compiler/rustc_hir/src/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             [] asm_operand: (rustc_hir::InlineAsmOperand<$tcx>, Span),
  18             [] asm_template: rustc_ast::InlineAsmTemplatePiece,
  19             [] attribute: rustc_ast::Attribute,
  20             [] block: rustc_hir::Block<$tcx>,
  21             [] bare_fn_ty: rustc_hir::BareFnTy<$tcx>,
  22             [few] global_asm: rustc_hir::GlobalAsm,
  23             [] generic_arg: rustc_hir::GenericArg<$tcx>,
  24             [] generic_args: rustc_hir::GenericArgs<$tcx>,
  25             [] generic_bound: rustc_hir::GenericBound<$tcx>,
  26             [] generic_param: rustc_hir::GenericParam<$tcx>,
  27             [] expr: rustc_hir::Expr<$tcx>,
  28             [] expr_field: rustc_hir::ExprField<$tcx>,
  29             [] pat_field: rustc_hir::PatField<$tcx>,
  30             [] fn_decl: rustc_hir::FnDecl<$tcx>,
  31             [] foreign_item: rustc_hir::ForeignItem<$tcx>,
  32             [few] foreign_item_ref: rustc_hir::ForeignItemRef<$tcx>,
  33             [] impl_item_ref: rustc_hir::ImplItemRef<$tcx>,
  34             [few] inline_asm: rustc_hir::InlineAsm<$tcx>,
  35             [few] llvm_inline_asm: rustc_hir::LlvmInlineAsm<$tcx>,
  36             [] local: rustc_hir::Local<$tcx>,
  37             [few] macro_def: rustc_hir::MacroDef<$tcx>,
  38             [] param: rustc_hir::Param<$tcx>,
  39             [] pat: rustc_hir::Pat<$tcx>,
  40             [] path: rustc_hir::Path<$tcx>,
  41             [] path_segment: rustc_hir::PathSegment<$tcx>,
  42             [] poly_trait_ref: rustc_hir::PolyTraitRef<$tcx>,
  43             [] qpath: rustc_hir::QPath<$tcx>,
  44             [] stmt: rustc_hir::Stmt<$tcx>,
  45             [] field_def: rustc_hir::FieldDef<$tcx>,
  46             [] trait_item_ref: rustc_hir::TraitItemRef,
  47             [] ty: rustc_hir::Ty<$tcx>,
  48             [] type_binding: rustc_hir::TypeBinding<$tcx>,
  49             [] variant: rustc_hir::Variant<$tcx>,
  50             [] where_predicate: rustc_hir::WherePredicate<$tcx>,
  51         ], $tcx);
  52     )
  53 }