compilerplugins/clang/unoany.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 #ifndef LO_CLANG_SHARED_PLUGINS
  11
  12 #include "config_clang.h"
  13
  14 #include "check.hxx"
  15 #include "plugin.hxx"
  16
  17 namespace {
  18
  19 class UnoAny:
  20     public loplugin::FilteringPlugin<UnoAny>
  21 {
  22 public:
  23     explicit UnoAny(loplugin::InstantiationData const & data): FilteringPlugin(data) {}
  24
  25     bool preRun() override {
  26         return compiler.getLangOpts().CPlusPlus;
  27     }
  28
  29     void run() override {
  30         if (preRun()) {
  31             TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
  32         }
  33     }
  34
  35     bool VisitCXXOperatorCallExpr(CXXOperatorCallExpr const * expr);
  36 };
  37
  38 bool UnoAny::VisitCXXOperatorCallExpr(CXXOperatorCallExpr const * expr)
  39 {
  40     if (ignoreLocation(expr)) {
  41         return true;
  42     }
  43     StringRef aFileName = getFilenameOfLocation(
  44             compiler.getSourceManager().getSpellingLoc(expr->getBeginLoc()));
  45     if (loplugin::isSamePathname(aFileName, SRCDIR "/include/com/sun/star/uno/Any.hxx")) {
  46         return true;
  47     }
  48     if (expr->getOperator() != OO_Equal) {
  49         return true;
  50     }
  51     if (!loplugin::TypeCheck(expr->getArg(0)->getType()).Class("Any").
  52          Namespace("uno").Namespace("star").Namespace("sun").Namespace("com").GlobalNamespace())
  53     {
  54         return true;
  55     }
  56     if (auto expr2 = dyn_cast<MaterializeTemporaryExpr>(expr->getArg(1))) {
  57         if (auto expr3 = dyn_cast<CXXBindTemporaryExpr>(expr2->getSubExpr())) {
  58             if (auto expr4 = dyn_cast<CallExpr>(expr3->getSubExpr())) {
  59                 if (loplugin::DeclCheck(expr4->getDirectCallee()).Function("makeAny").
  60                     Namespace("uno").Namespace("star").Namespace("sun").Namespace("com").GlobalNamespace()) {
  61                     report(
  62                             DiagnosticsEngine::Warning,
  63                             ("unnecessary copy, rather use <<= operator directly with the 'makeAny'"
  64                              " argument"),
  65                             expr->getOperatorLoc())
  66                       << expr->getSourceRange();
  67                     return true;
  68                 }
  69             }
  70         }
  71         if (isa<CXXFunctionalCastExpr>(expr2->getSubExpr())) {
  72             //expr->getArg(1)->dump();
  73             report(
  74                     DiagnosticsEngine::Warning,
  75                     ("unnecessary copy, rather use <<= operator directly with the 'Any' constructor"
  76                      " argument"),
  77                     expr->getOperatorLoc())
  78               << expr->getSourceRange();
  79             return true;
  80         }
  81     }
  82     //expr->getArg(1)->dump();
  83     return true;
  84 }
  85
  86 loplugin::Plugin::Registration<UnoAny> unoany("unoany");
  87
  88 } // namespace
  89
  90 #endif // LO_CLANG_SHARED_PLUGINS
  91
  92 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */