Struct ParseError 

pub struct ParseError {
    pub message: String,
    pub position: Position,
    pub expected: Vec<String>,
    pub kind: ParseErrorKind,
}

Parse error

Fields

message: String

Error message

position: Position

Position where error occurred

expected: Vec<String>

Expected tokens (for better error messages)

kind: ParseErrorKind

Optional structured kind for hardening / DoS errors

Implementations

impl ParseError

pub fn new(message: impl Into<String>, position: Position) -> Self

Create a new parse error

pub fn expected(expected: Vec<&str>, found: &Token, position: Position) -> Self

Create error with expected tokens

found is rendered through SafeTokenDisplay so caller-controlled bytes inside Token::Ident / Token::String / Token::JsonLiteral / Token::Float / Token::Integer payloads are escaped via Rust’s escape_debug rules (CR / LF / NUL / quote bytes become \n, \r, \0, \", …). Static keyword and punctuation arms keep their existing UPPER-CASE rendering so error messages and snapshot tests stay readable. This prevents F-05 smuggling through the downstream JSON / audit / log / gRPC sinks that embed ParseError::message.

pub fn unsupported_recognized_token( found: &Token, position: Position, ) -> Option<Self>

Create an error when a lexer-known keyword appears in a parser position where that keyword has no supported production.

pub fn depth_limit( limit_name: &'static str, value: usize, position: Position, ) -> Self

Recursion depth limit hit. The structured kind carries the name + numeric value so the snapshot/property harness can pattern-match without string slicing.

pub fn input_too_large( limit_name: &'static str, value: usize, position: Position, ) -> Self

Input bytes exceeded the configured cap.

pub fn identifier_too_long( limit_name: &'static str, value: usize, position: Position, ) -> Self

Identifier exceeded the configured character cap.

pub fn value_out_of_range( field: &'static str, constraint: &'static str, position: Position, ) -> Self

A literal value lies outside the allowed range for its slot. The free-text constraint is included verbatim in the message so callers can render a single line without re-formatting.

Trait Implementations

impl Clone for ParseError

fn clone(&self) -> ParseError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParseError

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

Formats the value using the given formatter.

impl Display for ParseError

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

Formats the value using the given formatter.

impl Error for ParseError

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<LexerError> for ParseError

fn from(e: LexerError) -> Self

Converts to this type from the input type.