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module Saxon
module XDM
# Mixin for objects that are XDM Sequence-like in behaviour
module SequenceLike
# Implementors should return an {Enumerator} over the Sequence. For
# {XDM::Value}s, this will just be the items in the sequence. For
# XDM::AtomicValue or XDM::Node, this will be a single-item Enumerator so
# that Items can be correctly treated as single-item Values.
def sequence_enum
raise NotImplementedError
end
# Implementors should return the size of the Sequence. For
# {XDM::AtomicValue} this will always be 1.
# @return [Integer] the sequence size
def sequence_size
raise NotImplementedError
end
# Return a new XDM::Value from this Sequence with the passed in value
# appended to the end.
# @return [XDM::Value] the new Value
def append(other)
XDM::Value.create([self, other])
end
alias_method :<<, :append
alias_method :+, :append
end
# Mixin for objects that are Sequence-like but only contain a single item,
# like {XDM::AtomicValue} or {XDM::Node}
module ItemSequenceLike
# return a single-item Enumerator containing +self+
def sequence_enum
[self].to_enum
end
# Returns the sequence size, which will always be 1.
def sequence_size
1
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems