/src/tools/syntax/tree/liberty_ast_expression_remainder.e

 1-- This file is part of Liberty Eiffel.
 2--
 3-- Liberty Eiffel is free software: you can redistribute it and/or modify
 4-- it under the terms of the GNU General Public License as published by
 5-- the Free Software Foundation, version 3 of the License.
 6--
 7-- Liberty Eiffel is distributed in the hope that it will be useful,
 8-- but WITHOUT ANY WARRANTY; without even the implied warranty of
 9-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
10-- GNU General Public License for more details.
11--
12-- You should have received a copy of the GNU General Public License
13-- along with Liberty Eiffel.  If not, see <http://www.gnu.org/licenses/>.
14--
15deferred class LIBERTY_AST_EXPRESSION_REMAINDER[E_ -> LIBERTY_AST_NON_TERMINAL_NODE]
16
17inherit
18   LIBERTY_AST_NON_TERMINAL_NODE
19
20feature {LIBERTY_AST_HANDLER}
21   expression: E_ is
22      require
23         not is_empty
24      do
25         Result ::= nodes.item(nodes.upper-1)
26      end
27
28   remainder: like Current is
29      require
30         not is_empty
31      do
32         Result ::= nodes.last
33      end
34
35feature {ANY}
36   count: INTEGER is
37      do
38         Result := nodes.count
39      end
40
41feature {}
42   possible_counts: SET[INTEGER] is
43      once
44         Result := {AVL_SET[INTEGER] << 0, 3 >> }
45      end
46
47end