note
	legal: "See notice at end of class."
	status: "See notice at end of class."

class EXPORT_NONE_I

inherit

	EXPORT_I
		redefine
			is_none
		end;
	SHARED_TEXT_ITEMS

feature -- Properties

	is_none: BOOLEAN
			-- Is the current object an instance of EXPORT_NONE_I ?
		do
			Result := True;
		end;

	same_as (other: EXPORT_I): BOOLEAN
			-- Is `other' the same as Current ?
		do
			Result := other.is_none
		end;

feature -- Comparison

	is_less alias "<" (other: EXPORT_I): BOOLEAN
			-- is Current less restrictive than other
		do
			-- never true
		end;

feature {COMPILER_EXPORTER}

	is_subset (other: EXPORT_I): BOOLEAN
			-- Is Current clients a subset or equal with
			-- `other' clients?
		do
			Result := True;
		end;

	equiv (other: EXPORT_I): BOOLEAN
			-- Is `other' equivalent to Current ?
			-- [Semantic: old_status.equiv (new_status)]
		do
			Result := True;
		end;

	valid_for (client: CLASS_C): BOOLEAN
			-- Is the export valid for class `client' ?
		do
			-- Do nothing
		end;

	concatenation (other: EXPORT_I): EXPORT_I
			-- Concatenation of Current and `other'
		do
			Result := other;
		end;

	trace
			-- Debug purpose
		do
			io.error.put_string ("NONE");
		end;

note
	copyright:	"Copyright (c) 1984-2006, Eiffel Software"
	license:	"GPL version 2 (see http://www.eiffel.com/licensing/gpl.txt)"
	licensing_options:	"http://www.eiffel.com/licensing"
	copying: "[
			This file is part of Eiffel Software's Eiffel Development Environment.
			
			Eiffel Software's Eiffel Development Environment is free
			software; you can redistribute it and/or modify it under
			the terms of the GNU General Public License as published
			by the Free Software Foundation, version 2 of the License
			(available at the URL listed under "license" above).
			
			Eiffel Software's Eiffel Development Environment is
			distributed in the hope that it will be useful,	but
			WITHOUT ANY WARRANTY; without even the implied warranty
			of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
			See the	GNU General Public License for more details.
			
			You should have received a copy of the GNU General Public
			License along with Eiffel Software's Eiffel Development
			Environment; if not, write to the Free Software Foundation,
			Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
		]"
	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