class TJSON::DataType::Set

TJSON sets

Public Class Methods

identify_type(array) click to toggle source

Determine the type of a Ruby array (for serialization)

# File lib/tjson/datatype/set.rb, line 8
def self.identify_type(array)
  inner_type = nil

  array.each do |elem|
    t = TJSON::DataType.identify_type(elem)
    inner_type ||= t
    raise TJSON::TypeError, "set contains heterogenous types: #{array.inspect}" unless inner_type == t
  end

  new(inner_type)
end

Public Instance Methods

decode(array) click to toggle source
# File lib/tjson/datatype/set.rb, line 24
def decode(array)
  raise TJSON::TypeError, "expected Array, got #{array.class}" unless array.is_a?(::Array)

  if @inner_type
    result = ::Set.new(array.map { |o| @inner_type.decode(o) })
    raise TJSON::ParseError, "set contains duplicate items" if result.size < array.size
    return result
  end

  return ::Set.new if array.empty?
  raise TJSON::ParseError, "no inner type specified for non-empty set: #{array.inspect}"
end
encode(set) click to toggle source
# File lib/tjson/datatype/set.rb, line 37
def encode(set)
  set.map { |o| TJSON::DataType.generate(o) }
end
tag() click to toggle source
# File lib/tjson/datatype/set.rb, line 20
def tag
  "S<#{@inner_type.tag}>"
end