Define modules in lib.rs instead of main.rs

clippy_dev/src/fmt.rs

@@ -1,4 +1,4 @@
-use clippy_dev::clippy_project_root;
+use crate::clippy_project_root;
 use shell_escape::escape;
 use std::ffi::OsStr;
 use std::io;

clippy_dev/src/lib.rs

@@ -9,6 +9,11 @@ use std::fs;
 use std::path::{Path, PathBuf};
 use walkdir::WalkDir;
 
+pub mod fmt;
+pub mod new_lint;
+pub mod stderr_length_check;
+pub mod update_lints;
+
 lazy_static! {
     static ref DEC_CLIPPY_LINT_RE: Regex = Regex::new(
         r#"(?x)

clippy_dev/src/main.rs

@@ -7,9 +7,7 @@ use clippy_dev::{
 };
 use std::path::Path;
 
-mod fmt;
+use clippy_dev::{fmt, new_lint, stderr_length_check};
-mod new_lint;
-mod stderr_length_check;
 
 #[derive(Clone, Copy, PartialEq)]
 enum UpdateMode {

clippy_dev/src/new_lint.rs

@@ -1,10 +1,15 @@
-use clippy_dev::clippy_project_root;
+use crate::clippy_project_root;
 use std::fs::{File, OpenOptions};
 use std::io;
 use std::io::prelude::*;
 use std::io::ErrorKind;
 use std::path::Path;
 
+/// Creates files required to implement and test a new lint and runs `update_lints`.
+///
+/// # Errors
+///
+/// This function errors, if the files couldn't be created
 pub fn create(pass: Option<&str>, lint_name: Option<&str>, category: Option<&str>) -> Result<(), io::Error> {
     let pass = pass.expect("`pass` argument is validated by clap");
     let lint_name = lint_name.expect("`name` argument is validated by clap");

clippy_dev/src/stderr_length_check.rs

@@ -1,11 +1,9 @@
+use crate::clippy_project_root;
 use std::ffi::OsStr;
 use std::fs;
 use std::path::{Path, PathBuf};
-
 use walkdir::WalkDir;
 
-use clippy_dev::clippy_project_root;
-
 // The maximum length allowed for stderr files.
 //
 // We limit this because small files are easier to deal with than bigger files.