Enum Declaration 

pub enum Declaration {
    FunctionDeclaration(Box<Function>),
    AliasDeclaration(TypeAlias),
    CustomTypeDeclaration(CustomType),
    PortDeclaration(Signature),
    InfixDeclaration(InfixDef),
    Destructuring {
        pattern: Spanned<Pattern>,
        body: Spanned<Expr>,
    },
}

A top-level declaration in an Elm module.

Variants

FunctionDeclaration(Box<Function>)

A function or value definition.

add : Int -> Int -> Int
add x y = x + y

AliasDeclaration(TypeAlias)

A type alias declaration.

type alias Model =
    { count : Int
    , name : String
    }

CustomTypeDeclaration(CustomType)

A custom type (ADT / tagged union) declaration.

type Msg
    = Increment
    | Decrement
    | SetName String

PortDeclaration(Signature)

A port declaration.

port sendMessage : String -> Cmd msg

InfixDeclaration(InfixDef)

An infix operator declaration (only in core packages).

infix left 6 (+) = add

Destructuring

A top-level destructuring (rare, but valid).

{ name, age } = person

Fields

pattern: Spanned<Pattern>

body: Spanned<Expr>

Trait Implementations

impl Clone for Declaration

fn clone(&self) -> Declaration

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Declaration

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

Formats the value using the given formatter.

impl Display for Declaration

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

Formats the value using the given formatter.

impl PartialEq for Declaration

fn eq(&self, other: &Declaration) -> 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 Eq for Declaration

impl StructuralPartialEq for Declaration