/src/tools/syntax/tree/liberty_ast_exp3.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_EXP3
16
17inherit
18   LIBERTY_AST_EXPRESSION_BINARY[LIBERTY_AST_E3]
19
20create {LIBERTY_NODE_FACTORY}
21   make
22
23feature {LIBERTY_AST_HANDLER}
24   is_and_then: BOOLEAN is
25      do
26         Result := count = 4
27         check
28            Result implies nodes.item(1).name.is_equal(once "KW and")
29            Result implies nodes.item(2).name.is_equal(once "KW then")
30         end
31      ensure
32         Result implies not is_empty
33      end
34
35   is_and: BOOLEAN is
36      do
37         Result := count = 3
38         check
39            Result implies nodes.item(1).name.is_equal(once "KW and")
40         end
41      end
42
43feature {ANY}
44   name: STRING is "e3-exp"
45
46end