Struct CompositePredicate 

pub struct CompositePredicate {
    pub name: String,
    pub parameters: Vec<String>,
    pub body: PredicateBody,
    pub description: Option<String>,
}

A composable predicate definition that can be expanded.

Composite predicates are defined in terms of other predicates and can include parameters that are substituted during expansion.

Fields

name: String

Name of this composite predicate

parameters: Vec<String>

Parameter names (e.g., [“x”, “y”])

body: PredicateBody

The body expression defining this predicate

description: Option<String>

Optional description

Implementations

impl CompositePredicate

pub fn new( name: impl Into<String>, parameters: Vec<String>, body: PredicateBody, ) -> Self

Creates a new composite predicate.

pub fn with_description(self, desc: impl Into<String>) -> Self

Sets the description for this composite predicate.

pub fn arity(&self) -> usize

Returns the arity (number of parameters) of this predicate.

pub fn validate(&self) -> Result<(), AdapterError>

Validates that this composite predicate is well-formed.

pub fn expand(&self, args: &[String]) -> Result<PredicateBody, AdapterError>

Expands this composite predicate with the given arguments.

Substitutes all parameter occurrences in the body with the provided arguments.

Trait Implementations

impl Clone for CompositePredicate

fn clone(&self) -> CompositePredicate

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CompositePredicate

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CompositePredicate

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for CompositePredicate

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.