Enum Error 

#[non_exhaustive]
pub enum Error<V = Val> {
    Val(V),
    Type(V, Type),
    MathOp(V, MathOp, V),
    Index(V, V),
    IndexOutOfBounds(isize),
    PathExp,
    TailCall(TailCall<V>),
}

Errors that can occur during filter execution.

Each variant shows an example of how it can be produced.

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.

Val(V)

0 | error

Type(V, Type)

Expected a value of given type, but got something else

MathOp(V, MathOp, V)

1 - "a"

Index(V, V)

{} | .[0] or [] | has("a") or {} | has(0)

IndexOutOfBounds(isize)

[] | .[0] = 0

PathExp

0 |= .+1

TailCall(TailCall<V>)

Tail-recursive call.

This is used internally to execute tail-recursive filters. If this can be observed by users, then this is a bug.

Implementations

impl<V: ValT> Error<V>

pub fn as_val(self) -> V

Convert the error into a value to be used by catch filters.

impl<V: From<String>> Error<V>

pub fn str(s: impl ToString) -> Self

Build an error from something that can be converted to a string.

Trait Implementations

impl<V: Clone> Clone for Error<V>

fn clone(&self) -> Error<V>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<V: Debug> Debug for Error<V>

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

Formats the value using the given formatter.

impl<V: ValT> Display for Error<V>

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

Formats the value using the given formatter.

impl Error for Error

Available on crate feature std only.

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<V: PartialEq> PartialEq for Error<V>

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

impl<V> StructuralPartialEq for Error<V>