Enum Error 

pub enum Error {
    Parse(ParseError),
    InvalidGrammar(String),
    AstBuild(BuilderError),
    FeaturesDisabled(Vec<FeatureGateError>),
    DepthLimit {
        limit: usize,
        span: Span,
    },
    AnnotationLimit {
        limit: usize,
        span: Span,
    },
}

High-Level-Fehler des Top-Level-Parsers.

Vereint Lexer-, Recognition- und Builder-Fehler unter einem Typ, damit Konsumenten nur eine Error-Variante behandeln muessen.

Variants

Parse(ParseError)

Lexer- oder Recognition-Fehler. Enthaelt den existierenden ParseError-Variant fuer Token/EOF-Diagnostik.

InvalidGrammar(String)

Grammar-Konstruktions-Fehler. Tritt nur bei korruptem Build der Grammar-Konstante auf — sollte fuer IDL_42 nie passieren.

AstBuild(BuilderError)

AST-Builder-Fehler. Indiziert Bug im Builder oder Grammar-Drift.

FeaturesDisabled(Vec<FeatureGateError>)

Verwendetes Konstrukt benoetigt ein Feature das in ParserConfig::features aus ist. Liste aller Verletzungen.

DepthLimit

{-/}-Verschachtelung ueberschreitet MAX_NESTING_DEPTH. Schutz vor Stack-Overflow im rekursiven CST-Builder (TS-1-Finding 1).

Fields

limit: usize

Aktueller Cap.

span: Span

Position des {-Tokens, das den Cap ueberschritten hat.

AnnotationLimit

Aufeinanderfolgende @-Annotations ueberschreiten MAX_CONSECUTIVE_ANNOTATIONS. Schutz vor quadratischem Verhalten im linksrekursiven Annotation-Sequence-CST-Build (TS-1-Finding 2).

Fields

limit: usize

Aktueller Cap.

span: Span

Position des @-Tokens, das den Cap ueberschritten hat.

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<BuilderError> for Error

fn from(e: BuilderError) -> Self

Converts to this type from the input type.

impl From<ParseError> for Error

fn from(e: ParseError) -> Self

Converts to this type from the input type.

impl PartialEq for Error

fn eq(&self, other: &Error) -> 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 Eq for Error

impl StructuralPartialEq for Error