qwerty.py

'''Implementation of Qwerty esoteric programming language by Purah126
This code is in the public domain'''

import re

def qwerty(code):
    i = 0
    t = [0]
    c = 0
    h = {}
    s = []
    sm = False
    cm = re.findall('\(.*?\)', code)
    for x in cm:
        code = code.replace(x, '')
    rp = re.findall('/.*?/.*?/', code)
    for x in rp:
        y = x.split('/')
        code = code.replace(x, '')
        code = code.replace(y[1], y[2])
    if code.count('[') != code.count(']'):
        return 4
    def pop():
        if len(s) == 0:
            return 0
        else:
            return s.pop()
    while i < len(code):
        a = code[i]
        if sm == True:
            if a == '\\':
                i += 1
                s.append(ord(a))
            elif a == '"':
                sm = False
            else:
                s.append(ord(a))
        elif a == '`':
            s.reverse()
        elif a == '~':
            if len(s) > 0:
                s.append(s.pop(0))
        elif a == '!':
            try:
                print(chr(t[c]), end='')
            except ValueError:
                return 1
        elif a == '@':
            try:
                code[pop()] = chr()
            except IndexError:
                return 2
            except ValueError:
                return 1
        elif a == '#':
            if len(s) > 0:
                s.append(s[-1])
        elif a == '$':
            try:
                s.append(h[t[c]])
            except KeyError:
                return 3
        elif a == '%':
            t[c] = t[c] % pop()
        elif a == '^':
            t[c] = -t[c]
        elif a == '&':
            h[t[c]] = pop()
        elif a == '*':
            t[c] = t[c] * pop()
        elif a == '-':
            t[c] = t[c] - pop()
        elif a == '_':
            t[c] = (t[c] - 1)
        elif a == '=':
            if t[c] == pop():
                while code[i] != ']':
                    i += 1
        elif a == '+':
            t[c] = t[c] + pop()
        elif a == '{':
            if len(s) > 1:
                s.append(s.pop(-2))
        elif a == ']':
            d = 1
            while d > 0:
                i -= 1
                if code[i] == '[':
                    d -= 1
                if code[i] == ']':
                    d += 1
        elif a == '}':
            t[c] = len(s)
        elif a == '\\':
            t[c] = int(t[c] // pop())
        elif a == '|':
            print(t[c], end=' ')
        elif a == ';':
            s.append(t[c])
            t[c] = 0
        elif a == ':':
            t[c] = pop()
        elif a == '\'':
            t[c] = (t[c] + 1)
        elif a == '"':
            sm = True
        elif a == ',':
            c += 1
            if c == len(t):
                t += [0]
        elif a == '<':
            if t[c] < pop():
                while code[i] != ']':
                    i += 1
        elif a == '.':
            if c == 0:
                t = [0] + t
            else:
                c -= 1
        elif a == '>':
            if t[c] > pop():
                while code[i] != ']':
                    i += 1
        elif a == '?':
            s += [ord(x) for x in input()]
        i += 1
    return 0