Enum QueryError 

pub enum QueryError {
    Unsupported {
        construct: &'static str,
        at: usize,
    },
    UnbalancedGroup {
        at: usize,
    },
    UnclosedClass {
        at: usize,
    },
    UnclosedOptional {
        at: usize,
    },
    BadRepeat {
        at: usize,
    },
    BadClass {
        at: usize,
    },
    BadCharCode {
        at: usize,
    },
    TrailingBackslash {
        at: usize,
    },
    TooComplex,
    Cancelled,
}

Why a query cannot compile or run. Typed end to end — the walker

Variants

Unsupported

A construct outside the supported dialect (lookaround, \%V, \%#, \%23l-style positions, ~, the \M/\V magic levels, the \%= engine selector). at is the byte offset in the pattern where the construct starts.

Fields

construct: &'static str

at: usize

UnbalancedGroup

\( never closed, or a stray \).

Fields

at: usize

UnclosedClass

[ never closed.

Fields

at: usize

UnclosedOptional

\%[ never closed.

Fields

at: usize

BadRepeat

Malformed \{...} (bad numbers, missing \}), a quantifier with nothing to repeat, or a quantifier after a quantifier.

Fields

at: usize

BadClass

Bad collection contents: reverse range, unknown POSIX class, or && intersection.

Fields

at: usize

BadCharCode

Malformed \%d/\%x/\%u/\%U char code.

Fields

at: usize

TrailingBackslash

The pattern ends in a lone backslash.

Fields

at: usize

TooComplex

The bounded engine’s step budget ran out (vim’s E363 family) — the pattern is too expensive to run, not wrong.

Cancelled

Superseded background work stops without publishing a partial answer.

Trait Implementations

impl Clone for QueryError

fn clone(&self) -> QueryError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QueryError

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

Formats the value using the given formatter.

impl Display for QueryError

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

Formats the value using the given formatter.

impl Eq for QueryError

impl Error for QueryError

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 QueryError

fn eq(&self, other: &QueryError) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for QueryError