Description:

This struct holds static arrays of pointers to sample values. The arrays are used with helper class Calculus to denote accepted "function signatures" when* initializing column FunctionEntry::Signature of table Calculus::Functions .

Each static field of this class represents a permutation of function arguments. Note, that only those permutations which are needed and used by the built-in compiler plugins ( Arithmetics , Math , Strings and DateAndTime ) are contained here.

Custom compiler plug-ins may use the argument signatures given here, if a fitting signature is already included. Otherwise a custom signature array has to be defined, initialized and provided to the function definition table.

Definition at line 316 of file expressions.hpp.

#include <expressions.hpp>

Collaboration diagram for Signatures:

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Public Static Field Index:
static ALIB_API Box *	B [1] = { &Types::Boolean }
	Function accepts one boolean argument.

static ALIB_API Box *	BB [2] = { &Types::Boolean , &Types::Boolean }
	Function accepts two boolean arguments.

static ALIB_API Box *	D [1] = { &Types::DateTime }
	Function accepts a DateTime argument.

static ALIB_API Box *	DDur [2] = { &Types::DateTime , &Types::Duration }
	Function accepts a DateTime argument; followed by a Duration .

static ALIB_API Box *	Dur [1] = { &Types::Duration }
	Function accepts a Duration argument.

static ALIB_API Box *	F [1] = { &Types::Float }
	Function accepts one floating point argument.

static ALIB_API Box *	FF [2] = { &Types::Float , &Types::Float }
	Function accepts two floating point arguments.

static ALIB_API Box *	I [1] = { &Types::Integer }
	Function accepts one integral argument.

static ALIB_API Box *	II [2] = { &Types::Integer , &Types::Integer }
	Function accepts two integral arguments.

static ALIB_API Box *	IVar [2] = { &Types::Integer , nullptr }
	Function accepts one integral argument, followed by variadic arguments.

static ALIB_API Box *	S [1] = { &Types::String }
	Function accepts one string argument.

static ALIB_API Box *	SI [2] = { &Types::String , &Types::Integer }
	Function accepts one string argument, followed by an integral argument.

static ALIB_API Box *	SII [3] = { &Types::String , &Types::Integer , &Types::Integer }
	Function accepts one string argument, followed by two integral arguments.

static ALIB_API Box *	SS [2] = { &Types::String , &Types::String }
	Function accepts two string arguments.

static ALIB_API Box *	SSB [3] = { &Types::String , &Types::String , &Types::Boolean }
	Function accepts two string arguments, followed by a boolean argument.

static ALIB_API Box *	SSI [3] = { &Types::String , &Types::String , &Types::Integer }
	Function accepts two string arguments, followed by an integral argument.

static ALIB_API Box *	SSS [3] = { &Types::String , &Types::String , &Types::String }
	Function accepts three string arguments.

static ALIB_API Box *	SVar [2] = { &Types::String , nullptr }
	Function accepts one string argument, followed by variadic arguments.

static ALIB_API Box *	Var [1] = { nullptr }
	Function accepts variadic arguments.