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()