/src/lib/backtracking/node/backtracking_node_or_pair.e

 1-- This file is part of a Liberty Eiffel library.
 2-- See the full copyright at the end.
 3--
 4class BACKTRACKING_NODE_OR_PAIR
 5   --
 6   -- Node for an alternative of 2 nodes
 7   --
 8
 9inherit
10   BACKTRACKING_NODE_BINARY
11
12create {ANY}
13   make
14
15feature {ANY}
16   explore (explorer: BACKTRACKING)
17      do
18         -- Tell to evaluate 'first' now.
19         explorer.set_current_node(first)
20         -- Push 'second' in front of the possible alternatives.
21         explorer.push_or(second)
22      end
23
24feature {}
25   do_fill_tagged_out_memory
26      do
27         tagged_out_memory.append(once "(")
28         first.fill_tagged_out_memory
29         tagged_out_memory.append(once ") or (")
30         second.fill_tagged_out_memory
31         tagged_out_memory.append(once ")")
32      end
33
34end -- class BACKTRACKING_NODE_OR_PAIR
35--
36-- Copyright (C) 2009-2017: by all the people cited in the AUTHORS file.
37--
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39-- of this software and associated documentation files (the "Software"), to deal
40-- in the Software without restriction, including without limitation the rights
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42-- copies of the Software, and to permit persons to whom the Software is
43-- furnished to do so, subject to the following conditions:
44--
45-- The above copyright notice and this permission notice shall be included in
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47--
48-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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