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/")]
17 #![feature(rustc_private)]
18 #![feature(box_patterns)]
19 #![feature(box_syntax)]
21 #![feature(set_stdio)]
22 #![feature(slice_patterns)]
25 #![feature(vec_remove_item)]
26 #![feature(ascii_ctype)]
30 extern crate env_logger;
31 extern crate html_diff;
34 extern crate rustc_data_structures;
35 extern crate rustc_const_math;
36 extern crate rustc_trans;
37 extern crate rustc_driver;
38 extern crate rustc_resolve;
39 extern crate rustc_lint;
40 extern crate rustc_back;
41 extern crate rustc_metadata;
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 extern crate std_unicode;
48 #[macro_use] extern crate log;
49 extern crate rustc_errors as errors;
50 extern crate pulldown_cmark;
52 extern crate serialize as rustc_serialize; // used by deriving
54 use std::collections::{BTreeMap, BTreeSet};
55 use std::default::Default;
57 use std::fmt::Display;
60 use std::path::PathBuf;
62 use std::sync::mpsc::channel;
64 use externalfiles::ExternalHtml;
65 use rustc::session::search_paths::SearchPaths;
66 use rustc::session::config::{ErrorOutputType, RustcOptGroup, nightly_options,
70 pub mod externalfiles;
93 use clean::AttributesExt;
95 use html::markdown::RenderType;
99 renderinfo: html::render::RenderInfo,
104 const STACK_SIZE: usize = 32_000_000; // 32MB
105 env_logger::init().unwrap();
106 let res = std::thread::Builder::new().stack_size(STACK_SIZE).spawn(move || {
107 get_args().map(|args| main_args(&args)).unwrap_or(1)
108 }).unwrap().join().unwrap_or(101);
109 process::exit(res as i32);
112 fn get_args() -> Option<Vec<String>> {
113 env::args_os().enumerate()
114 .map(|(i, arg)| arg.into_string().map_err(|arg| {
115 print_error(format!("Argument {} is not valid Unicode: {:?}", i, arg));
120 fn stable<F>(name: &'static str, f: F) -> RustcOptGroup
121 where F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static
123 RustcOptGroup::stable(name, f)
126 fn unstable<F>(name: &'static str, f: F) -> RustcOptGroup
127 where F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static
129 RustcOptGroup::unstable(name, f)
132 pub fn opts() -> Vec<RustcOptGroup> {
134 stable("h", |o| o.optflag("h", "help", "show this help message")),
135 stable("V", |o| o.optflag("V", "version", "print rustdoc's version")),
136 stable("v", |o| o.optflag("v", "verbose", "use verbose output")),
138 o.optopt("r", "input-format", "the input type of the specified file",
142 o.optopt("w", "output-format", "the output type to write", "[html]")
144 stable("o", |o| o.optopt("o", "output", "where to place the output", "PATH")),
145 stable("crate-name", |o| {
146 o.optopt("", "crate-name", "specify the name of this crate", "NAME")
149 o.optmulti("L", "library-path", "directory to add to crate search path",
152 stable("cfg", |o| o.optmulti("", "cfg", "pass a --cfg to rustc", "")),
153 stable("extern", |o| {
154 o.optmulti("", "extern", "pass an --extern to rustc", "NAME=PATH")
156 stable("plugin-path", |o| {
157 o.optmulti("", "plugin-path", "directory to load plugins from", "DIR")
159 stable("passes", |o| {
160 o.optmulti("", "passes",
161 "list of passes to also run, you might want \
162 to pass it multiple times; a value of `list` \
163 will print available passes",
166 stable("plugins", |o| {
167 o.optmulti("", "plugins", "space separated list of plugins to also load",
170 stable("no-default", |o| {
171 o.optflag("", "no-defaults", "don't run the default passes")
173 stable("document-private-items", |o| {
174 o.optflag("", "document-private-items", "document private items")
176 stable("test", |o| o.optflag("", "test", "run code examples as tests")),
177 stable("test-args", |o| {
178 o.optmulti("", "test-args", "arguments to pass to the test runner",
181 stable("target", |o| o.optopt("", "target", "target triple to document", "TRIPLE")),
182 stable("markdown-css", |o| {
183 o.optmulti("", "markdown-css",
184 "CSS files to include via <link> in a rendered Markdown file",
187 stable("html-in-header", |o| {
188 o.optmulti("", "html-in-header",
189 "files to include inline in the <head> section of a rendered Markdown file \
190 or generated documentation",
193 stable("html-before-content", |o| {
194 o.optmulti("", "html-before-content",
195 "files to include inline between <body> and the content of a rendered \
196 Markdown file or generated documentation",
199 stable("html-after-content", |o| {
200 o.optmulti("", "html-after-content",
201 "files to include inline between the content and </body> of a rendered \
202 Markdown file or generated documentation",
205 unstable("markdown-before-content", |o| {
206 o.optmulti("", "markdown-before-content",
207 "files to include inline between <body> and the content of a rendered \
208 Markdown file or generated documentation",
211 unstable("markdown-after-content", |o| {
212 o.optmulti("", "markdown-after-content",
213 "files to include inline between the content and </body> of a rendered \
214 Markdown file or generated documentation",
217 stable("markdown-playground-url", |o| {
218 o.optopt("", "markdown-playground-url",
219 "URL to send code snippets to", "URL")
221 stable("markdown-no-toc", |o| {
222 o.optflag("", "markdown-no-toc", "don't include table of contents")
225 o.optopt("e", "extend-css",
226 "To add some CSS rules with a given file to generate doc with your \
227 own theme. However, your theme might break if the rustdoc's generated HTML \
228 changes, so be careful!", "PATH")
232 "internal and debugging options (only on nightly build)", "FLAG")
234 stable("sysroot", |o| {
235 o.optopt("", "sysroot", "Override the system root", "PATH")
237 unstable("playground-url", |o| {
238 o.optopt("", "playground-url",
239 "URL to send code snippets to, may be reset by --markdown-playground-url \
240 or `#![doc(html_playground_url=...)]`",
243 unstable("enable-commonmark", |o| {
244 o.optflag("", "enable-commonmark", "to enable commonmark doc rendering/testing")
246 unstable("display-warnings", |o| {
247 o.optflag("", "display-warnings", "to print code warnings when testing doc")
249 unstable("crate-version", |o| {
250 o.optopt("", "crate-version", "crate version to print into documentation", "VERSION")
252 unstable("linker", |o| {
253 o.optopt("", "linker", "linker used for building executable test code", "PATH")
258 pub fn usage(argv0: &str) {
259 let mut options = getopts::Options::new();
260 for option in opts() {
261 (option.apply)(&mut options);
263 println!("{}", options.usage(&format!("{} [options] <input>", argv0)));
266 pub fn main_args(args: &[String]) -> isize {
267 let mut options = getopts::Options::new();
268 for option in opts() {
269 (option.apply)(&mut options);
271 let matches = match options.parse(&args[1..]) {
278 // Check for unstable options.
279 nightly_options::check_nightly_options(&matches, &opts());
281 // check for deprecated options
282 check_deprecated_options(&matches);
284 if matches.opt_present("h") || matches.opt_present("help") {
287 } else if matches.opt_present("version") {
288 rustc_driver::version("rustdoc", &matches);
292 if matches.opt_strs("passes") == ["list"] {
293 println!("Available passes for running rustdoc:");
294 for &(name, _, description) in passes::PASSES {
295 println!("{:>20} - {}", name, description);
297 println!("\nDefault passes for rustdoc:");
298 for &name in passes::DEFAULT_PASSES {
299 println!("{:>20}", name);
304 if matches.free.is_empty() {
305 print_error("missing file operand");
308 if matches.free.len() > 1 {
309 print_error("too many file operands");
312 let input = &matches.free[0];
314 let mut libs = SearchPaths::new();
315 for s in &matches.opt_strs("L") {
316 libs.add_path(s, ErrorOutputType::default());
318 let externs = match parse_externs(&matches) {
326 let test_args = matches.opt_strs("test-args");
327 let test_args: Vec<String> = test_args.iter()
328 .flat_map(|s| s.split_whitespace())
329 .map(|s| s.to_string())
332 let should_test = matches.opt_present("test");
333 let markdown_input = input.ends_with(".md") || input.ends_with(".markdown");
335 let output = matches.opt_str("o").map(|s| PathBuf::from(&s));
336 let css_file_extension = matches.opt_str("e").map(|s| PathBuf::from(&s));
337 let cfgs = matches.opt_strs("cfg");
339 let render_type = if matches.opt_present("enable-commonmark") {
345 if let Some(ref p) = css_file_extension {
349 "rustdoc: option --extend-css argument must be a file."
355 let external_html = match ExternalHtml::load(
356 &matches.opt_strs("html-in-header"),
357 &matches.opt_strs("html-before-content"),
358 &matches.opt_strs("html-after-content"),
359 &matches.opt_strs("markdown-before-content"),
360 &matches.opt_strs("markdown-after-content"),
365 let crate_name = matches.opt_str("crate-name");
366 let playground_url = matches.opt_str("playground-url");
367 let maybe_sysroot = matches.opt_str("sysroot").map(PathBuf::from);
368 let display_warnings = matches.opt_present("display-warnings");
369 let linker = matches.opt_str("linker");
371 match (should_test, markdown_input) {
373 return markdown::test(input, cfgs, libs, externs, test_args, maybe_sysroot, render_type,
374 display_warnings, linker)
377 return test::run(input, cfgs, libs, externs, test_args, crate_name, maybe_sysroot,
378 render_type, display_warnings, linker)
380 (false, true) => return markdown::render(input,
381 output.unwrap_or(PathBuf::from("doc")),
382 &matches, &external_html,
383 !matches.opt_present("markdown-no-toc"),
388 let output_format = matches.opt_str("w");
389 let res = acquire_input(input, externs, &matches, move |out| {
390 let Output { krate, passes, renderinfo } = out;
391 info!("going to format");
392 match output_format.as_ref().map(|s| &**s) {
393 Some("html") | None => {
394 html::render::run(krate, &external_html, playground_url,
395 output.unwrap_or(PathBuf::from("doc")),
396 passes.into_iter().collect(),
400 .expect("failed to generate documentation");
404 print_error(format!("unknown output format: {}", s));
409 res.unwrap_or_else(|s| {
410 print_error(format!("input error: {}", s));
415 /// Prints an uniformized error message on the standard error output
416 fn print_error<T>(error_message: T) where T: Display {
419 "rustdoc: {}\nTry 'rustdoc --help' for more information.",
424 /// Looks inside the command line arguments to extract the relevant input format
425 /// and files and then generates the necessary rustdoc output for formatting.
426 fn acquire_input<R, F>(input: &str,
428 matches: &getopts::Matches,
431 where R: 'static + Send, F: 'static + Send + FnOnce(Output) -> R {
432 match matches.opt_str("r").as_ref().map(|s| &**s) {
433 Some("rust") => Ok(rust_input(input, externs, matches, f)),
434 Some(s) => Err(format!("unknown input format: {}", s)),
435 None => Ok(rust_input(input, externs, matches, f))
439 /// Extracts `--extern CRATE=PATH` arguments from `matches` and
440 /// returns a map mapping crate names to their paths or else an
442 fn parse_externs(matches: &getopts::Matches) -> Result<Externs, String> {
443 let mut externs = BTreeMap::new();
444 for arg in &matches.opt_strs("extern") {
445 let mut parts = arg.splitn(2, '=');
446 let name = parts.next().ok_or("--extern value must not be empty".to_string())?;
447 let location = parts.next()
448 .ok_or("--extern value must be of the format `foo=bar`"
450 let name = name.to_string();
451 externs.entry(name).or_insert_with(BTreeSet::new).insert(location.to_string());
453 Ok(Externs::new(externs))
456 /// Interprets the input file as a rust source file, passing it through the
457 /// compiler all the way through the analysis passes. The rustdoc output is then
458 /// generated from the cleaned AST of the crate.
460 /// This form of input will run all of the plug/cleaning passes
461 fn rust_input<R, F>(cratefile: &str, externs: Externs, matches: &getopts::Matches, f: F) -> R
462 where R: 'static + Send, F: 'static + Send + FnOnce(Output) -> R {
463 let mut default_passes = !matches.opt_present("no-defaults");
464 let mut passes = matches.opt_strs("passes");
465 let mut plugins = matches.opt_strs("plugins");
467 // We hardcode in the passes here, as this is a new flag and we
468 // are generally deprecating passes.
469 if matches.opt_present("document-private-items") {
470 default_passes = false;
473 String::from("strip-hidden"),
474 String::from("collapse-docs"),
475 String::from("unindent-comments"),
479 // First, parse the crate and extract all relevant information.
480 let mut paths = SearchPaths::new();
481 for s in &matches.opt_strs("L") {
482 paths.add_path(s, ErrorOutputType::default());
484 let cfgs = matches.opt_strs("cfg");
485 let triple = matches.opt_str("target");
486 let maybe_sysroot = matches.opt_str("sysroot").map(PathBuf::from);
487 let crate_name = matches.opt_str("crate-name");
488 let crate_version = matches.opt_str("crate-version");
489 let plugin_path = matches.opt_str("plugin-path");
491 let cr = PathBuf::from(cratefile);
492 info!("starting to run rustc");
493 let display_warnings = matches.opt_present("display-warnings");
495 let force_unstable_if_unmarked = matches.opt_strs("Z").iter().any(|x| {
496 *x == "force-unstable-if-unmarked"
499 let (tx, rx) = channel();
500 rustc_driver::monitor(move || {
501 use rustc::session::config::Input;
503 let (mut krate, renderinfo) =
504 core::run_core(paths, cfgs, externs, Input::File(cr), triple, maybe_sysroot,
505 display_warnings, force_unstable_if_unmarked);
507 info!("finished with rustc");
509 if let Some(name) = crate_name {
513 krate.version = crate_version;
515 // Process all of the crate attributes, extracting plugin metadata along
516 // with the passes which we are supposed to run.
517 for attr in krate.module.as_ref().unwrap().attrs.lists("doc") {
518 let name = attr.name().map(|s| s.as_str());
519 let name = name.as_ref().map(|s| &s[..]);
521 if name == Some("no_default_passes") {
522 default_passes = false;
524 } else if let Some(value) = attr.value_str() {
525 let sink = match name {
526 Some("passes") => &mut passes,
527 Some("plugins") => &mut plugins,
530 for p in value.as_str().split_whitespace() {
531 sink.push(p.to_string());
537 for name in passes::DEFAULT_PASSES.iter().rev() {
538 passes.insert(0, name.to_string());
542 // Load all plugins/passes into a PluginManager
543 let path = plugin_path.unwrap_or("/tmp/rustdoc/plugins".to_string());
544 let mut pm = plugins::PluginManager::new(PathBuf::from(path));
545 for pass in &passes {
546 let plugin = match passes::PASSES.iter()
547 .position(|&(p, ..)| {
550 Some(i) => passes::PASSES[i].1,
552 error!("unknown pass {}, skipping", *pass);
556 pm.add_plugin(plugin);
558 info!("loading plugins...");
559 for pname in plugins {
560 pm.load_plugin(pname);
564 info!("Executing passes/plugins");
565 let krate = pm.run_plugins(krate);
567 tx.send(f(Output { krate: krate, renderinfo: renderinfo, passes: passes })).unwrap();
572 /// Prints deprecation warnings for deprecated options
573 fn check_deprecated_options(matches: &getopts::Matches) {
574 let deprecated_flags = [
583 for flag in deprecated_flags.into_iter() {
584 if matches.opt_present(flag) {
585 eprintln!("WARNING: the '{}' flag is considered deprecated", flag);
586 eprintln!("WARNING: please see https://github.com/rust-lang/rust/issues/44136");
590 if matches.opt_present("no-defaults") {
591 eprintln!("WARNING: (you may want to use --document-private-items)");