seqan3::printer_order< printer_templates_t > Struct Template Reference

The printer_order is a variadic template that defines the order of the printers. More...

#include <seqan3/core/debug_stream/default_printer.hpp>

Inheritance diagram for seqan3::printer_order< printer_templates_t >:

Protected Types
template<typename stream_t , typename arg_t , size_t i = find_index<stream_t, arg_t, printer_templates_t<arg_t>...>()>
using	printer_for_t = std::tuple_element_t< i, std::tuple< printer_templates_t< arg_t >..., no_printer_found > >
	The type of the printer that can print the argument to the stream.

Static Protected Member Functions
template<typename stream_t , typename arg_t , typename... printers_t>
static constexpr size_t	find_index ()
	Find the index of the first printer that can print the argument.

Detailed Description

template<template< typename > typename... printer_templates_t>
struct seqan3::printer_order< printer_templates_t >

The printer_order is a variadic template that defines the order of the printers.

The printer_order is a variadic template that defines the order of the printers. It is used to find the first valid printer among all given printers that can print the argument to the given stream. The printer_order is used by the seqan3::default_printer.

Template Parameters

printer_templates_t

The printer class templates that are used to print the arguments.

Member Typedef Documentation

printer_for_t

template<template< typename > typename... printer_templates_t>

template<typename stream_t , typename arg_t , size_t i = find_index<stream_t, arg_t, printer_templates_t<arg_t>...>()>

using seqan3::printer_order< printer_templates_t >::printer_for_t = std::tuple_element_t<i, std::tuple<printer_templates_t<arg_t>..., no_printer_found> >

protected

The type of the printer that can print the argument to the stream.

In case no valid printer is found for the argument and stream type the seqan3::no_printer_found is used.

Template Parameters

stream_t	The type of the stream.
arg_t	The type of the argument.
i	The index of the printer that can print the argument (default initialised to the index of the printer in the list that can print the argument to the stream).

Member Function Documentation

find_index()

template<template< typename > typename... printer_templates_t>

template<typename stream_t , typename arg_t , typename... printers_t>

static constexpr size_t seqan3::printer_order< printer_templates_t >::find_index ( )

inlinestaticconstexprprotected

Find the index of the first printer that can print the argument.

Template Parameters

stream_t	The type of the stream.
arg_t	The type of the argument.
printers_t	The printer class templates that are used to print the arguments.

Returns

The index of the printer that can print the argument or n, where n is equal to the number of printers, if no printer was found.

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

• default_printer.hpp