blob: 8f10ab2d3aca7818f47fae7f2c59fdcf3f9db0da [file] [log] [blame]
use std::collections::BTreeMap;
use std::convert::TryFrom;
use std::ffi::OsStr;
use std::fmt;
use std::path::PathBuf;
use std::str::FromStr;
use rustc_data_structures::fx::FxHashMap;
use rustc_session::config::{self, parse_crate_types_from_list, parse_externs, CrateType};
use rustc_session::config::{
build_codegen_options, build_debugging_options, get_cmd_lint_options, host_triple,
nightly_options,
};
use rustc_session::config::{CodegenOptions, DebuggingOptions, ErrorOutputType, Externs};
use rustc_session::getopts;
use rustc_session::lint::Level;
use rustc_session::search_paths::SearchPath;
use rustc_span::edition::Edition;
use rustc_target::spec::TargetTriple;
use crate::core::new_handler;
use crate::externalfiles::ExternalHtml;
use crate::html;
use crate::html::markdown::IdMap;
use crate::html::render::StylePath;
use crate::html::static_files;
use crate::opts;
use crate::passes::{self, Condition, DefaultPassOption};
use crate::theme;
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
crate enum OutputFormat {
Json,
Html,
}
impl Default for OutputFormat {
fn default() -> OutputFormat {
OutputFormat::Html
}
}
impl OutputFormat {
crate fn is_json(&self) -> bool {
matches!(self, OutputFormat::Json)
}
}
impl TryFrom<&str> for OutputFormat {
type Error = String;
fn try_from(value: &str) -> Result<Self, Self::Error> {
match value {
"json" => Ok(OutputFormat::Json),
"html" => Ok(OutputFormat::Html),
_ => Err(format!("unknown output format `{}`", value)),
}
}
}
/// Configuration options for rustdoc.
#[derive(Clone)]
crate struct Options {
// Basic options / Options passed directly to rustc
/// The crate root or Markdown file to load.
crate input: PathBuf,
/// The name of the crate being documented.
crate crate_name: Option<String>,
/// Whether or not this is a proc-macro crate
crate proc_macro_crate: bool,
/// How to format errors and warnings.
crate error_format: ErrorOutputType,
/// Library search paths to hand to the compiler.
crate libs: Vec<SearchPath>,
/// Library search paths strings to hand to the compiler.
crate lib_strs: Vec<String>,
/// The list of external crates to link against.
crate externs: Externs,
/// The list of external crates strings to link against.
crate extern_strs: Vec<String>,
/// List of `cfg` flags to hand to the compiler. Always includes `rustdoc`.
crate cfgs: Vec<String>,
/// Codegen options to hand to the compiler.
crate codegen_options: CodegenOptions,
/// Codegen options strings to hand to the compiler.
crate codegen_options_strs: Vec<String>,
/// Debugging (`-Z`) options to pass to the compiler.
crate debugging_opts: DebuggingOptions,
/// Debugging (`-Z`) options strings to pass to the compiler.
crate debugging_opts_strs: Vec<String>,
/// The target used to compile the crate against.
crate target: TargetTriple,
/// Edition used when reading the crate. Defaults to "2015". Also used by default when
/// compiling doctests from the crate.
crate edition: Edition,
/// The path to the sysroot. Used during the compilation process.
crate maybe_sysroot: Option<PathBuf>,
/// Lint information passed over the command-line.
crate lint_opts: Vec<(String, Level)>,
/// Whether to ask rustc to describe the lints it knows.
crate describe_lints: bool,
/// What level to cap lints at.
crate lint_cap: Option<Level>,
// Options specific to running doctests
/// Whether we should run doctests instead of generating docs.
crate should_test: bool,
/// List of arguments to pass to the test harness, if running tests.
crate test_args: Vec<String>,
/// The working directory in which to run tests.
crate test_run_directory: Option<PathBuf>,
/// Optional path to persist the doctest executables to, defaults to a
/// temporary directory if not set.
crate persist_doctests: Option<PathBuf>,
/// Runtool to run doctests with
crate runtool: Option<String>,
/// Arguments to pass to the runtool
crate runtool_args: Vec<String>,
/// Whether to allow ignoring doctests on a per-target basis
/// For example, using ignore-foo to ignore running the doctest on any target that
/// contains "foo" as a substring
crate enable_per_target_ignores: bool,
/// The path to a rustc-like binary to build tests with. If not set, we
/// default to loading from `$sysroot/bin/rustc`.
crate test_builder: Option<PathBuf>,
// Options that affect the documentation process
/// The selected default set of passes to use.
///
/// Be aware: This option can come both from the CLI and from crate attributes!
crate default_passes: DefaultPassOption,
/// Any passes manually selected by the user.
///
/// Be aware: This option can come both from the CLI and from crate attributes!
crate manual_passes: Vec<String>,
/// Whether to display warnings during doc generation or while gathering doctests. By default,
/// all non-rustdoc-specific lints are allowed when generating docs.
crate display_warnings: bool,
/// Whether to run the `calculate-doc-coverage` pass, which counts the number of public items
/// with and without documentation.
crate show_coverage: bool,
// Options that alter generated documentation pages
/// Crate version to note on the sidebar of generated docs.
crate crate_version: Option<String>,
/// Collected options specific to outputting final pages.
crate render_options: RenderOptions,
/// The format that we output when rendering.
///
/// Currently used only for the `--show-coverage` option.
crate output_format: OutputFormat,
/// If this option is set to `true`, rustdoc will only run checks and not generate
/// documentation.
crate run_check: bool,
/// Whether doctests should emit unused externs
crate json_unused_externs: bool,
}
impl fmt::Debug for Options {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
struct FmtExterns<'a>(&'a Externs);
impl<'a> fmt::Debug for FmtExterns<'a> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_map().entries(self.0.iter()).finish()
}
}
f.debug_struct("Options")
.field("input", &self.input)
.field("crate_name", &self.crate_name)
.field("proc_macro_crate", &self.proc_macro_crate)
.field("error_format", &self.error_format)
.field("libs", &self.libs)
.field("externs", &FmtExterns(&self.externs))
.field("cfgs", &self.cfgs)
.field("codegen_options", &"...")
.field("debugging_options", &"...")
.field("target", &self.target)
.field("edition", &self.edition)
.field("maybe_sysroot", &self.maybe_sysroot)
.field("lint_opts", &self.lint_opts)
.field("describe_lints", &self.describe_lints)
.field("lint_cap", &self.lint_cap)
.field("should_test", &self.should_test)
.field("test_args", &self.test_args)
.field("test_run_directory", &self.test_run_directory)
.field("persist_doctests", &self.persist_doctests)
.field("default_passes", &self.default_passes)
.field("manual_passes", &self.manual_passes)
.field("display_warnings", &self.display_warnings)
.field("show_coverage", &self.show_coverage)
.field("crate_version", &self.crate_version)
.field("render_options", &self.render_options)
.field("runtool", &self.runtool)
.field("runtool_args", &self.runtool_args)
.field("enable-per-target-ignores", &self.enable_per_target_ignores)
.field("run_check", &self.run_check)
.finish()
}
}
/// Configuration options for the HTML page-creation process.
#[derive(Clone, Debug)]
crate struct RenderOptions {
/// Output directory to generate docs into. Defaults to `doc`.
crate output: PathBuf,
/// External files to insert into generated pages.
crate external_html: ExternalHtml,
/// A pre-populated `IdMap` with the default headings and any headings added by Markdown files
/// processed by `external_html`.
crate id_map: IdMap,
/// If present, playground URL to use in the "Run" button added to code samples.
///
/// Be aware: This option can come both from the CLI and from crate attributes!
crate playground_url: Option<String>,
/// Whether to sort modules alphabetically on a module page instead of using declaration order.
/// `true` by default.
//
// FIXME(misdreavus): the flag name is `--sort-modules-by-appearance` but the meaning is
// inverted once read.
crate sort_modules_alphabetically: bool,
/// List of themes to extend the docs with. Original argument name is included to assist in
/// displaying errors if it fails a theme check.
crate themes: Vec<StylePath>,
/// If present, CSS file that contains rules to add to the default CSS.
crate extension_css: Option<PathBuf>,
/// A map of crate names to the URL to use instead of querying the crate's `html_root_url`.
crate extern_html_root_urls: BTreeMap<String, String>,
/// A map of the default settings (values are as for DOM storage API). Keys should lack the
/// `rustdoc-` prefix.
crate default_settings: FxHashMap<String, String>,
/// If present, suffix added to CSS/JavaScript files when referencing them in generated pages.
crate resource_suffix: String,
/// Whether to run the static CSS/JavaScript through a minifier when outputting them. `true` by
/// default.
//
// FIXME(misdreavus): the flag name is `--disable-minification` but the meaning is inverted
// once read.
crate enable_minification: bool,
/// Whether to create an index page in the root of the output directory. If this is true but
/// `enable_index_page` is None, generate a static listing of crates instead.
crate enable_index_page: bool,
/// A file to use as the index page at the root of the output directory. Overrides
/// `enable_index_page` to be true if set.
crate index_page: Option<PathBuf>,
/// An optional path to use as the location of static files. If not set, uses combinations of
/// `../` to reach the documentation root.
crate static_root_path: Option<String>,
// Options specific to reading standalone Markdown files
/// Whether to generate a table of contents on the output file when reading a standalone
/// Markdown file.
crate markdown_no_toc: bool,
/// Additional CSS files to link in pages generated from standalone Markdown files.
crate markdown_css: Vec<String>,
/// If present, playground URL to use in the "Run" button added to code samples generated from
/// standalone Markdown files. If not present, `playground_url` is used.
crate markdown_playground_url: Option<String>,
/// If false, the `select` element to have search filtering by crates on rendered docs
/// won't be generated.
crate generate_search_filter: bool,
/// Document items that have lower than `pub` visibility.
crate document_private: bool,
/// Document items that have `doc(hidden)`.
crate document_hidden: bool,
/// If `true`, generate a JSON file in the crate folder instead of HTML redirection files.
crate generate_redirect_map: bool,
crate unstable_features: rustc_feature::UnstableFeatures,
crate emit: Vec<EmitType>,
}
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
crate enum EmitType {
Unversioned,
Toolchain,
InvocationSpecific,
}
impl FromStr for EmitType {
type Err = ();
fn from_str(s: &str) -> Result<Self, Self::Err> {
use EmitType::*;
match s {
"unversioned-shared-resources" => Ok(Unversioned),
"toolchain-shared-resources" => Ok(Toolchain),
"invocation-specific" => Ok(InvocationSpecific),
_ => Err(()),
}
}
}
impl RenderOptions {
crate fn should_emit_crate(&self) -> bool {
self.emit.is_empty() || self.emit.contains(&EmitType::InvocationSpecific)
}
}
impl Options {
/// Parses the given command-line for options. If an error message or other early-return has
/// been printed, returns `Err` with the exit code.
crate fn from_matches(matches: &getopts::Matches) -> Result<Options, i32> {
// Check for unstable options.
nightly_options::check_nightly_options(&matches, &opts());
if matches.opt_present("h") || matches.opt_present("help") {
crate::usage("rustdoc");
return Err(0);
} else if matches.opt_present("version") {
rustc_driver::version("rustdoc", &matches);
return Err(0);
}
if matches.opt_strs("passes") == ["list"] {
println!("Available passes for running rustdoc:");
for pass in passes::PASSES {
println!("{:>20} - {}", pass.name, pass.description);
}
println!("\nDefault passes for rustdoc:");
for p in passes::DEFAULT_PASSES {
print!("{:>20}", p.pass.name);
println_condition(p.condition);
}
if nightly_options::match_is_nightly_build(matches) {
println!("\nPasses run with `--show-coverage`:");
for p in passes::COVERAGE_PASSES {
print!("{:>20}", p.pass.name);
println_condition(p.condition);
}
}
fn println_condition(condition: Condition) {
use Condition::*;
match condition {
Always => println!(),
WhenDocumentPrivate => println!(" (when --document-private-items)"),
WhenNotDocumentPrivate => println!(" (when not --document-private-items)"),
WhenNotDocumentHidden => println!(" (when not --document-hidden-items)"),
}
}
return Err(0);
}
if matches.opt_strs("print").iter().any(|opt| opt == "unversioned-files") {
for file in crate::html::render::FILES_UNVERSIONED.keys() {
println!("{}", file);
}
return Err(0);
}
let color = config::parse_color(&matches);
let config::JsonConfig { json_rendered, json_unused_externs, .. } =
config::parse_json(&matches);
let error_format = config::parse_error_format(&matches, color, json_rendered);
let codegen_options = build_codegen_options(matches, error_format);
let debugging_opts = build_debugging_options(matches, error_format);
let diag = new_handler(error_format, None, &debugging_opts);
// check for deprecated options
check_deprecated_options(&matches, &diag);
let mut emit = Vec::new();
for list in matches.opt_strs("emit") {
for kind in list.split(',') {
match kind.parse() {
Ok(kind) => emit.push(kind),
Err(()) => {
diag.err(&format!("unrecognized emission type: {}", kind));
return Err(1);
}
}
}
}
// check for `--output-format=json`
if !matches!(matches.opt_str("output-format").as_deref(), None | Some("html"))
&& !matches.opt_present("show-coverage")
&& !nightly_options::is_unstable_enabled(matches)
{
rustc_session::early_error(
error_format,
"the -Z unstable-options flag must be passed to enable --output-format for documentation generation (see https://github.com/rust-lang/rust/issues/76578)",
);
}
let to_check = matches.opt_strs("check-theme");
if !to_check.is_empty() {
let paths = theme::load_css_paths(static_files::themes::LIGHT.as_bytes());
let mut errors = 0;
println!("rustdoc: [check-theme] Starting tests! (Ignoring all other arguments)");
for theme_file in to_check.iter() {
print!(" - Checking \"{}\"...", theme_file);
let (success, differences) = theme::test_theme_against(theme_file, &paths, &diag);
if !differences.is_empty() || !success {
println!(" FAILED");
errors += 1;
if !differences.is_empty() {
println!("{}", differences.join("\n"));
}
} else {
println!(" OK");
}
}
if errors != 0 {
return Err(1);
}
return Err(0);
}
if matches.free.is_empty() {
diag.struct_err("missing file operand").emit();
return Err(1);
}
if matches.free.len() > 1 {
diag.struct_err("too many file operands").emit();
return Err(1);
}
let input = PathBuf::from(&matches.free[0]);
let libs = matches
.opt_strs("L")
.iter()
.map(|s| SearchPath::from_cli_opt(s, error_format))
.collect();
let externs = parse_externs(&matches, &debugging_opts, error_format);
let extern_html_root_urls = match parse_extern_html_roots(&matches) {
Ok(ex) => ex,
Err(err) => {
diag.struct_err(err).emit();
return Err(1);
}
};
let default_settings: Vec<Vec<(String, String)>> = vec![
matches
.opt_str("default-theme")
.iter()
.map(|theme| {
vec![
("use-system-theme".to_string(), "false".to_string()),
("theme".to_string(), theme.to_string()),
]
})
.flatten()
.collect(),
matches
.opt_strs("default-setting")
.iter()
.map(|s| match s.split_once('=') {
None => (s.clone(), "true".to_string()),
Some((k, v)) => (k.to_string(), v.to_string()),
})
.collect(),
];
let default_settings = default_settings.into_iter().flatten().collect();
let test_args = matches.opt_strs("test-args");
let test_args: Vec<String> =
test_args.iter().flat_map(|s| s.split_whitespace()).map(|s| s.to_string()).collect();
let should_test = matches.opt_present("test");
let output =
matches.opt_str("o").map(|s| PathBuf::from(&s)).unwrap_or_else(|| PathBuf::from("doc"));
let cfgs = matches.opt_strs("cfg");
let extension_css = matches.opt_str("e").map(|s| PathBuf::from(&s));
if let Some(ref p) = extension_css {
if !p.is_file() {
diag.struct_err("option --extend-css argument must be a file").emit();
return Err(1);
}
}
let mut themes = Vec::new();
if matches.opt_present("theme") {
let paths = theme::load_css_paths(static_files::themes::LIGHT.as_bytes());
for (theme_file, theme_s) in
matches.opt_strs("theme").iter().map(|s| (PathBuf::from(&s), s.to_owned()))
{
if !theme_file.is_file() {
diag.struct_err(&format!("invalid argument: \"{}\"", theme_s))
.help("arguments to --theme must be files")
.emit();
return Err(1);
}
if theme_file.extension() != Some(OsStr::new("css")) {
diag.struct_err(&format!("invalid argument: \"{}\"", theme_s))
.help("arguments to --theme must have a .css extension")
.emit();
return Err(1);
}
let (success, ret) = theme::test_theme_against(&theme_file, &paths, &diag);
if !success {
diag.struct_err(&format!("error loading theme file: \"{}\"", theme_s)).emit();
return Err(1);
} else if !ret.is_empty() {
diag.struct_warn(&format!(
"theme file \"{}\" is missing CSS rules from the default theme",
theme_s
))
.warn("the theme may appear incorrect when loaded")
.help(&format!(
"to see what rules are missing, call `rustdoc --check-theme \"{}\"`",
theme_s
))
.emit();
}
themes.push(StylePath { path: theme_file, disabled: true });
}
}
let edition = config::parse_crate_edition(&matches);
let mut id_map = html::markdown::IdMap::new();
let external_html = match ExternalHtml::load(
&matches.opt_strs("html-in-header"),
&matches.opt_strs("html-before-content"),
&matches.opt_strs("html-after-content"),
&matches.opt_strs("markdown-before-content"),
&matches.opt_strs("markdown-after-content"),
nightly_options::match_is_nightly_build(&matches),
&diag,
&mut id_map,
edition,
&None,
) {
Some(eh) => eh,
None => return Err(3),
};
match matches.opt_str("r").as_deref() {
Some("rust") | None => {}
Some(s) => {
diag.struct_err(&format!("unknown input format: {}", s)).emit();
return Err(1);
}
}
let index_page = matches.opt_str("index-page").map(|s| PathBuf::from(&s));
if let Some(ref index_page) = index_page {
if !index_page.is_file() {
diag.struct_err("option `--index-page` argument must be a file").emit();
return Err(1);
}
}
let target =
matches.opt_str("target").map_or(TargetTriple::from_triple(host_triple()), |target| {
if target.ends_with(".json") {
TargetTriple::TargetPath(PathBuf::from(target))
} else {
TargetTriple::TargetTriple(target)
}
});
let show_coverage = matches.opt_present("show-coverage");
let default_passes = if matches.opt_present("no-defaults") {
passes::DefaultPassOption::None
} else if show_coverage {
passes::DefaultPassOption::Coverage
} else {
passes::DefaultPassOption::Default
};
let manual_passes = matches.opt_strs("passes");
let crate_types = match parse_crate_types_from_list(matches.opt_strs("crate-type")) {
Ok(types) => types,
Err(e) => {
diag.struct_err(&format!("unknown crate type: {}", e)).emit();
return Err(1);
}
};
let output_format = match matches.opt_str("output-format") {
Some(s) => match OutputFormat::try_from(s.as_str()) {
Ok(out_fmt) => {
if !out_fmt.is_json() && show_coverage {
diag.struct_err(
"html output format isn't supported for the --show-coverage option",
)
.emit();
return Err(1);
}
out_fmt
}
Err(e) => {
diag.struct_err(&e).emit();
return Err(1);
}
},
None => OutputFormat::default(),
};
let crate_name = matches.opt_str("crate-name");
let proc_macro_crate = crate_types.contains(&CrateType::ProcMacro);
let playground_url = matches.opt_str("playground-url");
let maybe_sysroot = matches.opt_str("sysroot").map(PathBuf::from);
let display_warnings = matches.opt_present("display-warnings");
let sort_modules_alphabetically = !matches.opt_present("sort-modules-by-appearance");
let resource_suffix = matches.opt_str("resource-suffix").unwrap_or_default();
let enable_minification = !matches.opt_present("disable-minification");
let markdown_no_toc = matches.opt_present("markdown-no-toc");
let markdown_css = matches.opt_strs("markdown-css");
let markdown_playground_url = matches.opt_str("markdown-playground-url");
let crate_version = matches.opt_str("crate-version");
let enable_index_page = matches.opt_present("enable-index-page") || index_page.is_some();
let static_root_path = matches.opt_str("static-root-path");
let generate_search_filter = !matches.opt_present("disable-per-crate-search");
let test_run_directory = matches.opt_str("test-run-directory").map(PathBuf::from);
let persist_doctests = matches.opt_str("persist-doctests").map(PathBuf::from);
let test_builder = matches.opt_str("test-builder").map(PathBuf::from);
let codegen_options_strs = matches.opt_strs("C");
let debugging_opts_strs = matches.opt_strs("Z");
let lib_strs = matches.opt_strs("L");
let extern_strs = matches.opt_strs("extern");
let runtool = matches.opt_str("runtool");
let runtool_args = matches.opt_strs("runtool-arg");
let enable_per_target_ignores = matches.opt_present("enable-per-target-ignores");
let document_private = matches.opt_present("document-private-items");
let document_hidden = matches.opt_present("document-hidden-items");
let run_check = matches.opt_present("check");
let generate_redirect_map = matches.opt_present("generate-redirect-map");
let (lint_opts, describe_lints, lint_cap) = get_cmd_lint_options(matches, error_format);
Ok(Options {
input,
proc_macro_crate,
error_format,
libs,
lib_strs,
externs,
extern_strs,
cfgs,
codegen_options,
codegen_options_strs,
debugging_opts,
debugging_opts_strs,
target,
edition,
maybe_sysroot,
lint_opts,
describe_lints,
lint_cap,
should_test,
test_args,
default_passes,
manual_passes,
display_warnings,
show_coverage,
crate_version,
test_run_directory,
persist_doctests,
runtool,
runtool_args,
enable_per_target_ignores,
test_builder,
run_check,
render_options: RenderOptions {
output,
external_html,
id_map,
playground_url,
sort_modules_alphabetically,
themes,
extension_css,
extern_html_root_urls,
default_settings,
resource_suffix,
enable_minification,
enable_index_page,
index_page,
static_root_path,
markdown_no_toc,
markdown_css,
markdown_playground_url,
generate_search_filter,
document_private,
document_hidden,
generate_redirect_map,
unstable_features: rustc_feature::UnstableFeatures::from_environment(
crate_name.as_deref(),
),
emit,
},
crate_name,
output_format,
json_unused_externs,
})
}
/// Returns `true` if the file given as `self.input` is a Markdown file.
crate fn markdown_input(&self) -> bool {
self.input.extension().map_or(false, |e| e == "md" || e == "markdown")
}
}
/// Prints deprecation warnings for deprecated options
fn check_deprecated_options(matches: &getopts::Matches, diag: &rustc_errors::Handler) {
let deprecated_flags = ["input-format", "no-defaults", "passes"];
for flag in deprecated_flags.iter() {
if matches.opt_present(flag) {
let mut err = diag.struct_warn(&format!("the `{}` flag is deprecated", flag));
err.note(
"see issue #44136 <https://github.com/rust-lang/rust/issues/44136> \
for more information",
);
if *flag == "no-defaults" {
err.help("you may want to use --document-private-items");
}
err.emit();
}
}
let removed_flags = ["plugins", "plugin-path"];
for &flag in removed_flags.iter() {
if matches.opt_present(flag) {
diag.struct_warn(&format!("the '{}' flag no longer functions", flag))
.warn("see CVE-2018-1000622")
.emit();
}
}
}
/// Extracts `--extern-html-root-url` arguments from `matches` and returns a map of crate names to
/// the given URLs. If an `--extern-html-root-url` argument was ill-formed, returns an error
/// describing the issue.
fn parse_extern_html_roots(
matches: &getopts::Matches,
) -> Result<BTreeMap<String, String>, &'static str> {
let mut externs = BTreeMap::new();
for arg in &matches.opt_strs("extern-html-root-url") {
let (name, url) =
arg.split_once('=').ok_or("--extern-html-root-url must be of the form name=url")?;
externs.insert(name.to_string(), url.to_string());
}
Ok(externs)
}