Struct E 

pub struct E;

The E namespace — static factory methods for evaluation criteria.

Implementations

impl E

pub fn suite() -> EvalSuite

Create an evaluation suite.

pub fn response_match() -> ECriterion

Exact response match criterion.

pub fn contains_match() -> ECriterion

Substring containment criterion — scores 1.0 if output contains expected.

pub fn safety() -> ECriterion

Safety criterion — placeholder that always passes.

pub fn semantic_match() -> ECriterion

Semantic match criterion — placeholder (requires LLM judge at runtime).

pub fn hallucination() -> ECriterion

Hallucination detection criterion — placeholder.

pub fn trajectory() -> ECriterion

Trajectory evaluation — placeholder for tool call sequence validation.

pub fn custom( name: &'static str, f: impl Fn(&str, &str) -> f64 + Send + Sync + 'static, ) -> ECriterion

Custom evaluation criterion from a scoring function.

pub fn from_file(path: &str) -> EvalSuite

Load eval cases from a file path.

The file should contain one case per pair of consecutive lines: odd lines are prompts, even lines are expected responses. Lines starting with # are comments and blank lines are skipped.

pub fn persona(name: &'static str, description: &'static str) -> ECriterion

Create a persona-based evaluator for user simulation.

The persona describes a simulated user with a given name and description, which can be used to generate realistic test interactions.