Helper class for representing a D-Bus type.
Create a new type instance for type number sigtype.
# File lib/dbus/type.rb, line 58 def initialize(sigtype) if not TypeMapping.keys.member?(sigtype) raise SignatureException, "Unknown key in signature: #{sigtype.chr}" end @sigtype = sigtype @members = Array.new end
Add a new member type a.
# File lib/dbus/type.rb, line 90 def <<(a) if not [STRUCT, ARRAY, DICT_ENTRY].member?(@sigtype) raise SignatureException end raise SignatureException if @sigtype == ARRAY and @members.size > 0 if @sigtype == DICT_ENTRY if @members.size == 2 raise SignatureException, "Dict entries have exactly two members" end if @members.size == 0 if [STRUCT, ARRAY, DICT_ENTRY].member?(a.sigtype) raise SignatureException, "Dict entry keys must be basic types" end end end @members << a end
Return the required alignment for the type.
# File lib/dbus/type.rb, line 67 def alignment TypeMapping[@sigtype].last end
Return the first contained member type.
# File lib/dbus/type.rb, line 109 def child @members[0] end
# File lib/dbus/type.rb, line 113 def inspect s = TypeMapping[@sigtype].first if [STRUCT, ARRAY].member?(@sigtype) s += ": " + @members.inspect end s end
Return a string representation of the type according to the D-Bus specification.
# File lib/dbus/type.rb, line 73 def to_s case @sigtype when STRUCT "(" + @members.collect { |t| t.to_s }.join + ")" when ARRAY "a" + child.to_s when DICT_ENTRY "{" + @members.collect { |t| t.to_s }.join + "}" else if not TypeMapping.keys.member?(@sigtype) raise NotImplementedError end @sigtype.chr end end
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