class RDoc::Markup::Attributes
We manage a set of attributes. Each attribute has a symbol name and a bit value.
Attributes
special[R]
The special attribute type. See RDoc::Markup#add_special
Public Class Methods
new()
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Creates a new attributes set.
# File lib/rdoc/markup/attributes.rb, line 15 def initialize @special = 1 @name_to_bitmap = [ [:_SPECIAL_, @special], ] @next_bitmap = @special << 1 end
Public Instance Methods
as_string(bitmap)
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Returns a string representation of bitmap
# File lib/rdoc/markup/attributes.rb, line 45 def as_string bitmap return 'none' if bitmap.zero? res = [] @name_to_bitmap.each do |name, bit| res << name if (bitmap & bit) != 0 end res.join ',' end
bitmap_for(name)
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Returns a unique bit for name
# File lib/rdoc/markup/attributes.rb, line 28 def bitmap_for name bitmap = @name_to_bitmap.assoc name unless bitmap then bitmap = @next_bitmap @next_bitmap <<= 1 @name_to_bitmap << [name, bitmap] else bitmap = bitmap.last end bitmap end
each_name_of(bitmap) { |name| ... }
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yields each attribute name in bitmap
# File lib/rdoc/markup/attributes.rb, line 59 def each_name_of bitmap return enum_for __method__, bitmap unless block_given? @name_to_bitmap.each do |name, bit| next if bit == @special yield name.to_s if (bitmap & bit) != 0 end end