Method reserveObject

lib/matplotlib/backends/backend_pdf.py:1824–1833

Reserve an ID for an indirect object. The name is used for debugging in case we forget to print out the object with writeObject.

(self, name='')

        self.output(*cmds)

    def reserveObject(self, name=''):
        """
        Reserve an ID for an indirect object.

        The name is used for debugging in case we forget to print out
        the object with writeObject.
        """
        id = next(self._object_seq)
        self.xrefTable.append([None, 0, name])
        return Reference(id)

    def recordXref(self, id):
        self.xrefTable[id][0] = self.fh.tell() - self.tell_base