Struct declarative_dataflow::binding::AttributeBinding

pub struct AttributeBinding {
    pub variables: (u32, u32),
    pub source_attribute: Aid,
    pub default: Option<Value>,
}

Describes variables whose possible values are given by an attribute.

Fields

variables: (u32, u32)

The variables this binding talks about.

source_attribute: Aid

The name of a globally known attribute backing this binding.

default: Option<Value>

Default value of this attribute.

Trait Implementations

impl AsBinding for AttributeBinding

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 PartialOrd<AttributeBinding> for AttributeBinding

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl PartialEq<AttributeBinding> for AttributeBinding

fn eq(&self, other: &AttributeBinding) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &AttributeBinding) -> bool

This method tests for !=.

impl Clone for AttributeBinding

fn clone(&self) -> AttributeBinding

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Ord for AttributeBinding

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

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

🔬 This is a nightly-only experimental API. (clamp)

Returns max if self is greater than max, and min if self is less than min. Otherwise this will return self. Panics if min > max.

impl Eq for AttributeBinding

impl Debug for AttributeBinding

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

Formats the value using the given formatter.

impl Hash for AttributeBinding

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, 

Feeds a slice of this type into the given [Hasher].

impl Serialize for AttributeBinding

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

Serialize this value into the given Serde serializer.

impl<'de> Deserialize<'de> for AttributeBinding

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.