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cppcheck.cpp
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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2024 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/>.
*/
#include "cppcheck.h"
#include "addoninfo.h"
#include "analyzerinfo.h"
#include "check.h"
#include "checkunusedfunctions.h"
#include "clangimport.h"
#include "color.h"
#include "ctu.h"
#include "errorlogger.h"
#include "errortypes.h"
#include "filesettings.h"
#include "library.h"
#include "path.h"
#include "platform.h"
#include "preprocessor.h"
#include "settings.h"
#include "standards.h"
#include "suppressions.h"
#include "timer.h"
#include "token.h"
#include "tokenize.h"
#include "tokenlist.h"
#include "utils.h"
#include "valueflow.h"
#include "version.h"
#include <algorithm>
#include <cassert>
#include <cstdio>
#include <cstdint>
#include <cstring>
#include <cctype>
#include <cstdlib>
#include <ctime>
#include <exception> // IWYU pragma: keep
#include <fstream>
#include <iostream>
#include <map>
#include <new>
#include <set>
#include <sstream>
#include <stdexcept>
#include <string>
#include <unordered_set>
#include <utility>
#include <vector>
#include "json.h"
#include <simplecpp.h>
#include "xml.h"
#ifdef HAVE_RULES
#ifdef _WIN32
#define PCRE_STATIC
#endif
#include <pcre.h>
#endif
class SymbolDatabase;
static constexpr char Version[] = CPPCHECK_VERSION_STRING;
static constexpr char ExtraVersion[] = "";
static constexpr char FILELIST[] = "cppcheck-addon-ctu-file-list";
static TimerResults s_timerResults;
// CWE ids used
static const CWE CWE398(398U); // Indicator of Poor Code Quality
class CppCheck::CppCheckLogger : public ErrorLogger
{
public:
CppCheckLogger(ErrorLogger& errorLogger, const Settings& settings, Suppressions& suppressions, bool useGlobalSuppressions)
: mErrorLogger(errorLogger)
, mSettings(settings)
, mSuppressions(suppressions)
, mUseGlobalSuppressions(useGlobalSuppressions)
{}
~CppCheckLogger() override
{
closePlist();
}
void setRemarkComments(std::vector<RemarkComment> remarkComments)
{
mRemarkComments = std::move(remarkComments);
}
void setLocationMacros(const Token* startTok, const std::vector<std::string>& files)
{
mLocationMacros.clear();
for (const Token* tok = startTok; tok; tok = tok->next()) {
if (!tok->getMacroName().empty())
mLocationMacros[Location(files[tok->fileIndex()], tok->linenr())].emplace(tok->getMacroName());
}
}
void resetExitCode()
{
mExitCode = 0;
}
void clear()
{
mErrorList.clear();
}
void openPlist(const std::string& filename, const std::vector<std::string>& files)
{
mPlistFile.open(filename);
mPlistFile << ErrorLogger::plistHeader(version(), files);
}
void closePlist()
{
if (mPlistFile.is_open()) {
mPlistFile << ErrorLogger::plistFooter();
mPlistFile.close();
}
}
unsigned int exitcode() const
{
return mExitCode;
}
void setAnalyzerInfo(AnalyzerInformation* info)
{
mAnalyzerInformation = info;
}
private:
/**
* @brief Errors and warnings are directed here.
*
* @param msg Errors messages are normally in format
* "[filepath:line number] Message", e.g.
* "[main.cpp:4] Uninitialized member variable"
*/
// TODO: part of this logic is duplicated in Executor::hasToLog()
void reportErr(const ErrorMessage &msg) override
{
if (msg.severity == Severity::internal) {
mErrorLogger.reportErr(msg);
return;
}
if (!mSettings.library.reportErrors(msg.file0))
return;
std::set<std::string> macroNames;
if (!msg.callStack.empty()) {
const std::string &file = msg.callStack.back().getfile(false);
int lineNumber = msg.callStack.back().line;
const auto it = mLocationMacros.find(Location(file, lineNumber));
if (it != mLocationMacros.cend())
macroNames = it->second;
}
// TODO: only convert if necessary
const auto errorMessage = SuppressionList::ErrorMessage::fromErrorMessage(msg, macroNames);
if (mSuppressions.nomsg.isSuppressed(errorMessage, mUseGlobalSuppressions)) {
// Safety: Report critical errors to ErrorLogger
if (mSettings.safety && ErrorLogger::isCriticalErrorId(msg.id)) {
mExitCode = 1;
if (mSuppressions.nomsg.isSuppressedExplicitly(errorMessage, mUseGlobalSuppressions)) {
// Report with internal severity to signal that there is this critical error but
// it is suppressed
ErrorMessage temp(msg);
temp.severity = Severity::internal;
mErrorLogger.reportErr(temp);
} else {
// Report critical error that is not explicitly suppressed
mErrorLogger.reportErr(msg);
}
}
return;
}
// TODO: there should be no need for the verbose and default messages here
std::string errmsg = msg.toString(mSettings.verbose);
if (errmsg.empty())
return;
// Alert only about unique errors.
// This makes sure the errors of a single check() call are unique.
// TODO: get rid of this? This is forwarded to another ErrorLogger which is also doing this
if (!mSettings.emitDuplicates && !mErrorList.emplace(std::move(errmsg)).second)
return;
if (mAnalyzerInformation)
mAnalyzerInformation->reportErr(msg);
if (!mSuppressions.nofail.isSuppressed(errorMessage) && !mSuppressions.nomsg.isSuppressed(errorMessage)) {
mExitCode = 1;
}
std::string remark;
if (!msg.callStack.empty()) {
for (const auto& r: mRemarkComments) {
if (r.file != msg.callStack.back().getfile(false))
continue;
if (r.lineNumber != msg.callStack.back().line)
continue;
remark = r.str;
break;
}
}
if (!remark.empty()) {
ErrorMessage msg2(msg);
msg2.remark = std::move(remark);
mErrorLogger.reportErr(msg2);
} else {
mErrorLogger.reportErr(msg);
}
// check if plistOutput should be populated and the current output file is open and the error is not suppressed
if (!mSettings.plistOutput.empty() && mPlistFile.is_open() && !mSuppressions.nomsg.isSuppressed(errorMessage)) {
// add error to plist output file
mPlistFile << ErrorLogger::plistData(msg);
}
}
/**
* @brief Information about progress is directed here.
*
* @param outmsg Message to show, e.g. "Checking main.cpp..."
*/
void reportOut(const std::string &outmsg, Color c = Color::Reset) override
{
mErrorLogger.reportOut(outmsg, c);
}
void reportProgress(const std::string &filename, const char stage[], const std::size_t value) override
{
mErrorLogger.reportProgress(filename, stage, value);
}
ErrorLogger &mErrorLogger;
const Settings& mSettings;
Suppressions& mSuppressions;
bool mUseGlobalSuppressions;
// TODO: store hashes instead of the full messages
std::unordered_set<std::string> mErrorList;
std::vector<RemarkComment> mRemarkComments;
using Location = std::pair<std::string, int>;
std::map<Location, std::set<std::string>> mLocationMacros; // What macros are used on a location?
std::ofstream mPlistFile;
unsigned int mExitCode{};
AnalyzerInformation* mAnalyzerInformation{};
};
// File deleter
namespace {
class FilesDeleter {
public:
FilesDeleter() = default;
~FilesDeleter() {
for (const std::string& fileName: mFilenames)
std::remove(fileName.c_str());
}
void addFile(const std::string& fileName) {
mFilenames.push_back(fileName);
}
private:
std::vector<std::string> mFilenames;
};
}
static std::string cmdFileName(std::string f)
{
f = Path::toNativeSeparators(std::move(f));
if (f.find(' ') != std::string::npos)
return "\"" + f + "\"";
return f;
}
static std::vector<std::string> split(const std::string &str, const std::string &sep=" ")
{
std::vector<std::string> ret;
for (std::string::size_type startPos = 0U; startPos < str.size();) {
startPos = str.find_first_not_of(sep, startPos);
if (startPos == std::string::npos)
break;
if (str[startPos] == '\"') {
const std::string::size_type endPos = str.find('\"', startPos + 1);
ret.push_back(str.substr(startPos + 1, endPos - startPos - 1));
startPos = (endPos < str.size()) ? (endPos + 1) : endPos;
continue;
}
const std::string::size_type endPos = str.find(sep, startPos + 1);
ret.push_back(str.substr(startPos, endPos - startPos));
startPos = endPos;
}
return ret;
}
static std::string getDumpFileName(const Settings& settings, const std::string& filename)
{
std::string extension;
if (settings.dump || !settings.buildDir.empty())
extension = ".dump";
else
extension = "." + std::to_string(settings.pid) + ".dump";
if (!settings.dump && !settings.buildDir.empty())
return AnalyzerInformation::getAnalyzerInfoFile(settings.buildDir, filename, "") + extension;
return filename + extension;
}
static std::string getCtuInfoFileName(const std::string &dumpFile)
{
return dumpFile.substr(0, dumpFile.size()-4) + "ctu-info";
}
static void createDumpFile(const Settings& settings,
const FileWithDetails& file,
std::ofstream& fdump,
std::string& dumpFile)
{
if (!settings.dump && settings.addons.empty())
return;
dumpFile = getDumpFileName(settings, file.spath());
fdump.open(dumpFile);
if (!fdump.is_open())
return;
if (!settings.buildDir.empty()) {
std::ofstream fout(getCtuInfoFileName(dumpFile));
}
// TODO: enforcedLang should be already applied in FileWithDetails object
std::string language;
switch (settings.enforcedLang) {
case Standards::Language::C:
language = " language=\"c\"";
break;
case Standards::Language::CPP:
language = " language=\"cpp\"";
break;
case Standards::Language::None:
{
// TODO: get language from FileWithDetails object
// TODO: error out on unknown language?
const Standards::Language lang = Path::identify(file.spath(), settings.cppHeaderProbe);
if (lang == Standards::Language::CPP)
language = " language=\"cpp\"";
else if (lang == Standards::Language::C)
language = " language=\"c\"";
break;
}
}
fdump << "<?xml version=\"1.0\"?>\n";
fdump << "<dumps" << language << ">\n";
fdump << " <platform"
<< " name=\"" << settings.platform.toString() << '\"'
<< " char_bit=\"" << static_cast<unsigned>(settings.platform.char_bit) << '\"'
<< " short_bit=\"" << static_cast<unsigned>(settings.platform.short_bit) << '\"'
<< " int_bit=\"" << static_cast<unsigned>(settings.platform.int_bit) << '\"'
<< " long_bit=\"" << static_cast<unsigned>(settings.platform.long_bit) << '\"'
<< " long_long_bit=\"" << static_cast<unsigned>(settings.platform.long_long_bit) << '\"'
<< " pointer_bit=\"" << (settings.platform.sizeof_pointer * settings.platform.char_bit) << '\"'
<< " wchar_t_bit=\"" << (settings.platform.sizeof_wchar_t * settings.platform.char_bit) << '\"'
<< " size_t_bit=\"" << (settings.platform.sizeof_size_t * settings.platform.char_bit) << '\"'
<< "/>" << '\n';
}
static std::string detectPython(const CppCheck::ExecuteCmdFn &executeCommand)
{
#ifdef _WIN32
const char *py_exes[] = { "python3.exe", "python.exe" };
#else
const char *py_exes[] = { "python3", "python" };
#endif
for (const char* py_exe : py_exes) {
std::string out;
#ifdef _MSC_VER
// FIXME: hack to avoid debug assertion with _popen() in executeCommand() for non-existing commands
const std::string cmd = std::string(py_exe) + " --version >NUL 2>&1";
if (system(cmd.c_str()) != 0) {
// TODO: get more detailed error?
continue;
}
#endif
if (executeCommand(py_exe, split("--version"), "2>&1", out) == EXIT_SUCCESS && startsWith(out, "Python ") && std::isdigit(out[7])) {
return py_exe;
}
}
return "";
}
static std::vector<picojson::value> executeAddon(const AddonInfo &addonInfo,
const std::string &defaultPythonExe,
const std::string &file,
const std::string &premiumArgs,
const CppCheck::ExecuteCmdFn &executeCommand)
{
const std::string redirect = "2>&1";
std::string pythonExe;
if (!addonInfo.executable.empty())
pythonExe = addonInfo.executable;
else if (!addonInfo.python.empty())
pythonExe = cmdFileName(addonInfo.python);
else if (!defaultPythonExe.empty())
pythonExe = cmdFileName(defaultPythonExe);
else {
// store in static variable so we only look this up once
static const std::string detectedPythonExe = detectPython(executeCommand);
if (detectedPythonExe.empty())
throw InternalError(nullptr, "Failed to auto detect python");
pythonExe = detectedPythonExe;
}
std::string args;
if (addonInfo.executable.empty())
args = cmdFileName(addonInfo.runScript) + " " + cmdFileName(addonInfo.scriptFile);
args += std::string(args.empty() ? "" : " ") + "--cli" + addonInfo.args;
if (!premiumArgs.empty() && !addonInfo.executable.empty())
args += " " + premiumArgs;
const bool is_file_list = (file.find(FILELIST) != std::string::npos);
const std::string fileArg = (is_file_list ? " --file-list " : " ") + cmdFileName(file);
args += fileArg;
std::string result;
if (const int exitcode = executeCommand(pythonExe, split(args), redirect, result)) {
std::string message("Failed to execute addon '" + addonInfo.name + "' - exitcode is " + std::to_string(exitcode));
std::string details = pythonExe + " " + args;
if (result.size() > 2) {
details += "\nOutput:\n";
details += result;
const auto pos = details.find_last_not_of("\n\r");
if (pos != std::string::npos)
details.resize(pos + 1);
}
throw InternalError(nullptr, std::move(message), std::move(details));
}
std::vector<picojson::value> addonResult;
// Validate output..
std::istringstream istr(result);
std::string line;
while (std::getline(istr, line)) {
// TODO: also bail out?
if (line.empty()) {
//std::cout << "addon '" << addonInfo.name << "' result contains empty line" << std::endl;
continue;
}
// TODO: get rid of this
if (startsWith(line,"Checking ")) {
//std::cout << "addon '" << addonInfo.name << "' result contains 'Checking ' line" << std::endl;
continue;
}
if (line[0] != '{') {
//std::cout << "addon '" << addonInfo.name << "' result is not a JSON" << std::endl;
result.erase(result.find_last_not_of('\n') + 1, std::string::npos); // Remove trailing newlines
throw InternalError(nullptr, "Failed to execute '" + pythonExe + " " + args + "'. " + result);
}
//std::cout << "addon '" << addonInfo.name << "' result is " << line << std::endl;
// TODO: make these failures?
picojson::value res;
const std::string err = picojson::parse(res, line);
if (!err.empty()) {
//std::cout << "addon '" << addonInfo.name << "' result is not a valid JSON (" << err << ")" << std::endl;
continue;
}
if (!res.is<picojson::object>()) {
//std::cout << "addon '" << addonInfo.name << "' result is not a JSON object" << std::endl;
continue;
}
addonResult.emplace_back(std::move(res));
}
// Valid results
return addonResult;
}
static std::string getDefinesFlags(const std::string &semicolonSeparatedString)
{
std::string flags;
for (const std::string &d: split(semicolonSeparatedString, ";"))
flags += "-D" + d + " ";
return flags;
}
CppCheck::CppCheck(const Settings& settings,
Suppressions& supprs,
ErrorLogger &errorLogger,
bool useGlobalSuppressions,
ExecuteCmdFn executeCommand)
: mSettings(settings)
, mSuppressions(supprs)
, mLogger(new CppCheckLogger(errorLogger, mSettings, mSuppressions, useGlobalSuppressions))
, mErrorLogger(*mLogger)
, mErrorLoggerDirect(errorLogger)
, mUseGlobalSuppressions(useGlobalSuppressions)
, mExecuteCommand(std::move(executeCommand))
{}
CppCheck::~CppCheck()
{
mLogger->setAnalyzerInfo(nullptr);
while (!mFileInfo.empty()) {
delete mFileInfo.back();
mFileInfo.pop_back();
}
}
const char * CppCheck::version()
{
return Version;
}
const char * CppCheck::extraVersion()
{
return ExtraVersion;
}
static bool reportClangErrors(std::istream &is, const std::function<void(const ErrorMessage&)>& reportErr, std::vector<ErrorMessage> &warnings)
{
std::string line;
while (std::getline(is, line)) {
if (line.empty() || line[0] == ' ' || line[0] == '`' || line[0] == '-')
continue;
std::string::size_type pos3 = line.find(": error: ");
if (pos3 == std::string::npos)
pos3 = line.find(": fatal error:");
if (pos3 == std::string::npos)
pos3 = line.find(": warning:");
if (pos3 == std::string::npos)
continue;
// file:line:column: error: ....
const std::string::size_type pos2 = line.rfind(':', pos3 - 1);
const std::string::size_type pos1 = line.rfind(':', pos2 - 1);
if (pos1 >= pos2 || pos2 >= pos3)
continue;
const std::string filename = line.substr(0, pos1);
const std::string linenr = line.substr(pos1+1, pos2-pos1-1);
const std::string colnr = line.substr(pos2+1, pos3-pos2-1);
const std::string msg = line.substr(line.find(':', pos3+1) + 2);
const std::string locFile = Path::toNativeSeparators(filename);
const int line_i = strToInt<int>(linenr);
const int column = strToInt<unsigned int>(colnr);
ErrorMessage::FileLocation loc(locFile, line_i, column);
ErrorMessage errmsg({std::move(loc)},
locFile,
Severity::error,
msg,
"syntaxError",
Certainty::normal);
if (line.compare(pos3, 10, ": warning:") == 0) {
warnings.push_back(std::move(errmsg));
continue;
}
reportErr(errmsg);
return true;
}
return false;
}
std::string CppCheck::getLibraryDumpData() const {
std::string out;
for (const std::string &s : mSettings.libraries) {
out += " <library lib=\"" + s + "\"/>\n";
}
return out;
}
std::string CppCheck::getClangFlags(Standards::Language fileLang) const {
std::string flags;
const Standards::Language lang = mSettings.enforcedLang != Standards::None ? mSettings.enforcedLang : fileLang;
switch (lang) {
case Standards::Language::None:
case Standards::Language::C:
flags = "-x c ";
if (!mSettings.standards.stdValueC.empty())
flags += "-std=" + mSettings.standards.stdValueC + " ";
break;
case Standards::Language::CPP:
flags += "-x c++ ";
if (!mSettings.standards.stdValueCPP.empty())
flags += "-std=" + mSettings.standards.stdValueCPP + " ";
break;
}
for (const std::string &i: mSettings.includePaths)
flags += "-I" + i + " ";
flags += getDefinesFlags(mSettings.userDefines);
for (const std::string &i: mSettings.userIncludes)
flags += "--include " + cmdFileName(i) + " ";
return flags;
}
// TODO: clear error list before returning
unsigned int CppCheck::checkClang(const FileWithDetails &file)
{
// TODO: clear exitcode
if (mSettings.checks.isEnabled(Checks::unusedFunction) && !mUnusedFunctionsCheck)
mUnusedFunctionsCheck.reset(new CheckUnusedFunctions());
if (!mSettings.quiet)
mErrorLogger.reportOut(std::string("Checking ") + file.spath() + " ...", Color::FgGreen);
// TODO: get language from FileWithDetails object
std::string clangStderr;
if (!mSettings.buildDir.empty())
clangStderr = AnalyzerInformation::getAnalyzerInfoFile(mSettings.buildDir, file.spath(), "") + ".clang-stderr";
std::string exe = mSettings.clangExecutable;
#ifdef _WIN32
// append .exe if it is not a path
if (Path::fromNativeSeparators(mSettings.clangExecutable).find('/') == std::string::npos) {
exe += ".exe";
}
#endif
const std::string args2 = "-fsyntax-only -Xclang -ast-dump -fno-color-diagnostics " +
getClangFlags(Path::identify(file.spath(), mSettings.cppHeaderProbe)) +
file.spath();
const std::string redirect2 = clangStderr.empty() ? "2>&1" : ("2> " + clangStderr);
if (mSettings.verbose && !mSettings.quiet) {
mErrorLogger.reportOut(exe + " " + args2);
}
std::string output2;
const int exitcode = mExecuteCommand(exe,split(args2),redirect2,output2);
if (mSettings.debugClangOutput) {
std::cout << output2 << std::endl;
}
// TODO: this might also fail if compiler errors are encountered - we should report them properly
if (exitcode != EXIT_SUCCESS) {
// TODO: report as proper error
std::cerr << "Failed to execute '" << exe << " " << args2 << " " << redirect2 << "' - (exitcode: " << exitcode << " / output: " << output2 << ")" << std::endl;
return 0; // TODO: report as failure?
}
if (output2.find("TranslationUnitDecl") == std::string::npos) {
// TODO: report as proper error
std::cerr << "Failed to execute '" << exe << " " << args2 << " " << redirect2 << "' - (no TranslationUnitDecl in output)" << std::endl;
return 0; // TODO: report as failure?
}
const auto reportError = [this](const ErrorMessage& errorMessage) {
mErrorLogger.reportErr(errorMessage);
};
// Ensure there are not syntax errors...
std::vector<ErrorMessage> compilerWarnings;
if (!clangStderr.empty()) {
std::ifstream fin(clangStderr);
if (reportClangErrors(fin, reportError, compilerWarnings))
return 0; // TODO: report as failure?
} else {
std::istringstream istr(output2);
if (reportClangErrors(istr, reportError, compilerWarnings))
return 0; // TODO: report as failure?
}
try {
Tokenizer tokenizer(mSettings, mErrorLogger);
tokenizer.list.appendFileIfNew(file.spath());
std::istringstream ast(output2);
clangimport::parseClangAstDump(tokenizer, ast);
ValueFlow::setValues(tokenizer.list,
const_cast<SymbolDatabase&>(*tokenizer.getSymbolDatabase()),
mErrorLogger,
mSettings,
&s_timerResults);
if (mSettings.debugnormal)
tokenizer.printDebugOutput(1, std::cout);
checkNormalTokens(tokenizer, nullptr); // TODO: provide analyzer information
// create dumpfile
std::ofstream fdump;
std::string dumpFile;
createDumpFile(mSettings, file, fdump, dumpFile);
if (fdump.is_open()) {
// TODO: use tinyxml2 to create XML
fdump << "<dump cfg=\"\">\n";
for (const ErrorMessage& errmsg: compilerWarnings)
fdump << " <clang-warning file=\"" << ErrorLogger::toxml(errmsg.callStack.front().getfile()) << "\" line=\"" << errmsg.callStack.front().line << "\" column=\"" << errmsg.callStack.front().column << "\" message=\"" << ErrorLogger::toxml(errmsg.shortMessage()) << "\"/>\n";
fdump << " <standards>\n";
fdump << " <c version=\"" << mSettings.standards.getC() << "\"/>\n";
fdump << " <cpp version=\"" << mSettings.standards.getCPP() << "\"/>\n";
fdump << " </standards>\n";
fdump << getLibraryDumpData();
tokenizer.dump(fdump);
fdump << "</dump>\n";
fdump << "</dumps>\n";
fdump.close();
}
// run addons
executeAddons(dumpFile, file);
} catch (const InternalError &e) {
const ErrorMessage errmsg = ErrorMessage::fromInternalError(e, nullptr, file.spath(), "Bailing out from analysis: Processing Clang AST dump failed");
mErrorLogger.reportErr(errmsg);
} catch (const TerminateException &) {
// Analysis is terminated
} catch (const std::exception &e) {
internalError(file.spath(), std::string("Processing Clang AST dump failed: ") + e.what());
}
return mLogger->exitcode();
}
unsigned int CppCheck::check(const FileWithDetails &file)
{
if (mSettings.clang)
return checkClang(file);
return checkFile(file, "");
}
unsigned int CppCheck::check(const FileWithDetails &file, const std::string &content)
{
std::istringstream iss(content);
return checkFile(file, "", &iss);
}
unsigned int CppCheck::check(const FileSettings &fs)
{
// TODO: move to constructor when CppCheck no longer owns the settings
if (mSettings.checks.isEnabled(Checks::unusedFunction) && !mUnusedFunctionsCheck)
mUnusedFunctionsCheck.reset(new CheckUnusedFunctions());
Settings tempSettings = mSettings; // this is a copy
if (!tempSettings.userDefines.empty())
tempSettings.userDefines += ';';
if (mSettings.clang)
tempSettings.userDefines += fs.defines;
else
tempSettings.userDefines += fs.cppcheckDefines();
tempSettings.includePaths = fs.includePaths;
tempSettings.userUndefs.insert(fs.undefs.cbegin(), fs.undefs.cend());
if (fs.standard.find("++") != std::string::npos)
tempSettings.standards.setCPP(fs.standard);
else if (!fs.standard.empty())
tempSettings.standards.setC(fs.standard);
if (fs.platformType != Platform::Type::Unspecified)
tempSettings.platform.set(fs.platformType);
if (mSettings.clang) {
tempSettings.includePaths.insert(tempSettings.includePaths.end(), fs.systemIncludePaths.cbegin(), fs.systemIncludePaths.cend());
// need to pass the externally provided ErrorLogger instead of our internal wrapper
CppCheck temp(tempSettings, mSuppressions, mErrorLoggerDirect, mUseGlobalSuppressions, mExecuteCommand);
// TODO: propagate back mFileInfo
const unsigned int returnValue = temp.check(fs.file);
if (mUnusedFunctionsCheck)
mUnusedFunctionsCheck->updateFunctionData(*temp.mUnusedFunctionsCheck);
return returnValue;
}
// need to pass the externally provided ErrorLogger instead of our internal wrapper
CppCheck temp(tempSettings, mSuppressions, mErrorLoggerDirect, mUseGlobalSuppressions, mExecuteCommand);
const unsigned int returnValue = temp.checkFile(fs.file, fs.cfg);
if (mUnusedFunctionsCheck)
mUnusedFunctionsCheck->updateFunctionData(*temp.mUnusedFunctionsCheck);
while (!temp.mFileInfo.empty()) {
mFileInfo.push_back(temp.mFileInfo.back());
temp.mFileInfo.pop_back();
}
// TODO: propagate back more data?
return returnValue;
}
static simplecpp::TokenList createTokenList(const std::string& filename, std::vector<std::string>& files, simplecpp::OutputList* outputList, std::istream* fileStream)
{
if (fileStream)
return {*fileStream, files, filename, outputList};
return {filename, files, outputList};
}
static std::size_t calculateHash(const Preprocessor& preprocessor, const simplecpp::TokenList& tokens, const Settings& settings, const Suppressions& supprs)
{
std::ostringstream toolinfo;
toolinfo << CPPCHECK_VERSION_STRING;
toolinfo << (settings.severity.isEnabled(Severity::warning) ? 'w' : ' ');
toolinfo << (settings.severity.isEnabled(Severity::style) ? 's' : ' ');
toolinfo << (settings.severity.isEnabled(Severity::performance) ? 'p' : ' ');
toolinfo << (settings.severity.isEnabled(Severity::portability) ? 'p' : ' ');
toolinfo << (settings.severity.isEnabled(Severity::information) ? 'i' : ' ');
toolinfo << settings.userDefines;
toolinfo << std::to_string(static_cast<std::uint8_t>(settings.checkLevel));
// TODO: do we need to add more options?
supprs.nomsg.dump(toolinfo);
return preprocessor.calculateHash(tokens, toolinfo.str());
}
unsigned int CppCheck::checkFile(const FileWithDetails& file, const std::string &cfgname, std::istream* fileStream)
{
// TODO: move to constructor when CppCheck no longer owns the settings
if (mSettings.checks.isEnabled(Checks::unusedFunction) && !mUnusedFunctionsCheck)
mUnusedFunctionsCheck.reset(new CheckUnusedFunctions());
mLogger->resetExitCode();
if (Settings::terminated())
return mLogger->exitcode();
const Timer fileTotalTimer(mSettings.showtime == SHOWTIME_MODES::SHOWTIME_FILE_TOTAL, file.spath());
if (!mSettings.quiet) {
std::string fixedpath = Path::toNativeSeparators(file.spath());
mErrorLogger.reportOut(std::string("Checking ") + fixedpath + ' ' + cfgname + std::string("..."), Color::FgGreen);
if (mSettings.verbose) {
mErrorLogger.reportOut("Defines:" + mSettings.userDefines);
std::string undefs;
for (const std::string& U : mSettings.userUndefs) {
if (!undefs.empty())
undefs += ';';
undefs += ' ' + U;
}
mErrorLogger.reportOut("Undefines:" + undefs);
std::string includePaths;
for (const std::string &I : mSettings.includePaths)
includePaths += " -I" + I;
mErrorLogger.reportOut("Includes:" + includePaths);
mErrorLogger.reportOut(std::string("Platform:") + mSettings.platform.toString());
}
}
mLogger->closePlist();
std::unique_ptr<AnalyzerInformation> analyzerInformation;
try {
if (mSettings.library.markupFile(file.spath())) {
// TODO: if an exception occurs in this block it will continue in an unexpected code path
if (!mSettings.buildDir.empty())
{
analyzerInformation.reset(new AnalyzerInformation);
mLogger->setAnalyzerInfo(analyzerInformation.get());
}
if (mUnusedFunctionsCheck && (mSettings.useSingleJob() || analyzerInformation)) {
std::size_t hash = 0;
// this is not a real source file - we just want to tokenize it. treat it as C anyways as the language needs to be determined.
Tokenizer tokenizer(mSettings, mErrorLogger);
// enforce the language since markup files are special and do not adhere to the enforced language
tokenizer.list.setLang(Standards::Language::C, true);
if (fileStream) {
std::vector<std::string> files{file.spath()};
simplecpp::TokenList tokens(*fileStream, files);
if (analyzerInformation) {
const Preprocessor preprocessor(mSettings, mErrorLogger);
hash = calculateHash(preprocessor, tokens, mSettings, mSuppressions);
}
tokenizer.list.createTokens(std::move(tokens));
}
else {
std::vector<std::string> files{file.spath()};
simplecpp::TokenList tokens(file.spath(), files);
if (analyzerInformation) {
const Preprocessor preprocessor(mSettings, mErrorLogger);
hash = calculateHash(preprocessor, tokens, mSettings, mSuppressions);
}
tokenizer.list.createTokens(std::move(tokens));
}
mUnusedFunctionsCheck->parseTokens(tokenizer, mSettings);
if (analyzerInformation) {
mLogger->setAnalyzerInfo(nullptr);
std::list<ErrorMessage> errors;
analyzerInformation->analyzeFile(mSettings.buildDir, file.spath(), cfgname, hash, errors);
analyzerInformation->setFileInfo("CheckUnusedFunctions", mUnusedFunctionsCheck->analyzerInfo());
analyzerInformation->close();
}
}
return EXIT_SUCCESS;
}
simplecpp::OutputList outputList;
std::vector<std::string> files;
simplecpp::TokenList tokens1 = createTokenList(file.spath(), files, &outputList, fileStream);
// If there is a syntax error, report it and stop
const auto output_it = std::find_if(outputList.cbegin(), outputList.cend(), [](const simplecpp::Output &output){
return Preprocessor::hasErrors(output);
});
if (output_it != outputList.cend()) {
const simplecpp::Output &output = *output_it;
std::string locfile = Path::fromNativeSeparators(output.location.file());
if (mSettings.relativePaths)
locfile = Path::getRelativePath(locfile, mSettings.basePaths);
ErrorMessage::FileLocation loc1(locfile, output.location.line, output.location.col);
ErrorMessage errmsg({std::move(loc1)},
"", // TODO: is this correct?
Severity::error,
output.msg,
"syntaxError",
Certainty::normal);
mErrorLogger.reportErr(errmsg);
return mLogger->exitcode();
}
Preprocessor preprocessor(mSettings, mErrorLogger);
if (!preprocessor.loadFiles(tokens1, files))
return mLogger->exitcode();
if (!mSettings.plistOutput.empty()) {
std::string filename2;
if (file.spath().find('/') != std::string::npos)
filename2 = file.spath().substr(file.spath().rfind('/') + 1);
else
filename2 = file.spath();
const std::size_t fileNameHash = std::hash<std::string> {}(file.spath());
filename2 = mSettings.plistOutput + filename2.substr(0, filename2.find('.')) + "_" + std::to_string(fileNameHash) + ".plist";
mLogger->openPlist(filename2, files);
}
std::string dumpProlog;
if (mSettings.dump || !mSettings.addons.empty()) {
dumpProlog += getDumpFileContentsRawTokens(files, tokens1);
}
// Parse comments and then remove them
mLogger->setRemarkComments(preprocessor.getRemarkComments(tokens1));
preprocessor.inlineSuppressions(tokens1, mSuppressions.nomsg);
if (mSettings.dump || !mSettings.addons.empty()) {
std::ostringstream oss;
mSuppressions.nomsg.dump(oss);
dumpProlog += oss.str();
}
preprocessor.removeComments(tokens1);
if (!mSettings.buildDir.empty()) {
analyzerInformation.reset(new AnalyzerInformation);
mLogger->setAnalyzerInfo(analyzerInformation.get());
}
if (analyzerInformation) {
// Calculate hash so it can be compared with old hash / future hashes
const std::size_t hash = calculateHash(preprocessor, tokens1, mSettings, mSuppressions);