Struct Scanner 

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

Implementations

impl<'a> Scanner<'a>

pub fn new(src: &'a str) -> Self

pub fn pos(&self) -> Position

pub fn src(&self) -> &'a str

pub fn src_slice(&self, start: usize, end: usize) -> &'a str

pub fn set_pos(&mut self, pos: Position)

Set position. Used for backtracking when a heuristic match fails.

pub fn is_eof(&self) -> bool

pub fn peek(&self) -> Option<u8>

pub fn peek_at(&self, offset: usize) -> Option<u8>

pub fn advance(&mut self) -> Option<u8>

pub fn skip_line(&mut self)

pub fn skip_trivia(&mut self)

Skip whitespace and Erlang % ... comments. Stops at the first non-trivia byte.

pub fn consume_string(&mut self)

Consume a string literal starting at ", leaving the cursor just past the closing quote. Handles escaped characters minimally.

pub fn consume_quoted_atom(&mut self)

Consume a quoted-atom literal starting at ', leaving the cursor just past the closing quote. Does not validate the contents.

pub fn consume_char_literal(&mut self)

Consume a $c, $\n, or $\^X character literal.

pub fn consume_identifier(&mut self) -> &'a str

Read an unquoted identifier (atom or variable). Returns the slice of source covered.

pub fn consume_macro_ref(&mut self) -> &'a str

Read a ?MACRO reference returning the macro name without the ?.

pub fn skip_balanced_parens(&mut self) -> u32

Skip a balanced parenthesized expression, beginning at (. Tracks nested (), [], {}, strings, and atoms.

Trait Implementations

impl<'a> Clone for Scanner<'a>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for Scanner<'a>

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

Formats the value using the given formatter.