compilerplugins/clang/test/simplifybool.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 void f1(int a, int b)
  11 {
  12     if (!(a < b))
  13     { // expected-error@-1 {{logical negation of comparison operator, can be simplified by inverting operator [loplugin:simplifybool]}}
  14         a = b;
  15     }
  16 };
  17
  18 void f2(float a, float b)
  19 {
  20     // no warning expected
  21     if (!(a < b))
  22     {
  23         a = b;
  24     }
  25 };
  26
  27 // Consistently either warn about all or none of the below occurrences of "!!":
  28
  29 enum E1
  30 {
  31     E1_1 = 1
  32 };
  33
  34 enum E2
  35 {
  36     E2_1 = 1
  37 };
  38 E2 operator&(E2 e1, E2 e2);
  39 bool operator!(E2 e);
  40
  41 enum class E3
  42 {
  43     E1 = 1
  44 };
  45 struct W
  46 {
  47     operator bool();
  48 };
  49 W operator&(E3 e1, E3 e2);
  50
  51 bool f0(int n) { return !!(n & 1); }
  52
  53 bool f1(E1 e) { return !!(e & E1_1); }
  54
  55 bool f2(E2 e) { return !!(e & E2_1); }
  56
  57 bool f3(E3 e) { return !!(e & E3::E1); }
  58
  59 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */