seqan3::detail::adaptor_for_view_without_args< view_type > Class Template Reference

Template for range adaptor closure objects that store no arguments and always delegate to the view constructor. More...

#include <seqan3/range/views/detail.hpp>

Inheritance diagram for seqan3::detail::adaptor_for_view_without_args< view_type >:

Public Member Functions
constexpr auto	operator() (urng_t &&urange) &&
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
constexpr auto	operator() (urng_t &&urange) const &
	Function-style overload for ranges.
Constructors, destructor and assignment
constexpr	adaptor_for_view_without_args ()=default
	Defaulted.
constexpr	adaptor_for_view_without_args (adaptor_for_view_without_args const &) noexcept=default
	Defaulted.
constexpr	adaptor_for_view_without_args (adaptor_for_view_without_args &&) noexcept=default
	Defaulted.
constexpr adaptor_for_view_without_args &	operator= (adaptor_for_view_without_args const &) noexcept=default
	Defaulted.
constexpr adaptor_for_view_without_args &	operator= (adaptor_for_view_without_args &&) noexcept=default
	Defaulted.
	~adaptor_for_view_without_args () noexcept=default
	Defaulted.

Private Types
using	base_type = adaptor_base< adaptor_for_view_without_args< view_type > >
	Type of the CRTP-base.

Private Member Functions
constexpr auto	pass_args_to_impl (urng_t &&urange, std::index_sequence< Is... > const &) &&
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
constexpr auto	pass_args_to_impl (urng_t &&urange, std::index_sequence< Is... > const &) const &
	Helper function to unpack the tuple and delegate to the derived type.

Static Private Member Functions
template<typename ... arg_types>
static auto	impl (arg_types &&... args)
	Call the view's constructor with the given arguments (all of the base class'es operators ultimately resolve to this function call). More...

Private Attributes
std::tuple< stored_args_ts... >	arguments
	Stores the arguments.
friend	base_type
	Befriend the base class so it can call impl().
friend	derived_type
	Befriend the derived_type so it can access private members if need be.

Detailed Description

template<template< typename, typename ... > typename view_type>
class seqan3::detail::adaptor_for_view_without_args< view_type >

Template for range adaptor closure objects that store no arguments and always delegate to the view constructor.

Template Parameters

view_type

The view type template.

Use this adaptor template when you always want to delegate to the view's constructor and you have no arguments. Since it's a one-line it's easier than specialising seqan3::detail::adaptor_base.

Example

(from include/seqan3/range/views/single_pass_input.hpp)

This is the signature of the view type template in namespace seqan3::detail:

template <std::ranges::view urng_t>
class single_pass_input_view : public std::ranges::view_interface<single_pass_input_view<urng_t>>
{

This is the definition of the range adaptor closure object, it will always delegate to the constructor: seqan3::detail::single_pass_input_view::single_pass_input_view():

namespace seqan3::views
{
inline constexpr auto single_pass_input = detail::adaptor_for_view_without_args<detail::single_pass_input_view>{};
 
} // namespace seqan3::views

Member Function Documentation

impl()

template<template< typename, typename ... > typename view_type>

template<typename ... arg_types>

static auto seqan3::detail::adaptor_for_view_without_args< view_type >::impl ( arg_types &&...  args )

inlinestaticprivate

Call the view's constructor with the given arguments (all of the base class'es operators ultimately resolve to this function call).

Template Parameters

arg_types

The arguments to the view (this first one will be a range, the rest is optional).

Parameters

[in]

args

The arguments to the constructor.

Returns

An instance of view_type.

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The documentation for this class was generated from the following file:

• seqan3/range/views/detail.hpp