Enum ResolveError 

#[non_exhaustive]
pub enum ResolveError {
    Unresolved {
        key: String,
        name: String,
        span: Range<usize>,
    },
    Required {
        key: String,
        name: String,
        message: String,
        span: Range<usize>,
    },
    Cycle {
        key: String,
        chain: Vec<String>,
    },
    DepthExceeded {
        key: String,
        limit: usize,
        span: Range<usize>,
    },
    ValueTooLarge {
        key: String,
        limit: usize,
        span: Range<usize>,
    },
    Command {
        key: String,
        reference: Range<usize>,
        message: String,
    },
}

A resolution failure.

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.

Unresolved

An eligible variable had no value under Unresolved::Error.

Fields

key: String

Entry being resolved.

name: String

Referenced name.

span: Range<usize>

Reference span in the original source.

Required

An :? or ? operator required a value.

Fields

key: String

Entry being resolved.

name: String

Referenced name.

message: String

Operator message.

span: Range<usize>

Reference span in the original source.

Cycle

Reachable bindings formed a cycle.

Fields

key: String

Entry where the cycle was detected.

chain: Vec<String>

Keys in cycle order, including the repeated final key.

DepthExceeded

The configured depth limit was reached.

Fields

key: String

Entry being resolved.

limit: usize

Configured limit.

span: Range<usize>

Reference or entry span.

ValueTooLarge

One resolved value exceeded the configured byte limit.

Fields

key: String

Entry being resolved.

limit: usize

Configured limit.

span: Range<usize>

Entry value or line span.

Command

A command callback failed.

Fields

key: String

Entry being resolved.

reference: Range<usize>

Whole $(...) reference span.

message: String

Callback error message.

Trait Implementations

impl Clone for ResolveError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ResolveError

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

Formats the value using the given formatter.

impl Display for ResolveError

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

Formats the value using the given formatter.

impl Eq for ResolveError

impl Error for ResolveError

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 ResolveError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ResolveError