Struct RirPatternBinding 

pub struct RirPatternBinding {
    pub is_wildcard: bool,
    pub is_mut: bool,
    pub name: Option<Spur>,
    pub sub_pattern: Option<Box<RirPattern>>,
}

A binding in a data variant pattern.

Shapes:

• is_wildcard = true → _ (no binding, matches anything)
• is_wildcard = false, name = Some(x), sub_pattern = None → x (bind field to x)
• is_wildcard = false, name = None, sub_pattern = Some(p) → p (nested refutable sub-pattern, ADR-0051)
• is_wildcard = false, name = Some(x), sub_pattern = Some(p) → x @ p (reserved; not yet exposed in surface syntax)

Fields

is_wildcard: bool

Whether this is a wildcard binding (_)

is_mut: bool

Whether this is a mutable binding (only meaningful if not wildcard)

name: Option<Spur>

The binding name (None for wildcard or nested sub-pattern bindings)

sub_pattern: Option<Box<RirPattern>>

Nested sub-pattern for refutable field matches like Some(Ok(v)). When Some, the binding’s match is sub_pattern recursively; when None, this is a flat leaf binding.

Trait Implementations

impl Clone for RirPatternBinding

fn clone(&self) -> RirPatternBinding

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RirPatternBinding

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for RirPatternBinding

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for RirPatternBinding

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

where __S: Serializer,

Serialize this value into the given Serde serializer.