rust language:

fill in the following the code

Thank you

The program argument is a filename. Your program will read the file and print all of the tokens that it finds. Specifically, your program should be able to detect the following tokens + Plus >Minus *Star Slash = -> Equal LeftParen RightParen ; -> SemiColorn -> Comma For example, with the following input file Your program should produce the following output: Plus Minus Star Slash Note, your program should skip any whitespace characters that you see (see is_whitespace), and it should stop if it encounters an unknown character. For example, with the following input file (note the spaces between each symbol) Your program should output: Plus Minus