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Versions: 18
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Contents
class PSD
# Used for lazily executing methods on demand
class LazyExecute
def initialize(obj, file)
@obj = obj
@file = file
@start_pos = @file.tell
@loaded = false
@load_method = nil
@load_args = []
@passthru = []
PSD.logger.debug "Marked #{@obj.class.name} at position #{@start_pos} for lazy execution"
end
def now(method, *args, &block)
PSD.logger.debug "Executing #{@obj.class.name}##{method} now"
@obj.send(method, *args, &block)
return self
end
def later(method, *args)
@load_method = method
@load_args = args
return self
end
def ignore(*args)
@passthru += args
return self
end
def loaded?
@loaded
end
def method_missing(method, *args, &block)
load! if !loaded? && !@passthru.include?(method.to_sym)
@obj.send(method, *args, &block)
end
def inspect
if loaded?
@obj.inspect
else
"<PSD::LazyExecute @obj=#{@obj.class.name}, @pos=#{@start_pos}, @load_method=:#{@load_method}>"
end
end
private
def load!
PSD.logger.debug "Lazily executing #{@obj.class.name}##{@load_method}"
orig_pos = @file.tell
@file.seek @start_pos
@obj.send(@load_method, *@load_args)
@file.seek orig_pos
@loaded = true
end
end
end
Version data entries
18 entries across 18 versions & 1 rubygems