Rollup merge of rust-lang#82963 - camelid:move-sharedcontext, r=GuillaumeGomez

Move `SharedContext` to `context.rs`

It is tightly connected to `Context` and is primarily used as a field in
`Context`. Thus, it should be next to `Context`.

Author: JohnTitor

src/librustdoc/html/render/context.rs

@@ -1,11 +1,11 @@
 use std::cell::RefCell;
 use std::collections::BTreeMap;
 use std::io;
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 use std::rc::Rc;
-use std::sync::mpsc::channel;
+use std::sync::mpsc::{channel, Receiver};
 
-use rustc_data_structures::fx::FxHashMap;
+use rustc_data_structures::fx::{FxHashMap, FxHashSet};
 use rustc_hir::def_id::{DefId, LOCAL_CRATE};
 use rustc_middle::ty::TyCtxt;
 use rustc_session::Session;
@@ -17,8 +17,8 @@ use super::cache::{build_index, ExternalLocation};
 use super::print_item::{full_path, item_path, print_item};
 use super::write_shared::write_shared;
 use super::{
-    print_sidebar, settings, AllTypes, NameDoc, SharedContext, StylePath, BASIC_KEYWORDS,
-    CURRENT_DEPTH, INITIAL_IDS,
+    print_sidebar, settings, AllTypes, NameDoc, StylePath, BASIC_KEYWORDS, CURRENT_DEPTH,
+    INITIAL_IDS,
 };
 
 use crate::clean::{self, AttributesExt};
@@ -78,6 +78,74 @@ crate struct Context<'tcx> {
 #[cfg(target_arch = "x86_64")]
 rustc_data_structures::static_assert_size!(Context<'_>, 152);
 
+/// Shared mutable state used in [`Context`] and elsewhere.
+crate struct SharedContext<'tcx> {
+    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.
+    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).
+    crate layout: layout::Layout,
+    /// This flag indicates whether `[src]` links should be generated or not. If
+    /// the source files are present in the html rendering, then this will be
+    /// `true`.
+    crate include_sources: bool,
+    /// The local file sources we've emitted and their respective url-paths.
+    crate local_sources: FxHashMap<PathBuf, String>,
+    /// Whether the collapsed pass ran
+    pub(super) collapsed: 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.
+    pub(super) 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) sort_modules_alphabetically: bool,
+    /// Additional CSS files to be added to the generated docs.
+    crate style_files: Vec<StylePath>,
+    /// Suffix to be added on resource files (if suffix is "-v2" then "light.css" becomes
+    /// "light-v2.css").
+    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.
+    crate static_root_path: Option<String>,
+    /// The fs handle we are working with.
+    crate fs: DocFS,
+    /// The default edition used to parse doctests.
+    crate edition: Edition,
+    pub(super) codes: ErrorCodes,
+    pub(super) playground: Option<markdown::Playground>,
+    pub(super) all: RefCell<AllTypes>,
+    /// Storage for the errors produced while generating documentation so they
+    /// can be printed together at the end.
+    pub(super) 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.
+    pub(super) redirections: Option<RefCell<FxHashMap<String, String>>>,
+}
+
+impl SharedContext<'_> {
+    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(())
+    }
+
+    /// Based on whether the `collapse-docs` pass was run, return either the `doc_value` or the
+    /// `collapsed_doc_value` of the given item.
+    crate fn maybe_collapsed_doc_value<'a>(&self, item: &'a clean::Item) -> Option<String> {
+        if self.collapsed { item.collapsed_doc_value() } else { item.doc_value() }
+    }
+}
+
 impl<'tcx> Context<'tcx> {
     pub(super) fn path(&self, filename: &str) -> PathBuf {
         // We use splitn vs Path::extension here because we might get a filename

src/librustdoc/html/render/mod.rs

@@ -35,32 +35,29 @@ mod write_shared;
 crate use context::*;
 crate use write_shared::FILES_UNVERSIONED;
 
-use std::cell::{Cell, RefCell};
+use std::cell::Cell;
 use std::collections::VecDeque;
 use std::default::Default;
 use std::fmt;
-use std::path::{Path, PathBuf};
+use std::path::PathBuf;
 use std::str;
 use std::string::ToString;
-use std::sync::mpsc::Receiver;
 
 use itertools::Itertools;
 use rustc_ast_pretty::pprust;
 use rustc_attr::{Deprecation, StabilityLevel};
-use rustc_data_structures::fx::{FxHashMap, FxHashSet};
+use rustc_data_structures::fx::FxHashSet;
 use rustc_hir as hir;
 use rustc_hir::def::CtorKind;
 use rustc_hir::def_id::DefId;
 use rustc_hir::Mutability;
 use rustc_middle::middle::stability;
-use rustc_middle::ty::TyCtxt;
-use rustc_span::edition::Edition;
 use rustc_span::symbol::{kw, sym, Symbol};
 use serde::ser::SerializeSeq;
 use serde::{Serialize, Serializer};
 
 use crate::clean::{self, GetDefId, RenderedLink, SelfTy, TypeKind};
-use crate::docfs::{DocFS, PathError};
+use crate::docfs::PathError;
 use crate::error::Error;
 use crate::formats::cache::Cache;
 use crate::formats::item_type::ItemType;
@@ -70,8 +67,7 @@ use crate::html::format::{
     href, print_abi_with_space, print_default_space, print_generic_bounds, print_where_clause,
     Buffer, PrintWithSpace,
 };
-use crate::html::layout;
-use crate::html::markdown::{self, ErrorCodes, Markdown, MarkdownHtml, MarkdownSummaryLine};
+use crate::html::markdown::{Markdown, MarkdownHtml, MarkdownSummaryLine};
 
 /// A pair of name and its optional document.
 crate type NameDoc = (String, Option<String>);
@@ -82,74 +78,6 @@ crate fn ensure_trailing_slash(v: &str) -> impl fmt::Display + '_ {
     })
 }
 
-/// Shared mutable state used in [`Context`] and elsewhere.
-crate struct SharedContext<'tcx> {
-    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.
-    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).
-    crate layout: layout::Layout,
-    /// This flag indicates whether `[src]` links should be generated or not. If
-    /// the source files are present in the html rendering, then this will be
-    /// `true`.
-    crate include_sources: bool,
-    /// The local file sources we've emitted and their respective url-paths.
-    crate local_sources: FxHashMap<PathBuf, String>,
-    /// Whether the collapsed pass ran
-    collapsed: bool,
-    /// The base-URL of the issue tracker for when an item has been tagged with
-    /// an issue number.
-    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).
-    sort_modules_alphabetically: bool,
-    /// Additional CSS files to be added to the generated docs.
-    crate style_files: Vec<StylePath>,
-    /// Suffix to be added on resource files (if suffix is "-v2" then "light.css" becomes
-    /// "light-v2.css").
-    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.
-    crate static_root_path: Option<String>,
-    /// The fs handle we are working with.
-    crate fs: DocFS,
-    /// The default edition used to parse doctests.
-    crate edition: Edition,
-    codes: ErrorCodes,
-    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>>>,
-}
-
-impl SharedContext<'_> {
-    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(())
-    }
-
-    /// Based on whether the `collapse-docs` pass was run, return either the `doc_value` or the
-    /// `collapsed_doc_value` of the given item.
-    crate fn maybe_collapsed_doc_value<'a>(&self, item: &'a clean::Item) -> Option<String> {
-        if self.collapsed { item.collapsed_doc_value() } else { item.doc_value() }
-    }
-}
-
 // Helper structs for rendering items/sidebars and carrying along contextual
 // information