Rollup merge of #82651 - jyn514:rustdoc-warnings, r=GuillaumeGomez

Cleanup rustdoc warnings

## Clean up error reporting for deprecated passes

Using `error!` here goes all the way back to the original commit, https://github.com/rust-lang/rust/pull/8540. I don't see any reason to use logging; rustdoc should use diagnostics wherever possible. See https://github.com/rust-lang/rust/pull/81932#issuecomment-785291244 for further context.

- Use spans for deprecated attributes
- Use a proper diagnostic for unknown passes, instead of error logging
- Add tests for unknown passes
- Improve some wording in diagnostics

##  Report that `doc(plugins)` doesn't work using diagnostics instead of `eprintln!`

This also adds a test for the output.

This was added in https://github.com/rust-lang/rust/pull/52194. I don't see any particular reason not to use diagnostics here, I think it was just missed in https://github.com/rust-lang/rust/pull/50541.
This commit is contained in:
Yuki Okushi 2021-03-07 10:41:13 +09:00 committed by GitHub
commit f3218dfa57
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5 changed files with 91 additions and 41 deletions

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@ -576,7 +576,8 @@ impl CheckAttrVisitor<'tcx> {
sym::masked,
sym::no_default_passes, // deprecated
sym::no_inline,
sym::passes, // deprecated
sym::passes, // deprecated
sym::plugins, // removed, but rustdoc warns about it itself
sym::primitive,
sym::spotlight,
sym::test,

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@ -658,9 +658,8 @@ fn check_deprecated_options(matches: &getopts::Matches, diag: &rustc_errors::Han
{
continue;
}
let mut err =
diag.struct_warn(&format!("the '{}' flag is considered deprecated", flag));
err.warn(
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",
);

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@ -22,7 +22,7 @@ use rustc_session::DiagnosticOutput;
use rustc_session::Session;
use rustc_span::source_map;
use rustc_span::symbol::sym;
use rustc_span::DUMMY_SP;
use rustc_span::{Span, DUMMY_SP};
use std::cell::RefCell;
use std::collections::hash_map::Entry;
@ -389,7 +389,7 @@ crate fn run_global_ctxt(
tcx: TyCtxt<'_>,
resolver: Rc<RefCell<interface::BoxedResolver>>,
mut default_passes: passes::DefaultPassOption,
mut manual_passes: Vec<String>,
manual_passes: Vec<String>,
render_options: RenderOptions,
output_format: OutputFormat,
) -> (clean::Crate, RenderOptions, Cache) {
@ -490,21 +490,44 @@ crate fn run_global_ctxt(
}
}
fn report_deprecated_attr(name: &str, diag: &rustc_errors::Handler) {
let mut msg = diag
.struct_warn(&format!("the `#![doc({})]` attribute is considered deprecated", name));
msg.warn(
fn report_deprecated_attr(name: &str, diag: &rustc_errors::Handler, sp: Span) {
let mut msg =
diag.struct_span_warn(sp, &format!("the `#![doc({})]` attribute is deprecated", name));
msg.note(
"see issue #44136 <https://github.com/rust-lang/rust/issues/44136> \
for more information",
);
if name == "no_default_passes" {
msg.help("you may want to use `#![doc(document_private_items)]`");
} else if name.starts_with("plugins") {
msg.warn("`#![doc(plugins = \"...\")]` no longer functions; see CVE-2018-1000622 <https://nvd.nist.gov/vuln/detail/CVE-2018-1000622>");
}
msg.emit();
}
let parse_pass = |name: &str, sp: Option<Span>| {
if let Some(pass) = passes::find_pass(name) {
Some(ConditionalPass::always(pass))
} else {
let msg = &format!("ignoring unknown pass `{}`", name);
let mut warning = if let Some(sp) = sp {
tcx.sess.struct_span_warn(sp, msg)
} else {
tcx.sess.struct_warn(msg)
};
if name == "collapse-docs" {
warning.note("the `collapse-docs` pass was removed in #80261 <https://github.com/rust-lang/rust/pull/80261>");
}
warning.emit();
None
}
};
let mut manual_passes: Vec<_> =
manual_passes.into_iter().flat_map(|name| parse_pass(&name, None)).collect();
// Process all of the crate attributes, extracting plugin metadata along
// with the passes which we are supposed to run.
for attr in krate.module.as_ref().unwrap().attrs.lists(sym::doc) {
@ -513,29 +536,25 @@ crate fn run_global_ctxt(
let name = attr.name_or_empty();
if attr.is_word() {
if name == sym::no_default_passes {
report_deprecated_attr("no_default_passes", diag);
report_deprecated_attr("no_default_passes", diag, attr.span());
if default_passes == passes::DefaultPassOption::Default {
default_passes = passes::DefaultPassOption::None;
}
}
} else if let Some(value) = attr.value_str() {
let sink = match name {
match name {
sym::passes => {
report_deprecated_attr("passes = \"...\"", diag);
&mut manual_passes
report_deprecated_attr("passes = \"...\"", diag, attr.span());
}
sym::plugins => {
report_deprecated_attr("plugins = \"...\"", diag);
eprintln!(
"WARNING: `#![doc(plugins = \"...\")]` \
no longer functions; see CVE-2018-1000622"
);
report_deprecated_attr("plugins = \"...\"", diag, attr.span());
continue;
}
_ => continue,
};
for name in value.as_str().split_whitespace() {
sink.push(name.to_string());
let span = attr.name_value_literal_span().unwrap_or(attr.span());
manual_passes.extend(parse_pass(name, Some(span)));
}
}
@ -544,17 +563,7 @@ crate fn run_global_ctxt(
}
}
let passes = passes::defaults(default_passes).iter().copied().chain(
manual_passes.into_iter().flat_map(|name| {
if let Some(pass) = passes::find_pass(&name) {
Some(ConditionalPass::always(pass))
} else {
error!("unknown pass {}, skipping", name);
None
}
}),
);
let passes = passes::defaults(default_passes).iter().copied().chain(manual_passes);
info!("Executing passes");
for p in passes {

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@ -1,7 +1,17 @@
// check-pass
// compile-flags: --passes unknown-pass
// error-pattern: ignoring unknown pass `unknown-pass`
#![doc(no_default_passes, passes = "unindent-comments")]
struct SomeStruct;
pub struct OtherStruct;
#![doc(no_default_passes)]
//~^ WARNING attribute is deprecated
//~| NOTE see issue #44136
//~| HELP use `#![doc(document_private_items)]`
#![doc(passes = "collapse-docs unindent-comments")]
//~^ WARNING attribute is deprecated
//~| NOTE see issue #44136
//~| WARNING ignoring unknown pass
//~| NOTE `collapse-docs` pass was removed
#![doc(plugins = "xxx")]
//~^ WARNING attribute is deprecated
//~| NOTE see issue #44136
//~| WARNING no longer functions; see CVE

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@ -1,11 +1,42 @@
warning: the `#![doc(no_default_passes)]` attribute is considered deprecated
warning: the `passes` flag is deprecated
|
= warning: see issue #44136 <https://github.com/rust-lang/rust/issues/44136> for more information
= note: see issue #44136 <https://github.com/rust-lang/rust/issues/44136> for more information
warning: ignoring unknown pass `unknown-pass`
warning: the `#![doc(no_default_passes)]` attribute is deprecated
--> $DIR/deprecated-attrs.rs:5:8
|
LL | #![doc(no_default_passes)]
| ^^^^^^^^^^^^^^^^^
|
= note: see issue #44136 <https://github.com/rust-lang/rust/issues/44136> for more information
= help: you may want to use `#![doc(document_private_items)]`
warning: the `#![doc(passes = "...")]` attribute is considered deprecated
warning: the `#![doc(passes = "...")]` attribute is deprecated
--> $DIR/deprecated-attrs.rs:9:8
|
= warning: see issue #44136 <https://github.com/rust-lang/rust/issues/44136> for more information
LL | #![doc(passes = "collapse-docs unindent-comments")]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #44136 <https://github.com/rust-lang/rust/issues/44136> for more information
warning: 2 warnings emitted
warning: ignoring unknown pass `collapse-docs`
--> $DIR/deprecated-attrs.rs:9:17
|
LL | #![doc(passes = "collapse-docs unindent-comments")]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: the `collapse-docs` pass was removed in #80261 <https://github.com/rust-lang/rust/pull/80261>
warning: the `#![doc(plugins = "...")]` attribute is deprecated
--> $DIR/deprecated-attrs.rs:14:8
|
LL | #![doc(plugins = "xxx")]
| ^^^^^^^^^^^^^^^
|
= note: see issue #44136 <https://github.com/rust-lang/rust/issues/44136> for more information
= warning: `#![doc(plugins = "...")]` no longer functions; see CVE-2018-1000622 <https://nvd.nist.gov/vuln/detail/CVE-2018-1000622>
warning: 5 warnings emitted