error.rb in hexapdf-0.7.0

- old
+ new

@@ -1,12 +1,12 @@
-# -*- encoding: utf-8 -*-
+# -*- encoding: utf-8; frozen_string_literal: true -*-
 #
 #--
 # This file is part of HexaPDF.
 #
 # HexaPDF - A Versatile PDF Creation and Manipulation Library For Ruby
-# Copyright (C) 2014-2017 Thomas Leitner
+# Copyright (C) 2014-2018 Thomas Leitner
 #
 # HexaPDF is free software: you can redistribute it and/or modify it
 # under the terms of the GNU Affero General Public License version 3 as
 # published by the Free Software Foundation with the addition of the
 # following permission added to Section 15 as permitted in Section 7(a):
@@ -40,21 +40,19 @@
   class MalformedPDFError < Error
 
     # The byte position in the PDF file where the error occured.
     attr_reader :pos
 
-    # Creates a new malformed PDF error object for the given exception or exception message.
+    # Creates a new malformed PDF error object for the given exception message.
     #
-    # The byte position where the error occured can be given via the optional +pos+ argument.
-    def initialize(msg_or_error, pos: nil)
-      super(msg_or_error)
-      set_backtrace(msg_or_error.backtrace) if msg_or_error.kind_of?(Exception)
+    # The byte position where the error occured has to be given via the +pos+ argument.
+    def initialize(message, pos:)
+      super(message)
       @pos = pos
     end
 
     def message # :nodoc:
-      pos_msg = @pos.nil? ? '' : " around position #{pos}"
-      "PDF malformed#{pos_msg}: #{super}"
+      "PDF malformed around position #{pos}: #{super}"
     end
 
   end
 
   # Raised when a filter encounters a problem during decoding or encoding.