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module AdaptivePayments
# Array that coerces all input values to a JsonModel of the given type
class CoercedArray < Array
# Initialize the CoercedArray for the given type
#
# @param [Class<JsonModel>] type
# the JsonModel descendant to coerce to
def initialize(type)
raise ArgumentError, "The type in a CoercedArray must be a JsonModel" unless type <= JsonModel
super()
@type = type
end
# Append the given value to the Array
# The value may be a Hash to coerce, or a valid JsonModel
#
# @param [Hash, JsonModel] object
# the object to append
#
# @return CoercedArray
def push(object)
object = @type.new(object) unless object.kind_of?(@type)
super
end
alias_method :<<, :push
# Concatenate another Array with this one and return the result as a new Array
# All items in other will be coerced to the correct type
#
# @param [Array] other
# another Array to concatenate with
#
# @return CoercedArray
def +(other)
raise ArgumentError, "Cannot union #{other.class} with #{self.class}<#{@type}>" unless other.kind_of?(Array)
super(CoercedArray.new(@type).concat(other))
end
# Concatenate another Array with this one and modify the Array in place
#
# @param [Array] other
# another Array to concatenate with
#
# @return CoercedArray
def concat(other)
raise ArgumentError, "Cannot append #{other.class} to #{self.class}<#{@type}>" unless other.kind_of?(Array)
super(other.inject(CoercedArray.new(@type)) { |ary, v| ary.push(v) })
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems