type = MessageManager::size_type
using	iterator = IterType
using	const_iterator = IterType

Public Member Functions
constexpr	MessageReaderBase () noexcept=default
	MessageReaderBase (const MessageReaderBase &)=delete
constexpr	MessageReaderBase (MessageReaderBase &&) noexcept=default
constexpr	~MessageReaderBase () noexcept=default
MessageReaderBase &	operator= (const MessageReaderBase &)=delete
constexpr MessageReaderBase &	operator= (MessageReaderBase &&) noexcept=default
template<typename Action> requires std::invocable<Action, const value_type&>
constexpr void	ForEach (const Action &action) const
	Applies an action to every message (unwrapped const T&).
constexpr auto	Collect () const -> std::vector< T >
	Collects all messages (previous + current) into a vector of raw T values.
template<typename Alloc> requires std::same_as<typename std::allocator_traits<Alloc>::value_type, T>
constexpr auto	CollectWith (const Alloc &alloc) const -> std::vector< T, Alloc >
	Collects all messages into a vector of raw T values using a custom allocator.
constexpr auto	CollectWith (std::pmr::memory_resource *resource) const -> std::pmr::vector< T >
	Collects all messages into a vector of raw T values using a memory resource.
auto	CollectWith (std::nullptr_t) const -> std::pmr::vector< T >=delete
template<typename OutIt> requires std::output_iterator<OutIt, T>
constexpr void	ReadInto (OutIt out) const
	Reads all messages into an output iterator.
template<typename Pred> requires std::predicate<Pred, const value_type&>
constexpr auto	Filter (Pred predicate) const noexcept(noexcept(GetDerived().begin().Filter(std::move(predicate)))) -> utils::FilterAdapter< iterator, Pred >
	Returns a lazy filter adapter over the wrapped message sequence.
template<typename Func> requires std::invocable<Func, const value_type&>
constexpr auto	Map (Func transform) const noexcept(noexcept(GetDerived().begin().Map(std::move(transform)))) -> utils::MapAdapter< iterator, Func >
	Returns a lazy map adapter over the wrapped message sequence.
constexpr auto	Take (size_t count) const noexcept(noexcept(GetDerived().begin().Take(count))) -> utils::TakeAdapter< iterator >
	Returns a lazy adapter yielding at most count wrappers.
constexpr auto	Skip (size_t count) const noexcept(noexcept(GetDerived().begin().Skip(count))) -> utils::SkipAdapter< iterator >
	Returns a lazy adapter that skips the first count wrappers.
template<typename Pred> requires std::predicate<Pred, const value_type&>
constexpr auto	TakeWhile (Pred predicate) const noexcept(noexcept(GetDerived().begin().TakeWhile(std::move(predicate)))) -> utils::TakeWhileAdapter< iterator, Pred >
	Returns a lazy adapter that yields wrappers while predicate is true.
template<typename Pred> requires std::predicate<Pred, const value_type&>
constexpr auto	SkipWhile (Pred predicate) const noexcept(noexcept(GetDerived().begin().SkipWhile(std::move(predicate)))) -> utils::SkipWhileAdapter< iterator, Pred >
	Returns a lazy adapter that skips wrappers while predicate is true.
constexpr auto	Enumerate () const noexcept(noexcept(GetDerived().begin().Enumerate())) -> utils::EnumerateAdapter< iterator >
	Returns a lazy adapter that pairs each wrapper with its zero-based index.
template<typename Func> requires std::invocable<Func, const value_type&>
constexpr auto	Inspect (Func inspector) const noexcept(noexcept(GetDerived().begin().Inspect(std::move(inspector)))) -> utils::InspectAdapter< iterator, Func >
	Returns a lazy adapter that calls inspector on each wrapper as a side-effect.
constexpr auto	StepBy (size_t step) const noexcept(noexcept(GetDerived().begin().StepBy(step))) -> utils::StepByAdapter< iterator >
	Returns a lazy adapter that yields every step-th wrapper.
template<typename Iter> requires utils::ChainAdapterRequirements<iterator, Iter>
constexpr auto	Chain (Iter first, Iter last) const noexcept(noexcept(GetDerived().begin().Chain(std::move(first), std::move(last)))) -> utils::ChainAdapter< iterator, Iter >
	Returns a lazy adapter that chains another range of wrappers.
template<std::ranges::input_range R> requires utils::ChainAdapterRequirements<iterator, std::ranges::iterator_t<R>>
constexpr auto	Chain (const R &range) const noexcept(noexcept(GetDerived().begin().Chain(range))) -> utils::ChainAdapter< iterator, std::ranges::iterator_t< R > >
	Returns a lazy adapter that chains another range of wrappers.
constexpr auto	Reverse () const noexcept(noexcept(GetDerived().begin().Reverse())) -> utils::ReverseAdapter< iterator >
	Returns a lazy adapter that yields wrappers in reverse order.
constexpr auto	Slide (size_t window_size) const noexcept(noexcept(GetDerived().begin().Slide(window_size))) -> utils::SlideAdapter< iterator >
	Returns a lazy adapter that yields windows of window_size wrappers.
constexpr auto	Stride (size_t stride) const noexcept(noexcept(GetDerived().begin().Stride(stride))) -> utils::StrideAdapter< iterator >
	Returns a lazy adapter that yields every stride-th wrapper.
template<typename Iter> requires utils::ZipAdapterRequirements<iterator, Iter>
constexpr auto	Zip (Iter first, Iter last) const noexcept(noexcept(GetDerived().begin().Zip(std::move(first), std::move(last)))) -> utils::ZipAdapter< iterator, Iter >
	Returns a lazy adapter that yields pairs of wrappers from two ranges.
template<typename R> requires utils::ZipAdapterRequirements<iterator, std::ranges::iterator_t<R>>
constexpr auto	Zip (const R &range) const noexcept(noexcept(GetDerived().begin().Zip(range))) -> utils::ZipAdapter< iterator, std::ranges::iterator_t< R > >
	Returns a lazy adapter that yields pairs of wrappers from two ranges.
template<typename Acc, typename Folder> requires std::invocable<Folder, Acc, const value_type&>
constexpr Acc	Fold (Acc init, const Folder &folder) const
	Left-folds all messages with an accumulator.
template<typename Pred> requires std::predicate<Pred, const value_type&>
constexpr auto	Find (const Pred &predicate) const -> std::optional< value_type >
	Returns a pointer to the first message matching a predicate.
template<typename Pred> requires std::predicate<Pred, const value_type&>
constexpr size_type	CountIf (const Pred &predicate) const
	Counts messages matching a predicate.
template<typename Pred> requires std::predicate<Pred, const value_type&>
constexpr auto	Partition (const Pred &predicate) const -> std::pair< std::vector< value_type >, std::vector< value_type > >
	Partitions wrapped messages into matching and non-matching groups.
template<typename KeyFunc> requires std::invocable<KeyFunc, const value_type&>
constexpr auto	MaxBy (const KeyFunc &key_func) const -> std::optional< value_type >
	Finds the wrapped message with the maximum extracted key.
template<typename KeyFunc> requires std::invocable<KeyFunc, const value_type&>
constexpr auto	MinBy (const KeyFunc &key_func) const -> std::optional< value_type >
	Finds the wrapped message with the minimum extracted key.
template<typename KeyFunc> requires std::invocable<KeyFunc, const value_type&>
constexpr auto	GroupBy (const KeyFunc &key_func) const -> std::unordered_map< std::decay_t< std::invoke_result_t< KeyFunc, const value_type & > >, std::vector< value_type > >
	Groups wrapped messages by a key extracted from each wrapper.
template<typename Pred> requires std::predicate<Pred, const value_type&>
constexpr bool	Any (const Pred &predicate) const
	Checks if any message matches a predicate.
template<typename Pred> requires std::predicate<Pred, const value_type&>
constexpr bool	All (const Pred &predicate) const
	Checks if all messages match a predicate.
template<typename Pred> requires std::predicate<Pred, const value_type&>
constexpr bool	None (const Pred &predicate) const
	Checks if no messages match a predicate.
constexpr bool	Empty () const noexcept
	Checks if there are no messages.
constexpr size_type	Count () const noexcept
	Returns the total number of messages (previous + current).

Detailed Description

template<typename Derived, MessageTrait T, typename IterType>
class helios::ecs::MessageReaderBase< Derived, T, IterType >

CRTP base class for message readers providing common functionality.

This base class contains all reader methods except consumption methods (ConsumeAll and ConsumeIf) which are only available on ConsumableMessageReader.

Template Parameters

Derived	The derived class (CRTP)
T	Message type
IterType	The iterator type for this reader

Definition at line 294 of file reader.hpp.

Member Typedef Documentation

◆ const_iterator

template<typename Derived, MessageTrait T, typename IterType>

using helios::ecs::MessageReaderBase< Derived, T, IterType >::const_iterator = IterType

Definition at line 299 of file reader.hpp.

◆ iterator

template<typename Derived, MessageTrait T, typename IterType>

using helios::ecs::MessageReaderBase< Derived, T, IterType >::iterator = IterType

Definition at line 298 of file reader.hpp.

◆ size_type

template<typename Derived, MessageTrait T, typename IterType>

using helios::ecs::MessageReaderBase< Derived, T, IterType >::size_type = MessageManager::size_type

Definition at line 297 of file reader.hpp.

◆ value_type

template<typename Derived, MessageTrait T, typename IterType>

using helios::ecs::MessageReaderBase< Derived, T, IterType >::value_type = typename IterType::value_type

Definition at line 296 of file reader.hpp.

Constructor & Destructor Documentation

◆ MessageReaderBase() [1/3]

template<typename Derived, MessageTrait T, typename IterType>

helios::ecs::MessageReaderBase< Derived, T, IterType >::MessageReaderBase ( )

constexprdefaultnoexcept

◆ MessageReaderBase() [2/3]

template<typename Derived, MessageTrait T, typename IterType>

helios::ecs::MessageReaderBase< Derived, T, IterType >::MessageReaderBase ( const MessageReaderBase< Derived, T, IterType > & )

delete

◆ MessageReaderBase() [3/3]

template<typename Derived, MessageTrait T, typename IterType>

helios::ecs::MessageReaderBase< Derived, T, IterType >::MessageReaderBase ( MessageReaderBase< Derived, T, IterType > && )

constexprdefaultnoexcept

◆ ~MessageReaderBase()

template<typename Derived, MessageTrait T, typename IterType>

helios::ecs::MessageReaderBase< Derived, T, IterType >::~MessageReaderBase ( )

constexprdefaultnoexcept

Member Function Documentation

◆ All()

template<typename Derived, MessageTrait T, typename IterType>

template<typename Pred>
requires std::predicate<Pred, const value_type&>

bool helios::ecs::MessageReaderBase< Derived, T, IterType >::All ( const Pred & predicate ) const

inlinenodiscardconstexpr

Checks if all messages match a predicate.

Template Parameters

Pred	Predicate type (const value_type&) -> bool

Parameters

predicate Predicate function

Returns: true if all messages match (vacuously true if empty)

Definition at line 698 of file reader.hpp.

◆ Any()

template<typename Derived, MessageTrait T, typename IterType>

template<typename Pred>
requires std::predicate<Pred, const value_type&>

bool helios::ecs::MessageReaderBase< Derived, T, IterType >::Any ( const Pred & predicate ) const

inlinenodiscardconstexpr

Checks if any message matches a predicate.

Template Parameters

Pred	Predicate type (const value_type&) -> bool

Parameters

predicate Predicate function

Returns: true if at least one message matches

Definition at line 686 of file reader.hpp.

◆ Chain() [1/2]

template<typename Derived, MessageTrait T, typename IterType>

template<std::ranges::input_range R>
requires utils::ChainAdapterRequirements<iterator, std::ranges::iterator_t<R>>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::Chain ( const R & range ) const -> utils::ChainAdapter< iterator, std::ranges::iterator_t< R > >

inlinenodiscardconstexprnoexcept

Returns a lazy adapter that chains another range of wrappers.

Template Parameters

R	Range type

Parameters

range Range to chain

Returns: ChainAdapter over the iterator

Definition at line 512 of file reader.hpp.

◆ Chain() [2/2]

template<typename Derived, MessageTrait T, typename IterType>

template<typename Iter>
requires utils::ChainAdapterRequirements<iterator, Iter>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::Chain	(	Iter	first,
		Iter	last ) const -> utils::ChainAdapter< iterator, Iter >

inlinenodiscardconstexprnoexcept

Returns a lazy adapter that chains another range of wrappers.

Template Parameters

Iter	Iterator type of the range

Parameters

first	Iterator to the first element of the range
last	Iterator to the end of the range

Returns: ChainAdapter over the iterator

Definition at line 496 of file reader.hpp.

◆ Collect()

template<typename Derived, MessageTrait T, typename IterType>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::Collect ( ) const -> std::vector< T >

nodiscardconstexpr

Collects all messages (previous + current) into a vector of raw T values.

Note: This shadows FunctionalAdapterBase::Collect(). To collect wrapper values, chain a lazy adapter first (e.g., reader.Filter(...).Collect()).

Returns: Vector containing copies of all messages

Definition at line 977 of file reader.hpp.

◆ CollectWith() [1/3]

template<typename Derived, MessageTrait T, typename IterType>
requires std::same_as<typename std::allocator_traits<Alloc>::value_type, T>

template<typename Alloc>
requires std::same_as<typename std::allocator_traits<Alloc>::value_type, T>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::CollectWith ( const Alloc & alloc ) const -> std::vector< T, Alloc >

nodiscardconstexpr

Collects all messages into a vector of raw T values using a custom allocator.

Template Parameters

Alloc STL-compatible allocator type for T

Parameters

alloc Allocator instance

Returns: Vector containing copies of all messages, using the provided allocator

Definition at line 991 of file reader.hpp.

◆ CollectWith() [2/3]

template<typename Derived, MessageTrait T, typename IterType>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::CollectWith ( std::nullptr_t ) const -> std::pmr::vector< T >=delete

delete

◆ CollectWith() [3/3]

template<typename Derived, MessageTrait T, typename IterType>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::CollectWith ( std::pmr::memory_resource * resource ) const -> std::pmr::vector< T >

nodiscardconstexpr

Collects all messages into a vector of raw T values using a memory resource.

Parameters

resource Memory resource for allocating the vector

Returns: Vector containing copies of all messages, using the provided memory resource

Definition at line 1003 of file reader.hpp.

◆ Count()

template<typename Derived, MessageTrait T, typename IterType>

size_type helios::ecs::MessageReaderBase< Derived, T, IterType >::Count ( ) const

inlinenodiscardconstexprnoexcept

Returns the total number of messages (previous + current).

Returns: Total message count

Definition at line 727 of file reader.hpp.

◆ CountIf()

template<typename Derived, MessageTrait T, typename IterType>

template<typename Pred>
requires std::predicate<Pred, const value_type&>

size_type helios::ecs::MessageReaderBase< Derived, T, IterType >::CountIf ( const Pred & predicate ) const

inlinenodiscardconstexpr

Counts messages matching a predicate.

Template Parameters

Pred	Predicate type (const value_type&) -> bool

Parameters

predicate Predicate function

Returns: Number of matching messages

Definition at line 619 of file reader.hpp.

◆ Empty()

template<typename Derived, MessageTrait T, typename IterType>

bool helios::ecs::MessageReaderBase< Derived, T, IterType >::Empty ( ) const

inlinenodiscardconstexprnoexcept

Checks if there are no messages.

Returns: true if both previous and current spans are empty

Definition at line 718 of file reader.hpp.

◆ Enumerate()

template<typename Derived, MessageTrait T, typename IterType>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::Enumerate ( ) const -> utils::EnumerateAdapter< iterator >

inlinenodiscardconstexprnoexcept

Returns a lazy adapter that pairs each wrapper with its zero-based index.

Returns: EnumerateAdapter over the iterator

Definition at line 454 of file reader.hpp.

◆ Filter()

template<typename Derived, MessageTrait T, typename IterType>

template<typename Pred>
requires std::predicate<Pred, const value_type&>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::Filter ( Pred predicate ) const -> utils::FilterAdapter< iterator, Pred >

inlinenodiscardconstexprnoexcept

Returns a lazy filter adapter over the wrapped message sequence.

The adapter yields only those wrapper elements for which predicate returns true. Chain further adapters or call terminal operations (.Collect(), .ForEach(), etc.) on the result.

Template Parameters

Pred	Predicate type (const value_type&) -> bool

Parameters

predicate Filter predicate

Returns: FilterAdapter over the iterator

Definition at line 376 of file reader.hpp.

◆ Find()

template<typename Derived, MessageTrait T, typename IterType>

template<typename Pred>
requires std::predicate<Pred, const value_type&>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::Find ( const Pred & predicate ) const -> std::optional< value_type >

inlinenodiscardconstexpr

Returns a pointer to the first message matching a predicate.

Template Parameters

Pred	Predicate type (const value_type&) -> bool

Parameters

predicate Predicate function

Returns: Optional containing the first matching message, or std::nullopt if none found

Definition at line 606 of file reader.hpp.

◆ Fold()

template<typename Derived, MessageTrait T, typename IterType>

template<typename Acc, typename Folder>
requires std::invocable<Folder, Acc, const value_type&>

Acc helios::ecs::MessageReaderBase< Derived, T, IterType >::Fold	(	Acc	init,
		const Folder &	folder ) const

inlinenodiscardconstexpr

Left-folds all messages with an accumulator.

Template Parameters

Acc	Accumulator type
Folder	Callable type (Acc, const value_type&) -> Acc

Parameters

init	Initial accumulator value
folder	Folding function

Returns: Final accumulated value

Definition at line 593 of file reader.hpp.

◆ ForEach()

template<typename Derived, MessageTrait T, typename IterType>

template<typename Action>
requires std::invocable<Action, const value_type&>

void helios::ecs::MessageReaderBase< Derived, T, IterType >::ForEach ( const Action & action ) const

inlineconstexpr

Applies an action to every message (unwrapped const T&).

Template Parameters

Action Callable type (const value_type&) -> void

Parameters

action Action to apply

Definition at line 317 of file reader.hpp.

◆ GroupBy()

template<typename Derived, MessageTrait T, typename IterType>

template<typename KeyFunc>
requires std::invocable<KeyFunc, const value_type&>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::GroupBy ( const KeyFunc & key_func ) const -> std::unordered_map< std::decay_t< std::invoke_result_t< KeyFunc, const value_type & > >, std::vector< value_type > >

inlinenodiscardconstexpr

Groups wrapped messages by a key extracted from each wrapper.

Template Parameters

KeyFunc Key extractor type (const value_type&) -> Key

Parameters

key_func Key extraction function

Returns: Hash map from key to grouped wrappers

Definition at line 671 of file reader.hpp.

◆ Inspect()

template<typename Derived, MessageTrait T, typename IterType>

template<typename Func>
requires std::invocable<Func, const value_type&>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::Inspect ( Func inspector ) const -> utils::InspectAdapter< iterator, Func >

inlinenodiscardconstexprnoexcept

Returns a lazy adapter that calls inspector on each wrapper as a side-effect.

Template Parameters

Func	Inspector type (const value_type&) -> void

Parameters

inspector Side-effect function

Returns: InspectAdapter over the iterator

Definition at line 469 of file reader.hpp.

◆ Map()

template<typename Derived, MessageTrait T, typename IterType>

template<typename Func>
requires std::invocable<Func, const value_type&>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::Map ( Func transform ) const -> utils::MapAdapter< iterator, Func >

inlinenodiscardconstexprnoexcept

Returns a lazy map adapter over the wrapped message sequence.

Each wrapper is transformed by transform.

Template Parameters

Func	Transform type (const value_type&) -> R

Parameters

transform Transformation function

Returns: MapAdapter over the iterator

Definition at line 391 of file reader.hpp.

◆ MaxBy()

template<typename Derived, MessageTrait T, typename IterType>

template<typename KeyFunc>
requires std::invocable<KeyFunc, const value_type&>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::MaxBy ( const KeyFunc & key_func ) const -> std::optional< value_type >

inlinenodiscardconstexpr

Finds the wrapped message with the maximum extracted key.

Template Parameters

KeyFunc Key extractor type (const value_type&) -> Key

Parameters

key_func Key extraction function

Returns: Matching wrapper, or std::nullopt if the reader is empty

Definition at line 645 of file reader.hpp.

◆ MinBy()

template<typename Derived, MessageTrait T, typename IterType>

template<typename KeyFunc>
requires std::invocable<KeyFunc, const value_type&>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::MinBy ( const KeyFunc & key_func ) const -> std::optional< value_type >

inlinenodiscardconstexpr

Finds the wrapped message with the minimum extracted key.

Template Parameters

KeyFunc Key extractor type (const value_type&) -> Key

Parameters

key_func Key extraction function

Returns: Matching wrapper, or std::nullopt if the reader is empty

Definition at line 658 of file reader.hpp.

◆ None()

template<typename Derived, MessageTrait T, typename IterType>

template<typename Pred>
requires std::predicate<Pred, const value_type&>

bool helios::ecs::MessageReaderBase< Derived, T, IterType >::None ( const Pred & predicate ) const

inlinenodiscardconstexpr

Checks if no messages match a predicate.

Template Parameters

Pred	Predicate type (const value_type&) -> bool

Parameters

predicate Predicate function

Returns: true if no messages match (vacuously true if empty)

Definition at line 710 of file reader.hpp.

◆ operator=() [1/2]

template<typename Derived, MessageTrait T, typename IterType>

MessageReaderBase & helios::ecs::MessageReaderBase< Derived, T, IterType >::operator= ( const MessageReaderBase< Derived, T, IterType > & )

delete

◆ operator=() [2/2]

template<typename Derived, MessageTrait T, typename IterType>

MessageReaderBase & helios::ecs::MessageReaderBase< Derived, T, IterType >::operator= ( MessageReaderBase< Derived, T, IterType > && )

constexprdefaultnoexcept

◆ Partition()

template<typename Derived, MessageTrait T, typename IterType>

template<typename Pred>
requires std::predicate<Pred, const value_type&>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::Partition ( const Pred & predicate ) const -> std::pair< std::vector< value_type >, std::vector< value_type > >

inlinenodiscardconstexpr

Partitions wrapped messages into matching and non-matching groups.

Template Parameters

Pred	Predicate type (const value_type&) -> bool

Parameters

predicate Predicate function

Returns: Pair of vectors: first contains matching wrappers, second contains non-matching wrappers

Definition at line 632 of file reader.hpp.

◆ ReadInto()

template<typename Derived, MessageTrait T, typename IterType>
requires std::output_iterator<OutIt, T>

template<typename OutIt>
requires std::output_iterator<OutIt, T>

void helios::ecs::MessageReaderBase< Derived, T, IterType >::ReadInto ( OutIt out ) const

constexpr

Reads all messages into an output iterator.

Template Parameters

OutIt Output iterator type for T

Parameters

out	Output iterator

Definition at line 1016 of file reader.hpp.

◆ Reverse()

template<typename Derived, MessageTrait T, typename IterType>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::Reverse ( ) const -> utils::ReverseAdapter< iterator >

inlinenodiscardconstexprnoexcept

Returns a lazy adapter that yields wrappers in reverse order.

Returns: ReverseAdapter over the iterator

Definition at line 522 of file reader.hpp.

◆ Skip()

template<typename Derived, MessageTrait T, typename IterType>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::Skip ( size_t count ) const -> utils::SkipAdapter< iterator >

inlinenodiscardconstexprnoexcept

Returns a lazy adapter that skips the first count wrappers.

Parameters

count Number of elements to skip

Returns: SkipAdapter over the iterator

Definition at line 413 of file reader.hpp.

◆ SkipWhile()

template<typename Derived, MessageTrait T, typename IterType>

template<typename Pred>
requires std::predicate<Pred, const value_type&>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::SkipWhile ( Pred predicate ) const -> utils::SkipWhileAdapter< iterator, Pred >

inlinenodiscardconstexprnoexcept

Returns a lazy adapter that skips wrappers while predicate is true.

Template Parameters

Pred	Predicate type (const value_type&) -> bool

Parameters

predicate Skip condition

Returns: SkipWhileAdapter over the iterator

Definition at line 443 of file reader.hpp.

◆ Slide()

template<typename Derived, MessageTrait T, typename IterType>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::Slide ( size_t window_size ) const -> utils::SlideAdapter< iterator >

inlinenodiscardconstexprnoexcept

Returns a lazy adapter that yields windows of window_size wrappers.

Parameters

window_size Number of wrappers to include in each window

Returns: SlideAdapter over the iterator

Definition at line 534 of file reader.hpp.

◆ StepBy()

template<typename Derived, MessageTrait T, typename IterType>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::StepBy ( size_t step ) const -> utils::StepByAdapter< iterator >

inlinenodiscardconstexprnoexcept

Returns a lazy adapter that yields every step-th wrapper.

Parameters

step	Step size (must be > 0)

Warning: Triggers assertion if step == 0.

Returns: StepByAdapter over the iterator

Definition at line 481 of file reader.hpp.

◆ Stride()

template<typename Derived, MessageTrait T, typename IterType>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::Stride ( size_t stride ) const -> utils::StrideAdapter< iterator >

inlinenodiscardconstexprnoexcept

Returns a lazy adapter that yields every stride-th wrapper.

Parameters

stride Number of wrappers to skip between each yield

Returns: StrideAdapter over the iterator

Definition at line 545 of file reader.hpp.

◆ Take()

template<typename Derived, MessageTrait T, typename IterType>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::Take ( size_t count ) const -> utils::TakeAdapter< iterator >

inlinenodiscardconstexprnoexcept

Returns a lazy adapter yielding at most count wrappers.

Parameters

count Maximum number of elements to yield

Returns: TakeAdapter over the iterator

Definition at line 402 of file reader.hpp.

◆ TakeWhile()

template<typename Derived, MessageTrait T, typename IterType>

template<typename Pred>
requires std::predicate<Pred, const value_type&>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::TakeWhile ( Pred predicate ) const -> utils::TakeWhileAdapter< iterator, Pred >

inlinenodiscardconstexprnoexcept

Returns a lazy adapter that yields wrappers while predicate is true.

Template Parameters

Pred	Predicate type (const value_type&) -> bool

Parameters

predicate Stop condition

Returns: TakeWhileAdapter over the iterator

Definition at line 428 of file reader.hpp.

◆ Zip() [1/2]

template<typename Derived, MessageTrait T, typename IterType>

template<typename R>
requires utils::ZipAdapterRequirements<iterator, std::ranges::iterator_t<R>>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::Zip ( const R & range ) const -> utils::ZipAdapter< iterator, std::ranges::iterator_t< R > >

inlinenodiscardconstexprnoexcept

Returns a lazy adapter that yields pairs of wrappers from two ranges.

Template Parameters

R	Type of the range for the second range

Parameters

range The range to zip with the first range

Returns: ZipAdapter over the iterator

Definition at line 577 of file reader.hpp.

◆ Zip() [2/2]

template<typename Derived, MessageTrait T, typename IterType>

template<typename Iter>
requires utils::ZipAdapterRequirements<iterator, Iter>

auto helios::ecs::MessageReaderBase< Derived, T, IterType >::Zip	(	Iter	first,
		Iter	last ) const -> utils::ZipAdapter< iterator, Iter >

inlinenodiscardconstexprnoexcept

Returns a lazy adapter that yields pairs of wrappers from two ranges.

Template Parameters

Iter	Type of the iterator for the second range

Parameters

first	Iterator to the first element of the second range
last	Iterator to the end of the second range

Returns: ZipAdapter over the iterator

Definition at line 561 of file reader.hpp.

Public Types

Public Member Functions

Detailed Description

Member Typedef Documentation

◆ const_iterator

◆ iterator

◆ size_type

◆ value_type

Constructor & Destructor Documentation

◆ MessageReaderBase() [1/3]

◆ MessageReaderBase() [2/3]

◆ MessageReaderBase() [3/3]

◆ ~MessageReaderBase()

Member Function Documentation

◆ All()

◆ Any()

◆ Chain() [1/2]

◆ Chain() [2/2]

◆ Collect()

◆ CollectWith() [1/3]

◆ CollectWith() [2/3]

◆ CollectWith() [3/3]

◆ Count()

◆ CountIf()

◆ Empty()

◆ Enumerate()

◆ Filter()

◆ Find()

◆ Fold()

◆ ForEach()

◆ GroupBy()

◆ Inspect()

◆ Map()

◆ MaxBy()

◆ MinBy()

◆ None()

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ Partition()

◆ ReadInto()

◆ Reverse()

◆ Skip()

◆ SkipWhile()

◆ Slide()

◆ StepBy()

◆ Stride()

◆ Take()

◆ TakeWhile()

◆ Zip() [1/2]

◆ Zip() [2/2]