Skip to contents

Create a BASIC Computer

Source: R/basic.R
basic.Rd

Create a BASIC Computer

Usage

create_basic(registers, functions, increment = 1, regex = "[, \\+]+")

Arguments

registers

A list of registers

functions

A list of functions. Registers can be referred to with self[[register_name]]. They must have two arguments, x and y, even if only one is used. The index is iterated with private$.inc(j) where j is the number of places to "jump." Example: \(x, y) private$.inc(self[[x]]) will increment self$index by self[[x]].

increment

(Default: 1) The number of places to increment by default.

regex

(Default: "[, \\+]+") The pattern to use for stringr::str_split

Value

A new R6 object with registers and functions as the fields and methods, respectively. Along with the functions detailed in the details section.

Details

try_numeric(x) : Takes input and tries to cast it as numeric. If that fails, it returns the original object.

val_or_index(x) : If x is numeric, return x, otherwise return self[[x]].

call(f, x, y) : Calls one of functions using x and y as arguments. There are two ways the function can be used:

  • f is not length one and x and y are null, then f[1](f[2], f[3])

  • f is length one, and x and y are not null, then f(x, y)

run(x, target, until, pattern) : Tries to run the instructions provided by x. If x is a character vector, it will try to split the instructions into a segments for call(f, x, y).

  • x: A character vector of instructions as c("f x y") or a list of character vectors in the format list(c("f", "x", "y"))

  • target: (Default: NULL) The register to print as the final result. If NULL, self will be printed.

  • pattern: See the regex argument for more details.

.inc(increment) : A private function used to increment self$index by increment.