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main.py
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main.py
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#!python3
from Lexer import *
from Parser import *
from Interpreter import *
import sys
def main():
if len(sys.argv) == 2:
file = open(sys.argv[1],'r')
source = file.read()
lexer = Lexer(source)
parser = Parser(lexer)
interpreter = Interpreter(parser)
result = interpreter.interpret()
print(result)
else:
print("SHELL MODE: still you need to type the whole program in a single line!")
while True:
try:
text = input('>>> ')
except EOFError:
break
if not text:
continue
lexer = Lexer(text)
parser = Parser(lexer)
interpreter = Interpreter(parser)
result = interpreter.interpret()
print(result)
if __name__ == '__main__':
main()