128 lines
4.2 KiB
C++
128 lines
4.2 KiB
C++
/*
|
|
* Cppcheck - A tool for static C/C++ code analysis
|
|
* Copyright (C) 2007-2022 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 "check.h"
|
|
#include "config.h"
|
|
|
|
#include <list>
|
|
#include <map>
|
|
#include <set>
|
|
#include <string>
|
|
|
|
class ErrorLogger;
|
|
class Function;
|
|
class Settings;
|
|
class Tokenizer;
|
|
|
|
namespace CTU {
|
|
class FileInfo;
|
|
}
|
|
|
|
/// @addtogroup Checks
|
|
/** @brief Check for functions never called */
|
|
/// @{
|
|
|
|
class CPPCHECKLIB CheckUnusedFunctions : public Check {
|
|
public:
|
|
/** @brief This constructor is used when registering the CheckUnusedFunctions */
|
|
CheckUnusedFunctions() : Check(myName()) {}
|
|
|
|
/** @brief This constructor is used when running checks. */
|
|
CheckUnusedFunctions(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger)
|
|
: Check(myName(), tokenizer, settings, errorLogger) {}
|
|
|
|
static void clear() {
|
|
instance.mFunctions.clear();
|
|
instance.mFunctionCalls.clear();
|
|
}
|
|
|
|
// Parse current tokens and determine..
|
|
// * Check what functions are used
|
|
// * What functions are declared
|
|
void parseTokens(const Tokenizer &tokenizer, const char FileName[], const Settings *settings);
|
|
|
|
// Return true if an error is reported.
|
|
bool check(ErrorLogger * const errorLogger, const Settings& settings);
|
|
|
|
/** @brief Parse current TU and extract file info */
|
|
Check::FileInfo *getFileInfo(const Tokenizer *tokenizer, const Settings *settings) const override;
|
|
|
|
/** @brief Analyse all file infos for all TU */
|
|
bool analyseWholeProgram(const CTU::FileInfo *ctu, const std::list<Check::FileInfo*> &fileInfo, const Settings& settings, ErrorLogger &errorLogger) override;
|
|
|
|
static CheckUnusedFunctions instance;
|
|
|
|
std::string analyzerInfo() const;
|
|
|
|
/** @brief Combine and analyze all analyzerInfos for all TUs */
|
|
static void analyseWholeProgram(ErrorLogger * const errorLogger, const std::string &buildDir);
|
|
|
|
private:
|
|
|
|
void getErrorMessages(ErrorLogger *errorLogger, const Settings * /*settings*/) const override {
|
|
CheckUnusedFunctions::unusedFunctionError(errorLogger, emptyString, 0, "funcName");
|
|
}
|
|
|
|
void runChecks(const Tokenizer * /*tokenizer*/, const Settings * /*settings*/, ErrorLogger * /*errorLogger*/) override {}
|
|
|
|
/**
|
|
* Dummy implementation, just to provide error for --errorlist
|
|
*/
|
|
static void unusedFunctionError(ErrorLogger * const errorLogger,
|
|
const std::string &filename, unsigned int lineNumber,
|
|
const std::string &funcname);
|
|
|
|
static std::string myName() {
|
|
return "Unused functions";
|
|
}
|
|
|
|
std::string classInfo() const override {
|
|
return "Check for functions that are never called\n";
|
|
}
|
|
|
|
class CPPCHECKLIB FunctionUsage {
|
|
public:
|
|
FunctionUsage() : lineNumber(0), usedSameFile(false), usedOtherFile(false) {}
|
|
|
|
std::string filename;
|
|
unsigned int lineNumber;
|
|
bool usedSameFile;
|
|
bool usedOtherFile;
|
|
};
|
|
|
|
std::map<std::string, FunctionUsage> mFunctions;
|
|
|
|
class CPPCHECKLIB FunctionDecl {
|
|
public:
|
|
explicit FunctionDecl(const Function *f);
|
|
std::string functionName;
|
|
unsigned int lineNumber;
|
|
};
|
|
std::list<FunctionDecl> mFunctionDecl;
|
|
std::set<std::string> mFunctionCalls;
|
|
};
|
|
/// @}
|
|
//---------------------------------------------------------------------------
|
|
#endif // checkunusedfunctionsH
|