diff --git a/Cargo.toml b/Cargo.toml index d368b71d9..52f93820c 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -38,6 +38,11 @@ name = "clippy-driver" test = false path = "src/driver.rs" +[[bin]] +name = "clippy-dev" +test = false +path = "src/main.rs" + [dependencies] # begin automatic update clippy_lints = { version = "0.0.212", path = "clippy_lints" } @@ -46,6 +51,7 @@ regex = "1" semver = "0.9" [dev-dependencies] +clippy_dev = { version = "0.0.1", path = "clippy_dev" } cargo_metadata = "0.6" compiletest_rs = "0.3.7" lazy_static = "1.0" diff --git a/clippy_dev/.gitignore b/clippy_dev/.gitignore new file mode 100644 index 000000000..5ca1e06a5 --- /dev/null +++ b/clippy_dev/.gitignore @@ -0,0 +1,38 @@ +# Used by Travis to be able to push: +/.github/deploy_key +out + +# Compiled files +*.o +*.d +*.so +*.rlib +*.dll +*.pyc +*.rmeta + +# Executables +*.exe + +# Generated by Cargo +Cargo.lock +/target +/clippy_lints/target +/clippy_workspace_tests/target + +# Generated by dogfood +/target_recur/ + +# gh pages docs +util/gh-pages/lints.json + +# rustfmt backups +*.rs.bk + +helper.txt +*.iml +.vscode +.idea + +# Used by the Clippy build script +min_version.txt diff --git a/clippy_dev/Cargo.lock b/clippy_dev/Cargo.lock new file mode 100644 index 000000000..ad5c705c2 --- /dev/null +++ b/clippy_dev/Cargo.lock @@ -0,0 +1,215 @@ +[[package]] +name = "aho-corasick" +version = "0.6.6" +source = "registry+https://github.com/rust-lang/crates.io-index" +dependencies = [ + "memchr 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)", +] + +[[package]] +name = "ansi_term" +version = "0.11.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +dependencies = [ + "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)", +] + +[[package]] +name = "atty" +version = "0.2.10" +source = "registry+https://github.com/rust-lang/crates.io-index" +dependencies = [ + "libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)", + "termion 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Regex::new(r#"declare_clippy_lint!\s*[\{(]\s*pub\s+(?P[A-Z_][A-Z_0-9]*)\s*,\s*(?P[a-z_]+)\s*,\s*"(?P(?:[^"\\]+|\\(?s).(?-s))*)"\s*[})]"#).unwrap(); + static ref DEC_DEPRECATED_LINT_RE: Regex = Regex::new(r#"declare_deprecated_lint!\s*[{(]\s*pub\s+(?P[A-Z_][A-Z_0-9]*)\s*,\s*"(?P(?:[^"\\]+|\\(?s).(?-s))*)"\s*[})]"#).unwrap(); + static ref NL_ESCAPE_RE: Regex = Regex::new(r#"\\\n\s*"#).unwrap(); + pub static ref DOCS_LINK: String = "https://rust-lang-nursery.github.io/rust-clippy/master/index.html".to_string(); +} + +#[derive(Clone, PartialEq, Debug)] +pub struct Lint { + pub name: String, + pub group: String, + pub desc: String, + pub deprecation: Option, + pub module: String, +} + +impl Lint { + pub fn new(name: &str, group: &str, desc: &str, deprecation: Option<&str>, module: &str) -> Lint { + Lint { + name: name.to_lowercase(), + group: group.to_string(), + desc: NL_ESCAPE_RE.replace(&desc.replace("\\\"", "\""), "").to_string(), + deprecation: deprecation.map(|d| d.to_string()), + module: module.to_string(), + } + } + + pub fn active_lints(lints: &[Lint]) -> Vec { + lints.iter().filter(|l| l.deprecation.is_none()).cloned().collect::>() + } + + pub fn in_lint_group(group: &str, lints: &[Lint]) -> Vec { + lints.iter().filter(|l| l.group == group).cloned().collect::>() + } +} + +pub fn collect_all() -> Vec { + let mut lints = vec![]; + for direntry in lint_files() { + lints.append(&mut collect_from_file(&direntry)); + } + lints +} + +fn collect_from_file(direntry: &fs::DirEntry) -> Vec { + let mut file = fs::File::open(direntry.path()).unwrap(); + let mut content = String::new(); + file.read_to_string(&mut content).unwrap(); + parse_contents(&content, direntry.path().file_stem().unwrap().to_str().unwrap()) +} + +fn parse_contents(content: &str, filename: &str) -> Vec { + let mut lints: Vec = DEC_CLIPPY_LINT_RE + .captures_iter(&content) + .map(|m| Lint::new(&m["name"], &m["cat"], &m["desc"], None, filename)) + .collect(); + let mut deprecated = DEC_DEPRECATED_LINT_RE + .captures_iter(&content) + .map(|m| Lint::new( &m["name"], "Deprecated", &m["desc"], Some(&m["desc"]), filename)) + .collect(); + lints.append(&mut deprecated); + lints +} + +/// Collects all .rs files in the `clippy_lints/src` directory +fn lint_files() -> Vec { + let paths = fs::read_dir("../clippy_lints/src").unwrap(); + paths + .filter_map(|f| f.ok()) + .filter(|f| f.path().extension() == Some(OsStr::new("rs"))) + .collect::>() +} + +#[test] +fn test_parse_contents() { + let result = parse_contents( + r#" +declare_clippy_lint! { + pub PTR_ARG, + style, + "really long \ + text" +} + +declare_clippy_lint!{ + pub DOC_MARKDOWN, + pedantic, + "single line" +} + +/// some doc comment +declare_deprecated_lint! { + pub SHOULD_ASSERT_EQ, + "`assert!()` will be more flexible with RFC 2011" +} + "#, + "module_name"); + + let expected = vec![ + Lint::new("ptr_arg", "style", "really long text", None, "module_name"), + Lint::new("doc_markdown", "pedantic", "single line", None, "module_name"), + Lint::new( + "should_assert_eq", + "Deprecated", + "`assert!()` will be more flexible with RFC 2011", + Some("`assert!()` will be more flexible with RFC 2011"), + "module_name" + ), + ]; + assert_eq!(expected, result); +} + +#[test] +fn test_active_lints() { + let lints = vec![ + Lint::new("should_assert_eq", "Deprecated", "abc", Some("Reason"), "module_name"), + Lint::new("should_assert_eq2", "Not Deprecated", "abc", None, "module_name") + ]; + let expected = vec![ + Lint::new("should_assert_eq2", "Not Deprecated", "abc", None, "module_name") + ]; + assert_eq!(expected, Lint::active_lints(&lints)); +} + +#[test] +fn test_in_lint_group() { + let lints = vec![ + Lint::new("ptr_arg", "style", "really long text", None, "module_name"), + Lint::new("doc_markdown", "pedantic", "single line", None, "module_name"), + ]; + let expected = vec![ + Lint::new("ptr_arg", "style", "really long text", None, "module_name") + ]; + assert_eq!(expected, Lint::in_lint_group("style", &lints)); +} diff --git a/clippy_dev/src/main.rs b/clippy_dev/src/main.rs new file mode 100644 index 000000000..7bf6eb012 --- /dev/null +++ b/clippy_dev/src/main.rs @@ -0,0 +1,53 @@ +extern crate clap; +extern crate clippy_dev; +extern crate regex; + +use clap::{App, Arg, SubCommand}; +use clippy_dev::*; + +fn main() { + let matches = App::new("Clippy developer tooling") + .subcommand( + SubCommand::with_name("update_lints") + .about("Update the lint list") + .arg( + Arg::with_name("print-only") + .long("print-only") + .short("p") + .help("Print a table of lints to STDOUT. Does not modify any files."), + ) + ) + .get_matches(); + + if let Some(matches) = matches.subcommand_matches("update_lints") { + if matches.is_present("print-only") { + print_lints(); + } + } +} + +fn print_lints() { + let lint_list = collect_all(); + let print_clippy_lint_groups: [&str; 7] = [ + "correctness", + "style", + "complexity", + "perf", + "pedantic", + "nursery", + "restriction" + ]; + // We could use itertools' group_by to make this much more concise: + for group in &print_clippy_lint_groups { + println!("\n## {}", group); + + let mut group_lints = Lint::in_lint_group(group, &lint_list); + group_lints.sort_by(|a, b| a.name.cmp(&b.name)); + + for lint in group_lints { + if lint.deprecation.is_some() { continue; } + println!("* [{}]({}#{}) ({})", lint.name, clippy_dev::DOCS_LINK.clone(), lint.name, lint.desc); + } + } + println!("there are {} lints", Lint::active_lints(&lint_list).len()); +} diff --git a/util/dev b/util/dev new file mode 100755 index 000000000..4fa6e69b7 --- /dev/null +++ b/util/dev @@ -0,0 +1,3 @@ +#!/bin/sh + +cd clippy_dev && cargo run -- $@ diff --git a/util/update_lints.py b/util/update_lints.py index ea7b992ab..15242abd6 100755 --- a/util/update_lints.py +++ b/util/update_lints.py @@ -7,6 +7,7 @@ import os import re import sys +from subprocess import call declare_deprecated_lint_re = re.compile(r''' declare_deprecated_lint! \s* [{(] \s* @@ -166,19 +167,7 @@ def main(print_only=False, check=False): all_lints += value if print_only: - print_clippy_lint_groups = [ - "correctness", - "style", - "complexity", - "perf", - "pedantic", - "nursery", - "restriction" - ] - for group in print_clippy_lint_groups: - sys.stdout.write('\n## ' + group + '\n') - for (_, name, _, descr) in sorted(clippy_lints[group]): - sys.stdout.write('* [' + name + '](https://rust-lang-nursery.github.io/rust-clippy/master/index.html#' + name + ') (' + descr + ')\n') + call(["./util/dev", "update_lints", "--print-only"]) return # update the lint counter in README.md