1 // Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
12 use rustc_driver::{driver, target_features, abort_on_err};
13 use rustc::session::{self, config};
14 use rustc::hir::def_id::DefId;
15 use rustc::hir::def::Def;
16 use rustc::middle::privacy::AccessLevels;
17 use rustc::ty::{self, TyCtxt, AllArenas};
18 use rustc::hir::map as hir_map;
20 use rustc::util::nodemap::FxHashMap;
22 use rustc_resolve as resolve;
23 use rustc_metadata::creader::CrateLoader;
24 use rustc_metadata::cstore::CStore;
27 use syntax::feature_gate::UnstableFeatures;
29 use errors::emitter::ColorConfig;
31 use std::cell::{RefCell, Cell};
34 use std::path::PathBuf;
36 use visit_ast::RustdocVisitor;
39 use html::markdown::RenderType;
40 use html::render::RenderInfo;
42 pub use rustc::session::config::Input;
43 pub use rustc::session::search_paths::SearchPaths;
45 pub type ExternalPaths = FxHashMap<DefId, (Vec<String>, clean::TypeKind)>;
47 pub struct DocContext<'a, 'tcx: 'a, 'rcx> {
48 pub tcx: TyCtxt<'a, 'tcx, 'tcx>,
49 pub resolver: resolve::Resolver<'rcx>,
50 pub populated_all_crate_impls: Cell<bool>,
51 // Note that external items for which `doc(hidden)` applies to are shown as
52 // non-reachable while local items aren't. This is because we're reusing
53 // the access levels from crateanalysis.
54 /// Later on moved into `clean::Crate`
55 pub access_levels: RefCell<AccessLevels<DefId>>,
56 /// Later on moved into `html::render::CACHE_KEY`
57 pub renderinfo: RefCell<RenderInfo>,
58 /// Later on moved through `clean::Crate` into `html::render::CACHE_KEY`
59 pub external_traits: RefCell<FxHashMap<DefId, clean::Trait>>,
60 /// Which markdown renderer to use when extracting links.
61 pub render_type: RenderType,
63 // The current set of type and lifetime substitutions,
64 // for expanding type aliases at the HIR level:
66 /// Table type parameter definition -> substituted type
67 pub ty_substs: RefCell<FxHashMap<Def, clean::Type>>,
68 /// Table node id of lifetime parameter definition -> substituted lifetime
69 pub lt_substs: RefCell<FxHashMap<DefId, clean::Lifetime>>,
72 impl<'a, 'tcx, 'rcx> DocContext<'a, 'tcx, 'rcx> {
73 pub fn sess(&self) -> &session::Session {
77 /// Call the closure with the given parameters set as
78 /// the substitutions for a type alias' RHS.
79 pub fn enter_alias<F, R>(&self,
80 ty_substs: FxHashMap<Def, clean::Type>,
81 lt_substs: FxHashMap<DefId, clean::Lifetime>,
83 where F: FnOnce() -> R {
84 let (old_tys, old_lts) =
85 (mem::replace(&mut *self.ty_substs.borrow_mut(), ty_substs),
86 mem::replace(&mut *self.lt_substs.borrow_mut(), lt_substs));
88 *self.ty_substs.borrow_mut() = old_tys;
89 *self.lt_substs.borrow_mut() = old_lts;
94 pub trait DocAccessLevels {
95 fn is_doc_reachable(&self, did: DefId) -> bool;
98 impl DocAccessLevels for AccessLevels<DefId> {
99 fn is_doc_reachable(&self, did: DefId) -> bool {
105 pub fn run_core(search_paths: SearchPaths,
107 externs: config::Externs,
109 triple: Option<String>,
110 maybe_sysroot: Option<PathBuf>,
111 allow_warnings: bool,
112 force_unstable_if_unmarked: bool,
113 render_type: RenderType) -> (clean::Crate, RenderInfo)
115 // Parse, resolve, and typecheck the given crate.
117 let cpath = match input {
118 Input::File(ref p) => Some(p.clone()),
122 let warning_lint = lint::builtin::WARNINGS.name_lower();
124 let sessopts = config::Options {
127 crate_types: vec![config::CrateTypeRlib],
128 lint_opts: if !allow_warnings { vec![(warning_lint, lint::Allow)] } else { vec![] },
129 lint_cap: Some(lint::Allow),
131 target_triple: triple.unwrap_or(config::host_triple().to_string()),
132 // Ensure that rustdoc works even if rustc is feature-staged
133 unstable_features: UnstableFeatures::Allow,
134 actually_rustdoc: true,
135 debugging_opts: config::DebuggingOptions {
136 force_unstable_if_unmarked,
137 ..config::basic_debugging_options()
139 ..config::basic_options().clone()
142 let codemap = Rc::new(codemap::CodeMap::new(sessopts.file_path_mapping()));
143 let diagnostic_handler = errors::Handler::with_tty_emitter(ColorConfig::Auto,
146 Some(codemap.clone()));
148 let mut sess = session::build_session_(
149 sessopts, cpath, diagnostic_handler, codemap,
151 let trans = rustc_trans::LlvmTransCrate::new(&sess);
152 let cstore = Rc::new(CStore::new(trans.metadata_loader()));
153 rustc_lint::register_builtins(&mut sess.lint_store.borrow_mut(), Some(&sess));
155 let mut cfg = config::build_configuration(&sess, config::parse_cfgspecs(cfgs));
156 target_features::add_configuration(&mut cfg, &sess, &*trans);
157 sess.parse_sess.config = cfg;
159 let control = &driver::CompileController::basic();
161 let krate = panictry!(driver::phase_1_parse_input(control, &sess, &input));
163 let name = ::rustc_trans_utils::link::find_crate_name(Some(&sess), &krate.attrs, &input);
165 let driver::ExpansionResult {
172 let result = driver::phase_2_configure_and_expand(&sess,
178 resolve::MakeGlobMap::No,
180 abort_on_err(result, &sess)
183 let arenas = AllArenas::new();
184 let mut crate_loader = CrateLoader::new(&sess, &cstore, &name);
185 let resolver_arenas = resolve::Resolver::arenas();
186 let hir_map = hir_map::map_crate(&sess, &*cstore, &mut hir_forest, &defs);
187 let output_filenames = driver::build_output_filenames(&input,
193 abort_on_err(driver::phase_3_run_analysis_passes(&*trans,
203 |tcx, analysis, _, result| {
204 if let Err(_) = result {
205 sess.fatal("Compilation failed, aborting rustdoc");
208 let ty::CrateAnalysis { access_levels, .. } = analysis;
210 // Convert from a NodeId set to a DefId set since we don't always have easy access
211 // to the map from defid -> nodeid
212 let access_levels = AccessLevels {
213 map: access_levels.map.iter()
214 .map(|(&k, &v)| (tcx.hir.local_def_id(k), v))
218 // Set up a Resolver so that the doc cleaning can look up paths in the docs
219 let mut resolver = resolve::Resolver::new(&sess,
223 resolve::MakeGlobMap::No,
226 resolver.resolve_crate(&expanded_crate);
228 let ctxt = DocContext {
231 populated_all_crate_impls: Cell::new(false),
232 access_levels: RefCell::new(access_levels),
233 external_traits: Default::default(),
234 renderinfo: Default::default(),
236 ty_substs: Default::default(),
237 lt_substs: Default::default(),
239 debug!("crate: {:?}", tcx.hir.krate());
242 let mut v = RustdocVisitor::new(&*cstore, &ctxt);
243 v.visit(tcx.hir.krate());
247 (krate, ctxt.renderinfo.into_inner())