module: Main
    import: os
    function: main
        return_type: void
        body:
            // 合法
            declare b1: byte = 127b
            declare s1: short = 32767s
            declare i1: int = 2147483647
            declare l1: long = 9223372036854775807L

            // 溢出（都应该收集到错误）
            declare b2: byte = 128b
            declare s2: short = 40000s
            declare i2: int = 3000000000
            declare l2: long = 9223372036854775808L
        end body
    end function
end module