note description: "Decoding of arbitrary objects graphs within a session of a same program." legal: "See notice at end of class." status: "See notice at end of class." date: "$Date: 2017-03-23 19:18:26 +0000 (Thu, 23 Mar 2017) $" revision: "$Revision: 100033 $" class SED_SESSION_DESERIALIZER inherit SED_UTILITIES EXCEPTION_MANAGER create make feature {NONE} -- Initialization make (a_deserializer: SED_READER_WRITER) -- Initialize current instance require a_deserializer_not_void: a_deserializer /= Void a_deserializer_ready: a_deserializer.is_ready_for_reading do create reflector create reflected_object.make (reflector) create object_references.make_empty (0) deserializer := a_deserializer ensure deserializer_set: deserializer = a_deserializer end feature -- Access deserializer: SED_READER_WRITER -- Serializer used to decode data last_decoded_object: detachable ANY -- Object decoded during last call to decode feature -- Status report error: detachable SED_ERROR obsolete "Use `errors' directly to find out errors encountered during retrieval. [2017-05-31]" -- Last error encountered during retrieval do if attached errors as l_errors and then not l_errors.is_empty then Result := l_errors.last end end errors: detachable ARRAYED_LIST [SED_ERROR] has_error: BOOLEAN -- Did we encounter an error during retrieval? do Result := attached errors as l_errors and then not l_errors.is_empty end feature -- Settings set_deserializer (a_deserializer: like deserializer) -- Set deserializer with a_deserializer. require a_deserializer_not_void: a_deserializer /= Void a_deserializer_ready: a_deserializer.is_ready_for_reading do deserializer := a_deserializer ensure deserializer_set: deserializer = a_deserializer end feature -- Basic operations frozen decode (a_is_gc_enabled: BOOLEAN) -- Decode object graph stored in deserializer. local l_count: NATURAL_32 l_mem: detachable like Memory l_is_collecting: BOOLEAN retried: BOOLEAN do if not retried then reset_errors if not a_is_gc_enabled then l_mem := Memory l_is_collecting := l_mem.collecting l_mem.collection_off end l_count := deserializer.read_compressed_natural_32 create object_references.make_empty (l_count.to_integer_32 + 1) read_header (l_count) if not has_error then decode_objects (l_count) end else if attached last_exception as l_exception then add_error (Error_factory.new_exception_error (l_exception)) else add_error (Error_factory.new_internal_error ("An Unknown exception occurred in `decode'.")) end last_decoded_object := Void end if l_is_collecting and then l_mem /= Void then l_mem.collection_on end clear_internal_data rescue retried := True retry end feature {NONE} -- Implementation: Access reflector: REFLECTOR -- Facilities to inspect. reflected_object: REFLECTED_REFERENCE_OBJECT -- Facilities to inspect objects. object_references: SPECIAL [ANY] -- Mapping between reference ID and the associated object. is_transient_retrieval_required: BOOLEAN -- Do we need to retrieve transient attribute with their default value? -- This is necessary for Session/Basic storing where we expect the same -- object layout. do Result := True end is_store_settings_enabled: BOOLEAN -- Are settings stored? -- By default not for SED_INDEPENDENT_DESERIALIZER. do Result := True end has_reference_with_copy_semantics: BOOLEAN -- Does retrieved data contain references with copy semantics? Error_factory: SED_ERROR_FACTORY -- Once access to the error factory. once create Result ensure result_not_void: Result /= Void end version: NATURAL_32 -- Internal version of the storable being retrieved (See SED_VERSIONS for possible values). dynamic_type_table: detachable SPECIAL [INTEGER_32] -- Mapping between old dynamic types and new ones. frozen new_dynamic_type_id (a_old_type_id: INTEGER_32): INTEGER_32 -- Given a_old_type_id, dynamic type id in stored system, retrieve dynamic -- type id in current system. Return -1 if not found. require a_old_type_id_non_negative: a_old_type_id >= 0 do if attached dynamic_type_table as t then if a_old_type_id < t.count then Result := t.item (a_old_type_id) else Result := -1 end else Result := a_old_type_id end ensure minus_one_of_non_negative: Result >= -1 end feature {NONE} -- Implementation: Settings set_error (a_error: SED_ERROR) obsolete "Use `add_error' instead. [2017-05-31]" -- Assign a_error to error. do add_error (a_error) ensure error_set: error = a_error end add_error (a_error: SED_ERROR) -- Assign a_error to error. local l_new_errors: like errors do if attached errors as l_errors then l_errors.extend (a_error) else create l_new_errors.make (10) l_new_errors.extend (a_error) errors := l_new_errors end ensure error_set: attached errors as l_errors and then l_errors.has (a_error) end raise_fatal_error (a_error: SED_ERROR) -- Add a_error to errors and raise an exception to terminate retrieval -- because the error is beyond recovery. local l_failure: SERIALIZATION_FAILURE do add_error (a_error) create l_failure l_failure.set_description (a_error.message) l_failure.raise ensure error_set: attached errors as l_errors and then l_errors.has (a_error) end reset_errors -- Remove all errors for a new retrieval do errors := Void ensure errors_reset: errors = Void end feature {NONE} -- Cleaning clear_internal_data -- Clear all allocated data do create object_references.make_empty (0) if deserializer.is_ready_for_reading then deserializer.cleanup end dynamic_type_table := Void end feature {NONE} -- Implementation read_header (a_count: NATURAL_32) -- Read header of serialized data which has a_count objects. do read_settings read_object_table (a_count) end frozen read_settings -- Read various settings of serialized data. do if is_store_settings_enabled then version := deserializer.read_compressed_natural_32 if version >= {SED_VERSIONS}.version_7_3 then has_reference_with_copy_semantics := deserializer.read_boolean else has_reference_with_copy_semantics := False end else version := {SED_VERSIONS}.version_5_6 has_reference_with_copy_semantics := False end end frozen read_object_table (a_count: NATURAL_32) -- Read object table if any, which has a_count objects. local l_objs: like object_references l_deser: like deserializer l_reflector: like reflector l_mem: like Memory l_is_collecting: BOOLEAN l_nat32: NATURAL_32 l_dtype, l_old_dtype: INTEGER_32 i, nb: INTEGER_32 l_obj: ANY do if deserializer.read_boolean then l_mem := Memory l_is_collecting := l_mem.collecting l_deser := deserializer l_reflector := reflector l_objs := object_references l_objs.extend (Current) from i := 0 nb := a_count.to_integer_32 until i = nb loop if l_is_collecting and then i // 2000 = 0 then l_mem.collection_off end l_old_dtype := l_deser.read_compressed_natural_32.to_integer_32 l_dtype := new_dynamic_type_id (l_old_dtype) if l_dtype >= 0 then l_nat32 := deserializer.read_compressed_natural_32 check l_nat32_valid: l_nat32 > 0 and l_nat32 < {INTEGER_32}.max_value.as_natural_32 end check valid_id: l_nat32.to_integer_32 = i + 1 end if l_deser.read_natural_8 = Is_special_flag then l_obj := new_special_instance (l_dtype, l_deser.read_compressed_integer_32, l_deser.read_compressed_integer_32) else l_obj := l_reflector.new_instance_of (l_dtype) end l_objs.extend (l_obj) else raise_fatal_error (Error_factory.new_internal_error ("Cannot read object type. Corrupted data!")) end i := i + 1 end if l_is_collecting then l_mem.collection_on end else raise_fatal_error (Error_factory.new_format_mismatch_66) end end frozen read_default_value (a_abstract_type: INTEGER_32) -- Read from the stream the default value that corresponds to a_abstract_type. local l_deser: like deserializer do l_deser := deserializer inspect a_abstract_type when {REFLECTOR_CONSTANTS}.boolean_type then l_deser.read_boolean.do_nothing when {REFLECTOR_CONSTANTS}.character_8_type then l_deser.read_character_8.do_nothing when {REFLECTOR_CONSTANTS}.character_32_type then l_deser.read_character_32.do_nothing when {REFLECTOR_CONSTANTS}.natural_8_type then l_deser.read_natural_8.do_nothing when {REFLECTOR_CONSTANTS}.natural_16_type then l_deser.read_natural_16.do_nothing when {REFLECTOR_CONSTANTS}.natural_32_type then l_deser.read_natural_32.do_nothing when {REFLECTOR_CONSTANTS}.natural_64_type then l_deser.read_natural_64.do_nothing when {REFLECTOR_CONSTANTS}.integer_8_type then l_deser.read_integer_8.do_nothing when {REFLECTOR_CONSTANTS}.integer_16_type then l_deser.read_integer_16.do_nothing when {REFLECTOR_CONSTANTS}.integer_32_type then l_deser.read_integer_32.do_nothing when {REFLECTOR_CONSTANTS}.integer_64_type then l_deser.read_integer_64.do_nothing when {REFLECTOR_CONSTANTS}.real_32_type then l_deser.read_real_32.do_nothing when {REFLECTOR_CONSTANTS}.real_64_type then l_deser.read_real_64.do_nothing when {REFLECTOR_CONSTANTS}.pointer_type then l_deser.read_pointer.do_nothing when {REFLECTOR_CONSTANTS}.reference_type then l_deser.read_compressed_natural_32.do_nothing when {REFLECTOR_CONSTANTS}.expanded_type then l_deser.read_natural_8.do_nothing else check False end end end frozen read_reference: detachable ANY -- Read reference from the stream. local l_nat32: NATURAL_32 do l_nat32 := deserializer.read_compressed_natural_32 if l_nat32 /= 0 then check l_nat32_valid: l_nat32 < {INTEGER_32}.max_value.as_natural_32 end Result := object_references.item (l_nat32.to_integer_32) end end read_persistent_field_count (a_reflected_object: REFLECTED_OBJECT): INTEGER_32 -- Number of fields we are going to read from a_reflected_object in the the retrieved system. do Result := a_reflected_object.field_count end new_attribute_offset (a_new_type_id, a_old_offset: INTEGER_32): INTEGER_32 -- Given attribute offset a_old_offset in the stored object whose dynamic type id -- is now a_new_type_id, retrieve new offset in a_new_type_id. -- If not found 0 in which case it is an error. require a_new_type_id_non_negative: a_new_type_id >= 0 a_old_offset_positive: a_old_offset > 0 do Result := a_old_offset ensure new_attribute_offset_non_negative: Result >= 0 end decode_objects (a_count: NATURAL_32) -- Decode a_count object from deserializer and store root object in last_decoded_object. require a_count_positive: a_count > 0 local i: NATURAL_32 do decode_object (True) from i := 1 until i = a_count loop decode_object (False) i := i + 1 end end frozen decode_object (is_root: BOOLEAN) -- Decode one object and store it in last_decoded_object if is_root. local l_deser: like deserializer l_reflected_object: like reflected_object l_obj: detachable ANY l_nat32: NATURAL_32 do l_deser := deserializer l_reflected_object := reflected_object l_nat32 := l_deser.read_compressed_natural_32 check l_nat32_valid: l_nat32 < {INTEGER_32}.max_value.as_natural_32 end l_obj := object_references.item (l_nat32.to_integer_32) l_reflected_object.set_object (l_obj) if l_reflected_object.is_special then decode_special (l_obj, abstract_type (l_reflected_object.generic_dynamic_type (1))) elseif l_reflected_object.is_tuple then decode_tuple (l_obj) else decode_normal_object (l_reflected_object) end if is_root then last_decoded_object := l_obj end end decode_normal_object (a_reflected_object: REFLECTED_OBJECT) -- Decode an object represented by a_reflected_object. require an_obj_not_void: a_reflected_object /= Void local l_deser: like deserializer i, nb: INTEGER_32 l_dtype, l_exp_dtype, l_new_offset: INTEGER_32 l_exp: REFLECTED_REFERENCE_OBJECT do l_deser := deserializer from i := 1 l_dtype := a_reflected_object.dynamic_type nb := read_persistent_field_count (a_reflected_object) + 1 until i = nb loop l_new_offset := new_attribute_offset (l_dtype, i) check l_new_offset_positive: l_new_offset > 0 end if not a_reflected_object.is_field_transient (l_new_offset) then inspect a_reflected_object.field_type (l_new_offset) when {REFLECTOR_CONSTANTS}.boolean_type then a_reflected_object.set_boolean_field (l_new_offset, l_deser.read_boolean) when {REFLECTOR_CONSTANTS}.character_8_type then a_reflected_object.set_character_8_field (l_new_offset, l_deser.read_character_8) when {REFLECTOR_CONSTANTS}.character_32_type then a_reflected_object.set_character_32_field (l_new_offset, l_deser.read_character_32) when {REFLECTOR_CONSTANTS}.natural_8_type then a_reflected_object.set_natural_8_field (l_new_offset, l_deser.read_natural_8) when {REFLECTOR_CONSTANTS}.natural_16_type then a_reflected_object.set_natural_16_field (l_new_offset, l_deser.read_natural_16) when {REFLECTOR_CONSTANTS}.natural_32_type then a_reflected_object.set_natural_32_field (l_new_offset, l_deser.read_natural_32) when {REFLECTOR_CONSTANTS}.natural_64_type then a_reflected_object.set_natural_64_field (l_new_offset, l_deser.read_natural_64) when {REFLECTOR_CONSTANTS}.integer_8_type then a_reflected_object.set_integer_8_field (l_new_offset, l_deser.read_integer_8) when {REFLECTOR_CONSTANTS}.integer_16_type then a_reflected_object.set_integer_16_field (l_new_offset, l_deser.read_integer_16) when {REFLECTOR_CONSTANTS}.integer_32_type then a_reflected_object.set_integer_32_field (l_new_offset, l_deser.read_integer_32) when {REFLECTOR_CONSTANTS}.integer_64_type then a_reflected_object.set_integer_64_field (l_new_offset, l_deser.read_integer_64) when {REFLECTOR_CONSTANTS}.real_32_type then a_reflected_object.set_real_32_field (l_new_offset, l_deser.read_real_32) when {REFLECTOR_CONSTANTS}.real_64_type then a_reflected_object.set_real_64_field (l_new_offset, l_deser.read_real_64) when {REFLECTOR_CONSTANTS}.pointer_type then a_reflected_object.set_pointer_field (l_new_offset, l_deser.read_pointer) when {REFLECTOR_CONSTANTS}.reference_type then if has_reference_with_copy_semantics then if l_deser.read_boolean then l_exp_dtype := new_dynamic_type_id (l_deser.read_compressed_integer_32) if l_exp_dtype < 0 then raise_fatal_error (Error_factory.new_internal_error ("Cannot read object type. Corrupted data!")) else create l_exp.make (reflector.new_instance_of (l_exp_dtype)) decode_normal_object (l_exp) a_reflected_object.set_reference_field (l_new_offset, l_exp.object) end else a_reflected_object.set_reference_field (l_new_offset, read_reference) end else a_reflected_object.set_reference_field (l_new_offset, read_reference) end when {REFLECTOR_CONSTANTS}.expanded_type then l_deser.read_compressed_integer_32.do_nothing decode_normal_object (a_reflected_object.expanded_field (l_new_offset)) else check False end end end i := i + 1 end end frozen decode_tuple (an_obj: ANY) -- Decode TUPLE object. require an_obj_not_void: an_obj /= Void an_obj_is_tuple: attached {TUPLE} an_obj local l_deser: like deserializer i, nb: INTEGER_32 do l_deser := deserializer if attached {TUPLE} an_obj as l_tuple then from i := 1 nb := l_tuple.count + 1 until i = nb loop inspect l_deser.read_natural_8 when {TUPLE}.boolean_code then l_tuple.put_boolean (l_deser.read_boolean, i) when {TUPLE}.character_8_code then l_tuple.put_character_8 (l_deser.read_character_8, i) when {TUPLE}.character_32_code then l_tuple.put_character_32 (l_deser.read_character_32, i) when {TUPLE}.natural_8_code then l_tuple.put_natural_8 (l_deser.read_natural_8, i) when {TUPLE}.natural_16_code then l_tuple.put_natural_16 (l_deser.read_natural_16, i) when {TUPLE}.natural_32_code then l_tuple.put_natural_32 (l_deser.read_natural_32, i) when {TUPLE}.natural_64_code then l_tuple.put_natural_64 (l_deser.read_natural_64, i) when {TUPLE}.integer_8_code then l_tuple.put_integer_8 (l_deser.read_integer_8, i) when {TUPLE}.integer_16_code then l_tuple.put_integer_16 (l_deser.read_integer_16, i) when {TUPLE}.integer_32_code then l_tuple.put_integer_32 (l_deser.read_integer_32, i) when {TUPLE}.integer_64_code then l_tuple.put_integer_64 (l_deser.read_integer_64, i) when {TUPLE}.real_32_code then l_tuple.put_real_32 (l_deser.read_real_32, i) when {TUPLE}.real_64_code then l_tuple.put_real_64 (l_deser.read_real_64, i) when {TUPLE}.pointer_code then l_tuple.put_pointer (l_deser.read_pointer, i) when {TUPLE}.reference_code then l_tuple.put_reference (read_reference, i) else check False end end i := i + 1 end end end frozen new_special_instance (a_dtype, a_item_type, a_count: INTEGER_32): SPECIAL [detachable ANY] -- Create new special instance of a special object whose dynamic -- type is a_dtype, whose element abstract type is a_item_type -- and of count a_count. require a_dtype_non_negative: a_dtype >= 0 a_item_type_non_negative: a_item_type >= 0 a_count_non_negative: a_count >= 0 do inspect a_item_type when {REFLECTOR_CONSTANTS}.boolean_type then create {SPECIAL [BOOLEAN]} Result.make_empty (a_count) when {REFLECTOR_CONSTANTS}.character_8_type then create {SPECIAL [CHARACTER_8]} Result.make_empty (a_count) when {REFLECTOR_CONSTANTS}.character_32_type then create {SPECIAL [CHARACTER_32]} Result.make_empty (a_count) when {REFLECTOR_CONSTANTS}.natural_8_type then create {SPECIAL [NATURAL_8]} Result.make_empty (a_count) when {REFLECTOR_CONSTANTS}.natural_16_type then create {SPECIAL [NATURAL_16]} Result.make_empty (a_count) when {REFLECTOR_CONSTANTS}.natural_32_type then create {SPECIAL [NATURAL_32]} Result.make_empty (a_count) when {REFLECTOR_CONSTANTS}.natural_64_type then create {SPECIAL [NATURAL_64]} Result.make_empty (a_count) when {REFLECTOR_CONSTANTS}.integer_8_type then create {SPECIAL [INTEGER_8]} Result.make_empty (a_count) when {REFLECTOR_CONSTANTS}.integer_16_type then create {SPECIAL [INTEGER_16]} Result.make_empty (a_count) when {REFLECTOR_CONSTANTS}.integer_32_type then create {SPECIAL [INTEGER_32]} Result.make_empty (a_count) when {REFLECTOR_CONSTANTS}.integer_64_type then create {SPECIAL [INTEGER_64]} Result.make_empty (a_count) when {REFLECTOR_CONSTANTS}.real_32_type then create {SPECIAL [REAL_32]} Result.make_empty (a_count) when {REFLECTOR_CONSTANTS}.real_64_type then create {SPECIAL [REAL_64]} Result.make_empty (a_count) when {REFLECTOR_CONSTANTS}.pointer_type then create {SPECIAL [POINTER]} Result.make_empty (a_count) else Result := reflector.new_special_any_instance (a_dtype, a_count) end ensure new_special_instance_not_void: Result /= Void end frozen decode_special (an_obj: ANY; an_item_type: INTEGER_32) -- Decode SPECIAL object of element type an_item_type in an_obj. require an_obj_not_void: an_obj /= Void an_obj_is_special: attached {SPECIAL [detachable ANY]} an_obj local nb: INTEGER_32 do nb := deserializer.read_compressed_integer_32 inspect an_item_type when {REFLECTOR_CONSTANTS}.boolean_type then if attached {SPECIAL [BOOLEAN]} an_obj as l_spec_boolean then decode_special_boolean (l_spec_boolean, nb) else check l_spec_boolean_not_void: False end end when {REFLECTOR_CONSTANTS}.character_8_type then if attached {SPECIAL [CHARACTER_8]} an_obj as l_spec_character_8 then decode_special_character_8 (l_spec_character_8, nb) else check l_spec_character_8_not_void: False end end when {REFLECTOR_CONSTANTS}.character_32_type then if attached {SPECIAL [CHARACTER_32]} an_obj as l_spec_character_32 then decode_special_character_32 (l_spec_character_32, nb) else check l_spec_character_32_not_void: False end end when {REFLECTOR_CONSTANTS}.natural_8_type then if attached {SPECIAL [NATURAL_8]} an_obj as l_spec_natural_8 then decode_special_natural_8 (l_spec_natural_8, nb) else check l_spec_natural_8_not_void: False end end when {REFLECTOR_CONSTANTS}.natural_16_type then if attached {SPECIAL [NATURAL_16]} an_obj as l_spec_natural_16 then decode_special_natural_16 (l_spec_natural_16, nb) else check l_spec_natural_16_not_void: False end end when {REFLECTOR_CONSTANTS}.natural_32_type then if attached {SPECIAL [NATURAL_32]} an_obj as l_spec_natural_32 then decode_special_natural_32 (l_spec_natural_32, nb) else check l_spec_natural_32_not_void: False end end when {REFLECTOR_CONSTANTS}.natural_64_type then if attached {SPECIAL [NATURAL_64]} an_obj as l_spec_natural_64 then decode_special_natural_64 (l_spec_natural_64, nb) else check l_spec_natural_64_not_void: False end end when {REFLECTOR_CONSTANTS}.integer_8_type then if attached {SPECIAL [INTEGER_8]} an_obj as l_spec_integer_8 then decode_special_integer_8 (l_spec_integer_8, nb) else check l_spec_integer_8_not_void: False end end when {REFLECTOR_CONSTANTS}.integer_16_type then if attached {SPECIAL [INTEGER_16]} an_obj as l_spec_integer_16 then decode_special_integer_16 (l_spec_integer_16, nb) else check l_spec_integer_16_not_void: False end end when {REFLECTOR_CONSTANTS}.integer_32_type then if attached {SPECIAL [INTEGER_32]} an_obj as l_spec_integer_32 then decode_special_integer_32 (l_spec_integer_32, nb) else check l_spec_integer_32_not_void: False end end when {REFLECTOR_CONSTANTS}.integer_64_type then if attached {SPECIAL [INTEGER_64]} an_obj as l_spec_integer_64 then decode_special_integer_64 (l_spec_integer_64, nb) else check l_spec_integer_64_not_void: False end end when {REFLECTOR_CONSTANTS}.real_32_type then if attached {SPECIAL [REAL_32]} an_obj as l_spec_real_32 then decode_special_real_32 (l_spec_real_32, nb) else check l_spec_real_32_not_void: False end end when {REFLECTOR_CONSTANTS}.real_64_type then if attached {SPECIAL [REAL_64]} an_obj as l_spec_real_64 then decode_special_real_64 (l_spec_real_64, nb) else check l_spec_real_64_not_void: False end end when {REFLECTOR_CONSTANTS}.pointer_type then if attached {SPECIAL [POINTER]} an_obj as l_spec_pointer then decode_special_pointer (l_spec_pointer, nb) else check l_spec_pointer_not_void: False end end else check an_item_type_valid: an_item_type = {REFLECTOR_CONSTANTS}.reference_type end if attached {SPECIAL [detachable ANY]} an_obj as l_spec_any then decode_special_reference (l_spec_any, nb) else check l_spec_any_not_void: False end end end end frozen decode_special_boolean (a_spec: SPECIAL [BOOLEAN]; a_count: INTEGER_32) -- Decode SPECIAL [BOOLEAN]. require a_spec_not_void: a_spec /= Void local i: INTEGER_32 l_deser: like deserializer do from l_deser := deserializer until i = a_count loop a_spec.extend (l_deser.read_boolean) i := i + 1 end end frozen decode_special_character_8 (a_spec: SPECIAL [CHARACTER_8]; a_count: INTEGER_32) -- Decode SPECIAL [CHARACTER_8]. require a_spec_not_void: a_spec /= Void local i: INTEGER_32 l_deser: like deserializer do from l_deser := deserializer until i = a_count loop a_spec.extend (l_deser.read_character_8) i := i + 1 end end frozen decode_special_character_32 (a_spec: SPECIAL [CHARACTER_32]; a_count: INTEGER_32) -- Decode SPECIAL [CHARACTER_32]. require a_spec_not_void: a_spec /= Void local i: INTEGER_32 l_deser: like deserializer do from l_deser := deserializer until i = a_count loop a_spec.extend (l_deser.read_character_32) i := i + 1 end end frozen decode_special_natural_8 (a_spec: SPECIAL [NATURAL_8]; a_count: INTEGER_32) -- Decode SPECIAL [NATURAL_8]. require a_spec_not_void: a_spec /= Void local i: INTEGER_32 l_deser: like deserializer do from l_deser := deserializer until i = a_count loop a_spec.extend (l_deser.read_natural_8) i := i + 1 end end frozen decode_special_natural_16 (a_spec: SPECIAL [NATURAL_16]; a_count: INTEGER_32) -- Decode SPECIAL [NATURAL_16]. require a_spec_not_void: a_spec /= Void local i: INTEGER_32 l_deser: like deserializer do from l_deser := deserializer until i = a_count loop a_spec.extend (l_deser.read_natural_16) i := i + 1 end end frozen decode_special_natural_32 (a_spec: SPECIAL [NATURAL_32]; a_count: INTEGER_32) -- Decode SPECIAL [NATURAL_32]. require a_spec_not_void: a_spec /= Void local i: INTEGER_32 l_deser: like deserializer do from l_deser := deserializer until i = a_count loop a_spec.extend (l_deser.read_natural_32) i := i + 1 end end frozen decode_special_natural_64 (a_spec: SPECIAL [NATURAL_64]; a_count: INTEGER_32) -- Decode SPECIAL [NATURAL_64]. require a_spec_not_void: a_spec /= Void local i: INTEGER_32 l_deser: like deserializer do from l_deser := deserializer until i = a_count loop a_spec.extend (l_deser.read_natural_64) i := i + 1 end end frozen decode_special_integer_8 (a_spec: SPECIAL [INTEGER_8]; a_count: INTEGER_32) -- Decode SPECIAL [INTEGER_8]. require a_spec_not_void: a_spec /= Void local i: INTEGER_32 l_deser: like deserializer do from l_deser := deserializer until i = a_count loop a_spec.extend (l_deser.read_integer_8) i := i + 1 end end frozen decode_special_integer_16 (a_spec: SPECIAL [INTEGER_16]; a_count: INTEGER_32) -- Decode SPECIAL [INTEGER_16]. require a_spec_not_void: a_spec /= Void local i: INTEGER_32 l_deser: like deserializer do from l_deser := deserializer until i = a_count loop a_spec.extend (l_deser.read_integer_16) i := i + 1 end end frozen decode_special_integer_32 (a_spec: SPECIAL [INTEGER_32]; a_count: INTEGER_32) -- Decode SPECIAL [INTEGER]. require a_spec_not_void: a_spec /= Void local i: INTEGER_32 l_deser: like deserializer do from l_deser := deserializer until i = a_count loop a_spec.extend (l_deser.read_integer_32) i := i + 1 end end frozen decode_special_integer_64 (a_spec: SPECIAL [INTEGER_64]; a_count: INTEGER_32) -- Decode SPECIAL [INTEGER_64]. require a_spec_not_void: a_spec /= Void local i: INTEGER_32 l_deser: like deserializer do from l_deser := deserializer until i = a_count loop a_spec.extend (l_deser.read_integer_64) i := i + 1 end end frozen decode_special_real_32 (a_spec: SPECIAL [REAL_32]; a_count: INTEGER_32) -- Decode SPECIAL [REAL_32]. require a_spec_not_void: a_spec /= Void local i: INTEGER_32 l_deser: like deserializer do from l_deser := deserializer until i = a_count loop a_spec.extend (l_deser.read_real_32) i := i + 1 end end frozen decode_special_real_64 (a_spec: SPECIAL [REAL_64]; a_count: INTEGER_32) -- Decode SPECIAL [REAL_64]. require a_spec_not_void: a_spec /= Void local i: INTEGER_32 l_deser: like deserializer do from l_deser := deserializer until i = a_count loop a_spec.extend (l_deser.read_real_64) i := i + 1 end end frozen decode_special_pointer (a_spec: SPECIAL [POINTER]; a_count: INTEGER_32) -- Decode SPECIAL [POINTER]. require a_spec_not_void: a_spec /= Void local i: INTEGER_32 l_deser: like deserializer do from l_deser := deserializer until i = a_count loop a_spec.extend (l_deser.read_pointer) i := i + 1 end end frozen decode_special_reference (a_spec: SPECIAL [detachable ANY]; a_count: INTEGER_32) -- Decode SPECIAL of reference. local i: INTEGER_32 l_has_copy_semantics_item: BOOLEAN l_deser: like deserializer l_exp_dtype: INTEGER_32 l_exp: REFLECTED_REFERENCE_OBJECT do l_deser := deserializer if version >= {SED_VERSIONS}.version_7_3 then l_has_copy_semantics_item := l_deser.read_boolean end if not l_has_copy_semantics_item then from until i = a_count loop a_spec.force (read_reference, i) i := i + 1 end else from until i = a_count loop if l_deser.read_boolean then l_exp_dtype := new_dynamic_type_id (l_deser.read_compressed_integer_32) if l_exp_dtype < 0 then raise_fatal_error (Error_factory.new_internal_error ("Cannot read object type. Corrupted data!")) else create l_exp.make (reflector.new_instance_of (l_exp_dtype)) decode_normal_object (l_exp) a_spec.force (l_exp.object, i) end else a_spec.force (read_reference, i) end i := i + 1 end end end Memory: MEMORY -- Access to MEMORY features without having to create a new instance each time. once create Result ensure memory_not_void: Result /= Void end invariant reflector_not_void: reflector /= Void reflected_object_not_void: reflected_object /= Void deserializer_not_void: deserializer /= Void object_references_not_void: object_references /= Void note library: "EiffelBase: Library of reusable components for Eiffel." copyright: "Copyright (c) 1984-2017, 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_SESSION_DESERIALIZER
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