Enum LevelRuleError 

#[non_exhaustive]
pub enum LevelRuleError {
    EmptyPattern {
        level: LineLevel,
    },
    TooManyRules {
        count: usize,
        limit: usize,
    },
    BadPattern {
        pattern: String,
        reason: String,
    },
}

Why a LevelRule list was refused.

#[non_exhaustive]: shep-core is published, and a rule grammar that grows a second kind of pattern would add a variant here with no version to warn an out-of-tree match about it.

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.

EmptyPattern

A rule’s pattern is empty. An empty regex matches every line, so the rule would claim the whole feed and leave every rule after it dead.

Fields

level: LineLevel

The level that rule would have given, so the refusal names which entry to edit.

TooManyRules

More rules than this crate’s ceiling on how many one app may declare. Each costs a compiled regex, and a client recompiles the whole list on every redraw, so the count is a per-frame cost. limit carries the ceiling rather than the doc naming a private const.

Fields

count: usize

How many the app declared.

limit: usize

The ceiling it passed.

BadPattern

A pattern does not compile, or compiles to a program over the size bound this crate puts on a pattern it did not write.

Fields

pattern: String

The pattern as the user wrote it.

reason: String

regex’s own rendered reason.

Trait Implementations

impl Clone for LevelRuleError

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 LevelRuleError

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

Formats the value using the given formatter.

impl Display for LevelRuleError

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

Formats the value using the given formatter.

impl Eq for LevelRuleError

impl Error for LevelRuleError

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 LevelRuleError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for LevelRuleError