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, GenericArg, Region};
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
51impl ParameterizedOverTcx for Region<'static> {
52    type Value<'tcx> = Region<'tcx>;
53}
54
55impl ParameterizedOverTcx for GenericArg<'static> {
56    type Value<'tcx> = GenericArg<'tcx>;
57}
58
59macro_rules! trivially_parameterized_over_tcx {
60    ($($ty:ty),+ $(,)?) => {
61        $(
62            impl ParameterizedOverTcx for $ty {
63                #[allow(unused_lifetimes)]
64                type Value<'tcx> = $ty;
65            }
66        )*
67    }
68}
69
70impl ParameterizedOverTcx for rustc_span::hygiene::SyntaxContextKey {
    #[allow(unused_lifetimes)]
    type Value<'tcx> = rustc_span::hygiene::SyntaxContextKey;
}trivially_parameterized_over_tcx! {
71    bool,
72    u32,
73    u64,
74    usize,
75    std::string::String,
76    // tidy-alphabetical-start
77    crate::rmeta::AttrFlags,
78    crate::rmeta::CrateDep,
79    crate::rmeta::CrateHeader,
80    crate::rmeta::CrateRoot,
81    crate::rmeta::IncoherentImpls,
82    crate::rmeta::ProcMacroKind,
83    crate::rmeta::RawDefId,
84    crate::rmeta::TraitImpls,
85    crate::rmeta::VariantData,
86    rustc_abi::ReprOptions,
87    rustc_ast::DelimArgs,
88    rustc_crate_store::ForeignModule,
89    rustc_crate_store::LinkagePreference,
90    rustc_crate_store::NativeLib,
91    rustc_hir::Attribute,
92    rustc_hir::ConstStability,
93    rustc_hir::Constness,
94    rustc_hir::CoroutineKind,
95    rustc_hir::DefaultBodyStability,
96    rustc_hir::Defaultness,
97    rustc_hir::OpaqueTyOrigin<rustc_hir::def_id::DefId>,
98    rustc_hir::PreciseCapturingArgKind<Symbol, Symbol>,
99    rustc_hir::Safety,
100    rustc_hir::Stability,
101    rustc_hir::attrs::Deprecation,
102    rustc_hir::attrs::EiiDecl,
103    rustc_hir::attrs::EiiImpl,
104    rustc_hir::attrs::StrippedCfgItem<rustc_hir::def_id::DefIndex>,
105    rustc_hir::attrs::lang_items::LangItem,
106    rustc_hir::def::DefKind,
107    rustc_hir::def::DocLinkResMap,
108    rustc_hir::def_id::DefId,
109    rustc_hir::def_id::DefIndex,
110    rustc_hir::definitions::DefKey,
111    rustc_index::bit_set::DenseBitSet<u32>,
112    rustc_middle::metadata::AmbigModChild,
113    rustc_middle::metadata::ModChild,
114    rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrs,
115    rustc_middle::middle::debugger_visualizer::DebuggerVisualizerFile,
116    rustc_middle::middle::deduced_param_attrs::DeducedParamAttrs,
117    rustc_middle::middle::exported_symbols::SymbolExportInfo,
118    rustc_middle::middle::lib_features::FeatureStability,
119    rustc_middle::middle::resolve_bound_vars::ObjectLifetimeDefault,
120    rustc_middle::mir::ConstQualifs,
121    rustc_middle::mir::ConstValue,
122    rustc_middle::ty::AnonConstKind,
123    rustc_middle::ty::AssocContainer,
124    rustc_middle::ty::AsyncDestructor,
125    rustc_middle::ty::Asyncness,
126    rustc_middle::ty::Destructor,
127    rustc_middle::ty::Generics,
128    rustc_middle::ty::ImplTraitInTraitData,
129    rustc_middle::ty::IntrinsicDef,
130    rustc_middle::ty::RestrictionKind,
131    rustc_middle::ty::TraitDef,
132    rustc_middle::ty::Variance,
133    rustc_middle::ty::Visibility<DefIndex>,
134    rustc_middle::ty::adjustment::CoerceUnsizedInfo,
135    rustc_middle::ty::fast_reject::SimplifiedType,
136    rustc_session::config::TargetModifier,
137    rustc_session::config::mitigation_coverage::DeniedPartialMitigation,
138    rustc_span::ExpnData,
139    rustc_span::ExpnHash,
140    rustc_span::ExpnId,
141    rustc_span::Ident,
142    rustc_span::SourceFile,
143    rustc_span::Span,
144    rustc_span::Symbol,
145    rustc_span::hygiene::SyntaxContextKey,
146    // tidy-alphabetical-end
147}
148
149// HACK(compiler-errors): This macro rule can only take a fake path,
150// not a real, due to parsing ambiguity reasons.
151macro_rules! parameterized_over_tcx {
152    ($($( $fake_path:ident )::+ ),+ $(,)?) => {
153        $(
154            impl ParameterizedOverTcx for $( $fake_path )::+ <'static> {
155                type Value<'tcx> = $( $fake_path )::+ <'tcx>;
156            }
157        )*
158    }
159}
160
161impl ParameterizedOverTcx for rustc_middle::ty::Ty<'static> {
    type Value<'tcx> = rustc_middle::ty::Ty<'tcx>;
}parameterized_over_tcx! {
162    // tidy-alphabetical-start
163    crate::rmeta::DefPathHashMapRef,
164    rustc_middle::middle::exported_symbols::ExportedSymbol,
165    rustc_middle::mir::Body,
166    rustc_middle::mir::CoroutineLayout,
167    rustc_middle::mir::interpret::ConstAllocation,
168    rustc_middle::ty::Clause,
169    rustc_middle::ty::Const,
170    rustc_middle::ty::ConstConditions,
171    rustc_middle::ty::FnSig,
172    rustc_middle::ty::GenericClauses,
173    rustc_middle::ty::ImplTraitHeader,
174    rustc_middle::ty::TraitRef,
175    rustc_middle::ty::Ty,
176    // tidy-alphabetical-end
177}
rustc_metadata/rmeta/parameterized.rs

rustc_metadata/rmeta/
parameterized.rs
