class Etherlite::Types::Integer

Public Class Methods

new(_signed, _size) click to toggle source
# File lib/etherlite/types/integer.rb, line 3
def initialize(_signed, _size)
  unless 0 < _size && _size <= 256 && _size % 8 == 0
    raise ArgumentError, "invalid integer size #{_size}"
  end

  @signed = _signed
  @size = _size
end

Public Instance Methods

decode(_connection, _value) click to toggle source
# File lib/etherlite/types/integer.rb, line 28
def decode(_connection, _value)
  @signed ? Etherlite::Utils.hex_to_int(_value) : Etherlite::Utils.hex_to_uint(_value)
end
encode(_value) click to toggle source
# File lib/etherlite/types/integer.rb, line 20
def encode(_value)
  raise ArgumentError, "expected a number for #{signature}" unless _value.is_a? ::Integer
  raise ArgumentError, "expected a positive number for #{signature}" if !@signed && _value < 0
  raise ArgumentError, "value out of bounds #{_value}" if _value.abs > maximum

  @signed ? Etherlite::Utils.int_to_hex(_value) : Etherlite::Utils.uint_to_hex(_value)
end
signature() click to toggle source
# File lib/etherlite/types/integer.rb, line 12
def signature
  "#{@signed ? 'int' : 'uint'}#{@size}"
end
size() click to toggle source
# File lib/etherlite/types/integer.rb, line 16
def size
  32
end

Private Instance Methods

maximum() click to toggle source
# File lib/etherlite/types/integer.rb, line 34
def maximum
  2**(@signed ? @size - 1 : @size)
end