Struct ConstantBinding

pub struct ConstantBinding {
    pub variable: u32,
    pub value: Value,
}

Describes variables whose possible values are given by an attribute.

Fields

variable: u32

The variable this binding talks about.

value: Value

The value backing this binding.

Trait Implementations

impl AsBinding for ConstantBinding

fn variables(&self) -> Vec<u32>

All variables bound by this binding.

fn binds(&self, variable: u32) -> Option<usize>

Iff the binding has opinions about the given variable, this will return the offset, otherwise None.

fn ready_to_extend(&self, prefix: &dyn AsBinding) -> Option<u32>

Returns an optional variable by which this binding could extend the given prefix.

fn required_to_extend( &self, prefix: &dyn AsBinding, target: u32, ) -> Option<Option<u32>>

Returns an optional variable which must be bound by the prefix in order for this binding to extend the prefix. If None, then this binding can never be used to extend the prefix to the specified variable (e.g. because it doesn’t even bind it).

fn can_extend(&self, prefix: &dyn AsBinding, target: u32) -> bool

Returns true iff the binding is ready to participate in the extension of a set of prefix variables to a new variable.

impl Clone for ConstantBinding

fn clone(&self) -> ConstantBinding

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConstantBinding

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ConstantBinding

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for ConstantBinding

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 Ord for ConstantBinding

fn cmp(&self, other: &ConstantBinding) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for ConstantBinding

fn eq(&self, other: &ConstantBinding) -> 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 PartialOrd for ConstantBinding

fn partial_cmp(&self, other: &ConstantBinding) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for ConstantBinding

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for ConstantBinding

impl StructuralPartialEq for ConstantBinding