Struct RegexEngine 

pub struct RegexEngine<N: Normalizer = ProductionNormalizer, P: Prefilter = PrefixPrefilter> { /* private fields */ }

Production rule engine: pluggable normalizer + prefilter + RegexSet DFA.

Default type parameters give zero-cost production behavior via monomorphization. Tests can substitute IdentityNormalizer and/or NullPrefilter for isolation.

Examples

use guardrail::engine::*;
let rules = vec![]; // load from config
// Production (default):
let engine = RegexEngine::new(rules.clone())?;
// Testing (no normalization, no prefilter):
let engine = RegexEngine::with_plugins(rules, IdentityNormalizer, NullPrefilter)?;

Implementations

impl RegexEngine

Default constructor – production configuration.

pub fn new(rules: Vec<Rule>) -> Result<Self>

Create an engine with ProductionNormalizer + PrefixPrefilter.

Errors

Returns an error if any regex pattern is invalid or the compiled DFA exceeds the 100MB size limit.

impl<N: Normalizer, P: Prefilter> RegexEngine<N, P>

pub fn with_plugins( rules: Vec<Rule>, normalizer: N, prefilter: P, ) -> Result<Self>

Create an engine with custom normalizer and prefilter.

Errors

Returns an error if any regex pattern is invalid.

Trait Implementations

impl<N: Normalizer + Debug, P: Prefilter + Debug> Debug for RegexEngine<N, P>

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

Formats the value using the given formatter.

impl<N: Normalizer, P: Prefilter> RuleEngine for RegexEngine<N, P>

fn check(&self, command: &str) -> Decision

fn rules(&self) -> &[Rule]

fn rule_count(&self) -> usize