misc: Apply clippy suggestions

Author: Luni-4

src/colorize.rs

@@ -44,7 +44,7 @@ where
                         );
                         continue;
                     }
-                    subcolorize(Some(&subkey), subvalue, output, color, subindent);
+                    subcolorize(Some(subkey), subvalue, output, color, subindent);
                 }
                 output(color, &format!("{}}}", indent));
             }

src/diff.rs

@@ -43,11 +43,7 @@ impl JsonDiff {
     /// returns it as a formatted string.
     pub fn diff_string(json1: &Value, json2: &Value, keys_only: bool) -> Option<String> {
         let Self { score: _, diff } = Self::diff(json1, json2, keys_only);
-        if let Some(value) = diff {
-            Some(colorize_to_array(&value).join("\n") + "\n")
-        } else {
-            None
-        }
+        diff.map(|value| colorize_to_array(&value).join("\n") + "\n")
     }
 
     fn object_diff(obj1: &Map<String, Value>, obj2: &Map<String, Value>, keys_only: bool) -> Self {
@@ -76,11 +72,11 @@ impl JsonDiff {
                 let Self {
                     score: subscore,
                     diff: change,
-                } = Self::diff_with_score(&value1, &value2, keys_only);
+                } = Self::diff_with_score(value1, value2, keys_only);
                 if let Some(change) = change {
                     result.insert(key.clone(), change);
                 }
-                score += ((subscore / 5.).max(-10.)).min(20.);
+                score += (subscore / 5.).clamp(-10., 20.);
             }
         }
 
@@ -117,7 +113,7 @@ impl JsonDiff {
 
         for (match_index, (key, candidate)) in fuzzy_originals.into_iter().enumerate() {
             if key != "__next" {
-                let index_distance = (match_index as isize - index as isize).abs() as usize;
+                let index_distance = (match_index as isize - index as isize).unsigned_abs();
                 if Self::check_type(item, candidate) {
                     let Self { score, diff: _ } = Self::diff(item, candidate, false);
                     if best_match.as_ref().map_or(true, |v| score > v.score)