Enum Pattern 

pub enum Pattern {
    Wildcard {
        span: Span,
    },
    Variable {
        name: Identifier,
        span: Span,
    },
    Literal {
        value: String,
        span: Span,
    },
    Type {
        name: NamePath,
        span: Span,
    },
    Class {
        name: NamePath,
        fields: Vec<(Identifier, Option<Pattern>)>,
        span: Span,
    },
    Else {
        span: Span,
    },
}

A pattern for matching

Variants

Wildcard

A wildcard pattern that matches anything.

Fields

span: Span

The source code span.

Variable

A variable pattern that binds the matched value.

Fields

name: Identifier

The variable name.

span: Span

The source code span.

Literal

A literal pattern.

Fields

value: String

The literal value as a string.

span: Span

The source code span.

Type

A type pattern for matching types.

Fields

name: NamePath

The type name path.

span: Span

The source code span.

Class

A class pattern for destructuring.

let Point { x, y } = p           // shorthand syntax
let Point { x: a, y: b } = p     // explicit binding
let Point { x, y: new_y } = p    // mixed syntax

Fields

name: NamePath

The class name path.

fields: Vec<(Identifier, Option<Pattern>)>

The field patterns. None for shorthand syntax.

span: Span

The source code span.

Else

An else pattern (catch-all).

Fields

span: Span

The source code span.

Trait Implementations

impl Clone for Pattern

fn clone(&self) -> Pattern

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<'de> Deserialize<'de> for Pattern

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Pattern

impl Hash for Pattern

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 PartialEq for Pattern

fn eq(&self, other: &Pattern) -> 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 Serialize for Pattern

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Pattern