cppcheck/lib/check.h

194 lines
6.4 KiB
C++

/*
* 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 checkH
#define checkH
#include "token.h"
#include "tokenize.h"
#include "settings.h"
#include "errorlogger.h"
#include <list>
#include <iostream>
#include <set>
/// @addtogroup Core
/// @{
/**
* @brief Interface class that cppcheck uses to communicate with the checks.
* All checking classes must inherit from this class
*/
class Check {
public:
/** This constructor is used when registering the CheckClass */
explicit Check(const std::string &aname);
/** This constructor is used when running checks. */
Check(const std::string &aname, const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger)
: _tokenizer(tokenizer), _settings(settings), _errorLogger(errorLogger), _name(aname)
{ }
virtual ~Check() {
#if !defined(DJGPP) && !defined(__sun)
instances().remove(this);
#endif
}
/** List of registered check classes. This is used by Cppcheck to run checks and generate documentation */
static std::list<Check *> &instances() {
static std::list<Check *> _instances;
return _instances;
}
/**
* analyse code - must be thread safe
* @param tokens The tokens to analyse
* @param result container where results are stored
*/
virtual void analyse(const Token *tokens, std::set<std::string> &result) const {
// suppress compiler warnings
(void)tokens;
(void)result;
}
/**
* Save analysis data - the caller ensures thread safety
* @param data The data where the results are saved
*/
virtual void saveAnalysisData(const std::set<std::string> &data) const {
// suppress compiler warnings
(void)data;
}
/** run checks, the token list is not simplified */
virtual void runChecks(const Tokenizer *, const Settings *, ErrorLogger *)
{ }
/** run checks, the token list is simplified */
virtual void runSimplifiedChecks(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger) = 0;
/** get error messages */
virtual void getErrorMessages(ErrorLogger *errorLogger, const Settings *settings) const = 0;
/** class name, used to generate documentation */
const std::string& name() const {
return _name;
}
/** get information about this class, used to generate documentation */
virtual std::string classInfo() const = 0;
/**
* Write given error to errorlogger or to out stream in xml format.
* This is for for printout out the error list with --errorlist
* @param errmsg Error message to write
*/
static void reportError(const ErrorLogger::ErrorMessage &errmsg) {
std::cout << errmsg.toXML(true, 1) << std::endl;
}
bool inconclusiveFlag() const {
return _settings && _settings->inconclusive;
}
protected:
const Tokenizer * const _tokenizer;
const Settings * const _settings;
ErrorLogger * const _errorLogger;
/** report an error */
void reportError(const Token *tok, const Severity::SeverityType severity, const std::string &id, const std::string &msg) {
std::list<const Token *> callstack;
if (tok)
callstack.push_back(tok);
reportError(callstack, severity, id, msg);
}
/** report an error */
void reportError(const std::list<const Token *> &callstack, Severity::SeverityType severity, const std::string &id, const std::string& msg) {
reportError(callstack, severity, id, msg, false);
}
/** report an inconclusive error */
void reportInconclusiveError(const Token *tok, const Severity::SeverityType severity, const std::string &id, const std::string &msg) {
std::list<const Token *> callstack;
if (tok)
callstack.push_back(tok);
reportInconclusiveError(callstack, severity, id, msg);
}
/** report an inconclusive error */
void reportInconclusiveError(const std::list<const Token *> &callstack, Severity::SeverityType severity, const std::string &id, const std::string& msg) {
reportError(callstack, severity, id, msg, true);
}
private:
const std::string _name;
/** disabled assignment operator */
void operator=(const Check &);
/** report an error */
void reportError(const std::list<const Token *> &callstack, Severity::SeverityType severity, const std::string &id, const std::string& msg, bool inconclusive) {
std::list<ErrorLogger::ErrorMessage::FileLocation> locationList;
for (std::list<const Token *>::const_iterator it = callstack.begin(); it != callstack.end(); ++it) {
// --errorlist can provide null values here
if (!(*it))
continue;
ErrorLogger::ErrorMessage::FileLocation loc;
loc.line = (*it)->linenr();
loc.setfile(_tokenizer->list.file(*it));
locationList.push_back(loc);
}
ErrorLogger::ErrorMessage errmsg(locationList, severity, msg, id, inconclusive);
if (_tokenizer && !_tokenizer->list.getFiles().empty())
errmsg.file0 = _tokenizer->list.getFiles()[0];
if (_errorLogger)
_errorLogger->reportErr(errmsg);
else
reportError(errmsg);
}
};
namespace std {
/** compare the names of Check classes, used when sorting the Check descendants */
template <> struct less<Check *> {
bool operator()(const Check *p1, const Check *p2) const {
return (p1->name() < p2->name());
}
};
}
inline Check::Check(const std::string &aname)
: _tokenizer(0), _settings(0), _errorLogger(0), _name(aname)
{
instances().push_back(this);
instances().sort(std::less<Check *>());
}
/// @}
#endif