/src/tools/interpreter/builtins/liberty_interpreter_external_type_pointer_builtins.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_INTERPRETER_EXTERNAL_TYPE_POINTER_BUILTINS
16
17insert
18   LIBERTY_INTERPRETER_EXTERNAL_BUILTINS_CALLER
19
20creation {LIBERTY_INTERPRETER_EXTERNAL_BUILTIN_CALL}
21   make
22
23feature {LIBERTY_INTERPRETER_EXTERNAL_BUILTIN_CALL}
24   call (builtin_call: LIBERTY_INTERPRETER_FEATURE_CALL): LIBERTY_INTERPRETER_OBJECT is
25      local
26         target: LIBERTY_INTERPRETER_OBJECT_NATIVE[POINTER]
27      do
28         last_call_failed := False
29         inspect
30            builtin_call.name
31         when "is_not_null" then
32            target ::= builtin_call.target
33            Result := interpreter.new_boolean(target /= Void and then target.item.is_not_null, builtin_call.position)
34         else
35            last_call_failed := True
36         end
37      end
38
39end -- class LIBERTY_INTERPRETER_EXTERNAL_TYPE_POINTER_BUILTINS