File indexing completed on 2024-05-12 05:41:01

 /*
     SPDX-FileCopyrightText: 2019 Sergio Martins <smartins@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #include "heap-allocated-small-trivial-type.h"
 #include "ClazyContext.h"
 #include "QtUtils.h"
 #include "StmtBodyRange.h"
 #include "TypeUtils.h"
 #include "Utils.h"
 
 #include <clang/AST/AST.h>
 
 using namespace clang;
 
 HeapAllocatedSmallTrivialType::HeapAllocatedSmallTrivialType(const std::string &name, ClazyContext *context)
     : CheckBase(name, context)
 {
 }
 
 void HeapAllocatedSmallTrivialType::VisitDecl(clang::Decl *decl)
 {
     auto *varDecl = dyn_cast<VarDecl>(decl);
     if (!varDecl) {
         return;
     }
 
     Expr *init = varDecl->getInit();
     if (!init) {
         return;
     }
 
     auto *newExpr = dyn_cast<CXXNewExpr>(init);
     if (!newExpr || newExpr->getNumPlacementArgs() > 0) { // Placement new, user probably knows what he's doing
         return;
     }
 
     if (newExpr->isArray()) {
         return;
     }
 
     DeclContext *context = varDecl->getDeclContext();
     FunctionDecl *fDecl = context ? dyn_cast<FunctionDecl>(context) : nullptr;
     if (!fDecl) {
         return;
     }
 
     QualType qualType = newExpr->getType()->getPointeeType();
     if (clazy::isSmallTrivial(m_context, qualType)) {
         if (clazy::contains(qualType.getAsString(), "Private")) {
             // Possibly a pimpl, forward declared in header
             return;
         }
 
         auto *body = fDecl->getBody();
         if (Utils::isAssignedTo(body, varDecl) || Utils::isPassedToFunction(StmtBodyRange(body), varDecl, false) || Utils::isReturned(body, varDecl)) {
             return;
         }
 
         emitWarning(init, "Don't heap-allocate small trivially copyable/destructible types: " + qualType.getAsString(lo()));
     }
 }