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Introduce 'ra lifetime name.

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`rustc_resolve` allocates many things in `ResolverArenas`. The lifetime
used for references into the arena is mostly `'a`, and sometimes `'b`.

This commit changes it to `'ra`, which is much more descriptive. The
commit also changes the order of lifetimes on a couple of structs so
that '`ra` is second last, before `'tcx`, and does other minor
renamings such as `'r` to `'a`.
This commit is contained in:
Nicholas Nethercote
2024-09-10 16:19:40 +10:00
parent c2f74c3f92
commit d4fc76cbf3
11 changed files with 482 additions and 471 deletions
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287
compiler/rustc_resolve/src/lib.rs
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@@ -113,14 +113,14 @@ impl Determinacy {
/// This enum is currently used only for early resolution (imports and macros),
/// but not for late resolution yet.
#[derive(Clone, Copy, Debug)]
enum Scope<'a> {
enum Scope<'ra> {
DeriveHelpers(LocalExpnId),
DeriveHelpersCompat,
MacroRules(MacroRulesScopeRef<'a>),
MacroRules(MacroRulesScopeRef<'ra>),
CrateRoot,
// The node ID is for reporting the `PROC_MACRO_DERIVE_RESOLUTION_FALLBACK`
// lint if it should be reported.
Module(Module<'a>, Option<NodeId>),
Module(Module<'ra>, Option<NodeId>),
MacroUsePrelude,
BuiltinAttrs,
ExternPrelude,
@@ -134,7 +134,7 @@ enum Scope<'a> {
/// This enum is currently used only for early resolution (imports and macros),
/// but not for late resolution yet.
#[derive(Clone, Copy, Debug)]
enum ScopeSet<'a> {
enum ScopeSet<'ra> {
/// All scopes with the given namespace.
All(Namespace),
/// Crate root, then extern prelude (used for mixed 2015-2018 mode in macros).
@@ -143,7 +143,7 @@ enum ScopeSet<'a> {
Macro(MacroKind),
/// All scopes with the given namespace, used for partially performing late resolution.
/// The node id enables lints and is used for reporting them.
Late(Namespace, Module<'a>, Option<NodeId>),
Late(Namespace, Module<'ra>, Option<NodeId>),
}
/// Everything you need to know about a name's location to resolve it.
@@ -151,17 +151,17 @@ enum ScopeSet<'a> {
/// This struct is currently used only for early resolution (imports and macros),
/// but not for late resolution yet.
#[derive(Clone, Copy, Debug)]
struct ParentScope<'a> {
module: Module<'a>,
struct ParentScope<'ra> {
module: Module<'ra>,
expansion: LocalExpnId,
macro_rules: MacroRulesScopeRef<'a>,
derives: &'a [ast::Path],
macro_rules: MacroRulesScopeRef<'ra>,
derives: &'ra [ast::Path],
}
impl<'a> ParentScope<'a> {
impl<'ra> ParentScope<'ra> {
/// Creates a parent scope with the passed argument used as the module scope component,
/// and other scope components set to default empty values.
fn module(module: Module<'a>, resolver: &Resolver<'a, '_>) -> ParentScope<'a> {
fn module(module: Module<'ra>, resolver: &Resolver<'ra, '_>) -> ParentScope<'ra> {
ParentScope {
module,
expansion: LocalExpnId::ROOT,
@@ -203,7 +203,7 @@ struct BindingError {
}
#[derive(Debug)]
enum ResolutionError<'a> {
enum ResolutionError<'ra> {
/// Error E0401: can't use type or const parameters from outer item.
GenericParamsFromOuterItem(Res, HasGenericParams, DefKind),
/// Error E0403: the name is already used for a type or const parameter in this generic
@@ -216,7 +216,7 @@ enum ResolutionError<'a> {
/// Error E0438: const is not a member of trait.
ConstNotMemberOfTrait(Ident, String, Option<Symbol>),
/// Error E0408: variable `{}` is not bound in all patterns.
VariableNotBoundInPattern(BindingError, ParentScope<'a>),
VariableNotBoundInPattern(BindingError, ParentScope<'ra>),
/// Error E0409: variable `{}` is bound in inconsistent ways within the same match arm.
VariableBoundWithDifferentMode(Symbol, Span),
/// Error E0415: identifier is bound more than once in this parameter list.
@@ -236,7 +236,7 @@ enum ResolutionError<'a> {
segment: Option<Symbol>,
label: String,
suggestion: Option<Suggestion>,
module: Option<ModuleOrUniformRoot<'a>>,
module: Option<ModuleOrUniformRoot<'ra>>,
},
/// Error E0434: can't capture dynamic environment in a fn item.
CannotCaptureDynamicEnvironmentInFnItem,
@@ -377,12 +377,12 @@ impl<'a> From<&'a ast::PathSegment> for Segment {
/// items are visible in their whole block, while `Res`es only from the place they are defined
/// forward.
#[derive(Debug, Copy, Clone)]
enum LexicalScopeBinding<'a> {
Item(NameBinding<'a>),
enum LexicalScopeBinding<'ra> {
Item(NameBinding<'ra>),
Res(Res),
}
impl<'a> LexicalScopeBinding<'a> {
impl<'ra> LexicalScopeBinding<'ra> {
fn res(self) -> Res {
match self {
LexicalScopeBinding::Item(binding) => binding.res(),
@@ -392,9 +392,9 @@ impl<'a> LexicalScopeBinding<'a> {
}
#[derive(Copy, Clone, PartialEq, Debug)]
enum ModuleOrUniformRoot<'a> {
enum ModuleOrUniformRoot<'ra> {
/// Regular module.
Module(Module<'a>),
Module(Module<'ra>),
/// Virtual module that denotes resolution in crate root with fallback to extern prelude.
CrateRootAndExternPrelude,
@@ -410,8 +410,8 @@ enum ModuleOrUniformRoot<'a> {
}
#[derive(Debug)]
enum PathResult<'a> {
Module(ModuleOrUniformRoot<'a>),
enum PathResult<'ra> {
Module(ModuleOrUniformRoot<'ra>),
NonModule(PartialRes),
Indeterminate,
Failed {
@@ -432,20 +432,20 @@ enum PathResult<'a> {
/// ```
///
/// In this case, `module` will point to `a`.
module: Option<ModuleOrUniformRoot<'a>>,
module: Option<ModuleOrUniformRoot<'ra>>,
/// The segment name of target
segment_name: Symbol,
},
}
impl<'a> PathResult<'a> {
impl<'ra> PathResult<'ra> {
fn failed(
ident: Ident,
is_error_from_last_segment: bool,
finalize: bool,
module: Option<ModuleOrUniformRoot<'a>>,
module: Option<ModuleOrUniformRoot<'ra>>,
label_and_suggestion: impl FnOnce() -> (String, Option<Suggestion>),
) -> PathResult<'a> {
) -> PathResult<'ra> {
let (label, suggestion) =
if finalize { label_and_suggestion() } else { (String::new(), None) };
PathResult::Failed {
@@ -518,7 +518,7 @@ impl BindingKey {
}
}
type Resolutions<'a> = RefCell<FxIndexMap<BindingKey, &'a RefCell<NameResolution<'a>>>>;
type Resolutions<'ra> = RefCell<FxIndexMap<BindingKey, &'ra RefCell<NameResolution<'ra>>>>;
/// One node in the tree of modules.
///
@@ -531,15 +531,15 @@ type Resolutions<'a> = RefCell<FxIndexMap<BindingKey, &'a RefCell<NameResolution
/// * curly-braced block with statements
///
/// You can use [`ModuleData::kind`] to determine the kind of module this is.
struct ModuleData<'a> {
struct ModuleData<'ra> {
/// The direct parent module (it may not be a `mod`, however).
parent: Option<Module<'a>>,
parent: Option<Module<'ra>>,
/// What kind of module this is, because this may not be a `mod`.
kind: ModuleKind,
/// Mapping between names and their (possibly in-progress) resolutions in this module.
/// Resolutions in modules from other crates are not populated until accessed.
lazy_resolutions: Resolutions<'a>,
lazy_resolutions: Resolutions<'ra>,
/// True if this is a module from other crate that needs to be populated on access.
populate_on_access: Cell<bool>,
@@ -549,11 +549,11 @@ struct ModuleData<'a> {
/// Whether `#[no_implicit_prelude]` is active.
no_implicit_prelude: bool,
glob_importers: RefCell<Vec<Import<'a>>>,
globs: RefCell<Vec<Import<'a>>>,
glob_importers: RefCell<Vec<Import<'ra>>>,
globs: RefCell<Vec<Import<'ra>>>,
/// Used to memoize the traits in this module for faster searches through all traits in scope.
traits: RefCell<Option<Box<[(Ident, NameBinding<'a>)]>>>,
traits: RefCell<Option<Box<[(Ident, NameBinding<'ra>)]>>>,
/// Span of the module itself. Used for error reporting.
span: Span,
@@ -565,11 +565,11 @@ struct ModuleData<'a> {
/// so we can use referential equality to compare them.
#[derive(Clone, Copy, PartialEq, Eq, Hash)]
#[rustc_pass_by_value]
struct Module<'a>(Interned<'a, ModuleData<'a>>);
struct Module<'ra>(Interned<'ra, ModuleData<'ra>>);
impl<'a> ModuleData<'a> {
impl<'ra> ModuleData<'ra> {
fn new(
parent: Option<Module<'a>>,
parent: Option<Module<'ra>>,
kind: ModuleKind,
expansion: ExpnId,
span: Span,
@@ -595,11 +595,11 @@ impl<'a> ModuleData<'a> {
}
}
impl<'a> Module<'a> {
impl<'ra> Module<'ra> {
fn for_each_child<'tcx, R, F>(self, resolver: &mut R, mut f: F)
where
R: AsMut<Resolver<'a, 'tcx>>,
F: FnMut(&mut R, Ident, Namespace, NameBinding<'a>),
R: AsMut<Resolver<'ra, 'tcx>>,
F: FnMut(&mut R, Ident, Namespace, NameBinding<'ra>),
{
for (key, name_resolution) in resolver.as_mut().resolutions(self).borrow().iter() {
if let Some(binding) = name_resolution.borrow().binding {
@@ -611,7 +611,7 @@ impl<'a> Module<'a> {
/// This modifies `self` in place. The traits will be stored in `self.traits`.
fn ensure_traits<'tcx, R>(self, resolver: &mut R)
where
R: AsMut<Resolver<'a, 'tcx>>,
R: AsMut<Resolver<'ra, 'tcx>>,
{
let mut traits = self.traits.borrow_mut();
if traits.is_none() {
@@ -656,7 +656,7 @@ impl<'a> Module<'a> {
matches!(self.kind, ModuleKind::Def(DefKind::Trait, _, _))
}
fn nearest_item_scope(self) -> Module<'a> {
fn nearest_item_scope(self) -> Module<'ra> {
match self.kind {
ModuleKind::Def(DefKind::Enum | DefKind::Trait, ..) => {
self.parent.expect("enum or trait module without a parent")
@@ -686,15 +686,15 @@ impl<'a> Module<'a> {
}
}
impl<'a> std::ops::Deref for Module<'a> {
type Target = ModuleData<'a>;
impl<'ra> std::ops::Deref for Module<'ra> {
type Target = ModuleData<'ra>;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl<'a> fmt::Debug for Module<'a> {
impl<'ra> fmt::Debug for Module<'ra> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "{:?}", self.res())
}
@@ -702,9 +702,9 @@ impl<'a> fmt::Debug for Module<'a> {
/// Records a possibly-private value, type, or module definition.
#[derive(Clone, Copy, Debug)]
struct NameBindingData<'a> {
kind: NameBindingKind<'a>,
ambiguity: Option<(NameBinding<'a>, AmbiguityKind)>,
struct NameBindingData<'ra> {
kind: NameBindingKind<'ra>,
ambiguity: Option<(NameBinding<'ra>, AmbiguityKind)>,
/// Produce a warning instead of an error when reporting ambiguities inside this binding.
/// May apply to indirect ambiguities under imports, so `ambiguity.is_some()` is not required.
warn_ambiguity: bool,
@@ -715,26 +715,26 @@ struct NameBindingData<'a> {
/// All name bindings are unique and allocated on a same arena,
/// so we can use referential equality to compare them.
type NameBinding<'a> = Interned<'a, NameBindingData<'a>>;
type NameBinding<'ra> = Interned<'ra, NameBindingData<'ra>>;
trait ToNameBinding<'a> {
fn to_name_binding(self, arenas: &'a ResolverArenas<'a>) -> NameBinding<'a>;
trait ToNameBinding<'ra> {
fn to_name_binding(self, arenas: &'ra ResolverArenas<'ra>) -> NameBinding<'ra>;
}
impl<'a> ToNameBinding<'a> for NameBinding<'a> {
fn to_name_binding(self, _: &'a ResolverArenas<'a>) -> NameBinding<'a> {
impl<'ra> ToNameBinding<'ra> for NameBinding<'ra> {
fn to_name_binding(self, _: &'ra ResolverArenas<'ra>) -> NameBinding<'ra> {
self
}
}
#[derive(Clone, Copy, Debug)]
enum NameBindingKind<'a> {
enum NameBindingKind<'ra> {
Res(Res),
Module(Module<'a>),
Import { binding: NameBinding<'a>, import: Import<'a> },
Module(Module<'ra>),
Import { binding: NameBinding<'ra>, import: Import<'ra> },
}
impl<'a> NameBindingKind<'a> {
impl<'ra> NameBindingKind<'ra> {
/// Is this a name binding of an import?
fn is_import(&self) -> bool {
matches!(*self, NameBindingKind::Import { .. })
@@ -742,12 +742,12 @@ impl<'a> NameBindingKind<'a> {
}
#[derive(Debug)]
struct PrivacyError<'a> {
struct PrivacyError<'ra> {
ident: Ident,
binding: NameBinding<'a>,
binding: NameBinding<'ra>,
dedup_span: Span,
outermost_res: Option<(Res, Ident)>,
parent_scope: ParentScope<'a>,
parent_scope: ParentScope<'ra>,
/// Is the format `use a::{b,c}`?
single_nested: bool,
}
@@ -812,18 +812,18 @@ enum AmbiguityErrorMisc {
None,
}
struct AmbiguityError<'a> {
struct AmbiguityError<'ra> {
kind: AmbiguityKind,
ident: Ident,
b1: NameBinding<'a>,
b2: NameBinding<'a>,
b1: NameBinding<'ra>,
b2: NameBinding<'ra>,
misc1: AmbiguityErrorMisc,
misc2: AmbiguityErrorMisc,
warning: bool,
}
impl<'a> NameBindingData<'a> {
fn module(&self) -> Option<Module<'a>> {
impl<'ra> NameBindingData<'ra> {
fn module(&self) -> Option<Module<'ra>> {
match self.kind {
NameBindingKind::Module(module) => Some(module),
NameBindingKind::Import { binding, .. } => binding.module(),
@@ -947,8 +947,8 @@ impl<'a> NameBindingData<'a> {
}
#[derive(Default, Clone)]
struct ExternPreludeEntry<'a> {
binding: Option<NameBinding<'a>>,
struct ExternPreludeEntry<'ra> {
binding: Option<NameBinding<'ra>>,
introduced_by_item: bool,
}
@@ -985,16 +985,16 @@ impl MacroData {
/// The main resolver class.
///
/// This is the visitor that walks the whole crate.
pub struct Resolver<'a, 'tcx> {
pub struct Resolver<'ra, 'tcx> {
tcx: TyCtxt<'tcx>,
/// Item with a given `LocalDefId` was defined during macro expansion with ID `ExpnId`.
expn_that_defined: FxHashMap<LocalDefId, ExpnId>,
graph_root: Module<'a>,
graph_root: Module<'ra>,
prelude: Option<Module<'a>>,
extern_prelude: FxHashMap<Ident, ExternPreludeEntry<'a>>,
prelude: Option<Module<'ra>>,
extern_prelude: FxHashMap<Ident, ExternPreludeEntry<'ra>>,
/// N.B., this is used only for better diagnostics, not name resolution itself.
field_names: LocalDefIdMap<Vec<Ident>>,
@@ -1004,10 +1004,10 @@ pub struct Resolver<'a, 'tcx> {
field_visibility_spans: FxHashMap<DefId, Vec<Span>>,
/// All imports known to succeed or fail.
determined_imports: Vec<Import<'a>>,
determined_imports: Vec<Import<'ra>>,
/// All non-determined imports.
indeterminate_imports: Vec<Import<'a>>,
indeterminate_imports: Vec<Import<'ra>>,
// Spans for local variables found during pattern resolution.
// Used for suggestions during error reporting.
@@ -1018,7 +1018,7 @@ pub struct Resolver<'a, 'tcx> {
/// Resolutions for import nodes, which have multiple resolutions in different namespaces.
import_res_map: NodeMap<PerNS<Option<Res>>>,
/// An import will be inserted into this map if it has been used.
import_use_map: FxHashMap<Import<'a>, Used>,
import_use_map: FxHashMap<Import<'ra>, Used>,
/// Resolutions for labels (node IDs of their corresponding blocks or loops).
label_res_map: NodeMap<NodeId>,
/// Resolutions for lifetimes.
@@ -1045,13 +1045,13 @@ pub struct Resolver<'a, 'tcx> {
///
/// There will be an anonymous module created around `g` with the ID of the
/// entry block for `f`.
block_map: NodeMap<Module<'a>>,
block_map: NodeMap<Module<'ra>>,
/// A fake module that contains no definition and no prelude. Used so that
/// some AST passes can generate identifiers that only resolve to local or
/// lang items.
empty_module: Module<'a>,
module_map: FxHashMap<DefId, Module<'a>>,
binding_parent_modules: FxHashMap<NameBinding<'a>, Module<'a>>,
empty_module: Module<'ra>,
module_map: FxHashMap<DefId, Module<'ra>>,
binding_parent_modules: FxHashMap<NameBinding<'ra>, Module<'ra>>,
underscore_disambiguator: u32,
/// Disambiguator for anonymous adts.
@@ -1065,57 +1065,57 @@ pub struct Resolver<'a, 'tcx> {
maybe_unused_trait_imports: FxIndexSet<LocalDefId>,
/// Privacy errors are delayed until the end in order to deduplicate them.
privacy_errors: Vec<PrivacyError<'a>>,
privacy_errors: Vec<PrivacyError<'ra>>,
/// Ambiguity errors are delayed for deduplication.
ambiguity_errors: Vec<AmbiguityError<'a>>,
ambiguity_errors: Vec<AmbiguityError<'ra>>,
/// `use` injections are delayed for better placement and deduplication.
use_injections: Vec<UseError<'tcx>>,
/// Crate-local macro expanded `macro_export` referred to by a module-relative path.
macro_expanded_macro_export_errors: BTreeSet<(Span, Span)>,
arenas: &'a ResolverArenas<'a>,
dummy_binding: NameBinding<'a>,
builtin_types_bindings: FxHashMap<Symbol, NameBinding<'a>>,
builtin_attrs_bindings: FxHashMap<Symbol, NameBinding<'a>>,
registered_tool_bindings: FxHashMap<Ident, NameBinding<'a>>,
arenas: &'ra ResolverArenas<'ra>,
dummy_binding: NameBinding<'ra>,
builtin_types_bindings: FxHashMap<Symbol, NameBinding<'ra>>,
builtin_attrs_bindings: FxHashMap<Symbol, NameBinding<'ra>>,
registered_tool_bindings: FxHashMap<Ident, NameBinding<'ra>>,
/// Binding for implicitly declared names that come with a module,
/// like `self` (not yet used), or `crate`/`$crate` (for root modules).
module_self_bindings: FxHashMap<Module<'a>, NameBinding<'a>>,
module_self_bindings: FxHashMap<Module<'ra>, NameBinding<'ra>>,
used_extern_options: FxHashSet<Symbol>,
macro_names: FxHashSet<Ident>,
builtin_macros: FxHashMap<Symbol, BuiltinMacroState>,
registered_tools: &'tcx RegisteredTools,
macro_use_prelude: FxHashMap<Symbol, NameBinding<'a>>,
macro_use_prelude: FxHashMap<Symbol, NameBinding<'ra>>,
macro_map: FxHashMap<DefId, MacroData>,
dummy_ext_bang: Lrc<SyntaxExtension>,
dummy_ext_derive: Lrc<SyntaxExtension>,
non_macro_attr: MacroData,
local_macro_def_scopes: FxHashMap<LocalDefId, Module<'a>>,
ast_transform_scopes: FxHashMap<LocalExpnId, Module<'a>>,
local_macro_def_scopes: FxHashMap<LocalDefId, Module<'ra>>,
ast_transform_scopes: FxHashMap<LocalExpnId, Module<'ra>>,
unused_macros: FxHashMap<LocalDefId, (NodeId, Ident)>,
unused_macro_rules: FxHashMap<(LocalDefId, usize), (Ident, Span)>,
proc_macro_stubs: FxHashSet<LocalDefId>,
/// Traces collected during macro resolution and validated when it's complete.
single_segment_macro_resolutions:
Vec<(Ident, MacroKind, ParentScope<'a>, Option<NameBinding<'a>>)>,
Vec<(Ident, MacroKind, ParentScope<'ra>, Option<NameBinding<'ra>>)>,
multi_segment_macro_resolutions:
Vec<(Vec<Segment>, Span, MacroKind, ParentScope<'a>, Option<Res>, Namespace)>,
builtin_attrs: Vec<(Ident, ParentScope<'a>)>,
Vec<(Vec<Segment>, Span, MacroKind, ParentScope<'ra>, Option<Res>, Namespace)>,
builtin_attrs: Vec<(Ident, ParentScope<'ra>)>,
/// `derive(Copy)` marks items they are applied to so they are treated specially later.
/// Derive macros cannot modify the item themselves and have to store the markers in the global
/// context, so they attach the markers to derive container IDs using this resolver table.
containers_deriving_copy: FxHashSet<LocalExpnId>,
/// Parent scopes in which the macros were invoked.
/// FIXME: `derives` are missing in these parent scopes and need to be taken from elsewhere.
invocation_parent_scopes: FxHashMap<LocalExpnId, ParentScope<'a>>,
invocation_parent_scopes: FxHashMap<LocalExpnId, ParentScope<'ra>>,
/// `macro_rules` scopes *produced* by expanding the macro invocations,
/// include all the `macro_rules` items and other invocations generated by them.
output_macro_rules_scopes: FxHashMap<LocalExpnId, MacroRulesScopeRef<'a>>,
output_macro_rules_scopes: FxHashMap<LocalExpnId, MacroRulesScopeRef<'ra>>,
/// `macro_rules` scopes produced by `macro_rules` item definitions.
macro_rules_scopes: FxHashMap<LocalDefId, MacroRulesScopeRef<'a>>,
macro_rules_scopes: FxHashMap<LocalDefId, MacroRulesScopeRef<'ra>>,
/// Helper attributes that are in scope for the given expansion.
helper_attrs: FxHashMap<LocalExpnId, Vec<(Ident, NameBinding<'a>)>>,
helper_attrs: FxHashMap<LocalExpnId, Vec<(Ident, NameBinding<'ra>)>>,
/// Ready or in-progress results of resolving paths inside the `#[derive(...)]` attribute
/// with the given `ExpnId`.
derive_data: FxHashMap<LocalExpnId, DeriveData>,
@@ -1123,9 +1123,9 @@ pub struct Resolver<'a, 'tcx> {
/// Avoid duplicated errors for "name already defined".
name_already_seen: FxHashMap<Symbol, Span>,
potentially_unused_imports: Vec<Import<'a>>,
potentially_unused_imports: Vec<Import<'ra>>,
potentially_unnecessary_qualifications: Vec<UnnecessaryQualification<'a>>,
potentially_unnecessary_qualifications: Vec<UnnecessaryQualification<'ra>>,
/// Table for mapping struct IDs into struct constructor IDs,
/// it's not used during normal resolution, only for better error reporting.
@@ -1186,28 +1186,29 @@ pub struct Resolver<'a, 'tcx> {
current_crate_outer_attr_insert_span: Span,
}
/// Nothing really interesting here; it just provides memory for the rest of the crate.
/// This provides memory for the rest of the crate. The `'ra` lifetime that is
/// used by many types in this crate is an abbreviation of `ResolverArenas`.
#[derive(Default)]
pub struct ResolverArenas<'a> {
modules: TypedArena<ModuleData<'a>>,
local_modules: RefCell<Vec<Module<'a>>>,
imports: TypedArena<ImportData<'a>>,
name_resolutions: TypedArena<RefCell<NameResolution<'a>>>,
pub struct ResolverArenas<'ra> {
modules: TypedArena<ModuleData<'ra>>,
local_modules: RefCell<Vec<Module<'ra>>>,
imports: TypedArena<ImportData<'ra>>,
name_resolutions: TypedArena<RefCell<NameResolution<'ra>>>,
ast_paths: TypedArena<ast::Path>,
dropless: DroplessArena,
}
impl<'a> ResolverArenas<'a> {
impl<'ra> ResolverArenas<'ra> {
fn new_module(
&'a self,
parent: Option<Module<'a>>,
&'ra self,
parent: Option<Module<'ra>>,
kind: ModuleKind,
expn_id: ExpnId,
span: Span,
no_implicit_prelude: bool,
module_map: &mut FxHashMap<DefId, Module<'a>>,
module_self_bindings: &mut FxHashMap<Module<'a>, NameBinding<'a>>,
) -> Module<'a> {
module_map: &mut FxHashMap<DefId, Module<'ra>>,
module_self_bindings: &mut FxHashMap<Module<'ra>, NameBinding<'ra>>,
) -> Module<'ra> {
let module = Module(Interned::new_unchecked(self.modules.alloc(ModuleData::new(
parent,
kind,
@@ -1227,37 +1228,37 @@ impl<'a> ResolverArenas<'a> {
}
module
}
fn local_modules(&'a self) -> std::cell::Ref<'a, Vec<Module<'a>>> {
fn local_modules(&'ra self) -> std::cell::Ref<'ra, Vec<Module<'ra>>> {
self.local_modules.borrow()
}
fn alloc_name_binding(&'a self, name_binding: NameBindingData<'a>) -> NameBinding<'a> {
fn alloc_name_binding(&'ra self, name_binding: NameBindingData<'ra>) -> NameBinding<'ra> {
Interned::new_unchecked(self.dropless.alloc(name_binding))
}
fn alloc_import(&'a self, import: ImportData<'a>) -> Import<'a> {
fn alloc_import(&'ra self, import: ImportData<'ra>) -> Import<'ra> {
Interned::new_unchecked(self.imports.alloc(import))
}
fn alloc_name_resolution(&'a self) -> &'a RefCell<NameResolution<'a>> {
fn alloc_name_resolution(&'ra self) -> &'ra RefCell<NameResolution<'ra>> {
self.name_resolutions.alloc(Default::default())
}
fn alloc_macro_rules_scope(&'a self, scope: MacroRulesScope<'a>) -> MacroRulesScopeRef<'a> {
fn alloc_macro_rules_scope(&'ra self, scope: MacroRulesScope<'ra>) -> MacroRulesScopeRef<'ra> {
Interned::new_unchecked(self.dropless.alloc(Cell::new(scope)))
}
fn alloc_macro_rules_binding(
&'a self,
binding: MacroRulesBinding<'a>,
) -> &'a MacroRulesBinding<'a> {
&'ra self,
binding: MacroRulesBinding<'ra>,
) -> &'ra MacroRulesBinding<'ra> {
self.dropless.alloc(binding)
}
fn alloc_ast_paths(&'a self, paths: &[ast::Path]) -> &'a [ast::Path] {
fn alloc_ast_paths(&'ra self, paths: &[ast::Path]) -> &'ra [ast::Path] {
self.ast_paths.alloc_from_iter(paths.iter().cloned())
}
fn alloc_pattern_spans(&'a self, spans: impl Iterator<Item = Span>) -> &'a [Span] {
fn alloc_pattern_spans(&'ra self, spans: impl Iterator<Item = Span>) -> &'ra [Span] {
self.dropless.alloc_from_iter(spans)
}
}
impl<'a, 'tcx> AsMut<Resolver<'a, 'tcx>> for Resolver<'a, 'tcx> {
fn as_mut(&mut self) -> &mut Resolver<'a, 'tcx> {
impl<'ra, 'tcx> AsMut<Resolver<'ra, 'tcx>> for Resolver<'ra, 'tcx> {
fn as_mut(&mut self) -> &mut Resolver<'ra, 'tcx> {
self
}
}
@@ -1341,14 +1342,14 @@ impl<'tcx> Resolver<'_, 'tcx> {
}
}
impl<'a, 'tcx> Resolver<'a, 'tcx> {
impl<'ra, 'tcx> Resolver<'ra, 'tcx> {
pub fn new(
tcx: TyCtxt<'tcx>,
attrs: &[ast::Attribute],
crate_span: Span,
current_crate_outer_attr_insert_span: Span,
arenas: &'a ResolverArenas<'a>,
) -> Resolver<'a, 'tcx> {
arenas: &'ra ResolverArenas<'ra>,
) -> Resolver<'ra, 'tcx> {
let root_def_id = CRATE_DEF_ID.to_def_id();
let mut module_map = FxHashMap::default();
let mut module_self_bindings = FxHashMap::default();
@@ -1541,12 +1542,12 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
fn new_module(
&mut self,
parent: Option<Module<'a>>,
parent: Option<Module<'ra>>,
kind: ModuleKind,
expn_id: ExpnId,
span: Span,
no_implicit_prelude: bool,
) -> Module<'a> {
) -> Module<'ra> {
let module_map = &mut self.module_map;
let module_self_bindings = &mut self.module_self_bindings;
self.arenas.new_module(
@@ -1578,7 +1579,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
&mut self.lint_buffer
}
pub fn arenas() -> ResolverArenas<'a> {
pub fn arenas() -> ResolverArenas<'ra> {
Default::default()
}
@@ -1719,8 +1720,8 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
fn traits_in_scope(
&mut self,
current_trait: Option<Module<'a>>,
parent_scope: &ParentScope<'a>,
current_trait: Option<Module<'ra>>,
parent_scope: &ParentScope<'ra>,
ctxt: SyntaxContext,
assoc_item: Option<(Symbol, Namespace)>,
) -> Vec<TraitCandidate> {
@@ -1754,7 +1755,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
fn traits_in_module(
&mut self,
module: Module<'a>,
module: Module<'ra>,
assoc_item: Option<(Symbol, Namespace)>,
found_traits: &mut Vec<TraitCandidate>,
) {
@@ -1776,7 +1777,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
// associated items.
fn trait_may_have_item(
&mut self,
trait_module: Option<Module<'a>>,
trait_module: Option<Module<'ra>>,
assoc_item: Option<(Symbol, Namespace)>,
) -> bool {
match (trait_module, assoc_item) {
@@ -1822,7 +1823,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
BindingKey { ident, ns, disambiguator }
}
fn resolutions(&mut self, module: Module<'a>) -> &'a Resolutions<'a> {
fn resolutions(&mut self, module: Module<'ra>) -> &'ra Resolutions<'ra> {
if module.populate_on_access.get() {
module.populate_on_access.set(false);
self.build_reduced_graph_external(module);
@@ -1832,9 +1833,9 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
fn resolution(
&mut self,
module: Module<'a>,
module: Module<'ra>,
key: BindingKey,
) -> &'a RefCell<NameResolution<'a>> {
) -> &'ra RefCell<NameResolution<'ra>> {
*self
.resolutions(module)
.borrow_mut()
@@ -1860,14 +1861,14 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
false
}
fn record_use(&mut self, ident: Ident, used_binding: NameBinding<'a>, used: Used) {
fn record_use(&mut self, ident: Ident, used_binding: NameBinding<'ra>, used: Used) {
self.record_use_inner(ident, used_binding, used, used_binding.warn_ambiguity);
}
fn record_use_inner(
&mut self,
ident: Ident,
used_binding: NameBinding<'a>,
used_binding: NameBinding<'ra>,
used: Used,
warn_ambiguity: bool,
) {
@@ -1929,7 +1930,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
}
}
fn resolve_crate_root(&mut self, ident: Ident) -> Module<'a> {
fn resolve_crate_root(&mut self, ident: Ident) -> Module<'ra> {
debug!("resolve_crate_root({:?})", ident);
let mut ctxt = ident.span.ctxt();
let mark = if ident.name == kw::DollarCrate {
@@ -2002,7 +2003,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
module
}
fn resolve_self(&mut self, ctxt: &mut SyntaxContext, module: Module<'a>) -> Module<'a> {
fn resolve_self(&mut self, ctxt: &mut SyntaxContext, module: Module<'ra>) -> Module<'ra> {
let mut module = self.expect_module(module.nearest_parent_mod());
while module.span.ctxt().normalize_to_macros_2_0() != *ctxt {
let parent = module.parent.unwrap_or_else(|| self.expn_def_scope(ctxt.remove_mark()));
@@ -2026,12 +2027,12 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
fn is_accessible_from(
&self,
vis: ty::Visibility<impl Into<DefId>>,
module: Module<'a>,
module: Module<'ra>,
) -> bool {
vis.is_accessible_from(module.nearest_parent_mod(), self.tcx)
}
fn set_binding_parent_module(&mut self, binding: NameBinding<'a>, module: Module<'a>) {
fn set_binding_parent_module(&mut self, binding: NameBinding<'ra>, module: Module<'ra>) {
if let Some(old_module) = self.binding_parent_modules.insert(binding, module) {
if module != old_module {
span_bug!(binding.span, "parent module is reset for binding");
@@ -2041,8 +2042,8 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
fn disambiguate_macro_rules_vs_modularized(
&self,
macro_rules: NameBinding<'a>,
modularized: NameBinding<'a>,
macro_rules: NameBinding<'ra>,
modularized: NameBinding<'ra>,
) -> bool {
// Some non-controversial subset of ambiguities "modularized macro name" vs "macro_rules"
// is disambiguated to mitigate regressions from macro modularization.
@@ -2059,7 +2060,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
}
}
fn extern_prelude_get(&mut self, ident: Ident, finalize: bool) -> Option<NameBinding<'a>> {
fn extern_prelude_get(&mut self, ident: Ident, finalize: bool) -> Option<NameBinding<'ra>> {
if ident.is_path_segment_keyword() {
// Make sure `self`, `super` etc produce an error when passed to here.
return None;
@@ -2108,7 +2109,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
&mut self,
path_str: &str,
ns: Namespace,
parent_scope: ParentScope<'a>,
parent_scope: ParentScope<'ra>,
) -> Option<Res> {
let mut segments =
Vec::from_iter(path_str.split("::").map(Ident::from_str).map(Segment::from_ident));