RL: reload a function in a package from its source folder

In MotusWTS/motusServer: Operate a server to process data for http://motus.org

reload a function in a package from its source folder

Description

Not for final package distribution: this is a kludge to avoid having to rebuild the whole package just to propagate a change in a single function.

Usage

RL(f, path = NULL, package = NULL)

Arguments

f	unquoted name of function
path:	path to source file containing new definition for f; Default is to run find starting at the user's home directory, looking for a file called paste0(substitute(f), ".R")
package:	name of package to which f belongs. Defaults to the first package returned by getAnywhere(f)

Details

Here's what RL(f) does:

• the file path is sourced into an empty environment E

• for each symbol S in E:

  • if S is a function, set its binding environment to namespace:PACKAGE

  • unlock the binding for S in namespace:PACKAGE

  • bind S to E$S in namespace:PACKAGE

  • lock the binding for S in namespace:PACKAGE

  • if S is bound in package:PACKAGE:

    • unlock the binding for S in package:PACKAGE

    • bind S to E$S in package:PACKAGE

    • lock the binding for S in package:PACKAGE

where PACKAGE stands for the value of package.

Author(s)

John Brzustowski jbrzusto@REMOVE_THIS_PART_fastmail.fm

MotusWTS/motusServer documentation built on Dec. 3, 2024, 10:47 a.m.