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Contents
require 'protobuf/field/integer_field'
module Protobuf
module Field
class EnumField < IntegerField
##
# Class Methods
#
def self.default
fail NoMethodError, "#{self}.#{__method__} must be called on an instance"
end
##
# Public Instance Methods
#
def encode(value)
# original Google's library uses 64bits integer for negative value
::Protobuf::Field::VarintField.encode(value.to_i & 0xffff_ffff_ffff_ffff)
end
def decode(value)
value -= 0x1_0000_0000_0000_0000 if (value & 0x8000_0000_0000_0000).nonzero?
value if acceptable?(value)
end
def acceptable?(val)
!type_class.fetch(val).nil?
end
def enum?
true
end
def coerce!(value)
type_class.fetch(value) || fail(TypeError, "Invalid Enum value: #{value.inspect} for #{name}")
end
private
##
# Private Instance Methods
#
def typed_default_value
if default.is_a?(Symbol)
type_class.const_get(default)
else
type_class.fetch(default) || type_class.enums.first
end
end
end
end
end
Version data entries
14 entries across 14 versions & 1 rubygems