Class: Aequitas::Rule::Numericalness::NonInteger

Inherits:
Aequitas::Rule show all
Includes:
Aequitas::Rule::Numericalness
Defined in:
lib/aequitas/rule/numericalness/non_integer.rb

Instance Attribute Summary collapse

Attributes inherited from Aequitas::Rule

#attribute_name, #custom_message, #guard, #skip_condition

Attributes included from Equalizable

#equalizer

Instance Method Summary collapse

Methods included from Aequitas::Rule::Numericalness

included, rules_for, scour_options_of_keys, #valid?

Methods inherited from Aequitas::Rule

#attribute_value, #execute?, rules_for, #skip?, #validate, #violation_data, #violation_info, #violation_values

Methods included from Equalizable

#equalize_on

Constructor Details

#initialize(attribute_name, options) ⇒ NonInteger

Returns a new instance of NonInteger.



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# File 'lib/aequitas/rule/numericalness/non_integer.rb', line 15

def initialize(attribute_name, options)
  super

  @precision = options.fetch(:precision, nil)
  @scale     = options.fetch(:scale,     nil)

  unless expected # validate precision and scale attrs
    raise ArgumentError, "Invalid precision #{precision.inspect} and scale #{scale.inspect} for #{attribute_name}"
  end
end

Instance Attribute Details

#precision ⇒ Object (readonly)

Returns the value of attribute precision.



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# File 'lib/aequitas/rule/numericalness/non_integer.rb', line 12

def precision
  @precision
end

#scale ⇒ Object (readonly)

Returns the value of attribute scale.



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# File 'lib/aequitas/rule/numericalness/non_integer.rb', line 13

def scale
  @scale
end

Instance Method Details

#expected(precision = @precision, scale = @scale) ⇒ Object 



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# File 'lib/aequitas/rule/numericalness/non_integer.rb', line 26

def expected(precision = @precision, scale = @scale)
  if precision && scale
    if precision > scale && scale == 0
      /\A[+-]?(?:\d{1,#{precision}}(?:\.0)?)\z/
    elsif precision > scale
      delta = precision - scale
      /\A[+-]?(?:\d{1,#{delta}}|\d{0,#{delta}}\.\d{1,#{scale}})\z/
    elsif precision == scale
      /\A[+-]?(?:0(?:\.\d{1,#{scale}})?)\z/
    else
      nil
    end
  else
    /\A[+-]?(?:\d+|\d*\.\d+)\z/
  end
end

#valid_numericalness?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/aequitas/rule/numericalness/non_integer.rb', line 43

def valid_numericalness?(value)
  # XXX: workaround for jruby. This is needed because the jruby
  # compiler optimizes a bit too far with magic variables like $~.
  # the value.send line sends $~. Inserting this line makes sure the
  # jruby compiler does not optimise here.
  # see http://jira.codehaus.org/browse/JRUBY-3765
  $~ = nil if RUBY_PLATFORM[/java/]

  value_as_string(value) =~ expected
rescue ArgumentError
  # TODO: figure out better solution for: can't compare String with Integer
  true
end

#violation_type(resource) ⇒ Object 



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# File 'lib/aequitas/rule/numericalness/non_integer.rb', line 57

def violation_type(resource)
  :not_a_number
end