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require_relative '../../puppet/parameter/value_collection'
# Describes an acceptable value for a parameter or property.
# An acceptable value is either specified as a literal value or a regular expression.
# @note this class should be used via the api methods in {Puppet::Parameter} and {Puppet::Property}
# @api private
#
class Puppet::Parameter::Value
attr_reader :name, :options, :event
attr_accessor :block, :method, :required_features, :invalidate_refreshes
# Adds an alias for this value.
# Makes the given _name_ be an alias for this acceptable value.
# @param name [Symbol] the additional alias this value should be known as
# @api private
#
def alias(name)
@aliases << convert(name)
end
# @return [Array<Symbol>] Returns all aliases (or an empty array).
# @api private
#
def aliases
@aliases.dup
end
# Stores the event that our value generates, if it does so.
# @api private
#
def event=(value)
@event = convert(value)
end
# Initializes the instance with a literal accepted value, or a regular expression.
# If anything else is passed, it is turned into a String, and then made into a Symbol.
# @param name [Symbol, Regexp, Object] the value to accept, Symbol, a regular expression, or object to convert.
# @api private
#
def initialize(name)
if name.is_a?(Regexp)
@name = name
else
# Convert to a string and then a symbol, so things like true/false
# still show up as symbols.
@name = convert(name)
end
@aliases = []
end
# Checks if the given value matches the acceptance rules (literal value, regular expression, or one
# of the aliases.
# @api private
#
def match?(value)
if regex?
return true if name =~ value.to_s
else
return(name == convert(value) ? true : @aliases.include?(convert(value)))
end
end
# @return [Boolean] whether the accepted value is a regular expression or not.
# @api private
#
def regex?
@name.is_a?(Regexp)
end
private
# A standard way of converting all of our values, so we're always
# comparing apples to apples.
# @api private
#
def convert(value)
case value
when Symbol, '' # can't intern an empty string
value
when String
value.intern
when true
:true
when false
:false
else
value.to_s.intern
end
end
end
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