Struct CacheError 

pub struct CacheError(/* private fields */);

Available on crate feature hybrid only.

An error that occurs when cache usage has become inefficient.

One of the weaknesses of a lazy DFA is that it may need to clear its cache repeatedly if it’s not big enough. If this happens too much, then it can slow searching down significantly. A mitigation to this is to use heuristics to detect whether the cache is being used efficiently or not. If not, then a lazy DFA can return a CacheError.

The default configuration of a lazy DFA in this crate is set such that a CacheError will never occur. Instead, callers must opt into this behavior with settings like dfa::Config::minimum_cache_clear_count and dfa::Config::minimum_bytes_per_state.

When the std feature is enabled, this implements the std::error::Error trait.

Trait Implementations

impl Clone for CacheError

fn clone(&self) -> CacheError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CacheError

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

Formats the value using the given formatter.

impl Display for CacheError

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

Formats the value using the given formatter.

impl Error for CacheError

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.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 0 bytes