Struct RefinementType 

pub struct RefinementType {
    pub var_name: String,
    pub base_type: ParametricType,
    pub refinement: TLExpr,
}

Refinement type: base type with a refinement predicate.

Fields

var_name: String

Variable name

base_type: ParametricType

Base type

refinement: TLExpr

Refinement predicate on the variable

Implementations

impl RefinementType

pub fn new( var_name: impl Into<String>, base_type: impl Into<String>, refinement: TLExpr, ) -> Self

pub fn from_parametric( var_name: impl Into<String>, base_type: ParametricType, refinement: TLExpr, ) -> Self

Create a refinement type from parametric type

pub fn positive_int(var_name: impl Into<String>) -> Self

Positive integers: {x: Int | x > 0}

pub fn nat(var_name: impl Into<String>) -> Self

Non-negative integers: {x: Int | x >= 0}

pub fn probability(var_name: impl Into<String>) -> Self

Probability: {x: Float | x >= 0.0 && x <= 1.0}

pub fn non_empty_vec( var_name: impl Into<String>, element_type: impl Into<String>, ) -> Self

Non-empty vector: {v: Vec<T> | length(v) > 0}

pub fn free_vars(&self) -> HashSet<String>

Get free variables in the refinement (excluding the refined variable)

pub fn is_subtype_of(&self, other: &RefinementType) -> bool

Check if this type is a subtype of another

pub fn weaken(&self) -> RefinementType

Weaken the refinement (make it less restrictive)

pub fn strengthen(&self, additional: TLExpr) -> RefinementType

Strengthen the refinement (add more constraints)

Trait Implementations

impl Clone for RefinementType

fn clone(&self) -> RefinementType

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RefinementType

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for RefinementType

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for RefinementType

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

Formats the value using the given formatter.

impl PartialEq for RefinementType

fn eq(&self, other: &RefinementType) -> 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 Serialize for RefinementType

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for RefinementType