An experimental implementation of R

cargo run

# R version 0.0.1 -- "Why Not?"

x <- function(a = 1, ...) { a + c(...) }
# function(a = 1, ...) {
#   a + c(...)
# }
# <environment 0x6000005b8e28>

y <- function(...) x(...)
# function(...) x(...)
# <environment 0x6000005b8e28>

y(4, 3, 2, 1)
# [1] 7 6 5 

This amounts to (most) of R's grammar parsing, basic primitives, scope management and ellipsis argument passing.

First and foremost, to learn - at this point, it is far too early to fixate on other goals.

Although these are distant goals, if the project ever builds any sort of momentum, I'd like for it to grow into a project that is the foundation of a successor language for R -- providing tooling to either port pure R code or provide a separate mode of operating to execute R code.

I welcome other contributors, but also have not thoughtfully selected a long- term license yet. For now there's a CLA in place so that the license can be altered later on. I don't intend to keep it around forever. If you have suggestions or considerations for selecting an appropriate license, your feedback would be much appreciated.