cppcheck/lib/suppressions.h

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/*
* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2023 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 suppressionsH
#define suppressionsH
//---------------------------------------------------------------------------
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#include "config.h"
#include <cstddef>
#include <istream>
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#include <list>
#include <set>
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#include <string>
#include <utility>
#include <vector>
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/// @addtogroup Core
/// @{
class Tokenizer;
class ErrorMessage;
class ErrorLogger;
enum class Certainty;
/** @brief class for handling suppressions */
class CPPCHECKLIB Suppressions {
public:
enum class Type {
unique, file, block, blockBegin, blockEnd, macro
};
struct CPPCHECKLIB ErrorMessage {
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std::size_t hash;
std::string errorId;
void setFileName(std::string s);
const std::string &getFileName() const {
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return mFileName;
}
int lineNumber;
Certainty certainty;
std::string symbolNames;
std::set<std::string> macroNames;
static Suppressions::ErrorMessage fromErrorMessage(const ::ErrorMessage &msg, const std::set<std::string> &macroNames);
private:
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std::string mFileName;
};
struct CPPCHECKLIB Suppression {
Suppression() = default;
Suppression(std::string id, std::string file, int line=NO_LINE) : errorId(std::move(id)), fileName(std::move(file)), lineNumber(line) {}
bool operator<(const Suppression &other) const {
if (errorId != other.errorId)
return errorId < other.errorId;
if (lineNumber < other.lineNumber)
return true;
if (fileName != other.fileName)
return fileName < other.fileName;
if (symbolName != other.symbolName)
return symbolName < other.symbolName;
if (macroName != other.macroName)
return macroName < other.macroName;
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if (hash != other.hash)
return hash < other.hash;
if (thisAndNextLine != other.thisAndNextLine)
return thisAndNextLine;
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return false;
}
bool operator==(const Suppression &other) const {
if (errorId != other.errorId)
return false;
if (lineNumber < other.lineNumber)
return false;
if (fileName != other.fileName)
return false;
if (symbolName != other.symbolName)
return false;
if (macroName != other.macroName)
return false;
if (hash != other.hash)
return false;
if (type != other.type)
return false;
if (lineBegin != other.lineBegin)
return false;
if (lineEnd != other.lineEnd)
return false;
return true;
}
/**
* Parse inline suppression in comment
* @param comment the full comment text
* @param errorMessage output parameter for error message (wrong suppression attribute)
* @return true if it is a inline comment.
*/
bool parseComment(std::string comment, std::string *errorMessage);
bool isSuppressed(const ErrorMessage &errmsg) const;
bool isMatch(const ErrorMessage &errmsg);
std::string getText() const;
bool isLocal() const {
return !fileName.empty() && fileName.find_first_of("?*") == std::string::npos;
}
bool isSameParameters(const Suppression &other) const {
return errorId == other.errorId &&
fileName == other.fileName &&
lineNumber == other.lineNumber &&
symbolName == other.symbolName &&
hash == other.hash &&
thisAndNextLine == other.thisAndNextLine;
}
std::string errorId;
std::string fileName;
int lineNumber = NO_LINE;
int lineBegin = NO_LINE;
int lineEnd = NO_LINE;
Type type = Type::unique;
std::string symbolName;
std::string macroName;
std::size_t hash{};
bool thisAndNextLine{}; // Special case for backwards compatibility: { // cppcheck-suppress something
bool matched{};
bool checked{}; // for inline suppressions, checked or not
enum { NO_LINE = -1 };
};
/**
* @brief Don't show errors listed in the file.
* @param istr Open file stream where errors can be read.
* @return error message. empty upon success
*/
std::string parseFile(std::istream &istr);
/**
* @brief Don't show errors listed in the file.
* @param filename file name
* @return error message. empty upon success
*/
std::string parseXmlFile(const char *filename);
/**
* Parse multi inline suppression in comment
* @param comment the full comment text
* @param errorMessage output parameter for error message (wrong suppression attribute)
* @return empty vector if something wrong.
*/
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static std::vector<Suppression> parseMultiSuppressComment(const std::string &comment, std::string *errorMessage);
/**
* @brief Don't show the given error.
* @param line Description of error to suppress (in id:file:line format).
* @return error message. empty upon success
*/
std::string addSuppressionLine(const std::string &line);
/**
* @brief Don't show this error. File and/or line are optional. In which case
* the errorId alone is used for filtering.
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* @param suppression suppression details
* @return error message. empty upon success
*/
std::string addSuppression(Suppression suppression);
/**
* @brief Combine list of suppressions into the current suppressions.
* @param suppressions list of suppression details
* @return error message. empty upon success
*/
std::string addSuppressions(std::list<Suppression> suppressions);
/**
* @brief Returns true if this message should not be shown to the user.
* @param errmsg error message
* @param global use global suppressions
* @return true if this error is suppressed.
*/
bool isSuppressed(const ErrorMessage &errmsg, bool global = true);
/**
* @brief Returns true if this message should not be shown to the user.
* @param errmsg error message
* @return true if this error is suppressed.
*/
bool isSuppressed(const ::ErrorMessage &errmsg, const std::set<std::string>& macroNames);
/**
* @brief Create an xml dump of suppressions
* @param out stream to write XML to
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*/
void dump(std::ostream &out) const;
/**
* @brief Returns list of unmatched local (per-file) suppressions.
* @return list of unmatched suppressions
*/
std::list<Suppression> getUnmatchedLocalSuppressions(const std::string &file, const bool unusedFunctionChecking) const;
/**
* @brief Returns list of unmatched global (glob pattern) suppressions.
* @return list of unmatched suppressions
*/
std::list<Suppression> getUnmatchedGlobalSuppressions(const bool unusedFunctionChecking) const;
/**
* @brief Returns list of all suppressions.
* @return list of suppressions
*/
const std::list<Suppression> &getSuppressions() const;
/**
* @brief Marks Inline Suppressions as checked if source line is in the token stream
*/
void markUnmatchedInlineSuppressionsAsChecked(const Tokenizer &tokenizer);
/**
* Report unmatched suppressions
* @param unmatched list of unmatched suppressions (from Settings::Suppressions::getUnmatched(Local|Global)Suppressions)
* @return true is returned if errors are reported
*/
static bool reportUnmatchedSuppressions(const std::list<Suppressions::Suppression> &unmatched, ErrorLogger &errorLogger);
private:
/** @brief List of error which the user doesn't want to see. */
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std::list<Suppression> mSuppressions;
};
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/// @}
//---------------------------------------------------------------------------
#endif // suppressionsH