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Versions: 7
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Contents
# Responsible for all string to type coercions.
class ENVied::Coercer
UnsupportedCoercion = Class.new(StandardError)
# Coerce strings to specific type.
#
# @param string [String] the string to be coerced
# @param type [#to_sym] the type to coerce to
#
# @example
# ENVied::Coercer.new.coerce('1', :Integer)
# # => 1
#
# @return [type] the coerced string.
def coerce(string, type)
unless supported_type?(type)
raise ArgumentError, "The type `#{type.inspect}` is not supported."
end
coercer.public_send("to_#{type.downcase}", string)
end
def self.supported_types
@supported_types ||= begin
[:hash, :array, :time, :date, :symbol, :boolean, :integer, :string, :uri, :float].sort
end
end
# Whether or not Coercer can coerce strings to the provided type.
#
# @param type [#to_sym] the type (case insensitive)
#
# @example
# ENVied::Coercer.supported_type?('string')
# # => true
#
# @return [Boolean] whether type is supported.
def self.supported_type?(type)
supported_types.include?(type.to_sym.downcase)
end
def supported_type?(type)
self.class.supported_type?(type)
end
def supported_types
self.class.supported_types
end
def coercer
@coercer ||= ENViedString.new
end
def coerced?(value)
!value.kind_of?(String)
end
def coercible?(string, type)
return false unless supported_type?(type)
coerce(string, type)
true
rescue UnsupportedCoercion
false
end
end
Version data entries
7 entries across 7 versions & 1 rubygems