Arguments (System function)

The arguments passed to this request (System class)

The Arguments shared function returns the arguments passed in the INCLUDE command for the procedure that contained the Begin statement for the current request.

Syntax

%string = %(System):Arguments

Syntax terms

%string	A string to receive the arguments passed on the INCLUDE command.
%(System)	The class name in parentheses denotes a shared method.

Usage Notes

• Arguments provides functionality similar to that provided by ?? dummy string arguments, with some important differences:
  • It is processed at evaluation time, not compile time.
  • The entire argument string is returned in one string, providing much more flexibility in how the argument list is parsed.
  • Arguments does not "eat" the arguments. That is, it can be invoked as often as you want, and it always returns the same values for a particular request invocation.
  • Arguments does not prompt the user for arguments if none were specified; it simply returns a null. This makes it possible for arguments to be optional.
  • Arguments makes request invocation arguments available to procedures Included by the outermost evaluating procedure.
• As shown in the "Examples" section, below, the Arguments method returns everything after the procedure name on the INCLUDE command, including any blanks or commas after the procedure name.
• Arguments is available in Sirius Mods Version 7.2 and later.

Examples

1. If procedure FOO contains the following:

   begin printText {~} = '{%(system):arguments}' end

   The requests (preceded by >) below produce the outputs shown on the line that follows the request:

   > I FOO This is a test %(system):arguments = ' This is a test' > I FOO,This is a test %(system):arguments = ',This is a test' > I FOO This is a test %(system):arguments = ' This is a test' > I FOO This,is,a,test %(system):arguments = ' This,is,a,test' > I FOO %(system):arguments = ''

2. Note that the same values, above, would be printed if FOO contained:

   begin i fooInner end

   and procedure FOOINNER contained:

   printText {~} = '{%(system):arguments}'

See also

System class	List of System methods	System methods syntax
Notation conventions for methods