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 #![crate_name = "rustdoc"]
12 #![unstable(feature = "rustdoc", issue = "27812")]
13 #![crate_type = "dylib"]
14 #![crate_type = "rlib"]
15 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
16 html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
17 html_root_url = "https://doc.rust-lang.org/nightly/",
18 html_playground_url = "https://play.rust-lang.org/")]
19 #![cfg_attr(not(stage0), deny(warnings))]
21 #![feature(box_patterns)]
22 #![feature(box_syntax)]
23 #![feature(dynamic_lib)]
26 #![feature(rustc_private)]
27 #![feature(set_stdio)]
28 #![feature(slice_patterns)]
29 #![feature(staged_api)]
30 #![feature(std_panic)]
38 extern crate rustc_trans;
39 extern crate rustc_driver;
40 extern crate rustc_resolve;
41 extern crate rustc_lint;
42 extern crate rustc_back;
43 extern crate rustc_front;
44 extern crate rustc_metadata;
45 extern crate serialize;
47 extern crate test as testing;
48 extern crate rustc_unicode;
49 #[macro_use] extern crate log;
51 extern crate serialize as rustc_serialize; // used by deriving
53 use std::cell::RefCell;
54 use std::collections::HashMap;
55 use std::default::Default;
58 use std::io::{self, Read, Write};
59 use std::path::PathBuf;
62 use std::sync::mpsc::channel;
64 use externalfiles::ExternalHtml;
65 use serialize::Decodable;
66 use serialize::json::{self, Json};
67 use rustc::session::search_paths::SearchPaths;
68 use rustc::session::config::ErrorOutputType;
70 // reexported from `clean` so it can be easily updated with the mod itself
71 pub use clean::SCHEMA_VERSION;
74 pub mod externalfiles;
97 type Pass = (&'static str, // name
98 fn(clean::Crate) -> plugins::PluginResult, // fn
99 &'static str); // description
101 const PASSES: &'static [Pass] = &[
102 ("strip-hidden", passes::strip_hidden,
103 "strips all doc(hidden) items from the output"),
104 ("unindent-comments", passes::unindent_comments,
105 "removes excess indentation on comments in order for markdown to like it"),
106 ("collapse-docs", passes::collapse_docs,
107 "concatenates all document attributes into one document attribute"),
108 ("strip-private", passes::strip_private,
109 "strips all private items from a crate which cannot be seen externally"),
112 const DEFAULT_PASSES: &'static [&'static str] = &[
119 thread_local!(pub static ANALYSISKEY: Rc<RefCell<Option<core::CrateAnalysis>>> = {
120 Rc::new(RefCell::new(None))
125 json_plugins: Vec<plugins::PluginJson>,
130 const STACK_SIZE: usize = 32000000; // 32MB
131 let res = std::thread::Builder::new().stack_size(STACK_SIZE).spawn(move || {
132 let s = env::args().collect::<Vec<_>>();
134 }).unwrap().join().unwrap_or(101);
135 process::exit(res as i32);
138 pub fn opts() -> Vec<getopts::OptGroup> {
141 optflag("h", "help", "show this help message"),
142 optflag("V", "version", "print rustdoc's version"),
143 optflag("v", "verbose", "use verbose output"),
144 optopt("r", "input-format", "the input type of the specified file",
146 optopt("w", "output-format", "the output type to write",
148 optopt("o", "output", "where to place the output", "PATH"),
149 optopt("", "crate-name", "specify the name of this crate", "NAME"),
150 optmulti("L", "library-path", "directory to add to crate search path",
152 optmulti("", "cfg", "pass a --cfg to rustc", ""),
153 optmulti("", "extern", "pass an --extern to rustc", "NAME=PATH"),
154 optmulti("", "plugin-path", "directory to load plugins from", "DIR"),
155 optmulti("", "passes", "list of passes to also run, you might want \
156 to pass it multiple times; a value of `list` \
157 will print available passes",
159 optmulti("", "plugins", "space separated list of plugins to also load",
161 optflag("", "no-defaults", "don't run the default passes"),
162 optflag("", "test", "run code examples as tests"),
163 optmulti("", "test-args", "arguments to pass to the test runner",
165 optopt("", "target", "target triple to document", "TRIPLE"),
166 optmulti("", "markdown-css", "CSS files to include via <link> in a rendered Markdown file",
168 optmulti("", "html-in-header",
169 "files to include inline in the <head> section of a rendered Markdown file \
170 or generated documentation",
172 optmulti("", "html-before-content",
173 "files to include inline between <body> and the content of a rendered \
174 Markdown file or generated documentation",
176 optmulti("", "html-after-content",
177 "files to include inline between the content and </body> of a rendered \
178 Markdown file or generated documentation",
180 optopt("", "markdown-playground-url",
181 "URL to send code snippets to", "URL"),
182 optflag("", "markdown-no-toc", "don't include table of contents")
186 pub fn usage(argv0: &str) {
188 getopts::usage(&format!("{} [options] <input>", argv0),
192 pub fn main_args(args: &[String]) -> isize {
193 let matches = match getopts::getopts(&args[1..], &opts()) {
200 if matches.opt_present("h") || matches.opt_present("help") {
203 } else if matches.opt_present("version") {
204 rustc_driver::version("rustdoc", &matches);
208 if matches.opt_strs("passes") == ["list"] {
209 println!("Available passes for running rustdoc:");
210 for &(name, _, description) in PASSES {
211 println!("{:>20} - {}", name, description);
213 println!("\nDefault passes for rustdoc:");
214 for &name in DEFAULT_PASSES {
215 println!("{:>20}", name);
220 if matches.free.is_empty() {
221 println!("expected an input file to act on");
223 } if matches.free.len() > 1 {
224 println!("only one input file may be specified");
227 let input = &matches.free[0];
229 let mut libs = SearchPaths::new();
230 for s in &matches.opt_strs("L") {
231 libs.add_path(s, ErrorOutputType::default());
233 let externs = match parse_externs(&matches) {
241 let test_args = matches.opt_strs("test-args");
242 let test_args: Vec<String> = test_args.iter()
243 .flat_map(|s| s.split_whitespace())
244 .map(|s| s.to_string())
247 let should_test = matches.opt_present("test");
248 let markdown_input = input.ends_with(".md") || input.ends_with(".markdown");
250 let output = matches.opt_str("o").map(|s| PathBuf::from(&s));
251 let cfgs = matches.opt_strs("cfg");
253 let external_html = match ExternalHtml::load(
254 &matches.opt_strs("html-in-header"),
255 &matches.opt_strs("html-before-content"),
256 &matches.opt_strs("html-after-content")) {
260 let crate_name = matches.opt_str("crate-name");
262 match (should_test, markdown_input) {
264 return markdown::test(input, cfgs, libs, externs, test_args)
267 return test::run(input, cfgs, libs, externs, test_args, crate_name)
269 (false, true) => return markdown::render(input,
270 output.unwrap_or(PathBuf::from("doc")),
271 &matches, &external_html,
272 !matches.opt_present("markdown-no-toc")),
275 let out = match acquire_input(input, externs, &matches) {
278 println!("input error: {}", s);
282 let Output { krate, json_plugins, passes, } = out;
283 info!("going to format");
284 match matches.opt_str("w").as_ref().map(|s| &**s) {
285 Some("html") | None => {
286 match html::render::run(krate, &external_html,
287 output.unwrap_or(PathBuf::from("doc")),
288 passes.into_iter().collect()) {
290 Err(e) => panic!("failed to generate documentation: {}", e),
294 match json_output(krate, json_plugins,
295 output.unwrap_or(PathBuf::from("doc.json"))) {
297 Err(e) => panic!("failed to write json: {}", e),
301 println!("unknown output format: {}", s);
309 /// Looks inside the command line arguments to extract the relevant input format
310 /// and files and then generates the necessary rustdoc output for formatting.
311 fn acquire_input(input: &str,
312 externs: core::Externs,
313 matches: &getopts::Matches) -> Result<Output, String> {
314 match matches.opt_str("r").as_ref().map(|s| &**s) {
315 Some("rust") => Ok(rust_input(input, externs, matches)),
316 Some("json") => json_input(input),
317 Some(s) => Err(format!("unknown input format: {}", s)),
319 if input.ends_with(".json") {
322 Ok(rust_input(input, externs, matches))
328 /// Extracts `--extern CRATE=PATH` arguments from `matches` and
329 /// returns a `HashMap` mapping crate names to their paths or else an
331 fn parse_externs(matches: &getopts::Matches) -> Result<core::Externs, String> {
332 let mut externs = HashMap::new();
333 for arg in &matches.opt_strs("extern") {
334 let mut parts = arg.splitn(2, '=');
335 let name = match parts.next() {
338 return Err("--extern value must not be empty".to_string());
341 let location = match parts.next() {
344 return Err("--extern value must be of the format `foo=bar`".to_string());
347 let name = name.to_string();
348 externs.entry(name).or_insert(vec![]).push(location.to_string());
353 /// Interprets the input file as a rust source file, passing it through the
354 /// compiler all the way through the analysis passes. The rustdoc output is then
355 /// generated from the cleaned AST of the crate.
357 /// This form of input will run all of the plug/cleaning passes
358 fn rust_input(cratefile: &str, externs: core::Externs, matches: &getopts::Matches) -> Output {
359 let mut default_passes = !matches.opt_present("no-defaults");
360 let mut passes = matches.opt_strs("passes");
361 let mut plugins = matches.opt_strs("plugins");
363 // First, parse the crate and extract all relevant information.
364 let mut paths = SearchPaths::new();
365 for s in &matches.opt_strs("L") {
366 paths.add_path(s, ErrorOutputType::default());
368 let cfgs = matches.opt_strs("cfg");
369 let triple = matches.opt_str("target");
371 let cr = PathBuf::from(cratefile);
372 info!("starting to run rustc");
374 let (tx, rx) = channel();
375 rustc_driver::monitor(move || {
376 use rustc::session::config::Input;
378 tx.send(core::run_core(paths, cfgs, externs, Input::File(cr),
381 let (mut krate, analysis) = rx.recv().unwrap();
382 info!("finished with rustc");
383 let mut analysis = Some(analysis);
384 ANALYSISKEY.with(|s| {
385 *s.borrow_mut() = analysis.take();
388 match matches.opt_str("crate-name") {
389 Some(name) => krate.name = name,
393 // Process all of the crate attributes, extracting plugin metadata along
394 // with the passes which we are supposed to run.
395 match krate.module.as_ref().unwrap().doc_list() {
397 for inner in nested {
400 if "no_default_passes" == *x => {
401 default_passes = false;
403 clean::NameValue(ref x, ref value)
404 if "passes" == *x => {
405 for pass in value.split_whitespace() {
406 passes.push(pass.to_string());
409 clean::NameValue(ref x, ref value)
410 if "plugins" == *x => {
411 for p in value.split_whitespace() {
412 plugins.push(p.to_string());
422 for name in DEFAULT_PASSES.iter().rev() {
423 passes.insert(0, name.to_string());
427 // Load all plugins/passes into a PluginManager
428 let path = matches.opt_str("plugin-path")
429 .unwrap_or("/tmp/rustdoc/plugins".to_string());
430 let mut pm = plugins::PluginManager::new(PathBuf::from(path));
431 for pass in &passes {
432 let plugin = match PASSES.iter()
433 .position(|&(p, _, _)| {
436 Some(i) => PASSES[i].1,
438 error!("unknown pass {}, skipping", *pass);
442 pm.add_plugin(plugin);
444 info!("loading plugins...");
445 for pname in plugins {
446 pm.load_plugin(pname);
450 info!("Executing passes/plugins");
451 let (krate, json) = pm.run_plugins(krate);
452 return Output { krate: krate, json_plugins: json, passes: passes, };
455 /// This input format purely deserializes the json output file. No passes are
456 /// run over the deserialized output.
457 fn json_input(input: &str) -> Result<Output, String> {
458 let mut bytes = Vec::new();
459 match File::open(input).and_then(|mut f| f.read_to_end(&mut bytes)) {
461 Err(e) => return Err(format!("couldn't open {}: {}", input, e)),
463 match json::from_reader(&mut &bytes[..]) {
464 Err(s) => Err(format!("{:?}", s)),
465 Ok(Json::Object(obj)) => {
467 // Make sure the schema is what we expect
468 match obj.remove(&"schema".to_string()) {
469 Some(Json::String(version)) => {
470 if version != SCHEMA_VERSION {
472 "sorry, but I only understand version {}",
476 Some(..) => return Err("malformed json".to_string()),
477 None => return Err("expected a schema version".to_string()),
479 let krate = match obj.remove(&"crate".to_string()) {
481 let mut d = json::Decoder::new(json);
482 Decodable::decode(&mut d).unwrap()
484 None => return Err("malformed json".to_string()),
486 // FIXME: this should read from the "plugins" field, but currently
487 // Json doesn't implement decodable...
488 let plugin_output = Vec::new();
489 Ok(Output { krate: krate, json_plugins: plugin_output, passes: Vec::new(), })
492 Err("malformed json input: expected an object at the \
498 /// Outputs the crate/plugin json as a giant json blob at the specified
500 fn json_output(krate: clean::Crate, res: Vec<plugins::PluginJson> ,
501 dst: PathBuf) -> io::Result<()> {
503 // "schema": version,
504 // "crate": { parsed crate ... },
505 // "plugins": { output of plugins ... }
507 let mut json = std::collections::BTreeMap::new();
508 json.insert("schema".to_string(), Json::String(SCHEMA_VERSION.to_string()));
509 let plugins_json = res.into_iter()
513 Some((string, json)) => {
514 Some((string.to_string(), json))
519 // FIXME #8335: yuck, Rust -> str -> JSON round trip! No way to .encode
520 // straight to the Rust JSON representation.
521 let crate_json_str = format!("{}", json::as_json(&krate));
522 let crate_json = match json::from_str(&crate_json_str) {
524 Err(e) => panic!("Rust generated JSON is invalid: {:?}", e)
527 json.insert("crate".to_string(), crate_json);
528 json.insert("plugins".to_string(), Json::Object(plugins_json));
530 let mut file = try!(File::create(&dst));
531 write!(&mut file, "{}", Json::Object(json))