/src/lib/backtracking/node/backtracking_node_not.e
Specman e | 62 lines | 23 code | 6 blank | 33 comment | 0 complexity | f574a3d290679cc01cc98a52d88435dc MD5 | raw file
1-- This file is part of a Liberty Eiffel library. 2-- See the full copyright at the end. 3-- 4class BACKTRACKING_NODE_NOT 5 -- 6 -- node that negate a node what mean that the exploration 7 -- will be continued if exploration of the subnode is stopped 8 -- and conversely. 9 -- 10 11inherit 12 BACKTRACKING_NODE_UNARY 13 14insert 15 BACKTRACKING_NODE_GLOBALS 16 17create {ANY} 18 make 19 20feature {ANY} 21 explore (explorer: BACKTRACKING) 22 do 23 -- insert a cut point 24 explorer.push_cut_point 25 -- create a call to continuation 26 explorer.push_or(the_true_node) 27 -- evaluate 'node' now 28 explorer.set_current_node(node) 29 -- and if it's a success the following node 30 -- will remove the or by a cut and will fail 31 explorer.push_and(the_cut_and_false_node) 32 end 33 34feature {} 35 do_fill_tagged_out_memory 36 do 37 tagged_out_memory.append(once "not (") 38 node.fill_tagged_out_memory 39 tagged_out_memory.append(once ")") 40 end 41 42end -- class BACKTRACKING_NODE_NOT 43-- 44-- Copyright (C) 2009-2017: by all the people cited in the AUTHORS file. 45-- 46-- Permission is hereby granted, free of charge, to any person obtaining a copy 47-- of this software and associated documentation files (the "Software"), to deal 48-- in the Software without restriction, including without limitation the rights 49-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 50-- copies of the Software, and to permit persons to whom the Software is 51-- furnished to do so, subject to the following conditions: 52-- 53-- The above copyright notice and this permission notice shall be included in 54-- all copies or substantial portions of the Software. 55-- 56-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 57-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 58-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 59-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 60-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 61-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 62-- THE SOFTWARE.