/src/tools/syntax/tree/liberty_ast_expression.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--
15class LIBERTY_AST_EXPRESSION
16
17inherit
18   LIBERTY_AST_NON_TERMINAL_NODE
19
20create {LIBERTY_NODE_FACTORY}
21   make
22
23feature {LIBERTY_AST_HANDLER}
24   is_array: BOOLEAN is
25      do
26         Result := nodes.first.name.is_equal(once "Array")
27      end
28
29   array: LIBERTY_AST_ARRAY is
30      require
31         is_array
32      do
33         Result ::= nodes.first
34      end
35
36   no_array: LIBERTY_AST_EXPRESSION_NO_ARRAY is
37      require
38         not is_array
39      do
40         Result ::= nodes.first
41      end
42
43feature {ANY}
44   count: INTEGER is 1
45
46   name: STRING is "Expression"
47
48feature {}
49   possible_counts: SET[INTEGER] is
50      once
51         Result := {AVL_SET[INTEGER] << 1 >> }
52      end
53
54end