error.rb in http-2-1.0.0

- old
+ new

@@ -1,12 +1,29 @@
 # frozen_string_literal: true
 
 module HTTP2
   # Stream, connection, and compressor exceptions.
   module Error
-    class Error < StandardError; end
+    @types = {}
 
+    class << self
+      attr_reader :types
+    end
+
+    class Error < StandardError
+      def self.inherited(klass)
+        super
+
+        type = klass.name or return
+
+        type = type.split("::").last or return
+
+        type = type.gsub(/([^\^])([A-Z])/, '\1_\2').downcase.to_sym
+        HTTP2::Error.types[type] = klass
+      end
+    end
+
     # Raised if connection header is missing or invalid indicating that
     # this is an invalid HTTP 2.0 request - no frames are emitted and the
     # connection must be aborted.
     class HandshakeError < Error; end
 
@@ -40,7 +57,11 @@
     # cannot be opened.
     class ConnectionClosed < Error; end
 
     # Raised if stream limit has been reached and new stream cannot be opened.
     class StreamLimitExceeded < Error; end
+
+    class FrameSizeError < Error; end
+
+    @types.freeze
   end
 end