walkero
/
cppcheck
1
0
Fork 0
Code Issues Pull Requests Projects Releases 1 Wiki Activity
cppcheck/lib/preprocessor.cpp

858 lines
31 KiB
C++
Raw Blame History

/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2016 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 "preprocessor.h"
#include "path.h"
#include "errorlogger.h"
#include "settings.h"
#include "simplecpp.h"
#include <algorithm>
#include <sstream>
#include <fstream>
#include <cstdlib>
#include <cctype>
#include <vector>
#include <set>
#include <stack>
/**
* Remove heading and trailing whitespaces from the input parameter.
* If string is all spaces/tabs, return empty string.
* @param s The string to trim.
*/
static std::string trim(const std::string& s)
{
const std::string::size_type beg = s.find_first_not_of(" \t");
if (beg == std::string::npos)
return "";
const std::string::size_type end = s.find_last_not_of(" \t");
return s.substr(beg, end - beg + 1);
}
Directive::Directive(const std::string &_file, const int _linenr, const std::string &_str):
file(_file),
linenr(_linenr),
str(_str)
{
str = trim(str);
}
bool Preprocessor::missingIncludeFlag;
bool Preprocessor::missingSystemIncludeFlag;
char Preprocessor::macroChar = char(1);
Preprocessor::Preprocessor(Settings& settings, ErrorLogger *errorLogger) : _settings(settings), _errorLogger(errorLogger)
{
}
Preprocessor::~Preprocessor()
{
for (std::map<std::string, simplecpp::TokenList *>::iterator it = tokenlists.begin(); it != tokenlists.end(); ++it)
delete it->second;
}
void Preprocessor::writeError(const std::string &fileName, const unsigned int linenr, ErrorLogger *errorLogger, const std::string &errorType, const std::string &errorText)
{
if (!errorLogger)
return;
std::list<ErrorLogger::ErrorMessage::FileLocation> locationList;
ErrorLogger::ErrorMessage::FileLocation loc(fileName, linenr);
locationList.push_back(loc);
errorLogger->reportErr(ErrorLogger::ErrorMessage(locationList,
Severity::error,
errorText,
errorType,
false));
}
static void inlineSuppressions(const simplecpp::TokenList &tokens, Settings &_settings)
{
std::list<std::string> suppressionIDs;
for (const simplecpp::Token *tok = tokens.cbegin(); tok; tok = tok->next) {
if (tok->comment) {
std::istringstream iss(tok->str.substr(2));
std::string word;
iss >> word;
if (word != "cppcheck-suppress")
continue;
iss >> word;
if (iss)
suppressionIDs.push_back(word);
continue;
}
if (suppressionIDs.empty())
continue;
// Relative filename
std::string relativeFilename(tok->location.file());
if (_settings.relativePaths) {
for (std::size_t j = 0U; j < _settings.basePaths.size(); ++j) {
const std::string bp = _settings.basePaths[j] + "/";
if (relativeFilename.compare(0,bp.size(),bp)==0) {
relativeFilename = relativeFilename.substr(bp.size());
}
}
}
// Add the suppressions.
for (std::list<std::string>::const_iterator it = suppressionIDs.begin(); it != suppressionIDs.end(); ++it) {
_settings.nomsg.addSuppression(*it, relativeFilename, tok->location.line);
}
suppressionIDs.clear();
}
}
void Preprocessor::inlineSuppressions(const simplecpp::TokenList &tokens)
{
if (!_settings.inlineSuppressions)
return;
::inlineSuppressions(tokens, _settings);
for (std::map<std::string,simplecpp::TokenList*>::const_iterator it = tokenlists.begin(); it != tokenlists.end(); ++it) {
if (it->second)
::inlineSuppressions(*it->second, _settings);
}
}
static std::string readcondition(const simplecpp::Token *iftok, const std::set<std::string> &defined)
{
const simplecpp::Token *cond = iftok->next;
if (!cond)
return "";
if (cond->str == "0")
return "0";
if (cond->name && cond->next && iftok->location.sameline(cond->location) && !iftok->location.sameline(cond->next->location)) {
if (defined.find(cond->str) == defined.end())
return cond->str;
}
if (cond->op == '(' && cond->next && cond->next->name && cond->next->next && cond->next->next->op == ')') {
if (defined.find(cond->next->str) == defined.end())
return cond->next->str;
}
if (cond->name && cond->next && cond->next->str == "==" && cond->next->next && cond->next->next->number) {
if (defined.find(cond->str) == defined.end())
return cond->str + '=' + cond->next->next->str;
}
std::set<std::string> configset;
for (; cond && iftok->location.sameline(cond->location); cond = cond->next) {
if (cond->op == '!')
break;
if (cond->str == "defined") {
if (!cond->next)
break;
const simplecpp::Token *dtok = nullptr;
if (cond->next->op == '(')
dtok = cond->next->next;
else if (cond->next->name)
dtok = cond->next;
if (dtok && dtok->name && defined.find(dtok->str) == defined.end())
configset.insert(dtok->str);
}
}
std::string cfg;
for (std::set<std::string>::const_iterator it = configset.begin(); it != configset.end(); ++it) {
if (!cfg.empty())
cfg += ';';
cfg += *it;
}
return cfg;
}
static std::string cfg(const std::vector<std::string> &configs)
{
std::set<std::string> configs2(configs.begin(), configs.end());
std::string ret;
for (std::set<std::string>::const_iterator it = configs2.begin(); it != configs2.end(); ++it) {
if (it->empty())
continue;
if (*it == "0")
return "";
if (!ret.empty())
ret += ';';
ret += *it;
}
return ret;
}
static void getConfigs(const simplecpp::TokenList &tokens, std::set<std::string> &defined, std::set<std::string> &ret)
{
std::vector<std::string> configs_if;
std::vector<std::string> configs_ifndef;
for (const simplecpp::Token *tok = tokens.cbegin(); tok; tok = tok->next) {
if (tok->op != '#')
continue;
if (tok->previous && tok->location.sameline(tok->previous->location))
continue;
if (!tok->next)
continue;
if (tok->next->str == "ifdef" || tok->next->str == "ifndef" || tok->next->str == "if") {
std::string config;
if (tok->next->str == "ifdef" || tok->next->str == "ifndef") {
if (tok->next->next && tok->next->next->name && tok->location.sameline(tok->next->next->location) && tok->next->next->next && !tok->location.sameline(tok->next->next->next->location))
config = tok->next->next->str;
if (defined.find(config) != defined.end())
config.clear();
} else if (tok->next->str == "if") {
config = readcondition(tok->next, defined);
}
configs_if.push_back((tok->next->str == "ifndef") ? std::string() : config);
configs_ifndef.push_back((tok->next->str == "ifndef") ? config : std::string());
ret.insert(cfg(configs_if));
} else if (tok->next->str == "elif") {
if (!configs_if.empty())
configs_if.pop_back();
configs_if.push_back(readcondition(tok->next, defined));
ret.insert(cfg(configs_if));
} else if (tok->next->str == "else") {
if (!configs_if.empty())
configs_if.pop_back();
configs_if.push_back(configs_ifndef.back());
ret.insert(cfg(configs_if));
} else if (tok->next->str == "endif" && tok->location.sameline(tok->next->location)) {
if (!configs_if.empty())
configs_if.pop_back();
if (!configs_ifndef.empty())
configs_ifndef.pop_back();
} else if (tok->next->str == "define" && tok->next->next && tok->next->next->name && tok->location.sameline(tok->next->next->location)) {
defined.insert(tok->next->next->str);
}
}
}
std::set<std::string> Preprocessor::getConfigs(const simplecpp::TokenList &tokens) const
{
std::set<std::string> ret;
ret.insert("");
simplecpp::TokenList tokens2(tokens);
tokens2.removeComments();
if (!tokens2.cbegin())
return ret;
std::set<std::string> defined;
defined.insert("__cplusplus");
::getConfigs(tokens2, defined, ret);
for (std::map<std::string, simplecpp::TokenList*>::const_iterator it = tokenlists.begin(); it != tokenlists.end(); ++it)
::getConfigs(*(it->second), defined, ret);
return ret;
}
std::string Preprocessor::preprocessCleanupDirectives(const std::string &processedFile)
{
std::ostringstream code;
std::istringstream sstr(processedFile);
std::string line;
while (std::getline(sstr, line)) {
// Trim lines..
if (!line.empty() && line[0] == ' ')
line.erase(0, line.find_first_not_of(" "));
if (!line.empty() && line.back() == ' ')
line.erase(line.find_last_not_of(" ") + 1);
// Preprocessor
if (!line.empty() && line[0] == '#') {
enum {
ESC_NONE,
ESC_SINGLE,
ESC_DOUBLE
} escapeStatus = ESC_NONE;
char prev = ' '; // hack to make it skip spaces between # and the directive
code << "#";
std::string::const_iterator i = line.begin();
++i;
// need space.. #if( => #if (
bool needSpace = true;
while (i != line.end()) {
// disable esc-mode
if (escapeStatus != ESC_NONE) {
if (prev != '\\' && escapeStatus == ESC_SINGLE && *i == '\'') {
escapeStatus = ESC_NONE;
}
if (prev != '\\' && escapeStatus == ESC_DOUBLE && *i == '"') {
escapeStatus = ESC_NONE;
}
} else {
// enable esc-mode
if (escapeStatus == ESC_NONE && *i == '"')
escapeStatus = ESC_DOUBLE;
if (escapeStatus == ESC_NONE && *i == '\'')
escapeStatus = ESC_SINGLE;
}
// skip double whitespace between arguments
if (escapeStatus == ESC_NONE && prev == ' ' && *i == ' ') {
++i;
continue;
}
// Convert #if( to "#if ("
if (escapeStatus == ESC_NONE) {
if (needSpace) {
if (*i == '(' || *i == '!')
code << " ";
else if (!std::isalpha((unsigned char)*i))
needSpace = false;
}
if (*i == '#')
needSpace = true;
}
code << *i;
if (escapeStatus != ESC_NONE && prev == '\\' && *i == '\\') {
prev = ' ';
} else {
prev = *i;
}
++i;
}
if (escapeStatus != ESC_NONE) {
// unmatched quotes.. compiler should probably complain about this..
}
} else {
// Do not mess with regular code..
code << line;
}
code << (sstr.eof()?"":"\n");
}
return code.str();
}
void Preprocessor::preprocess(std::istream &istr, std::map<std::string, std::string> &result, const std::string &filename, const std::list<std::string> &includePaths)
{
(void)includePaths;
simplecpp::OutputList outputList;
std::vector<std::string> files;
const simplecpp::TokenList tokens1(istr, files, filename, &outputList);
const std::set<std::string> configs = getConfigs(tokens1);
for (std::set<std::string>::const_iterator it = configs.begin(); it != configs.end(); ++it) {
if (_settings.userUndefs.find(*it) == _settings.userUndefs.end()) {
result[ *it ] = getcode(tokens1, *it, files, false);
}
}
}
std::string Preprocessor::removeSpaceNearNL(const std::string &str)
{
std::string tmp;
char prev = '\n'; // treat start of file as newline
for (std::size_t i = 0; i < str.size(); i++) {
if (str[i] == ' ' &&
(prev == '\n' ||
i + 1 >= str.size() || // treat end of file as newline
str[i+1] == '\n'
)
) {
// Ignore space that has new line in either side of it
} else {
tmp.append(1, str[i]);
prev = str[i];
}
}
return tmp;
}
void Preprocessor::preprocessWhitespaces(std::string &processedFile)
{
// Replace all tabs with spaces..
std::replace(processedFile.begin(), processedFile.end(), '\t', ' ');
// Remove space characters that are after or before new line character
processedFile = removeSpaceNearNL(processedFile);
}
void Preprocessor::preprocess(std::istream &srcCodeStream, std::string &processedFile, std::list<std::string> &resultConfigurations, const std::string &filename, const std::list<std::string> &includePaths)
{
(void)includePaths;
if (file0.empty())
file0 = filename;
simplecpp::OutputList outputList;
std::vector<std::string> files;
const simplecpp::TokenList tokens1(srcCodeStream, files, filename, &outputList);
const std::set<std::string> configs = getConfigs(tokens1);
for (std::set<std::string>::const_iterator it = configs.begin(); it != configs.end(); ++it)
resultConfigurations.push_back(*it);
processedFile = tokens1.stringify();
}
static void splitcfg(const std::string &cfg, std::list<std::string> &defines, const std::string &defaultValue)
{
for (std::string::size_type pos1 = 0U; pos1 < cfg.size();) {
const std::string::size_type pos2 = cfg.find(";",pos1);
std::string def = (pos2 == std::string::npos) ? cfg.substr(pos1) : cfg.substr(pos1, pos2 - pos1);
if (!defaultValue.empty() && def.find("=") == std::string::npos)
def += '=' + defaultValue;
defines.push_back(def);
pos1 = (pos2 == std::string::npos) ? pos2 : pos2 + 1U;
}
}
void Preprocessor::loadFiles(const simplecpp::TokenList &rawtokens, std::vector<std::string> &files)
{
const std::string filename(files[0]);
// Create a map for the cfg for faster access to defines
simplecpp::DUI dui;
splitcfg(_settings.userDefines, dui.defines, "1");
for (std::vector<std::string>::const_iterator it = _settings.library.defines.begin(); it != _settings.library.defines.end(); ++it) {
if (it->compare(0,8,"#define ")!=0)
continue;
std::string s = it->substr(8);
std::string::size_type pos = s.find_first_of(" (");
if (pos == std::string::npos) {
dui.defines.push_back(s);
continue;
}
if (s[pos] == ' ') {
s[pos] = '=';
} else {
s[s.find(")")+1] = '=';
}
dui.defines.push_back(s);
}
if (Path::isCPP(filename))
dui.defines.push_back("__cplusplus");
dui.undefined = _settings.userUndefs;
dui.includePaths = _settings.includePaths;
simplecpp::OutputList outputList;
tokenlists = simplecpp::load(rawtokens, files, dui, &outputList);
}
void Preprocessor::removeComments()
{
for (std::map<std::string, simplecpp::TokenList*>::iterator it = tokenlists.begin(); it != tokenlists.end(); ++it) {
if (it->second)
it->second->removeComments();
}
}
std::string Preprocessor::getcode(const simplecpp::TokenList &tokens1, const std::string &cfg, std::vector<std::string> &files, const bool writeLocations)
{
const std::string filename(files[0]);
// Create a map for the cfg for faster access to defines
simplecpp::DUI dui;
splitcfg(_settings.userDefines, dui.defines, "1");
splitcfg(cfg, dui.defines, "");
for (std::vector<std::string>::const_iterator it = _settings.library.defines.begin(); it != _settings.library.defines.end(); ++it) {
if (it->compare(0,8,"#define ")!=0)
continue;
std::string s = it->substr(8);
std::string::size_type pos = s.find_first_of(" (");
if (pos == std::string::npos) {
dui.defines.push_back(s);
continue;
}
if (s[pos] == ' ') {
s[pos] = '=';
} else {
s[s.find(")")+1] = '=';
}
dui.defines.push_back(s);
}
if (Path::isCPP(filename))
dui.defines.push_back("__cplusplus");
dui.undefined = _settings.userUndefs;
dui.includePaths = _settings.includePaths;
simplecpp::OutputList outputList;
std::list<simplecpp::MacroUsage> macroUsage;
const simplecpp::TokenList &tokens2 = simplecpp::preprocess(tokens1, files, tokenlists, dui, &outputList, &macroUsage);
bool showerror = (!_settings.userDefines.empty() && !_settings.force);
for (simplecpp::OutputList::const_iterator it = outputList.begin(); it != outputList.end(); ++it) {
switch (it->type) {
case simplecpp::Output::ERROR:
if (it->msg.compare(0,6,"#error")!=0 || showerror)
error(it->location.file(), it->location.line, it->msg);
return "";
case simplecpp::Output::WARNING:
break;
case simplecpp::Output::MISSING_INCLUDE: {
const std::string::size_type pos1 = it->msg.find_first_of("<\"");
const std::string::size_type pos2 = it->msg.find_first_of(">\"", pos1 + 1U);
if (pos1 < pos2 && pos2 != std::string::npos)
missingInclude(it->location.file(), it->location.line, it->msg.substr(pos1+1, pos2-pos1-1), it->msg[pos1] == '\"' ? UserHeader : SystemHeader);
}
break;
};
}
// directive list..
directives.clear();
for (const simplecpp::Token *tok = tokens1.cbegin(); tok; tok = tok ? tok->next : nullptr) {
if ((tok->op != '#') || (tok->previous && tok->previous->location.line == tok->location.line))
continue;
if (tok->next && tok->next->str == "endfile")
continue;
Directive directive(tok->location.file(), tok->location.line, "");
for (const simplecpp::Token *tok2 = tok; tok2 && tok2->location.line == directive.linenr; tok2 = tok2->next) {
if (tok2->comment)
continue;
if (!directive.str.empty() && (tok2->location.col > tok2->previous->location.col + tok2->previous->str.size()))
directive.str += ' ';
if (directive.str == "#" && tok2->str == "file")
directive.str += "include";
else
directive.str += tok2->str;
}
directives.push_back(directive);
}
// ensure that guessed define macros without value are not used in the code
for (std::list<std::string>::const_iterator defineIt = dui.defines.begin(); defineIt != dui.defines.end(); ++defineIt) {
if (defineIt->find("=") != std::string::npos)
continue;
const std::string macroName = defineIt->substr(0, std::min(defineIt->find("="), defineIt->find("(")));
for (std::list<simplecpp::MacroUsage>::const_iterator usageIt = macroUsage.begin(); usageIt != macroUsage.end(); ++usageIt) {
const simplecpp::MacroUsage &mu = *usageIt;
if (mu.macroName != macroName)
continue;
bool directiveLocation = false;
for (std::list<Directive>::const_iterator dirIt = directives.begin(); dirIt != directives.end(); ++dirIt) {
if (mu.useLocation.file() == dirIt->file && mu.useLocation.line == dirIt->linenr) {
directiveLocation = true;
break;
}
}
if (!directiveLocation) {
if (_settings.isEnabled("information"))
validateCfgError(cfg, macroName);
return "";
}
}
}
// assembler code locations..
std::set<simplecpp::Location> assemblerLocations;
for (std::list<Directive>::const_iterator dirIt = directives.begin(); dirIt != directives.end(); ++dirIt) {
const Directive &d1 = *dirIt;
if (d1.str.compare(0, 11, "#pragma asm") != 0)
continue;
std::list<Directive>::const_iterator dirIt2 = dirIt;
++dirIt2;
if (dirIt2 == directives.end())
continue;
const Directive &d2 = *dirIt2;
if (d2.str.compare(0,14,"#pragma endasm") != 0 || d1.file != d2.file)
continue;
simplecpp::Location loc(files);
loc.fileIndex = ~0U;
loc.col = 0U;
for (unsigned int i = 0; i < files.size(); ++i) {
if (files[i] == d1.file) {
loc.fileIndex = i;
break;
}
}
for (unsigned int linenr = d1.linenr + 1U; linenr < d2.linenr; linenr++) {
loc.line = linenr;
assemblerLocations.insert(loc);
}
}
unsigned int prevfile = 0;
unsigned int line = 1;
std::ostringstream ret;
for (const simplecpp::Token *tok = tokens2.cbegin(); tok; tok = tok->next) {
if (writeLocations && tok->location.fileIndex != prevfile) {
ret << "\n#line " << tok->location.line << " \"" << tok->location.file() << "\"\n";
prevfile = tok->location.fileIndex;
line = tok->location.line;
}
if (tok->previous && line == tok->location.line)
ret << ' ';
bool newline = false;
while (tok->location.line > line) {
ret << '\n';
line++;
newline = true;
}
if (newline) {
simplecpp::Location loc = tok->location;
loc.col = 0U;
if (assemblerLocations.find(loc) != assemblerLocations.end()) {
ret << "asm();";
while (assemblerLocations.find(loc) != assemblerLocations.end()) {
loc.line++;
}
while (tok && tok->location.line < loc.line)
tok = tok->next;
if (!tok)
break;
while (line < tok->location.line) {
ret << '\n';
++line;
}
}
}
if (!tok->macro.empty())
ret << Preprocessor::macroChar;
ret << tok->str;
}
return ret.str();
}
std::string Preprocessor::getcode(const std::string &filedata, const std::string &cfg, const std::string &filename)
{
simplecpp::OutputList outputList;
std::vector<std::string> files;
std::istringstream istr(filedata);
const simplecpp::TokenList &tokens1 = simplecpp::TokenList(istr, files, Path::simplifyPath(filename), &outputList);
inlineSuppressions(tokens1);
for (simplecpp::OutputList::const_iterator it = outputList.begin(); it != outputList.end(); ++it) {
switch (it->type) {
case simplecpp::Output::ERROR:
error(it->location.file(), it->location.line, it->msg);
return "";
case simplecpp::Output::WARNING:
break;
case simplecpp::Output::MISSING_INCLUDE: {
const std::string::size_type pos1 = it->msg.find_first_of("<\"");
const std::string::size_type pos2 = it->msg.find_first_of(">\"", pos1 + 1U);
if (pos1 < pos2 && pos2 != std::string::npos)
missingInclude(it->location.file(), it->location.line, it->msg.substr(pos1+1, pos2-pos1-1), it->msg[pos1] == '\"' ? UserHeader : SystemHeader);
}
break;
};
}
return getcode(tokens1, cfg, files, filedata.find("#file") != std::string::npos);
}
void Preprocessor::error(const std::string &filename, unsigned int linenr, const std::string &msg)
{
std::list<ErrorLogger::ErrorMessage::FileLocation> locationList;
if (!filename.empty()) {
ErrorLogger::ErrorMessage::FileLocation loc(filename, linenr);
locationList.push_back(loc);
}
_errorLogger->reportErr(ErrorLogger::ErrorMessage(locationList,
Severity::error,
msg,
"preprocessorErrorDirective",
false));
}
Preprocessor::HeaderTypes Preprocessor::getHeaderFileName(std::string &str)
{
std::string::size_type i = str.find_first_of("<\"");
if (i == std::string::npos) {
str = "";
return NoHeader;
}
char c = str[i];
if (c == '<')
c = '>';
std::string result;
for (i = i + 1; i < str.length(); ++i) {
if (str[i] == c)
break;
result.append(1, str[i]);
}
// Linux can't open include paths with \ separator, so fix them
std::replace(result.begin(), result.end(), '\\', '/');
str = result;
return (c == '\"') ? UserHeader : SystemHeader;
}
// Report that include is missing
void Preprocessor::missingInclude(const std::string &filename, unsigned int linenr, const std::string &header, HeaderTypes headerType)
{
const std::string fname = Path::fromNativeSeparators(filename);
if (_settings.nomsg.isSuppressed("missingInclude", fname, linenr))
return;
if (headerType == SystemHeader && _settings.nomsg.isSuppressed("missingIncludeSystem", fname, linenr))
return;
if (headerType == SystemHeader)
missingSystemIncludeFlag = true;
else
missingIncludeFlag = true;
if (_errorLogger && _settings.checkConfiguration) {
std::list<ErrorLogger::ErrorMessage::FileLocation> locationList;
if (!filename.empty()) {
ErrorLogger::ErrorMessage::FileLocation loc;
loc.line = linenr;
loc.setfile(Path::toNativeSeparators(filename));
locationList.push_back(loc);
}
ErrorLogger::ErrorMessage errmsg(locationList, Severity::information,
(headerType==SystemHeader) ?
"Include file: <" + header + "> not found. Please note: Cppcheck does not need standard library headers to get proper results." :
"Include file: \"" + header + "\" not found.",
(headerType==SystemHeader) ? "missingIncludeSystem" : "missingInclude",
false);
errmsg.file0 = file0;
_errorLogger->reportInfo(errmsg);
}
}
bool Preprocessor::validateCfg(const std::string &code, const std::string &cfg)
{
const bool printInformation = _settings.isEnabled("information");
// fill up "macros" with empty configuration macros
std::set<std::string> macros;
for (std::string::size_type pos = 0; pos < cfg.size();) {
const std::string::size_type pos2 = cfg.find_first_of(";=", pos);
if (pos2 == std::string::npos) {
macros.insert(cfg.substr(pos));
break;
}
if (cfg[pos2] == ';')
macros.insert(cfg.substr(pos, pos2-pos));
pos = cfg.find(';', pos2);
if (pos != std::string::npos)
++pos;
}
// check if any empty macros are used in code
for (std::set<std::string>::const_iterator it = macros.begin(); it != macros.end(); ++it) {
const std::string &macro = *it;
std::string::size_type pos = 0;
while ((pos = code.find_first_of(std::string("#\"'")+macro[0], pos)) != std::string::npos) {
const std::string::size_type pos1 = pos;
const std::string::size_type pos2 = pos + macro.size();
pos++;
// skip string..
if (code[pos1] == '\"' || code[pos1] == '\'') {
while (pos < code.size() && code[pos] != code[pos1]) {
if (code[pos] == '\\')
++pos;
++pos;
}
++pos;
}
// skip preprocessor statement..
else if (code[pos1] == '#') {
if (pos1 == 0 || code[pos1-1] == '\n')
pos = code.find('\n', pos);
}
// is macro used in code?
else if (code.compare(pos1,macro.size(),macro) == 0) {
if (pos1 > 0 && (std::isalnum((unsigned char)code[pos1-1U]) || code[pos1-1U] == '_'))
continue;
if (pos2 < code.size() && (std::isalnum((unsigned char)code[pos2]) || code[pos2] == '_'))
continue;
// macro is used in code, return false
if (printInformation)
validateCfgError(cfg, macro);
return false;
}
}
}
return true;
}
void Preprocessor::validateCfgError(const std::string &cfg, const std::string &macro)
{
const std::string id = "ConfigurationNotChecked";
std::list<ErrorLogger::ErrorMessage::FileLocation> locationList;
ErrorLogger::ErrorMessage::FileLocation loc(file0, 1);
locationList.push_back(loc);
ErrorLogger::ErrorMessage errmsg(locationList, Severity::information, "Skipping configuration '" + cfg + "' since the value of '" + macro + "' is unknown. Use -D if you want to check it. You can use -U to skip it explicitly.", id, false);
_errorLogger->reportInfo(errmsg);
}
void Preprocessor::getErrorMessages(ErrorLogger *errorLogger, const Settings *settings)
{
Settings settings2(*settings);
Preprocessor preprocessor(settings2, errorLogger);
settings2.checkConfiguration=true;
preprocessor.missingInclude("", 1, "", UserHeader);
preprocessor.missingInclude("", 1, "", SystemHeader);
preprocessor.validateCfgError("X", "X");
preprocessor.error("", 1, "#error message"); // #error ..
}
void Preprocessor::dump(std::ostream &out) const
{
// Create a xml directive dump.
// The idea is not that this will be readable for humans. It's a
// data dump that 3rd party tools could load and get useful info from.
std::list<Directive>::const_iterator it;
out << " <directivelist>" << std::endl;
for (it = directives.begin(); it != directives.end(); ++it) {
out << " <directive "
<< "file=\"" << it->file << "\" "
<< "linenr=\"" << it->linenr << "\" "
// str might contain characters such as '"', '<' or '>' which
// could result in invalid XML, so run it through toxml().
<< "str=\"" << ErrorLogger::toxml(it->str) << "\"/>" << std::endl;
}
out << " </directivelist>" << std::endl;
}
Reference in New Issue View Git Blame Copy Permalink