constants.rb in search_lingo-3.0.0.pre1

- old
+ new

@@ -1,11 +1,24 @@
 # frozen-string-literal: true
 
 module SearchLingo
   ##
   # Pattern for matching modifiers within a token.
-  MODIFIER = /[[:alnum:]]+/
+  MODIFIER = /[[:alnum:]]+/.freeze
 
   ##
-  # Pattern for matching terms within a token.
-  TERM = /"[^"]+"|[[:graph:]]+/
+  # Pattern for matching a simple token.
+  SIMPLE_TOKEN = /"[^"]+"|[[:graph:]]+/.freeze
+
+  ##
+  # Pattern for matching a simple or compound token.
+  SIMPLE_OR_COMPOUND_TOKEN = /(?:#{MODIFIER}:[[:space:]]*)?#{SIMPLE_TOKEN}/.freeze
+
+  ##
+  # Pattern for matching a simple or compound token, with regex grouping to aid
+  # in decomposing the token into its modifier and term components.
+  SIMPLE_OR_COMPOUND_TOKEN_WITH_GROUPING = /\A(?:(#{MODIFIER}):[[:space:]]*)?(#{SIMPLE_TOKEN})\z/.freeze
+
+  ##
+  # Pattern for matching the delimiter between tokens.
+  DELIMITER = /[[:space:]]*/.freeze
 end