class Range
Extensions to Range
needed to support flex array.
Public Instance Methods
to_index_range(spec)
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Convert this range to an range index against the spec.
# File lib/flex_array/range.rb, line 18 def to_index_range(spec) self_min, self_max, spec_max = self.begin, self.end, spec.max self_max -= 1 if self_max > 0 && self.exclude_end? self_min = spec_max + self_min + 1 if self_min < 0 self_max = spec_max + self_max + 1 if self_max < 0 if spec === self_min && spec === self_max && self_min < self_max self_min..self_max else fail IndexError, "Subscript out of range: #{self.inspect}" end end
to_spec_component(stride)
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Convert this integer to a limits component.
# File lib/flex_array/range.rb, line 5 def to_spec_component(stride) min = self.min if self == (0...0) SpecComponent.new(0...0, stride) elsif !self.none? && min.is_a?(Integer) && (min >= 0) && self.max.is_a?(Integer) SpecComponent.new(self, stride) else fail ArgumentError, "Invalid flex array dimension: #{self.inspect}" end end