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author | Yehuda Katz <wycats@yehuda-katzs-macbookpro41.local> | 2009-06-02 21:41:31 -0700 |
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committer | Yehuda Katz <wycats@yehuda-katzs-macbookpro41.local> | 2009-06-02 21:41:31 -0700 |
commit | 1126a85aed576402d978e6f76eb393b6baaa9541 (patch) | |
tree | ab98097c1b6b80730941c8589dc8eb48847f0339 /activesupport/lib | |
parent | 971e2438d98326c994ec6d3ef8e37b7e868ed6e2 (diff) | |
download | rails-1126a85aed576402d978e6f76eb393b6baaa9541.tar.gz rails-1126a85aed576402d978e6f76eb393b6baaa9541.tar.bz2 rails-1126a85aed576402d978e6f76eb393b6baaa9541.zip |
Further cleaning up new callbacks
Diffstat (limited to 'activesupport/lib')
-rw-r--r-- | activesupport/lib/active_support/new_callbacks.rb | 118 |
1 files changed, 49 insertions, 69 deletions
diff --git a/activesupport/lib/active_support/new_callbacks.rb b/activesupport/lib/active_support/new_callbacks.rb index 86cf5c01a8..6023fc1170 100644 --- a/activesupport/lib/active_support/new_callbacks.rb +++ b/activesupport/lib/active_support/new_callbacks.rb @@ -91,9 +91,8 @@ module ActiveSupport @@_callback_sequence = 0 attr_accessor :filter, :kind, :name, :options, :per_key, :klass - def initialize(filter, kind, options, klass, name) + def initialize(filter, kind, options, klass) @kind, @klass = kind, klass - @name = name normalize_options!(options) @@ -131,9 +130,8 @@ module ActiveSupport @@_callback_sequence += 1 end - def matches?(_kind, _name, _filter) + def matches?(_kind, _filter) @kind == _kind && - @name == _name && @filter == _filter end @@ -310,40 +308,35 @@ module ActiveSupport RUBY_EVAL method_name else - kind, name = @kind, @name + kind = @kind @klass.send(:define_method, "#{method_name}_object") { filter } - if kind == :around - @klass.class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1 - def #{method_name}(&blk) - if :#{kind} == :around && #{method_name}_object.respond_to?(:filter) - #{method_name}_object.send("filter", self, &blk) - # TODO: Deprecate this - elsif #{method_name}_object.respond_to?(:before) && #{method_name}_object.respond_to?(:after) - should_continue = #{method_name}_object.before(self) - yield if should_continue - #{method_name}_object.after(self) - else - #{method_name}_object.send("#{kind}_#{name}", self, &blk) - end - end - RUBY_EVAL - else - @klass.class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1 - def #{method_name}(&blk) - if #{method_name}_object.respond_to?(:#{kind}) - #{method_name}_object.#{kind}(self, &blk) - elsif #{method_name}_object.respond_to?(:filter) - #{method_name}_object.send("filter", self, &blk) - else - #{method_name}_object.send("#{kind}_#{name}", self, &blk) - end - end - RUBY_EVAL - end + _normalize_legacy_filter(kind, filter) + + @klass.class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1 + def #{method_name}(&blk) + #{method_name}_object.send(:#{kind}, self, &blk) + end + RUBY_EVAL + method_name end end + + def _normalize_legacy_filter(kind, filter) + if !filter.respond_to?(kind) && filter.respond_to?(:filter) + filter.metaclass.class_eval( + "def #{kind}(context, &block) filter(context, &block) end", + __FILE__, __LINE__ - 1) + elsif filter.respond_to?(:before) && filter.respond_to?(:after) && kind == :around + def filter.around(context) + should_continue = before(context) + yield if should_continue + after(context) + end + end + end + end # An Array with a compile method @@ -385,22 +378,19 @@ module ActiveSupport # The _run_save_callbacks method can optionally take a key, which # will be used to compile an optimized callback method for each # key. See #define_callbacks for more information. - def _define_runner(symbol, callbacks, options) + def _define_runner(symbol, callbacks) body = callbacks.compile(nil, :terminator => send("_#{symbol}_terminator")) - body = <<-RUBY_EVAL - def _run_#{symbol}_callbacks(key = nil) + body, line = <<-RUBY_EVAL, __LINE__ + def _run_#{symbol}_callbacks(key = nil, &blk) if key - key = key.hash.to_s.gsub(/-/, '_') - name = "_run__\#{self.class.name.split("::").last}__#{symbol}__\#{key}__callbacks" + name = "_run__\#{self.class.name.hash.abs}__#{symbol}__\#{key.hash.abs}__callbacks" - if respond_to?(name) - send(name) { yield if block_given? } - else - self.class._create_and_run_keyed_callback( - self.class.name.split("::").last, - :#{symbol}, key, self) { yield if block_given? } + unless respond_to?(name) + self.class._create_keyed_callback(name, :#{symbol}, self, &blk) end + + send(name, &blk) else #{body} end @@ -408,30 +398,22 @@ module ActiveSupport RUBY_EVAL undef_method "_run_#{symbol}_callbacks" if method_defined?("_run_#{symbol}_callbacks") - class_eval body, __FILE__, __LINE__ - - before_name, around_name, after_name = - options.values_at(:before, :after, :around) + class_eval body, __FILE__, line end # This is called the first time a callback is called with a particular # key. It creates a new callback method for the key, calculating # which callbacks can be omitted because of per_key conditions. - def _create_and_run_keyed_callback(klass, kind, key, obj, &blk) + def _create_keyed_callback(name, kind, obj, &blk) @_keyed_callbacks ||= {} - @_keyed_callbacks[[kind, key]] ||= begin - str = self.send("_#{kind}_callbacks").compile(key, :object => obj, :terminator => self.send("_#{kind}_terminator")) + @_keyed_callbacks[name] ||= begin + str = send("_#{kind}_callbacks"). + compile(name, :object => obj, :terminator => send("_#{kind}_terminator")) - self.class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1 - def _run__#{klass.split("::").last}__#{kind}__#{key}__callbacks - #{str} - end - RUBY_EVAL + class_eval "def #{name}() #{str} end", __FILE__, __LINE__ true end - - obj.send("_run__#{klass.split("::").last}__#{kind}__#{key}__callbacks", &blk) end # Define callbacks. @@ -473,32 +455,30 @@ module ActiveSupport callbacks = send("_#{name}_callbacks") yield callbacks, type, filters, options if block_given? - _define_runner(name, callbacks, options) + _define_runner(name, callbacks) end - def _set_callback(name, *filters, &block) + def set_callback(name, *filters, &block) _update_callbacks(name, filters, block) do |callbacks, type, filters, options| filters.map! do |filter| # overrides parent class - callbacks.delete_if do |c| - c.matches?(type, name, filter) - end - Callback.new(filter, type, options.dup, self, name) + callbacks.delete_if {|c| c.matches?(type, filter) } + Callback.new(filter, type, options.dup, self) end options[:prepend] ? callbacks.unshift(*filters) : callbacks.push(*filters) end end - def _skip_callback(name, *filters, &block) + def skip_callback(name, *filters, &block) _update_callbacks(name, filters, block) do |callbacks, type, filters, options| filters.each do |filter| callbacks = send("_#{name}_callbacks=", callbacks.clone(self)) - filter = callbacks.find {|c| c.matches?(type, name, filter) } - per_key = options[:per_key] || {} + filter = callbacks.find {|c| c.matches?(type, filter) } + if filter && options.any? - filter.recompile!(options, per_key) + filter.recompile!(options, options[:per_key] || {}) else callbacks.delete(filter) end @@ -520,7 +500,7 @@ module ActiveSupport _update_callbacks(:#{symbol}) end - self._set_callback(:#{symbol}, :before) + self.set_callback(:#{symbol}, :before) RUBY_EVAL end end |