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Contents
#
# Unfortunately, prawn mutates arguments passed in to it.
# When we make a copy of one of the call stacks, we need to make a deep
# duplicate of it so that the first time prawn mutates the arguments, it
# won't affect the subsequent calls.
#
module Prawn::SVG::Elements::CallDuplicator
private
def duplicate_calls(calls)
calls.map { |call| duplicate_call(call) }
end
def duplicate_call(call)
[call[0], duplicate_array(call[1]), duplicate_hash(call[2]), duplicate_calls(call[3])]
end
def duplicate_array(array)
array.map do |value|
case value
when Array then duplicate_array(value)
when Hash then duplicate_hash(value)
else value
end
end
end
def duplicate_hash(hash)
hash.each.with_object({}) do |(key, value), result|
result[key] = case value
when Array then duplicate_array(value)
when Hash then duplicate_hash(value)
else value
end
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems