ParameterAcceptorProxy< SourceClass > Class Template Reference

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

Inheritance diagram for ParameterAcceptorProxy< SourceClass >:

Public Member Functions
template<typename... Args>
	ParameterAcceptorProxy (const std::string section_name, Args...args)
virtual void	declare_parameters (ParameterHandler &prm) override
virtual void	parse_parameters (ParameterHandler &prm) override
Public Member Functions inherited from ParameterAcceptor
	ParameterAcceptor (const std::string &section_name="")
virtual	~ParameterAcceptor () override
std::string	get_section_name () const
std::vector< std::string >	get_section_path () const
template<class ParameterType >
void	add_parameter (const std::string &entry, ParameterType &parameter, const std::string &documentation=std::string(), ParameterHandler &prm_=prm, const Patterns::PatternBase &pattern=*Patterns::Tools::Convert< ParameterType >::to_pattern())
void	enter_my_subsection (ParameterHandler &prm)
void	leave_my_subsection (ParameterHandler &prm)
Public Member Functions inherited from Subscriptor
	Subscriptor ()
	Subscriptor (const Subscriptor &)
	Subscriptor (Subscriptor &&) noexcept
virtual	~Subscriptor ()
Subscriptor &	operator= (const Subscriptor &)
Subscriptor &	operator= (Subscriptor &&) noexcept
void	subscribe (const char *identifier=nullptr) const
void	unsubscribe (const char *identifier=nullptr) const
unsigned int	n_subscriptions () const
template<typename StreamType >
void	list_subscribers (StreamType &stream) const
void	list_subscribers () const
template<class Archive >
void	serialize (Archive &ar, const unsigned int version)

Additional Inherited Members
Static Public Member Functions inherited from ParameterAcceptor
static void	initialize (const std::string &filename="", const std::string &output_filename="", const ParameterHandler::OutputStyle output_style_for_prm_format=ParameterHandler::ShortText, ParameterHandler &prm=ParameterAcceptor::prm)
static void	initialize (std::istream &input_stream, ParameterHandler &prm=ParameterAcceptor::prm)
static void	clear ()
static void	parse_all_parameters (ParameterHandler &prm=ParameterAcceptor::prm)
static void	declare_all_parameters (ParameterHandler &prm=ParameterAcceptor::prm)
Static Public Member Functions inherited from Subscriptor
static::ExceptionBase &	ExcInUse (int arg1, std::string arg2, std::string arg3)
static::ExceptionBase &	ExcNoSubscriber (std::string arg1, std::string arg2)
Public Attributes inherited from ParameterAcceptor
boost::signals2::signal< void()>	declare_parameters_call_back
boost::signals2::signal< void()>	parse_parameters_call_back
Static Public Attributes inherited from ParameterAcceptor
static ParameterHandler	prm
Protected Attributes inherited from ParameterAcceptor
const std::string	section_name

Detailed Description

template<class SourceClass>
class ParameterAcceptorProxy< SourceClass >

A proxy ParameterAcceptor wrapper for classes that have a static member function declare_parameters, and a non virtual parse_parameters method.

If you cannot or do not want to derive your "parameter accepting" class from ParameterAcceptor, for example if by design you are required to have a static member function declare_parameters and a member parse_parameters, or if someone has already implemented such a class for you, and only provides you with an API that you cannot modify, then you may be able to use ParameterAcceptor facilities nonetheless, by wrapping your class into ParameterAcceptorProxy.

This class implements the public interface of ParameterAcceptor, and at the same time it derives from the template class SourceClass, allowing you to register your existing SourceClass as a ParameterAcceptor class, without requiring you to explicitly derive your SourceClass from ParameterAcceptor.

An example usage is given by the following snippet of code, using Functions::ParsedFunction as an example source class:

ParameterAcceptorProxy<Functions::ParsedFunction<2> > fun("Some function");
ParameterAcceptor::initialize("test.prm");

The above snippet of code will initialize ParameterAcceptor::prm with a section "Some function", and will correctly parse and assign to the object fun the expression parsed from the file test.prm. If non-existent, the program will exit, and generate it for you (here you can see the resulting short text version of the parameter file generated with the above snippet):

# Parameter file generated with
# DEAL_II_PACKAGE_VERSION = 9.0.0-pre
subsection Some function
  set Function constants  =
  set Function expression = 0
  set Variable names      = x,y,t
end

The resulting fun object, is both a ParsedFunction object and a ParameterAcceptor one, allowing you to use it as a replacement of the ParsedFunction class, with automatic declaration and parsing of parameter files.

See the tutorial program step-60 for an example on how to use this class.

Author

Luca Heltai, 2018

Definition at line 597 of file parameter_acceptor.h.

Constructor & Destructor Documentation

template<class SourceClass >

template<typename... Args>

ParameterAcceptorProxy< SourceClass >::ParameterAcceptorProxy	(	const std::string	section_name,
		Args...	args
	)

Default constructor. The argument section_name is forwarded to the constructor of the ParameterAcceptor class, while all other arguments are passed to the SourceClass constructor.

Definition at line 643 of file parameter_acceptor.h.

Member Function Documentation

template<class SourceClass >

void ParameterAcceptorProxy< SourceClass >::declare_parameters ( ParameterHandler &  prm )

overridevirtual

Overloads the ParameterAcceptor::declare_parameters function, by calling SourceClass::declare_parameters with prm as an argument.

Reimplemented from ParameterAcceptor.

Definition at line 654 of file parameter_acceptor.h.

template<class SourceClass >

void ParameterAcceptorProxy< SourceClass >::parse_parameters ( ParameterHandler &  prm )

overridevirtual

Overloads the ParameterAcceptor::parse_parameters function, by calling SourceClass::parse_parameters with prm as an argument.

Reimplemented from ParameterAcceptor.

Definition at line 663 of file parameter_acceptor.h.

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

• deal.II/base/parameter_acceptor.h