    indexing
    	description: "VARTYPE constants"
    	legal: "See notice at end of class."
    	status: "See notice at end of class."
    	date: "$Date: 2006-01-22 18:25:44 -0800 (Sun, 22 Jan 2006) $"
    	revision: "$Revision: 56675 $"

    class interface
    	ECOM_VAR_TYPE

    create
    	default_create
    			-- Process instances of classes with no creation clause.
    			-- (Default: do nothing.)
    			-- (from ANY)

    feature -- Access

    	generating_type: STRING_8
    			-- Name of current object's generating type
    			-- (type of which it is a direct instance)
    			-- (from ANY)

    	generator: STRING_8
    			-- Name of current object's generating class
    			-- (base class of the type of which it is a direct instance)
    			-- (from ANY)

    	vt_array: INTEGER_32
    			-- A Safe array of data is passed

    	vt_bool: INTEGER_32
    			-- Boolean: True = -1 False = 0

    	vt_bstr: INTEGER_32
    			-- Binary string

    	vt_byref: INTEGER_32
    			-- Pointer to data is passed

    	vt_carray: INTEGER_32
    			-- array
    			-- may appear in TYPEDESC only

    	vt_cy: INTEGER_32
    			-- Currency

    	vt_date: INTEGER_32
    			-- Date

    	vt_decimal: INTEGER_32
    			-- 16 byte fixed point

    	vt_dispatch: INTEGER_32
    			-- IDispatch*

    	vt_empty: INTEGER_32
    			-- Not specified

    	vt_error: INTEGER_32
    			-- SCODE

    	vt_hresult: INTEGER_32
    			-- HRESULT
    			-- may appear in TYPEDESC only

    	vt_i1: INTEGER_32
    			-- Character

    	vt_i2: INTEGER_32
    			-- 2-byte signed integer

    	vt_i4: INTEGER_32
    			-- 4-byte signed integer

    	vt_i8: INTEGER_32
    			-- 8-byte signed integer
    			-- may appear in TYPEDESC only

    	vt_int: INTEGER_32
    			-- integer
    			-- may appear in TYPEDESC only

    	vt_lpstr: INTEGER_32
    			-- LPSTR
    			-- may appear in TYPEDESC only

    	vt_lpwstr: INTEGER_32
    			-- LPWSTR
    			-- may appear in TYPEDESC only

    	vt_null: INTEGER_32
    			-- SQL style Null

    	vt_ptr: INTEGER_32
    			-- pointer
    			-- may appear in TYPEDESC only

    	vt_r4: INTEGER_32
    			-- 4-byte real

    	vt_r8: INTEGER_32
    			-- 8-byte real

    	vt_record: INTEGER_32
    			-- Record
    			-- may appear in TYPEDESC only

    	vt_reserved: INTEGER_32
    			-- Reserverd for Microsoft use

    	vt_safearray: INTEGER_32
    			-- Safearray
    			-- may appear in TYPEDESC only

    	vt_typemask: INTEGER_32
    			-- Typemask.

    	vt_ui1: INTEGER_32
    			-- Unsigned character

    	vt_ui2: INTEGER_32
    			-- 2-bytes unsigned integer
    			-- may appear in TYPEDESC only

    	vt_ui4: INTEGER_32
    			-- 4-bytes unsigned integer
    			-- may appear in TYPEDESC only

    	vt_ui8: INTEGER_32
    			-- 8-bytes unsigned integer
    			-- may appear in TYPEDESC only

    	vt_uint: INTEGER_32
    			-- unsigned integer
    			-- may appear in TYPEDESC only

    	vt_unknown: INTEGER_32
    			-- IUnknown*

    	vt_userdefined: INTEGER_32
    			-- User defined
    			-- may appear in TYPEDESC only

    	vt_variant: INTEGER_32
    			-- VARIANT*

    	vt_void: INTEGER_32
    			-- NULL
    			-- may appear in TYPEDESC only

    feature -- Comparison

    	frozen deep_equal (some: ANY; other: like arg #1): BOOLEAN
    			-- Are `some' and `other' either both void
    			-- or attached to isomorphic object structures?
    			-- (from ANY)
    		ensure -- from ANY
    			shallow_implies_deep: standard_equal (some, other) implies Result
    			both_or_none_void: (some = Void) implies (Result = (other = Void))
    			same_type: (Result and (some /= Void)) implies some.same_type (other)
    			symmetric: Result implies deep_equal (other, some)

    	frozen equal (some: ANY; other: like arg #1): BOOLEAN
    			-- Are `some' and `other' either both void or attached
    			-- to objects considered equal?
    			-- (from ANY)
    		ensure -- from ANY
    			definition: Result = (some = Void and other = Void) or else ((some /= Void and other /= Void) and then some.is_equal (other))

    	is_equal (other: like Current): 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.is_equal (Current)
    			consistent: standard_is_equal (other) implies Result

    	frozen standard_equal (some: ANY; other: like arg #1): BOOLEAN
    			-- Are `some' and `other' 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
    			definition: Result = (some = Void and other = Void) or else ((some /= Void and other /= Void) and then some.standard_is_equal (other))

    	frozen standard_is_equal (other: like Current): 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

    	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

    	has_boolean (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable boolean or boolen array or boolean pointer?

    	has_bstr (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable bstr or bstr array or bstr pointer?

    	has_character (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable character or character array or character pointer?

    	has_currency (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable currency or currency array or currency pointer?

    	has_date (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable date or date array or date pointer?

    	has_decimal (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable decimal or decimal array or decimal pointer?

    	has_double (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable double or double array or double pointer?

    	has_error (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable error or error array or error pointer?

    	has_hresult (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable HRESULT or HRESULT array or HRESULT pointer?

    	has_idispatch (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable IDispatch interface pointer or IDispatch interface pointer array or IDispatch interface pointer pointer?

    	has_int (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable int or int array or int pointer?

    	has_integer2 (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable short integer or short integer array or short integer pointer?

    	has_integer4 (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable long integer or long integer array or long integer pointer?

    	has_iunknown (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable IUnknown interface pointer or IUnknown interface pointer array or IUnknown interface pointer pointer?

    	has_long_long (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable long long or long long array or long long pointer?

    	has_ptr (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable ptr or ptr array or ptr pointer?

    	has_real (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable real or real array or real pointer?

    	has_unsigned_char (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable unsigned char or unsigned char array or unsigned char pointer?

    	has_unsigned_int (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable unsigned int or unsigned int array or unsigned int pointer?

    	has_unsigned_long (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable unsigned long or unsigned long array or unsigned long pointer?

    	has_unsigned_long_long (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable unsigned long long or unsigned long long array or unsigned long long pointer?

    	has_unsigned_short (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable unsigned short or unsigned short array or unsigned short pointer?

    	has_variant (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable variant or variant array or variant pointer?

    	has_void (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable void or void array or void pointer?

    	is_array (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable array?

    	is_basic (a_type: INTEGER_32): BOOLEAN
    			-- Is `a_type' basic type?

    	is_boolean (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable boolean?

    	is_bstr (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable BSTR?

    	is_byref (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable passed by reference?

    	is_carray (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable C ARRAY?

    	is_character (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable character?

    	is_currency (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable currency?

    	is_date (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable date?

    	is_decimal (variable_type: INTEGER_32): BOOLEAN
    			-- Is decimal variable?

    	is_double (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable double?

    	is_error (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable error?

    	is_hresult (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable HRESULT?

    	is_idispatch (variable_type: INTEGER_32): BOOLEAN
    			-- Is IDispatch interface pointer?

    	is_int (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable int?

    	is_integer2 (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable short integer?

    	is_integer4 (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable long integer?

    	is_iunknown (variable_type: INTEGER_32): BOOLEAN
    			-- Is IUnknown interface pointer?

    	is_long_long (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable long long?

    	is_lpstr (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable LPSTR?

    	is_lpwstr (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable LPWSTR?

    	is_ptr (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable ptr?

    	is_real (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable real?

    	is_record (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable a Record? (i.e. a C struct)

    	is_safearray (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable SAFEARRAY?

    	is_unsigned_char (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable unsigned char?

    	is_unsigned_int (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable unsigned int?

    	is_unsigned_long (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable unsigned long?

    	is_unsigned_long_long (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable unsigned long long?

    	is_unsigned_short (variable_type: INTEGER_32): BOOLEAN
    			-- Is Ivariable unsigned short?

    	is_user_defined (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable user defined?

    	is_variant (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable variant?

    	is_void (variable_type: INTEGER_32): BOOLEAN
    			-- Is variable void?

    	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))

    	valid_var_type (a_var_type: INTEGER_32): BOOLEAN
    			-- Is `a_var_type' a valid variant type?

    feature -- Duplication

    	copy (other: like Current)
    			-- 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: is_equal (other)

    	frozen deep_copy (other: like Current)
    			-- 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: like Current
    			-- New object structure recursively duplicated from Current.
    			-- (from ANY)
    		ensure -- from ANY
    			deep_equal: deep_equal (Current, Result)

    	frozen standard_copy (other: like Current)
    			-- 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: like Current
    			-- 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: like Current
    			-- New object equal to `Current'
    			-- twin calls copy; to change copying/twining semantics, redefine copy.
    			-- (from ANY)
    		ensure -- from ANY
    			twin_not_void: Result /= Void
    			is_equal: Result.is_equal (Current)

    feature -- Basic operations

    	frozen default: like Current
    			-- 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)

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

    	frozen do_nothing
    			-- Execute a null action.
    			-- (from ANY)

    feature -- Output

    	io: STD_FILES
    			-- Handle to standard file setup
    			-- (from ANY)

    	out: STRING_8
    			-- New string containing terse printable representation
    			-- of current object
    			-- Was declared in ANY as synonym of tagged_out.
    			-- (from ANY)

    	print (some: ANY)
    			-- Write terse external representation of `some'
    			-- on standard output.
    			-- (from ANY)

    	frozen tagged_out: STRING_8
    			-- New string containing terse printable representation
    			-- of current object
    			-- Was declared in ANY as synonym of out.
    			-- (from ANY)

    feature -- Platform

    	operating_environment: OPERATING_ENVIRONMENT
    			-- Objects available from the operating system
    			-- (from ANY)

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

    indexing
    	copyright: "Copyright (c) 1984-2006, Eiffel Software and others"
    	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
    	source: "[
    		Eiffel Software
    		356 Storke Road, 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 ECOM_VAR_TYPE