Struct InputStream 

pub struct InputStream { /* private fields */ }

Implementations

impl InputStream

pub fn new(input: impl AsRef<str>) -> Self

Creates a character stream from UTF-8 text using ANTLR’s unknown source name placeholder.

pub fn with_source_name( input: impl AsRef<str>, source_name: impl Into<String>, ) -> Self

Creates a character stream with an explicit source name for tokens and diagnostics.

pub fn is_eof(&self) -> bool

Returns true when the cursor has reached or passed the end of input.

Trait Implementations

impl CharStream for InputStream

fn text(&self, interval: TextInterval) -> String

Returns text for an inclusive interval of Unicode scalar indices.

fn symbol_at(&self, index: usize) -> Option<i32>

Reads one Unicode scalar at an absolute character index without moving the stream cursor.

fn contiguous_ascii(&self) -> Option<&[u8]>

Returns the complete input as ASCII bytes when character and byte indexes are identical.

fn position_summary(&self, start: usize, end: usize) -> Option<PositionSummary>

Summarizes source-position changes for the half-open character interval [start, end) without moving the stream cursor.

fn text_source_interval( &self, interval: TextInterval, ) -> Option<(Rc<str>, usize, usize)>

fn source_text(&self) -> Option<Rc<str>>

Returns the complete backing UTF-8 source when it can be shared with a token store.

fn byte_interval(&self, interval: TextInterval) -> Option<(usize, usize)>

impl Clone for InputStream

fn clone(&self) -> InputStream

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for InputStream

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

Formats the value using the given formatter.

impl IntStream for InputStream

fn consume(&mut self)

fn la(&mut self, offset: isize) -> i32

fn index(&self) -> usize

fn seek(&mut self, index: usize)

fn size(&self) -> usize

fn source_name(&self) -> &str

fn mark(&mut self) -> isize

fn release(&mut self, _marker: isize)