Struct rustc_expand::expand::InvocationCollector

struct InvocationCollector<'a, 'b> {
    cx: &'a mut ExtCtxt<'b>,
    invocations: Vec<(Invocation, Option<Lrc<SyntaxExtension>>)>,
    monotonic: bool,
}

Fields

cx: &'a mut ExtCtxt<'b>

invocations: Vec<(Invocation, Option<Lrc<SyntaxExtension>>)>

monotonic: bool

Implementations

impl<'a, 'b> InvocationCollector<'a, 'b>

fn cfg(&self) -> StripUnconfigured<'_>

fn collect(
    &mut self,
    fragment_kind: AstFragmentKind,
    kind: InvocationKind
) -> AstFragment

fn collect_bang(&mut self, mac: P<MacCall>, kind: AstFragmentKind) -> AstFragment

fn collect_attr(
    &mut self,
    (attr, pos, derives): (Attribute, usize, Vec<Path>),
    item: Annotatable,
    kind: AstFragmentKind
) -> AstFragment

fn take_first_attr(
    &self,
    item: &mut impl HasAttrs
) -> Option<(Attribute, usize, Vec<Path>)>

If item is an attribute invocation, remove the attribute and return it together with its position and derives following it. We have to collect the derives in order to resolve legacy derive helpers (helpers written before derives that introduce them).

fn check_attributes(&self, attrs: &[Attribute], call: &MacCall)

fn expand_cfg_true(
    &mut self,
    node: &mut impl HasAttrs,
    attr: Attribute,
    pos: usize
) -> bool

fn expand_cfg_attr(&self, node: &mut impl HasAttrs, attr: Attribute, pos: usize)

fn flat_map_node<Node: InvocationCollectorNode<OutputTy: Default>>(
    &mut self,
    node: Node
) -> Node::OutputTy

fn visit_node<Node: InvocationCollectorNode<OutputTy = Node> + DummyAstNode>(
    &mut self,
    node: &mut Node
)

Trait Implementations

impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b>

fn flat_map_item(&mut self, node: P<Item>) -> SmallVec<[P<Item>; 1]>

fn flat_map_trait_item(
    &mut self,
    node: P<AssocItem>
) -> SmallVec<[P<AssocItem>; 1]>

fn flat_map_impl_item(
    &mut self,
    node: P<AssocItem>
) -> SmallVec<[P<AssocItem>; 1]>

fn flat_map_foreign_item(
    &mut self,
    node: P<ForeignItem>
) -> SmallVec<[P<ForeignItem>; 1]>

fn flat_map_variant(&mut self, node: Variant) -> SmallVec<[Variant; 1]>

fn flat_map_field_def(&mut self, node: FieldDef) -> SmallVec<[FieldDef; 1]>

fn flat_map_pat_field(&mut self, node: PatField) -> SmallVec<[PatField; 1]>

fn flat_map_expr_field(&mut self, node: ExprField) -> SmallVec<[ExprField; 1]>

fn flat_map_param(&mut self, node: Param) -> SmallVec<[Param; 1]>

fn flat_map_generic_param(
    &mut self,
    node: GenericParam
) -> SmallVec<[GenericParam; 1]>

fn flat_map_arm(&mut self, node: Arm) -> SmallVec<[Arm; 1]>

fn flat_map_stmt(&mut self, node: Stmt) -> SmallVec<[Stmt; 1]>

fn visit_crate(&mut self, node: &mut Crate)

fn visit_ty(&mut self, node: &mut P<Ty>)

fn visit_pat(&mut self, node: &mut P<Pat>)

fn visit_expr(&mut self, node: &mut P<Expr>)

fn visit_method_receiver_expr(&mut self, node: &mut P<Expr>)

This method is a hack to workaround unstable of stmt_expr_attributes. It can be removed once that feature is stabilized.

fn filter_map_expr(&mut self, node: P<Expr>) -> Option<P<Expr>>

fn visit_block(&mut self, node: &mut P<Block>)

fn visit_id(&mut self, id: &mut NodeId)

const VISIT_TOKENS: bool = false

Mutable token visiting only exists for the macro_rules token marker and should not be used otherwise. Token visitor would be entirely separate from the regular visitor if the marker didn’t have to visit AST fragments in nonterminal tokens.

fn visit_meta_list_item(&mut self, list_item: &mut NestedMetaItem)

fn visit_meta_item(&mut self, meta_item: &mut MetaItem)

fn visit_use_tree(&mut self, use_tree: &mut UseTree)

fn visit_fn_header(&mut self, header: &mut FnHeader)

fn visit_item_kind(&mut self, i: &mut ItemKind)

fn visit_fn_decl(&mut self, d: &mut P<FnDecl>)

fn visit_asyncness(&mut self, a: &mut Async)

fn visit_closure_binder(&mut self, b: &mut ClosureBinder)

fn visit_anon_const(&mut self, c: &mut AnonConst)

fn visit_generic_arg(&mut self, arg: &mut GenericArg)

fn visit_lifetime(&mut self, l: &mut Lifetime)

fn visit_constraint(&mut self, t: &mut AssocConstraint)

fn visit_foreign_mod(&mut self, nm: &mut ForeignMod)

fn visit_ident(&mut self, i: &mut Ident)

fn visit_path(&mut self, p: &mut Path)

fn visit_qself(&mut self, qs: &mut Option<P<QSelf>>)

fn visit_generic_args(&mut self, p: &mut GenericArgs)

fn visit_angle_bracketed_parameter_data(&mut self, p: &mut AngleBracketedArgs)

fn visit_parenthesized_parameter_data(&mut self, p: &mut ParenthesizedArgs)

fn visit_local(&mut self, l: &mut P<Local>)

fn visit_mac_call(&mut self, mac: &mut MacCall)

fn visit_macro_def(&mut self, def: &mut MacroDef)

fn visit_label(&mut self, label: &mut Label)

fn visit_attribute(&mut self, at: &mut Attribute)

fn visit_generics(&mut self, generics: &mut Generics)

fn visit_trait_ref(&mut self, tr: &mut TraitRef)

fn visit_poly_trait_ref(&mut self, p: &mut PolyTraitRef)

fn visit_variant_data(&mut self, vdata: &mut VariantData)

fn visit_param_bound(&mut self, tpb: &mut GenericBound)

fn visit_mt(&mut self, mt: &mut MutTy)

fn visit_where_clause(&mut self, where_clause: &mut WhereClause)

fn visit_where_predicate(&mut self, where_predicate: &mut WherePredicate)

fn visit_vis(&mut self, vis: &mut Visibility)

fn visit_span(&mut self, _sp: &mut Span)

fn visit_inline_asm(&mut self, asm: &mut InlineAsm)

fn visit_inline_asm_sym(&mut self, sym: &mut InlineAsmSym)

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 40 bytes