note
	description: "Decoding of arbitrary objects graphs between sessions of a same program."
	legal: "See notice at end of class."
	status: "See notice at end of class."
	date: "$Date: 2020-05-19 14:29:33 +0000 (Tue, 19 May 2020) $"
	revision: "$Revision: 104259 $"

class 
	SED_BASIC_DESERIALIZER

inherit
	SED_SESSION_DESERIALIZER
		redefine
			read_header
		end

create 
	make

feature {NONE} -- Implementation

	read_header (a_count: NATURAL_32)
			-- Read header which contains mapping between dynamic type and their
			-- string representation.
		local
			i, nb: INTEGER_32
			l_deser: like deserializer
			l_reflector: like reflector
			l_table: like dynamic_type_table
			l_old_dtype, l_new_dtype: INTEGER_32
			l_type_str: STRING_8
		do
			l_reflector := reflector
			l_deser := deserializer
			read_settings
			nb := l_deser.read_compressed_natural_32.to_integer_32
			create l_table.make_filled (0, nb)
			from
				i := 0
			until
				i = nb
			loop
				l_old_dtype := l_deser.read_compressed_natural_32.to_integer_32
				l_type_str := l_deser.read_string_8
				l_new_dtype := l_reflector.dynamic_type_from_string (l_type_str)
				if l_new_dtype >= 0 then
					if not l_table.valid_index (l_old_dtype) then
						l_table := l_table.aliased_resized_area_with_default (0, (l_old_dtype + 1).max (l_table.count * 2))
					end;
					l_table.put (l_new_dtype, l_old_dtype)
				else
					add_error (Error_factory.new_missing_type_error (l_type_str, l_type_str))
				end
				i := i + 1
			end
			dynamic_type_table := l_table
			read_object_table (a_count)
		end
	
note
	library: "EiffelBase: Library of reusable components for Eiffel."
	copyright: "Copyright (c) 1984-2020, Eiffel Software and others"
	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
	source: "[
		Eiffel Software
		5949 Hollister Ave., Goleta, CA 93117 USA
		Telephone 805-685-1006, Fax 805-685-6869
		Website http://www.eiffel.com
		Customer support http://support.eiffel.com
	]"

end -- class SED_BASIC_DESERIALIZER

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