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cppcheck/lib/symboldatabase.cpp

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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2014 Daniel Marjamäki and Cppcheck team.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
//---------------------------------------------------------------------------
#include "symboldatabase.h"
#include "tokenize.h"
#include "token.h"
#include "settings.h"
#include "errorlogger.h"
#include "check.h"
#include <string>
#include <sstream>
#include <climits>
//---------------------------------------------------------------------------
SymbolDatabase::SymbolDatabase(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger)
: _tokenizer(tokenizer), _settings(settings), _errorLogger(errorLogger)
{
// create global scope
scopeList.push_back(Scope(this, nullptr, nullptr));
// pointer to current scope
Scope *scope = &scopeList.back();
// Store current access in each scope (depends on evaluation progress)
std::map<const Scope*, AccessControl> access;
std::map<const Token *, Scope *> back;
// find all scopes
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok ? tok->next() : nullptr) {
// Locate next class
if (Token::Match(tok, "class|struct|union|namespace ::| %var% {|:|::") &&
tok->strAt(-1) != "friend") {
const Token *tok2 = tok->tokAt(2);
if (tok->strAt(1) == "::")
tok2 = tok2->next();
while (tok2 && tok2->str() == "::")
tok2 = tok2->tokAt(2);
// make sure we have valid code
if (!tok2 || !Token::Match(tok2, "{|:")) {
// check for qualified variable
if (tok2 && tok2->next()) {
if (tok2->next()->str() == ";")
tok = tok2->next();
else if (Token::simpleMatch(tok2->next(), "= {") &&
tok2->linkAt(2)->next()->str() == ";")
tok = tok2->linkAt(2)->next();
else if (Token::Match(tok2->next(), "(|{") &&
tok2->next()->link()->strAt(1) == ";")
tok = tok2->next()->link()->next();
else
break; // bail
continue;
}
break; // bail
}
Scope *new_scope = findScope(tok->next(), scope);
if (new_scope) {
// only create base list for classes and structures
if (new_scope->isClassOrStruct()) {
// goto initial '{'
tok2 = new_scope->definedType->initBaseInfo(tok, tok2);
// make sure we have valid code
if (!tok2) {
break;
}
}
// definition may be different than declaration
if (tok->str() == "class") {
access[new_scope] = Private;
new_scope->type = Scope::eClass;
} else if (tok->str() == "struct") {
access[new_scope] = Public;
new_scope->type = Scope::eStruct;
}
back[tok2->link()] = scope;
new_scope->classDef = tok;
new_scope->classStart = tok2;
new_scope->classEnd = tok2->link();
scope = new_scope;
tok = tok2;
} else {
scopeList.push_back(Scope(this, tok, scope));
new_scope = &scopeList.back();
if (tok->str() == "class")
access[new_scope] = Private;
else if (tok->str() == "struct")
access[new_scope] = Public;
// fill typeList...
if (new_scope->isClassOrStruct() || new_scope->type == Scope::eUnion) {
Type* new_type = findType(tok->next(), scope);
if (!new_type) {
typeList.push_back(Type(new_scope->classDef, new_scope, scope));
new_type = &typeList.back();
scope->definedTypes.push_back(new_type);
} else
new_type->classScope = new_scope;
new_scope->definedType = new_type;
}
// only create base list for classes and structures
if (new_scope->isClassOrStruct()) {
// goto initial '{'
tok2 = new_scope->definedType->initBaseInfo(tok, tok2);
// make sure we have valid code
if (!tok2) {
_tokenizer->syntaxError(tok);
}
}
new_scope->classStart = tok2;
new_scope->classEnd = tok2->link();
// make sure we have valid code
if (!new_scope->classEnd) {
_tokenizer->syntaxError(tok);
}
// make the new scope the current scope
scope->nestedList.push_back(new_scope);
scope = new_scope;
tok = tok2;
}
}
// Namespace and unknown macro (#3854)
else if (Token::Match(tok, "namespace %var% %type% (") &&
_tokenizer->isCPP() &&
tok->tokAt(2)->isUpperCaseName() &&
Token::simpleMatch(tok->linkAt(3), ") {")) {
scopeList.push_back(Scope(this, tok, scope));
Scope *new_scope = &scopeList.back();
access[new_scope] = Public;
const Token *tok2 = tok->linkAt(3)->next();
new_scope->classStart = tok2;
new_scope->classEnd = tok2->link();
// make sure we have valid code
if (!new_scope->classEnd) {
scopeList.pop_back();
break;
}
// make the new scope the current scope
scope->nestedList.push_back(new_scope);
scope = &scopeList.back();
tok = tok2;
}
// forward declaration
else if (Token::Match(tok, "class|struct|union %var% ;") &&
tok->strAt(-1) != "friend") {
if (!findType(tok->next(), scope)) {
// fill typeList..
typeList.push_back(Type(tok, 0, scope));
scope->definedTypes.push_back(&typeList.back());
}
tok = tok->tokAt(2);
}
// using namespace
else if (Token::Match(tok, "using namespace ::| %type% ;|::")) {
Scope::UsingInfo using_info;
using_info.start = tok; // save location
using_info.scope = 0; // fill in later
scope->usingList.push_back(using_info);
// check for global namespace
if (tok->strAt(2) == "::")
tok = tok->tokAt(4);
else
tok = tok->tokAt(3);
// skip over qualification
while (tok && Token::Match(tok, "%type% ::"))
tok = tok->tokAt(2);
}
// unnamed struct and union
else if (Token::Match(tok, "struct|union {") &&
Token::Match(tok->next()->link(), "} *|&| %var% ;|[")) {
scopeList.push_back(Scope(this, tok, scope));
Scope *new_scope = &scopeList.back();
access[new_scope] = Public;
const Token* varNameTok = tok->next()->link()->next();
if (varNameTok->str() == "*") {
varNameTok = varNameTok->next();
} else if (varNameTok->str() == "&") {
varNameTok = varNameTok->next();
}
typeList.push_back(Type(tok, new_scope, scope));
new_scope->definedType = &typeList.back();
scope->definedTypes.push_back(&typeList.back());
scope->addVariable(varNameTok, tok, tok, access[scope], new_scope->definedType, scope);
const Token *tok2 = tok->next();
new_scope->classStart = tok2;
new_scope->classEnd = tok2->link();
// make sure we have valid code
if (!new_scope->classEnd) {
scopeList.pop_back();
break;
}
// make the new scope the current scope
scope->nestedList.push_back(new_scope);
scope = new_scope;
tok = tok2;
}
// anonymous struct and union
else if (Token::Match(tok, "struct|union {") &&
Token::simpleMatch(tok->next()->link(), "} ;")) {
scopeList.push_back(Scope(this, tok, scope));
Scope *new_scope = &scopeList.back();
access[new_scope] = Public;
const Token *tok2 = tok->next();
new_scope->classStart = tok2;
new_scope->classEnd = tok2->link();
typeList.push_back(Type(tok, new_scope, scope));
new_scope->definedType = &typeList.back();
scope->definedTypes.push_back(&typeList.back());
// make sure we have valid code
if (!new_scope->classEnd) {
scopeList.pop_back();
break;
}
// make the new scope the current scope
scope->nestedList.push_back(new_scope);
scope = new_scope;
tok = tok2;
}
else {
// check for end of scope
if (tok == scope->classEnd) {
if (back.find(tok) != back.end()) {
scope = back[tok];
back.erase(tok);
} else
scope = const_cast<Scope*>(scope->nestedIn);
continue;
}
// check if in class or structure
else if (scope->type == Scope::eClass || scope->type == Scope::eStruct) {
const Token *funcStart = nullptr;
const Token *argStart = nullptr;
// What section are we in..
if (tok->str() == "private:")
access[scope] = Private;
else if (tok->str() == "protected:")
access[scope] = Protected;
else if (tok->str() == "public:" || tok->str() == "__published:")
access[scope] = Public;
else if (Token::Match(tok, "public|protected|private %var% :")) {
if (tok->str() == "private")
access[scope] = Private;
else if (tok->str() == "protected")
access[scope] = Protected;
else
access[scope] = Public;
tok = tok->tokAt(2);
}
// class function?
else if (isFunction(tok, scope, &funcStart, &argStart)) {
if (tok->previous()->str() != "::") {
Function function;
// save the function definition argument start '('
function.argDef = argStart;
// save the access type
function.access = access[scope];
// save the function name location
function.tokenDef = funcStart;
// save the function parent scope
function.nestedIn = scope;
// operator function
if (function.tokenDef->str().find("operator") == 0) {
function.isOperator = true;
// 'operator =' is special
if (function.tokenDef->str() == "operator=")
function.type = Function::eOperatorEqual;
}
// class constructor/destructor
else if (function.tokenDef->str() == scope->className) {
// destructor
if (function.tokenDef->previous()->str() == "~")
function.type = Function::eDestructor;
// copy/move constructor?
else if (Token::Match(function.tokenDef, "%var% ( const| %var% &|&& &| %var%| )") ||
Token::Match(function.tokenDef, "%var% ( const| %var% <")) {
const Token* typTok = function.tokenDef->tokAt(2);
if (typTok->str() == "const")
typTok = typTok->next();
if (typTok->strAt(1) == "<") { // TODO: Remove this branch (#4710)
if (Token::Match(typTok->linkAt(1), "> & %var%| )"))
function.type = Function::eCopyConstructor;
else if (Token::Match(typTok->linkAt(1), "> &&|& & %var%| )"))
function.type = Function::eMoveConstructor;
else
function.type = Function::eConstructor;
} else if (typTok->strAt(1) == "&&" || typTok->strAt(2) == "&")
function.type = Function::eMoveConstructor;
else
function.type = Function::eCopyConstructor;
if (typTok->str() != function.tokenDef->str())
function.type = Function::eConstructor; // Overwrite, if types are not identical
}
// regular constructor
else
function.type = Function::eConstructor;
if (function.tokenDef->previous()->str() == "explicit")
function.isExplicit = true;
}
// function returning function pointer
else if (tok->str() == "(") {
function.retFuncPtr = true;
}
const Token *tok1 = tok;
// look for end of previous statement
while (tok1->previous() && !Token::Match(tok1->previous(), ";|}|{|public:|protected:|private:")) {
// virtual function
if (tok1->previous()->str() == "virtual") {
function.isVirtual = true;
break;
}
// static function
else if (tok1->previous()->str() == "static") {
function.isStatic = true;
break;
}
// friend function
else if (tok1->previous()->str() == "friend") {
function.isFriend = true;
break;
}
tok1 = tok1->previous();
}
// find the return type
if (!function.isConstructor() && !function.isDestructor()) {
while (tok1 && Token::Match(tok1->next(), "virtual|static|friend|const|struct|union"))
tok1 = tok1->next();
if (tok1)
function.retDef = tok1;
}
const Token *end;
if (!function.retFuncPtr)
end = function.argDef->link();
else
end = tok->link()->next()->link();
// const function
if (end->next()->str() == "const")
function.isConst = true;
// count the number of constructors
if (function.isConstructor())
scope->numConstructors++;
if (function.type == Function::eCopyConstructor ||
function.type == Function::eMoveConstructor)
scope->numCopyOrMoveConstructors++;
// assume implementation is inline (definition and implementation same)
function.token = function.tokenDef;
function.arg = function.argDef;
// out of line function
if (Token::simpleMatch(end, ") ;")) {
// find the function implementation later
tok = end->next();
scope->functionList.push_back(function);
}
// default or delete
else if (Token::Match(end, ") = default|delete ;")) {
if (end->strAt(2) == "default")
function.isDefault = true;
else
function.isDelete = true;
tok = end->tokAt(3);
scope->functionList.push_back(function);
}
// pure virtual function
else if (Token::Match(end, ") const| = %any% ;")) {
function.isPure = true;
if (end->next()->str() == "const")
tok = end->tokAt(4);
else
tok = end->tokAt(3);
scope->functionList.push_back(function);
}
// 'const' or unknown macro (#5197)
else if (Token::Match(end, ") %any% ;")) {
tok = end->tokAt(2);
scope->functionList.push_back(function);
}
// inline function
else {
function.isInline = true;
function.hasBody = true;
// find start of function '{'
while (end && end->str() != "{" && end->str() != ";")
end = end->next();
if (!end || end->str() == ";")
continue;
scope->functionList.push_back(function);
Function* funcptr = &scope->functionList.back();
const Token *tok2 = funcStart;
addNewFunction(&scope, &tok2);
if (scope) {
scope->functionOf = function.nestedIn;
scope->function = funcptr;
scope->function->functionScope = scope;
}
tok = tok2;
}
}
// nested class or friend function?
else {
/** @todo check entire qualification for match */
Scope * nested = scope->findInNestedListRecursive(tok->strAt(-2));
if (nested)
addClassFunction(&scope, &tok, argStart);
else {
/** @todo handle friend functions */
}
}
}
// friend class declaration?
else if (Token::Match(tok, "friend class| ::| %any% ;|::")) {
Type::FriendInfo friendInfo;
// save the name start
friendInfo.nameStart = tok->strAt(1) == "class" ? tok->tokAt(2) : tok->next();
friendInfo.nameEnd = friendInfo.nameStart;
// skip leading "::"
if (friendInfo.nameEnd->str() == "::")
friendInfo.nameEnd = friendInfo.nameEnd->next();
// skip qualification "name ::"
while (friendInfo.nameEnd && friendInfo.nameEnd->strAt(1) == "::")
friendInfo.nameEnd = friendInfo.nameEnd->tokAt(2);
// save the name
if (friendInfo.nameEnd)
friendInfo.name = friendInfo.nameEnd->str();
// fill this in after parsing is complete
friendInfo.type = 0;
scope->definedType->friendList.push_back(friendInfo);
}
} else if (scope->type == Scope::eNamespace || scope->type == Scope::eGlobal) {
const Token *funcStart = nullptr;
const Token *argStart = nullptr;
// function?
if (isFunction(tok, scope, &funcStart, &argStart)) {
bool retFuncPtr = Token::simpleMatch(argStart->link(), ") ) (");
const Token* scopeBegin = argStart->link()->next();
if (retFuncPtr)
scopeBegin = scopeBegin->next()->link()->next();
if (scopeBegin->isName()) { // Jump behind 'const' or unknown Macro
scopeBegin = scopeBegin->next();
if (scopeBegin->link() && scopeBegin->str() == "(") // Jump behind unknown macro of type THROW(...)
scopeBegin = scopeBegin->link()->next();
}
// has body?
if (scopeBegin->str() == "{" || scopeBegin->str() == ":") {
tok = funcStart;
Scope *old_scope = scope;
// class function
if (tok->previous()->str() == "::")
addClassFunction(&scope, &tok, argStart);
// class destructor
else if (tok->previous()->str() == "~" &&
tok->strAt(-2) == "::")
addClassFunction(&scope, &tok, argStart);
// regular function
else {
Function* function = addGlobalFunction(scope, tok, argStart, funcStart);
function->retFuncPtr = retFuncPtr;
}
// syntax error?
if (!scope) {
scope = old_scope;
break;
}
}
// function prototype?
else if (scopeBegin->str() == ";") {
bool newFunc = true; // Is this function already in the database?
for (std::list<Function>::const_iterator i = scope->functionList.begin(); i != scope->functionList.end(); ++i) {
if (i->tokenDef->str() == tok->str() && Function::argsMatch(scope, i->argDef->next(), argStart->next(), "", 0)) {
newFunc = false;
break;
}
}
// save function prototype in database
if (newFunc) {
Function* func = addGlobalFunctionDecl(scope, tok, argStart, funcStart);
func->retFuncPtr = retFuncPtr;
}
tok = scopeBegin;
continue;
}
}
} else if (scope->isExecutable()) {
if (Token::Match(tok, "else|try|do {")) {
const Token* tok1 = tok->next();
if (tok->str() == "else")
scopeList.push_back(Scope(this, tok, scope, Scope::eElse, tok1));
if (tok->str() == "do")
scopeList.push_back(Scope(this, tok, scope, Scope::eDo, tok1));
else if (tok->str() == "try")
scopeList.push_back(Scope(this, tok, scope, Scope::eTry, tok1));
tok = tok1;
scope->nestedList.push_back(&scopeList.back());
scope = &scopeList.back();
} else if (Token::Match(tok, "if|for|while|catch|switch (") && Token::simpleMatch(tok->next()->link(), ") {")) {
const Token *tok1 = tok->next()->link()->next();
if (tok->str() == "if" && tok->strAt(-1) == "else")
scopeList.push_back(Scope(this, tok->previous(), scope, Scope::eElseIf, tok1));
else if (tok->str() == "if")
scopeList.push_back(Scope(this, tok, scope, Scope::eIf, tok1));
else if (tok->str() == "for") {
scopeList.push_back(Scope(this, tok, scope, Scope::eFor, tok1));
} else if (tok->str() == "while")
scopeList.push_back(Scope(this, tok, scope, Scope::eWhile, tok1));
else if (tok->str() == "catch") {
scopeList.push_back(Scope(this, tok, scope, Scope::eCatch, tok1));
} else if (tok->str() == "switch")
scopeList.push_back(Scope(this, tok, scope, Scope::eSwitch, tok1));
scope->nestedList.push_back(&scopeList.back());
scope = &scopeList.back();
if (scope->type == Scope::eFor)
scope->checkVariable(tok->tokAt(2), Local); // check for variable declaration and add it to new scope if found
else if (scope->type == Scope::eCatch)
scope->checkVariable(tok->tokAt(2), Throw); // check for variable declaration and add it to new scope if found
tok = tok1;
} else if (tok->str() == "{") {
if (!Token::Match(tok->previous(), "=|,")) {
scopeList.push_back(Scope(this, tok, scope, Scope::eUnconditional, tok));
scope->nestedList.push_back(&scopeList.back());
scope = &scopeList.back();
} else {
tok = tok->link();
}
}
}
}
}
// fill in base class info
for (std::list<Type>::iterator it = typeList.begin(); it != typeList.end(); ++it) {
// finish filling in base class info
for (unsigned int i = 0; i < it->derivedFrom.size(); ++i)
it->derivedFrom[i].type = findType(it->derivedFrom[i].nameTok, it->enclosingScope);
}
// fill in friend info
for (std::list<Type>::iterator it = typeList.begin(); it != typeList.end(); ++it) {
for (std::list<Type::FriendInfo>::iterator i = it->friendList.begin(); i != it->friendList.end(); ++i) {
i->type = findType(i->nameStart, it->enclosingScope);
}
}
// fill in using info
for (std::list<Scope>::iterator it = scopeList.begin(); it != scopeList.end(); ++it) {
for (std::list<Scope::UsingInfo>::iterator i = it->usingList.begin(); i != it->usingList.end(); ++i) {
// check scope for match
scope = findScope(i->start->tokAt(2), &(*it));
if (scope) {
// set found scope
i->scope = scope;
break;
}
}
}
// fill in variable info
for (std::list<Scope>::iterator it = scopeList.begin(); it != scopeList.end(); ++it) {
// find variables
it->getVariableList();
}
// fill in function arguments
for (std::list<Scope>::iterator it = scopeList.begin(); it != scopeList.end(); ++it) {
std::list<Function>::iterator func;
for (func = it->functionList.begin(); func != it->functionList.end(); ++func) {
// add arguments
func->addArguments(this, scope);
}
}
// fill in function scopes
for (std::list<Scope>::iterator it = scopeList.begin(); it != scopeList.end(); ++it) {
if (it->type == Scope::eFunction)
functionScopes.push_back(&*it);
}
// fill in class and struct scopes
for (std::list<Scope>::iterator it = scopeList.begin(); it != scopeList.end(); ++it) {
if (it->isClassOrStruct())
classAndStructScopes.push_back(&*it);
}
// fill in function return types
for (std::list<Scope>::iterator it = scopeList.begin(); it != scopeList.end(); ++it) {
std::list<Function>::iterator func;
for (func = it->functionList.begin(); func != it->functionList.end(); ++func) {
// add return types
if (func->retDef) {
const Token *type = func->retDef;
while (Token::Match(type, "static|const|struct|union"))
type = type->next();
if (type)
func->retType = findTypeInNested(type, func->nestedIn);
}
}
}
// determine if user defined type needs initialization
unsigned int unknowns = 0; // stop checking when there are no unknowns
unsigned int retry = 0; // bail if we don't resolve all the variable types for some reason
do {
unknowns = 0;
for (std::list<Scope>::iterator it = scopeList.begin(); it != scopeList.end(); ++it) {
scope = &(*it);
if (!scope->definedType) {
_blankTypes.push_back(Type());
scope->definedType = &_blankTypes.back();
}
if (scope->isClassOrStruct() && scope->definedType->needInitialization == Type::Unknown) {
// check for default constructor
bool hasDefaultConstructor = false;
std::list<Function>::const_iterator func;
for (func = scope->functionList.begin(); func != scope->functionList.end(); ++func) {
if (func->type == Function::eConstructor) {
// check for no arguments: func ( )
if (func->argCount() == 0) {
hasDefaultConstructor = true;
break;
}
/** check for arguments with default values */
else if (func->argCount() == func->initializedArgCount()) {
hasDefaultConstructor = true;
break;
}
}
}
// User defined types with user defined default constructor doesn't need initialization.
// We assume the default constructor initializes everything.
// Another check will figure out if the constructor actually initializes everything.
if (hasDefaultConstructor)
scope->definedType->needInitialization = Type::False;
// check each member variable to see if it needs initialization
else {
bool needInitialization = false;
bool unknown = false;
std::list<Variable>::const_iterator var;
for (var = scope->varlist.begin(); var != scope->varlist.end(); ++var) {
if (var->isClass()) {
if (var->type()) {
// does this type need initialization?
if (var->type()->needInitialization == Type::True)
needInitialization = true;
else if (var->type()->needInitialization == Type::Unknown)
unknown = true;
}
} else
needInitialization = true;
}
if (!unknown) {
if (needInitialization)
scope->definedType->needInitialization = Type::True;
else
scope->definedType->needInitialization = Type::False;
}
if (scope->definedType->needInitialization == Type::Unknown)
unknowns++;
}
} else if (scope->type == Scope::eUnion && scope->definedType->needInitialization == Type::Unknown)
scope->definedType->needInitialization = Type::True;
}
retry++;
} while (unknowns && retry < 100);
// this shouldn't happen so output a debug warning
if (retry == 100 && _settings->debugwarnings) {
for (std::list<Scope>::iterator it = scopeList.begin(); it != scopeList.end(); ++it) {
scope = &(*it);
if (scope->isClassOrStruct() && scope->definedType->needInitialization == Type::Unknown)
debugMessage(scope->classDef, "SymbolDatabase::SymbolDatabase couldn't resolve all user defined types.");
}
}
// create variable symbol table
_variableList.resize(_tokenizer->varIdCount() + 1);
std::fill_n(_variableList.begin(), _variableList.size(), (const Variable*)nullptr);
// check all scopes for variables
for (std::list<Scope>::iterator it = scopeList.begin(); it != scopeList.end(); ++it) {
scope = &(*it);
// add all variables
std::list<Variable>::iterator var;
for (var = scope->varlist.begin(); var != scope->varlist.end(); ++var) {
unsigned int varId = var->declarationId();
if (varId)
_variableList[varId] = &(*var);
// fix up variables without type
if (!var->type() && !var->typeStartToken()->isStandardType()) {
const Type *type = findType(var->typeStartToken(), scope);
if (type)
var->type(type);
}
}
// add all function parameters
std::list<Function>::iterator func;
for (func = scope->functionList.begin(); func != scope->functionList.end(); ++func) {
std::list<Variable>::iterator arg;
for (arg = func->argumentList.begin(); arg != func->argumentList.end(); ++arg) {
// check for named parameters
if (arg->nameToken() && arg->declarationId()) {
const unsigned int declarationId = arg->declarationId();
if (declarationId > 0U)
_variableList[declarationId] = &(*arg);
// fix up parameters without type
if (!arg->type() && !arg->typeStartToken()->isStandardType()) {
const Type *type = findTypeInNested(arg->typeStartToken(), scope);
if (type)
arg->type(type);
}
}
}
}
}
// fill in missing variables if possible
const std::size_t functions = functionScopes.size();
for (std::size_t i = 0; i < functions; ++i) {
const Scope *func = functionScopes[i];
for (const Token *tok = func->classStart->next(); tok != func->classEnd; tok = tok->next()) {
// check for member variable
if (tok && tok->varId() && tok->next() &&
(tok->next()->str() == "." ||
(tok->next()->str() == "[" && tok->linkAt(1)->strAt(1) == "."))) {
const Token *tok1 = tok->next()->str() == "." ? tok->tokAt(2) : tok->linkAt(1)->tokAt(2);
if (tok1 && tok1->varId() && _variableList[tok1->varId()] == 0) {
const Variable *var = _variableList[tok->varId()];
if (var && var->typeScope()) {
// find the member variable of this variable
const Variable *var1 = var->typeScope()->getVariable(tok1->str());
if (var1) {
// add this variable to the look up table
_variableList[tok1->varId()] = var1;
}
}
}
}
}
}
/* set all unknown array dimensions that are set by a variable to the maximum size of that variable type */
for (std::size_t i = 1; i <= _tokenizer->varIdCount(); i++) {
// check each array variable
if (_variableList[i] && _variableList[i]->isArray()) {
// check each array dimension
for (std::size_t j = 0; j < _variableList[i]->dimensions().size(); j++) {
Dimension &dimension = const_cast<Dimension &>(_variableList[i]->dimensions()[j]);
// check for a single token dimension that is a variable
if (dimension.num == 0) {
dimension.known = false;
if (!dimension.start || (dimension.start != dimension.end) || !dimension.start->varId())
continue;
// get maximum size from type
// find where this type is defined
const Variable *var = getVariableFromVarId(dimension.start->varId());
// make sure it is in the database
if (!var)
break;
// get type token
const Token *index_type = var->typeEndToken();
if (index_type->str() == "char") {
if (index_type->isUnsigned())
dimension.num = UCHAR_MAX + 1;
else if (index_type->isSigned())
dimension.num = SCHAR_MAX + 1;
else
dimension.num = CHAR_MAX + 1;
} else if (index_type->str() == "short") {
if (index_type->isUnsigned())
dimension.num = USHRT_MAX + 1;
else
dimension.num = SHRT_MAX + 1;
}
// checkScope assumes size is signed int so we limit the following sizes to INT_MAX
else if (index_type->str() == "int") {
if (index_type->isUnsigned())
dimension.num = UINT_MAX + 1ULL;
else
dimension.num = INT_MAX + 1ULL;
} else if (index_type->str() == "long") {
if (index_type->isUnsigned()) {
if (index_type->isLong())
dimension.num = ULLONG_MAX; // should be ULLONG_MAX + 1ULL
else
dimension.num = ULONG_MAX; // should be ULONG_MAX + 1ULL
} else {
if (index_type->isLong())
dimension.num = LLONG_MAX; // should be LLONG_MAX + 1LL
else
dimension.num = LONG_MAX; // should be LONG_MAX + 1LL
}
}
}
}
}
}
}
bool SymbolDatabase::isFunction(const Token *tok, const Scope* outerScope, const Token **funcStart, const Token **argStart)
{
// function returning function pointer? '... ( ... %var% ( ... ))( ... ) {'
if (tok->str() == "(" &&
tok->link()->previous()->str() == ")") {
const Token* tok2 = tok->link()->next();
if (tok2 && tok2->str() == "(" && Token::Match(tok2->link()->next(), "{|;|const|=")) {
*funcStart = tok->link()->previous()->link()->previous();
*argStart = tok->link()->previous()->link();
return true;
}
}
// regular function?
else if (Token::Match(tok, "%var% (") && tok->previous() &&
(tok->previous()->isName() || tok->strAt(-1) == ">" || tok->strAt(-1) == "&" || tok->strAt(-1) == "*" || // Either a return type in front of tok
tok->strAt(-1) == "::" || tok->strAt(-1) == "~" || // or a scope qualifier in front of tok
outerScope->isClassOrStruct())) { // or a ctor/dtor
const Token* tok2 = tok->next()->link()->next();
if ((Token::Match(tok2, "const| ;|{|=") ||
(Token::Match(tok2, "%var% ;|{") && tok2->isUpperCaseName()) ||
(Token::Match(tok2, "%var% (") && tok2->isUpperCaseName() && tok2->next()->link()->strAt(1) == "{") ||
Token::Match(tok2, ": ::| %var% (|::|<|{") ||
Token::Match(tok2, "= delete|default ;"))) {
*funcStart = tok;
*argStart = tok->next();
return true;
}
}
// template constructor?
else if (Token::Match(tok, "%var% <") && Token::simpleMatch(tok->next()->link(), "> (")) {
const Token* tok2 = tok->next()->link()->next()->link();
if (Token::Match(tok2, ") const| ;|{|=") ||
Token::Match(tok2, ") : ::| %var% (|::|<|{")) {
*funcStart = tok;
*argStart = tok2->link();
return true;
}
}
return false;
}
void Variable::evaluate()
{
const Token* tok = _start;
while (tok && tok->previous() && tok->previous()->isName())
tok = tok->previous();
for (const Token* const end = _name?_name:_end; tok != end;) {
if (tok->str() == "static")
setFlag(fIsStatic, true);
else if (tok->str() == "extern")
setFlag(fIsExtern, true);
else if (tok->str() == "mutable")
setFlag(fIsMutable, true);
else if (tok->str() == "const")
setFlag(fIsConst, true);
else if (tok->str() == "*") {
setFlag(fIsPointer, true);
setFlag(fIsConst, false); // Points to const, isn't necessarily const itself
} else if (tok->str() == "&") {
if (isReference())
setFlag(fIsRValueRef, true);
setFlag(fIsReference, true);
} else if (tok->str() == "&&") { // Before simplification, && isn't split up
setFlag(fIsRValueRef, true);
setFlag(fIsReference, true); // Set also fIsReference
}
if (tok->str() == "<" && tok->link())
tok = tok->link();
else
tok = tok->next();
}
while (_start && _start->next() && (_start->str() == "static" || _start->str() == "const"))
_start = _start->next();
while (_end && _end->previous() && _end->str() == "const")
_end = _end->previous();
if (_name)
setFlag(fIsArray, arrayDimensions(_dimensions, _name->next()));
if (_start) {
setFlag(fIsClass, !_start->isStandardType() && !isPointer() && !isReference());
_stlType = Token::simpleMatch(_start, "std ::");
}
if (_access == Argument) {
tok = _name;
if (!tok) {
// Argument without name
tok = _end;
// back up to start of array dimensions
while (tok && tok->str() == "]")
tok = tok->link()->previous();
// add array dimensions if present
if (tok && tok->next()->str() == "[")
setFlag(fIsArray, arrayDimensions(_dimensions, tok->next()));
}
if (!tok)
return;
tok = tok->next();
while (tok->str() == "[")
tok = tok->link();
setFlag(fHasDefault, tok->str() == "=");
}
// check for C++11 member initialization
if (_scope && _scope->isClassOrStruct()) {
// type var = x; gets simplified to: type var ; var = x ;
if (Token::Match(_name, "%var% ; %var% = %any% ;") && _name->strAt(2) == _name->str())
setFlag(fHasDefault, true);
}
}
bool Function::argsMatch(const Scope *scope, const Token *first, const Token *second, const std::string &path, unsigned int depth)
{
const bool isCPP = scope->check->isCPP();
// skip "struct" if it is C++
if (isCPP) {
if (first->str() == "struct")
first = first->next();
if (second->str() == "struct")
second = second->next();
}
// skip const on type passed by value
if (Token::Match(first, "const %type% %var%|,|)"))
first = first->next();
if (Token::Match(second, "const %type% %var%|,|)"))
second = second->next();
while (first->str() == second->str() &&
first->isLong() == second->isLong() &&
first->isUnsigned() == second->isUnsigned()) {
// at end of argument list
if (first->str() == ")") {
return true;
}
// skip default value assignment
else if (first->next()->str() == "=") {
first = first->nextArgument();
if (first)
first = first->tokAt(-2);
if (second->next()->str() == "=") {
second = second->nextArgument();
if (second)
second = second->tokAt(-2);
if (!first || !second) { // End of argument list (first or second)
return !first && !second;
}
} else if (!first) { // End of argument list (first)
return second->next() && second->next()->str() == ")";
}
} else if (second->next()->str() == "=") {
second = second->nextArgument();
if (second)
second = second->tokAt(-2);
if (!first || !second) { // End of argument list (first or second)
return !first && !second;
}
}
// definition missing variable name
else if (first->next()->str() == "," && second->next()->str() != ",") {
second = second->next();
// skip default value assignment
if (second->next()->str() == "=") {
while (!Token::Match(second->next(), ",|)"))
second = second->next();
}
} else if (first->next()->str() == ")" && second->next()->str() != ")") {
second = second->next();
// skip default value assignment
if (second->next()->str() == "=") {
while (!Token::Match(second->next(), ",|)"))
second = second->next();
}
} else if (first->next()->str() == "[" && second->next()->str() != "[")
second = second->next();
// function missing variable name
else if (second->next()->str() == "," && first->next()->str() != ",") {
first = first->next();
// skip default value assignment
if (first->next()->str() == "=") {
while (!Token::Match(first->next(), ",|)"))
first = first->next();
}
} else if (second->next()->str() == ")" && first->next()->str() != ")") {
first = first->next();
// skip default value assignment
if (first->next()->str() == "=") {
while (!Token::Match(first->next(), ",|)"))
first = first->next();
}
} else if (second->next()->str() == "[" && first->next()->str() != "[")
first = first->next();
// argument list has different number of arguments
else if (second->str() == ")")
break;
// variable names are different
else if ((Token::Match(first->next(), "%var% ,|)|=") &&
Token::Match(second->next(), "%var% ,|)")) &&
(first->next()->str() != second->next()->str())) {
// skip variable names
first = first->next();
second = second->next();
}
// variable with class path
else if (depth && Token::Match(first->next(), "%var%")) {
std::string param = path + first->next()->str();
if (Token::Match(second->next(), param.c_str())) {
second = second->tokAt(int(depth) * 2);
} else if (depth > 1) {
std::string short_path = path;
// remove last " :: "
short_path.resize(short_path.size() - 4);
// remove last name
while (!short_path.empty() && short_path[short_path.size() - 1] != ' ')
short_path.resize(short_path.size() - 1);
param = short_path + first->next()->str();
if (Token::Match(second->next(), param.c_str())) {
second = second->tokAt((int(depth) - 1) * 2);
}
}
}
// nested class variable
else if (depth == 0 && Token::Match(first->next(), "%var%") &&
second->next()->str() == scope->className && second->strAt(2) == "::" &&
first->next()->str() == second->strAt(3)) {
second = second->tokAt(2);
}
first = first->next();
second = second->next();
// skip "struct" if it is C++
if (isCPP) {
if (first->str() == "struct")
first = first->next();
if (second->str() == "struct")
second = second->next();
}
// skip const on type passed by value
if (Token::Match(first, "const %type% %var%|,|)"))
first = first->next();
if (Token::Match(second, "const %type% %var%|,|)"))
second = second->next();
}
return false;
}
Function* SymbolDatabase::addGlobalFunction(Scope*& scope, const Token*& tok, const Token *argStart, const Token* funcStart)
{
Function* function = 0;
for (std::list<Function>::iterator i = scope->functionList.begin(); i != scope->functionList.end(); ++i) {
if (i->tokenDef->str() == tok->str() && Function::argsMatch(scope, i->argDef->next(), argStart->next(), "", 0)) {
function = &*i;
// copy attributes from function prototype to function
const_cast<Token *>(tok)->isAttributeConstructor(i->tokenDef->isAttributeConstructor());
const_cast<Token *>(tok)->isAttributeDestructor(i->tokenDef->isAttributeDestructor());
const_cast<Token *>(tok)->isAttributePure(i->tokenDef->isAttributePure());
const_cast<Token *>(tok)->isAttributeConst(i->tokenDef->isAttributeConst());
break;
}
}
if (!function)
function = addGlobalFunctionDecl(scope, tok, argStart, funcStart);
function->arg = argStart;
function->token = funcStart;
function->hasBody = true;
addNewFunction(&scope, &tok);
if (scope) {
scope->function = function;
function->functionScope = scope;
return function;
}
return 0;
}
Function* SymbolDatabase::addGlobalFunctionDecl(Scope*& scope, const Token *tok, const Token *argStart, const Token* funcStart)
{
Function function;
// save the function definition argument start '('
function.argDef = argStart;
// save the access type
function.access = Public;
// save the function name location
function.tokenDef = funcStart;
function.isInline = false;
function.hasBody = false;
function.type = Function::eFunction;
function.nestedIn = scope;
const Token *tok1 = tok;
// look for end of previous statement
while (tok1->previous() && !Token::Match(tok1->previous(), ";|}|{"))
tok1 = tok1->previous();
// find the return type
while (tok1 && Token::Match(tok1->next(), "static|const"))
tok1 = tok1->next();
if (tok1)
function.retDef = tok1;
scope->functionList.push_back(function);
return &scope->functionList.back();
}
void SymbolDatabase::addClassFunction(Scope **scope, const Token **tok, const Token *argStart)
{
int count = 0;
std::string path;
unsigned int path_length = 0;
const Token *tok1;
const bool destructor((*tok)->previous()->str() == "~");
// skip class/struct name
if (destructor)
tok1 = (*tok)->tokAt(-3);
else
tok1 = (*tok)->tokAt(-2);
// syntax error?
if (!tok1)
return;
// back up to head of path
while (tok1 && tok1->previous() && tok1->previous()->str() == "::" &&
tok1->tokAt(-2) && tok1->tokAt(-2)->isName()) {
path = tok1->str() + " :: " + path;
tok1 = tok1->tokAt(-2);
count++;
path_length++;
}
if (tok1 && count) {
path = tok1->str() + " :: " + path;
path_length++;
}
std::list<Scope>::iterator it1;
// search for match
for (it1 = scopeList.begin(); it1 != scopeList.end(); ++it1) {
Scope *scope1 = &(*it1);
bool match = false;
if (scope1->className == tok1->str() && (scope1->type != Scope::eFunction)) {
// do the scopes match (same scope) or do their names match (multiple namespaces)
if ((*scope == scope1->nestedIn) || (*scope &&
(*scope)->className == scope1->nestedIn->className &&
!(*scope)->className.empty() &&
(*scope)->type == scope1->nestedIn->type)) {
// nested scopes => check that they match
{
const Scope *s1 = *scope;
const Scope *s2 = scope1->nestedIn;
while (s1 && s2) {
if (s1->className != s2->className)
break;
s1 = s1->nestedIn;
s2 = s2->nestedIn;
}
// Not matching scopes
if (s1 || s2)
continue;
}
Scope *scope2 = scope1;
while (scope2 && count > 0) {
count--;
tok1 = tok1->tokAt(2);
scope2 = scope2->findInNestedList(tok1->str());
}
if (count == 0 && scope2) {
match = true;
scope1 = scope2;
}
}
}
if (match) {
std::list<Function>::iterator func;
for (func = scope1->functionList.begin(); func != scope1->functionList.end(); ++func) {
if (!func->hasBody && func->tokenDef->str() == (*tok)->str()) {
if (Function::argsMatch(scope1, func->argDef, (*tok)->next(), path, path_length)) {
if (func->type == Function::eDestructor && destructor) {
func->hasBody = true;
} else if (func->type != Function::eDestructor && !destructor) {
// normal function?
if (!func->retFuncPtr && (*tok)->next()->link()) {
if ((func->isConst && (*tok)->next()->link()->next()->str() == "const") ||
(!func->isConst && (*tok)->next()->link()->next()->str() != "const")) {
func->hasBody = true;
}
}
// function returning function pointer?
else if (func->retFuncPtr) {
// todo check for const
func->hasBody = true;
}
}
if (func->hasBody) {
func->token = *tok;
func->arg = argStart;
addNewFunction(scope, tok);
if (*scope) {
(*scope)->functionOf = scope1;
(*scope)->function = &*func;
(*scope)->function->functionScope = *scope;
}
return;
}
}
}
}
}
}
// class function of unknown class
addNewFunction(scope, tok);
}
void SymbolDatabase::addNewFunction(Scope **scope, const Token **tok)
{
const Token *tok1 = *tok;
scopeList.push_back(Scope(this, tok1, *scope));
Scope *new_scope = &scopeList.back();
// skip to start of function
bool foundInitLit = false;
while (tok1 && (tok1->str() != "{" || (foundInitLit && tok1->previous()->isName()))) {
if (tok1->str() == "(" || tok1->str() == "{")
tok1 = tok1->link();
if (tok1->str() == ":")
foundInitLit = true;
tok1 = tok1->next();
}
if (tok1) {
new_scope->classStart = tok1;
new_scope->classEnd = tok1->link();
// syntax error?
if (!new_scope->classEnd) {
scopeList.pop_back();
while (tok1->next())
tok1 = tok1->next();
*scope = nullptr;
*tok = tok1;
return;
}
(*scope)->nestedList.push_back(new_scope);
*scope = new_scope;
*tok = tok1;
} else {
scopeList.pop_back();
*scope = nullptr;
*tok = nullptr;
}
}
const Token *Type::initBaseInfo(const Token *tok, const Token *tok1)
{
// goto initial '{'
const Token *tok2 = tok1;
while (tok2 && tok2->str() != "{") {
// skip unsupported templates
if (tok2->str() == "<")
tok2 = tok2->link();
// check for base classes
else if (Token::Match(tok2, ":|,")) {
Type::BaseInfo base;
base.isVirtual = false;
tok2 = tok2->next();
// check for invalid code
if (!tok2 || !tok2->next())
return nullptr;
if (tok2->str() == "virtual") {
base.isVirtual = true;
tok2 = tok2->next();
}
if (tok2->str() == "public") {
base.access = Public;
tok2 = tok2->next();
} else if (tok2->str() == "protected") {
base.access = Protected;
tok2 = tok2->next();
} else if (tok2->str() == "private") {
base.access = Private;
tok2 = tok2->next();
} else {
if (tok->str() == "class")
base.access = Private;
else if (tok->str() == "struct")
base.access = Public;
}
if (tok2->str() == "virtual") {
base.isVirtual = true;
tok2 = tok2->next();
}
base.nameTok = tok2;
// handle global namespace
if (tok2->str() == "::") {
tok2 = tok2->next();
}
// handle derived base classes
while (Token::Match(tok2, "%var% ::")) {
tok2 = tok2->tokAt(2);
}
base.name = tok2->str();
base.type = nullptr;
// add unhandled templates
if (tok2->next() && tok2->next()->str() == "<") {
tok2 = tok2->next();
base.name += tok2->str();
int level1 = 1;
while (tok2->next()) {
base.name += tok2->next()->str();
if (tok2->next()->str() == ">") {
level1--;
if (level1 == 0)
break;
} else if (tok2->next()->str() == "<")
level1++;
tok2 = tok2->next();
}
}
// save pattern for base class name
derivedFrom.push_back(base);
}
if (tok2) // see #4806
tok2 = tok2->next();
}
return tok2;
}
void SymbolDatabase::debugMessage(const Token *tok, const std::string &msg) const
{
if (tok && _settings->debugwarnings) {
const std::list<const Token*> locationList(1, tok);
const ErrorLogger::ErrorMessage errmsg(locationList, &_tokenizer->list,
Severity::debug,
"debug",
msg,
false);
if (_errorLogger)
_errorLogger->reportErr(errmsg);
}
}
const Function* Type::getFunction(const std::string& funcName) const
{
if (classScope) {
for (std::list<Function>::const_iterator i = classScope->functionList.begin(); i != classScope->functionList.end(); ++i)
if (i->name() == funcName)
return &*i;
}
for (std::size_t i = 0; i < derivedFrom.size(); i++) {
if (derivedFrom[i].type) {
const Function* func = derivedFrom[i].type->getFunction(funcName);
if (func)
return func;
}
}
return 0;
}
bool Type::hasCircularDependencies(std::set<BaseInfo>* anchestors) const
{
std::set<BaseInfo> knownAnchestors;
if (!anchestors) {
anchestors=&knownAnchestors;
}
for (std::vector<BaseInfo>::const_iterator parent=derivedFrom.begin(); parent!=derivedFrom.end(); ++parent) {
if (!parent->type)
continue;
else if (this==parent->type)
return true;
else if (anchestors->find(*parent)!=anchestors->end())
return true;
else {
anchestors->insert(*parent);
if (parent->type->hasCircularDependencies(anchestors))
return true;
}
}
return false;
}
bool Variable::arrayDimensions(std::vector<Dimension> &dimensions, const Token *tok)
{
bool isArray = false;
const Token *dim = tok;
while (dim && dim->next() && dim->str() == "[") {
Dimension dimension;
// check for empty array dimension []
if (dim->next()->str() != "]") {
dimension.start = dim->next();
dimension.end = dim->link()->previous();
if (dimension.start == dimension.end && dimension.start->isNumber())
dimension.num = MathLib::toLongNumber(dimension.start->str());
}
dimensions.push_back(dimension);
dim = dim->link()->next();
isArray = true;
}
return isArray;
}
static std::ostream & operator << (std::ostream & s, Scope::ScopeType type)
{
s << (type == Scope::eGlobal ? "Global" :
type == Scope::eClass ? "Class" :
type == Scope::eStruct ? "Struct" :
type == Scope::eUnion ? "Union" :
type == Scope::eNamespace ? "Namespace" :
type == Scope::eFunction ? "Function" :
type == Scope::eIf ? "If" :
type == Scope::eElse ? "Else" :
type == Scope::eElseIf ? "ElseIf" :
type == Scope::eFor ? "For" :
type == Scope::eWhile ? "While" :
type == Scope::eDo ? "Do" :
type == Scope::eSwitch ? "Switch" :
type == Scope::eTry ? "Try" :
type == Scope::eCatch ? "Catch" :
type == Scope::eUnconditional ? "Unconditional" :
"Unknown");
return s;
}
void SymbolDatabase::printVariable(const Variable *var, const char *indent) const
{
std::cout << indent << "_name: " << var->nameToken();
if (var->nameToken()) {
std::cout << " " << var->name() << " " << _tokenizer->list.fileLine(var->nameToken()) << std::endl;
std::cout << indent << " declarationId: " << var->declarationId() << std::endl;
} else
std::cout << std::endl;
std::cout << indent << "_start: " << var->typeStartToken() << " " << var->typeStartToken()->str()
<< " " << _tokenizer->list.fileLine(var->typeStartToken()) << std::endl;
std::cout << indent << "_end: " << var->typeEndToken() << " " << var->typeEndToken()->str()
<< " " << _tokenizer->list.fileLine(var->typeEndToken()) << std::endl;
std::cout << indent << "_index: " << var->index() << std::endl;
std::cout << indent << "_access: " <<
(var->isPublic() ? "Public" :
var->isProtected() ? "Protected" :
var->isPrivate() ? "Private" :
var->isGlobal() ? "Global" :
var->isNamespace() ? "Namespace" :
var->isArgument() ? "Argument" :
var->isLocal() ? "Local" :
var->isThrow() ? "Throw" :
"???") << std::endl;
std::cout << indent << "_flags: " << std::endl;
std::cout << indent << " isMutable: " << (var->isMutable() ? "true" : "false") << std::endl;
std::cout << indent << " isStatic: " << (var->isStatic() ? "true" : "false") << std::endl;
std::cout << indent << " isExtern: " << (var->isExtern() ? "true" : "false") << std::endl;
std::cout << indent << " isLocal: " << (var->isLocal() ? "true" : "false") << std::endl;
std::cout << indent << " isConst: " << (var->isConst() ? "true" : "false") << std::endl;
std::cout << indent << " isClass: " << (var->isClass() ? "true" : "false") << std::endl;
std::cout << indent << " isArray: " << (var->isArray() ? "true" : "false") << std::endl;
std::cout << indent << " isPointer: " << (var->isPointer() ? "true" : "false") << std::endl;
std::cout << indent << " isReference: " << (var->isReference() ? "true" : "false") << std::endl;
std::cout << indent << " isRValueRef: " << (var->isRValueReference() ? "true" : "false") << std::endl;
std::cout << indent << " hasDefault: " << (var->hasDefault() ? "true" : "false") << std::endl;
std::cout << indent << "_type: ";
if (var->type()) {
std::cout << var->type()->name();
if (var->typeScope())
std::cout << " " << var->typeScope()->type;
std::cout << " " << _tokenizer->list.fileLine(var->type()->classDef) << std::endl;
} else
std::cout << "none" << std::endl;
std::cout << indent << "_scope: ";
if (var->scope()) {
std::cout << var->scope()->className << " " << var->scope()->type;
if (var->scope()->classDef)
std::cout << " " << _tokenizer->list.fileLine(var->scope()->classDef) << std::endl;
else
std::cout << std::endl;
} else
std::cout << "none" << std::endl;
std::cout << indent << "_dimensions:";
for (std::size_t i = 0; i < var->dimensions().size(); i++) {
std::cout << " " << var->dimension(i);
if (!var->dimensions()[i].known)
std::cout << "?";
}
std::cout << std::endl;
}
void SymbolDatabase::printOut(const char *title) const
{
if (title)
std::cout << "\n### " << title << " ###\n";
for (std::list<Scope>::const_iterator scope = scopeList.begin(); scope != scopeList.end(); ++scope) {
std::cout << "Scope: " << &*scope << std::endl;
std::cout << " type: " << scope->type << std::endl;
std::cout << " className: " << scope->className << std::endl;
std::cout << " classDef: " << scope->classDef;
if (scope->classDef)
std::cout << " " << scope->classDef->str() << " " << _tokenizer->list.fileLine(scope->classDef) << std::endl;
else
std::cout << std::endl;
std::cout << " classStart: " << scope->classStart;
if (scope->classStart)
std::cout << " " << scope->classStart->str() << " " << _tokenizer->list.fileLine(scope->classStart) << std::endl;
else
std::cout << std::endl;
std::cout << " classEnd: " << scope->classEnd;
if (scope->classEnd)
std::cout << " " << scope->classEnd->str() << " " << _tokenizer->list.fileLine(scope->classEnd) << std::endl;
else
std::cout << std::endl;
std::list<Function>::const_iterator func;
// find the function body if not implemented inline
for (func = scope->functionList.begin(); func != scope->functionList.end(); ++func) {
std::cout << " Function: " << &*func << std::endl;
std::cout << " name: " << func->tokenDef->str() << " "
<< _tokenizer->list.fileLine(func->tokenDef) << std::endl;
std::cout << " type: " << (func->type == Function::eConstructor? "Constructor" :
func->type == Function::eCopyConstructor ? "CopyConstructor" :
func->type == Function::eMoveConstructor ? "MoveConstructor" :
func->type == Function::eOperatorEqual ? "OperatorEqual" :
func->type == Function::eDestructor ? "Destructor" :
func->type == Function::eFunction ? "Function" :
"???") << std::endl;
std::cout << " access: " << (func->access == Public ? "Public" :
func->access == Protected ? "Protected" :
func->access == Private ? "Private" :
"???") << std::endl;
std::cout << " hasBody: " << (func->hasBody ? "true" : "false") << std::endl;
std::cout << " isInline: " << (func->isInline ? "true" : "false") << std::endl;
std::cout << " isConst: " << (func->isConst ? "true" : "false") << std::endl;
std::cout << " isVirtual: " << (func->isVirtual ? "true" : "false") << std::endl;
std::cout << " isPure: " << (func->isPure ? "true" : "false") << std::endl;
std::cout << " isStatic: " << (func->isStatic ? "true" : "false") << std::endl;
std::cout << " isFriend: " << (func->isFriend ? "true" : "false") << std::endl;
std::cout << " isExplicit: " << (func->isExplicit ? "true" : "false") << std::endl;
std::cout << " isDefault: " << (func->isDefault ? "true" : "false") << std::endl;
std::cout << " isDelete: " << (func->isDelete ? "true" : "false") << std::endl;
std::cout << " isOperator: " << (func->isOperator ? "true" : "false") << std::endl;
std::cout << " retFuncPtr: " << (func->retFuncPtr ? "true" : "false") << std::endl;
std::cout << " tokenDef: " << func->tokenDef->str() << " " <<_tokenizer->list.fileLine(func->tokenDef) << std::endl;
std::cout << " argDef: " << _tokenizer->list.fileLine(func->argDef) << std::endl;
if (!func->isConstructor() && !func->isDestructor())
std::cout << " retDef: " << func->retDef->str() << " " <<_tokenizer->list.fileLine(func->retDef) << std::endl;
std::cout << " retType: " << func->retType << std::endl;
if (func->hasBody) {
std::cout << " token: " << _tokenizer->list.fileLine(func->token) << std::endl;
std::cout << " arg: " << _tokenizer->list.fileLine(func->arg) << std::endl;
}
std::cout << " nestedIn: ";
if (func->nestedIn) {
std::cout << func->nestedIn->className << " " << func->nestedIn->type;
if (func->nestedIn->classDef)
std::cout << " " << _tokenizer->list.fileLine(func->nestedIn->classDef) << std::endl;
else
std::cout << std::endl;
} else
std::cout << "Unknown" << std::endl;
std::cout << " functionScope: ";
if (func->functionScope) {
std::cout << func->functionScope->className << " "
<< _tokenizer->list.fileLine(func->functionScope->classDef) << std::endl;
} else
std::cout << "Unknown" << std::endl;
std::list<Variable>::const_iterator var;
for (var = func->argumentList.begin(); var != func->argumentList.end(); ++var) {
std::cout << " Variable: " << &*var << std::endl;
printVariable(&*var, " ");
}
}
std::list<Variable>::const_iterator var;
for (var = scope->varlist.begin(); var != scope->varlist.end(); ++var) {
std::cout << " Variable: " << &*var << std::endl;
printVariable(&*var, " ");
}
std::cout << " nestedIn: " << scope->nestedIn;
if (scope->nestedIn) {
std::cout << " " << scope->nestedIn->type << " "
<< scope->nestedIn->className;
}
std::cout << std::endl;
std::cout << " definedType: " << scope->definedType << std::endl;
std::cout << " nestedList[" << scope->nestedList.size() << "] = (";
std::list<Scope *>::const_iterator nsi;
std::size_t count = scope->nestedList.size();
for (nsi = scope->nestedList.begin(); nsi != scope->nestedList.end(); ++nsi) {
std::cout << " " << (*nsi) << " " << (*nsi)->type << " " << (*nsi)->className;
if (count-- > 1)
std::cout << ",";
}
std::cout << " )" << std::endl;
std::list<Scope::UsingInfo>::const_iterator use;
for (use = scope->usingList.begin(); use != scope->usingList.end(); ++use) {
std::cout << " using: " << use->scope << " " << use->start->strAt(2);
const Token *tok1 = use->start->tokAt(3);
while (tok1 && tok1->str() == "::") {
std::cout << "::" << tok1->strAt(1);
tok1 = tok1->tokAt(2);
}
std::cout << " " << _tokenizer->list.fileLine(use->start) << std::endl;
}
std::cout << " functionOf: " << scope->functionOf;
if (scope->functionOf) {
std::cout << " " << scope->functionOf->type << " " << scope->functionOf->className;
if (scope->functionOf->classDef)
std::cout << " " << _tokenizer->list.fileLine(scope->functionOf->classDef);
}
std::cout << std::endl;
std::cout << " function: " << scope->function;
if (scope->function) {
std::cout << " " << scope->function->tokenDef->str() << " "
<< _tokenizer->list.fileLine(scope->function->tokenDef);
}
std::cout << std::endl;
}
for (std::list<Type>::const_iterator type = typeList.begin(); type != typeList.end(); ++type) {
std::cout << "Type: " << &(*type) << std::endl;
std::cout << " name: " << type->name() << std::endl;
std::cout << " classDef: " << _tokenizer->list.fileLine(type->classDef) << std::endl;
std::cout << " classScope: " << type->classScope << std::endl;
std::cout << " enclosingScope: " << type->enclosingScope << std::endl;
std::cout << " needInitialization: " << (type->needInitialization == Type::Unknown ? "Unknown" :
type->needInitialization == Type::True ? "True" :
type->needInitialization == Type::False ? "False" :
"Invalid") << std::endl;
std::cout << " derivedFrom[" << type->derivedFrom.size() << "] = (";
std::size_t count = type->derivedFrom.size();
for (std::size_t i = 0; i < type->derivedFrom.size(); ++i) {
if (type->derivedFrom[i].isVirtual)
std::cout << "Virtual ";
std::cout << (type->derivedFrom[i].access == Public ? " Public" :
type->derivedFrom[i].access == Protected ? " Protected" :
type->derivedFrom[i].access == Private ? " Private" :
" Unknown");
if (type->derivedFrom[i].type)
std::cout << " " << type->derivedFrom[i].type;
else
std::cout << " Unknown";
std::cout << " " << type->derivedFrom[i].name;
if (count-- > 1)
std::cout << ",";
}
std::cout << " )" << std::endl;
std::cout << " friendList[" << type->friendList.size() << "] = (";
std::list<Type::FriendInfo>::const_iterator fii;
count = type->friendList.size();
for (fii = type->friendList.begin(); fii != type->friendList.end(); ++fii) {
if (fii->type)
std::cout << fii->type;
else
std::cout << " Unknown";
std::cout << " " << fii->name;
if (count-- > 1)
std::cout << ",";
}
std::cout << " )" << std::endl;
}
for (std::size_t i = 1; i < _variableList.size(); i++) {
std::cout << "_variableList[" << i << "]: " << _variableList[i];
if (_variableList[i]) {
std::cout << " " << _variableList[i]->name() << " "
<< _tokenizer->list.fileLine(_variableList[i]->nameToken());
}
std::cout << std::endl;
}
}
//---------------------------------------------------------------------------
void Function::addArguments(const SymbolDatabase *symbolDatabase, const Scope *scope)
{
// check for non-empty argument list "( ... )"
const Token * start = arg ? arg : argDef;
if (start && start->link() != start->next() && !Token::simpleMatch(start, "( void )")) {
unsigned int count = 0;
for (const Token* tok = start->next(); tok; tok = tok->next()) {
const Token* startTok = tok;
const Token* endTok = nullptr;
const Token* nameTok = nullptr;
if (tok->str() == "," || tok->str() == ")")
return; // Syntax error
do {
if (tok->varId() != 0) {
nameTok = tok;
endTok = tok->previous();
} else if (tok->str() == "[") {
// skip array dimension(s)
tok = tok->link();
while (tok->next()->str() == "[")
tok = tok->next()->link();
} else if (tok->str() == "<") {
tok = tok->link();
if (!tok) // something is wrong so just bail out
return;
}
tok = tok->next();
if (!tok) // something is wrong so just bail
return;
} while (tok->str() != "," && tok->str() != ")" && tok->str() != "=");
const Token *typeTok = startTok->tokAt(startTok->str() == "const" ? 1 : 0);
if (typeTok->str() == "struct")
typeTok = typeTok->next();
// check for argument with no name or missing varid
if (!endTok) {
if (tok->previous()->isName()) {
if (tok->previous() != typeTok) {
nameTok = tok->previous();
endTok = nameTok->previous();
if (hasBody)
symbolDatabase->debugMessage(nameTok, "Function::addArguments found argument \'" + nameTok->str() + "\' with varid 0.");
} else
endTok = startTok;
} else
endTok = tok->previous();
}
const ::Type *argType = nullptr;
if (!typeTok->isStandardType()) {
argType = symbolDatabase->findVariableType(scope, typeTok);
if (!argType) {
// look for variable type in any using namespace in this scope or above
const Scope *parent = scope;
while (parent) {
for (std::list<Scope::UsingInfo>::const_iterator ui = scope->usingList.begin();
ui != scope->usingList.end(); ++ui) {
if (ui->scope) {
argType = symbolDatabase->findVariableType(ui->scope, typeTok);
if (argType)
break;
}
}
parent = parent->nestedIn;
}
}
}
// skip default values
if (tok->str() == "=") {
while (tok->str() != "," && tok->str() != ")") {
if (tok->link() && Token::Match(tok, "[{[(<]"))
tok = tok->link();
tok = tok->next();
}
}
argumentList.push_back(Variable(nameTok, startTok, endTok, count++, Argument, argType, functionScope));
if (tok->str() == ")")
break;
}
// count default arguments
for (const Token* tok = argDef->next(); tok && tok != argDef->link(); tok = tok->next()) {
if (tok->str() == "=")
initArgCount++;
}
}
}
bool Function::isImplicitlyVirtual(bool defaultVal) const
{
if (isVirtual)
return true;
else if (access == Private || access == Public || access == Protected) {
bool safe = true;
bool hasVirt = isImplicitlyVirtual_rec(nestedIn->definedType, safe);
if (hasVirt)
return true;
else if (safe)
return false;
else
return defaultVal;
} else
return false;
}
bool Function::isImplicitlyVirtual_rec(const ::Type* baseType, bool& safe) const
{
// check each base class
for (std::size_t i = 0; i < baseType->derivedFrom.size(); ++i) {
// check if base class exists in database
if (baseType->derivedFrom[i].type && baseType->derivedFrom[i].type->classScope) {
const Scope *parent = baseType->derivedFrom[i].type->classScope;
std::list<Function>::const_iterator func;
// check if function defined in base class
for (func = parent->functionList.begin(); func != parent->functionList.end(); ++func) {
if (func->isVirtual && func->tokenDef->str() == tokenDef->str()) { // Base is virtual and of same name
const Token *temp1 = func->tokenDef->previous();
const Token *temp2 = tokenDef->previous();
bool returnMatch = true;
// check for matching return parameters
while (temp1->str() != "virtual") {
if (temp1->str() != temp2->str()) {
returnMatch = false;
break;
}
temp1 = temp1->previous();
temp2 = temp2->previous();
}
// check for matching function parameters
if (returnMatch && argsMatch(baseType->classScope, func->argDef, argDef, "", 0)) {
return true;
}
}
}
if (!baseType->derivedFrom[i].type->derivedFrom.empty() && !baseType->derivedFrom[i].type->hasCircularDependencies()) {
// avoid endless recursion, see #5289 Crash: Stack overflow in isImplicitlyVirtual_rec when checking SVN and
// #5590 with a loop within the class hierarchie.
if (isImplicitlyVirtual_rec(baseType->derivedFrom[i].type, safe)) {
return true;
}
}
} else {
// unable to find base class so assume it has no virtual function
safe = false;
return false;
}
}
return false;
}
const Variable* Function::getArgumentVar(std::size_t num) const
{
for (std::list<Variable>::const_iterator i = argumentList.begin(); i != argumentList.end(); ++i) {
if (i->index() == num)
return (&*i);
else if (i->index() > num)
return 0;
}
return 0;
}
//---------------------------------------------------------------------------
Scope::Scope(const SymbolDatabase *check_, const Token *classDef_, const Scope *nestedIn_, ScopeType type_, const Token *start_) :
check(check_),
classDef(classDef_),
classStart(start_),
classEnd(start_->link()),
nestedIn(nestedIn_),
numConstructors(0),
numCopyOrMoveConstructors(0),
type(type_),
definedType(nullptr),
functionOf(nullptr),
function(nullptr)
{
}
Scope::Scope(const SymbolDatabase *check_, const Token *classDef_, const Scope *nestedIn_) :
check(check_),
classDef(classDef_),
classStart(nullptr),
classEnd(nullptr),
nestedIn(nestedIn_),
numConstructors(0),
numCopyOrMoveConstructors(0),
definedType(nullptr),
functionOf(nullptr),
function(nullptr)
{
const Token *nameTok = classDef;
if (!classDef) {
type = Scope::eGlobal;
} else if (classDef->str() == "class") {
type = Scope::eClass;
nameTok = nameTok->next();
} else if (classDef->str() == "struct") {
type = Scope::eStruct;
nameTok = nameTok->next();
} else if (classDef->str() == "union") {
type = Scope::eUnion;
nameTok = nameTok->next();
} else if (classDef->str() == "namespace") {
type = Scope::eNamespace;
nameTok = nameTok->next();
} else {
type = Scope::eFunction;
}
// skip over qualification if present
if (nameTok && nameTok->str() == "::")
nameTok = nameTok->next();
while (nameTok && Token::Match(nameTok, "%type% ::"))
nameTok = nameTok->tokAt(2);
if (nameTok && nameTok->str() != "{") // anonymous and unnamed structs/unions don't have a name
className = nameTok->str();
}
bool Scope::hasDefaultConstructor() const
{
if (numConstructors) {
std::list<Function>::const_iterator func;
for (func = functionList.begin(); func != functionList.end(); ++func) {
if (func->type == Function::eConstructor && func->argCount() == 0)
return true;
}
}
return false;
}
AccessControl Scope::defaultAccess() const
{
switch (type) {
case eGlobal:
return Global;
case eClass:
return Private;
case eStruct:
return Public;
case eUnion:
return Public;
case eNamespace:
return Namespace;
default:
return Local;
}
}
// Get variable list..
void Scope::getVariableList()
{
AccessControl varaccess = defaultAccess();
const Token *start;
unsigned int level = 1;
if (classStart)
start = classStart->next();
// global scope
else if (className.empty())
start = check->_tokenizer->tokens();
// forward declaration
else
return;
for (const Token *tok = start; tok; tok = tok->next()) {
// end of scope?
if (tok->str() == "}") {
level--;
if (level == 0)
break;
}
// syntax error?
else if (tok->next() == nullptr)
break;
// Is it a function?
else if (tok->str() == "{") {
tok = tok->link();
// syntax error?
if (!tok)
return;
continue;
}
// Is it a nested class or structure?
else if (Token::Match(tok, "class|struct|union|namespace %type% :|{")) {
tok = tok->tokAt(2);
while (tok && tok->str() != "{")
tok = tok->next();
if (tok) {
// skip implementation
tok = tok->link();
continue;
} else
break;
} else if (Token::Match(tok, "struct|union {") && Token::Match(tok->next()->link(), "} %var% ;|[")) {
tok = tok->next()->link()->tokAt(2);
continue;
} else if (Token::Match(tok, "struct|union {") && Token::simpleMatch(tok->next()->link(), "} ;")) {
level++;
tok = tok->next();
continue;
}
// Borland C++: Skip all variables in the __published section.
// These are automatically initialized.
else if (tok->str() == "__published:") {
for (; tok; tok = tok->next()) {
if (tok->str() == "{")
tok = tok->link();
if (Token::Match(tok->next(), "private:|protected:|public:"))
break;
}
if (tok)
continue;
else
break;
}
// "private:" "public:" "protected:" etc
else if (tok->str() == "public:") {
varaccess = Public;
continue;
} else if (tok->str() == "protected:") {
varaccess = Protected;
continue;
} else if (tok->str() == "private:") {
varaccess = Private;
continue;
}
// Is it a forward declaration?
else if (Token::Match(tok, "class|struct|union %var% ;")) {
tok = tok->tokAt(2);
continue;
}
// Borland C++: Ignore properties..
else if (tok->str() == "__property")
continue;
// skip return and delete
else if (Token::Match(tok, "return|delete")) {
while (tok->next() &&
tok->next()->str() != ";" &&
tok->next()->str() != "}" /* ticket #4994 */) {
tok = tok->next();
}
continue;
}
// Search for start of statement..
else if (tok->previous() && !Token::Match(tok->previous(), ";|{|}|public:|protected:|private:"))
continue;
else if (Token::Match(tok, ";|{|}"))
continue;
else if (Token::Match(tok, "goto %var% ;")) {
tok = tok->tokAt(2);
continue;
}
tok = checkVariable(tok, varaccess);
if (!tok)
break;
}
}
const Token *Scope::checkVariable(const Token *tok, AccessControl varaccess)
{
// This is the start of a statement
const Token *vartok = nullptr;
const Token *typetok = nullptr;
// Is it a throw..?
if (Token::Match(tok, "throw %any% (") &&
Token::simpleMatch(tok->linkAt(2), ") ;")) {
return tok->linkAt(2);
} else if ((Token::Match(tok, "throw %any% :: %any% (") &&
Token::simpleMatch(tok->linkAt(4), ") ;"))) {
return tok->linkAt(4);
}
// friend?
if (Token::Match(tok, "friend %type%") && tok->next()->varId() == 0) {
const Token *next = Token::findmatch(tok->tokAt(2), ";|{");
if (next && next->str() == "{")
next = next->link();
return next;
}
// skip const|static|mutable|extern
while (Token::Match(tok, "const|static|mutable|extern")) {
tok = tok->next();
}
// the start of the type tokens does not include the above modifiers
const Token *typestart = tok;
if (Token::Match(tok, "struct|union")) {
tok = tok->next();
}
if (tok && isVariableDeclaration(tok, vartok, typetok)) {
// If the vartok was set in the if-blocks above, create a entry for this variable..
tok = vartok->next();
while (tok && tok->str() == "[")
tok = tok->link()->next();
if (vartok->varId() == 0) {
if (!vartok->isBoolean())
check->debugMessage(vartok, "Scope::checkVariable found variable \'" + vartok->str() + "\' with varid 0.");
return tok;
}
const Type *vType = nullptr;
if (typetok) {
vType = check->findVariableType(this, typetok);
if (!vType) {
// look for variable type in any using namespace in this scope or above
const Scope *parent = this;
while (parent) {
for (std::list<Scope::UsingInfo>::const_iterator ui = parent->usingList.begin();
ui != parent->usingList.end(); ++ui) {
if (ui->scope) {
vType = check->findVariableType(ui->scope, typetok);
if (vType)
break;
}
}
parent = parent->nestedIn;
}
}
}
addVariable(vartok, typestart, vartok->previous(), varaccess, vType, this);
}
return tok;
}
const Variable *Scope::getVariable(const std::string &varname) const
{
std::list<Variable>::const_iterator iter;
for (iter = varlist.begin(); iter != varlist.end(); ++iter) {
if (iter->name() == varname)
return &*iter;
}
return nullptr;
}
static const Token* skipScopeIdentifiers(const Token* tok)
{
if (tok && tok->str() == "::") {
tok = tok->next();
}
while (Token::Match(tok, "%type% ::")) {
tok = tok->tokAt(2);
}
return tok;
}
static const Token* skipPointers(const Token* tok)
{
while (Token::Match(tok, "*|&|&&") || (tok && tok->str() == "(" && Token::Match(tok->link()->next(), "(|["))) {
tok = tok->next();
}
return tok;
}
bool Scope::isVariableDeclaration(const Token* tok, const Token*& vartok, const Token*& typetok) const
{
if (tok && tok->str() == "throw" && check->_tokenizer->isCPP())
return false;
const Token* localTypeTok = skipScopeIdentifiers(tok);
const Token* localVarTok = nullptr;
if (Token::Match(localTypeTok, "%type% <")) {
const Token* closeTok = localTypeTok->next()->link();
if (closeTok) {
localVarTok = skipPointers(closeTok->next());
if (Token::Match(localVarTok, ":: %type% %var% ;|=|(")) {
if (localVarTok->strAt(3) != "(" ||
Token::simpleMatch(localVarTok->linkAt(3), ") ;")) {
localTypeTok = localVarTok->next();
localVarTok = localVarTok->tokAt(2);
}
}
}
} else if (Token::Match(localTypeTok, "%type%")) {
localVarTok = skipPointers(localTypeTok->strAt(1)=="const"?localTypeTok->tokAt(2):localTypeTok->next());
}
if (localVarTok && localVarTok->str() == "const")
localVarTok = localVarTok->next();
if (Token::Match(localVarTok, "%var% ;|=")) {
vartok = localVarTok;
typetok = localTypeTok;
} else if (Token::Match(localVarTok, "%var% )|[") && localVarTok->str() != "operator") {
vartok = localVarTok;
typetok = localTypeTok;
} else if ((isLocal() || type == Scope::eFunction) &&
Token::Match(localVarTok, "%var% (") &&
Token::simpleMatch(localVarTok->next()->link(), ") ;")) {
vartok = localVarTok;
typetok = localTypeTok;
} else if (type == eCatch &&
Token::Match(localVarTok, "%var% )")) {
vartok = localVarTok;
typetok = localTypeTok;
}
return nullptr != vartok;
}
//---------------------------------------------------------------------------
const Type* SymbolDatabase::findVariableType(const Scope *start, const Token *typeTok) const
{
std::list<Type>::const_iterator type;
for (type = typeList.begin(); type != typeList.end(); ++type) {
// do the names match?
if (type->name() == typeTok->str()) {
// check if type does not have a namespace
if (typeTok->strAt(-1) != "::") {
const Scope *parent = start;
// check if in same namespace
while (parent) {
// out of line class function belongs to class
if (parent->type == Scope::eFunction && parent->functionOf)
parent = parent->functionOf;
else if (parent != type->enclosingScope)
parent = parent->nestedIn;
else
break;
}
if (type->enclosingScope == parent)
return &(*type);
}
// type has a namespace
else {
// FIXME check if namespace path matches supplied path
return &(*type);
}
}
}
return nullptr;
}
//---------------------------------------------------------------------------
/** @todo This function only counts the number of arguments in the function call.
It does not take into account function constantness.
It does not take into account argument types. This can be difficult because of promotion and conversion operators and casts and because the argument can also be a function call.
*/
const Function* Scope::findFunction(const Token *tok) const
{
for (std::list<Function>::const_iterator i = functionList.begin(); i != functionList.end(); ++i) {
if (i->tokenDef->str() == tok->str()) {
const Function *func = &*i;
if ((tok->strAt(1) == "(" || (func->name() == tok->str() && tok->strAt(1) == "{" && func->type == Function::eConstructor)) && tok->tokAt(2)) {
std::string end(tok->strAt(1) == "{" ? "}" : ")");
// check the arguments
unsigned int args = 0;
const Token *arg = tok->tokAt(2);
while (arg && arg->str() != end) {
/** @todo check argument type for match */
// mismatch parameter: passing parameter by address to function, argument is reference
if (arg->str() == "&") {
// check that function argument type is not mismatching
const Variable *funcarg = func->getArgumentVar(args);
if (funcarg && funcarg->isReference()) {
args = ~0U;
break;
}
}
args++;
arg = arg->nextArgument();
}
// check for argument count match or default arguments
if (args == func->argCount() ||
(args < func->argCount() && args >= func->minArgCount()))
return func;
}
}
}
// check in base classes
if (isClassOrStruct() && definedType && !definedType->derivedFrom.empty()) {
for (std::size_t i = 0; i < definedType->derivedFrom.size(); ++i) {
const Type *base = definedType->derivedFrom[i].type;
if (base && base->classScope) {
if (base->classScope == this) // Ticket #5120, #5125: Recursive class; tok should have been found already
continue;
const Function * func = base->classScope->findFunction(tok);
if (func)
return func;
}
}
}
return 0;
}
//---------------------------------------------------------------------------
const Function* SymbolDatabase::findFunction(const Token *tok) const
{
// find the scope this function is in
const Scope *currScope = tok->scope();
while (currScope && currScope->isExecutable()) {
if (currScope->functionOf)
currScope = currScope->functionOf;
else
currScope = currScope->nestedIn;
}
// check for a qualified name and use it when given
if (tok->strAt(-1) == "::") {
// find start of qualified function name
const Token *tok1 = tok;
while (Token::Match(tok1->tokAt(-2), "%type% ::"))
tok1 = tok1->tokAt(-2);
// check for global scope
if (tok1->strAt(-1) == "::") {
currScope = &scopeList.front();
currScope = currScope->findRecordInNestedList(tok1->str());
}
// find start of qualification
else {
while (currScope) {
if (currScope->className == tok1->str())
break;
else {
const Scope *scope = currScope->findRecordInNestedList(tok1->str());
if (scope) {
currScope = scope;
break;
} else
currScope = currScope->nestedIn;
}
}
}
if (currScope) {
while (currScope && !Token::Match(tok1, "%type% :: %any% (")) {
currScope = currScope->findRecordInNestedList(tok1->strAt(2));
tok1 = tok1->tokAt(2);
}
tok1 = tok1->tokAt(2);
if (currScope && tok1)
return currScope->findFunction(tok1);
}
}
// check for member function
else if (Token::Match(tok->tokAt(-2), "!!this .")) {
if (Token::Match(tok->tokAt(-2), "%var% .")) {
const Token *tok1 = tok->tokAt(-2);
if (tok1->varId()) {
const Variable *var = getVariableFromVarId(tok1->varId());
if (var && var->typeScope())
return var->typeScope()->findFunction(tok);
}
}
}
// check in enclosing scopes
else {
while (currScope) {
const Function *func = currScope->findFunction(tok);
if (func)
return func;
currScope = currScope->nestedIn;
}
}
return 0;
}
//---------------------------------------------------------------------------
const Scope *SymbolDatabase::findScopeByName(const std::string& name) const
{
for (std::list<Scope>::const_iterator it = scopeList.begin(); it != scopeList.end(); ++it) {
if (it->className == name)
return &*it;
}
return 0;
}
//---------------------------------------------------------------------------
Scope *Scope::findInNestedList(const std::string & name)
{
std::list<Scope *>::iterator it;
for (it = nestedList.begin(); it != nestedList.end(); ++it) {
if ((*it)->className == name)
return (*it);
}
return 0;
}
//---------------------------------------------------------------------------
const Scope *Scope::findRecordInNestedList(const std::string & name) const
{
std::list<Scope *>::const_iterator it;
for (it = nestedList.begin(); it != nestedList.end(); ++it) {
if ((*it)->className == name && (*it)->type != eFunction)
return (*it);
}
return 0;
}
//---------------------------------------------------------------------------
const Type* Scope::findType(const std::string & name) const
{
std::list<Type*>::const_iterator it;
for (it = definedTypes.begin(); it != definedTypes.end(); ++it) {
if ((*it)->name() == name)
return (*it);
}
return 0;
}
//---------------------------------------------------------------------------
Scope *Scope::findInNestedListRecursive(const std::string & name)
{
std::list<Scope *>::iterator it;
for (it = nestedList.begin(); it != nestedList.end(); ++it) {
if ((*it)->className == name)
return (*it);
}
for (it = nestedList.begin(); it != nestedList.end(); ++it) {
Scope *child = (*it)->findInNestedListRecursive(name);
if (child)
return child;
}
return 0;
}
//---------------------------------------------------------------------------
const Function *Scope::getDestructor() const
{
std::list<Function>::const_iterator it;
for (it = functionList.begin(); it != functionList.end(); ++it) {
if (it->type == Function::eDestructor)
return &(*it);
}
return 0;
}
//---------------------------------------------------------------------------
unsigned int Scope::getNestedNonFunctions() const
{
unsigned int nested = 0;
std::list<Scope *>::const_iterator ni;
for (ni = nestedList.begin(); ni != nestedList.end(); ++ni) {
if ((*ni)->type != Scope::eFunction)
nested++;
}
return nested;
}
//---------------------------------------------------------------------------
bool SymbolDatabase::isCPP() const
{
return _tokenizer->isCPP();
}
//---------------------------------------------------------------------------
const Scope *SymbolDatabase::findScope(const Token *tok, const Scope *startScope) const
{
const Scope *scope = nullptr;
// absolute path
if (tok->str() == "::") {
tok = tok->next();
scope = &scopeList.front();
}
// relative path
else if (tok->isName()) {
scope = startScope;
}
while (scope && tok && tok->isName()) {
if (tok->strAt(1) == "::") {
scope = scope->findRecordInNestedList(tok->str());
tok = tok->tokAt(2);
} else
return scope->findRecordInNestedList(tok->str());
}
// not a valid path
return 0;
}
//---------------------------------------------------------------------------
const Type* SymbolDatabase::findType(const Token *startTok, const Scope *startScope) const
{
// skip over struct or union
if (Token::Match(startTok, "struct|union"))
startTok = startTok->next();
// type same as scope
if (startTok->str() == startScope->className && startScope->isClassOrStruct())
return startScope->definedType;
// absolute path - directly start in global scope
if (startTok->str() == "::") {
startTok = startTok->next();
startScope = &scopeList.front();
}
const Token* tok = startTok;
const Scope* scope = startScope;
while (scope && tok && tok->isName()) {
if (tok->strAt(1) == "::") {
scope = scope->findRecordInNestedList(tok->str());
if (scope) {
tok = tok->tokAt(2);
} else {
startScope = startScope->nestedIn;
if (!startScope)
break;
scope = startScope;
tok = startTok;
}
} else
return scope->findType(tok->str());
}
// not a valid path
return 0;
}
//---------------------------------------------------------------------------
const Type* SymbolDatabase::findTypeInNested(const Token *startTok, const Scope *startScope) const
{
// skip over struct or union
if (Token::Match(startTok, "struct|union"))
startTok = startTok->next();
// type same as scope
if (startTok->str() == startScope->className && startScope->isClassOrStruct())
return startScope->definedType;
bool hasPath = false;
// absolute path - directly start in global scope
if (startTok->str() == "::") {
hasPath = true;
startTok = startTok->next();
startScope = &scopeList.front();
}
const Token* tok = startTok;
const Scope* scope = startScope;
while (scope && tok && tok->isName()) {
if (tok->strAt(1) == "::") {
hasPath = true;
scope = scope->findRecordInNestedList(tok->str());
if (scope) {
tok = tok->tokAt(2);
} else {
startScope = startScope->nestedIn;
if (!startScope)
break;
scope = startScope;
tok = startTok;
}
} else {
const Type * type = scope->findType(tok->str());
if (hasPath || type)
return type;
else {
scope = scope->nestedIn;
if (!scope)
break;
}
}
}
// not a valid path
return 0;
}
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