X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Fmain.rs;h=6bd4123ddeb45d92917f1dd043fa9d09ecf208de;hb=a9e9b7f9b2ad52035fe7b57bb0fc8ba62d649c33;hp=05e0c58f88d41252ef99ed0b2d537147790e59e4;hpb=265318dba93a3363255a4d8eac9aefd53a05673a;p=rust.git

diff --git a/src/main.rs b/src/main.rs
index 05e0c58f88d..6bd4123ddeb 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,4 +1,12 @@
-use rustc_tools_util::*;
+#![cfg_attr(feature = "deny-warnings", deny(warnings))]
+// warn on lints, that are included in `rust-lang/rust`s bootstrap
+#![warn(rust_2018_idioms, unused_lifetimes)]
+
+use rustc_tools_util::VersionInfo;
+use std::env;
+use std::ffi::OsString;
+use std::path::PathBuf;
+use std::process::{self, Command};
 
 const CARGO_CLIPPY_HELP: &str = r#"Checks a package to catch common mistakes and improve your Rust code.
 
@@ -35,67 +43,115 @@ fn show_version() {
 
 pub fn main() {
     // Check for version and help flags even when invoked as 'cargo-clippy'
-    if std::env::args().any(|a| a == "--help" || a == "-h") {
+    if env::args().any(|a| a == "--help" || a == "-h") {
         show_help();
         return;
     }
 
-    if std::env::args().any(|a| a == "--version" || a == "-V") {
+    if env::args().any(|a| a == "--version" || a == "-V") {
         show_version();
         return;
     }
 
-    if let Err(code) = process(std::env::args().skip(2)) {
-        std::process::exit(code);
+    if let Err(code) = process(env::args().skip(2)) {
+        process::exit(code);
     }
 }
 
-fn process<I>(mut old_args: I) -> Result<(), i32>
-where
-    I: Iterator<Item = String>,
-{
-    let mut args = vec!["check".to_owned()];
+struct ClippyCmd {
+    cargo_subcommand: &'static str,
+    args: Vec<String>,
+    clippy_args: Vec<String>,
+}
+
+impl ClippyCmd {
+    fn new<I>(mut old_args: I) -> Self
+    where
+        I: Iterator<Item = String>,
+    {
+        let mut cargo_subcommand = "check";
+        let mut args = vec![];
+
+        for arg in old_args.by_ref() {
+            match arg.as_str() {
+                "--fix" => {
+                    cargo_subcommand = "fix";
+                    continue;
+                },
+                "--" => break,
+                _ => {},
+            }
+
+            args.push(arg);
+        }
+
+        let mut clippy_args: Vec<String> = old_args.collect();
+        if cargo_subcommand == "fix" && !clippy_args.iter().any(|arg| arg == "--no-deps") {
+            clippy_args.push("--no-deps".into());
+        }
 
-    for arg in old_args.by_ref() {
-        if arg == "--" {
-            break;
+        ClippyCmd {
+            cargo_subcommand,
+            args,
+            clippy_args,
         }
-        args.push(arg);
     }
 
-    let clippy_args: String = old_args.map(|arg| format!("{}__CLIPPY_HACKERY__", arg)).collect();
+    fn path() -> PathBuf {
+        let mut path = env::current_exe()
+            .expect("current executable path invalid")
+            .with_file_name("clippy-driver");
+
+        if cfg!(windows) {
+            path.set_extension("exe");
+        }
 
-    let mut path = std::env::current_exe()
-        .expect("current executable path invalid")
-        .with_file_name("clippy-driver");
-    if cfg!(windows) {
-        path.set_extension("exe");
+        path
     }
 
-    let target_dir = std::env::var_os("CLIPPY_DOGFOOD")
-        .map(|_| {
-            std::env::var_os("CARGO_MANIFEST_DIR").map_or_else(
-                || std::ffi::OsString::from("clippy_dogfood"),
-                |d| {
-                    std::path::PathBuf::from(d)
-                        .join("target")
-                        .join("dogfood")
-                        .into_os_string()
-                },
-            )
-        })
-        .map(|p| ("CARGO_TARGET_DIR", p));
+    fn target_dir() -> Option<(&'static str, OsString)> {
+        env::var_os("CLIPPY_DOGFOOD")
+            .map(|_| {
+                env::var_os("CARGO_MANIFEST_DIR").map_or_else(
+                    || std::ffi::OsString::from("clippy_dogfood"),
+                    |d| {
+                        std::path::PathBuf::from(d)
+                            .join("target")
+                            .join("dogfood")
+                            .into_os_string()
+                    },
+                )
+            })
+            .map(|p| ("CARGO_TARGET_DIR", p))
+    }
 
-    // Don't run the dogfood tests on beta
-    if std::env::var_os("CLIPPY_DOGFOOD").is_some() && cfg!(windows) {
-        return Ok(())
+    fn into_std_cmd(self) -> Command {
+        let mut cmd = Command::new("cargo");
+        let clippy_args: String = self
+            .clippy_args
+            .iter()
+            .map(|arg| format!("{}__CLIPPY_HACKERY__", arg))
+            .collect();
+
+        cmd.env("RUSTC_WORKSPACE_WRAPPER", Self::path())
+            .envs(ClippyCmd::target_dir())
+            .env("CLIPPY_ARGS", clippy_args)
+            .arg(self.cargo_subcommand)
+            .args(&self.args);
+
+        cmd
     }
+}
 
-    let exit_status = std::process::Command::new("cargo")
-        .args(&args)
-        .env("RUSTC_WRAPPER", path)
-        .env("CLIPPY_ARGS", clippy_args)
-        .envs(target_dir)
+fn process<I>(old_args: I) -> Result<(), i32>
+where
+    I: Iterator<Item = String>,
+{
+    let cmd = ClippyCmd::new(old_args);
+
+    let mut cmd = cmd.into_std_cmd();
+
+    let exit_status = cmd
         .spawn()
         .expect("could not run cargo")
         .wait()
@@ -107,3 +163,39 @@ fn process<I>(mut old_args: I) -> Result<(), i32>
         Err(exit_status.code().unwrap_or(-1))
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::ClippyCmd;
+
+    #[test]
+    fn fix() {
+        let args = "cargo clippy --fix".split_whitespace().map(ToString::to_string);
+        let cmd = ClippyCmd::new(args);
+        assert_eq!("fix", cmd.cargo_subcommand);
+        assert!(!cmd.args.iter().any(|arg| arg.ends_with("unstable-options")));
+    }
+
+    #[test]
+    fn fix_implies_no_deps() {
+        let args = "cargo clippy --fix".split_whitespace().map(ToString::to_string);
+        let cmd = ClippyCmd::new(args);
+        assert!(cmd.clippy_args.iter().any(|arg| arg == "--no-deps"));
+    }
+
+    #[test]
+    fn no_deps_not_duplicated_with_fix() {
+        let args = "cargo clippy --fix -- --no-deps"
+            .split_whitespace()
+            .map(ToString::to_string);
+        let cmd = ClippyCmd::new(args);
+        assert_eq!(cmd.clippy_args.iter().filter(|arg| *arg == "--no-deps").count(), 1);
+    }
+
+    #[test]
+    fn check() {
+        let args = "cargo clippy".split_whitespace().map(ToString::to_string);
+        let cmd = ClippyCmd::new(args);
+        assert_eq!("check", cmd.cargo_subcommand);
+    }
+}