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/*
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;
}
inline bool isPureVirtual(const clang::CXXMethodDecl *decl)
{
#if LLVM_VERSION_MAJOR >= 18
return decl->isPureVirtual();
#else
return decl->isPure();
#endif
}
/**
* 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 (!clazy::isPureVirtual(m) && clazy::name(m) == methodName && parametersMatch(m, method))
return true;
}
return false;
}
}
#endif
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