Class: SpecArray

Inherits:
Array show all
Defined in:
lib/flex_array/spec_array.rb

Overview

This helper class encapsulates an array of flex array spec components.

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Array

#array_data, #array_specs, #limits, #to_flex_array, #to_index_range

Constructor Details

#initialize(array_specs) ⇒ SpecArray

Create a flex array specification.



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# File 'lib/flex_array/spec_array.rb', line 11

def initialize(array_specs)
  super(0)
  @spec_count = 1

  #Parse the array limits.

  array_specs.reverse_each do |spec|
    self.insert(0, spec.to_spec_component(@spec_count))
    @spec_count *= self[0].span
  end

  self
end

Instance Attribute Details

#spec_count ⇒ Object (readonly)

The number of elements defined by this array specification.



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# File 'lib/flex_array/spec_array.rb', line 5

def spec_count
  @spec_count
end

Instance Method Details

#enlarge(growth) ⇒ Object

Enlarge the flex array along its first dimension.



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# File 'lib/flex_array/spec_array.rb', line 37

def enlarge(growth)
  self[0].enlarge(growth)

  #Compute the new size.

  @spec_count = self.inject(1) {|product, element| product*element.span}
end

#transposed? ⇒ Boolean

Is this array specification transposed in any way?



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# File 'lib/flex_array/spec_array.rb', line 25

def transposed?
  check = 1

  self.reverse_each do |component|
    return true unless check == component.stride
    check *= component.span
  end

  false
end