Write a recursive descent algorithm for a java while statement, a Javas if statement, an logical/mathematical expression based on the rules you created in your lexical analyzer, and a mathematical assignment statement, where statement may be an empty function. Supply the EBNF rule foreach.

*write a program that defines symbolic names for several string literals (chars between quotes). * use each symbolic name in a variable definition. * use of symbolic to compose the assembly code instruction set can perform vara = (vara - varb) + (varc - vard); ensure that variable is in unsigned integer data type. * you should also further enhance your symbolic logic block to to perform expression by introducing addition substitution rule. vara = (vara+varb) - (varc+vard).