indexing
	description: 
		"AST representation ao an alternative of a multi_branch instruction"
	date: "$Date$"
	revision: "$Revision$"

class
	CASE_AS

inherit
	AST_EIFFEL
		redefine
			is_equivalent, location
		end

feature {AST_FACTORY} -- Initialization

	initialize (i: like interval; c: like compound; l: like location) is
			-- Create a new WHEN AST node.
		require
			i_not_void: i /= Void
		do
			interval := i
			compound := c
			location := l
		ensure
			interval_set: interval = i
			compound_set: compound = c
			location_set: location = l
		end

feature -- Visitor

	process (v: AST_VISITOR) is
			-- process current element.
		do
			v.process_case_as (Current)
		end

feature -- Attributes

	interval: EIFFEL_LIST [INTERVAL_AS];
			-- Interval of the alternative

	compound: EIFFEL_LIST [INSTRUCTION_AS];
			-- Compound

feature -- Comparison

	is_equivalent (other: like Current): BOOLEAN is
			-- Is `other' equivalent to the current object ?
		do
			Result := equivalent (compound, other.compound) and
				equivalent (interval, other.interval)
		end

feature {AST_FACTORY} -- Access

	location: TOKEN_LOCATION

--feature {AST_EIFFEL} -- Output
--
--	simple_format (ctxt: FORMAT_CONTEXT) is
--			-- Reconstitute text.
--		do
--			ctxt.put_text_item (ti_When_keyword);
--			ctxt.put_space;
--			ctxt.set_separator (ti_Comma);
--			ctxt.set_no_new_line_between_tokens;
--			ctxt.format_ast (interval);
--			ctxt.put_space;
--			ctxt.put_text_item_without_tabs (ti_Then_keyword);
--			ctxt.put_space;
--			ctxt.new_line;
--			if compound /= void then
--				ctxt.indent;
--				ctxt.set_separator (ti_Semi_colon);
--				ctxt.set_new_line_between_tokens;
--				ctxt.format_ast (compound);
--				ctxt.new_line;
--				ctxt.exdent;
--			end
--			ctxt.put_breakable;
--		end

feature {CASE_AS} -- Replication

	set_interval (i: like interval) is
		require
			valid_arg: i /= Void
		do
			interval := i
		end

	set_compound (c: like compound) is
		do
			compound := c
		end

end -- class CASE_AS