parse_R_helpers: Parse source code to get R helpers

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Parse source code to get R helpers

Description

Parse source code to get R helpers

Usage

parse_R_helpers(code, ...)

Arguments

code	the source code as a character vector
...	other objects to add in the environment of the returned functions

Details

Functions in code must be documented with roxygen2::roxygen2-package tags and only functions with the '@export' tag are returned.

Value

A list of functions from code plus an "help" function used to get function documentation.

Examples

{

code <- "
   a <- 2
   #' Set the 'a' value to use in the add_a function
   #'
   #' @param v a numeric value
   #'
   #' @return Does not return anything
   #'
   #' @export
   set_a <- function(v) a <<- v

   #' Add a 'a' value defined separately
   #'
   #' @param x a numeric value
   #'
   #' @return x + a
   #'
   #' @export
   add_a <- function(x) x + a

   #' Add a 'a' value defined separately to a b value made available
   #' in environment
   #'
   #'
   #' @return b + a
   #'
   #' @export
   add_a_to_b <- function() b + a
"
helpers <- parse_R_helpers(code, b=3)
helpers$help()
helpers$help("add_a")
helpers$add_a(3.5)
helpers$set_a(4)
helpers$add_a(3.5)
helpers$add_a_to_b()
helpers <- parse_R_helpers(code, b=6)
helpers$add_a_to_b()

}

TKCat documentation built on May 20, 2026, 1:07 a.m.