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Use native attr_* macros for performance reasons.

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This commit is contained in:
thedarkone
2010-09-26 17:05:54 +02:00
parent 320382ccd3
commit f2e0b3575e
1 changed files with 13 additions and 6 deletions
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19
activesupport/lib/active_support/core_ext/module/attr_internal.rb
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@@ -1,16 +1,12 @@
class Module
# Declares an attribute reader backed by an internally-named instance variable.
def attr_internal_reader(*attrs)
attrs.each do |attr|
module_eval "def #{attr}() #{attr_internal_ivar_name(attr)} end", __FILE__, __LINE__
end
attrs.each {|attr_name| attr_internal_define(attr_name, :reader)}
end
# Declares an attribute writer backed by an internally-named instance variable.
def attr_internal_writer(*attrs)
attrs.each do |attr|
module_eval "def #{attr}=(v) #{attr_internal_ivar_name(attr)} = v end", __FILE__, __LINE__
end
attrs.each {|attr_name| attr_internal_define(attr_name, :writer)}
end
# Declares an attribute reader and writer backed by an internally-named instance
@@ -29,4 +25,15 @@ class Module
def attr_internal_ivar_name(attr)
Module.attr_internal_naming_format % attr
end
def attr_internal_define(attr_name, type)
internal_name = attr_internal_ivar_name(attr_name).sub(/\A@/, '')
class_eval do # class_eval is necessary on 1.9 or else the methods a made private
# use native attr_* methods as they are faster on some Ruby implementations
send("attr_#{type}", internal_name)
end
attr_name, internal_name = "#{attr_name}=", "#{internal_name}=" if type == :writer
alias_method attr_name, internal_name
remove_method internal_name
end
end