[−][src]Function rsc::parser::preprocess
pub fn preprocess(tokens: &[Token]) -> Option<ParserError>
For detecting parsing errors using an iterative solution. This function can tell when
users accidentally enter an expression such as "2x" (when they mean "2(x)"). But just
as easily detects unknowingly valid expressions like "neg 3" where "neg" is currently
Token::Identifier
.