Struct ParseContext 

pub struct ParseContext<E> {
    pub error: E,
    pub offset: usize,
    pub field: Option<&'static str>,
}

Diagnostic context for a parse failure.

Carries the byte offset within the input where the parser stopped, alongside an error variant. Most parser entry points return the bare error type for backwards compatibility; use ParseContext::with_error to wrap one when richer diagnostics are useful (e.g. when reporting failures from a fuzz harness or when logging untrusted wire data).

Fields

error: E

Underlying error.

offset: usize

Byte offset within the input where the parser noticed the problem (0 if unknown).

field: Option<&'static str>

Optional human-readable name for the field that failed.

Implementations

impl<E> ParseContext<E>

pub const fn with_error( error: E, offset: usize, field: Option<&'static str>, ) -> Self

Wrap an error with the given byte offset and optional field name.

Trait Implementations

impl<E: Clone> Clone for ParseContext<E>

fn clone(&self) -> ParseContext<E>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<E: Debug> Debug for ParseContext<E>

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

Formats the value using the given formatter.

impl<E: Display> Display for ParseContext<E>

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

Formats the value using the given formatter.

impl<E: PartialEq> PartialEq for ParseContext<E>

fn eq(&self, other: &ParseContext<E>) -> 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<E: Eq> Eq for ParseContext<E>

impl<E> StructuralPartialEq for ParseContext<E>