Struct AbrTerm 

pub struct AbrTerm {
    pub predicate: String,
    pub args: Vec<String>,
}

A first-order-style ground term: predicate(arg0, arg1, …).

Fields

predicate: String

Predicate name (e.g. "wet", "broken_window").

args: Vec<String>

Ground arguments (e.g. ["lawn"]). May be empty for propositional facts.

Implementations

impl AbrTerm

pub fn new(predicate: impl Into<String>, args: Vec<impl Into<String>>) -> Self

Construct a new term.

pub fn prop(predicate: impl Into<String>) -> Self

Propositional shorthand — zero arguments.

pub fn fingerprint(&self) -> u64

FNV-1a fingerprint of the canonical form.

pub fn matches(&self, other: &AbrTerm) -> bool

Returns true if this term unifies with other under simple ground matching (exact equality or wildcard "_" arguments).

Trait Implementations

impl Clone for AbrTerm

fn clone(&self) -> AbrTerm

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AbrTerm

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

Formats the value using the given formatter.

impl Eq for AbrTerm

impl Hash for AbrTerm

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 AbrTerm

fn eq(&self, other: &AbrTerm) -> 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 StructuralPartialEq for AbrTerm