ci: Add job to check code formatting (#65)

.github/workflows/ci.yml

@@ -27,6 +27,19 @@ jobs:
         with:
           command: clippy
           args: --all-features
+  rustfmt:
+    runs-on: ubuntu-latest
+    env:
+      RUSTFLAGS: "-Dwarnings"
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+      - uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --check
   test:
     runs-on: ubuntu-latest
     steps:

bin/src/control.rs

@@ -1,6 +1,7 @@
 use std::{
     error::Error,
-    fmt::{self, Display}, time::Instant,
+    fmt::{self, Display},
+    time::Instant,
 };
 
 use matching::MatchingEntry;
@@ -79,17 +80,26 @@ pub fn run_tool_on_merge_scenario(
     let start = Instant::now();
     log::info!("Started calculation of matchings between left and base");
     let matchings_left_base = matching::calculate_matchings(&left_tree, &base_tree);
-    log::info!("Finished calculation of matchings between left and base in {:?}", start.elapsed());
+    log::info!(
+        "Finished calculation of matchings between left and base in {:?}",
+        start.elapsed()
+    );
 
     let start = Instant::now();
     log::info!("Started calculation of matchings between right and base");
     let matchings_right_base = matching::calculate_matchings(&right_tree, &base_tree);
-    log::info!("Finished calculation of matchings between right and base in {:?}", start.elapsed());
+    log::info!(
+        "Finished calculation of matchings between right and base in {:?}",
+        start.elapsed()
+    );
 
     let start = Instant::now();
     log::info!("Started calculation of matchings between left and right");
     let matchings_left_right = matching::calculate_matchings(&left_tree, &right_tree);
-    log::info!("Finished calculation of matchings between left and right in {:?}", start.elapsed());
+    log::info!(
+        "Finished calculation of matchings between left and right in {:?}",
+        start.elapsed()
+    );
 
     let start = Instant::now();
     log::info!("Starting merge of the trees");

merge/src/merge_terminals.rs

@@ -8,7 +8,7 @@ pub fn merge_terminals<'a>(
     right: &'a Terminal<'a>,
 ) -> Result<MergedCSTNode<'a>, MergeError> {
     log::trace!("Calling merge terminal");
-    
+
     // Nodes of different kind, early return
     if left.kind != right.kind {
         return Err(MergeError::NodesWithDifferentKinds(