File indexing completed on 2024-05-19 05:41:39

 /*
     SPDX-FileCopyrightText: 2016 Sergio Martins <smartins@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #include "child-event-qobject-cast.h"
 #include "HierarchyUtils.h"
 #include "QtUtils.h"
 #include "StringUtils.h"
 #include "clazy_stl.h"
 
 #include <clang/AST/Decl.h>
 #include <clang/AST/DeclBase.h>
 #include <clang/AST/DeclCXX.h>
 #include <clang/AST/Expr.h>
 #include <clang/AST/ExprCXX.h>
 #include <clang/AST/Stmt.h>
 #include <clang/Basic/LLVM.h>
 #include <llvm/ADT/StringRef.h>
 #include <llvm/Support/Casting.h>
 
 #include <vector>
 
 class ClazyContext;
 
 using namespace clang;
 
 ChildEventQObjectCast::ChildEventQObjectCast(const std::string &name, ClazyContext *context)
     : CheckBase(name, context, Option_CanIgnoreIncludes)
 {
 }
 
 void ChildEventQObjectCast::VisitDecl(Decl *decl)
 {
     auto *childEventMethod = dyn_cast<CXXMethodDecl>(decl);
     if (!childEventMethod) {
         return;
     }
 
     Stmt *body = decl->getBody();
     if (!body) {
         return;
     }
 
     auto methodName = childEventMethod->getNameAsString();
     if (!clazy::equalsAny(methodName, {"event", "childEvent", "eventFilter"})) {
         return;
     }
 
     if (!clazy::isQObject(childEventMethod->getParent())) {
         return;
     }
 
     auto callExprs = clazy::getStatements<CallExpr>(body, &(sm()));
     for (auto *callExpr : callExprs) {
         if (callExpr->getNumArgs() != 1) {
             continue;
         }
 
         FunctionDecl *fdecl = callExpr->getDirectCallee();
         if (fdecl && clazy::name(fdecl) == "qobject_cast") {
             auto *childCall = dyn_cast<CXXMemberCallExpr>(callExpr->getArg(0));
             // The call to event->child()
             if (!childCall) {
                 continue;
             }
 
             auto *childFDecl = childCall->getDirectCallee();
             if (!childFDecl || childFDecl->getQualifiedNameAsString() != "QChildEvent::child") {
                 continue;
             }
 
             emitWarning(childCall, "qobject_cast in childEvent");
         }
     }
 }