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Contents
require 'rhet-butler/slide-traverser'
module RhetButler
class IncludeProcessor < SlideTraverser
Collector = Struct.new(:group, :slides, :loader)
attr_accessor :root_group
def initialize(loader)
@loader = loader
super()
end
def current_loader
if target_stack.empty?
return @loader
else
return target_stack.last.loader
end
end
def setup
descend(@root_group, @root_group)
end
def descend(source, dest)
unless Collector === dest
dest = Collector.new(dest, [], current_loader)
end
super(source, dest)
end
def ascend
target = target_stack.pop
unless target == target_stack.last
target.group.slides = target.slides
end
iter_stack.pop
end
def on_include(includer)
loader = includer.load(current_loader)
collector = target_stack.last.dup
collector.loader = loader
descend(includer, collector)
end
def on_slide(slide)
target_stack.last.slides << slide
end
def on_group(group)
target_stack.last.slides << group
super
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems