A class representing a Qore function. More...

Inheritance diagram for Qore::Reflection::Function:

Public Member Methods
auto	call (...)
	calls the function with the given arguments More...

auto	callArgs (*softlist< auto > argv)
	calls the given function with the given arguments as a list More...

	constructor (string path)
	Creates the function from the name or namespace-justified path supplied as an argument. More...

FunctionVariant	getVariant (...)
	Returns the given direct child function variant declared in this function or throws an exception if the function variant is not defined. More...

FunctionVariant	getVariantArgs (softlist< Type > argv)
	Returns the given direct child function variant declared in this function or throws an exception if the function variant is not defined. More...

list< FunctionVariant >	getVariants ()
	returns the variants implemented by the function More...

Public Member Methods inherited from Qore::Reflection::AbstractReflectionFunction
	constructor ()
	Throws an exception if called directly; this class can only be instantiated by builtin subclasses. More...

string	getName ()
	returns the function or method name More...

bool	isBuiltin ()
	returns True if the function or method is a builtin function or method More...

bool	isEqual (AbstractReflectionFunction func)
	Returns True if the function or method object passed as an argument is equal to the current object; False if not. More...

bool	isInjected ()
	returns True if the function or method has been injected as a dependency injection More...

bool	isMethod ()
	returns True if the object is a method but not a pseudo-method More...

bool	isPseudoMethod ()
	returns True if the object is a pseudo-method More...

bool	isUser ()
	returns True if the function or method is a user function or method More...

int	numVariants ()
	returns the number of variants implemented by the function or method More...

Static Public Member Methods
static list< Function >	findAllRegex (string pattern, *int re_opts)
	Returns a list of functions matching the regular expression pattern argument or an empty list if no functions match. More...

static list< Function >	findAllRegex (Program pgm, string pattern, *int re_opts)
	Returns a list of functions matching the regular expression pattern argument or an empty list if no functions match. More...

static Function	forName (string path)
	Returns a Function object from the function name or namespace-justified path as a string. More...

static Function	forName (Program pgm, string path)
	Returns a Function object from the function name or namespace-justified path as a string. More...

Detailed Description

A class representing a Qore function.

Restrictions:: Qore::PO_NO_REFLECTION

Since: Qore 0.9.0

Member Function Documentation

◆ call()

auto Qore::Reflection::Function::call ( ... )

calls the function with the given arguments

Example:: auto v = f.call(arg1, arg2);

Parameters

...	optional arguments to the function

Returns: the return value of the function call

Exceptions

PROGRAM-ERROR thrown if the Program object holding the function has been destroyed

See also: callArgs()

◆ callArgs()

auto Qore::Reflection::Function::callArgs ( *softlist< auto > argv )

calls the given function with the given arguments as a list

Example:: auto v = f.callArgs(argv);

Parameters

argv	optional arguments to the function

Returns: the return value of the function call

Exceptions

PROGRAM-ERROR thrown if the Program object holding the function has been destroyed

See also: call()

◆ constructor()

Qore::Reflection::Function::constructor ( string path )

Creates the function from the name or namespace-justified path supplied as an argument.

Example:: Function f("Qore::printf");

Parameters

path	the function name or namespace-justified path as a string

Exceptions

UNKNOWN-FUNCTION	cannot find a function with the given name or path
ENCODING-CONVERSION-ERROR	this exception could be thrown if the string argument is not in the default character encoding and an error occurs during encoding conversion

See also: forName()

◆ findAllRegex() [1/2]

static list<Function> Qore::Reflection::Function::findAllRegex	(	string	pattern,
		*int	re_opts
	)

static

Returns a list of functions matching the regular expression pattern argument or an empty list if no functions match.

Code Flags:: RET_VALUE_ONLY

Example:: # return all accessible functions that start with the letter "g"
list<Function> l = Function::findAllRegex("^gg");

Parameters

pattern	the regular expression pattern to match
re_opts	see Regular Expression Constants for possible values

Returns: a list of functions matching the regular expression pattern argument or an empty list if no functions match

◆ findAllRegex() [2/2]

static list<Function> Qore::Reflection::Function::findAllRegex	(	Program	pgm,
		string	pattern,
		*int	re_opts
	)

static

Returns a list of functions matching the regular expression pattern argument or an empty list if no functions match.

Code Flags:: RET_VALUE_ONLY

Example:: # return all accessible functions that start with the letter "g"
list<Function> l = Function::findAllRegex(pgm, "^gg");

Parameters

pgm	the Program object to search
pattern	the regular expression pattern to match
re_opts	see Regular Expression Constants for possible values

Returns: a list of functions matching the regular expression pattern argument or an empty list if no functions match

◆ forName() [1/2]

static Function Qore::Reflection::Function::forName ( string path )

static

Returns a Function object from the function name or namespace-justified path as a string.

Code Flags:: RET_VALUE_ONLY

Example:: Function f = Function::forName("Qore::printf");

Parameters

path	the function name or namespace-justified path as a string

Returns: a function object corresponding to the name or namespace-justified path provided as an argument

Exceptions

UNKNOWN-FUNCTION	cannot find a function with the given name or path
ENCODING-CONVERSION-ERROR	this exception could be thrown if the string argument is not in the default character encoding and an error occurs during encoding conversion

◆ forName() [2/2]

static Function Qore::Reflection::Function::forName	(	Program	pgm,
		string	path
	)

static

Returns a Function object from the function name or namespace-justified path as a string.

Code Flags:: RET_VALUE_ONLY

Example:: Function f = Function::forName(pgm, "Qore::printf");

Parameters

pgm	the Program object to search
path	the function name or namespace-justified path as a string

Returns: a function object corresponding to the name or namespace-justified path provided as an argument

Exceptions

UNKNOWN-FUNCTION	cannot find a function with the given name or path
ENCODING-CONVERSION-ERROR	this exception could be thrown if the string argument is not in the default character encoding and an error occurs during encoding conversion

◆ getVariant()

FunctionVariant Qore::Reflection::Function::getVariant ( ... )

Returns the given direct child function variant declared in this function or throws an exception if the function variant is not defined.

Code Flags:: RET_VALUE_ONLY

Example:: FunctionVariant v = n.getVariant(IntType, StringType);

Parameters

...	type arguments for the variant; types must be compatible for the search to be successful

Returns: given function variant or throws an exception if the function variant is not defined in this function

Exceptions

PROGRAM-ERROR	thrown if the Program object holding the function has been destroyed
RUNTIME-OVERLOAD-ERROR	thrown if the function variant cannot be matched to the given arguments
ENCODING-CONVERSION-ERROR	this exception could be thrown if the string argument is not in the default character encoding and an error occurs during encoding conversion

See also

getVariantArgs()
getExactVariant()
getExactVariantArgs()

◆ getVariantArgs()

FunctionVariant Qore::Reflection::Function::getVariantArgs ( softlist< Type > argv )

Returns the given direct child function variant declared in this function or throws an exception if the function variant is not defined.

Code Flags:: RET_VALUE_ONLY

Example:: FunctionVariant v = n.getVariantArgs((IntType, StringType));

Parameters

argv	type arguments for the variant; types must be compatible for the search to be successful

Returns: given function variant or throws an exception if the function variant is not defined in this function

Exceptions

PROGRAM-ERROR	thrown if the Program object holding the function has been destroyed
RUNTIME-OVERLOAD-ERROR	thrown if the function variant cannot be matched to the given arguments
ENCODING-CONVERSION-ERROR	this exception could be thrown if the string argument is not in the default character encoding and an error occurs during encoding conversion

See also

getVariant()
getExactVariant()
getExactVariantArgs()

◆ getVariants()

list<FunctionVariant> Qore::Reflection::Function::getVariants ( )

returns the variants implemented by the function

Code Flags:: RET_VALUE_ONLY

Example:: list<FunctionVariant> l = f.getVariants();

Returns: the variants implemented by the function

Exceptions

PROGRAM-ERROR thrown if the Program object holding the function has been destroyed

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

QC_Function.dox.h

Public Member Methods

Static Public Member Methods

Detailed Description

Member Function Documentation

◆ call()

◆ callArgs()

◆ constructor()

◆ findAllRegex() [1/2]

◆ findAllRegex() [2/2]

◆ forName() [1/2]

◆ forName() [2/2]

◆ getVariant()

◆ getVariantArgs()

◆ getVariants()