Enum ParseErrorKind 

#[non_exhaustive]
pub enum ParseErrorKind {
    UnexpectedEof,
    UnexpectedToken {
        expected: &'static str,
    },
    InvalidNumber,
    InvalidString(&'static str),
    InvalidUtf8,
    UnknownField,
    UnknownEnumValue,
    RecursionLimitExceeded,
    DelimiterMismatch,
    Internal(&'static str),
}

Available on crate feature text only.

The category of textproto parse error.

Variants are all zero-allocation: they hold &'static str or small Copy payloads. The full diagnostic (including position) lives in ParseError.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

UnexpectedEof

Input ended while a value was still being parsed.

UnexpectedToken

A token appeared where the grammar didn’t permit it.

The expected string describes what the parser wanted — e.g. "field name", "scalar value", "',' or ']'".

Fields

expected: &'static str

Human-readable description of what was expected.

InvalidNumber

A number literal couldn’t be interpreted as the target numeric type (out of range, wrong base, or float where integer expected).

InvalidString(&'static str)

A string literal contained a malformed escape sequence.

Holds the reason produced by the unescaper — e.g. "invalid \\x escape", "invalid unicode escape".

InvalidUtf8

A string field’s unescaped bytes were not valid UTF-8.

bytes fields use TextDecoder::read_bytes and do not produce this error.

UnknownField

A field name appeared that the message’s merge_text does not recognise, and the caller did not ask to skip unknowns.

UnknownEnumValue

An enum variant name was not recognised, or a closed enum received a numeric value outside its defined set.

Open (proto3) enums accept any in-range integer and never produce this error for numeric input. Closed (proto2) enums reject unknown numbers.

RecursionLimitExceeded

Message nesting exceeded RECURSION_LIMIT.

DelimiterMismatch

A message was opened with { but closed with >, or vice versa.

Textproto allows either {...} or <...> around sub-messages, but the pair must match.

Internal(&'static str)

An internal invariant was violated during parsing.

This indicates a bug in buffa, not a problem with the input. Please report it if encountered.

Trait Implementations

impl Clone for ParseErrorKind

fn clone(&self) -> ParseErrorKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParseErrorKind

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

Formats the value using the given formatter.

impl Display for ParseErrorKind

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

Formats the value using the given formatter.

impl Eq for ParseErrorKind

impl Error for ParseErrorKind

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 PartialEq for ParseErrorKind

fn eq(&self, other: &ParseErrorKind) -> 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 StructuralPartialEq for ParseErrorKind