lib/services/string_builder.rb in kilya-0.0.8 vs lib/services/string_builder.rb in kilya-0.0.9

@@ -1,7 +1,38 @@
+# frozen_string_literal: true
+
+# (The MIT License)
+#
+# Copyright (c) 2019-2021 Kondratev Ilya
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the 'Software'), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
 module Services
   module StringBuilder
+    class StringBuilderError < StandardError; end
+
+    # @param [String] line
+    # @return [String]
+    # @raise [StringBuilderError]
     def reverse(line)
       line.nil? ? "nothing to reverse" : line.reverse!
+    rescue StandardError => e
+      StringBuilderError.new(e.message)
     end
   end
-end
\ No newline at end of file
+end