for cases of var a; where no initializer is given I sneak in a dummy new Expr.Literal(null) to give Interpreter.visitVarStmt something to chew on via Interpreter.evaluate(Expr expr) instead of having to do a check for null.
Pros:
more natural "flow" in each section as we remove the checks for null
Cons:
slight performance hit as we now need to evaluate the null literal
for cases of
var a;where no initializer is given I sneak in a dummynew Expr.Literal(null)to giveInterpreter.visitVarStmtsomething to chew on viaInterpreter.evaluate(Expr expr)instead of having to do a check fornull.Pros:
nullCons:
evaluatethe null literal