713 lines
26 KiB
Rust
713 lines
26 KiB
Rust
#![doc(
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html_root_url = "https://doc.rust-lang.org/nightly/",
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html_playground_url = "https://play.rust-lang.org/"
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)]
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#![feature(rustc_private)]
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#![feature(array_methods)]
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#![feature(box_patterns)]
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#![feature(box_syntax)]
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#![feature(in_band_lifetimes)]
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#![feature(nll)]
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#![feature(or_patterns)]
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#![feature(test)]
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#![feature(crate_visibility_modifier)]
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#![feature(never_type)]
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#![feature(once_cell)]
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#![feature(type_ascription)]
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#![feature(iter_intersperse)]
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#![recursion_limit = "256"]
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#![deny(rustc::internal)]
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#[macro_use]
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extern crate lazy_static;
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#[macro_use]
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extern crate tracing;
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// N.B. these need `extern crate` even in 2018 edition
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// because they're loaded implicitly from the sysroot.
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// The reason they're loaded from the sysroot is because
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// the rustdoc artifacts aren't stored in rustc's cargo target directory.
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// So if `rustc` was specified in Cargo.toml, this would spuriously rebuild crates.
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//
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// Dependencies listed in Cargo.toml do not need `extern crate`.
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extern crate rustc_ast;
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extern crate rustc_ast_pretty;
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extern crate rustc_attr;
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extern crate rustc_data_structures;
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extern crate rustc_driver;
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extern crate rustc_errors;
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extern crate rustc_expand;
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extern crate rustc_feature;
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extern crate rustc_hir;
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extern crate rustc_hir_pretty;
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extern crate rustc_index;
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extern crate rustc_infer;
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extern crate rustc_interface;
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extern crate rustc_lexer;
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extern crate rustc_lint;
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extern crate rustc_lint_defs;
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extern crate rustc_metadata;
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extern crate rustc_middle;
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extern crate rustc_mir;
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extern crate rustc_parse;
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extern crate rustc_passes;
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extern crate rustc_resolve;
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extern crate rustc_session;
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extern crate rustc_span as rustc_span;
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extern crate rustc_target;
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extern crate rustc_trait_selection;
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extern crate rustc_typeck;
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extern crate test as testing;
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use std::default::Default;
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use std::env;
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use std::process;
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use rustc_driver::abort_on_err;
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use rustc_errors::ErrorReported;
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use rustc_interface::interface;
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use rustc_middle::ty::TyCtxt;
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use rustc_session::config::{make_crate_type_option, ErrorOutputType, RustcOptGroup};
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use rustc_session::getopts;
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use rustc_session::{early_error, early_warn};
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/// A macro to create a FxHashMap.
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///
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/// Example:
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///
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/// ```
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/// let letters = map!{"a" => "b", "c" => "d"};
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/// ```
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///
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/// Trailing commas are allowed.
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/// Commas between elements are required (even if the expression is a block).
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macro_rules! map {
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($( $key: expr => $val: expr ),* $(,)*) => {{
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let mut map = ::rustc_data_structures::fx::FxHashMap::default();
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$( map.insert($key, $val); )*
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map
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}}
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}
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#[macro_use]
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mod externalfiles;
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mod clean;
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mod config;
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mod core;
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mod docfs;
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mod doctree;
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#[macro_use]
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mod error;
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mod doctest;
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mod fold;
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mod formats;
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// used by the error-index generator, so it needs to be public
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pub mod html;
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mod json;
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crate mod lint;
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mod markdown;
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mod passes;
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mod theme;
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mod visit_ast;
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mod visit_lib;
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pub fn main() {
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rustc_driver::set_sigpipe_handler();
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rustc_driver::install_ice_hook();
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// When using CI artifacts (with `download_stage1 = true`), tracing is unconditionally built
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// with `--features=static_max_level_info`, which disables almost all rustdoc logging. To avoid
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// this, compile our own version of `tracing` that logs all levels.
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// NOTE: this compiles both versions of tracing unconditionally, because
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// - The compile time hit is not that bad, especially compared to rustdoc's incremental times, and
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// - Otherwise, there's no warning that logging is being ignored when `download_stage1 = true`.
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// NOTE: The reason this doesn't show double logging when `download_stage1 = false` and
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// `debug_logging = true` is because all rustc logging goes to its version of tracing (the one
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// in the sysroot), and all of rustdoc's logging goes to its version (the one in Cargo.toml).
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init_logging();
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rustc_driver::init_env_logger("RUSTDOC_LOG");
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let exit_code = rustc_driver::catch_with_exit_code(|| match get_args() {
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Some(args) => main_args(&args),
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_ => Err(ErrorReported),
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});
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process::exit(exit_code);
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}
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fn init_logging() {
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use std::io;
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// FIXME remove these and use winapi 0.3 instead
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// Duplicates: bootstrap/compile.rs, librustc_errors/emitter.rs, rustc_driver/lib.rs
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#[cfg(unix)]
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fn stdout_isatty() -> bool {
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extern crate libc;
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unsafe { libc::isatty(libc::STDOUT_FILENO) != 0 }
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}
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#[cfg(windows)]
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fn stdout_isatty() -> bool {
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extern crate winapi;
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use winapi::um::consoleapi::GetConsoleMode;
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use winapi::um::processenv::GetStdHandle;
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use winapi::um::winbase::STD_OUTPUT_HANDLE;
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unsafe {
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let handle = GetStdHandle(STD_OUTPUT_HANDLE);
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let mut out = 0;
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GetConsoleMode(handle, &mut out) != 0
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}
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}
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let color_logs = match std::env::var("RUSTDOC_LOG_COLOR") {
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Ok(value) => match value.as_ref() {
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"always" => true,
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"never" => false,
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"auto" => stdout_isatty(),
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_ => early_error(
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ErrorOutputType::default(),
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&format!(
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"invalid log color value '{}': expected one of always, never, or auto",
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value
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),
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),
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},
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Err(std::env::VarError::NotPresent) => stdout_isatty(),
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Err(std::env::VarError::NotUnicode(_value)) => early_error(
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ErrorOutputType::default(),
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"non-Unicode log color value: expected one of always, never, or auto",
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),
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};
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let filter = tracing_subscriber::EnvFilter::from_env("RUSTDOC_LOG");
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let layer = tracing_tree::HierarchicalLayer::default()
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.with_writer(io::stderr)
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.with_indent_lines(true)
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.with_ansi(color_logs)
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.with_targets(true)
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.with_wraparound(10)
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.with_verbose_exit(true)
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.with_verbose_entry(true)
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.with_indent_amount(2);
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#[cfg(parallel_compiler)]
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let layer = layer.with_thread_ids(true).with_thread_names(true);
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use tracing_subscriber::layer::SubscriberExt;
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let subscriber = tracing_subscriber::Registry::default().with(filter).with(layer);
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tracing::subscriber::set_global_default(subscriber).unwrap();
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}
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fn get_args() -> Option<Vec<String>> {
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env::args_os()
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.enumerate()
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.map(|(i, arg)| {
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arg.into_string()
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.map_err(|arg| {
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early_warn(
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ErrorOutputType::default(),
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&format!("Argument {} is not valid Unicode: {:?}", i, arg),
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);
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})
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.ok()
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})
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.collect()
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}
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fn opts() -> Vec<RustcOptGroup> {
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let stable: fn(_, fn(&mut getopts::Options) -> &mut _) -> _ = RustcOptGroup::stable;
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let unstable: fn(_, fn(&mut getopts::Options) -> &mut _) -> _ = RustcOptGroup::unstable;
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vec![
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stable("h", |o| o.optflag("h", "help", "show this help message")),
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stable("V", |o| o.optflag("V", "version", "print rustdoc's version")),
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stable("v", |o| o.optflag("v", "verbose", "use verbose output")),
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stable("r", |o| {
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o.optopt("r", "input-format", "the input type of the specified file", "[rust]")
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}),
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stable("w", |o| o.optopt("w", "output-format", "the output type to write", "[html]")),
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stable("o", |o| o.optopt("o", "output", "where to place the output", "PATH")),
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stable("crate-name", |o| {
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o.optopt("", "crate-name", "specify the name of this crate", "NAME")
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}),
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make_crate_type_option(),
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stable("L", |o| {
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o.optmulti("L", "library-path", "directory to add to crate search path", "DIR")
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}),
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stable("cfg", |o| o.optmulti("", "cfg", "pass a --cfg to rustc", "")),
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stable("extern", |o| o.optmulti("", "extern", "pass an --extern to rustc", "NAME[=PATH]")),
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unstable("extern-html-root-url", |o| {
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o.optmulti("", "extern-html-root-url", "base URL to use for dependencies", "NAME=URL")
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}),
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stable("plugin-path", |o| o.optmulti("", "plugin-path", "removed", "DIR")),
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stable("C", |o| {
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o.optmulti("C", "codegen", "pass a codegen option to rustc", "OPT[=VALUE]")
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}),
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stable("passes", |o| {
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o.optmulti(
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"",
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"passes",
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"list of passes to also run, you might want to pass it multiple times; a value of \
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`list` will print available passes",
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"PASSES",
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)
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}),
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stable("plugins", |o| o.optmulti("", "plugins", "removed", "PLUGINS")),
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stable("no-default", |o| o.optflag("", "no-defaults", "don't run the default passes")),
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stable("document-private-items", |o| {
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o.optflag("", "document-private-items", "document private items")
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}),
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unstable("document-hidden-items", |o| {
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o.optflag("", "document-hidden-items", "document items that have doc(hidden)")
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}),
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stable("test", |o| o.optflag("", "test", "run code examples as tests")),
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stable("test-args", |o| {
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o.optmulti("", "test-args", "arguments to pass to the test runner", "ARGS")
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}),
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unstable("test-run-directory", |o| {
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o.optopt(
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"",
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"test-run-directory",
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"The working directory in which to run tests",
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"PATH",
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)
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}),
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stable("target", |o| o.optopt("", "target", "target triple to document", "TRIPLE")),
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stable("markdown-css", |o| {
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o.optmulti(
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"",
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"markdown-css",
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"CSS files to include via <link> in a rendered Markdown file",
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"FILES",
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)
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}),
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stable("html-in-header", |o| {
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o.optmulti(
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"",
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"html-in-header",
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"files to include inline in the <head> section of a rendered Markdown file \
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or generated documentation",
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"FILES",
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)
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}),
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stable("html-before-content", |o| {
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o.optmulti(
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"",
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"html-before-content",
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"files to include inline between <body> and the content of a rendered \
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Markdown file or generated documentation",
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"FILES",
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)
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}),
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stable("html-after-content", |o| {
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o.optmulti(
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"",
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"html-after-content",
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"files to include inline between the content and </body> of a rendered \
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Markdown file or generated documentation",
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"FILES",
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)
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}),
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unstable("markdown-before-content", |o| {
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o.optmulti(
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"",
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"markdown-before-content",
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"files to include inline between <body> and the content of a rendered \
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Markdown file or generated documentation",
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"FILES",
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)
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}),
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unstable("markdown-after-content", |o| {
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o.optmulti(
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"",
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"markdown-after-content",
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"files to include inline between the content and </body> of a rendered \
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Markdown file or generated documentation",
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"FILES",
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)
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}),
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stable("markdown-playground-url", |o| {
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o.optopt("", "markdown-playground-url", "URL to send code snippets to", "URL")
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}),
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stable("markdown-no-toc", |o| {
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o.optflag("", "markdown-no-toc", "don't include table of contents")
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}),
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stable("e", |o| {
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o.optopt(
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"e",
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"extend-css",
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"To add some CSS rules with a given file to generate doc with your \
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own theme. However, your theme might break if the rustdoc's generated HTML \
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changes, so be careful!",
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"PATH",
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)
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}),
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unstable("Z", |o| {
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o.optmulti("Z", "", "internal and debugging options (only on nightly build)", "FLAG")
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}),
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stable("sysroot", |o| o.optopt("", "sysroot", "Override the system root", "PATH")),
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unstable("playground-url", |o| {
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o.optopt(
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"",
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"playground-url",
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"URL to send code snippets to, may be reset by --markdown-playground-url \
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or `#![doc(html_playground_url=...)]`",
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"URL",
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)
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}),
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unstable("display-warnings", |o| {
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o.optflag("", "display-warnings", "to print code warnings when testing doc")
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}),
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stable("crate-version", |o| {
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o.optopt("", "crate-version", "crate version to print into documentation", "VERSION")
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}),
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unstable("sort-modules-by-appearance", |o| {
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o.optflag(
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"",
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"sort-modules-by-appearance",
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"sort modules by where they appear in the program, rather than alphabetically",
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)
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}),
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stable("default-theme", |o| {
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o.optopt(
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"",
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"default-theme",
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"Set the default theme. THEME should be the theme name, generally lowercase. \
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If an unknown default theme is specified, the builtin default is used. \
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The set of themes, and the rustdoc built-in default, are not stable.",
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"THEME",
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)
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}),
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unstable("default-setting", |o| {
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o.optmulti(
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"",
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"default-setting",
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"Default value for a rustdoc setting (used when \"rustdoc-SETTING\" is absent \
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from web browser Local Storage). If VALUE is not supplied, \"true\" is used. \
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Supported SETTINGs and VALUEs are not documented and not stable.",
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"SETTING[=VALUE]",
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)
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}),
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stable("theme", |o| {
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o.optmulti(
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"",
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"theme",
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"additional themes which will be added to the generated docs",
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"FILES",
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)
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}),
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stable("check-theme", |o| {
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o.optmulti("", "check-theme", "check if given theme is valid", "FILES")
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}),
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unstable("resource-suffix", |o| {
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o.optopt(
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"",
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"resource-suffix",
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"suffix to add to CSS and JavaScript files, e.g., \"light.css\" will become \
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\"light-suffix.css\"",
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"PATH",
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)
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}),
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stable("edition", |o| {
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o.optopt(
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"",
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"edition",
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"edition to use when compiling rust code (default: 2015)",
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"EDITION",
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)
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}),
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stable("color", |o| {
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o.optopt(
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"",
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"color",
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"Configure coloring of output:
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auto = colorize, if output goes to a tty (default);
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always = always colorize output;
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never = never colorize output",
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"auto|always|never",
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)
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}),
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stable("error-format", |o| {
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o.optopt(
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"",
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"error-format",
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"How errors and other messages are produced",
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"human|json|short",
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)
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}),
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stable("json", |o| {
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o.optopt("", "json", "Configure the structure of JSON diagnostics", "CONFIG")
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}),
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unstable("disable-minification", |o| {
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o.optflag("", "disable-minification", "Disable minification applied on JS files")
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}),
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stable("warn", |o| o.optmulti("W", "warn", "Set lint warnings", "OPT")),
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stable("allow", |o| o.optmulti("A", "allow", "Set lint allowed", "OPT")),
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stable("deny", |o| o.optmulti("D", "deny", "Set lint denied", "OPT")),
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stable("forbid", |o| o.optmulti("F", "forbid", "Set lint forbidden", "OPT")),
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stable("cap-lints", |o| {
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o.optmulti(
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"",
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"cap-lints",
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"Set the most restrictive lint level. \
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More restrictive lints are capped at this \
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level. By default, it is at `forbid` level.",
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"LEVEL",
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)
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}),
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unstable("index-page", |o| {
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o.optopt("", "index-page", "Markdown file to be used as index page", "PATH")
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}),
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unstable("enable-index-page", |o| {
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o.optflag("", "enable-index-page", "To enable generation of the index page")
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}),
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unstable("static-root-path", |o| {
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o.optopt(
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"",
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"static-root-path",
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"Path string to force loading static files from in output pages. \
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If not set, uses combinations of '../' to reach the documentation root.",
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"PATH",
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)
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}),
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unstable("disable-per-crate-search", |o| {
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o.optflag(
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"",
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"disable-per-crate-search",
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"disables generating the crate selector on the search box",
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)
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}),
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unstable("persist-doctests", |o| {
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o.optopt(
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"",
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"persist-doctests",
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"Directory to persist doctest executables into",
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"PATH",
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)
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}),
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unstable("show-coverage", |o| {
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o.optflag(
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"",
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"show-coverage",
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"calculate percentage of public items with documentation",
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)
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}),
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unstable("enable-per-target-ignores", |o| {
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o.optflag(
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"",
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"enable-per-target-ignores",
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|
"parse ignore-foo for ignoring doctests on a per-target basis",
|
|
)
|
|
}),
|
|
unstable("runtool", |o| {
|
|
o.optopt(
|
|
"",
|
|
"runtool",
|
|
"",
|
|
"The tool to run tests with when building for a different target than host",
|
|
)
|
|
}),
|
|
unstable("runtool-arg", |o| {
|
|
o.optmulti(
|
|
"",
|
|
"runtool-arg",
|
|
"",
|
|
"One (of possibly many) arguments to pass to the runtool",
|
|
)
|
|
}),
|
|
unstable("test-builder", |o| {
|
|
o.optopt("", "test-builder", "The rustc-like binary to use as the test builder", "PATH")
|
|
}),
|
|
unstable("check", |o| o.optflag("", "check", "Run rustdoc checks")),
|
|
unstable("generate-redirect-map", |o| {
|
|
o.optflag(
|
|
"",
|
|
"generate-redirect-map",
|
|
"Generate JSON file at the top level instead of generating HTML redirection files",
|
|
)
|
|
}),
|
|
unstable("print", |o| {
|
|
o.optmulti("", "print", "Rustdoc information to print on stdout", "[unversioned-files]")
|
|
}),
|
|
]
|
|
}
|
|
|
|
fn usage(argv0: &str) {
|
|
let mut options = getopts::Options::new();
|
|
for option in opts() {
|
|
(option.apply)(&mut options);
|
|
}
|
|
println!("{}", options.usage(&format!("{} [options] <input>", argv0)));
|
|
println!(" @path Read newline separated options from `path`\n");
|
|
println!("More information available at https://doc.rust-lang.org/rustdoc/what-is-rustdoc.html")
|
|
}
|
|
|
|
/// A result type used by several functions under `main()`.
|
|
type MainResult = Result<(), ErrorReported>;
|
|
|
|
fn main_args(at_args: &[String]) -> MainResult {
|
|
let args = rustc_driver::args::arg_expand_all(at_args);
|
|
|
|
let mut options = getopts::Options::new();
|
|
for option in opts() {
|
|
(option.apply)(&mut options);
|
|
}
|
|
let matches = match options.parse(&args[1..]) {
|
|
Ok(m) => m,
|
|
Err(err) => {
|
|
early_error(ErrorOutputType::default(), &err.to_string());
|
|
}
|
|
};
|
|
|
|
// Note that we discard any distinction between different non-zero exit
|
|
// codes from `from_matches` here.
|
|
let options = match config::Options::from_matches(&matches) {
|
|
Ok(opts) => opts,
|
|
Err(code) => return if code == 0 { Ok(()) } else { Err(ErrorReported) },
|
|
};
|
|
rustc_interface::util::setup_callbacks_and_run_in_thread_pool_with_globals(
|
|
options.edition,
|
|
1, // this runs single-threaded, even in a parallel compiler
|
|
&None,
|
|
move || main_options(options),
|
|
)
|
|
}
|
|
|
|
fn wrap_return(diag: &rustc_errors::Handler, res: Result<(), String>) -> MainResult {
|
|
match res {
|
|
Ok(()) => Ok(()),
|
|
Err(err) => {
|
|
diag.struct_err(&err).emit();
|
|
Err(ErrorReported)
|
|
}
|
|
}
|
|
}
|
|
|
|
fn run_renderer<'tcx, T: formats::FormatRenderer<'tcx>>(
|
|
krate: clean::Crate,
|
|
renderopts: config::RenderOptions,
|
|
cache: formats::cache::Cache,
|
|
diag: &rustc_errors::Handler,
|
|
edition: rustc_span::edition::Edition,
|
|
tcx: TyCtxt<'tcx>,
|
|
) -> MainResult {
|
|
match formats::run_format::<T>(krate, renderopts, cache, &diag, edition, tcx) {
|
|
Ok(_) => Ok(()),
|
|
Err(e) => {
|
|
let mut msg = diag.struct_err(&format!("couldn't generate documentation: {}", e.error));
|
|
let file = e.file.display().to_string();
|
|
if file.is_empty() {
|
|
msg.emit()
|
|
} else {
|
|
msg.note(&format!("failed to create or modify \"{}\"", file)).emit()
|
|
}
|
|
Err(ErrorReported)
|
|
}
|
|
}
|
|
}
|
|
|
|
fn main_options(options: config::Options) -> MainResult {
|
|
let diag = core::new_handler(options.error_format, None, &options.debugging_opts);
|
|
|
|
match (options.should_test, options.markdown_input()) {
|
|
(true, true) => return wrap_return(&diag, markdown::test(options)),
|
|
(true, false) => return doctest::run(options),
|
|
(false, true) => {
|
|
return wrap_return(
|
|
&diag,
|
|
markdown::render(&options.input, options.render_options, options.edition),
|
|
);
|
|
}
|
|
(false, false) => {}
|
|
}
|
|
|
|
// need to move these items separately because we lose them by the time the closure is called,
|
|
// but we can't create the Handler ahead of time because it's not Send
|
|
let diag_opts = (options.error_format, options.edition, options.debugging_opts.clone());
|
|
let show_coverage = options.show_coverage;
|
|
let run_check = options.run_check;
|
|
|
|
// First, parse the crate and extract all relevant information.
|
|
info!("starting to run rustc");
|
|
|
|
// Interpret the input file as a rust source file, passing it through the
|
|
// compiler all the way through the analysis passes. The rustdoc output is
|
|
// then generated from the cleaned AST of the crate. This runs all the
|
|
// plug/cleaning passes.
|
|
let crate_version = options.crate_version.clone();
|
|
|
|
let default_passes = options.default_passes;
|
|
let output_format = options.output_format;
|
|
// FIXME: fix this clone (especially render_options)
|
|
let externs = options.externs.clone();
|
|
let manual_passes = options.manual_passes.clone();
|
|
let render_options = options.render_options.clone();
|
|
let config = core::create_config(options);
|
|
|
|
interface::create_compiler_and_run(config, |compiler| {
|
|
compiler.enter(|queries| {
|
|
let sess = compiler.session();
|
|
|
|
// We need to hold on to the complete resolver, so we cause everything to be
|
|
// cloned for the analysis passes to use. Suboptimal, but necessary in the
|
|
// current architecture.
|
|
let resolver = core::create_resolver(externs, queries, &sess);
|
|
|
|
if sess.has_errors() {
|
|
sess.fatal("Compilation failed, aborting rustdoc");
|
|
}
|
|
|
|
let mut global_ctxt = abort_on_err(queries.global_ctxt(), sess).peek_mut();
|
|
|
|
global_ctxt.enter(|tcx| {
|
|
let (krate, render_opts, mut cache) = sess.time("run_global_ctxt", || {
|
|
core::run_global_ctxt(
|
|
tcx,
|
|
resolver,
|
|
default_passes,
|
|
manual_passes,
|
|
render_options,
|
|
output_format,
|
|
)
|
|
});
|
|
info!("finished with rustc");
|
|
|
|
cache.crate_version = crate_version;
|
|
|
|
if show_coverage {
|
|
// if we ran coverage, bail early, we don't need to also generate docs at this point
|
|
// (also we didn't load in any of the useful passes)
|
|
return Ok(());
|
|
} else if run_check {
|
|
// Since we're in "check" mode, no need to generate anything beyond this point.
|
|
return Ok(());
|
|
}
|
|
|
|
info!("going to format");
|
|
let (error_format, edition, debugging_options) = diag_opts;
|
|
let diag = core::new_handler(error_format, None, &debugging_options);
|
|
match output_format {
|
|
config::OutputFormat::Html => sess.time("render_html", || {
|
|
run_renderer::<html::render::Context<'_>>(
|
|
krate,
|
|
render_opts,
|
|
cache,
|
|
&diag,
|
|
edition,
|
|
tcx,
|
|
)
|
|
}),
|
|
config::OutputFormat::Json => sess.time("render_json", || {
|
|
run_renderer::<json::JsonRenderer<'_>>(
|
|
krate,
|
|
render_opts,
|
|
cache,
|
|
&diag,
|
|
edition,
|
|
tcx,
|
|
)
|
|
}),
|
|
}
|
|
})
|
|
})
|
|
})
|
|
}
|