note description: "Byte code for multi-branch expression." legal: "See notice at end of class." status: "See notice at end of class." date: "$Date$" revision: "$Revision$" class INSPECT_EXPRESSION_B inherit ABSTRACT_INSPECT_B [CASE_EXPRESSION_B, EXPR_B] undefine free_register, get_register, need_enlarging, print_register redefine analyze, enlarged, register, set_register end EXPR_B undefine assigns_to, calls_special_features, enlarge_tree, generate, inlined_byte_code, is_unsafe, optimized_byte_node, pre_inlined_code, size redefine analyze, enlarged, free_register, register, set_register, unanalyze end create make feature -- Visitor process (v: BYTE_NODE_VISITOR) -- Process current element. do v.process_inspect_expression_b (Current) end feature -- Access type: TYPE_A -- Expression type. feature -- Status report has_else_code: BOOLEAN = True -- is_expression: BOOLEAN = True -- feature -- Modification set_type (t: like type) -- Set `type` to `t`. do type := t ensure type_set: type = t end feature -- Access: C code generation register: REGISTRABLE -- feature -- Code generation: C used (r: REGISTRABLE): BOOLEAN -- do Result := switch.used (r) or else attached else_part as p and then p.used (r) or else attached case_list as cs and then ∃ c: cs ¦ c.used (r) end set_register (r: REGISTRABLE) -- do register := r end free_register -- do if attached register as r then r.free_register else check register_attached: False end end end analyze do -- Allocate a register for the expression result. get_register -- Do the analysis. Precursor {ABSTRACT_INSPECT_B} end unanalyze -- do Precursor register := Void end enlarged: INSPECT_EXPRESSION_B -- do switch := switch.enlarged if attached case_list as c then c.enlarge_tree end if attached else_part as p then else_part := p.enlarged end Result := Current end feature {NONE} -- Code generation: C generate_effect (c: EXPR_B) -- do generate_frozen_debugger_hook c.generate_for_attachment (register, type) end ;note copyright: "Copyright (c) 1984-2020, 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 5949 Hollister Ave., Goleta, CA 93117 USA Telephone 805-685-1006, Fax 805-685-6869 Website http://www.eiffel.com Customer support http://support.eiffel.com ]" end