BrainfXX

BrainfXX is an esolang, or a family of 256 brainfuck subsets, invented by User:None1.

Commands

The name of each language is Brainf00 to BrainfFF, the last 2 characters are hex digits. When converted to binary, each digit means whether the corresponding bf command (0th,1st,2nd,3rd,4th,5th,6th,7th digits counting from the ones digit represent whether the +-><,.[] commands are usable, respectively) is usable. For example, in Brainf01, only the + command is usable, in BrainfBF, the [ command is unusable. Unusable commands are NOPs when executed.

Equivalents to other languages

Some members in this family are equivalent to other languages on this wiki:

• Brainf00=Nil/APLWSI
• Brainf01=+
• Brainf21=PlusOrOutput
• Brainf23=BittyLang
• BrainfFF=brainfuck

Interpreter in Python

By User:None1:

import sys
def bf(code,member_id): # Member ID: 2 hex digits, XX interprets BrainfXX member
    s1=[]
    s2=[]
    matches={}
    tape=[0]*1000000
    k='+-><,.[]'
    member_id=int(member_id,16)
    for i in range(8):
        if not(member_id&(1<<i)):
            code=code.replace(k[i],'')
    for i,j in enumerate(code):
        if j=='[':
            s1.append(i)
        if j==']':
            m=s1.pop()
            matches[m]=i
            matches[i]=m
    cp=0
    p=0
    while cp<len(code):
        if code[cp]=='+':
            tape[p]=(tape[p]+1)%256
        if code[cp]=='-':
            tape[p]=(tape[p]-1)%256
        if code[cp]==',':
            tape[p]=ord(sys.stdin.read(1))%256
        if code[cp]=='.':
            print(chr(tape[p]),end='')
        if code[cp]=='<':
            p-=1
        if code[cp]=='>':
            p+=1
        if code[cp]=='[':
            if not tape[p]:
                cp=matches[cp]
        if code[cp]==']':
            if tape[p]:
                cp=matches[cp]
        cp+=1
bf(sys.stdin.read(),'21') # Brainf21