src/librustc_hir/arena.rs

   1 /// This declares a list of types which can be allocated by `Arena`.
   2 ///
   3 /// The `few` modifier will cause allocation to use the shared arena and recording the destructor.
   4 /// This is faster and more memory efficient if there's only a few allocations of the type.
   5 /// Leaving `few` out will cause the type to get its own dedicated `TypedArena` which is
   6 /// faster and more memory efficient if there is lots of allocations.
   7 ///
   8 /// Specifying the `decode` modifier will add decode impls for `&T` and `&[T]`,
   9 /// where `T` is the type listed. These impls will appear in the implement_ty_decoder! macro.
  10 #[macro_export]
  11 macro_rules! arena_types {
  12     ($macro:path, $args:tt, $tcx:lifetime) => (
  13         $macro!($args, [
  14             // HIR types
  15             [few] hir_krate: rustc_hir::Crate<$tcx>,
  16             [] arm: rustc_hir::Arm<$tcx>,
  17             [] attribute: rustc_ast::ast::Attribute,
  18             [] block: rustc_hir::Block<$tcx>,
  19             [] bare_fn_ty: rustc_hir::BareFnTy<$tcx>,
  20             [few] global_asm: rustc_hir::GlobalAsm,
  21             [] generic_arg: rustc_hir::GenericArg<$tcx>,
  22             [] generic_args: rustc_hir::GenericArgs<$tcx>,
  23             [] generic_bound: rustc_hir::GenericBound<$tcx>,
  24             [] generic_param: rustc_hir::GenericParam<$tcx>,
  25             [] expr: rustc_hir::Expr<$tcx>,
  26             [] field: rustc_hir::Field<$tcx>,
  27             [] field_pat: rustc_hir::FieldPat<$tcx>,
  28             [] fn_decl: rustc_hir::FnDecl<$tcx>,
  29             [] foreign_item: rustc_hir::ForeignItem<$tcx>,
  30             [] impl_item_ref: rustc_hir::ImplItemRef<$tcx>,
  31             [] inline_asm: rustc_hir::LlvmInlineAsm<$tcx>,
  32             [] local: rustc_hir::Local<$tcx>,
  33             [few] macro_def: rustc_hir::MacroDef<$tcx>,
  34             [] param: rustc_hir::Param<$tcx>,
  35             [] pat: rustc_hir::Pat<$tcx>,
  36             [] path: rustc_hir::Path<$tcx>,
  37             [] path_segment: rustc_hir::PathSegment<$tcx>,
  38             [] poly_trait_ref: rustc_hir::PolyTraitRef<$tcx>,
  39             [] qpath: rustc_hir::QPath<$tcx>,
  40             [] stmt: rustc_hir::Stmt<$tcx>,
  41             [] struct_field: rustc_hir::StructField<$tcx>,
  42             [] trait_item_ref: rustc_hir::TraitItemRef,
  43             [] ty: rustc_hir::Ty<$tcx>,
  44             [] type_binding: rustc_hir::TypeBinding<$tcx>,
  45             [] variant: rustc_hir::Variant<$tcx>,
  46             [] where_predicate: rustc_hir::WherePredicate<$tcx>,
  47         ], $tcx);
  48     )
  49 }