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.
11 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
12 html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
13 html_root_url = "https://doc.rust-lang.org/nightly/",
14 html_playground_url = "https://play.rust-lang.org/")]
16 #![feature(rustc_private)]
17 #![feature(box_patterns)]
18 #![feature(box_syntax)]
19 #![cfg_attr(not(stage0), feature(nll))]
20 #![cfg_attr(not(stage0), feature(infer_outlives_requirements))]
21 #![feature(set_stdio)]
22 #![feature(slice_sort_by_cached_key)]
24 #![feature(vec_remove_item)]
25 #![feature(ptr_offset_from)]
26 #![feature(crate_visibility_modifier)]
29 #![recursion_limit="256"]
33 extern crate env_logger;
35 extern crate rustc_data_structures;
36 extern crate rustc_codegen_utils;
37 extern crate rustc_driver;
38 extern crate rustc_resolve;
39 extern crate rustc_lint;
40 extern crate rustc_metadata;
41 extern crate rustc_target;
42 extern crate rustc_typeck;
43 extern crate serialize;
44 #[macro_use] extern crate syntax;
45 extern crate syntax_pos;
46 extern crate test as testing;
47 #[macro_use] extern crate log;
48 extern crate rustc_errors as errors;
49 extern crate pulldown_cmark;
50 extern crate tempfile;
51 extern crate minifier;
53 extern crate serialize as rustc_serialize; // used by deriving
55 use errors::ColorConfig;
57 use std::collections::{BTreeMap, BTreeSet};
58 use std::default::Default;
61 use std::path::{Path, PathBuf};
63 use std::sync::mpsc::channel;
65 use syntax::edition::Edition;
66 use externalfiles::ExternalHtml;
67 use rustc::session::{early_warn, early_error};
68 use rustc::session::search_paths::SearchPaths;
69 use rustc::session::config::{ErrorOutputType, RustcOptGroup, Externs, CodegenOptions};
70 use rustc::session::config::{nightly_options, build_codegen_options};
71 use rustc_target::spec::TargetTriple;
72 use rustc::session::config::get_cmd_lint_options;
100 renderinfo: html::render::RenderInfo,
105 let thread_stack_size: usize = if cfg!(target_os = "haiku") {
106 16_000_000 // 16MB on Haiku
108 32_000_000 // 32MB on other platforms
110 rustc_driver::set_sigpipe_handler();
112 let res = std::thread::Builder::new().stack_size(thread_stack_size).spawn(move || {
113 syntax::with_globals(move || {
114 get_args().map(|args| main_args(&args)).unwrap_or(1)
116 }).unwrap().join().unwrap_or(rustc_driver::EXIT_FAILURE);
117 process::exit(res as i32);
120 fn get_args() -> Option<Vec<String>> {
121 env::args_os().enumerate()
122 .map(|(i, arg)| arg.into_string().map_err(|arg| {
123 early_warn(ErrorOutputType::default(),
124 &format!("Argument {} is not valid Unicode: {:?}", i, arg));
129 fn stable<F>(name: &'static str, f: F) -> RustcOptGroup
130 where F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static
132 RustcOptGroup::stable(name, f)
135 fn unstable<F>(name: &'static str, f: F) -> RustcOptGroup
136 where F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static
138 RustcOptGroup::unstable(name, f)
141 fn opts() -> Vec<RustcOptGroup> {
143 stable("h", |o| o.optflag("h", "help", "show this help message")),
144 stable("V", |o| o.optflag("V", "version", "print rustdoc's version")),
145 stable("v", |o| o.optflag("v", "verbose", "use verbose output")),
147 o.optopt("r", "input-format", "the input type of the specified file",
151 o.optopt("w", "output-format", "the output type to write", "[html]")
153 stable("o", |o| o.optopt("o", "output", "where to place the output", "PATH")),
154 stable("crate-name", |o| {
155 o.optopt("", "crate-name", "specify the name of this crate", "NAME")
158 o.optmulti("L", "library-path", "directory to add to crate search path",
161 stable("cfg", |o| o.optmulti("", "cfg", "pass a --cfg to rustc", "")),
162 stable("extern", |o| {
163 o.optmulti("", "extern", "pass an --extern to rustc", "NAME=PATH")
165 unstable("extern-html-root-url", |o| {
166 o.optmulti("", "extern-html-root-url",
167 "base URL to use for dependencies", "NAME=URL")
169 stable("plugin-path", |o| {
170 o.optmulti("", "plugin-path", "removed", "DIR")
173 o.optmulti("C", "codegen", "pass a codegen option to rustc", "OPT[=VALUE]")
175 stable("passes", |o| {
176 o.optmulti("", "passes",
177 "list of passes to also run, you might want \
178 to pass it multiple times; a value of `list` \
179 will print available passes",
182 stable("plugins", |o| {
183 o.optmulti("", "plugins", "removed",
186 stable("no-default", |o| {
187 o.optflag("", "no-defaults", "don't run the default passes")
189 stable("document-private-items", |o| {
190 o.optflag("", "document-private-items", "document private items")
192 stable("test", |o| o.optflag("", "test", "run code examples as tests")),
193 stable("test-args", |o| {
194 o.optmulti("", "test-args", "arguments to pass to the test runner",
197 stable("target", |o| o.optopt("", "target", "target triple to document", "TRIPLE")),
198 stable("markdown-css", |o| {
199 o.optmulti("", "markdown-css",
200 "CSS files to include via <link> in a rendered Markdown file",
203 stable("html-in-header", |o| {
204 o.optmulti("", "html-in-header",
205 "files to include inline in the <head> section of a rendered Markdown file \
206 or generated documentation",
209 stable("html-before-content", |o| {
210 o.optmulti("", "html-before-content",
211 "files to include inline between <body> and the content of a rendered \
212 Markdown file or generated documentation",
215 stable("html-after-content", |o| {
216 o.optmulti("", "html-after-content",
217 "files to include inline between the content and </body> of a rendered \
218 Markdown file or generated documentation",
221 unstable("markdown-before-content", |o| {
222 o.optmulti("", "markdown-before-content",
223 "files to include inline between <body> and the content of a rendered \
224 Markdown file or generated documentation",
227 unstable("markdown-after-content", |o| {
228 o.optmulti("", "markdown-after-content",
229 "files to include inline between the content and </body> of a rendered \
230 Markdown file or generated documentation",
233 stable("markdown-playground-url", |o| {
234 o.optopt("", "markdown-playground-url",
235 "URL to send code snippets to", "URL")
237 stable("markdown-no-toc", |o| {
238 o.optflag("", "markdown-no-toc", "don't include table of contents")
241 o.optopt("e", "extend-css",
242 "To add some CSS rules with a given file to generate doc with your \
243 own theme. However, your theme might break if the rustdoc's generated HTML \
244 changes, so be careful!", "PATH")
248 "internal and debugging options (only on nightly build)", "FLAG")
250 stable("sysroot", |o| {
251 o.optopt("", "sysroot", "Override the system root", "PATH")
253 unstable("playground-url", |o| {
254 o.optopt("", "playground-url",
255 "URL to send code snippets to, may be reset by --markdown-playground-url \
256 or `#![doc(html_playground_url=...)]`",
259 unstable("display-warnings", |o| {
260 o.optflag("", "display-warnings", "to print code warnings when testing doc")
262 unstable("crate-version", |o| {
263 o.optopt("", "crate-version", "crate version to print into documentation", "VERSION")
265 unstable("linker", |o| {
266 o.optopt("", "linker", "linker used for building executable test code", "PATH")
268 unstable("sort-modules-by-appearance", |o| {
269 o.optflag("", "sort-modules-by-appearance", "sort modules by where they appear in the \
270 program, rather than alphabetically")
272 unstable("themes", |o| {
273 o.optmulti("", "themes",
274 "additional themes which will be added to the generated docs",
277 unstable("theme-checker", |o| {
278 o.optmulti("", "theme-checker",
279 "check if given theme is valid",
282 unstable("resource-suffix", |o| {
285 "suffix to add to CSS and JavaScript files, e.g. \"light.css\" will become \
286 \"light-suffix.css\"",
289 unstable("edition", |o| {
290 o.optopt("", "edition",
291 "edition to use when compiling rust code (default: 2015)",
294 stable("color", |o| {
297 "Configure coloring of output:
298 auto = colorize, if output goes to a tty (default);
299 always = always colorize output;
300 never = never colorize output",
303 stable("error-format", |o| {
306 "How errors and other messages are produced",
309 unstable("disable-minification", |o| {
311 "disable-minification",
312 "Disable minification applied on JS files")
315 o.optmulti("W", "warn", "Set lint warnings", "OPT")
317 stable("allow", |o| {
318 o.optmulti("A", "allow", "Set lint allowed", "OPT")
321 o.optmulti("D", "deny", "Set lint denied", "OPT")
323 stable("forbid", |o| {
324 o.optmulti("F", "forbid", "Set lint forbidden", "OPT")
326 stable("cap-lints", |o| {
330 "Set the most restrictive lint level. \
331 More restrictive lints are capped at this \
332 level. By default, it is at `forbid` level.",
339 fn usage(argv0: &str) {
340 let mut options = getopts::Options::new();
341 for option in opts() {
342 (option.apply)(&mut options);
344 println!("{}", options.usage(&format!("{} [options] <input>", argv0)));
347 fn main_args(args: &[String]) -> isize {
348 let mut options = getopts::Options::new();
349 for option in opts() {
350 (option.apply)(&mut options);
352 let matches = match options.parse(&args[1..]) {
355 early_error(ErrorOutputType::default(), &err.to_string());
358 // Check for unstable options.
359 nightly_options::check_nightly_options(&matches, &opts());
361 if matches.opt_present("h") || matches.opt_present("help") {
364 } else if matches.opt_present("version") {
365 rustc_driver::version("rustdoc", &matches);
369 if matches.opt_strs("passes") == ["list"] {
370 println!("Available passes for running rustdoc:");
371 for pass in passes::PASSES {
372 println!("{:>20} - {}", pass.name(), pass.description());
374 println!("\nDefault passes for rustdoc:");
375 for &name in passes::DEFAULT_PASSES {
376 println!("{:>20}", name);
378 println!("\nPasses run with `--document-private-items`:");
379 for &name in passes::DEFAULT_PRIVATE_PASSES {
380 println!("{:>20}", name);
385 let color = match matches.opt_str("color").as_ref().map(|s| &s[..]) {
386 Some("auto") => ColorConfig::Auto,
387 Some("always") => ColorConfig::Always,
388 Some("never") => ColorConfig::Never,
389 None => ColorConfig::Auto,
391 early_error(ErrorOutputType::default(),
392 &format!("argument for --color must be `auto`, `always` or `never` \
393 (instead was `{}`)", arg));
396 let error_format = match matches.opt_str("error-format").as_ref().map(|s| &s[..]) {
397 Some("human") => ErrorOutputType::HumanReadable(color),
398 Some("json") => ErrorOutputType::Json(false),
399 Some("pretty-json") => ErrorOutputType::Json(true),
400 Some("short") => ErrorOutputType::Short(color),
401 None => ErrorOutputType::HumanReadable(color),
403 early_error(ErrorOutputType::default(),
404 &format!("argument for --error-format must be `human`, `json` or \
405 `short` (instead was `{}`)", arg));
409 let diag = core::new_handler(error_format, None);
411 // check for deprecated options
412 check_deprecated_options(&matches, &diag);
414 let to_check = matches.opt_strs("theme-checker");
415 if !to_check.is_empty() {
416 let paths = theme::load_css_paths(include_bytes!("html/static/themes/light.css"));
419 println!("rustdoc: [theme-checker] Starting tests!");
420 for theme_file in to_check.iter() {
421 print!(" - Checking \"{}\"...", theme_file);
422 let (success, differences) = theme::test_theme_against(theme_file, &paths, &diag);
423 if !differences.is_empty() || !success {
426 if !differences.is_empty() {
427 println!("{}", differences.join("\n"));
439 if matches.free.is_empty() {
440 diag.struct_err("missing file operand").emit();
443 if matches.free.len() > 1 {
444 diag.struct_err("too many file operands").emit();
447 let input = &matches.free[0];
449 let mut libs = SearchPaths::new();
450 for s in &matches.opt_strs("L") {
451 libs.add_path(s, error_format);
453 let externs = match parse_externs(&matches) {
456 diag.struct_err(&err.to_string()).emit();
460 let extern_urls = match parse_extern_html_roots(&matches) {
463 diag.struct_err(err).emit();
468 let test_args = matches.opt_strs("test-args");
469 let test_args: Vec<String> = test_args.iter()
470 .flat_map(|s| s.split_whitespace())
471 .map(|s| s.to_string())
474 let should_test = matches.opt_present("test");
475 let markdown_input = Path::new(input).extension()
476 .map_or(false, |e| e == "md" || e == "markdown");
478 let output = matches.opt_str("o").map(|s| PathBuf::from(&s));
479 let css_file_extension = matches.opt_str("e").map(|s| PathBuf::from(&s));
480 let mut cfgs = matches.opt_strs("cfg");
481 cfgs.push("rustdoc".to_string());
483 if let Some(ref p) = css_file_extension {
485 diag.struct_err("option --extend-css argument must be a file").emit();
490 let mut themes = Vec::new();
491 if matches.opt_present("themes") {
492 let paths = theme::load_css_paths(include_bytes!("html/static/themes/light.css"));
494 for (theme_file, theme_s) in matches.opt_strs("themes")
496 .map(|s| (PathBuf::from(&s), s.to_owned())) {
497 if !theme_file.is_file() {
498 diag.struct_err("option --themes arguments must all be files").emit();
501 let (success, ret) = theme::test_theme_against(&theme_file, &paths, &diag);
502 if !success || !ret.is_empty() {
503 diag.struct_err(&format!("invalid theme: \"{}\"", theme_s))
504 .help("check what's wrong with the --theme-checker option")
508 themes.push(theme_file);
512 let mut id_map = html::markdown::IdMap::new();
513 id_map.populate(html::render::initial_ids());
514 let external_html = match ExternalHtml::load(
515 &matches.opt_strs("html-in-header"),
516 &matches.opt_strs("html-before-content"),
517 &matches.opt_strs("html-after-content"),
518 &matches.opt_strs("markdown-before-content"),
519 &matches.opt_strs("markdown-after-content"), &diag, &mut id_map) {
523 let crate_name = matches.opt_str("crate-name");
524 let playground_url = matches.opt_str("playground-url");
525 let maybe_sysroot = matches.opt_str("sysroot").map(PathBuf::from);
526 let display_warnings = matches.opt_present("display-warnings");
527 let linker = matches.opt_str("linker").map(PathBuf::from);
528 let sort_modules_alphabetically = !matches.opt_present("sort-modules-by-appearance");
529 let resource_suffix = matches.opt_str("resource-suffix");
530 let enable_minification = !matches.opt_present("disable-minification");
532 let edition = matches.opt_str("edition").unwrap_or("2015".to_string());
533 let edition = match edition.parse() {
536 diag.struct_err("could not parse edition").emit();
541 let cg = build_codegen_options(&matches, ErrorOutputType::default());
543 match (should_test, markdown_input) {
545 return markdown::test(input, cfgs, libs, externs, test_args, maybe_sysroot,
546 display_warnings, linker, edition, cg, &diag)
549 return test::run(Path::new(input), cfgs, libs, externs, test_args, crate_name,
550 maybe_sysroot, display_warnings, linker, edition, cg)
552 (false, true) => return markdown::render(Path::new(input),
553 output.unwrap_or(PathBuf::from("doc")),
554 &matches, &external_html,
555 !matches.opt_present("markdown-no-toc"), &diag),
559 let output_format = matches.opt_str("w");
561 let res = acquire_input(PathBuf::from(input), externs, edition, cg, &matches, error_format,
563 let Output { krate, passes, renderinfo } = out;
564 let diag = core::new_handler(error_format, None);
565 info!("going to format");
566 match output_format.as_ref().map(|s| &**s) {
567 Some("html") | None => {
568 html::render::run(krate, extern_urls, &external_html, playground_url,
569 output.unwrap_or(PathBuf::from("doc")),
570 resource_suffix.unwrap_or(String::new()),
571 passes.into_iter().collect(),
574 sort_modules_alphabetically,
576 enable_minification, id_map)
577 .expect("failed to generate documentation");
581 diag.struct_err(&format!("unknown output format: {}", s)).emit();
586 res.unwrap_or_else(|s| {
587 diag.struct_err(&format!("input error: {}", s)).emit();
592 /// Looks inside the command line arguments to extract the relevant input format
593 /// and files and then generates the necessary rustdoc output for formatting.
594 fn acquire_input<R, F>(input: PathBuf,
598 matches: &getopts::Matches,
599 error_format: ErrorOutputType,
602 where R: 'static + Send, F: 'static + Send + FnOnce(Output) -> R {
603 match matches.opt_str("r").as_ref().map(|s| &**s) {
604 Some("rust") => Ok(rust_input(input, externs, edition, cg, matches, error_format, f)),
605 Some(s) => Err(format!("unknown input format: {}", s)),
606 None => Ok(rust_input(input, externs, edition, cg, matches, error_format, f))
610 /// Extracts `--extern CRATE=PATH` arguments from `matches` and
611 /// returns a map mapping crate names to their paths or else an
613 fn parse_externs(matches: &getopts::Matches) -> Result<Externs, String> {
614 let mut externs: BTreeMap<_, BTreeSet<_>> = BTreeMap::new();
615 for arg in &matches.opt_strs("extern") {
616 let mut parts = arg.splitn(2, '=');
617 let name = parts.next().ok_or("--extern value must not be empty".to_string())?;
618 let location = parts.next()
619 .ok_or("--extern value must be of the format `foo=bar`"
621 let name = name.to_string();
622 externs.entry(name).or_default().insert(location.to_string());
624 Ok(Externs::new(externs))
627 /// Extracts `--extern-html-root-url` arguments from `matches` and returns a map of crate names to
628 /// the given URLs. If an `--extern-html-root-url` argument was ill-formed, returns an error
629 /// describing the issue.
630 fn parse_extern_html_roots(matches: &getopts::Matches)
631 -> Result<BTreeMap<String, String>, &'static str>
633 let mut externs = BTreeMap::new();
634 for arg in &matches.opt_strs("extern-html-root-url") {
635 let mut parts = arg.splitn(2, '=');
636 let name = parts.next().ok_or("--extern-html-root-url must not be empty")?;
637 let url = parts.next().ok_or("--extern-html-root-url must be of the form name=url")?;
638 externs.insert(name.to_string(), url.to_string());
644 /// Interprets the input file as a rust source file, passing it through the
645 /// compiler all the way through the analysis passes. The rustdoc output is then
646 /// generated from the cleaned AST of the crate.
648 /// This form of input will run all of the plug/cleaning passes
649 fn rust_input<R, F>(cratefile: PathBuf,
653 matches: &getopts::Matches,
654 error_format: ErrorOutputType,
656 where R: 'static + Send,
657 F: 'static + Send + FnOnce(Output) -> R
659 let default_passes = if matches.opt_present("no-defaults") {
660 passes::DefaultPassOption::None
661 } else if matches.opt_present("document-private-items") {
662 passes::DefaultPassOption::Private
664 passes::DefaultPassOption::Default
667 let manual_passes = matches.opt_strs("passes");
668 let plugins = matches.opt_strs("plugins");
670 // First, parse the crate and extract all relevant information.
671 let mut paths = SearchPaths::new();
672 for s in &matches.opt_strs("L") {
673 paths.add_path(s, ErrorOutputType::default());
675 let mut cfgs = matches.opt_strs("cfg");
676 cfgs.push("rustdoc".to_string());
677 let triple = matches.opt_str("target").map(|target| {
678 if target.ends_with(".json") {
679 TargetTriple::TargetPath(PathBuf::from(target))
681 TargetTriple::TargetTriple(target)
684 let maybe_sysroot = matches.opt_str("sysroot").map(PathBuf::from);
685 let crate_name = matches.opt_str("crate-name");
686 let crate_version = matches.opt_str("crate-version");
687 let plugin_path = matches.opt_str("plugin-path");
689 info!("starting to run rustc");
690 let display_warnings = matches.opt_present("display-warnings");
692 let force_unstable_if_unmarked = matches.opt_strs("Z").iter().any(|x| {
693 *x == "force-unstable-if-unmarked"
696 let (lint_opts, describe_lints, lint_cap) = get_cmd_lint_options(matches, error_format);
698 let (tx, rx) = channel();
700 let result = rustc_driver::monitor(move || syntax::with_globals(move || {
701 use rustc::session::config::Input;
703 let (mut krate, renderinfo, passes) =
704 core::run_core(paths, cfgs, externs, Input::File(cratefile), triple, maybe_sysroot,
705 display_warnings, crate_name.clone(),
706 force_unstable_if_unmarked, edition, cg, error_format,
707 lint_opts, lint_cap, describe_lints, manual_passes, default_passes);
709 info!("finished with rustc");
711 if let Some(name) = crate_name {
715 krate.version = crate_version;
717 if !plugins.is_empty() {
718 eprintln!("WARNING: --plugins no longer functions; see CVE-2018-1000622");
721 if !plugin_path.is_none() {
722 eprintln!("WARNING: --plugin-path no longer functions; see CVE-2018-1000622");
725 info!("Executing passes");
727 for pass in &passes {
728 // determine if we know about this pass
729 let pass = match passes::find_pass(pass) {
730 Some(pass) => if let Some(pass) = pass.late_fn() {
733 // not a late pass, but still valid so don't report the error
737 error!("unknown pass {}, skipping", *pass);
747 tx.send(f(Output { krate: krate, renderinfo: renderinfo, passes: passes })).unwrap();
751 Ok(()) => rx.recv().unwrap(),
752 Err(_) => panic::resume_unwind(Box::new(errors::FatalErrorMarker)),
756 /// Prints deprecation warnings for deprecated options
757 fn check_deprecated_options(matches: &getopts::Matches, diag: &errors::Handler) {
758 let deprecated_flags = [
765 for flag in deprecated_flags.into_iter() {
766 if matches.opt_present(flag) {
767 let mut err = diag.struct_warn(&format!("the '{}' flag is considered deprecated",
769 err.warn("please see https://github.com/rust-lang/rust/issues/44136");
771 if *flag == "no-defaults" {
772 err.help("you may want to use --document-private-items");