Add the 0-255 restrict, and fix the jump-back commands (I hope.)
Chris Pressey
8 years ago
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Don't expect this interpreter to work on the example programs supplied with
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the specification.
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There are two bugs/shortcomings that should really be fixed someday:
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* Integers on the stack can be any value supported by Python, rather
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than limited to the range 0-255.
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* The instructions that skip back, probably skip back the wrong amount.
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Other than those two things, this interpreter seems to have the same behaviour
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as Catatonic Porpoise's interpreter. Could use some test cases, though.
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This interpreter seems to have the same behaviour as
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[Catatonic Porpoise's Beatnik interpreter][]. This repository could stand
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to contain some test cases, though.
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`beatnik.py` also takes a `--debug` flag, which dumps some internal state
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to standard error as the program is run.
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[Beatnik]: http://esolangs.org/wiki/Beatnik
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[wimpmode]: http://esolangs.org/wiki/Wimpmode
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[Catatonic Porpoise's Beatnik interpreter]: http://esoteric.voxelperfect.net/files/beatnik/impl/BEATNIK.c
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sys.stderr.write("\n")
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class Stack(object):
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def __init__(self):
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self._stack = []
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def push(self, value):
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self._stack.append(value % 256)
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def append(self, value):
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"""for backwards compatibility"""
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self.push(value)
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def pop(self):
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return self._stack.pop()
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def main(args):
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global DEBUG
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tokenize = False
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words.append('FOXY') # stop if you get to the end
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stack = []
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stack = Stack()
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pc = 0
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done = False
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pc += dist
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elif value == 15:
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a = stack.pop()
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pc += 1
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dist = scrabble(words[pc])
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dist = scrabble(words[pc + 1])
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if a == 0:
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pc -= dist
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elif value == 16:
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a = stack.pop()
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pc += 1
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dist = scrabble(words[pc])
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dist = scrabble(words[pc + 1])
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if a != 0:
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pc -= dist
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elif value == 17:
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