enum Expr

pub enum Expr :: [Debug]

Conforms to Debug.

An expression, each form a variant. The spans are of the whole expression. Macro is a site of another macro inside an argument: the outer macro hands it on, the next round expands it.

Variants

Literal(Literal, Span)

Name(Ident)

Implicit(Ident)

This(Span)

At(string, ?Expr[], Span)

Unary(UnaryOp, Box<Expr>, Span)

Postfix(Box<Expr>, PostfixOp, Span)

Binary(Box<Expr>, BinaryOp, Box<Expr>, Span)

Assign(Box<Expr>, ?BinaryOp, Box<Expr>, Span)

Range(Box<Expr>, Box<Expr>, bool, Span)

SliceRange(?Box<Expr>, ?Box<Expr>, bool, Span)

Cast(Box<Expr>, Type, Span)

Is(Box<Expr>, Type, Span)

Call(Box<Expr>, Arg[], Type[], Span)

Index(Box<Expr>, Box<Expr>, Span)

Member(Box<Expr>, Ident, bool, Span)

Array(Expr[], Span)

Tuple(Expr[], Span)

Interpolated(Segment[], Span)

Lambda(LambdaParam[], ?Type, ?Type[], Box<Body>, LambdaForm, Span)

LetCond(Pattern, Box<Expr>, Span)

If(Box<Expr>, Box<Expr>, Box<Expr>, Span)

Match(Box<Expr>, Arm[], Span)

Block(Block, Span)

Loop(Block, ?string, Span)

StructInit(string[], Type[], FieldInit[], bool, Span)

TypePath(string[], Type[], Span)

With(Box<Expr>, WithField[], Span)

Comptime(Box<Expr>, Span)

Throw(Box<Expr>, Span)

Try(Box<Expr>, TryKind, Catch[], Span)

Macro(string, Expr[], ?Block, Span)

Methods

pub fn span(): Span

Returns where this expression stands: its span, or an Ident's.

pub fn toSource(): string

Returns this expression as source, as the formatter writes it.

pub fn children(): Node[]

Returns the nodes directly inside this one, in source order.