Enum Pat 

pub enum Pat {
    Wild,
    Bind {
        name: String,
        inner: Option<Box<Pat>>,
    },
    Literal(LitPat),
    Ctor {
        ctor: CtorKind,
        fields: Vec<Pat>,
    },
    Or(Vec<Pat>),
    Range {
        lo: Option<i128>,
        hi: Option<i128>,
        inclusive: bool,
    },
}

A pattern in the pattern matrix

Variants

Wild

Wildcard pattern

Bind

Binding pattern

Fields

name: String

inner: Option<Box<Pat>>

Literal(LitPat)

Literal pattern

Ctor

Constructor pattern (enum variant, struct)

Fields

ctor: CtorKind

fields: Vec<Pat>

Or(Vec<Pat>)

Or-pattern

Range

Range pattern

Fields

lo: Option<i128>

hi: Option<i128>

inclusive: bool

Implementations

impl Pat

pub fn is_wildcard(&self) -> bool

Check if this pattern is a wildcard or binding (always matches)

pub fn fields(&self) -> Option<&[Pat]>

Get the fields of this pattern if it’s a constructor

pub fn binding_name(&self) -> Option<&str>

Check if this pattern binds a name

Trait Implementations

impl Clone for Pat

fn clone(&self) -> Pat

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Pat

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

Formats the value using the given formatter.