Function opg::find_eq

pub(crate) fn find_eq(
    table: &mut OpTable, 
    productions: &Vec<Production>, 
    nts: &HashSet<String>
)

Find the equal operators

Input

table the mutable OpTable struct for output

productions the vector of struct Production

nts the non-terminal set, which could be generated from the function get_non_terminals().

Example

find_eq(&mut table, &productions, &nts);

Principles

Search the pattern of ..T1..T2.. and make T1=T2, notice that it is NOT indicate that T2=T1.