diff options
Diffstat (limited to 'lib/hashie/extensions/mash/define_accessors.rb')
-rw-r--r-- | lib/hashie/extensions/mash/define_accessors.rb | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/lib/hashie/extensions/mash/define_accessors.rb b/lib/hashie/extensions/mash/define_accessors.rb new file mode 100644 index 0000000..f13ea2e --- /dev/null +++ b/lib/hashie/extensions/mash/define_accessors.rb @@ -0,0 +1,90 @@ +module Hashie + module Extensions + module Mash + module DefineAccessors + def self.included(klass) + klass.class_eval do + mod = Ext.new + include mod + end + end + + def self.extended(obj) + included(obj.singleton_class) + end + + class Ext < Module + def initialize + mod = self + define_method(:method_missing) do |method_name, *args, &block| + key, suffix = method_name_and_suffix(method_name) + case suffix + when '='.freeze + mod.define_writer(key, method_name) + when '?'.freeze + mod.define_predicate(key, method_name) + when '!'.freeze + mod.define_initializing_reader(key, method_name) + when '_'.freeze + mod.define_underbang_reader(key, method_name) + else + mod.define_reader(key, method_name) + end + send(method_name, *args, &block) + end + end + + def define_reader(key, method_name) + define_method(method_name) do |&block| + if key? method_name + self.[](method_name, &block) + else + self.[](key, &block) + end + end + end + + def define_writer(key, method_name) + define_method(method_name) do |value = nil| + if key? method_name + self.[](method_name, &proc) + else + assign_property(key, value) + end + end + end + + def define_predicate(key, method_name) + define_method(method_name) do + if key? method_name + self.[](method_name, &proc) + else + !!self[key] + end + end + end + + def define_initializing_reader(key, method_name) + define_method(method_name) do + if key? method_name + self.[](method_name, &proc) + else + initializing_reader(key) + end + end + end + + def define_underbang_reader(key, method_name) + define_method(method_name) do + if key? method_name + self.[](key, &proc) + else + underbang_reader(key) + end + end + end + end + end + end + end +end |