Struct Pattern 

pub struct Pattern {
    pub holes: Vec<ZId>,
    pub first_zid_of_ivar: Vec<ZId>,
    pub match_locations: Vec<Id>,
    pub utility_upper_bound: i32,
    pub body_utility: i32,
    pub tracked: bool,
    /* private fields */
}

A Pattern is a partial invention with holes. The simplest pattern is the single hole ?? which matches at all nodes in the program set. From this single hole in a top-down manner we grow more complex patterns like (+ ?? ??) and (+ 3 (* ?? ??)). Expanding a hole in a pattern always results in a pattern that matches at a subset of the places that the original pattern matched.

match_locations is the list of structurally hashed nodes where the pattern matches. holes is the list of zippers that point from the root of the pattern to the holes. arg_choices is the same as holes but for the invention arguments like #i body_utility is the cost of the non-hole non-argchoice parts of the pattern so far

Fields

holes: Vec<ZId>

first_zid_of_ivar: Vec<ZId>

match_locations: Vec<Id>

utility_upper_bound: i32

body_utility: i32

tracked: bool

Implementations

impl Pattern

pub fn info(&self, shared: &SharedData) -> String

Trait Implementations

impl Clone for Pattern

fn clone(&self) -> Pattern

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Pattern

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

Formats the value using the given formatter.

impl Hash for Pattern

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Pattern

fn eq(&self, other: &Pattern) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Pattern

impl StructuralPartialEq for Pattern