Struct DefaultErrorStrategy 

pub struct DefaultErrorStrategy<'input, 'arena, TF, P>
where
    TF: TokenFactory<'input, 'arena> + 'arena,
    P: Parser<'input, 'arena, TF>,
    'input: 'arena,
{ /* private fields */ }

This is the default implementation of ErrorStrategy used for error reporting and recovery in ANTLR parsers.

Implementations

impl<'input, 'arena, TF, P> DefaultErrorStrategy<'input, 'arena, TF, P>

where TF: TokenFactory<'input, 'arena> + 'arena, P: Parser<'input, 'arena, TF>, 'input: 'arena,

pub fn new() -> Self

Creates new instance of DefaultErrorStrategy

Trait Implementations

impl<'input, 'arena, TF, P> Debug for DefaultErrorStrategy<'input, 'arena, TF, P>

where TF: TokenFactory<'input, 'arena> + 'arena + Debug, P: Parser<'input, 'arena, TF> + Debug, P::Node: Debug, 'input: 'arena,

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

Formats the value using the given formatter.

impl<'input, 'arena, TF, P> Default for DefaultErrorStrategy<'input, 'arena, TF, P>

where TF: TokenFactory<'input, 'arena> + 'arena, P: Parser<'input, 'arena, TF>, 'input: 'arena,

fn default() -> Self

Returns the “default value” for a type.

impl<'input, 'arena, TF, P> ErrorStrategy<'input, 'arena, TF, P> for DefaultErrorStrategy<'input, 'arena, TF, P>

where TF: TokenFactory<'input, 'arena> + 'arena, P: Parser<'input, 'arena, TF>, 'input: 'arena,

fn reset(&mut self, recognizer: &mut P)

Reset the error handler state for the specified recognizer.

fn recover_inline( &mut self, recognizer: &mut P, ) -> Result<&'arena TF::Tok, ANTLRError>

This method is called when an unexpected symbol is encountered during an inline match operation, such as Parser::match. If the error strategy successfully recovers from the match failure, this method returns the Token instance which should be treated as the successful result of the match.

fn recover( &mut self, recognizer: &mut P, _e: &ANTLRError, ) -> Result<(), ANTLRError>

This method is called to recover from error e. This method is called after ErrorStrategy::reportError by the default error handler generated for a rule method.

fn sync(&mut self, recognizer: &mut P) -> Result<(), ANTLRError>

This method provides the error handler with an opportunity to handle syntactic or semantic errors in the input stream before they result in a error.

fn in_error_recovery_mode(&mut self, _recognizer: &mut P) -> bool

Tests whether or not {@code recognizer} is in the process of recovering from an error. In error recovery mode, Parser::consume will create ErrorNode leaf instead of TerminalNode one

fn report_error(&mut self, recognizer: &mut P, e: &ANTLRError)

Report any kind of ANTLRError. This method is called by the default exception handler generated for a rule method.

fn report_match(&mut self, recognizer: &mut P)

This method is called when the parser successfully matches an input symbol.