diff options
Diffstat (limited to 'src/librustdoc/passes/collect_trait_impls.rs')
| -rw-r--r-- | src/librustdoc/passes/collect_trait_impls.rs | 91 |
1 files changed, 46 insertions, 45 deletions
diff --git a/src/librustdoc/passes/collect_trait_impls.rs b/src/librustdoc/passes/collect_trait_impls.rs index 79db3c6c3..01ed4a60b 100644 --- a/src/librustdoc/passes/collect_trait_impls.rs +++ b/src/librustdoc/passes/collect_trait_impls.rs @@ -7,8 +7,8 @@ use crate::core::DocContext; use crate::formats::cache::Cache; use crate::visit::DocVisitor; -use rustc_data_structures::fx::{FxHashMap, FxHashSet}; -use rustc_hir::def_id::{DefId, LOCAL_CRATE}; +use rustc_data_structures::fx::FxHashSet; +use rustc_hir::def_id::{DefId, DefIdMap, DefIdSet, LOCAL_CRATE}; use rustc_middle::ty::{self, DefIdTree}; use rustc_span::symbol::sym; @@ -45,18 +45,20 @@ pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) -> let mut new_items_local = Vec::new(); // External trait impls. - cx.with_all_trait_impls(|cx, all_trait_impls| { + { let _prof_timer = cx.tcx.sess.prof.generic_activity("build_extern_trait_impls"); - for &impl_def_id in all_trait_impls.iter().skip_while(|def_id| def_id.is_local()) { - inline::build_impl(cx, None, impl_def_id, None, &mut new_items_external); + for &cnum in cx.tcx.crates(()) { + for &impl_def_id in cx.tcx.trait_impls_in_crate(cnum) { + inline::build_impl(cx, None, impl_def_id, None, &mut new_items_external); + } } - }); + } // Local trait impls. - cx.with_all_trait_impls(|cx, all_trait_impls| { + { let _prof_timer = cx.tcx.sess.prof.generic_activity("build_local_trait_impls"); let mut attr_buf = Vec::new(); - for &impl_def_id in all_trait_impls.iter().take_while(|def_id| def_id.is_local()) { + for &impl_def_id in cx.tcx.trait_impls_in_crate(LOCAL_CRATE) { let mut parent = Some(cx.tcx.parent(impl_def_id)); while let Some(did) = parent { attr_buf.extend( @@ -76,7 +78,7 @@ pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) -> inline::build_impl(cx, None, impl_def_id, Some(&attr_buf), &mut new_items_local); attr_buf.clear(); } - }); + } cx.tcx.sess.prof.generic_activity("build_primitive_trait_impls").run(|| { for def_id in PrimitiveType::all_impls(cx.tcx) { @@ -107,7 +109,7 @@ pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) -> // `Generics`. To avoid relying on the `impl` block, these // things would need to be created from wholecloth, in a // form that is valid for use in type inference. - let ty = tcx.type_of(def_id); + let ty = tcx.type_of(def_id).subst_identity(); match ty.kind() { ty::Slice(ty) | ty::Ref(_, ty, _) @@ -126,14 +128,14 @@ pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) -> }); let mut cleaner = BadImplStripper { prims, items: crate_items, cache: &cx.cache }; - let mut type_did_to_deref_target: FxHashMap<DefId, &Type> = FxHashMap::default(); + let mut type_did_to_deref_target: DefIdMap<&Type> = DefIdMap::default(); // Follow all `Deref` targets of included items and recursively add them as valid fn add_deref_target( cx: &DocContext<'_>, - map: &FxHashMap<DefId, &Type>, + map: &DefIdMap<&Type>, cleaner: &mut BadImplStripper<'_>, - targets: &mut FxHashSet<DefId>, + targets: &mut DefIdSet, type_did: DefId, ) { if let Some(target) = map.get(&type_did) { @@ -154,39 +156,38 @@ pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) -> // scan through included items ahead of time to splice in Deref targets to the "valid" sets for it in new_items_external.iter().chain(new_items_local.iter()) { - if let ImplItem(box Impl { ref for_, ref trait_, ref items, .. }) = *it.kind { - if trait_.as_ref().map(|t| t.def_id()) == cx.tcx.lang_items().deref_trait() - && cleaner.keep_impl(for_, true) - { - let target = items - .iter() - .find_map(|item| match *item.kind { - AssocTypeItem(ref t, _) => Some(&t.type_), - _ => None, - }) - .expect("Deref impl without Target type"); + if let ImplItem(box Impl { ref for_, ref trait_, ref items, .. }) = *it.kind && + trait_.as_ref().map(|t| t.def_id()) == cx.tcx.lang_items().deref_trait() && + cleaner.keep_impl(for_, true) + { + let target = items + .iter() + .find_map(|item| match *item.kind { + AssocTypeItem(ref t, _) => Some(&t.type_), + _ => None, + }) + .expect("Deref impl without Target type"); - if let Some(prim) = target.primitive_type() { - cleaner.prims.insert(prim); - } else if let Some(did) = target.def_id(&cx.cache) { - cleaner.items.insert(did.into()); - } - if let Some(for_did) = for_.def_id(&cx.cache) { - if type_did_to_deref_target.insert(for_did, target).is_none() { - // Since only the `DefId` portion of the `Type` instances is known to be same for both the - // `Deref` target type and the impl for type positions, this map of types is keyed by - // `DefId` and for convenience uses a special cleaner that accepts `DefId`s directly. - if cleaner.keep_impl_with_def_id(for_did.into()) { - let mut targets = FxHashSet::default(); - targets.insert(for_did); - add_deref_target( - cx, - &type_did_to_deref_target, - &mut cleaner, - &mut targets, - for_did, - ); - } + if let Some(prim) = target.primitive_type() { + cleaner.prims.insert(prim); + } else if let Some(did) = target.def_id(&cx.cache) { + cleaner.items.insert(did.into()); + } + if let Some(for_did) = for_.def_id(&cx.cache) { + if type_did_to_deref_target.insert(for_did, target).is_none() { + // Since only the `DefId` portion of the `Type` instances is known to be same for both the + // `Deref` target type and the impl for type positions, this map of types is keyed by + // `DefId` and for convenience uses a special cleaner that accepts `DefId`s directly. + if cleaner.keep_impl_with_def_id(for_did.into()) { + let mut targets = DefIdSet::default(); + targets.insert(for_did); + add_deref_target( + cx, + &type_did_to_deref_target, + &mut cleaner, + &mut targets, + for_did, + ); } } } |