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Copy pathlibrary.cpp
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991 lines (892 loc) · 41.6 KB
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/*
* 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 "library.h"
#include "path.h"
#include "tinyxml2.h"
#include "tokenlist.h"
#include "mathlib.h"
#include "token.h"
#include "symboldatabase.h"
#include "astutils.h"
#include <string>
static std::vector<std::string> getnames(const char *names)
{
std::vector<std::string> ret;
while (const char *p = std::strchr(names,',')) {
ret.push_back(std::string(names, p-names));
names = p + 1;
}
ret.push_back(names);
return ret;
}
Library::Library() : allocid(0)
{
}
Library::Error Library::load(const char exename[], const char path[])
{
if (std::strchr(path,',') != nullptr) {
std::string p(path);
for (;;) {
const std::string::size_type pos = p.find(',');
if (pos == std::string::npos)
break;
const Error &e = load(exename, p.substr(0,pos).c_str());
if (e.errorcode != OK)
return e;
p = p.substr(pos+1);
}
if (!p.empty())
return load(exename, p.c_str());
return Error();
}
std::string absolute_path;
// open file..
tinyxml2::XMLDocument doc;
tinyxml2::XMLError error = doc.LoadFile(path);
if (error == tinyxml2::XML_ERROR_FILE_NOT_FOUND) {
// failed to open file.. is there no extension?
std::string fullfilename(path);
if (Path::getFilenameExtension(fullfilename) == "") {
fullfilename += ".cfg";
error = doc.LoadFile(fullfilename.c_str());
if (error != tinyxml2::XML_ERROR_FILE_NOT_FOUND)
absolute_path = Path::getAbsoluteFilePath(fullfilename);
}
if (error == tinyxml2::XML_ERROR_FILE_NOT_FOUND) {
// Try to locate the library configuration in the installation folder..
#ifdef CFGDIR
const std::string cfgfolder(CFGDIR);
#else
if (!exename)
return Error(FILE_NOT_FOUND);
const std::string cfgfolder(Path::fromNativeSeparators(Path::getPathFromFilename(exename)) + "cfg");
#endif
const char *sep = (!cfgfolder.empty() && cfgfolder[cfgfolder.size()-1U]=='/' ? "" : "/");
const std::string filename(cfgfolder + sep + fullfilename);
error = doc.LoadFile(filename.c_str());
if (error != tinyxml2::XML_ERROR_FILE_NOT_FOUND)
absolute_path = Path::getAbsoluteFilePath(filename);
}
} else
absolute_path = Path::getAbsoluteFilePath(path);
if (error == tinyxml2::XML_NO_ERROR) {
if (_files.find(absolute_path) == _files.end()) {
Error err = load(doc);
if (err.errorcode == OK)
_files.insert(absolute_path);
return err;
}
return Error(OK); // ignore duplicates
}
return Error(error == tinyxml2::XML_ERROR_FILE_NOT_FOUND ? FILE_NOT_FOUND : BAD_XML);
}
bool Library::loadxmldata(const char xmldata[], std::size_t len)
{
tinyxml2::XMLDocument doc;
return (tinyxml2::XML_NO_ERROR == doc.Parse(xmldata, len)) && (load(doc).errorcode == OK);
}
Library::Error Library::load(const tinyxml2::XMLDocument &doc)
{
const tinyxml2::XMLElement * const rootnode = doc.FirstChildElement();
if (rootnode == nullptr)
return Error(BAD_XML);
if (strcmp(rootnode->Name(),"def") != 0)
return Error(UNSUPPORTED_FORMAT, rootnode->Name());
const char* format_string = rootnode->Attribute("format");
int format = 1; // Assume format version 1 if nothing else is specified (very old .cfg files had no 'format' attribute)
if (format_string)
format = atoi(format_string);
if (format > 2 || format <= 0)
return Error(UNSUPPORTED_FORMAT);
std::set<std::string> unknown_elements;
for (const tinyxml2::XMLElement *node = rootnode->FirstChildElement(); node; node = node->NextSiblingElement()) {
const std::string nodename = node->Name();
if (nodename == "memory" || nodename == "resource") {
// get allocationId to use..
int allocationId = 0;
for (const tinyxml2::XMLElement *memorynode = node->FirstChildElement(); memorynode; memorynode = memorynode->NextSiblingElement()) {
if (strcmp(memorynode->Name(),"dealloc")==0) {
const std::map<std::string,int>::const_iterator it = _dealloc.find(memorynode->GetText());
if (it != _dealloc.end()) {
allocationId = it->second;
break;
}
}
}
if (allocationId == 0) {
if (nodename == "memory")
while (!ismemory(++allocid));
else
while (!isresource(++allocid));
allocationId = allocid;
}
// add alloc/dealloc/use functions..
for (const tinyxml2::XMLElement *memorynode = node->FirstChildElement(); memorynode; memorynode = memorynode->NextSiblingElement()) {
const std::string memorynodename = memorynode->Name();
if (memorynodename == "alloc") {
_alloc[memorynode->GetText()] = allocationId;
const char *init = memorynode->Attribute("init");
if (init && strcmp(init,"false")==0) {
returnuninitdata.insert(memorynode->GetText());
}
} else if (memorynodename == "dealloc")
_dealloc[memorynode->GetText()] = allocationId;
else if (memorynodename == "use")
use.insert(memorynode->GetText());
else
unknown_elements.insert(memorynodename);
}
}
else if (nodename == "define") {
const char *name = node->Attribute("name");
if (name == nullptr)
return Error(MISSING_ATTRIBUTE, "name");
const char *value = node->Attribute("value");
if (value == nullptr)
return Error(MISSING_ATTRIBUTE, "value");
defines.push_back(std::string("#define ") +
name +
" " +
value +
"\n");
}
else if (nodename == "function") {
const char *name = node->Attribute("name");
if (name == nullptr)
return Error(MISSING_ATTRIBUTE, "name");
const std::vector<std::string> names(getnames(name));
for (unsigned int i = 0U; i < names.size(); ++i) {
const Error &err = loadFunction(node, names[i], unknown_elements);
if (err.errorcode != ErrorCode::OK)
return err;
}
}
else if (nodename == "reflection") {
for (const tinyxml2::XMLElement *reflectionnode = node->FirstChildElement(); reflectionnode; reflectionnode = reflectionnode->NextSiblingElement()) {
if (strcmp(reflectionnode->Name(), "call") != 0) {
unknown_elements.insert(reflectionnode->Name());
continue;
}
const char * const argString = reflectionnode->Attribute("arg");
if (!argString)
return Error(MISSING_ATTRIBUTE, "arg");
_reflection[reflectionnode->GetText()] = atoi(argString);
}
}
else if (nodename == "markup") {
const char * const extension = node->Attribute("ext");
if (!extension)
return Error(MISSING_ATTRIBUTE, "ext");
_markupExtensions.insert(extension);
const char * const reporterrors = node->Attribute("reporterrors");
_reporterrors[extension] = (reporterrors && strcmp(reporterrors, "true") == 0);
const char * const aftercode = node->Attribute("aftercode");
_processAfterCode[extension] = (aftercode && strcmp(aftercode, "true") == 0);
for (const tinyxml2::XMLElement *markupnode = node->FirstChildElement(); markupnode; markupnode = markupnode->NextSiblingElement()) {
const std::string markupnodename = markupnode->Name();
if (markupnodename == "keywords") {
for (const tinyxml2::XMLElement *librarynode = markupnode->FirstChildElement(); librarynode; librarynode = librarynode->NextSiblingElement()) {
if (strcmp(librarynode->Name(), "keyword") == 0) {
const char* nodeName = librarynode->Attribute("name");
if (nodeName == nullptr)
return Error(MISSING_ATTRIBUTE, "name");
_keywords[extension].insert(nodeName);
} else
unknown_elements.insert(librarynode->Name());
}
}
else if (markupnodename == "exported") {
for (const tinyxml2::XMLElement *exporter = markupnode->FirstChildElement(); exporter; exporter = exporter->NextSiblingElement()) {
if (strcmp(exporter->Name(), "exporter") != 0) {
unknown_elements.insert(exporter->Name());
continue;
}
const char * const prefix = exporter->Attribute("prefix");
if (!prefix)
return Error(MISSING_ATTRIBUTE, "prefix");
for (const tinyxml2::XMLElement *e = exporter->FirstChildElement(); e; e = e->NextSiblingElement()) {
const std::string ename = e->Name();
if (ename == "prefix")
_exporters[prefix].addPrefix(e->GetText());
else if (ename == "suffix")
_exporters[prefix].addSuffix(e->GetText());
else
unknown_elements.insert(ename);
}
}
}
else if (markupnodename == "imported") {
for (const tinyxml2::XMLElement *librarynode = markupnode->FirstChildElement(); librarynode; librarynode = librarynode->NextSiblingElement()) {
if (strcmp(librarynode->Name(), "importer") == 0)
_importers[extension].insert(librarynode->GetText());
else
unknown_elements.insert(librarynode->Name());
}
}
else if (markupnodename == "codeblocks") {
for (const tinyxml2::XMLElement *blocknode = markupnode->FirstChildElement(); blocknode; blocknode = blocknode->NextSiblingElement()) {
const std::string blocknodename = blocknode->Name();
if (blocknodename == "block") {
const char * blockName = blocknode->Attribute("name");
if (blockName)
_executableblocks[extension].addBlock(blockName);
} else if (blocknodename == "structure") {
const char * start = blocknode->Attribute("start");
if (start)
_executableblocks[extension].setStart(start);
const char * end = blocknode->Attribute("end");
if (end)
_executableblocks[extension].setEnd(end);
const char * offset = blocknode->Attribute("offset");
if (offset)
_executableblocks[extension].setOffset(atoi(offset));
}
else
unknown_elements.insert(blocknodename);
}
}
else
unknown_elements.insert(markupnodename);
}
}
else if (nodename == "container") {
const char* const id = node->Attribute("id");
if (!id)
return Error(MISSING_ATTRIBUTE, "id");
Container& container = containers[id];
const char* const inherits = node->Attribute("inherits");
if (inherits) {
std::map<std::string, Container>::const_iterator i = containers.find(inherits);
if (i != containers.end())
container = i->second; // Take values from parent and overwrite them if necessary
else
return Error(BAD_ATTRIBUTE_VALUE, inherits);
}
const char* const startPattern = node->Attribute("startPattern");
if (startPattern)
container.startPattern = startPattern;
const char* const endPattern = node->Attribute("endPattern");
if (endPattern)
container.endPattern = endPattern;
const char* const itEndPattern = node->Attribute("itEndPattern");
if (itEndPattern)
container.itEndPattern = itEndPattern;
const char* const opLessAllowed = node->Attribute("opLessAllowed");
if (opLessAllowed)
container.opLessAllowed = std::string(opLessAllowed) == "true";
for (const tinyxml2::XMLElement *containerNode = node->FirstChildElement(); containerNode; containerNode = containerNode->NextSiblingElement()) {
const std::string containerNodeName = containerNode->Name();
if (containerNodeName == "size" || containerNodeName == "access" || containerNodeName == "other") {
for (const tinyxml2::XMLElement *functionNode = containerNode->FirstChildElement(); functionNode; functionNode = functionNode->NextSiblingElement()) {
if (std::string(functionNode->Name()) != "function") {
unknown_elements.insert(functionNode->Name());
continue;
}
const char* const functionName = functionNode->Attribute("name");
if (!functionName)
return Error(MISSING_ATTRIBUTE, "name");
const char* const action_ptr = functionNode->Attribute("action");
Container::Action action = Container::NO_ACTION;
if (action_ptr) {
std::string actionName = action_ptr;
if (actionName == "resize")
action = Container::RESIZE;
else if (actionName == "clear")
action = Container::CLEAR;
else if (actionName == "push")
action = Container::PUSH;
else if (actionName == "pop")
action = Container::POP;
else if (actionName == "find")
action = Container::FIND;
else if (actionName == "insert")
action = Container::INSERT;
else if (actionName == "erase")
action = Container::ERASE;
else if (actionName == "change-content")
action = Container::CHANGE_CONTENT;
else if (actionName == "change-internal")
action = Container::CHANGE_INTERNAL;
else if (actionName == "change")
action = Container::CHANGE;
else
return Error(BAD_ATTRIBUTE_VALUE, actionName);
}
const char* const yield_ptr = functionNode->Attribute("yields");
Container::Yield yield = Container::NO_YIELD;
if (yield_ptr) {
std::string yieldName = yield_ptr;
if (yieldName == "at_index")
yield = Container::AT_INDEX;
else if (yieldName == "item")
yield = Container::ITEM;
else if (yieldName == "buffer")
yield = Container::BUFFER;
else if (yieldName == "buffer-nt")
yield = Container::BUFFER_NT;
else if (yieldName == "start-iterator")
yield = Container::START_ITERATOR;
else if (yieldName == "end-iterator")
yield = Container::END_ITERATOR;
else if (yieldName == "iterator")
yield = Container::ITERATOR;
else if (yieldName == "size")
yield = Container::SIZE;
else if (yieldName == "empty")
yield = Container::EMPTY;
else
return Error(BAD_ATTRIBUTE_VALUE, yieldName);
}
container.functions[functionName].action = action;
container.functions[functionName].yield = yield;
}
if (containerNodeName == "size") {
const char* const templateArg = containerNode->Attribute("templateParameter");
if (templateArg)
container.size_templateArgNo = atoi(templateArg);
} else if (containerNodeName == "access") {
const char* const indexArg = containerNode->Attribute("indexOperator");
if (indexArg)
container.arrayLike_indexOp = std::string(indexArg) == "array-like";
}
} else if (containerNodeName == "type") {
const char* const templateArg = containerNode->Attribute("templateParameter");
if (templateArg)
container.type_templateArgNo = atoi(templateArg);
const char* const string = containerNode->Attribute("string");
if (string)
container.stdStringLike = std::string(string) == "std-like";
} else
unknown_elements.insert(containerNodeName);
}
}
else if (nodename == "podtype") {
const char * const name = node->Attribute("name");
if (!name)
return Error(MISSING_ATTRIBUTE, "name");
PodType podType = {0};
const char * const size = node->Attribute("size");
if (size)
podType.size = atoi(size);
const char * const sign = node->Attribute("sign");
if (sign)
podType.sign = *sign;
const std::vector<std::string> names(getnames(name));
for (unsigned int i = 0U; i < names.size(); ++i)
podtypes[names[i]] = podType;
}
else if (nodename == "platformtype") {
const char * const type_name = node->Attribute("name");
if (type_name == nullptr)
return Error(MISSING_ATTRIBUTE, "name");
const char *value = node->Attribute("value");
if (value == nullptr)
return Error(MISSING_ATTRIBUTE, "value");
PlatformType type;
type._type = value;
std::set<std::string> platform;
for (const tinyxml2::XMLElement *typenode = node->FirstChildElement(); typenode; typenode = typenode->NextSiblingElement()) {
const std::string typenodename = typenode->Name();
if (typenodename == "platform") {
const char * const type_attribute = typenode->Attribute("type");
if (type_attribute == nullptr)
return Error(MISSING_ATTRIBUTE, "type");
platform.insert(type_attribute);
} else if (typenodename == "signed")
type._signed = true;
else if (typenodename == "unsigned")
type._unsigned = true;
else if (typenodename == "long")
type._long = true;
else if (typenodename == "pointer")
type._pointer= true;
else if (typenodename == "ptr_ptr")
type._ptr_ptr = true;
else if (typenodename == "const_ptr")
type._const_ptr = true;
else
unknown_elements.insert(typenodename);
}
if (platform.empty()) {
const PlatformType * const type_ptr = platform_type(type_name, "");
if (type_ptr) {
if (*type_ptr == type)
return Error(DUPLICATE_PLATFORM_TYPE, type_name);
return Error(PLATFORM_TYPE_REDEFINED, type_name);
}
platform_types[type_name] = type;
} else {
std::set<std::string>::const_iterator it;
for (it = platform.begin(); it != platform.end(); ++it) {
const PlatformType * const type_ptr = platform_type(type_name, *it);
if (type_ptr) {
if (*type_ptr == type)
return Error(DUPLICATE_PLATFORM_TYPE, type_name);
return Error(PLATFORM_TYPE_REDEFINED, type_name);
}
platforms[*it]._platform_types[type_name] = type;
}
}
}
else
unknown_elements.insert(nodename);
}
if (!unknown_elements.empty()) {
std::string str;
for (std::set<std::string>::const_iterator i = unknown_elements.begin(); i != unknown_elements.end();) {
str += *i;
if (++i != unknown_elements.end())
str += ", ";
}
return Error(UNKNOWN_ELEMENT, str);
}
return Error(OK);
}
Library::Error Library::loadFunction(const tinyxml2::XMLElement * const node, const std::string &name, std::set<std::string> &unknown_elements)
{
if (name.empty())
return Error(OK);
for (const tinyxml2::XMLElement *functionnode = node->FirstChildElement(); functionnode; functionnode = functionnode->NextSiblingElement()) {
const std::string functionnodename = functionnode->Name();
if (functionnodename == "noreturn")
_noreturn[name] = (strcmp(functionnode->GetText(), "true") == 0);
else if (functionnodename == "pure")
functionpure.insert(name);
else if (functionnodename == "const") {
functionconst.insert(name);
functionpure.insert(name); // a constant function is pure
} else if (functionnodename == "leak-ignore")
leakignore.insert(name);
else if (functionnodename == "use-retval")
_useretval.insert(name);
else if (functionnodename == "arg" && functionnode->Attribute("nr") != nullptr) {
const bool bAnyArg = strcmp(functionnode->Attribute("nr"),"any")==0;
const int nr = (bAnyArg) ? -1 : atoi(functionnode->Attribute("nr"));
bool notbool = false;
bool notnull = false;
bool notuninit = false;
bool formatstr = false;
bool strz = false;
std::string& valid = argumentChecks[name][nr].valid;
std::list<ArgumentChecks::MinSize>& minsizes = argumentChecks[name][nr].minsizes;
for (const tinyxml2::XMLElement *argnode = functionnode->FirstChildElement(); argnode; argnode = argnode->NextSiblingElement()) {
const std::string argnodename = argnode->Name();
if (argnodename == "not-bool")
notbool = true;
else if (argnodename == "not-null")
notnull = true;
else if (argnodename == "not-uninit")
notuninit = true;
else if (argnodename == "formatstr")
formatstr = true;
else if (argnodename == "strz")
strz = true;
else if (argnodename == "valid") {
// Validate the validation expression
const char *p = argnode->GetText();
bool error = false;
bool range = false;
for (; *p; p++) {
if (std::isdigit(*p))
error |= (*(p+1) == '-');
else if (*p == ':')
error |= range;
else if (*p == '-')
error |= (!std::isdigit(*(p+1)));
else if (*p == ',')
range = false;
else
error = true;
range |= (*p == ':');
}
if (error)
return Error(BAD_ATTRIBUTE_VALUE, argnode->GetText());
// Set validation expression
valid = argnode->GetText();
}
else if (argnodename == "minsize") {
const char *typeattr = argnode->Attribute("type");
if (!typeattr)
return Error(MISSING_ATTRIBUTE, "type");
ArgumentChecks::MinSize::Type type;
if (strcmp(typeattr,"strlen")==0)
type = ArgumentChecks::MinSize::STRLEN;
else if (strcmp(typeattr,"argvalue")==0)
type = ArgumentChecks::MinSize::ARGVALUE;
else if (strcmp(typeattr,"sizeof")==0)
type = ArgumentChecks::MinSize::SIZEOF;
else if (strcmp(typeattr,"mul")==0)
type = ArgumentChecks::MinSize::MUL;
else
return Error(BAD_ATTRIBUTE_VALUE, typeattr);
const char *argattr = argnode->Attribute("arg");
if (!argattr)
return Error(MISSING_ATTRIBUTE, "arg");
if (strlen(argattr) != 1 || argattr[0]<'0' || argattr[0]>'9')
return Error(BAD_ATTRIBUTE_VALUE, argattr);
minsizes.push_back(ArgumentChecks::MinSize(type,argattr[0]-'0'));
if (type == ArgumentChecks::MinSize::MUL) {
const char *arg2attr = argnode->Attribute("arg2");
if (!arg2attr)
return Error(MISSING_ATTRIBUTE, "arg2");
if (strlen(arg2attr) != 1 || arg2attr[0]<'0' || arg2attr[0]>'9')
return Error(BAD_ATTRIBUTE_VALUE, arg2attr);
minsizes.back().arg2 = arg2attr[0] - '0';
}
}
else
unknown_elements.insert(argnodename);
}
argumentChecks[name][nr].notbool = notbool;
argumentChecks[name][nr].notnull = notnull;
argumentChecks[name][nr].notuninit = notuninit;
argumentChecks[name][nr].formatstr = formatstr;
argumentChecks[name][nr].strz = strz;
} else if (functionnodename == "ignorefunction") {
_ignorefunction.insert(name);
} else if (functionnodename == "formatstr") {
const tinyxml2::XMLAttribute* scan = functionnode->FindAttribute("scan");
const tinyxml2::XMLAttribute* secure = functionnode->FindAttribute("secure");
_formatstr[name] = std::make_pair(scan && scan->BoolValue(), secure && secure->BoolValue());
} else if (functionnodename == "warn") {
WarnInfo wi;
const char* const severity = functionnode->Attribute("severity");
if (severity == nullptr)
return Error(MISSING_ATTRIBUTE, "severity");
wi.severity = Severity::fromString(severity);
const char* const cstd = functionnode->Attribute("cstd");
if (cstd) {
if (!wi.standards.setC(cstd))
return Error(BAD_ATTRIBUTE_VALUE, cstd);
} else
wi.standards.c = Standards::C89;
const char* const cppstd = functionnode->Attribute("cppstd");
if (cppstd) {
if (!wi.standards.setCPP(cppstd))
return Error(BAD_ATTRIBUTE_VALUE, cppstd);
} else
wi.standards.cpp = Standards::CPP03;
const char* const reason = functionnode->Attribute("reason");
const char* const alternatives = functionnode->Attribute("alternatives");
if (reason && alternatives) {
// Construct message
wi.message = std::string(reason) + " function '" + name + "' called. It is recommended to use ";
std::vector<std::string> alt = getnames(alternatives);
for (std::size_t i = 0; i < alt.size(); ++i) {
wi.message += "'" + alt[i] + "'";
if (i == alt.size() - 1)
wi.message += " instead.";
else if (i == alt.size() - 2)
wi.message += " or ";
else
wi.message += ", ";
}
} else
wi.message = functionnode->GetText();
functionwarn[name] = wi;
} else
unknown_elements.insert(functionnodename);
}
return Error(OK);
}
bool Library::isargvalid(const Token *ftok, int argnr, const MathLib::bigint argvalue) const
{
const ArgumentChecks *ac = getarg(ftok, argnr);
if (!ac || ac->valid.empty())
return true;
TokenList tokenList(0);
std::istringstream istr(ac->valid + ',');
tokenList.createTokens(istr);
for (Token *tok = tokenList.front(); tok; tok = tok->next()) {
if (Token::Match(tok,"- %num%")) {
tok->str("-" + tok->strAt(1));
tok->deleteNext();
}
}
for (const Token *tok = tokenList.front(); tok; tok = tok->next()) {
if (tok->isNumber() && argvalue == MathLib::toLongNumber(tok->str()))
return true;
if (Token::Match(tok, "%num% : %num%") && argvalue >= MathLib::toLongNumber(tok->str()) && argvalue <= MathLib::toLongNumber(tok->strAt(2)))
return true;
if (Token::Match(tok, "%num% : ,") && argvalue >= MathLib::toLongNumber(tok->str()))
return true;
if ((!tok->previous() || tok->previous()->str() == ",") && Token::Match(tok,": %num%") && argvalue <= MathLib::toLongNumber(tok->strAt(1)))
return true;
}
return false;
}
static std::string functionName(const Token *ftok, bool *error)
{
if (!ftok) {
*error = true;
return "";
}
if (ftok->isName())
return ftok->str();
if (ftok->str() == "::") {
if (!ftok->astOperand2())
return functionName(ftok->astOperand1(), error);
return functionName(ftok->astOperand1(),error) + "::" + functionName(ftok->astOperand2(),error);
}
if (ftok->str() == "." && ftok->astOperand1()) {
const std::string type = astCanonicalType(ftok->astOperand1());
if (type.empty()) {
*error = true;
return "";
}
return type + "::" + functionName(ftok->astOperand2(),error);
}
*error = true;
return "";
}
static std::string functionName(const Token *ftok)
{
if (!Token::Match(ftok, "%name% ("))
return "";
// Lookup function name using AST..
if (ftok->astParent()) {
bool error = false;
std::string ret = functionName(ftok->next()->astOperand1(), &error);
return error ? std::string() : ret;
}
// Lookup function name without using AST..
if (Token::simpleMatch(ftok->previous(), "."))
return "";
if (!Token::Match(ftok->tokAt(-2), "%name% ::"))
return ftok->str();
std::string ret(ftok->str());
ftok = ftok->tokAt(-2);
while (Token::Match(ftok, "%name% ::")) {
ret = ftok->str() + "::" + ret;
ftok = ftok->tokAt(-2);
}
return ret;
}
bool Library::isnullargbad(const Token *ftok, int argnr) const
{
const ArgumentChecks *arg = getarg(ftok, argnr);
if (!arg) {
// scan format string argument should not be null
const std::string funcname = functionName(ftok);
std::map<std::string, std::pair<bool, bool> >::const_iterator it = _formatstr.find(funcname);
if (it != _formatstr.end() && it->second.first)
return true;
}
return arg && arg->notnull;
}
bool Library::isuninitargbad(const Token *ftok, int argnr) const
{
const ArgumentChecks *arg = getarg(ftok, argnr);
if (!arg) {
// non-scan format string argument should not be uninitialized
const std::string funcname = functionName(ftok);
std::map<std::string, std::pair<bool, bool> >::const_iterator it = _formatstr.find(funcname);
if (it != _formatstr.end() && !it->second.first)
return true;
}
return arg && arg->notuninit;
}
/** get allocation id for function */
int Library::alloc(const Token *tok) const
{
const std::string funcname = functionName(tok);
return isNotLibraryFunction(tok) && argumentChecks.find(funcname) != argumentChecks.end() ? 0 : getid(_alloc, funcname);
}
/** get deallocation id for function */
int Library::dealloc(const Token *tok) const
{
const std::string funcname = functionName(tok);
return isNotLibraryFunction(tok) && argumentChecks.find(funcname) != argumentChecks.end() ? 0 : getid(_dealloc, funcname);
}
const Library::ArgumentChecks * Library::getarg(const Token *ftok, int argnr) const
{
if (isNotLibraryFunction(ftok))
return nullptr;
std::map<std::string, std::map<int, ArgumentChecks> >::const_iterator it1;
it1 = argumentChecks.find(functionName(ftok));
if (it1 == argumentChecks.end())
return nullptr;
const std::map<int,ArgumentChecks>::const_iterator it2 = it1->second.find(argnr);
if (it2 != it1->second.end())
return &it2->second;
const std::map<int,ArgumentChecks>::const_iterator it3 = it1->second.find(-1);
if (it3 != it1->second.end())
return &it3->second;
return nullptr;
}
bool Library::isScopeNoReturn(const Token *end, std::string *unknownFunc) const
{
if (unknownFunc)
unknownFunc->clear();
if (!Token::simpleMatch(end->tokAt(-2), ") ; }"))
return false;
const Token *funcname = end->linkAt(-2)->previous();
const Token *start = funcname;
if (Token::Match(funcname->tokAt(-3),"( * %name% )")) {
funcname = funcname->previous();
start = funcname->tokAt(-3);
} else if (funcname->isName()) {
while (Token::Match(start, "%name%|.|::"))
start = start->previous();
} else {
return false;
}
if (Token::Match(start,"[;{}]") && Token::Match(funcname, "%name% )| (")) {
if (funcname->str() == "exit")
return true;
if (!isnotnoreturn(funcname)) {
if (unknownFunc && !isnoreturn(funcname))
*unknownFunc = funcname->str();
return true;
}
}
return false;
}
const Library::Container* Library::detectContainer(const Token* typeStart, bool iterator) const
{
for (std::map<std::string, Container>::const_iterator i = containers.begin(); i != containers.end(); ++i) {
const Container& container = i->second;
if (container.startPattern.empty())
continue;
if (Token::Match(typeStart, container.startPattern.c_str())) {
if (!iterator && container.endPattern.empty()) // If endPattern is undefined, it will always match, but itEndPattern has to be defined.
return &container;
for (const Token* tok = typeStart; tok && !tok->varId(); tok = tok->next()) {
if (tok->link()) {
const std::string& endPattern = iterator ? container.itEndPattern : container.endPattern;
if (Token::Match(tok->link(), endPattern.c_str()))
return &container;
break;
}
}
}
}
return nullptr;
}
// returns true if ftok is not a library function
bool Library::isNotLibraryFunction(const Token *ftok) const
{
if (ftok->function() && ftok->function()->nestedIn && ftok->function()->nestedIn->type != Scope::eGlobal)
return true;
// variables are not library functions.
if (ftok->varId())
return true;
int callargs = numberOfArguments(ftok);
const std::map<std::string, std::map<int, ArgumentChecks> >::const_iterator it = argumentChecks.find(functionName(ftok));
if (it == argumentChecks.end())
return (callargs != 0);
int args = 0;
for (std::map<int, ArgumentChecks>::const_iterator it2 = it->second.begin(); it2 != it->second.end(); ++it2) {
if (it2->first > args)
args = it2->first;
if (it2->second.formatstr)
return args > callargs;
}
return args != callargs;
}
const Library::WarnInfo* Library::getWarnInfo(const Token* ftok) const
{
if (isNotLibraryFunction(ftok))
return nullptr;
std::map<std::string, WarnInfo>::const_iterator i = functionwarn.find(functionName(ftok));
if (i == functionwarn.cend())
return nullptr;
return &i->second;
}
bool Library::isUseRetVal(const Token* ftok) const
{
return (!isNotLibraryFunction(ftok) &&
_useretval.find(functionName(ftok)) != _useretval.end());
}
bool Library::isnoreturn(const Token *ftok) const
{
if (ftok->function() && ftok->function()->isAttributeNoreturn())
return true;
if (isNotLibraryFunction(ftok))
return false;
std::map<std::string, bool>::const_iterator it = _noreturn.find(functionName(ftok));
return (it != _noreturn.end() && it->second);
}
bool Library::isnotnoreturn(const Token *ftok) const
{
if (ftok->function() && ftok->function()->isAttributeNoreturn())
return false;
if (isNotLibraryFunction(ftok))
return false;
std::map<std::string, bool>::const_iterator it = _noreturn.find(functionName(ftok));
return (it != _noreturn.end() && !it->second);
}
bool Library::markupFile(const std::string &path) const
{
return _markupExtensions.find(Path::getFilenameExtensionInLowerCase(path)) != _markupExtensions.end();
}
bool Library::processMarkupAfterCode(const std::string &path) const
{
const std::map<std::string, bool>::const_iterator it = _processAfterCode.find(Path::getFilenameExtensionInLowerCase(path));
return (it == _processAfterCode.end() || it->second);
}
bool Library::reportErrors(const std::string &path) const
{
const std::map<std::string, bool>::const_iterator it = _reporterrors.find(Path::getFilenameExtensionInLowerCase(path));
return (it == _reporterrors.end() || it->second);
}
bool Library::isexecutableblock(const std::string &file, const std::string &token) const
{
const std::map<std::string, CodeBlock>::const_iterator it = _executableblocks.find(Path::getFilenameExtensionInLowerCase(file));
return (it != _executableblocks.end() && it->second.isBlock(token));
}
int Library::blockstartoffset(const std::string &file) const
{
int offset = -1;
const std::map<std::string, CodeBlock>::const_iterator map_it
= _executableblocks.find(Path::getFilenameExtensionInLowerCase(file));
if (map_it != _executableblocks.end()) {
offset = map_it->second.offset();
}
return offset;
}
const std::string& Library::blockstart(const std::string &file) const
{
const std::map<std::string, CodeBlock>::const_iterator map_it
= _executableblocks.find(Path::getFilenameExtensionInLowerCase(file));
if (map_it != _executableblocks.end()) {
return map_it->second.start();
}
return emptyString;
}
const std::string& Library::blockend(const std::string &file) const
{
const std::map<std::string, CodeBlock>::const_iterator map_it
= _executableblocks.find(Path::getFilenameExtensionInLowerCase(file));
if (map_it != _executableblocks.end()) {
return map_it->second.end();
}
return emptyString;
}
bool Library::iskeyword(const std::string &file, const std::string &keyword) const
{
const std::map<std::string, std::set<std::string> >::const_iterator it =
_keywords.find(Path::getFilenameExtensionInLowerCase(file));
return (it != _keywords.end() && it->second.count(keyword));
}
bool Library::isimporter(const std::string& file, const std::string &importer) const
{
const std::map<std::string, std::set<std::string> >::const_iterator it =
_importers.find(Path::getFilenameExtensionInLowerCase(file));
return (it != _importers.end() && it->second.count(importer) > 0);
}
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