Usage
> lox 'source code'> lox -f './source-code.lx'Grammar
expression -> equality ;
equality -> comparison ( ( "!=" | "==" ) comparison )* ;
comparison -> term ( ( ">" | ">=" | "<" | "<=" ) term )* ;
term -> factor ( ( "-" | "+" ) factor )* ;
factor -> unary ( ( "/" | "*" ) unary )* ;
unary -> ( "!" | "-" ) unary | primary ;
primary -> number | string | "true" | "false" | "nil" | "(" expression ")" ;