Module: Flipper::Typecast

Defined in:
lib/flipper/typecast.rb

Constant Summary collapse

TruthMap = 
{
  true    => true,
  1       => true,
  'true'  => true,
  '1'     => true,
}.freeze

Class Method Summary collapse

Class Method Details

.to_boolean(value) ⇒ Object

Internal: Convert value to a boolean.

Returns true or false.



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# File 'lib/flipper/typecast.rb', line 13

def self.to_boolean(value)
  !!TruthMap[value]
end

.to_float(value) ⇒ Object

Internal: Convert value to a float.

Returns a Float representation of the value. Raises ArgumentError if conversion is not possible.



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# File 'lib/flipper/typecast.rb', line 33

def self.to_float(value)
  if value.respond_to?(:to_f)
    value.to_f
  else
    raise ArgumentError, "#{value.inspect} cannot be converted to a float"
  end
end

.to_integer(value) ⇒ Object

Internal: Convert value to an integer.

Returns an Integer representation of the value. Raises ArgumentError if conversion is not possible.



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# File 'lib/flipper/typecast.rb', line 21

def self.to_integer(value)
  if value.respond_to?(:to_i)
    value.to_i
  else
    raise ArgumentError, "#{value.inspect} cannot be converted to an integer"
  end
end

.to_percentage(value) ⇒ Object

Internal: Convert value to a percentage.

Returns a Integer or Float representation of the value. Raises ArgumentError if conversion is not possible.



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# File 'lib/flipper/typecast.rb', line 45

def self.to_percentage(value)
  if value.to_s.include?('.'.freeze)
    to_float(value)
  else
    to_integer(value)
  end
end

.to_set(value) ⇒ Object

Internal: Convert value to a set.

Returns a Set representation of the value. Raises ArgumentError if conversion is not possible.



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# File 'lib/flipper/typecast.rb', line 57

def self.to_set(value)
  return value if value.is_a?(Set)
  return Set.new if value.nil? || value.empty?

  if value.respond_to?(:to_set)
    value.to_set
  else
    raise ArgumentError, "#{value.inspect} cannot be converted to a set"
  end
end