Create jison grammar

[8150133]

I'm creating a jison grammar

I want that everytime user types for example List the parser returns Match because this is some king of database query generator...for example:

List Contracts
Where C.price Lesser 500
Return C.price, EntityE.name

And then the parser should return me:

MATCH (E1:ENTIDADE)-[C:CONTRATO]->(E2:ENTIDADE)
WHERE C.price < 500
RETURN C.price, E1.name

So far, this is my jison file:

/* lexical grammar */
%lex
%%

\s+                                 /* skip whitespace */
List                                return 'MATCH'
Contracts                           return '(E1:ENTIDADE)-[C:CONTRATO]->(E2:ENTIDADE)'
Where                               return 'WHERE'
EntityE                             return 'E1'
EntityA                             return 'E2'
Contract                            return 'C'
.                                   return '.'
Equals                              return '='
Contains                            return 'CONTAINS'
Between                             return 'BETWEEN'
Greater                             return '>'
Lesser                              return '<'
AND                                 return 'AND'
OR                                  return 'OR'
Return                              return 'RETURN'
;                                   return 'ENDRULE'
<<EOF>>                             return 'EOF'

/lex

%start expressions
%%

expressions :
    rule                {$$ = $1
                            console.log("rule: " + $$)}
    ;

 rule: 
    List Contracts 
    Where 
    {
        $$ = $1 + " "
            + $2 + " "
            + $3 + " "
    }
 ;

Am i doing it the right way?