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from front.lexer import Lexer
from front.parser import Parser
def main():
source = '''fun fib[a]
if a < 2
@1
end
@( call fib[a-1] + call fib[a-2] )
end
# main function
fun main[]
sum = 0
i = 0
while (i < 10)
sum = sum + call fib[i]
i = i + 1
end
@sum
end'''
print Parser(Lexer(source)).parse()
if __name__ == "__main__":
main()
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