bd323b3c99
git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@273 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
57 lines
1.2 KiB
Ruby
57 lines
1.2 KiB
Ruby
# Extends the module object with module and instance accessors for class attributes,
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# just like the native attr* accessors for instance attributes.
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class Module # :nodoc:
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def mattr_reader(*syms)
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syms.each do |sym|
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class_eval <<-EOS
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if ! defined? @@#{sym.id2name}
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@@#{sym.id2name} = nil
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end
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def self.#{sym.id2name}
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@@#{sym}
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end
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def #{sym.id2name}
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@@#{sym}
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end
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def call_#{sym.id2name}
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case @@#{sym.id2name}
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when Symbol then send(@@#{sym})
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when Proc then @@#{sym}.call(self)
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when String then @@#{sym}
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else nil
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end
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end
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EOS
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end
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end
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def mattr_writer(*syms)
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syms.each do |sym|
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class_eval <<-EOS
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if ! defined? @@#{sym.id2name}
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@@#{sym.id2name} = nil
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end
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def self.#{sym.id2name}=(obj)
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@@#{sym.id2name} = obj
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end
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def self.set_#{sym.id2name}(obj)
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@@#{sym.id2name} = obj
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end
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def #{sym.id2name}=(obj)
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@@#{sym} = obj
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end
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EOS
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end
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end
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def mattr_accessor(*syms)
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mattr_reader(*syms)
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mattr_writer(*syms)
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end
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end |