Struct LexerCustomAction 

pub struct LexerCustomAction { /* private fields */ }

Grammar-specific lexer action reached on the accepted ATN path.

ANTLR serializes embedded lexer actions as (rule_index, action_index) pairs. The runtime also records the input position where the action was reached so generated code can evaluate templates such as Text() at the same point as a generated ANTLR lexer, not only at the token end.

Implementations

impl LexerCustomAction

pub const fn new(rule_index: i32, action_index: i32, position: usize) -> Self

Creates a custom lexer action event from serialized ATN metadata.

pub const fn rule_index(self) -> i32

Lexer rule index that owns the embedded action.

pub const fn action_index(self) -> i32

Per-rule action index assigned by ANTLR serialization.

pub const fn position(self) -> usize

Character-stream position at which the action transition was reached.

Trait Implementations

impl Clone for LexerCustomAction

fn clone(&self) -> LexerCustomAction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LexerCustomAction

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

Formats the value using the given formatter.

impl PartialEq for LexerCustomAction

fn eq(&self, other: &LexerCustomAction) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for LexerCustomAction

impl Eq for LexerCustomAction

impl StructuralPartialEq for LexerCustomAction