Write a MIPS Assembly program to do the following:

Checking validity of an expression based on Matlab syntax

You are supposed to write a MIPS program which checks for validity of a user-inputted expression via I/O window. The syntax for the expression should follow Matlab rules. Your program should display the prompt >>> for entering an expression of up to 64 symbols. Expressions should include only parentheses, digits from 0 to 9, and letters from a to z (both upper and lower cases), operators +, -, *, /, and =. If there is error in an expression, display Invalid input in the I/O window; if there is no error, display Valid input in the I/O window.

Your program should loop so that users can enter new expressions without re-assembling the program. Your code should be commented.