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Contents
module Xmlss
class ElementStack
# this class is just a wrapper to Array. I want to treat this as a
# stack of objects for the workbook DSL to reference. I need to push
# an object onto the stack, reference it using the 'current' method,
# and pop it off the stack when I'm done.
attr_reader :markup_type
def initialize(writer, markup_type)
@stack = []
@writer = writer
@markup_type = markup_type.to_s
@written_level = 0
end
def empty?; @stack.empty?; end
def size; @stack.size; end
def first; @stack.first; end
def last; @stack.last; end
alias_method :current, :last
alias_method :level, :size
def using(element, &block)
push(element)
(block || Proc.new {}).call
pop
end
def push(element)
if @written_level < level
write(current)
@writer.push(@markup_type)
@written_level += 1
end
@stack.push(element)
end
def pop
if !empty?
@written_level < level ? write(@stack.pop) : close(@stack.pop)
end
end
private
def close(element)
@writer.pop(@markup_type)
@written_level -= 1
element
end
def write(element)
@writer.write(element)
element
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems