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Versions: 8
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Contents
module Vedeu
module Output
# Store a copy of the data last processed by
# {Vedeu::Output::Compressor}. Both the original content and the
# compressed versions are kept (unless modified) to speed up the
# rendering of the display.
#
# @api private
#
module CompressorCache
extend self
# @param key [NilClass|Symbol]
# @return [Array<void>]
def read(key)
storage.fetch(key, [])
end
# @return [Hash<Symbol => Array<void>>]
def reset!
@storage = in_memory
end
alias_method :reset, :reset!
# @return [Hash<Symbol => Array<void>>]
def storage
@storage ||= in_memory
end
# @param key [NilClass|Symbol]
# @param value [Array|NilClass]
# @return [Hash<Symbol => Array<void>>]
def write(key, value)
return storage if invalid_key?(key) || invalid_value?(value)
storage.merge!(key => value)
end
private
# @return [Hash<Symbol => Array<void>>]
def in_memory
{
compressed: '',
original: [],
}
end
# @param key [NilClass|Symbol]
# @return [Boolean]
def invalid_key?(key)
key.nil? || !in_memory.keys.include?(key)
end
# @param value [Array|NilClass]
# @return [Boolean]
def invalid_value?(value)
value.nil? || value.empty?
end
end # CompressorCache
end # Output
end # Vedeu
Version data entries
8 entries across 8 versions & 1 rubygems