File indexing completed on 2024-04-28 16:57:50

 /*
     This file is part of the clazy static checker.
 
     Copyright (C) 2015 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
     Author: Sérgio Martins <sergio.martins@kdab.com>
 
     Copyright (C) 2015 Sergio Martins <smartins@kde.org>
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Library General Public License for more details.
 
     You should have received a copy of the GNU Library General Public License
     along with this library; see the file COPYING.LIB.  If not, write to
     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA 02110-1301, USA.
 */
 
 #ifndef FUNCTION_UTILS_H
 #define FUNCTION_UTILS_H
 
 // Contains utility functions regarding functions and methods
 
 #include "Utils.h"
 #include "HierarchyUtils.h"
 #include "StringUtils.h"
 
 #include <clang/AST/Decl.h>
 
 #include <string>
 
 namespace clazy {
 
 inline bool hasCharPtrArgument(clang::FunctionDecl *func, int expected_arguments = -1)
 {
     if (expected_arguments != -1 && (int)func->param_size() != expected_arguments)
         return false;
 
     for (auto param : Utils::functionParameters(func)) {
         clang::QualType qt = param->getType();
         const clang::Type *t = qt.getTypePtrOrNull();
         if (!t)
             continue;
 
         const clang::Type *realT = t->getPointeeType().getTypePtrOrNull();
 
         if (!realT)
             continue;
 
         if (realT->isCharType())
             return true;
     }
 
     return false;
 }
 
 inline clang::ValueDecl *valueDeclForCallArgument(clang::CallExpr *call, unsigned int argIndex)
 {
     if (!call || call->getNumArgs() <= argIndex)
         return nullptr;
 
     clang::Expr *firstArg = call->getArg(argIndex);
     auto declRef = llvm::isa<clang::DeclRefExpr>(firstArg) ? llvm::cast<clang::DeclRefExpr>(firstArg)
                                                            : clazy::getFirstChildOfType2<clang::DeclRefExpr>(firstArg);
     if (!declRef)
         return nullptr;
 
     return declRef->getDecl();
 }
 
 inline bool parametersMatch(const clang::FunctionDecl *f1, const clang::FunctionDecl *f2)
 {
     if (!f1 || !f2)
         return false;
 
     auto params1 = f1->parameters();
     auto params2 = f2->parameters();
 
     if (params1.size() != params2.size())
         return false;
 
     for (int i = 0, e = params1.size(); i < e; ++i) {
         clang::ParmVarDecl *p1 = params1[i];
         clang::ParmVarDecl *p2 = params2[i];
 
         if (p1->getType() != p2->getType())
             return false;
     }
 
     return true;
 }
 
 /**
  * Returns true if a class contains a method with a specific signature.
  * (method->getParent() doesn't need to equal record)
  */
 inline bool classImplementsMethod(const clang::CXXRecordDecl *record, const clang::CXXMethodDecl *method)
 {
     if (!method->getDeclName().isIdentifier())
         return false;
 
     llvm::StringRef methodName = clazy::name(method);
     for (auto m : record->methods()) {
         if (!m->isPure() && clazy::name(m) == methodName && parametersMatch(m, method))
             return true;
     }
 
     return false;
 }
 
 }
 #endif