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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2012 Daniel Marjamäki and 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 CheckUnusedVarH
#define CheckUnusedVarH
//---------------------------------------------------------------------------
#include "config.h"
#include "check.h"
#include "settings.h"
class Token;
class Scope;
class Variables;
/// @addtogroup Checks
/// @{
/** @brief Various small checks */
class CPPCHECKLIB CheckUnusedVar : public Check {
public:
/** @brief This constructor is used when registering the CheckClass */
CheckUnusedVar() : Check(myName())
{ }
/** @brief This constructor is used when running checks. */
CheckUnusedVar(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger)
: Check(myName(), tokenizer, settings, errorLogger)
{ }
/** @brief Run checks against the normal token list */
void runChecks(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger) {
CheckUnusedVar checkUnusedVar(tokenizer, settings, errorLogger);
// Coding style checks
checkUnusedVar.checkStructMemberUsage();
checkUnusedVar.checkFunctionVariableUsage();
}
/** @brief Run checks against the simplified token list */
void runSimplifiedChecks(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger) {
(void)tokenizer;
(void)settings;
(void)errorLogger;
}
/** @brief %Check for unused function variables */
void checkFunctionVariableUsage_iterateScopes(const Scope* const scope, Variables& variables);
void checkVariableUsage(const Scope* const scope, const Token* start, Variables& variables);
void checkFunctionVariableUsage();
/** @brief %Check that all struct members are used */
void checkStructMemberUsage();
private:
// Error messages..
void unusedStructMemberError(const Token *tok, const std::string &structname, const std::string &varname);
void unusedVariableError(const Token *tok, const std::string &varname);
void allocatedButUnusedVariableError(const Token *tok, const std::string &varname);
void unreadVariableError(const Token *tok, const std::string &varname);
void unassignedVariableError(const Token *tok, const std::string &varname);
void getErrorMessages(ErrorLogger *errorLogger, const Settings *settings) const {
CheckUnusedVar c(0, settings, errorLogger);
// style/warning
c.unusedVariableError(0, "varname");
c.allocatedButUnusedVariableError(0, "varname");
c.unreadVariableError(0, "varname");
c.unassignedVariableError(0, "varname");
c.unusedStructMemberError(0, "structname", "variable");
}
static std::string myName() {
return "UnusedVar";
}
std::string classInfo() const {
return "UnusedVar checks\n"
// style
"* unused variable\n"
"* allocated but unused variable\n"
"* unred variable\n"
"* unassigned variable\n"
"* unused struct member\n";
}
};
/// @}
//---------------------------------------------------------------------------
#endif
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