Method: PDF::Reader::ObjectHash#deref_integer

Defined in:
lib/pdf/reader/object_hash.rb

#deref_integer(key) ⇒ Object

If key is a PDF::Reader::Reference object, lookup the corresponding object in the PDF and return it. Otherwise return key untouched.

Guaranteed to only return an Integer or nil. If the dereference results in any other type then a MalformedPDFError exception will raise. Useful when expecting an Array and no other type will do.

Some effort to cast to an int is made when the reference points to a non-integer. : (untyped) -> Integer?



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# File 'lib/pdf/reader/object_hash.rb', line 221

def deref_integer(key)
  obj = deref(key)

  return obj if obj.nil?

  if !obj.is_a?(Integer)
    if obj.respond_to?(:to_i)
      obj = obj.to_i
    else
      raise MalformedPDFError, "expected object to be an Integer"
    end
  end

  obj
end