| use std::cell::RefCell; |
| use std::collections::BTreeMap; |
| use std::io; |
| use std::path::{Path, PathBuf}; |
| use std::rc::Rc; |
| use std::sync::mpsc::{channel, Receiver}; |
| |
| use rustc_data_structures::fx::{FxHashMap, FxHashSet}; |
| use rustc_hir::def_id::{DefIdMap, LOCAL_CRATE}; |
| use rustc_middle::ty::TyCtxt; |
| use rustc_session::Session; |
| use rustc_span::edition::Edition; |
| use rustc_span::{sym, FileName, Symbol}; |
| |
| use super::print_item::{full_path, item_path, print_item}; |
| use super::search_index::build_index; |
| use super::write_shared::write_shared; |
| use super::{ |
| collect_spans_and_sources, scrape_examples_help, |
| sidebar::print_sidebar, |
| sidebar::{sidebar_module_like, Sidebar}, |
| AllTypes, LinkFromSrc, StylePath, |
| }; |
| use crate::clean::utils::has_doc_flag; |
| use crate::clean::{self, types::ExternalLocation, ExternalCrate}; |
| use crate::config::{ModuleSorting, RenderOptions}; |
| use crate::docfs::{DocFS, PathError}; |
| use crate::error::Error; |
| use crate::formats::cache::Cache; |
| use crate::formats::item_type::ItemType; |
| use crate::formats::FormatRenderer; |
| use crate::html::escape::Escape; |
| use crate::html::format::{join_with_double_colon, Buffer}; |
| use crate::html::markdown::{self, plain_text_summary, ErrorCodes, IdMap}; |
| use crate::html::url_parts_builder::UrlPartsBuilder; |
| use crate::html::{layout, sources, static_files}; |
| use crate::scrape_examples::AllCallLocations; |
| use crate::try_err; |
| use askama::Template; |
| |
| /// Major driving force in all rustdoc rendering. This contains information |
| /// about where in the tree-like hierarchy rendering is occurring and controls |
| /// how the current page is being rendered. |
| /// |
| /// It is intended that this context is a lightweight object which can be fairly |
| /// easily cloned because it is cloned per work-job (about once per item in the |
| /// rustdoc tree). |
| pub(crate) struct Context<'tcx> { |
| /// Current hierarchy of components leading down to what's currently being |
| /// rendered |
| pub(crate) current: Vec<Symbol>, |
| /// The current destination folder of where HTML artifacts should be placed. |
| /// This changes as the context descends into the module hierarchy. |
| pub(crate) dst: PathBuf, |
| /// A flag, which when `true`, will render pages which redirect to the |
| /// real location of an item. This is used to allow external links to |
| /// publicly reused items to redirect to the right location. |
| pub(super) render_redirect_pages: bool, |
| /// Tracks section IDs for `Deref` targets so they match in both the main |
| /// body and the sidebar. |
| pub(super) deref_id_map: DefIdMap<String>, |
| /// The map used to ensure all generated 'id=' attributes are unique. |
| pub(super) id_map: IdMap, |
| /// Shared mutable state. |
| /// |
| /// Issue for improving the situation: [#82381][] |
| /// |
| /// [#82381]: https://github.com/rust-lang/rust/issues/82381 |
| pub(crate) shared: Rc<SharedContext<'tcx>>, |
| /// This flag indicates whether source links should be generated or not. If |
| /// the source files are present in the html rendering, then this will be |
| /// `true`. |
| pub(crate) include_sources: bool, |
| /// Collection of all types with notable traits referenced in the current module. |
| pub(crate) types_with_notable_traits: FxHashSet<clean::Type>, |
| /// Field used during rendering, to know if we're inside an inlined item. |
| pub(crate) is_inside_inlined_module: bool, |
| } |
| |
| // `Context` is cloned a lot, so we don't want the size to grow unexpectedly. |
| #[cfg(all(not(windows), target_arch = "x86_64", target_pointer_width = "64"))] |
| rustc_data_structures::static_assert_size!(Context<'_>, 160); |
| |
| /// Shared mutable state used in [`Context`] and elsewhere. |
| pub(crate) struct SharedContext<'tcx> { |
| pub(crate) tcx: TyCtxt<'tcx>, |
| /// The path to the crate root source minus the file name. |
| /// Used for simplifying paths to the highlighted source code files. |
| pub(crate) src_root: PathBuf, |
| /// This describes the layout of each page, and is not modified after |
| /// creation of the context (contains info like the favicon and added html). |
| pub(crate) layout: layout::Layout, |
| /// The local file sources we've emitted and their respective url-paths. |
| pub(crate) local_sources: FxHashMap<PathBuf, String>, |
| /// Show the memory layout of types in the docs. |
| pub(super) show_type_layout: bool, |
| /// The base-URL of the issue tracker for when an item has been tagged with |
| /// an issue number. |
| pub(super) issue_tracker_base_url: Option<String>, |
| /// The directories that have already been created in this doc run. Used to reduce the number |
| /// of spurious `create_dir_all` calls. |
| created_dirs: RefCell<FxHashSet<PathBuf>>, |
| /// This flag indicates whether listings of modules (in the side bar and documentation itself) |
| /// should be ordered alphabetically or in order of appearance (in the source code). |
| pub(super) module_sorting: ModuleSorting, |
| /// Additional CSS files to be added to the generated docs. |
| pub(crate) style_files: Vec<StylePath>, |
| /// Suffix to add on resource files (if suffix is "-v2" then "search-index.js" becomes |
| /// "search-index-v2.js"). |
| pub(crate) resource_suffix: String, |
| /// Optional path string to be used to load static files on output pages. If not set, uses |
| /// combinations of `../` to reach the documentation root. |
| pub(crate) static_root_path: Option<String>, |
| /// The fs handle we are working with. |
| pub(crate) fs: DocFS, |
| pub(super) codes: ErrorCodes, |
| pub(super) playground: Option<markdown::Playground>, |
| all: RefCell<AllTypes>, |
| /// Storage for the errors produced while generating documentation so they |
| /// can be printed together at the end. |
| errors: Receiver<String>, |
| /// `None` by default, depends on the `generate-redirect-map` option flag. If this field is set |
| /// to `Some(...)`, it'll store redirections and then generate a JSON file at the top level of |
| /// the crate. |
| redirections: Option<RefCell<FxHashMap<String, String>>>, |
| |
| /// Correspondence map used to link types used in the source code pages to allow to click on |
| /// links to jump to the type's definition. |
| pub(crate) span_correspondence_map: FxHashMap<rustc_span::Span, LinkFromSrc>, |
| /// The [`Cache`] used during rendering. |
| pub(crate) cache: Cache, |
| |
| pub(crate) call_locations: AllCallLocations, |
| } |
| |
| impl SharedContext<'_> { |
| pub(crate) fn ensure_dir(&self, dst: &Path) -> Result<(), Error> { |
| let mut dirs = self.created_dirs.borrow_mut(); |
| if !dirs.contains(dst) { |
| try_err!(self.fs.create_dir_all(dst), dst); |
| dirs.insert(dst.to_path_buf()); |
| } |
| |
| Ok(()) |
| } |
| |
| pub(crate) fn edition(&self) -> Edition { |
| self.tcx.sess.edition() |
| } |
| } |
| |
| impl<'tcx> Context<'tcx> { |
| pub(crate) fn tcx(&self) -> TyCtxt<'tcx> { |
| self.shared.tcx |
| } |
| |
| pub(crate) fn cache(&self) -> &Cache { |
| &self.shared.cache |
| } |
| |
| pub(super) fn sess(&self) -> &'tcx Session { |
| self.shared.tcx.sess |
| } |
| |
| pub(super) fn derive_id<S: AsRef<str> + ToString>(&mut self, id: S) -> String { |
| self.id_map.derive(id) |
| } |
| |
| /// String representation of how to get back to the root path of the 'doc/' |
| /// folder in terms of a relative URL. |
| pub(super) fn root_path(&self) -> String { |
| "../".repeat(self.current.len()) |
| } |
| |
| fn render_item(&mut self, it: &clean::Item, is_module: bool) -> String { |
| let mut render_redirect_pages = self.render_redirect_pages; |
| // If the item is stripped but inlined, links won't point to the item so no need to generate |
| // a file for it. |
| if it.is_stripped() && |
| let Some(def_id) = it.def_id() && |
| def_id.is_local() |
| { |
| if self.is_inside_inlined_module || self.shared.cache.inlined_items.contains(&def_id) { |
| // For now we're forced to generate a redirect page for stripped items until |
| // `record_extern_fqn` correctly points to external items. |
| render_redirect_pages = true; |
| } |
| } |
| let mut title = String::new(); |
| if !is_module { |
| title.push_str(it.name.unwrap().as_str()); |
| } |
| if !it.is_primitive() && !it.is_keyword() { |
| if !is_module { |
| title.push_str(" in "); |
| } |
| // No need to include the namespace for primitive types and keywords |
| title.push_str(&join_with_double_colon(&self.current)); |
| }; |
| title.push_str(" - Rust"); |
| let tyname = it.type_(); |
| let desc = plain_text_summary(&it.doc_value(), &it.link_names(&self.cache())); |
| let desc = if !desc.is_empty() { |
| desc |
| } else if it.is_crate() { |
| format!("API documentation for the Rust `{}` crate.", self.shared.layout.krate) |
| } else { |
| format!( |
| "API documentation for the Rust `{name}` {tyname} in crate `{krate}`.", |
| name = it.name.as_ref().unwrap(), |
| krate = self.shared.layout.krate, |
| ) |
| }; |
| let name; |
| let tyname_s = if it.is_crate() { |
| name = format!("{tyname} crate"); |
| name.as_str() |
| } else { |
| tyname.as_str() |
| }; |
| |
| if !render_redirect_pages { |
| let clone_shared = Rc::clone(&self.shared); |
| let page = layout::Page { |
| css_class: tyname_s, |
| root_path: &self.root_path(), |
| static_root_path: clone_shared.static_root_path.as_deref(), |
| title: &title, |
| description: &desc, |
| resource_suffix: &clone_shared.resource_suffix, |
| rust_logo: has_doc_flag(self.tcx(), LOCAL_CRATE.as_def_id(), sym::rust_logo), |
| }; |
| let mut page_buffer = Buffer::html(); |
| print_item(self, it, &mut page_buffer, &page); |
| layout::render( |
| &clone_shared.layout, |
| &page, |
| |buf: &mut _| print_sidebar(self, it, buf), |
| move |buf: &mut Buffer| buf.push_buffer(page_buffer), |
| &clone_shared.style_files, |
| ) |
| } else { |
| if let Some(&(ref names, ty)) = self.cache().paths.get(&it.item_id.expect_def_id()) { |
| if self.current.len() + 1 != names.len() |
| || self.current.iter().zip(names.iter()).any(|(a, b)| a != b) |
| { |
| // We checked that the redirection isn't pointing to the current file, |
| // preventing an infinite redirection loop in the generated |
| // documentation. |
| |
| let mut path = String::new(); |
| for name in &names[..names.len() - 1] { |
| path.push_str(name.as_str()); |
| path.push('/'); |
| } |
| path.push_str(&item_path(ty, names.last().unwrap().as_str())); |
| match self.shared.redirections { |
| Some(ref redirections) => { |
| let mut current_path = String::new(); |
| for name in &self.current { |
| current_path.push_str(name.as_str()); |
| current_path.push('/'); |
| } |
| current_path.push_str(&item_path(ty, names.last().unwrap().as_str())); |
| redirections.borrow_mut().insert(current_path, path); |
| } |
| None => { |
| return layout::redirect(&format!( |
| "{root}{path}", |
| root = self.root_path() |
| )); |
| } |
| } |
| } |
| } |
| String::new() |
| } |
| } |
| |
| /// Construct a map of items shown in the sidebar to a plain-text summary of their docs. |
| fn build_sidebar_items(&self, m: &clean::Module) -> BTreeMap<String, Vec<String>> { |
| // BTreeMap instead of HashMap to get a sorted output |
| let mut map: BTreeMap<_, Vec<_>> = BTreeMap::new(); |
| let mut inserted: FxHashMap<ItemType, FxHashSet<Symbol>> = FxHashMap::default(); |
| |
| for item in &m.items { |
| if item.is_stripped() { |
| continue; |
| } |
| |
| let short = item.type_(); |
| let myname = match item.name { |
| None => continue, |
| Some(s) => s, |
| }; |
| if inserted.entry(short).or_default().insert(myname) { |
| let short = short.to_string(); |
| let myname = myname.to_string(); |
| map.entry(short).or_default().push(myname); |
| } |
| } |
| |
| match self.shared.module_sorting { |
| ModuleSorting::Alphabetical => { |
| for items in map.values_mut() { |
| items.sort(); |
| } |
| } |
| ModuleSorting::DeclarationOrder => {} |
| } |
| map |
| } |
| |
| /// Generates a url appropriate for an `href` attribute back to the source of |
| /// this item. |
| /// |
| /// The url generated, when clicked, will redirect the browser back to the |
| /// original source code. |
| /// |
| /// If `None` is returned, then a source link couldn't be generated. This |
| /// may happen, for example, with externally inlined items where the source |
| /// of their crate documentation isn't known. |
| pub(super) fn src_href(&self, item: &clean::Item) -> Option<String> { |
| self.href_from_span(item.span(self.tcx())?, true) |
| } |
| |
| pub(crate) fn href_from_span(&self, span: clean::Span, with_lines: bool) -> Option<String> { |
| let mut root = self.root_path(); |
| let mut path: String; |
| let cnum = span.cnum(self.sess()); |
| |
| // We can safely ignore synthetic `SourceFile`s. |
| let file = match span.filename(self.sess()) { |
| FileName::Real(ref path) => path.local_path_if_available().to_path_buf(), |
| _ => return None, |
| }; |
| let file = &file; |
| |
| let krate_sym; |
| let (krate, path) = if cnum == LOCAL_CRATE { |
| if let Some(path) = self.shared.local_sources.get(file) { |
| (self.shared.layout.krate.as_str(), path) |
| } else { |
| return None; |
| } |
| } else { |
| let (krate, src_root) = match *self.cache().extern_locations.get(&cnum)? { |
| ExternalLocation::Local => { |
| let e = ExternalCrate { crate_num: cnum }; |
| (e.name(self.tcx()), e.src_root(self.tcx())) |
| } |
| ExternalLocation::Remote(ref s) => { |
| root = s.to_string(); |
| let e = ExternalCrate { crate_num: cnum }; |
| (e.name(self.tcx()), e.src_root(self.tcx())) |
| } |
| ExternalLocation::Unknown => return None, |
| }; |
| |
| let href = RefCell::new(PathBuf::new()); |
| sources::clean_path( |
| &src_root, |
| file, |
| |component| { |
| href.borrow_mut().push(component); |
| }, |
| || { |
| href.borrow_mut().pop(); |
| }, |
| ); |
| |
| path = href.into_inner().to_string_lossy().into_owned(); |
| |
| if let Some(c) = path.as_bytes().last() && *c != b'/' { |
| path.push('/'); |
| } |
| |
| let mut fname = file.file_name().expect("source has no filename").to_os_string(); |
| fname.push(".html"); |
| path.push_str(&fname.to_string_lossy()); |
| krate_sym = krate; |
| (krate_sym.as_str(), &path) |
| }; |
| |
| let anchor = if with_lines { |
| let loline = span.lo(self.sess()).line; |
| let hiline = span.hi(self.sess()).line; |
| format!( |
| "#{}", |
| if loline == hiline { loline.to_string() } else { format!("{loline}-{hiline}") } |
| ) |
| } else { |
| "".to_string() |
| }; |
| Some(format!( |
| "{root}src/{krate}/{path}{anchor}", |
| root = Escape(&root), |
| krate = krate, |
| path = path, |
| anchor = anchor |
| )) |
| } |
| |
| pub(crate) fn href_from_span_relative( |
| &self, |
| span: clean::Span, |
| relative_to: &str, |
| ) -> Option<String> { |
| self.href_from_span(span, false).map(|s| { |
| let mut url = UrlPartsBuilder::new(); |
| let mut dest_href_parts = s.split('/'); |
| let mut cur_href_parts = relative_to.split('/'); |
| for (cur_href_part, dest_href_part) in (&mut cur_href_parts).zip(&mut dest_href_parts) { |
| if cur_href_part != dest_href_part { |
| url.push(dest_href_part); |
| break; |
| } |
| } |
| for dest_href_part in dest_href_parts { |
| url.push(dest_href_part); |
| } |
| let loline = span.lo(self.sess()).line; |
| let hiline = span.hi(self.sess()).line; |
| format!( |
| "{}{}#{}", |
| "../".repeat(cur_href_parts.count()), |
| url.finish(), |
| if loline == hiline { loline.to_string() } else { format!("{loline}-{hiline}") } |
| ) |
| }) |
| } |
| } |
| |
| /// Generates the documentation for `crate` into the directory `dst` |
| impl<'tcx> FormatRenderer<'tcx> for Context<'tcx> { |
| fn descr() -> &'static str { |
| "html" |
| } |
| |
| const RUN_ON_MODULE: bool = true; |
| |
| fn init( |
| krate: clean::Crate, |
| options: RenderOptions, |
| cache: Cache, |
| tcx: TyCtxt<'tcx>, |
| ) -> Result<(Self, clean::Crate), Error> { |
| // need to save a copy of the options for rendering the index page |
| let md_opts = options.clone(); |
| let emit_crate = options.should_emit_crate(); |
| let RenderOptions { |
| output, |
| external_html, |
| id_map, |
| playground_url, |
| module_sorting, |
| themes: style_files, |
| default_settings, |
| extension_css, |
| resource_suffix, |
| static_root_path, |
| generate_redirect_map, |
| show_type_layout, |
| generate_link_to_definition, |
| call_locations, |
| no_emit_shared, |
| html_no_source, |
| .. |
| } = options; |
| |
| let src_root = match krate.src(tcx) { |
| FileName::Real(ref p) => match p.local_path_if_available().parent() { |
| Some(p) => p.to_path_buf(), |
| None => PathBuf::new(), |
| }, |
| _ => PathBuf::new(), |
| }; |
| // If user passed in `--playground-url` arg, we fill in crate name here |
| let mut playground = None; |
| if let Some(url) = playground_url { |
| playground = Some(markdown::Playground { crate_name: Some(krate.name(tcx)), url }); |
| } |
| let krate_version = cache.crate_version.as_deref().unwrap_or_default(); |
| let mut layout = layout::Layout { |
| logo: String::new(), |
| favicon: String::new(), |
| external_html, |
| default_settings, |
| krate: krate.name(tcx).to_string(), |
| krate_version: krate_version.to_string(), |
| css_file_extension: extension_css, |
| scrape_examples_extension: !call_locations.is_empty(), |
| }; |
| let mut issue_tracker_base_url = None; |
| let mut include_sources = !html_no_source; |
| |
| // Crawl the crate attributes looking for attributes which control how we're |
| // going to emit HTML |
| for attr in krate.module.attrs.lists(sym::doc) { |
| match (attr.name_or_empty(), attr.value_str()) { |
| (sym::html_favicon_url, Some(s)) => { |
| layout.favicon = s.to_string(); |
| } |
| (sym::html_logo_url, Some(s)) => { |
| layout.logo = s.to_string(); |
| } |
| (sym::html_playground_url, Some(s)) => { |
| playground = Some(markdown::Playground { |
| crate_name: Some(krate.name(tcx)), |
| url: s.to_string(), |
| }); |
| } |
| (sym::issue_tracker_base_url, Some(s)) => { |
| issue_tracker_base_url = Some(s.to_string()); |
| } |
| (sym::html_no_source, None) if attr.is_word() => { |
| include_sources = false; |
| } |
| _ => {} |
| } |
| } |
| |
| let (local_sources, matches) = collect_spans_and_sources( |
| tcx, |
| &krate, |
| &src_root, |
| include_sources, |
| generate_link_to_definition, |
| ); |
| |
| let (sender, receiver) = channel(); |
| let scx = SharedContext { |
| tcx, |
| src_root, |
| local_sources, |
| issue_tracker_base_url, |
| layout, |
| created_dirs: Default::default(), |
| module_sorting, |
| style_files, |
| resource_suffix, |
| static_root_path, |
| fs: DocFS::new(sender), |
| codes: ErrorCodes::from(options.unstable_features.is_nightly_build()), |
| playground, |
| all: RefCell::new(AllTypes::new()), |
| errors: receiver, |
| redirections: if generate_redirect_map { Some(Default::default()) } else { None }, |
| show_type_layout, |
| span_correspondence_map: matches, |
| cache, |
| call_locations, |
| }; |
| |
| let dst = output; |
| scx.ensure_dir(&dst)?; |
| |
| let mut cx = Context { |
| current: Vec::new(), |
| dst, |
| render_redirect_pages: false, |
| id_map, |
| deref_id_map: Default::default(), |
| shared: Rc::new(scx), |
| include_sources, |
| types_with_notable_traits: FxHashSet::default(), |
| is_inside_inlined_module: false, |
| }; |
| |
| if emit_crate { |
| sources::render(&mut cx, &krate)?; |
| } |
| |
| if !no_emit_shared { |
| // Build our search index |
| let index = build_index(&krate, &mut Rc::get_mut(&mut cx.shared).unwrap().cache, tcx); |
| |
| // Write shared runs within a flock; disable thread dispatching of IO temporarily. |
| Rc::get_mut(&mut cx.shared).unwrap().fs.set_sync_only(true); |
| write_shared(&mut cx, &krate, index, &md_opts)?; |
| Rc::get_mut(&mut cx.shared).unwrap().fs.set_sync_only(false); |
| } |
| |
| Ok((cx, krate)) |
| } |
| |
| fn make_child_renderer(&self) -> Self { |
| Self { |
| current: self.current.clone(), |
| dst: self.dst.clone(), |
| render_redirect_pages: self.render_redirect_pages, |
| deref_id_map: Default::default(), |
| id_map: IdMap::new(), |
| shared: Rc::clone(&self.shared), |
| include_sources: self.include_sources, |
| types_with_notable_traits: FxHashSet::default(), |
| is_inside_inlined_module: self.is_inside_inlined_module, |
| } |
| } |
| |
| fn after_krate(&mut self) -> Result<(), Error> { |
| let crate_name = self.tcx().crate_name(LOCAL_CRATE); |
| let final_file = self.dst.join(crate_name.as_str()).join("all.html"); |
| let settings_file = self.dst.join("settings.html"); |
| let help_file = self.dst.join("help.html"); |
| let scrape_examples_help_file = self.dst.join("scrape-examples-help.html"); |
| |
| let mut root_path = self.dst.to_str().expect("invalid path").to_owned(); |
| if !root_path.ends_with('/') { |
| root_path.push('/'); |
| } |
| let shared = Rc::clone(&self.shared); |
| let mut page = layout::Page { |
| title: "List of all items in this crate", |
| css_class: "mod sys", |
| root_path: "../", |
| static_root_path: shared.static_root_path.as_deref(), |
| description: "List of all items in this crate", |
| resource_suffix: &shared.resource_suffix, |
| rust_logo: has_doc_flag(self.tcx(), LOCAL_CRATE.as_def_id(), sym::rust_logo), |
| }; |
| let all = shared.all.replace(AllTypes::new()); |
| let mut sidebar = Buffer::html(); |
| |
| let blocks = sidebar_module_like(all.item_sections()); |
| let bar = Sidebar { |
| title_prefix: "", |
| title: "", |
| is_crate: false, |
| is_mod: false, |
| blocks: vec![blocks], |
| path: String::new(), |
| }; |
| |
| bar.render_into(&mut sidebar).unwrap(); |
| |
| let v = layout::render( |
| &shared.layout, |
| &page, |
| sidebar.into_inner(), |
| |buf: &mut Buffer| all.print(buf), |
| &shared.style_files, |
| ); |
| shared.fs.write(final_file, v)?; |
| |
| // Generating settings page. |
| page.title = "Settings"; |
| page.description = "Settings of Rustdoc"; |
| page.root_path = "./"; |
| page.rust_logo = true; |
| |
| let sidebar = "<h2 class=\"location\">Settings</h2><div class=\"sidebar-elems\"></div>"; |
| let v = layout::render( |
| &shared.layout, |
| &page, |
| sidebar, |
| |buf: &mut Buffer| { |
| write!( |
| buf, |
| "<div class=\"main-heading\">\ |
| <h1>Rustdoc settings</h1>\ |
| <span class=\"out-of-band\">\ |
| <a id=\"back\" href=\"javascript:void(0)\" onclick=\"history.back();\">\ |
| Back\ |
| </a>\ |
| </span>\ |
| </div>\ |
| <noscript>\ |
| <section>\ |
| You need to enable JavaScript be able to update your settings.\ |
| </section>\ |
| </noscript>\ |
| <script defer src=\"{static_root_path}{settings_js}\"></script>", |
| static_root_path = page.get_static_root_path(), |
| settings_js = static_files::STATIC_FILES.settings_js, |
| ); |
| // Pre-load all theme CSS files, so that switching feels seamless. |
| // |
| // When loading settings.html as a popover, the equivalent HTML is |
| // generated in main.js. |
| for file in &shared.style_files { |
| if let Ok(theme) = file.basename() { |
| write!( |
| buf, |
| "<link rel=\"preload\" href=\"{root_path}{theme}{suffix}.css\" \ |
| as=\"style\">", |
| root_path = page.static_root_path.unwrap_or(""), |
| suffix = page.resource_suffix, |
| ); |
| } |
| } |
| }, |
| &shared.style_files, |
| ); |
| shared.fs.write(settings_file, v)?; |
| |
| // Generating help page. |
| page.title = "Help"; |
| page.description = "Documentation for Rustdoc"; |
| page.root_path = "./"; |
| page.rust_logo = true; |
| |
| let sidebar = "<h2 class=\"location\">Help</h2><div class=\"sidebar-elems\"></div>"; |
| let v = layout::render( |
| &shared.layout, |
| &page, |
| sidebar, |
| |buf: &mut Buffer| { |
| write!( |
| buf, |
| "<div class=\"main-heading\">\ |
| <h1>Rustdoc help</h1>\ |
| <span class=\"out-of-band\">\ |
| <a id=\"back\" href=\"javascript:void(0)\" onclick=\"history.back();\">\ |
| Back\ |
| </a>\ |
| </span>\ |
| </div>\ |
| <noscript>\ |
| <section>\ |
| <p>You need to enable JavaScript to use keyboard commands or search.</p>\ |
| <p>For more information, browse the <a href=\"https://doc.rust-lang.org/rustdoc/\">rustdoc handbook</a>.</p>\ |
| </section>\ |
| </noscript>", |
| ) |
| }, |
| &shared.style_files, |
| ); |
| shared.fs.write(help_file, v)?; |
| |
| if shared.layout.scrape_examples_extension { |
| page.title = "About scraped examples"; |
| page.description = "How the scraped examples feature works in Rustdoc"; |
| let v = layout::render( |
| &shared.layout, |
| &page, |
| "", |
| scrape_examples_help(&*shared), |
| &shared.style_files, |
| ); |
| shared.fs.write(scrape_examples_help_file, v)?; |
| } |
| |
| if let Some(ref redirections) = shared.redirections && !redirections.borrow().is_empty() { |
| let redirect_map_path = |
| self.dst.join(crate_name.as_str()).join("redirect-map.json"); |
| let paths = serde_json::to_string(&*redirections.borrow()).unwrap(); |
| shared.ensure_dir(&self.dst.join(crate_name.as_str()))?; |
| shared.fs.write(redirect_map_path, paths)?; |
| } |
| |
| // No need for it anymore. |
| drop(shared); |
| |
| // Flush pending errors. |
| Rc::get_mut(&mut self.shared).unwrap().fs.close(); |
| let nb_errors = |
| self.shared.errors.iter().map(|err| self.tcx().sess.struct_err(err).emit()).count(); |
| if nb_errors > 0 { |
| Err(Error::new(io::Error::new(io::ErrorKind::Other, "I/O error"), "")) |
| } else { |
| Ok(()) |
| } |
| } |
| |
| fn mod_item_in(&mut self, item: &clean::Item) -> Result<(), Error> { |
| // Stripped modules survive the rustdoc passes (i.e., `strip-private`) |
| // if they contain impls for public types. These modules can also |
| // contain items such as publicly re-exported structures. |
| // |
| // External crates will provide links to these structures, so |
| // these modules are recursed into, but not rendered normally |
| // (a flag on the context). |
| if !self.render_redirect_pages { |
| self.render_redirect_pages = item.is_stripped(); |
| } |
| let item_name = item.name.unwrap(); |
| self.dst.push(&*item_name.as_str()); |
| self.current.push(item_name); |
| |
| info!("Recursing into {}", self.dst.display()); |
| |
| if !item.is_stripped() { |
| let buf = self.render_item(item, true); |
| // buf will be empty if the module is stripped and there is no redirect for it |
| if !buf.is_empty() { |
| self.shared.ensure_dir(&self.dst)?; |
| let joint_dst = self.dst.join("index.html"); |
| self.shared.fs.write(joint_dst, buf)?; |
| } |
| } |
| if !self.is_inside_inlined_module { |
| if let Some(def_id) = item.def_id() && self.cache().inlined_items.contains(&def_id) { |
| self.is_inside_inlined_module = true; |
| } |
| } else if !self.cache().document_hidden && item.is_doc_hidden() { |
| // We're not inside an inlined module anymore since this one cannot be re-exported. |
| self.is_inside_inlined_module = false; |
| } |
| |
| // Render sidebar-items.js used throughout this module. |
| if !self.render_redirect_pages { |
| let (clean::StrippedItem(box clean::ModuleItem(ref module)) |
| | clean::ModuleItem(ref module)) = *item.kind |
| else { |
| unreachable!() |
| }; |
| let items = self.build_sidebar_items(module); |
| let js_dst = self.dst.join(&format!("sidebar-items{}.js", self.shared.resource_suffix)); |
| let v = format!("window.SIDEBAR_ITEMS = {};", serde_json::to_string(&items).unwrap()); |
| self.shared.fs.write(js_dst, v)?; |
| } |
| Ok(()) |
| } |
| |
| fn mod_item_out(&mut self) -> Result<(), Error> { |
| info!("Recursed; leaving {}", self.dst.display()); |
| |
| // Go back to where we were at |
| self.dst.pop(); |
| self.current.pop(); |
| Ok(()) |
| } |
| |
| fn item(&mut self, item: clean::Item) -> Result<(), Error> { |
| // Stripped modules survive the rustdoc passes (i.e., `strip-private`) |
| // if they contain impls for public types. These modules can also |
| // contain items such as publicly re-exported structures. |
| // |
| // External crates will provide links to these structures, so |
| // these modules are recursed into, but not rendered normally |
| // (a flag on the context). |
| if !self.render_redirect_pages { |
| self.render_redirect_pages = item.is_stripped(); |
| } |
| |
| let buf = self.render_item(&item, false); |
| // buf will be empty if the item is stripped and there is no redirect for it |
| if !buf.is_empty() { |
| let name = item.name.as_ref().unwrap(); |
| let item_type = item.type_(); |
| let file_name = &item_path(item_type, name.as_str()); |
| self.shared.ensure_dir(&self.dst)?; |
| let joint_dst = self.dst.join(file_name); |
| self.shared.fs.write(joint_dst, buf)?; |
| |
| if !self.render_redirect_pages { |
| self.shared.all.borrow_mut().append(full_path(self, &item), &item_type); |
| } |
| // If the item is a macro, redirect from the old macro URL (with !) |
| // to the new one (without). |
| if item_type == ItemType::Macro { |
| let redir_name = format!("{item_type}.{name}!.html"); |
| if let Some(ref redirections) = self.shared.redirections { |
| let crate_name = &self.shared.layout.krate; |
| redirections.borrow_mut().insert( |
| format!("{crate_name}/{redir_name}"), |
| format!("{crate_name}/{file_name}"), |
| ); |
| } else { |
| let v = layout::redirect(file_name); |
| let redir_dst = self.dst.join(redir_name); |
| self.shared.fs.write(redir_dst, v)?; |
| } |
| } |
| } |
| |
| Ok(()) |
| } |
| |
| fn cache(&self) -> &Cache { |
| &self.shared.cache |
| } |
| } |
