Struct Rule 

pub struct Rule {
    pub head: Predicate,
    pub body: Vec<Predicate>,
    pub expressions: Vec<Expression>,
    pub parameters: Option<HashMap<String, Option<Term>>>,
    pub scopes: Vec<Scope>,
    pub scope_parameters: Option<HashMap<String, Option<PublicKey>>>,
}

Builder for a Datalog rule

Fields

head: Predicate

body: Vec<Predicate>

expressions: Vec<Expression>

parameters: Option<HashMap<String, Option<Term>>>

scopes: Vec<Scope>

scope_parameters: Option<HashMap<String, Option<PublicKey>>>

Implementations

impl Rule

pub fn new( head: Predicate, body: Vec<Predicate>, expressions: Vec<Expression>, scopes: Vec<Scope>, ) -> Rule

pub fn validate_variables(&self) -> Result<(), String>

Trait Implementations

impl Clone for Rule

fn clone(&self) -> Rule

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Rule

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

Formats the value using the given formatter.

impl PartialEq for Rule

fn eq(&self, other: &Rule) -> 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 Rule

impl StructuralPartialEq for Rule