example of decisiont tables for apostrophe logic

decision_tables.rs

let contraction_table = |w: &str| match 
    (contraction(w),pronoun(w),with_verb(w)) {
    (false         ,_         ,_           ) => "No Apostrophe",
    (true          ,true      ,true        ) => "Use Apostrophe",
    (true          ,false     ,_           ) => "Use Apostrophe",
    (true          ,true      ,false       ) => "No Apostrophe"
};

let possessive_table = |w: &str| match
    (possessive(w),is_it_it(w),is_or_has(w),name_ends_in_s(w),plural_name(w),ends_in_s(w)) {
    (false        ,_          ,_           ,_                ,_             ,_           ) => contraction_table(w),
    (true         ,true       ,true        ,_                ,_             ,_           ) => "Apostrophe + s",
    (true         ,true       ,false       ,_                ,_             ,_           ) => "No Apostrophe",
    (true         ,false      ,_           ,true             ,_             ,_           ) => "Apostrophe at end",
    (true         ,false      ,_           ,false            ,true          ,_           ) => "Apostrophe at end",
    (true         ,false      ,_           ,false            ,false         ,true        ) => "Apostrophe at end",
    (true         ,false      ,_           ,false            ,false         ,false       ) => "Apostrophe + s",
};

let plural_table = |w: &str| match
    (plural(w),single_letter(w),abbreviation(w)) {
    (false    ,_               ,_              ) => possessive_table(w),
    (true     ,true            ,_              ) => "Apostrophe + s",
    (true     ,false           ,true           ) => "Apostrophe + s",
    (true     ,false           ,false          ) => "No Apostrophe",
};