indexing
	description	: "Information about a call in the calling stack."
	legal: "See notice at end of class."
	status: "See notice at end of class."
	date		: "$Date$"
	revision	: "$Revision $"

deferred class CALL_STACK_ELEMENT

inherit

	COMPILER_EXPORTER

	SHARED_EIFFEL_PROJECT

	SHARED_CONFIGURE_RESOURCES
		export
			{NONE} all
		end

feature {NONE} -- Initialization

	make (level: INTEGER; tid: INTEGER) is
		require
			valid_level: level >= 1
		do
			level_in_stack := level
			thread_id := tid
		end

feature -- Properties

	is_not_valid: BOOLEAN
			-- Current call stack element is not valid ?
			-- (i.e: issue retrieving the data...)

	is_eiffel_call_stack_element: BOOLEAN is
			-- Is, Current, an eiffel call stack element or not (external stack) ?
		deferred
		end

	class_name: STRING
			-- Associated class name

	routine_name: STRING
			-- Associated routine name

	level_in_stack: INTEGER
			-- Where is this element situated in the call stack?
			-- 1 means on the top.

	thread_id: INTEGER

	break_index: INTEGER
			-- the "Line number" where application is stopped within current feature

	object_address: STRING is
			-- Hector address of associated object
			--| Because the debugger is already in communication with
			--| the application (retrieving information such as locals ...)
			--| it doesn't ask an hector address for that object until
			--| the "line" between the two processes is free.
			--| Initialially it is the physical address but is then
			--| protected in the `set_hector_addr_for_current_object' routine.
		deferred
		end

feature -- Output

	display_arguments (st: TEXT_FORMATTER) is
			-- Display the arguments passed to the routine
			-- associated with Current call.
		deferred
		end

	display_locals (st: TEXT_FORMATTER) is
			-- Display the local entities and result (if it exists) of
			-- the routine associated with Current call.
		deferred
		end

	display_feature (st: TEXT_FORMATTER) is
			-- Display information about associated routine.
		deferred
		end

	display_object_address: like object_address is
		deferred
		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 CALL_STACK_ELEMENT