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symboldatabase.cpp
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symboldatabase.cpp
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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2013 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>
// Define ULLONG_MAX and LLONG_MAX for Borland
#ifdef __BORLANDC__
#define ULLONG_MAX ULONG_MAX
#define LLONG_MAX LONG_MAX
#endif
// Define ULLONG_MAX and LLONG_MAX for SunCC on non-Solaris systems
#if (defined(__SUNPRO_C) || defined(__SUNPRO_CC)) && \
!(defined (__sun) || defined (__sun__))
#define ULLONG_MAX ULONG_MAX
#define LLONG_MAX LONG_MAX
#endif
//---------------------------------------------------------------------------
SymbolDatabase::SymbolDatabase(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger)
: _tokenizer(tokenizer), _settings(settings), _errorLogger(errorLogger)
{
// create global scope
scopeList.push_back(Scope(this, NULL, NULL));
// 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->next()) {
// 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::Match(tok2->next(), "= {") &&
tok2->linkAt(2)->next()->str() == ";")
tok = tok2->linkAt(2)->next();
else if (Token::Match(tok2->next(), "(|{") &&
tok2->next()->link()->next()->str() == ";")
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) {
scopeList.pop_back();
break;
}
}
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;
}
}
// 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 = 0;
const Token *argStart = 0;
// 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 (tok->previous()->str() != "::" && isFunction(tok, scope, &funcStart, &argStart)) {
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();
}
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::Match(end, ") const| ;")) {
// find the function implementation later
tok = end->next();
if (tok->str() != ";")
tok = tok->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);
}
// inline function
else {
function.isInline = true;
function.hasBody = true;
// find start of function '{'
while (end && end->str() != "{")
end = end->next();
if (!end)
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 if (tok->previous()->str() == "::" && isFunction(tok, scope, &funcStart, &argStart)) {
/** @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 = 0;
const Token *argStart = 0;
// function?
if (isFunction(tok, scope, &funcStart, &argStart)) {
// has body?
if (Token::Match(argStart->link(), ") const| {|:")) {
Scope *old_scope = scope;
// class function
if (tok->previous() && tok->previous()->str() == "::")
addClassFunction(&scope, &tok, argStart);
// class destructor
else if (tok->previous() && tok->previous()->str() == "~" &&
tok->tokAt(-2) && tok->strAt(-2) == "::")
addClassFunction(&scope, &tok, argStart);
// regular function
else
addGlobalFunction(scope, tok, argStart, funcStart);
// syntax error
if (!scope) {
scope = old_scope;
break;
}
}
// function returning function pointer with body
else if (Token::simpleMatch(argStart->link(), ") ) (") &&
Token::Match(argStart->link()->linkAt(2), ") const| {")) {
tok = funcStart;
Scope *old_scope = scope;
// class function
if (tok->previous()->str() == "::")
addClassFunction(&scope, &tok, argStart);
// regular function
else {
Function* function = addGlobalFunction(scope, tok, argStart, funcStart);
function->retFuncPtr = true;
}
// syntax error?
if (!scope) {
scope = old_scope;
break;
}
}
// function prototype
else if (Token::simpleMatch(argStart->link(), ") ;")) {
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)
addGlobalFunctionDecl(scope, argStart, funcStart);
tok = argStart->link()->next();
continue;
}
// function returning function pointer prototype
else if (Token::simpleMatch(argStart->link(), ") ) (") &&
Token::simpleMatch(argStart->link()->linkAt(2), ") ;")) {
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, argStart, "", 0))
newFunc = false;
}
// save function prototype in database
if (newFunc) {
Function* func = addGlobalFunctionDecl(scope, argStart, funcStart);
func->retFuncPtr = true;
}
tok = argStart->link()->linkAt(2)->next();
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);
}
// 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->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*)NULL);
// 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>::const_iterator var;
for (var = scope->varlist.begin(); var != scope->varlist.end(); ++var) {
unsigned int varId = var->varId();
if (varId)
_variableList[varId] = &(*var);
}
// add all function parameters
std::list<Function>::const_iterator func;
for (func = scope->functionList.begin(); func != scope->functionList.end(); ++func) {
std::list<Variable>::const_iterator arg;
for (arg = func->argumentList.begin(); arg != func->argumentList.end(); ++arg) {
// check for named parameters
if (arg->nameToken() && arg->varId()) {
unsigned int varId = arg->varId();
if (varId)
_variableList[varId] = &(*arg);
}
}
}
}
// 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() == ".") {
const Token *tok1 = tok->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() == ")" &&
tok->link()->next() &&
tok->link()->next()->str() == "(" &&
tok->link()->next()->link()->next() &&
Token::Match(tok->link()->next()->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
(Token::Match(tok->next()->link(), ") const| ;|{|=") ||
Token::Match(tok->next()->link(), ") : ::| %var% (|::|<|{") ||
Token::Match(tok->next()->link(), ") = delete|default ;"))) {
*funcStart = tok;
*argStart = tok->next();
return true;
}
// template constructor?
else if (Token::Match(tok, "%var% <") && Token::simpleMatch(tok->next()->link(), "> (") &&
(Token::Match(tok->next()->link()->next()->link(), ") const| ;|{|=") ||
Token::Match(tok->next()->link()->next()->link(), ") : ::| %var% (|::|<|{"))) {
*funcStart = tok;
*argStart = tok->next()->link()->next();
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
}