chore(refactor): minor tweak

Author: ColinEberhardt

assembly/nfa/matcher.ts

@@ -118,7 +118,7 @@ export class CharacterRangeMatcher extends Matcher {
 
   matches(code: u32): bool {
     for (let i = 0, len = this.ranges.length; i < len; i++) {
-      if (code >= u32(this.ranges[i].from) && code <= u32(this.ranges[i].to)) {
+      if (this.ranges[i].contains(code)) {
         return true;
       }
     }

assembly/util.ts

@@ -24,4 +24,8 @@ export class Range {
   offset(value: i32): Range {
     return new Range(this.from + value, this.to + value);
   }
+
+  contains(value: i32): bool {
+    return value >= this.from && value <= this.to;
+  }
 }