Struct syntax::ext::base::DummyResult

pub struct DummyResult { /* fields omitted */ }

Fill-in macro expansion result, to allow compilation to continue after hitting errors.

Methods

impl DummyResult

pub fn any(span: Span) -> Box<dyn MacResult + 'static>

Creates a default MacResult that can be anything.

Use this as a return value after hitting any errors and calling span_err.

pub fn any_valid(span: Span) -> Box<dyn MacResult + 'static>

Same as any, but must be a valid fragment, not error.

pub fn raw_expr(sp: Span, is_error: bool) -> P<Expr>

A plain dummy expression.

pub fn raw_pat(sp: Span) -> Pat

A plain dummy pattern.

pub fn raw_ty(sp: Span, is_error: bool) -> P<Ty>

A plain dummy type.

Trait Implementations

impl MacResult for DummyResult

fn make_expr(self: Box<DummyResult>) -> Option<P<Expr>>

Creates an expression.

fn make_pat(self: Box<DummyResult>) -> Option<P<Pat>>

Creates a pattern.

fn make_items(self: Box<DummyResult>) -> Option<SmallVec<[P<Item>; 1]>>

Creates zero or more items.

fn make_impl_items(self: Box<DummyResult>) -> Option<SmallVec<[ImplItem; 1]>>

Creates zero or more impl items.

fn make_trait_items(self: Box<DummyResult>) -> Option<SmallVec<[TraitItem; 1]>>

Creates zero or more trait items.

fn make_foreign_items(self: Box<Self>) -> Option<SmallVec<[ForeignItem; 1]>>

Creates zero or more items in an extern {} block

fn make_stmts(self: Box<DummyResult>) -> Option<SmallVec<[Stmt; 1]>>

Creates zero or more statements.

fn make_ty(self: Box<DummyResult>) -> Option<P<Ty>>

fn make_arms(self: Box<DummyResult>) -> Option<SmallVec<[Arm; 1]>>

fn make_fields(self: Box<DummyResult>) -> Option<SmallVec<[Field; 1]>>

fn make_field_patterns(
    self: Box<DummyResult>
) -> Option<SmallVec<[FieldPat; 1]>>

fn make_generic_params(
    self: Box<DummyResult>
) -> Option<SmallVec<[GenericParam; 1]>>

fn make_params(self: Box<DummyResult>) -> Option<SmallVec<[Param; 1]>>

fn make_struct_fields(
    self: Box<DummyResult>
) -> Option<SmallVec<[StructField; 1]>>

fn make_variants(self: Box<DummyResult>) -> Option<SmallVec<[Variant; 1]>>

impl Clone for DummyResult

fn clone(&self) -> DummyResult

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for DummyResult