Struct Lexer 

pub struct Lexer<'src> { /* private fields */ }

Public API for Lexer.

Implementations

impl<'src> Lexer<'src>

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

Public API for new.

pub fn peek(&mut self) -> Result<&Token, &LexError>

Peek at the next token without consuming it.

pub fn next(&mut self) -> Result<Token, LexError>

Consume and return the next token.

pub fn eat(&mut self, expected: &Token) -> bool

Consume if next token matches; otherwise leave it in the peek buffer.

pub fn eat_kw(&mut self, kw: Keyword) -> bool

Public API for eat_kw.

pub fn expect(&mut self, expected: &Token) -> Result<(), LexError>

Consume a token and verify it matches expected; return an error otherwise.

pub fn expect_kw(&mut self, kw: &Keyword) -> Result<(), LexError>

Public API for expect_kw.

pub fn expect_local_ident(&mut self) -> Result<String, LexError>

Public API for expect_local_ident.

pub fn expect_global_ident(&mut self) -> Result<String, LexError>

Public API for expect_global_ident.

pub fn expect_int_lit(&mut self) -> Result<i64, LexError>

Public API for expect_int_lit.

pub fn expect_uint_lit(&mut self) -> Result<u64, LexError>

Public API for expect_uint_lit.

pub fn expect_string_lit(&mut self) -> Result<String, LexError>

Public API for expect_string_lit.

pub fn current_line(&self) -> usize

Public API for current_line.

pub fn current_col(&self) -> usize

Public API for current_col.