Re-ordering lexer rules for fewer regex matches / slightly faster lexing.

lib/lexer.js

@@ -77,30 +77,30 @@
       if (this.identifierToken()) {
         return null;
       }
-      if (this.numberToken()) {
-        return null;
-      }
-      if (this.heredocToken()) {
-        return null;
-      }
-      if (this.regexToken()) {
-        return null;
-      }
       if (this.commentToken()) {
         return null;
       }
-      if (this.lineToken()) {
-        return null;
-      }
       if (this.whitespaceToken()) {
         return null;
       }
-      if (this.jsToken()) {
+      if (this.lineToken()) {
+        return null;
+      }
+      if (this.heredocToken()) {
         return null;
       }
       if (this.stringToken()) {
         return null;
       }
+      if (this.numberToken()) {
+        return null;
+      }
+      if (this.regexToken()) {
+        return null;
+      }
+      if (this.jsToken()) {
+        return null;
+      }
       return this.literalToken();
     };
     // Tokenizers

src/lexer.coffee

@@ -61,14 +61,14 @@ exports.Lexer: class Lexer
   # `@literalToken` is the fallback catch-all.
   extractNextToken: ->
     return if @identifierToken()
-    return if @numberToken()
-    return if @heredocToken()
-    return if @regexToken()
     return if @commentToken()
-    return if @lineToken()
     return if @whitespaceToken()
-    return if @jsToken()
+    return if @lineToken()
+    return if @heredocToken()
     return if @stringToken()
+    return if @numberToken()
+    return if @regexToken()
+    return if @jsToken()
     return    @literalToken()
 
   # Tokenizers