rustdoc: Don't pass RenderOptions to DocContext

`RenderOptions` is full of HTML specific fields. The only ones that
`DocContext` needs are `document_private` and `document_hidden`, which
are accessable via `Cache` anyway.

Part of a larger campeign against `RenderOptions`:
https://rust-lang.zulipchat.com/#narrow/channel/266220-t-rustdoc/topic/Using.20.60RenderOptions.60.20in.20less.20places.2E/with/545705812

Author: aDotInTheVoid

src/librustdoc/clean/inline.rs

@@ -497,7 +497,7 @@ pub(crate) fn build_impl(
         return;
     }
 
-    let document_hidden = cx.render_options.document_hidden;
+    let document_hidden = cx.document_hidden();
     let (trait_items, generics) = match impl_item {
         Some(impl_) => (
             impl_

src/librustdoc/clean/mod.rs

@@ -71,7 +71,7 @@ pub(crate) fn clean_doc_module<'tcx>(doc: &DocModule<'tcx>, cx: &mut DocContext<
     items.extend(doc.foreigns.iter().map(|(item, renamed, import_id)| {
         let item = clean_maybe_renamed_foreign_item(cx, item, *renamed, *import_id);
         if let Some(name) = item.name
-            && (cx.render_options.document_hidden || !item.is_doc_hidden())
+            && (cx.document_hidden() || !item.is_doc_hidden())
         {
             inserted.insert((item.type_(), name));
         }
@@ -82,7 +82,7 @@ pub(crate) fn clean_doc_module<'tcx>(doc: &DocModule<'tcx>, cx: &mut DocContext<
             return None;
         }
         let item = clean_doc_module(x, cx);
-        if !cx.render_options.document_hidden && item.is_doc_hidden() {
+        if !cx.document_hidden() && item.is_doc_hidden() {
             // Hidden modules are stripped at a later stage.
             // If a hidden module has the same name as a visible one, we want
             // to keep both of them around.
@@ -104,7 +104,7 @@ pub(crate) fn clean_doc_module<'tcx>(doc: &DocModule<'tcx>, cx: &mut DocContext<
         let v = clean_maybe_renamed_item(cx, item, *renamed, import_ids);
         for item in &v {
             if let Some(name) = item.name
-                && (cx.render_options.document_hidden || !item.is_doc_hidden())
+                && (cx.document_hidden() || !item.is_doc_hidden())
             {
                 inserted.insert((item.type_(), name));
             }
@@ -203,7 +203,7 @@ fn generate_item_with_correct_attrs(
                     .get_word_attr(sym::inline)
                     .is_some()
                     || (is_glob_import(cx.tcx, import_id)
-                        && (cx.render_options.document_hidden || !cx.tcx.is_doc_hidden(def_id)));
+                        && (cx.document_hidden() || !cx.tcx.is_doc_hidden(def_id)));
             attrs.extend(get_all_import_attributes(cx, import_id, def_id, is_inline));
             is_inline = is_inline || import_is_inline;
         }
@@ -1581,9 +1581,9 @@ fn first_non_private<'tcx>(
                         if let Res::Def(DefKind::Ctor(..), _) | Res::SelfCtor(..) = res {
                             continue;
                         }
-                        if (cx.render_options.document_hidden ||
+                        if (cx.document_hidden() ||
                             !cx.tcx.is_doc_hidden(use_def_id)) &&
-                            // We never check for "cx.render_options.document_private"
+                            // We never check for "cx.document_private()"
                             // because if a re-export is not fully public, it's never
                             // documented.
                             cx.tcx.local_visibility(local_use_def_id).is_public()
@@ -2628,7 +2628,7 @@ fn get_all_import_attributes<'hir>(
             attrs = import_attrs.iter().map(|attr| (Cow::Borrowed(attr), Some(def_id))).collect();
             first = false;
         // We don't add attributes of an intermediate re-export if it has `#[doc(hidden)]`.
-        } else if cx.render_options.document_hidden || !cx.tcx.is_doc_hidden(def_id) {
+        } else if cx.document_hidden() || !cx.tcx.is_doc_hidden(def_id) {
             add_without_unwanted_attributes(&mut attrs, import_attrs, is_inline, Some(def_id));
         }
     }
@@ -3069,8 +3069,7 @@ fn clean_use_statement_inner<'tcx>(
     // #[doc(no_inline)] attribute is present.
     // Don't inline doc(hidden) imports so they can be stripped at a later stage.
     let mut denied = cx.is_json_output()
-        || !(visibility.is_public()
-            || (cx.render_options.document_private && is_visible_from_parent_mod))
+        || !(visibility.is_public() || (cx.document_private() && is_visible_from_parent_mod))
         || pub_underscore
         || attrs.iter().any(|a| {
             a.has_name(sym::doc)

src/librustdoc/core.rs

@@ -28,7 +28,7 @@ use rustc_span::symbol::sym;
 use tracing::{debug, info};
 
 use crate::clean::inline::build_trait;
-use crate::clean::{self, ItemId};
+use crate::clean::{self, ItemId, NestedAttributesExt};
 use crate::config::{Options as RustdocOptions, OutputFormat, RenderOptions};
 use crate::formats::cache::Cache;
 use crate::html::macro_expansion::{ExpandedCode, source_macro_expansion};
@@ -61,8 +61,6 @@ pub(crate) struct DocContext<'tcx> {
     // FIXME(eddyb) make this a `ty::TraitRef<'tcx>` set.
     pub(crate) generated_synthetics: FxHashSet<(Ty<'tcx>, DefId)>,
     pub(crate) auto_traits: Vec<DefId>,
-    /// The options given to rustdoc that could be relevant to a pass.
-    pub(crate) render_options: RenderOptions,
     /// This same cache is used throughout rustdoc, including in [`crate::html::render`].
     pub(crate) cache: Cache,
     /// Used by [`clean::inline`] to tell if an item has already been inlined.
@@ -138,6 +136,16 @@ impl<'tcx> DocContext<'tcx> {
     pub(crate) fn is_json_output(&self) -> bool {
         self.output_format.is_json() && !self.show_coverage
     }
+
+    /// If `--document-private-items` was passed to rustdoc.
+    pub(crate) fn document_private(&self) -> bool {
+        self.cache.document_private
+    }
+
+    /// If `--document-hidden-items` was passed to rustdoc.
+    pub(crate) fn document_hidden(&self) -> bool {
+        self.cache.document_hidden
+    }
 }
 
 /// Creates a new `DiagCtxt` that can be used to emit warnings and errors.
@@ -374,7 +382,6 @@ pub(crate) fn run_global_ctxt(
         cache: Cache::new(render_options.document_private, render_options.document_hidden),
         inlined: FxHashSet::default(),
         output_format,
-        render_options,
         show_coverage,
     };
 
@@ -411,14 +418,6 @@ pub(crate) fn run_global_ctxt(
         );
     }
 
-    // Process all of the crate attributes, extracting plugin metadata along
-    // with the passes which we are supposed to run.
-    for attr in krate.module.attrs.lists(sym::doc) {
-        if attr.is_word() && attr.has_name(sym::document_private_items) {
-            ctxt.render_options.document_private = true;
-        }
-    }
-
     info!("Executing passes");
 
     let mut visited = FxHashMap::default();
@@ -427,9 +426,9 @@ pub(crate) fn run_global_ctxt(
     for p in passes::defaults(show_coverage) {
         let run = match p.condition {
             Always => true,
-            WhenDocumentPrivate => ctxt.render_options.document_private,
-            WhenNotDocumentPrivate => !ctxt.render_options.document_private,
-            WhenNotDocumentHidden => !ctxt.render_options.document_hidden,
+            WhenDocumentPrivate => ctxt.document_private(),
+            WhenNotDocumentPrivate => !ctxt.document_private(),
+            WhenNotDocumentHidden => !ctxt.document_hidden(),
         };
         if run {
             debug!("running pass {}", p.pass.name);
@@ -447,15 +446,16 @@ pub(crate) fn run_global_ctxt(
 
     tcx.sess.time("check_lint_expectations", || tcx.check_expectations(Some(sym::rustdoc)));
 
-    krate = tcx.sess.time("create_format_cache", || Cache::populate(&mut ctxt, krate));
+    krate =
+        tcx.sess.time("create_format_cache", || Cache::populate(&mut ctxt, krate, &render_options));
 
     let mut collector =
         LinkCollector { cx: &mut ctxt, visited_links: visited, ambiguous_links: ambiguous };
     collector.resolve_ambiguities();
 
     tcx.dcx().abort_if_errors();
 
-    (krate, ctxt.render_options, ctxt.cache, expanded_macros)
+    (krate, render_options, ctxt.cache, expanded_macros)
 }
 
 /// Due to <https://github.com/rust-lang/rust/pull/73566>,

src/librustdoc/formats/cache.rs

@@ -10,6 +10,7 @@ use tracing::debug;
 
 use crate::clean::types::ExternalLocation;
 use crate::clean::{self, ExternalCrate, ItemId, PrimitiveType};
+use crate::config::RenderOptions;
 use crate::core::DocContext;
 use crate::fold::DocFolder;
 use crate::formats::Impl;
@@ -156,15 +157,18 @@ impl Cache {
 
     /// Populates the `Cache` with more data. The returned `Crate` will be missing some data that was
     /// in `krate` due to the data being moved into the `Cache`.
-    pub(crate) fn populate(cx: &mut DocContext<'_>, mut krate: clean::Crate) -> clean::Crate {
+    pub(crate) fn populate(
+        cx: &mut DocContext<'_>,
+        mut krate: clean::Crate,
+        render_options: &RenderOptions,
+    ) -> clean::Crate {
         let tcx = cx.tcx;
 
         // Crawl the crate to build various caches used for the output
         debug!(?cx.cache.crate_version);
         assert!(cx.external_traits.is_empty());
         cx.cache.traits = mem::take(&mut krate.external_traits);
 
-        let render_options = &cx.render_options;
         let extern_url_takes_precedence = render_options.extern_html_root_takes_precedence;
         let dst = &render_options.output;
 

src/librustdoc/passes/check_doc_test_visibility.rs

@@ -102,7 +102,7 @@ pub(crate) fn should_have_doc_example(cx: &DocContext<'_>, item: &clean::Item) -
         return false;
     }
 
-    if (!cx.render_options.document_hidden
+    if (!cx.document_hidden()
         && (cx.tcx.is_doc_hidden(def_id.to_def_id()) || inherits_doc_hidden(cx.tcx, def_id, None)))
         || cx.tcx.def_span(def_id.to_def_id()).in_derive_expansion()
     {

src/librustdoc/passes/collect_intra_doc_links.rs

@@ -1070,7 +1070,7 @@ fn preprocessed_markdown_links(s: &str) -> Vec<PreprocessedMarkdownLink> {
 impl LinkCollector<'_, '_> {
     #[instrument(level = "debug", skip_all)]
     fn resolve_links(&mut self, item: &Item) {
-        if !self.cx.render_options.document_private
+        if !self.cx.document_private()
             && let Some(def_id) = item.item_id.as_def_id()
             && let Some(def_id) = def_id.as_local()
             && !self.cx.tcx.effective_visibilities(()).is_exported(def_id)
@@ -2400,7 +2400,7 @@ fn privacy_error(cx: &DocContext<'_>, diag_info: &DiagnosticInfo<'_>, path_str:
             diag.span_label(sp, "this item is private");
         }
 
-        let note_msg = if cx.render_options.document_private {
+        let note_msg = if cx.document_private() {
             "this link resolves only because you passed `--document-private-items`, but will break without"
         } else {
             "this link will resolve properly if you pass `--document-private-items`"

src/librustdoc/passes/lint/redundant_explicit_links.rs

@@ -46,13 +46,13 @@ fn check_redundant_explicit_link_for_did(
         return;
     };
 
-    let is_hidden = !cx.render_options.document_hidden
+    let is_hidden = !cx.document_hidden()
         && (item.is_doc_hidden() || inherits_doc_hidden(cx.tcx, local_item_id, None));
     if is_hidden {
         return;
     }
-    let is_private = !cx.render_options.document_private
-        && !cx.cache.effective_visibilities.is_directly_public(cx.tcx, did);
+    let is_private =
+        !cx.document_private() && !cx.cache.effective_visibilities.is_directly_public(cx.tcx, did);
     if is_private {
         return;
     }

src/librustdoc/passes/strip_hidden.rs

@@ -43,8 +43,8 @@ pub(crate) fn strip_hidden(krate: clean::Crate, cx: &mut DocContext<'_>) -> clea
         retained: &retained,
         cache: &cx.cache,
         is_json_output,
-        document_private: cx.render_options.document_private,
-        document_hidden: cx.render_options.document_hidden,
+        document_private: cx.document_private(),
+        document_hidden: cx.document_hidden(),
     };
     stripper.fold_crate(krate)
 }

src/librustdoc/passes/strip_priv_imports.rs

@@ -14,10 +14,6 @@ pub(crate) const STRIP_PRIV_IMPORTS: Pass = Pass {
 
 pub(crate) fn strip_priv_imports(krate: clean::Crate, cx: &mut DocContext<'_>) -> clean::Crate {
     let is_json_output = cx.is_json_output();
-    ImportStripper {
-        tcx: cx.tcx,
-        is_json_output,
-        document_hidden: cx.render_options.document_hidden,
-    }
-    .fold_crate(krate)
+    ImportStripper { tcx: cx.tcx, is_json_output, document_hidden: cx.document_hidden() }
+        .fold_crate(krate)
 }

src/librustdoc/passes/strip_private.rs

@@ -29,12 +29,9 @@ pub(crate) fn strip_private(mut krate: clean::Crate, cx: &mut DocContext<'_>) ->
             is_json_output,
             tcx: cx.tcx,
         };
-        krate = ImportStripper {
-            tcx: cx.tcx,
-            is_json_output,
-            document_hidden: cx.render_options.document_hidden,
-        }
-        .fold_crate(stripper.fold_crate(krate));
+        krate =
+            ImportStripper { tcx: cx.tcx, is_json_output, document_hidden: cx.document_hidden() }
+                .fold_crate(stripper.fold_crate(krate));
     }
 
     // strip all impls referencing private items
@@ -43,8 +40,8 @@ pub(crate) fn strip_private(mut krate: clean::Crate, cx: &mut DocContext<'_>) ->
         retained: &retained,
         cache: &cx.cache,
         is_json_output,
-        document_private: cx.render_options.document_private,
-        document_hidden: cx.render_options.document_hidden,
+        document_private: cx.document_private(),
+        document_hidden: cx.document_hidden(),
     };
     stripper.fold_crate(krate)
 }