Struct CharNavigator 

pub struct CharNavigator<'a> { /* private fields */ }

Character navigation helper for tokenizer

Provides character-level navigation with position tracking and lookahead capabilities for efficient tokenization.

Implementations

impl<'a> CharNavigator<'a>

pub fn new(source: &'a str, position: usize, line: usize, column: usize) -> Self

Create new character navigator

pub const fn position(&self) -> usize

Get current position

pub const fn line(&self) -> usize

Get current line

pub const fn column(&self) -> usize

Get current column

pub fn peek_char(&mut self) -> Result<char>

Peek at current character without advancing

Errors

Returns an error if the current position contains invalid UTF-8 or is at end of input.

pub fn peek_next(&self) -> Result<char>

Peek at next character without advancing

Errors

Returns an error if the next position is at end of input.

pub fn advance_char(&mut self) -> Result<char>

Advance by one character

Errors

Returns an error if unable to peek at the current character.

pub fn skip_whitespace(&mut self)

Skip whitespace (excluding newlines)

pub const fn is_at_end(&self) -> bool

Check if at end of source

Trait Implementations

impl<'a> Clone for CharNavigator<'a>

fn clone(&self) -> CharNavigator<'a>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Debug for CharNavigator<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.