Started again with Rails 4

[feedcatcher.git] / vendor / rails / activesupport / lib / active_support / rescuable.rb

diff --git a/vendor/rails/activesupport/lib/active_support/rescuable.rb b/vendor/rails/activesupport/lib/active_support/rescuable.rb
deleted file mode 100644 (file)
index c27c4dd..0000000
--- a/vendor/rails/activesupport/lib/active_support/rescuable.rb
+++ /dev/null
@@ -1,108 +0,0 @@
-module ActiveSupport
-  # Rescuable module adds support for easier exception handling.
-  module Rescuable
-    def self.included(base) # :nodoc:
-      base.class_inheritable_accessor :rescue_handlers
-      base.rescue_handlers = []
-
-      base.extend(ClassMethods)
-    end
-
-    module ClassMethods
-      # Rescue exceptions raised in controller actions.
-      #
-      # <tt>rescue_from</tt> receives a series of exception classes or class
-      # names, and a trailing <tt>:with</tt> option with the name of a method
-      # or a Proc object to be called to handle them. Alternatively a block can
-      # be given.
-      #
-      # Handlers that take one argument will be called with the exception, so
-      # that the exception can be inspected when dealing with it.
-      #
-      # Handlers are inherited. They are searched from right to left, from
-      # bottom to top, and up the hierarchy. The handler of the first class for
-      # which <tt>exception.is_a?(klass)</tt> holds true is the one invoked, if
-      # any.
-      #
-      #   class ApplicationController < ActionController::Base
-      #     rescue_from User::NotAuthorized, :with => :deny_access # self defined exception
-      #     rescue_from ActiveRecord::RecordInvalid, :with => :show_errors
-      #
-      #     rescue_from 'MyAppError::Base' do |exception|
-      #       render :xml => exception, :status => 500
-      #     end
-      #
-      #     protected
-      #       def deny_access
-      #         ...
-      #       end
-      #
-      #       def show_errors(exception)
-      #         exception.record.new_record? ? ...
-      #       end
-      #   end
-      def rescue_from(*klasses, &block)
-        options = klasses.extract_options!
-
-        unless options.has_key?(:with)
-          if block_given?
-            options[:with] = block
-          else
-            raise ArgumentError, "Need a handler. Supply an options hash that has a :with key as the last argument."
-          end
-        end
-
-        klasses.each do |klass|
-          key = if klass.is_a?(Class) && klass <= Exception
-            klass.name
-          elsif klass.is_a?(String)
-            klass
-          else
-            raise ArgumentError, "#{klass} is neither an Exception nor a String"
-          end
-
-          # put the new handler at the end because the list is read in reverse
-          rescue_handlers << [key, options[:with]]
-        end
-      end
-    end
-
-    # Tries to rescue the exception by looking up and calling a registered handler.
-    def rescue_with_handler(exception)
-      if handler = handler_for_rescue(exception)
-        handler.arity != 0 ? handler.call(exception) : handler.call
-        true # don't rely on the return value of the handler
-      end
-    end
-
-    def handler_for_rescue(exception)
-      # We go from right to left because pairs are pushed onto rescue_handlers
-      # as rescue_from declarations are found.
-      _, rescuer = Array(rescue_handlers).reverse.detect do |klass_name, handler|
-        # The purpose of allowing strings in rescue_from is to support the
-        # declaration of handler associations for exception classes whose
-        # definition is yet unknown.
-        #
-        # Since this loop needs the constants it would be inconsistent to
-        # assume they should exist at this point. An early raised exception
-        # could trigger some other handler and the array could include
-        # precisely a string whose corresponding constant has not yet been
-        # seen. This is why we are tolerant to unknown constants.
-        #
-        # Note that this tolerance only matters if the exception was given as
-        # a string, otherwise a NameError will be raised by the interpreter
-        # itself when rescue_from CONSTANT is executed.
-        klass = self.class.const_get(klass_name) rescue nil
-        klass ||= klass_name.constantize rescue nil
-        exception.is_a?(klass) if klass
-      end
-
-      case rescuer
-      when Symbol
-        method(rescuer)
-      when Proc
-        rescuer.bind(self)
-      end
-    end
-  end
-end