Module: BreezyPDFLite::Util

Included in:
BreezyPDFLite
Defined in:
lib/breezy_pdf_lite/util.rb

Overview

Utility methods

Instance Method Summary collapse

Instance Method Details

#mattr_accessor(*syms, &blk) ⇒ Object 



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# File 'lib/breezy_pdf_lite/util.rb', line 46

def mattr_accessor(*syms, &blk)
  mattr_reader(*syms, &blk)
  mattr_writer(*syms)
end

#mattr_reader(*syms) ⇒ Object 



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# File 'lib/breezy_pdf_lite/util.rb', line 6

def mattr_reader(*syms)
  syms.each do |sym|
    raise NameError, "invalid attribute name: #{sym}" unless /\A[_A-Za-z]\w*\z/.match?(sym)

    class_eval(<<-EOS, __FILE__, __LINE__ + 1)
      @@#{sym} = nil unless defined? @@#{sym}
      def self.#{sym}
        @@#{sym}
      end
    EOS

    class_eval(<<-EOS, __FILE__, __LINE__ + 1)
      def #{sym}
        @@#{sym}
      end
    EOS
    class_variable_set("@@#{sym}", yield) if block_given?
  end
end

#mattr_writer(*syms) ⇒ Object 



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# File 'lib/breezy_pdf_lite/util.rb', line 26

def mattr_writer(*syms)
  syms.each do |sym|
    raise NameError, "invalid attribute name: #{sym}" unless /\A[_A-Za-z]\w*\z/.match?(sym)

    class_eval(<<-EOS, __FILE__, __LINE__ + 1)
      @@#{sym} = nil unless defined? @@#{sym}
      def self.#{sym}=(obj)
        @@#{sym} = obj
      end
    EOS

    class_eval(<<-EOS, __FILE__, __LINE__ + 1)
      def #{sym}=(obj)
        @@#{sym} = obj
      end
    EOS
    send("#{sym}=", yield) if block_given?
  end
end