#BFK-Clojure

--A Brain Fxck Interpreter on clojure seqs

Unlike other brain fxck interpreters, bfk-clojure is an embedded toolbox, aimming at using brainfxck to proceed existing datas, not programming in pure brainfxck.

###Seq Processing: bfk-clojure provides three functions to proceed a clojure seq: brainfk, bfk-proceed and bfk-spawn

• bfk-spawn is a function works like the original brainfxck language,

it takes a seq as a brainfxck machine, and a string as an brainfxck expression, evaluating the expression on the seq and collect each output (using brainfxck cmd '.') into a list.

e.g

(bfk-spawn [1 2 3 4 a b c d] ".>>++.>>.")

;=> (1 5 a)

(->> (bfk-spawn [65 97 32 10] "+++++++.>++++.+++++++..+++.>.<<+++++++++++++++.>.+++.------.--------.>+.>.") (map char) (apply str))

;=> "Hello World!\n"

• bfk-proceed is a function to process existing clojure seq,

it takes a seq as a brainfxck machine, and a string as an brainfxck expression, evaluating the expression on the seq and returns a new seq as the result.

e.g

(bfk-proceed [0] "++")

;=> (2)

(bfk-proceed [1 2 3] ">+>++")

;=> (1 3 5)

(bfk-proceed [0] ">>+++")

;=> (0 0 3)

(bfk-proceed [1 1 1 1 1] ">[+>>]")

;=> (1 2 1 2 1 0)

• brainfk is a function provides the features of both bfk-proceed and bfk-spawn

e.g

(brain-phucker/brainfk [10] "[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++++.>.+++.------.--------.>+.>.")

;=> {:result (0 87 100 33 10), :output (72 101 108 108 111 32 87 111 114 108 100 33 10)}

###String Processing:

• all the functions works on string as well,

e.g

(brain-phucker/bfk-proceed "teststring" "[-------------------------------->]")

;=> "TESTSTRING"

(brain-phucker/bfk-proceed "teststring" "[-------------------------------->>]")

;=> "TeStStRiNg"

(brain-phucker/bfk-proceed "teststring" "[-------------------------------->>>]")

;=> "TesTstRinG"

###Introduction To Brain Fxck Language

Brain Fxck is a minimize language with 8 commands, which runs on a machine containing an array and a pointer, the pointer is initially pointing at the 0th element

The 8 commands are:

• + increases the value of the element pointed
• - decreases the value of the element pointed
• > move the pointer right by an element
• < move the pointer right by an element
• . output the value of the element pointed
• , input as the value of the element pointed
• The ',' command is not included in this version of bfk-clojure