Please write the ocaml code for this problem, and use the skeletal code. Thank you!

let is_const (t: token) : bool =

raise ImplementMe

let is_first_val (t: token) : bool =

raise ImplementMe

We've written a function is op: token -> bool that returns true if and only if the provided token is an operator. Write two similar functions: (a) is_const : token -> bool should return true if and only if the provided token is a constant (see the nonterminal const of the grammar). (b) is_first_val: token -> bool should return true if and only if the provided token is in FIRST(value). We've written a function is op: token -> bool that returns true if and only if the provided token is an operator. Write two similar functions: (a) is_const : token -> bool should return true if and only if the provided token is a constant (see the nonterminal const of the grammar). (b) is_first_val: token -> bool should return true if and only if the provided token is in FIRST(value)