Sha256: 9cd8a26d7f4c5889863d14552f62cbeab7945f8bebcc10751c06f5e634829311
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Size: 999 Bytes
Versions: 5
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Stored size: 999 Bytes
Contents
module Alf
module Engine
#
# Wraps attributes under as a sub-tuple
#
class Wrap
include Cog
# @return [Enumerable] The operand
attr_reader :operand
# @return [AttrList] Attributes to wrap
attr_reader :attributes
# @return [AttrName] Name of the introduced wrapped attribute
attr_reader :as
# @return [Boolean] Allbut wrapping?
attr_reader :allbut
# Creates a SetAttr instance
def initialize(operand, attributes, as, allbut, expr = nil, compiler = nil)
super(expr, compiler)
@operand = operand
@attributes = attributes
@as = as
@allbut = allbut
end
# (see Cog#each)
def _each
operand.each do |tuple|
rest, key = @attributes.split_tuple(tuple, @allbut)
key[@as] = rest
yield key
end
end
def arguments
[ attribute ]
end
end # class Wrap
end # module Engine
end # module Alf
Version data entries
5 entries across 5 versions & 1 rubygems