note
	description: "Serialize/Deserialize data from a medium."
	legal: "See notice at end of class."
	status: "See notice at end of class."
	date: "$Date: 2017-09-25 15:53:33 +0000 (Mon, 25 Sep 2017) $"
	revision: "$Revision: 100789 $"

class interface
	SED_MEDIUM_READER_WRITER

create 
	make (a_medium: IO_MEDIUM)
			-- Initialize current to read or write from a_medium.
		require
			a_medium_not_void: a_medium /= Void
			a_medium_support_storable: a_medium.support_storable
		ensure
			medium_set: medium = a_medium
			buffer_size_set: buffer_size = Default_buffer_size

	make_for_reading (a_medium: IO_MEDIUM)
			-- Initialize current to read from a_medium.
		require
			a_medium_not_void: a_medium /= Void
			a_medium_open_for_reading: a_medium.is_open_read
			a_medium_support_storable: a_medium.support_storable
		ensure
			medium_set: medium = a_medium
			buffer_size_set: buffer_size = Default_buffer_size

	make_for_writing (a_medium: IO_MEDIUM)
			-- Initialize current to write to a_medium.
		require
			a_medium_not_void: a_medium /= Void
			a_medium_open_for_writing: a_medium.is_open_write
			a_medium_support_storable: a_medium.support_storable
		ensure
			medium_set: medium = a_medium
			buffer_size_set: buffer_size = Default_buffer_size

	make_with_buffer (a_medium: IO_MEDIUM; a_buffer_size: INTEGER_32)
			-- Initialize current to read or write from a_medium using a buffer of size a_buffer_size.
			-- buffer_size will be overriden during read operation by the value of buffer_size used
			-- when writing.
		require
			a_medium_not_void: a_medium /= Void
			a_buffer_size_non_negative: a_buffer_size >= 0
			a_medium_support_storable: a_medium.support_storable
		ensure
			medium_set: medium = a_medium
			buffer_size_set: buffer_size = a_buffer_size
			buffer_size_set: buffer.count = a_buffer_size

feature -- Access

	generating_type: TYPE [detachable SED_MEDIUM_READER_WRITER]
			-- Type of current object
			-- (type of which it is a direct instance)
			-- (from ANY)
		ensure -- from ANY
			generating_type_not_void: Result /= Void

	generator: STRING_8
			-- Name of current object's generating class
			-- (base class of the type of which it is a direct instance)
			-- (from ANY)
		ensure -- from ANY
			generator_not_void: Result /= Void
			generator_not_empty: not Result.is_empty

	read_boolean: BOOLEAN
			-- Read next boolean
			-- (from SED_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	read_character_32: CHARACTER_32
			-- Read next 32-bits character
			-- (from SED_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	read_character_8: CHARACTER_8
			-- Read next 8-bits character
			-- (from SED_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	read_compressed_integer_32: INTEGER_32
			-- Read next compressed integer_32.
			-- See read_compressed_natural_32 for more details about encoding.
			-- (from SED_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	read_compressed_natural_32: NATURAL_32
			-- Read next compressed natural_32.
			-- Depending on first natural_8 value read, it will tell how much more we need to read:
			-- 1 - Of the form 0xxxxxxx (0x00) for values between 0 and 127
			-- 2 - Of the form 10xxxxxx (0x80) for values between 128 and 16382 and one more to read.
			-- 3 - Of the form 110xxxxx (0xC0) for values between 16383 and 2097150 and 2 more to read.
			-- 4 - Of the form 1110xxxx (0xE0) for values between 2097151 and 268435454 and 3 more to read
			-- 5 - Otherwise a full natural_32 to read.
			-- (from SED_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	read_immutable_string_32: IMMUTABLE_STRING_32
			-- Read next sequence of characters encoded in UTF-8 as an IMMUTABLE_STRING_32.
			-- (from SED_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading
		ensure -- from SED_READER_WRITER
			read_string_8_not_void: Result /= Void

	read_immutable_string_8: IMMUTABLE_STRING_8
			-- Read next 8-bits sequence of character as an IMMUTABLE_STRING_8
			-- (from SED_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading
		ensure -- from SED_READER_WRITER
			read_immutable_string_8_not_void: Result /= Void

	read_integer_16: INTEGER_16
			-- Read next integer_16
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	read_integer_32: INTEGER_32
			-- Read next integer_32
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	read_integer_64: INTEGER_64
			-- Read next integer_64
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	read_integer_8: INTEGER_8
			-- Read next integer_8
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	read_natural_16: NATURAL_16
			-- Read next natural_16
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	read_natural_32: NATURAL_32
			-- Read next natural_32
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	read_natural_64: NATURAL_64
			-- Read next natural_64
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	read_natural_8: NATURAL_8
			-- Read next natural_8
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	read_pointer: POINTER
			-- Read next pointer
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	read_real_32: REAL_32
			-- Read next real_32
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	read_real_64: REAL_64
			-- Read next real_64
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	read_string_32: STRING_32
			-- Read next sequence of characters encoded in UTF-8.
			-- (from SED_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading
		ensure -- from SED_READER_WRITER
			read_string_8_not_void: Result /= Void

	read_string_8: STRING_8
			-- Read next 8-bits sequence of character
			-- (from SED_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading
		ensure -- from SED_READER_WRITER
			read_string_8_not_void: Result /= Void

	Reader_writer_version_6_6: NATURAL_32 = 1
			-- Version of format used for reading/writing.
	
feature -- Comparison

	frozen deep_equal (a: detachable ANY; b: like arg #1): BOOLEAN
			-- Are a and b either both void
			-- or attached to isomorphic object structures?
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			shallow_implies_deep: standard_equal (a, b) implies Result
			both_or_none_void: (a = Void) implies (Result = (b = Void))
			same_type: (Result and (a /= Void)) implies (b /= Void and then a.same_type (b))
			symmetric: Result implies deep_equal (b, a)

	frozen equal (a: detachable ANY; b: like arg #1): BOOLEAN
			-- Are a and b either both void or attached
			-- to objects considered equal?
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.is_equal (b))

	frozen is_deep_equal alias "≡≡≡" (other: SED_MEDIUM_READER_WRITER): BOOLEAN
			-- Are Current and other attached to isomorphic object structures?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			shallow_implies_deep: standard_is_equal (other) implies Result
			same_type: Result implies same_type (other)
			symmetric: Result implies other.is_deep_equal (Current)

	is_equal (other: SED_MEDIUM_READER_WRITER): BOOLEAN
			-- Is other attached to an object considered
			-- equal to current object?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			symmetric: Result implies other ~ Current
			consistent: standard_is_equal (other) implies Result

	frozen standard_equal (a: detachable ANY; b: like arg #1): BOOLEAN
			-- Are a and b either both void or attached to
			-- field-by-field identical objects of the same type?
			-- Always uses default object comparison criterion.
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.standard_is_equal (b))

	frozen standard_is_equal alias "≜" (other: SED_MEDIUM_READER_WRITER): BOOLEAN
			-- Is other attached to an object of the same type
			-- as current object, and field-by-field identical to it?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			same_type: Result implies same_type (other)
			symmetric: Result implies other.standard_is_equal (Current)
	
feature -- Status report

	cleanup
			-- When a reading is stopped, perform the necessary cleanup to perform
			-- another reading or writing.
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	conforms_to (other: ANY): BOOLEAN
			-- Does type of current object conform to type
			-- of other (as per Eiffel: The Language, chapter 13)?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void

	is_for_reading: BOOLEAN
			-- Will current do a read operation?
			-- (from SED_BINARY_READER_WRITER)

	is_last_chunk: BOOLEAN
			-- Are we reading the last chunk?

	is_pointer_value_stored: BOOLEAN
			-- Is value of a POINTER stored?
			-- (from SED_READER_WRITER)

	is_ready_for_reading: BOOLEAN
			-- Is Current ready for future read operations?
		require -- from  SED_READER_WRITER
			True

	is_ready_for_writing: BOOLEAN
			-- Is Current ready for future write operations?
		require -- from  SED_READER_WRITER
			True

	same_type (other: ANY): BOOLEAN
			-- Is type of current object identical to type of other?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			definition: Result = (conforms_to (other) and other.conforms_to (Current))
	
feature -- Element change

	write_boolean (v: BOOLEAN)
			-- Write v.
			-- (from SED_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing

	write_character_32 (v: CHARACTER_32)
			-- Write v.
			-- (from SED_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing

	write_character_8 (v: CHARACTER_8)
			-- Write v.
			-- (from SED_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing

	write_compressed_integer_32 (v: INTEGER_32)
			-- Write v as a compressed integer_32.
			-- See write_compressed_natural_32 for details about encoding.
			-- (from SED_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing

	write_compressed_natural_32 (v: NATURAL_32)
			-- Write v as a compressed natural_32.
			-- Depending on value of v, it will tell how many natural_8 will
			-- be written. Below here is the actual encoding where x represents
			-- a meaningful bit for v and the last number in parenthesis is the
			-- marker value in hexadecimal which is added to the value of v.
			-- 1 - For values between 0 and 127, write 0xxxxxxx (0x00).
			-- 2 - For values between 128 and 16382, write 0x10xxxxxx xxxxxxxx (0xE0).
			-- 3 - For values between 16383 and 2097150, write 0x110xxxxx xxxxxxxx xxxxxxxx (0xC0).
			-- 4 - For values between 2097151 and 268435454, write 0x1110xxx xxxxxxxx xxxxxxxx xxxxxxxx (0xE0).
			-- 5 - Otherwise write v as a full natural_32.
			-- (from SED_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing

	write_integer_16 (v: INTEGER_16)
			-- Write v.
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing

	write_integer_32 (v: INTEGER_32)
			-- Write v.
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing

	write_integer_64 (v: INTEGER_64)
			-- Write v.
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing

	write_integer_8 (v: INTEGER_8)
			-- Write v.
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing

	write_natural_16 (v: NATURAL_16)
			-- Write v.
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing

	write_natural_32 (v: NATURAL_32)
			-- Write v.
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing

	write_natural_64 (v: NATURAL_64)
			-- Write v.
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing

	write_natural_8 (v: NATURAL_8)
			-- Write v.
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing

	write_pointer (v: POINTER)
			-- Write v.
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing

	write_real_32 (v: REAL_32)
			-- Write v.
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing

	write_real_64 (v: REAL_64)
			-- Write v.
			-- (from SED_BINARY_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing

	write_string_32 (v: READABLE_STRING_GENERAL)
			-- Write v in UTF-8 format.
			-- (from SED_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing
			v_not_void: v /= Void

	write_string_8 (v: READABLE_STRING_8)
			-- Write v.
			-- (from SED_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing
			v_not_void: v /= Void
	
feature -- Duplication

	copy (other: SED_MEDIUM_READER_WRITER)
			-- Update current object using fields of object attached
			-- to other, so as to yield equal objects.
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
			type_identity: same_type (other)
		ensure -- from ANY
			is_equal: Current ~ other

	frozen deep_copy (other: SED_MEDIUM_READER_WRITER)
			-- Effect equivalent to that of:
			--		copy (other . deep_twin)
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			deep_equal: deep_equal (Current, other)

	frozen deep_twin: SED_MEDIUM_READER_WRITER
			-- New object structure recursively duplicated from Current.
			-- (from ANY)
		ensure -- from ANY
			deep_twin_not_void: Result /= Void
			deep_equal: deep_equal (Current, Result)

	frozen standard_copy (other: SED_MEDIUM_READER_WRITER)
			-- Copy every field of other onto corresponding field
			-- of current object.
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
			type_identity: same_type (other)
		ensure -- from ANY
			is_standard_equal: standard_is_equal (other)

	frozen standard_twin: SED_MEDIUM_READER_WRITER
			-- New object field-by-field identical to other.
			-- Always uses default copying semantics.
			-- (from ANY)
		ensure -- from ANY
			standard_twin_not_void: Result /= Void
			equal: standard_equal (Result, Current)

	frozen twin: SED_MEDIUM_READER_WRITER
			-- New object equal to Current
			-- twin calls copy; to change copying/twinning semantics, redefine copy.
			-- (from ANY)
		ensure -- from ANY
			twin_not_void: Result /= Void
			is_equal: Result ~ Current
	
feature -- Basic operations

	frozen default: detachable SED_MEDIUM_READER_WRITER
			-- Default value of object's type
			-- (from ANY)

	frozen default_pointer: POINTER
			-- Default value of type POINTER
			-- (Avoid the need to write p.default for
			-- some p of type POINTER.)
			-- (from ANY)
		ensure -- from ANY
			instance_free: class

	default_rescue
			-- Process exception for routines with no Rescue clause.
			-- (Default: do nothing.)
			-- (from ANY)

	frozen do_nothing
			-- Execute a null action.
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
	
feature -- Access bits size

	boolean_bits: INTEGER_32
			-- Number of bits in a value of type BOOLEAN
			-- (from PLATFORM)
		ensure -- from PLATFORM
			instance_free: class

	Character_32_bits: INTEGER_32 = 32
			-- Number of bits in a value of type CHARACTER_32
			-- (from PLATFORM)

	Character_8_bits: INTEGER_32 = 8
			-- Number of bits in a value of type CHARACTER_8
			-- (from PLATFORM)

	Integer_16_bits: INTEGER_32 = 16
			-- Number of bits in a value of type INTEGER_16
			-- (from PLATFORM)

	Integer_32_bits: INTEGER_32 = 32
			-- Number of bits in a value of type INTEGER_32
			-- (from PLATFORM)

	Integer_64_bits: INTEGER_32 = 64
			-- Number of bits in a value of type INTEGER_64
			-- (from PLATFORM)

	Integer_8_bits: INTEGER_32 = 8
			-- Number of bits in a value of type INTEGER_8
			-- (from PLATFORM)

	Natural_16_bits: INTEGER_32 = 16
			-- Number of bits in a value of type NATURAL_16
			-- (from PLATFORM)

	Natural_32_bits: INTEGER_32 = 32
			-- Number of bits in a value of type NATURAL_32
			-- (from PLATFORM)

	Natural_64_bits: INTEGER_32 = 64
			-- Number of bits in a value of type NATURAL_64
			-- (from PLATFORM)

	Natural_8_bits: INTEGER_32 = 8
			-- Number of bits in a value of type NATURAL_8
			-- (from PLATFORM)

	pointer_bits: INTEGER_32
			-- Number of bits in a value of type POINTER
			-- (from PLATFORM)
		ensure -- from PLATFORM
			instance_free: class

	Real_32_bits: INTEGER_32 = 32
			-- Number of bits in a value of type REAL_32
			-- (from PLATFORM)

	Real_64_bits: INTEGER_32 = 64
			-- Number of bits in a value of type REAL_64
			-- (from PLATFORM)
	
feature -- Access bytes size

	boolean_bytes: INTEGER_32
			-- Number of bytes in a value of type BOOLEAN
			-- (from PLATFORM)
		ensure -- from PLATFORM
			instance_free: class

	Character_32_bytes: INTEGER_32 = 4
			-- Number of bytes in a value of type CHARACTER_32
			-- (from PLATFORM)

	Character_8_bytes: INTEGER_32 = 1
			-- Number of bytes in a value of type CHARACTER_8
			-- (from PLATFORM)

	Integer_16_bytes: INTEGER_32 = 2
			-- Number of bytes in a value of type INTEGER_16
			-- (from PLATFORM)

	Integer_32_bytes: INTEGER_32 = 4
			-- Number of bytes in a value of type INTEGER_32
			-- (from PLATFORM)

	Integer_64_bytes: INTEGER_32 = 8
			-- Number of bytes in a value of type INTEGER_64
			-- (from PLATFORM)

	Integer_8_bytes: INTEGER_32 = 1
			-- Number of bytes in a value of type INTEGER_8
			-- (from PLATFORM)

	Natural_16_bytes: INTEGER_32 = 2
			-- Number of bytes in a value of type NATURAL_16
			-- (from PLATFORM)

	Natural_32_bytes: INTEGER_32 = 4
			-- Number of bytes in a value of type NATURAL_32
			-- (from PLATFORM)

	Natural_64_bytes: INTEGER_32 = 8
			-- Number of bytes in a value of type NATURAL_64
			-- (from PLATFORM)

	Natural_8_bytes: INTEGER_32 = 1
			-- Number of bytes in a value of type NATURAL_8
			-- (from PLATFORM)

	pointer_bytes: INTEGER_32
			-- Number of bytes in a value of type POINTER
			-- (from PLATFORM)
		ensure -- from PLATFORM
			instance_free: class

	Real_32_bytes: INTEGER_32 = 4
			-- Number of bytes in a value of type REAL_32
			-- (from PLATFORM)

	Real_64_bytes: INTEGER_32 = 8
			-- Number of bytes in a value of type REAL_64
			-- (from PLATFORM)
	
feature -- Header/Footer

	read_footer
			-- Action being executed after finishing to read data.
			-- (from SED_READER_WRITER)
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	read_header
			-- Retrieve configuration of how data was stored.
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_reading

	write_chunk_header
			-- Store information about chunks

	write_footer
			-- Store last buffered data.
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing

	write_header
			-- Store configuration on how data will be stored.
		require -- from SED_READER_WRITER
			is_ready: is_ready_for_writing
	
feature -- Output

	Io: STD_FILES
			-- Handle to standard file setup
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			io_not_void: Result /= Void

	out: STRING_8
			-- New string containing terse printable representation
			-- of current object
			-- (from ANY)
		ensure -- from ANY
			out_not_void: Result /= Void

	print (o: detachable ANY)
			-- Write terse external representation of o
			-- on standard output.
			-- (from ANY)
		ensure -- from ANY
			instance_free: class

	frozen tagged_out: STRING_8
			-- New string containing terse printable representation
			-- of current object
			-- (from ANY)
		ensure -- from ANY
			tagged_out_not_void: Result /= Void
	
feature -- Platform

	is_64_bits: BOOLEAN
			-- Is the current process runing in 64-bit mode
			-- (from PLATFORM)
		ensure -- from PLATFORM
			instance_free: class

	is_dotnet: BOOLEAN
			-- Are we targetting .NET?
			-- (from PLATFORM)
		ensure -- from PLATFORM
			instance_free: class

	Is_little_endian: BOOLEAN
			-- Is current platform a little endian one?
			-- (from PLATFORM)
		ensure -- from PLATFORM
			instance_free: class

	is_mac: BOOLEAN
			-- Are we running on Mac OS?
			-- (from PLATFORM)
		ensure -- from PLATFORM
			instance_free: class

	is_scoop_capable: BOOLEAN
			-- Is current platform capable of SCOOP?
			-- (from PLATFORM)
		ensure -- from PLATFORM
			instance_free: class

	is_thread_capable: BOOLEAN
			-- Is current platform capable of multi-threading?
			-- (from PLATFORM)
		ensure -- from PLATFORM
			instance_free: class

	is_unix: BOOLEAN
			-- Are we running on a Unix like platform?
			-- (from PLATFORM)
		ensure -- from PLATFORM
			instance_free: class

	is_vms: BOOLEAN
			-- Are we running on VMS?
			-- (from PLATFORM)
		ensure -- from PLATFORM
			instance_free: class

	is_vxworks: BOOLEAN
			-- Are we running on VxWorks?
			-- (from PLATFORM)
		ensure -- from PLATFORM
			instance_free: class

	is_windows: BOOLEAN
			-- Are we running on Windows platform?
			-- (from PLATFORM)
		ensure -- from PLATFORM
			instance_free: class

	Operating_environment: OPERATING_ENVIRONMENT
			-- Objects available from the operating system
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			operating_environment_not_void: Result /= Void
	
feature -- Settings

	set_for_reading
			-- Set current for reading.
			-- (from SED_BINARY_READER_WRITER)
		ensure -- from SED_BINARY_READER_WRITER
			is_for_reading: is_for_reading

	set_for_writing
			-- Set current for writing.
			-- (from SED_BINARY_READER_WRITER)
		ensure -- from SED_BINARY_READER_WRITER
			is_for_writing: not is_for_reading

	set_is_pointer_value_stored (v: like is_pointer_value_stored)
			-- Set is_pointer_value_stored with v.
			-- (from SED_READER_WRITER)
		ensure -- from SED_READER_WRITER
			is_pointer_value_stored_set: is_pointer_value_stored = v
	
invariant
	medium_not_void: medium /= Void

		-- from SED_BINARY_READER_WRITER
	buffer_not_void: buffer /= Void
	buffer_size_non_negative: buffer_size >= 0
	buffer_position_non_negative: buffer_position >= 0
	stored_pointer_bytes_non_negative: stored_pointer_bytes >= 0

		-- from ANY
	reflexive_equality: standard_is_equal (Current)
	reflexive_conformance: conforms_to (Current)

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_MEDIUM_READER_WRITER

Generated by ISE EiffelStudio