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/* -*- C++ -*-
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2025 Cppcheck team.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
//---------------------------------------------------------------------------
#ifndef checkunusedfunctionsH
#define checkunusedfunctionsH
//---------------------------------------------------------------------------
#include "config.h"
#include <list>
#include <set>
#include <string>
#include <unordered_map>
class ErrorLogger;
class Function;
class Settings;
class Tokenizer;
/** @brief Check for functions never called */
/// @{
class CPPCHECKLIB CheckUnusedFunctions {
friend class TestSuppressions;
friend class TestSingleExecutorBase;
friend class TestProcessExecutorBase;
friend class TestThreadExecutorBase;
friend class TestUnusedFunctions;
public:
CheckUnusedFunctions() = default;
// Parse current tokens and determine..
// * Check what functions are used
// * What functions are declared
void parseTokens(const Tokenizer &tokenizer, const Settings &settings);
std::string analyzerInfo() const;
static void analyseWholeProgram(const Settings &settings, ErrorLogger& errorLogger, const std::string &buildDir);
static void getErrorMessages(ErrorLogger &errorLogger) {
unusedFunctionError(errorLogger, "", 0, 0, "funcName");
}
// Return true if an error is reported.
bool check(const Settings& settings, ErrorLogger& errorLogger) const;
void updateFunctionData(const CheckUnusedFunctions& check);
private:
static void unusedFunctionError(ErrorLogger& errorLogger,
const std::string &filename, unsigned int fileIndex, unsigned int lineNumber,
const std::string &funcname);
struct CPPCHECKLIB FunctionUsage {
std::string filename;
unsigned int lineNumber{};
unsigned int fileIndex{};
bool usedSameFile{};
bool usedOtherFile{};
bool isC{};
bool isStatic{};
};
std::unordered_map<std::string, FunctionUsage> mFunctions;
class CPPCHECKLIB FunctionDecl {
public:
explicit FunctionDecl(const Function *f);
std::string functionName;
std::string fileName;
unsigned int lineNumber;
};
std::list<FunctionDecl> mFunctionDecl;
std::set<std::string> mFunctionCalls;
};
/// @}
//---------------------------------------------------------------------------
#endif // checkunusedfunctionsH
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