Patterns::Tuple Class Reference

#include <deal.II/base/patterns.h>

Inheritance diagram for Patterns::Tuple:

Public Types
enum	OutputStyle { Machine , Text , LaTeX }

Public Member Functions
	Tuple (const std::vector< std::unique_ptr< PatternBase > > &patterns, const std::string &separator=":")
	Tuple (const std::vector< std::unique_ptr< PatternBase > > &patterns, const char *separator)
template<class... PatternTypes>
	Tuple (const std::string &separator, const PatternTypes &...patterns)
template<class... PatternTypes>
	Tuple (const char *separator, const PatternTypes &...patterns)
template<typename... Patterns>
	Tuple (const Patterns &...patterns)
	Tuple (const Tuple &other)
virtual bool	match (const std::string &test_string) const override
virtual std::string	description (const OutputStyle style=Machine) const override
virtual std::unique_ptr< PatternBase >	clone () const override
std::size_t	memory_consumption () const override
const PatternBase &	get_pattern (const unsigned int i) const
const std::string &	get_separator () const
template<class... PatternTypes>
	Tuple (const PatternTypes &...ps)

Static Public Member Functions
static std::unique_ptr< Tuple >	create (const std::string &description)

Private Attributes
std::vector< std::unique_ptr< PatternBase > >	patterns
const std::string	separator

Static Private Attributes
static const char *	description_init = "[Tuple"

Detailed Description

This pattern matches colon-separated values of arbitrary types. Each type has to match a pattern given to the constructor.

An example usage is the following:

std::vector< std::unique_ptr<Patterns::PatternBase> > ps;
 
ps.push_back(std::unique_ptr<Patterns::Integer>());
ps.push_back(std::unique_ptr<Patterns::Double>());
ps.push_back(std::unique_ptr<Patterns::Anything>());
 
Patterns::Tuple pattern(ps, ":");
 
bool check = ps.match("5 : 3.14 : Ciao"); // check = true

or, if you want to exploit ParameterHandler::add_parameter():

using T = std::tuple<std::string, Point<3>, unsigned int>;
 
T a = Patterns::Tools::Convert<T>::to_value("Ciao : 1.0, 2.0, 3.0 : 33");
 
ParameterHandler prm;
prm.add_parameter("A tuple", a);
 
prm.log_parameters(deallog);
// DEAL:parameters::A tuple: Ciao : 1.000000, 2.000000, 3.000000 : 33
 
prm.set("A tuple", "Mondo : 2.0, 3.0, 4.0 : 34");
prm.log_parameters(deallog);
// DEAL:parameters::A tuple: Mondo : 2.0, 3.0, 4.0 : 34
 
deallog << Patterns::Tools::Convert<T>::to_string(a) << std::endl;
// DEAL::Mondo : 2.000000, 3.000000, 4.000000 : 34

The constructor expects a vector of Patterns, and optionally a string specifying the separator to use when parsing the Tuple from a string.

The default separator is a colon, owing to the fact that a pair is in fact a tuple with two elements.

Definition at line 773 of file patterns.h.

Member Enumeration Documentation

OutputStyle

enum Patterns::PatternBase::OutputStyle

inherited

List of possible description output formats.

Capitalization chosen for similarity to ParameterHandler::OutputStyle.

Enumerator
Machine	Simple text suitable for machine parsing in the static public member functions for all of the built in inheriting classes. Preferably human readable, but machine parsing is more critical.
Text	Easily human readable plain text format suitable for plain text documentation.
LaTeX	Easily human readable LaTeX format suitable for printing in manuals.

Definition at line 100 of file patterns.h.

Constructor & Destructor Documentation

Tuple() [1/7]

Patterns::Tuple::Tuple	(	const std::vector< std::unique_ptr< PatternBase > > &	patterns,
		const std::string &	separator = ":"
	)

Constructor. Use a vector of unique pointers to Patterns to construct the tuple.

Parameters

patterns	The pattern each object of the Tuple should match
separator	An optional string used to delimit each element Constructor.

Definition at line 1071 of file patterns.cc.

Tuple() [2/7]

Patterns::Tuple::Tuple	(	const std::vector< std::unique_ptr< PatternBase > > &	patterns,
		const char *	separator
	)

Constructor. Same as above, specialized for const char *. This is necessary to avoid compilers errors due to the variadic constructors provided below.

Definition at line 1086 of file patterns.cc.

Tuple() [3/7]

template<class... PatternTypes>

Patterns::Tuple::Tuple	(	const std::string &	separator,
		const PatternTypes &...	patterns
	)

Constructor. Creates a Tuple from more than one class derived from PatternBase.

Parameters

separator	What separator to use.
patterns	The list of patterns to use

Definition at line 1426 of file patterns.h.

Tuple() [4/7]

template<class... PatternTypes>

Patterns::Tuple::Tuple	(	const char *	separator,
		const PatternTypes &...	patterns
	)

Constructor. This is needed to allow users to specify directly the separator without using ";".

Since we support a pure variadic templates version, without this specialization, the compiler will fail with cryptic errors.

Definition at line 1418 of file patterns.h.

Tuple() [5/7]

template<typename... Patterns>

Patterns::Tuple::Tuple

(

const Patterns &...

patterns

)

Constructor. Same as above, using the default separator.

Parameters

patterns

The list of patterns to use

Tuple() [6/7]

Patterns::Tuple::Tuple

(

const Tuple &

other

)

Copy constructor.

Definition at line 1093 of file patterns.cc.

Tuple() [7/7]

template<class... PatternTypes>

Patterns::Tuple::Tuple

(

const PatternTypes &...

ps

)

Definition at line 1442 of file patterns.h.

Member Function Documentation

match()

bool Patterns::Tuple::match ( const std::string &  test_string ) const

overridevirtual

Return true if the string is a list of strings each of which matches the patterns given to the constructor.

Implements Patterns::PatternBase.

Definition at line 1104 of file patterns.cc.

description()

std::string Patterns::Tuple::description ( const OutputStyle  style = Machine ) const

overridevirtual

Return a description of the pattern that valid strings are expected to match.

Implements Patterns::PatternBase.

Definition at line 1123 of file patterns.cc.

clone()

std::unique_ptr< PatternBase > Patterns::Tuple::clone ( ) const

overridevirtual

Return a copy of the present object, which is newly allocated on the heap. Ownership of that object is transferred to the caller of this function.

Implements Patterns::PatternBase.

Definition at line 1173 of file patterns.cc.

create()

std::unique_ptr< Tuple > Patterns::Tuple::create ( const std::string &  description )

static

Create a new object if the start of description matches description_init. Ownership of that object is transferred to the caller of this function.

Definition at line 1189 of file patterns.cc.

memory_consumption()

std::size_t Patterns::Tuple::memory_consumption ( ) const

overridevirtual

Determine an estimate for the memory consumption (in bytes) of this object.

Reimplemented from Patterns::PatternBase.

Definition at line 1180 of file patterns.cc.

get_pattern()

const PatternBase & Patterns::Tuple::get_pattern

(

const unsigned int

i

)

const

Return a reference to the i-th pattern in the tuple.

Definition at line 1237 of file patterns.cc.

get_separator()

const std::string & Patterns::Tuple::get_separator

(

)

const

Return the separator of the tuple entries.

Definition at line 1245 of file patterns.cc.

Member Data Documentation

patterns

std::vector<std::unique_ptr<PatternBase> > Patterns::Tuple::patterns

private

Copy of the patterns stored in the Tuple.

Definition at line 882 of file patterns.h.

separator

const std::string Patterns::Tuple::separator

private

Separator between elements of the list.

Definition at line 887 of file patterns.h.

description_init

const char * Patterns::Tuple::description_init = "[Tuple"

staticprivate

Initial part of description.

Definition at line 892 of file patterns.h.

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

• include/deal.II/base/patterns.h
• source/base/patterns.cc