leanify_r6 moves the content of an R6::R6Class's functions to an environment,
usually the package's namespace, to save space during serialization of R6 objects.
leanify_package move all methods of all R6 Classes to an environment.
The function in the class (i.e. the object generator) is replaced by a stump function that does nothing except calling the original function that now resides somewhere else.
It is possible to call this function after the definition of an R6::R6
class inside a package, but it is preferred to use leanify_package()
to just leanify all R6::R6 classes inside a package.
leanify_r6(cls, env = cls$parent_env)leanify_package(pkg_env = parent.frame(), skip_if = function(x) FALSE)
NULL.
(R6::R6Class)
Class generator to modify.
(environment)
The target environment where the function should be stored.
This should be either cls$parent_env (default) or one of its
parent environments, otherwise the stump function will not find the moved
(original code) function.
:: environment
The namespace from which to leanify all R6 classes. Does not have to be a
package namespace, but this is the intended usecase.
:: function
Function with one argument: Is called for each individual R6::R6Class.
If it returns TRUE, the class is skipped. Default function evaluating to FALSE
always (i.e. skipping no classes).