Struct Generator 

pub struct Generator { /* private fields */ }

Program generator using grammar-based generation

Implementations

impl Generator

pub fn new(language: Language) -> Self

Create a new generator for the specified language

pub fn generate( &self, strategy: SamplingStrategy, count: usize, ) -> Result<Vec<GeneratedCode>>

Generate code samples using the specified strategy

Errors

Returns an error if generation fails

pub fn generate_swarm( &self, count: usize, max_depth: usize, features_per_batch: usize, seed: u64, ) -> Vec<GeneratedCode>

Generate code samples using swarm testing

Uses random feature subsets per batch to explore different combinations of language features (Groce et al. 2012).

pub fn generate_swarm_with_stats( &self, count: usize, max_depth: usize, features_per_batch: usize, seed: u64, ) -> (Vec<GeneratedCode>, SwarmStats)

Generate swarm test cases with statistics

Returns both the generated programs and swarm testing statistics.

pub fn generate_coverage_guided( &self, count: usize, max_depth: usize, seed: u64, ) -> Vec<GeneratedCode>

Generate code samples using coverage-guided (NAUTILUS-style) generation

This uses a corpus of interesting inputs and coverage feedback to prioritize unexplored AST paths.

pub fn generate_coverage_guided_with_map( &self, count: usize, max_depth: usize, seed: u64, initial_coverage: Option<&CoverageMap>, ) -> (Vec<GeneratedCode>, CoverageStats)

Generate code samples using coverage-guided generation with custom coverage map

Allows providing an existing coverage map to continue exploration.

Note: initial_coverage parameter reserved for incremental coverage seeding in future releases.

pub fn generate_exhaustive(&self, max_depth: usize) -> Vec<GeneratedCode>

Generate all programs exhaustively up to a given depth

Uses language-specific enumerators to systematically enumerate all valid programs up to the specified AST depth.

pub fn generate_with_stats(&self, max_depth: usize) -> GenerationStats

Generate programs with validation statistics

Returns both the generated programs and validation metrics

pub fn grammar(&self) -> &dyn Grammar

Get the grammar used by this generator

pub fn language(&self) -> Language

Get the language this generator targets

Trait Implementations

impl Debug for Generator

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

Formats the value using the given formatter.