indexing
	description: "Stone that has a file name associated with it."
	legal: "See notice at end of class."
	status: "See notice at end of class."
	date: "$Date$"
	revision: "$Revision $"

deferred class
	FILED_STONE 

inherit
	STONE
		undefine
			header
		redefine
			is_valid
		end
	
feature -- Access

	file_name: STRING is 
			-- Name of the file which parsing led 
			-- to the creation of current AST node
		deferred
		end;

	origin_text: STRING is
			-- Content of the file named `file_name';
			-- Void if unreadable file
		require else
			true
		local
			a_file: RAW_FILE
		do
			if is_valid then
				create a_file.make (file_name);
				if a_file.exists and then a_file.is_readable then
					a_file.open_read;
					a_file.readstream (a_file.count);
					a_file.close;
					Result := a_file.last_string
				end
			end
		end

feature -- Setting

	set_file_name (s: STRING) is
			-- Assign `s' to `file_name'.
		deferred
		end

feature -- Status report

	is_valid: BOOLEAN is
			-- Is `Current' a valid stone?
		do
			Result := file_name /= Void
		ensure then
			Result implies file_name /= Void
		end

indexing
	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 -- class FILED_STONE