Struct rustlr::charlexer

pub struct charlexer<'t> { /* fields omitted */ }

This is a sample Lexer implementation designed to return every character in a string as a separate token, and is used in small grammars for testing and illustration purposes. It is assumed that the characters read are defined as terminal symbols in the grammar.

Implementations

impl<'t> charlexer<'t>

pub fn new<'u: 't>(input: &'u str) -> charlexer<'u>

Trait Implementations

impl<'t, AT: Default> Lexer<AT> for charlexer<'t>

fn nextsym(&mut self) -> Option<Lextoken<AT>>

retrieves the next Lextoken, or None at end-of-stream.

fn linenum(&self) -> usize

returns the current line number. The

fn column(&self) -> usize

returns the current column (character position) on the current line.