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Generate default lint completions

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This commit is contained in:
Lukas Wirth 2021-06-04 18:35:19 +02:00
parent 5d17b6a687
commit 343df88ac7
7 changed files with 1130 additions and 777 deletions
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52
xtask/src/codegen/gen_lint_completions.rs
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@ -12,23 +12,54 @@ pub(crate) fn generate_lint_completions() -> Result<()> {
cmd!("git clone --depth=1 https://github.com/rust-lang/rust ./target/rust").run()?;
}
let mut contents = String::from("use crate::completions::attribute::LintCompletion;\n\n");
generate_descriptor(&mut contents, "./target/rust/src/doc/unstable-book/src".into())?;
let mut contents = String::from(
r#"pub struct Lint {
pub label: &'static str,
pub description: &'static str,
}
"#,
);
generate_lint_descriptor(&mut contents)?;
contents.push('\n');
generate_feature_descriptor(&mut contents, "./target/rust/src/doc/unstable-book/src".into())?;
contents.push('\n');
cmd!("curl http://rust-lang.github.io/rust-clippy/master/lints.json --output ./target/clippy_lints.json").run()?;
generate_descriptor_clippy(&mut contents, &Path::new("./target/clippy_lints.json"))?;
let contents = reformat(&contents)?;
let destination =
project_root().join("crates/ide_completion/src/generated_lint_completions.rs");
let destination = project_root().join("crates/ide_db/src/helpers/generated_lints.rs");
ensure_file_contents(destination.as_path(), &contents)?;
Ok(())
}
fn generate_descriptor(buf: &mut String, src_dir: PathBuf) -> Result<()> {
buf.push_str(r#"pub const FEATURES: &[LintCompletion] = &["#);
fn generate_lint_descriptor(buf: &mut String) -> Result<()> {
let stdout = cmd!("rustc -W help").read()?;
let start = stdout.find("---- ------- -------").ok_or_else(|| anyhow::format_err!(""))?;
let end =
stdout.rfind("Lint groups provided by rustc:").ok_or_else(|| anyhow::format_err!(""))?;
buf.push_str(r#"pub const DEFAULT_LINTS: &[Lint] = &["#);
buf.push('\n');
let mut lints = stdout[start..end]
.lines()
.filter(|l| !l.is_empty())
.flat_map(|line| {
let (name, rest) = line.trim().split_once(char::is_whitespace)?;
let (_default_level, description) = rest.trim().split_once(char::is_whitespace)?;
Some((name.trim(), description.trim()))
})
.collect::<Vec<_>>();
lints.sort_by(|(ident, _), (ident2, _)| ident.cmp(ident2));
lints.into_iter().for_each(|(name, description)| push_lint_completion(buf, name, description));
buf.push_str("];\n");
Ok(())
}
fn generate_feature_descriptor(buf: &mut String, src_dir: PathBuf) -> Result<()> {
buf.push_str(r#"pub const FEATURES: &[Lint] = &["#);
buf.push('\n');
let mut vec = ["language-features", "library-features"]
.iter()
@ -46,9 +77,8 @@ fn generate_descriptor(buf: &mut String, src_dir: PathBuf) -> Result<()> {
})
.collect::<Vec<_>>();
vec.sort_by(|(feature_ident, _), (feature_ident2, _)| feature_ident.cmp(feature_ident2));
vec.into_iter().for_each(|(feature_ident, doc)| {
push_lint_completion(buf, &feature_ident, &doc);
});
vec.into_iter()
.for_each(|(feature_ident, doc)| push_lint_completion(buf, &feature_ident, &doc));
buf.push_str("];\n");
Ok(())
}
@ -90,7 +120,7 @@ fn generate_descriptor_clippy(buf: &mut String, path: &Path) -> Result<()> {
}
}
clippy_lints.sort_by(|lint, lint2| lint.id.cmp(&lint2.id));
buf.push_str(r#"pub const CLIPPY_LINTS: &[LintCompletion] = &["#);
buf.push_str(r#"pub const CLIPPY_LINTS: &[Lint] = &["#);
buf.push('\n');
clippy_lints.into_iter().for_each(|clippy_lint| {
let lint_ident = format!("clippy::{}", clippy_lint.id);
@ -106,7 +136,7 @@ fn generate_descriptor_clippy(buf: &mut String, path: &Path) -> Result<()> {
fn push_lint_completion(buf: &mut String, label: &str, description: &str) {
writeln!(
buf,
r###" LintCompletion {{
r###" Lint {{
label: "{}",
description: r##"{}"##
}},"###,