Nullable token in statement

src/Statement.cpp

@@ -1,13 +1,13 @@
 #include "Statement.h"
 
-Statement::Statement(Kind kind, Token token, shared_ptr<Expression> expression): kind(kind), token(token), expression(expression) {
+Statement::Statement(Kind kind, shared_ptr<Token> token, shared_ptr<Expression> expression): kind(kind), token(token), expression(expression) {
 }
 
 shared_ptr<Expression> Statement::getExpression() {
     return expression;
 }
 
-Token Statement::getToken() {
+shared_ptr<Token> Statement::getToken() {
     return token;
 }