diff options
Diffstat (limited to 'lib/nickserver/handler_chain.rb')
-rw-r--r-- | lib/nickserver/handler_chain.rb | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/lib/nickserver/handler_chain.rb b/lib/nickserver/handler_chain.rb new file mode 100644 index 0000000..a0eba4d --- /dev/null +++ b/lib/nickserver/handler_chain.rb @@ -0,0 +1,26 @@ +# +# Handler Chain +# +# A chain of handlers that respond to call. Invoking handle(*args) on the chain +# will call the handlers with the given args until one of them returns a result +# that is truethy (i.e. not false or nil). +# +# Extracted from the dispatcher so we can also handle exceptions here in the +# future. +# + +module Nickserver + class HandlerChain + + def initialize(*handlers) + @handlers = handlers + end + + def handle(*args) + result = nil + _handled_by = @handlers.find{|h| result = h.call(*args)} + result + end + + end +end |