TIS-100P.py

class Node(object):
    def __init__(self, code):
        self.code = code.split('\n')
        self.line = 0
        self.pin = {'UP': None,
                    'DOWN': None,
                    'LEFT': None,
                    'RIGHT': None}
        self.pout = {'UP': None,
                     'DOWN': None,
                     'LEFT': None,
                     'RIGHT': None}
        self.acc = 0
        self.bak = 0
        self.last = None

    def label(self, lbl):
        for i, v in enumerate(code)
            if lbl == v:
                return i

    def arg(self, arg):
        try:
            return int(arg)
        except ValueError:
            if self.pin == 'ANY':
                for side in self.pin.keys():
                    v = self.pin[side]
                    if v:
                        self.pin[side] = None
                        return v
                self.line -= 1
                return None
            else:
                v = self.pin[arg]
                if v:
                    self.pin[arg] = None
                    return v
                else:
                    self.line -= 1
                    return None

    def send(self, value, port):

    def step(self):
        instr = self.code[self.line].split()[0]
        args = self.code[self.line].split()[1:]
        if instr == 'NOP' or instr[-1] == ':' or instr[0] == '#':
            self.line += 1
        elif instr == 'MOV':
            if args[1] == 'ACC':
                self.acc = self.arg(args[0])
            else:
                self.send(self.arg(args[0]), args[1])
            self.line += 1
        elif instr == 'SWP':
            a = self.bak
            self.bak = self.acc
            self.acc = a
            self.line += 1
        elif instr == 'SAV':
            self.bak = self.acc
            self.line += 1
        elif instr == 'ADD':
            self.acc = self.acc + self.arg(args[0])
            self.line += 1
        elif instr == 'SUB':
            self.acc = self.acc - self.arg(args[0])
            self.line += 1
        elif instr == 'NEG':
            self.acc = -self.acc
            self.line += 1
        elif instr == 'JMP':
            self.line = self.label(args[0])
            self.line += 1
        elif instr == 'JEZ':
            if self.acc == 0:
                self.line = self.label(args[0])
        elif instr == 'JNZ':
            if self.acc ~= 0:
                self.line = self.label(args[0])
        elif instr == 'JGZ':
            if self.acc > 0:
                self.line = self.label(args[0])
        elif instr == 'JLZ':
            if self.acc < 0:
                self.line = self.label(args[0])
        elif instr == 'JRO':
            self.line += self.arg(args[0])
            if self.line < 0: self.line = 0
            if self.line > len(self.code) - 1: self.line = len(self.code) - 1
        elif instr == 'HCF':
            import sys
            sys.exit(1)