Class: Protocol::Media::Set::Builder

Inherits:
Object
  • Object
show all
Defined in:
lib/protocol/media/set.rb

Overview

Incrementally constructs an immutable media set.

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Builder

Initialize an empty media set builder.



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# File 'lib/protocol/media/set.rb', line 68

def initialize
	@types = {}
end

Instance Method Details

#add(media_range) ⇒ Object Also known as: <<

Add a media range to the set under construction.



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# File 'lib/protocol/media/set.rb', line 75

def add(media_range)
	if @types.instance_of?(Any)
		return self
	end
	
	media_range = Range.for(media_range)
	media_range = Range.build(media_range.type, media_range.subtype)
	type = media_range.type.freeze
	subtype = media_range.subtype.freeze
	
	if type == "*"
		@types = ANY
	elsif subtype == "*"
		@types[type] = ANY
	elsif subtypes = @types[type]
		unless subtypes.instance_of?(Any)
			subtypes.add(subtype)
		end
	else
		@types[type] = ::Set.new([subtype])
	end
	
	return self
end

#build ⇒ Object

Compile the current ranges into an immutable set.



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# File 'lib/protocol/media/set.rb', line 104

def build
	if @types.instance_of?(Any)
		return @types
	end
	
	return Set.new(@types).freeze
end