1 files changed, 0 insertions, 57 deletions
diff --git a/app/policies/chain.rb b/app/policies/chain.rb
deleted file mode 100644
index 4bf96bd84..000000000
--- a/app/policies/chain.rb
+++ /dev/null
@@ -1,57 +0,0 @@
-module Policies
-  # Implements the `chain_policies` macro as follows
-  #
-  #    chain_policies <method_chain>, policies:
-  #
-  # e.g.
-  #
-  #    chain_policies [:archived?, :!], policies: %i{create? edit?}
-  #
-  # which would establish a precondition `not archived` for the `create?` and `edit?`
-  # method, it is semantically identical to instrumenting both methods
-  # as follows:
-  #    
-  #    def create? # or edit?
-  #       archived?.! && <original code of method>
-  #    end
-  module Chain
-
-    # A local chain store implemented to avoid any possible side effect on client policies.
-    defined_chains = {}
-
-    # Using `define_method` in order to close over `defined_chains`
-    # We need to store the chains because the methods they will apply to
-    # are not defined yet.
-    define_method :chain_policies do |*conditions, policies:|
-      policies.each do | meth_name |
-        # self represents the client Policy
-        defined_chains[[self, meth_name]] = conditions
-      end
-    end
-    # Intercept method definition and check if a policy_chain has been registered for it‥.
-    define_method :method_added do |meth_name, *args, &blk|
-      # Delete potentially registered criteria conditions to‥.
-      # (i) protect against endless recursion via (:merthod_added → :define_method → :method_added → ‥.
-      # (ii) get the condition
-      conditions = defined_chains.delete([self, meth_name])
-      return unless conditions
-
-      instrument_method(meth_name, conditions)
-    end
-
-    private
-
-    # Access to the closure is not necessary anymore, normal metaprogramming can take place :)
-    def instrument_method(meth_name, conditions)
-      orig_method = instance_method(meth_name)
-      # In case of warnings remove original method here, depends on Ruby Version, ok in 2.3.1
-      define_method meth_name do |*a, &b|
-        # Method chain describing the chained policy precondition.
-        conditions.inject(self) do | result, msg |
-          result.send msg
-        end &&
-        orig_method.bind(self).(*a, &b)
-      end
-    end
-  end
-end