compilerplugins/clang/test/buriedassign.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 #include <map>
  11 #include <rtl/ustring.hxx>
  12
  13 namespace test1
  14 {
  15 int foo(int);
  16
  17 void main()
  18 {
  19     int x = 1;
  20     foo(x = 2); // expected-error {{buried assignment, very hard to read [loplugin:buriedassign]}}
  21     int y = x = 1; // no warning expected
  22     (void)y;
  23     int z = foo(
  24         x = 1); // expected-error {{buried assignment, very hard to read [loplugin:buriedassign]}}
  25     (void)z;
  26     switch (x = 1)
  27     { // expected-error@-1 {{buried assignment, very hard to read [loplugin:buriedassign]}}
  28     }
  29     std::map<int, int> map1;
  30     map1[x = 1]
  31         = 1; // expected-error@-1 {{buried assignment, very hard to read [loplugin:buriedassign]}}
  32 }
  33 }
  34
  35 namespace test2
  36 {
  37 struct MyInt
  38 {
  39     int x;
  40     MyInt(int i)
  41         : x(i)
  42     {
  43     }
  44     MyInt& operator=(MyInt const&) = default;
  45     MyInt& operator=(int) { return *this; }
  46     bool operator<(MyInt const& other) const { return x < other.x; }
  47 };
  48
  49 MyInt foo(MyInt);
  50
  51 void main()
  52 {
  53     MyInt x = 1;
  54     foo(x = 2); // expected-error {{buried assignment, very hard to read [loplugin:buriedassign]}}
  55     MyInt y = x = 1; // no warning expected
  56     (void)y;
  57     MyInt z = foo(
  58         x = 1); // expected-error {{buried assignment, very hard to read [loplugin:buriedassign]}}
  59     (void)z;
  60     z = x; // no warning expected
  61     std::map<MyInt, int> map1;
  62     map1[x = 1]
  63         = 1; // expected-error@-1 {{buried assignment, very hard to read [loplugin:buriedassign]}}
  64 }
  65 }
  66
  67 namespace test3
  68 {
  69 void main(OUString sUserAutoCorrFile, OUString sExt)
  70 {
  71     OUString sRet;
  72     if (sUserAutoCorrFile == "xxx")
  73         sRet = sUserAutoCorrFile; // no warning expected
  74     if (sUserAutoCorrFile == "yyy")
  75         (sRet = sUserAutoCorrFile)
  76             += sExt; // expected-error@-1 {{buried assignment, very hard to read [loplugin:buriedassign]}}
  77 }
  78 }
  79
  80 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */