Rename to propane

lib/propane/token.rb

@@ -0,0 +1,42 @@
+class Propane
+
+  class Token
+
+    # @return [String]
+    #   Token name.
+    attr_reader :name
+
+    # @return [String]
+    #   Token pattern.
+    attr_reader :pattern
+
+    # @return [Integer]
+    #   Token ID.
+    attr_reader :id
+
+    # @return [Regex::NFA]
+    #   Regex NFA for matching the token.
+    attr_reader :nfa
+
+    def initialize(name, pattern, id)
+      @name = name
+      @pattern = pattern
+      @id = id
+      unless pattern.nil?
+        regex = Regex.new(pattern)
+        regex.nfa.end_state.accepts = self
+        @nfa = regex.nfa
+      end
+    end
+
+    def c_name
+      @name.upcase
+    end
+
+    def to_s
+      @name
+    end
+
+  end
+
+end