seqan3::detail::is_char_type< char_v > Struct Template Reference

Parse condition that checks if a given value is equal to char_v. More...

#include <seqan3/utility/char_operations/predicate_detail.hpp>

Inheritance diagram for seqan3::detail::is_char_type< char_v >:

Public Types
using	base_t = char_predicate_base< is_char_type< char_v > >
	The base type.
using	data_t = constexpr_pseudo_bitset< 257 >
	Type of the data field; as soon as std::bitset is fully constexpr, use that instead!

Public Member Functions
Requirements for seqan3::detail::char_predicate
You can expect the variable and the predicate function on all types that satisfy seqan3::output_stream_over.
bool	operator() (char_type c)
	predicate function to test if c satisfies the given condition. More...
Logical operators
Adds logical operators to allow logical disjunction, conjunction and negation on parse conditions.
constexpr auto	operator|| (rhs_t const &) const
	Combines the result of two seqan3::detail::char_predicate via logical disjunction.
constexpr auto	operator! () const
	Return a new condition with all bits flipped.
Function call operator
constexpr bool	operator() (value_t const val) const noexcept
	Invokes the condition on val.
Output functions
std::string	message () const
	Returns the message representing this condition as std::string.

Static Public Attributes
static constexpr data_t	data
	The look-up table that is used to evaluate the input. More...
static const std::string	msg
	The message representing this condition. More...

Related Functions
(Note that these are not member functions.)
template<char op, typename condition_head_t , typename ... condition_ts>
const std::string	condition_message_v
	Defines a compound std::string consisting of all given conditions separated by the operator-name op. More...

Detailed Description

template<int char_v>
struct seqan3::detail::is_char_type< char_v >

Parse condition that checks if a given value is equal to char_v.

Template Parameters

char_v

non-type template parameter with the value that should be checked against.

Member Function Documentation

operator()()

bool operator() ( char_type  c )

inherited

predicate function to test if c satisfies the given condition.

Parameters

c	The character to be tested.

Returns

true on success, false otherwise.

Attention

This is a concept requirement, not an actual function (however types satisfying this concept will provide an implementation).

Member Data Documentation

data

template<int char_v>

constexpr data_t seqan3::detail::is_char_type< char_v >::data

staticconstexpr

Initial value:

= [] () constexpr
    {
        data_t ret{};
 
        if (char_v == EOF)
            ret[256] = true;
        else
            ret[static_cast<uint8_t>(char_v)] = true;
 
        return ret;
    }()

The look-up table that is used to evaluate the input.

msg

template<int char_v>

const std::string seqan3::detail::is_char_type< char_v >::msg

inlinestatic

Initial value:

= std::string{"is_char<'"}                                     +
                                          ((char_v == EOF) ? std::string{"EOF"} : std::string{char_v}) +
                                          std::string{"'>"}

The message representing this condition.

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

• seqan3/utility/char_operations/predicate_detail.hpp