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require 'set'
module Flipper
module Typecast
TruthMap = {
true => true,
1 => true,
'true' => true,
'1' => true,
}.freeze
# Internal: Convert value to a boolean.
#
# Returns true or false.
def self.to_boolean(value)
!!TruthMap[value]
end
# Internal: Convert value to an integer.
#
# Returns an Integer representation of the value.
# Raises ArgumentError if conversion is not possible.
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
# Internal: Convert value to a float.
#
# Returns a Float representation of the value.
# Raises ArgumentError if conversion is not possible.
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
# Internal: Convert value to a percentage.
#
# Returns a Integer or Float representation of the value.
# Raises ArgumentError if conversion is not possible.
def self.to_percentage(value)
if value.to_s.include?('.'.freeze)
to_float(value)
else
to_integer(value)
end
end
# Internal: Convert value to a set.
#
# Returns a Set representation of the value.
# Raises ArgumentError if conversion is not possible.
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
end
end
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