Enum RegexDfaError 

#[non_exhaustive]
pub enum RegexDfaError {
    Compile(RegexCompileError),
    Lower(NfaToDfaError),
    Size {
        message: String,
    },
}

Failures from build_regex_dfa_pipeline.

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.

Compile(RegexCompileError)

Regex parsing or NFA construction rejected a pattern.

Lower(NfaToDfaError)

Subset construction couldn’t lower the NFA - typically state explosion. The caller should either raise max_dfa_states, shard the pattern set, or fall back to RulePipeline.

Size

Regex/DFA metadata exceeded the GPU program’s u32 ABI or host-side staging allocation budget.

Fields

message: String

Actionable sizing diagnostic.

Implementations

impl RegexDfaError

pub fn diagnostic_code(&self) -> Option<&'static str>

The canonical REGEX_UNSUPPORTED_DIAGNOSTICS.toml diagnostic code for this pipeline error, forwarded from the inner RegexCompileError when the failure is an unsupported construct, else None. Lets a consumer of the higher-level pipeline builder route on the same registry code as the low-level compile_regex_set path (one owner for the mapping).

Trait Implementations

impl Debug for RegexDfaError

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

Formats the value using the given formatter.

impl Display for RegexDfaError

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

Formats the value using the given formatter.

impl Error for RegexDfaError

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 From<NfaToDfaError> for RegexDfaError

fn from(error: NfaToDfaError) -> Self

Converts to this type from the input type.

impl From<RegexCompileError> for RegexDfaError

fn from(error: RegexCompileError) -> Self

Converts to this type from the input type.