Create .pre-commit-config.yml

.gitignore

@@ -9,6 +9,7 @@
 # These are backup files generated by rustfmt
 **/*.rs.bk
 *.pyc
+*.pyz
 /.vscode/
 /.VSCodeCounter/
 /.vs/

.pre-commit-config.yaml

@@ -0,0 +1,9 @@
+repos:
+  - repo: local
+    hooks:
+      - id: rustfmt
+        name: rustfmt
+        description: Check if all files follow the rustfmt style
+        entry: cargo fmt --all
+        language: system
+        pass_filenames: false

compiler/erg_common/config.rs

@@ -4,7 +4,7 @@
 use std::env;
 // use std::env::consts::{ARCH, OS};
 use std::fs::File;
-use std::io::{BufRead, BufReader, Read, stdin};
+use std::io::{stdin, BufRead, BufReader, Read};
 use std::process;
 
 // use crate::lazy::Lazy;

compiler/erg_common/traits.rs

@@ -9,7 +9,7 @@ use std::slice::{Iter, IterMut};
 use std::vec::IntoIter;
 
 use crate::color::{GREEN, RESET};
-use crate::config::{ErgConfig, Input, SEMVER, GIT_HASH_SHORT, BUILD_DATE};
+use crate::config::{ErgConfig, Input, BUILD_DATE, GIT_HASH_SHORT, SEMVER};
 use crate::error::{ErrorDisplay, Location, MultiErrorDisplay};
 use crate::ty::Type;
 use crate::Str;
@@ -311,7 +311,10 @@ pub trait Runnable: Sized {
     fn new(cfg: ErgConfig) -> Self;
     fn input(&self) -> &Input;
     fn start_message(&self) -> String {
-        format!("{} {SEMVER} (tags/?:{GIT_HASH_SHORT}, {BUILD_DATE}) on {ARCH}/{OS}\n", Self::NAME)
+        format!(
+            "{} {SEMVER} (tags/?:{GIT_HASH_SHORT}, {BUILD_DATE}) on {ARCH}/{OS}\n",
+            Self::NAME
+        )
     }
     fn finish(&mut self); // called when the :exit command is received.
     fn clear(&mut self);

compiler/erg_parser/parse.rs

@@ -7,7 +7,7 @@ use std::mem;
 
 use erg_common::color::{GREEN, RED, RESET};
 use erg_common::config::ErgConfig;
-use erg_common::config::{Input};
+use erg_common::config::Input;
 use erg_common::error::Location;
 use erg_common::set::Set;
 use erg_common::traits::Runnable;