SCOMFunctionClass: Constructor for Simple S-COM definition

In omegahat/RDCOMServer: R-DCOM object server

Constructor for Simple S-COM definition

Description

This is the constructor function for defining a COM class in S that consists of a simple list of functions and properties that do not share state.

Unlike the SCOMIDispatch constructor, this definition does not have a generator function but instead re-uses the list of functions for each COM object that is created for this class. In this way, they cannot share state.

The properties are currently accessed as variables in the global environment and are specified simply as variable names. A variant of this class will allow them to be local to the object and specified as a list.

Usage

SCOMFunctionClass(functions, properties = character(0), name, help = "", def = new("SCOMFunctionClass"), where = "")

Arguments

functions	a named list of functions. The names are the externally accessible method names by which clients access functionality of objects of these classes.
properties	currently a character vector giving the names of S variables in the search path that can be accessed by clients.
name	the human-usable name of the COM class
help	a character vector giving description strings for each of the methods (and properties). Currently not used but will be in the future.
def	an instance of the target S class that is used to represent this definition. This is available as an argument to allow constructors for sub-classes to call this and supply their own instance to be populated with values.
where	currently unused but here for automatic registration.

Value

The def object with slots filled in.

Author(s)

Duncan Temple Lang <[e-mail]>

References

http://www.omegahat.org/RDCOMServer http://www.omegahat.org/SWinRegistry

See Also

SCOMIDispatch

omegahat/RDCOMServer documentation built on July 17, 2022, 7:25 p.m.