rustc_metadata/rmeta/
parameterized.rs

1use std::hash::Hash;
2
3use rustc_data_structures::unord::UnordMap;
4use rustc_hir::def_id::DefIndex;
5use rustc_index::{Idx, IndexVec};
6use rustc_middle::ty::{Binder, EarlyBinder};
7use rustc_span::Symbol;
8
9use crate::rmeta::{LazyArray, LazyValue};
10
11pub(crate) trait ParameterizedOverTcx: 'static {
12    type Value<'tcx>;
13}
14
15impl<T: ParameterizedOverTcx> ParameterizedOverTcx for Option<T> {
16    type Value<'tcx> = Option<T::Value<'tcx>>;
17}
18
19impl<A: ParameterizedOverTcx, B: ParameterizedOverTcx> ParameterizedOverTcx for (A, B) {
20    type Value<'tcx> = (A::Value<'tcx>, B::Value<'tcx>);
21}
22
23impl<T: ParameterizedOverTcx> ParameterizedOverTcx for Vec<T> {
24    type Value<'tcx> = Vec<T::Value<'tcx>>;
25}
26
27impl<I: Idx + 'static, T: ParameterizedOverTcx> ParameterizedOverTcx for IndexVec<I, T> {
28    type Value<'tcx> = IndexVec<I, T::Value<'tcx>>;
29}
30
31impl<I: Hash + Eq + 'static, T: ParameterizedOverTcx> ParameterizedOverTcx for UnordMap<I, T> {
32    type Value<'tcx> = UnordMap<I, T::Value<'tcx>>;
33}
34
35impl<T: ParameterizedOverTcx> ParameterizedOverTcx for Binder<'static, T> {
36    type Value<'tcx> = Binder<'tcx, T::Value<'tcx>>;
37}
38
39impl<T: ParameterizedOverTcx> ParameterizedOverTcx for EarlyBinder<'static, T> {
40    type Value<'tcx> = EarlyBinder<'tcx, T::Value<'tcx>>;
41}
42
43impl<T: ParameterizedOverTcx> ParameterizedOverTcx for LazyValue<T> {
44    type Value<'tcx> = LazyValue<T::Value<'tcx>>;
45}
46
47impl<T: ParameterizedOverTcx> ParameterizedOverTcx for LazyArray<T> {
48    type Value<'tcx> = LazyArray<T::Value<'tcx>>;
49}
50
51macro_rules! trivially_parameterized_over_tcx {
52    ($($ty:ty),+ $(,)?) => {
53        $(
54            impl ParameterizedOverTcx for $ty {
55                #[allow(unused_lifetimes)]
56                type Value<'tcx> = $ty;
57            }
58        )*
59    }
60}
61
62trivially_parameterized_over_tcx! {
63    bool,
64    u64,
65    usize,
66    std::string::String,
67    // tidy-alphabetical-start
68    crate::rmeta::AttrFlags,
69    crate::rmeta::CrateDep,
70    crate::rmeta::CrateHeader,
71    crate::rmeta::CrateRoot,
72    crate::rmeta::IncoherentImpls,
73    crate::rmeta::RawDefId,
74    crate::rmeta::TraitImpls,
75    crate::rmeta::VariantData,
76    rustc_abi::ReprOptions,
77    rustc_ast::DelimArgs,
78    rustc_hir::Attribute,
79    rustc_hir::ConstStability,
80    rustc_hir::Constness,
81    rustc_hir::CoroutineKind,
82    rustc_hir::DefaultBodyStability,
83    rustc_hir::Defaultness,
84    rustc_hir::LangItem,
85    rustc_hir::OpaqueTyOrigin<rustc_hir::def_id::DefId>,
86    rustc_hir::PreciseCapturingArgKind<Symbol, Symbol>,
87    rustc_hir::Safety,
88    rustc_hir::Stability,
89    rustc_hir::attrs::Deprecation,
90    rustc_hir::attrs::StrippedCfgItem<rustc_hir::def_id::DefIndex>,
91    rustc_hir::def::DefKind,
92    rustc_hir::def::DocLinkResMap,
93    rustc_hir::def_id::DefId,
94    rustc_hir::def_id::DefIndex,
95    rustc_hir::definitions::DefKey,
96    rustc_index::bit_set::DenseBitSet<u32>,
97    rustc_middle::metadata::ModChild,
98    rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrs,
99    rustc_middle::middle::debugger_visualizer::DebuggerVisualizerFile,
100    rustc_middle::middle::exported_symbols::SymbolExportInfo,
101    rustc_middle::middle::lib_features::FeatureStability,
102    rustc_middle::middle::resolve_bound_vars::ObjectLifetimeDefault,
103    rustc_middle::mir::ConstQualifs,
104    rustc_middle::ty::AnonConstKind,
105    rustc_middle::ty::AssocItemContainer,
106    rustc_middle::ty::AsyncDestructor,
107    rustc_middle::ty::Asyncness,
108    rustc_middle::ty::DeducedParamAttrs,
109    rustc_middle::ty::Destructor,
110    rustc_middle::ty::Generics,
111    rustc_middle::ty::ImplTraitInTraitData,
112    rustc_middle::ty::IntrinsicDef,
113    rustc_middle::ty::TraitDef,
114    rustc_middle::ty::Variance,
115    rustc_middle::ty::Visibility<DefIndex>,
116    rustc_middle::ty::adjustment::CoerceUnsizedInfo,
117    rustc_middle::ty::fast_reject::SimplifiedType,
118    rustc_session::config::TargetModifier,
119    rustc_session::cstore::ForeignModule,
120    rustc_session::cstore::LinkagePreference,
121    rustc_session::cstore::NativeLib,
122    rustc_span::ExpnData,
123    rustc_span::ExpnHash,
124    rustc_span::ExpnId,
125    rustc_span::Ident,
126    rustc_span::SourceFile,
127    rustc_span::Span,
128    rustc_span::Symbol,
129    rustc_span::hygiene::SyntaxContextKey,
130    // tidy-alphabetical-end
131}
132
133// HACK(compiler-errors): This macro rule can only take a fake path,
134// not a real, due to parsing ambiguity reasons.
135macro_rules! parameterized_over_tcx {
136    ($($( $fake_path:ident )::+ ),+ $(,)?) => {
137        $(
138            impl ParameterizedOverTcx for $( $fake_path )::+ <'static> {
139                type Value<'tcx> = $( $fake_path )::+ <'tcx>;
140            }
141        )*
142    }
143}
144
145parameterized_over_tcx! {
146    // tidy-alphabetical-start
147    crate::rmeta::DefPathHashMapRef,
148    rustc_middle::middle::exported_symbols::ExportedSymbol,
149    rustc_middle::mir::Body,
150    rustc_middle::mir::CoroutineLayout,
151    rustc_middle::mir::interpret::ConstAllocation,
152    rustc_middle::ty::Clause,
153    rustc_middle::ty::Const,
154    rustc_middle::ty::ConstConditions,
155    rustc_middle::ty::FnSig,
156    rustc_middle::ty::GenericPredicates,
157    rustc_middle::ty::ImplTraitHeader,
158    rustc_middle::ty::TraitRef,
159    rustc_middle::ty::Ty,
160    // tidy-alphabetical-end
161}
rustc_metadata/rmeta/parameterized.rs

rustc_metadata/rmeta/
parameterized.rs
