Enum Pattern 

pub enum Pattern {
    Wildcard(Span),
    Name(Ident),
    Variant(VariantPattern),
}

A match pattern, one level deep (spec 2.3). Not in milestone 2, each V0001: nested patterns, literal patterns, guards (pattern if cond), alternatives (a | b), rest patterns (..), range patterns, and @ bindings.

Variants

Wildcard(Span)

_: matches anything, binds nothing.

Name(Ident)

A bare name: matches anything and binds it. The parser cannot tell this apart from a zero-argument variant written without its type (None): the type checker (task 8) decides against the matched value’s type.

Variant(VariantPattern)

A variant, optionally reached through a type and a module: Point, Some(p), Shape::Circle(p, q), geo::Shape::Point.

Implementations

impl Pattern

pub fn span(&self) -> Span

Trait Implementations

impl Clone for Pattern

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Pattern

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

Formats the value using the given formatter.

impl PartialEq for Pattern

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Pattern