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use rustc_data_structures::fx::FxHashMap;
use rustc_hir::def_id::DefIndex;
use rustc_index::vec::{Idx, IndexVec};
use crate::ty;
pub trait ParameterizedOverTcx: 'static {
type Value<'tcx>;
}
impl<T: ParameterizedOverTcx> ParameterizedOverTcx for &'static [T] {
type Value<'tcx> = &'tcx [T::Value<'tcx>];
}
impl<T: ParameterizedOverTcx> ParameterizedOverTcx for Option<T> {
type Value<'tcx> = Option<T::Value<'tcx>>;
}
impl<A: ParameterizedOverTcx, B: ParameterizedOverTcx> ParameterizedOverTcx for (A, B) {
type Value<'tcx> = (A::Value<'tcx>, B::Value<'tcx>);
}
impl<I: Idx + 'static, T: ParameterizedOverTcx> ParameterizedOverTcx for IndexVec<I, T> {
type Value<'tcx> = IndexVec<I, T::Value<'tcx>>;
}
impl<I: 'static, T: ParameterizedOverTcx> ParameterizedOverTcx for FxHashMap<I, T> {
type Value<'tcx> = FxHashMap<I, T::Value<'tcx>>;
}
impl<T: ParameterizedOverTcx> ParameterizedOverTcx for ty::Binder<'static, T> {
type Value<'tcx> = ty::Binder<'tcx, T::Value<'tcx>>;
}
impl<T: ParameterizedOverTcx> ParameterizedOverTcx for ty::EarlyBinder<T> {
type Value<'tcx> = ty::EarlyBinder<T::Value<'tcx>>;
}
#[macro_export]
macro_rules! trivially_parameterized_over_tcx {
($($ty:ty),+ $(,)?) => {
$(
impl $crate::ty::ParameterizedOverTcx for $ty {
#[allow(unused_lifetimes)]
type Value<'tcx> = $ty;
}
)*
}
}
trivially_parameterized_over_tcx! {
usize,
(),
u32,
bool,
std::string::String,
crate::metadata::ModChild,
crate::middle::codegen_fn_attrs::CodegenFnAttrs,
crate::middle::exported_symbols::SymbolExportInfo,
crate::middle::resolve_lifetime::ObjectLifetimeDefault,
crate::mir::ConstQualifs,
ty::AssocItemContainer,
ty::DeducedParamAttrs,
ty::Generics,
ty::ImplPolarity,
ty::ReprOptions,
ty::TraitDef,
ty::UnusedGenericParams,
ty::Visibility<DefIndex>,
ty::adjustment::CoerceUnsizedInfo,
ty::fast_reject::SimplifiedType,
rustc_ast::Attribute,
rustc_ast::DelimArgs,
rustc_attr::ConstStability,
rustc_attr::DefaultBodyStability,
rustc_attr::Deprecation,
rustc_attr::Stability,
rustc_hir::Constness,
rustc_hir::Defaultness,
rustc_hir::GeneratorKind,
rustc_hir::IsAsync,
rustc_hir::LangItem,
rustc_hir::def::DefKind,
rustc_hir::def_id::DefIndex,
rustc_hir::definitions::DefKey,
rustc_index::bit_set::BitSet<u32>,
rustc_index::bit_set::FiniteBitSet<u32>,
rustc_session::cstore::ForeignModule,
rustc_session::cstore::LinkagePreference,
rustc_session::cstore::NativeLib,
rustc_span::DebuggerVisualizerFile,
rustc_span::ExpnData,
rustc_span::ExpnHash,
rustc_span::ExpnId,
rustc_span::SourceFile,
rustc_span::Span,
rustc_span::Symbol,
rustc_span::def_id::DefPathHash,
rustc_span::hygiene::SyntaxContextData,
rustc_span::symbol::Ident,
rustc_type_ir::Variance,
}
// HACK(compiler-errors): This macro rule can only take a fake path,
// not a real, due to parsing ambiguity reasons.
#[macro_export]
macro_rules! parameterized_over_tcx {
($($($fake_path:ident)::+),+ $(,)?) => {
$(
impl $crate::ty::ParameterizedOverTcx for $($fake_path)::+<'static> {
type Value<'tcx> = $($fake_path)::+<'tcx>;
}
)*
}
}
parameterized_over_tcx! {
crate::middle::exported_symbols::ExportedSymbol,
crate::mir::Body,
ty::Ty,
ty::FnSig,
ty::GenericPredicates,
ty::TraitRef,
ty::Const,
ty::Predicate,
ty::Clause,
ty::GeneratorDiagnosticData,
}
|
