QuineFuck

QuineFuck is an esolang invented by User:None1.

Syntax

QuineFuck is brainfuck, but every character that is ignored in brainfuck prints itself

Example Programs

Cat

,[.,]

Hello World

Hello World!

Quine

Quine

Quine 2

Fuck!

Interpreter

Adapted from a normal brainfuck interpreter by 5anz (talk) with the goal of typing it in python without arrays.

That's also why the exec() function is everywhere

def cell(n):
    if n >= 0:
        return "cell" + str(n)
    else:
        return "cell_" + str(-n)
    
print("Please enter brainfuck code")
code = input()
stack = 0
inp = False

for char in range(len(code)):
    if code[char] == "[":
        stack += 1
        exec("stack" + str(stack) + " = " + str(char))
    elif code[char] == "]":
        exec("past = stack" + str(stack))
        stack -= 1
        exec("char" + str(past) + " = " + str(char))
        exec("char" + str(char) + " = " + str(past))
    elif code[char] == ",":
       inp = True
       
if inp:
    print("Please enter the input to said brainfuck code")
    inp = input()

print("==========================================================================")

ip = 0
inpp = 0
ap = 0
cell0 = 0
cellMin = -1
cellMax = 1

while ip < len(code):
    func = code[ip]
    if func == "+":
        exec(cell(ap) + " = (" + cell(ap) + " + 1) % 256")
    elif func == "-":
        exec(cell(ap) + " = (" + cell(ap) + " - 1) % 256")
    elif func == "<":
        ap -= 1
        if ap == cellMin:
            exec(cell(ap) + " = 0")
            cellMin -= 1
    elif func == ">":
        ap += 1
        if ap == cellMax:
            exec(cell(ap) + " = 0")
            cellMax += 1
    elif func == ".":
        exec("print(chr(" + cell(ap) + "), end = )")
    elif func == ",":
        if inpp == len(inp):
            exec(cell(ap) + " = 0")
        else:
            exec(cell(ap) + " = ord(inp[inpp])")
            inpp += 1
    elif func == "[":
        exec("if " + cell(ap) + " == 0: ip = char" + str(ip))
    elif func == "]":
        exec("if " + cell(ap) + " != 0: ip = char" + str(ip))
    else:
        print(func, end = "")
    ip += 1