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module Concurrent
module Utility
# @private
module NativeInteger
# http://stackoverflow.com/questions/535721/ruby-max-integer
MIN_VALUE = -(2**(0.size * 8 - 2))
MAX_VALUE = (2**(0.size * 8 - 2) - 1)
def ensure_upper_bound(value)
if value > MAX_VALUE
raise RangeError.new("#{value} is greater than the maximum value of #{MAX_VALUE}")
end
value
end
def ensure_lower_bound(value)
if value < MIN_VALUE
raise RangeError.new("#{value} is less than the maximum value of #{MIN_VALUE}")
end
value
end
def ensure_integer(value)
unless value.is_a?(Integer)
raise ArgumentError.new("#{value} is not an Integer")
end
value
end
def ensure_integer_and_bounds(value)
ensure_integer value
ensure_upper_bound value
ensure_lower_bound value
end
def ensure_positive(value)
if value < 0
raise ArgumentError.new("#{value} cannot be negative")
end
value
end
def ensure_positive_and_no_zero(value)
if value < 1
raise ArgumentError.new("#{value} cannot be negative or zero")
end
value
end
extend self
end
end
end
|
