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symboldatabase.cpp
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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2025 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 "astutils.h"
#include "errorlogger.h"
#include "errortypes.h"
#include "keywords.h"
#include "library.h"
#include "mathlib.h"
#include "path.h"
#include "platform.h"
#include "settings.h"
#include "standards.h"
#include "templatesimplifier.h"
#include "token.h"
#include "tokenize.h"
#include "tokenlist.h"
#include "utils.h"
#include "valueflow.h"
#include "vfvalue.h"
#include <algorithm>
#include <cassert>
#include <cstring>
#include <initializer_list>
#include <iomanip>
#include <iostream>
#include <iterator>
#include <sstream>
#include <stack>
#include <string>
#include <tuple>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>
//---------------------------------------------------------------------------
SymbolDatabase::SymbolDatabase(Tokenizer& tokenizer, const Settings& settings, ErrorLogger& errorLogger)
: mTokenizer(tokenizer), mSettings(settings), mErrorLogger(errorLogger)
{
if (!mTokenizer.tokens())
return;
if (mSettings.platform.defaultSign == 's' || mSettings.platform.defaultSign == 'S')
mDefaultSignedness = ValueType::SIGNED;
else if (mSettings.platform.defaultSign == 'u' || mSettings.platform.defaultSign == 'U')
mDefaultSignedness = ValueType::UNSIGNED;
else
mDefaultSignedness = ValueType::UNKNOWN_SIGN;
createSymbolDatabaseFindAllScopes();
createSymbolDatabaseClassInfo();
createSymbolDatabaseVariableInfo();
createSymbolDatabaseCopyAndMoveConstructors();
createSymbolDatabaseFunctionScopes();
createSymbolDatabaseClassAndStructScopes();
createSymbolDatabaseFunctionReturnTypes();
createSymbolDatabaseNeedInitialization();
createSymbolDatabaseVariableSymbolTable();
createSymbolDatabaseSetScopePointers();
createSymbolDatabaseSetVariablePointers();
createSymbolDatabaseSetTypePointers();
setValueTypeInTokenList(false);
createSymbolDatabaseSetFunctionPointers(true);
createSymbolDatabaseSetSmartPointerType();
setValueTypeInTokenList(false);
createSymbolDatabaseEnums();
createSymbolDatabaseEscapeFunctions();
createSymbolDatabaseIncompleteVars();
createSymbolDatabaseExprIds();
debugSymbolDatabase();
}
static const Token* skipScopeIdentifiers(const Token* tok)
{
if (Token::Match(tok, ":: %name%"))
tok = tok->next();
while (Token::Match(tok, "%name% ::") ||
(Token::Match(tok, "%name% <") && Token::Match(tok->linkAt(1), ">|>> ::"))) {
if (tok->strAt(1) == "::")
tok = tok->tokAt(2);
else
tok = tok->linkAt(1)->tokAt(2);
}
return tok;
}
static bool isExecutableScope(const Token* tok)
{
if (!Token::simpleMatch(tok, "{"))
return false;
const Token * tok2 = tok->link()->previous();
if (Token::simpleMatch(tok2, "; }"))
return true;
if (tok2 == tok)
return false;
if (Token::simpleMatch(tok2, "} }")) { // inner scope
const Token* startTok = tok2->link();
if (Token::Match(startTok->previous(), "do|try|else {"))
return true;
if (Token::Match(startTok->previous(), ")|] {"))
return !findLambdaStartToken(tok2);
return isExecutableScope(startTok);
}
return false;
}
const Token* SymbolDatabase::isEnumDefinition(const Token* tok)
{
if (!Token::Match(tok, "enum class| %name%| {|:"))
return nullptr;
while (!Token::Match(tok, "[{:]"))
tok = tok->next();
if (tok->str() == "{")
return tok;
tok = tok->next(); // skip ':'
while (Token::Match(tok, "%name%|::"))
tok = tok->next();
return Token::simpleMatch(tok, "{") ? tok : nullptr;
}
void SymbolDatabase::createSymbolDatabaseFindAllScopes()
{
// create global scope
scopeList.emplace_back(this, nullptr, nullptr);
// pointer to current scope
Scope *scope = &scopeList.back();
// Store the ending of init lists
std::stack<std::pair<const Token*, const Scope*>> endInitList;
auto inInitList = [&] {
if (endInitList.empty())
return false;
return endInitList.top().second == scope;
};
std::stack<const Token*> inIfCondition;
auto addLambda = [this, &scope](const Token* tok, const Token* lambdaEndToken) -> const Token* {
const Token* lambdaStartToken = lambdaEndToken->link();
const Token* argStart = lambdaStartToken->astParent();
const Token* funcStart = Token::simpleMatch(argStart, "[") ? argStart : argStart->astParent();
const Function* function = addGlobalFunction(scope, tok, argStart, funcStart);
if (!function)
mTokenizer.syntaxError(tok);
return lambdaStartToken;
};
// Store current access in each scope (depends on evaluation progress)
std::map<const Scope*, AccessControl> access;
const bool doProgress = (mSettings.reportProgress != -1);
// find all scopes
for (const Token *tok = mTokenizer.tokens(); tok; tok = tok ? tok->next() : nullptr) {
// #5593 suggested to add here:
if (doProgress)
mErrorLogger.reportProgress(mTokenizer.list.getSourceFilePath(),
"SymbolDatabase",
tok->progressValue());
// Locate next class
if ((tok->isCpp() && tok->isKeyword() &&
((Token::Match(tok, "class|struct|union|namespace ::| %name% final| {|:|::|<") &&
!Token::Match(tok->previous(), "new|friend|const|enum|typedef|mutable|volatile|using|)|(|<")) ||
isEnumDefinition(tok)))
|| (tok->isC() && tok->isKeyword() && Token::Match(tok, "struct|union|enum %name% {"))) {
const Token *tok2 = tok->tokAt(2);
if (tok->strAt(1) == "::")
tok2 = tok2->next();
else if (tok->isCpp() && tok->strAt(1) == "class")
tok2 = tok2->next();
while (Token::Match(tok2, ":: %name%"))
tok2 = tok2->tokAt(2);
while (Token::Match(tok2, "%name% :: %name%"))
tok2 = tok2->tokAt(2);
// skip over template args
while (tok2 && tok2->str() == "<" && tok2->link()) {
tok2 = tok2->link()->next();
while (Token::Match(tok2, ":: %name%"))
tok2 = tok2->tokAt(2);
}
// skip over final
if (tok2 && tok2->isCpp() && Token::simpleMatch(tok2, "final"))
tok2 = tok2->next();
// make sure we have valid code
if (!Token::Match(tok2, "{|:")) {
// check for qualified variable
if (tok2 && tok2->next()) {
if (tok2->strAt(1) == ";")
tok = tok2->next();
else if (Token::simpleMatch(tok2->next(), "= {") &&
Token::simpleMatch(tok2->linkAt(2), "} ;"))
tok = tok2->linkAt(2)->next();
else if (Token::Match(tok2->next(), "(|{") &&
tok2->linkAt(1)->strAt(1) == ";")
tok = tok2->linkAt(1)->next();
// skip variable declaration
else if (Token::Match(tok2, "*|&|>"))
continue;
else if (Token::Match(tok2, "%name% (") && TokenList::isFunctionHead(tok2->next(), "{;"))
continue;
else if (Token::Match(tok2, "%name% [|="))
continue;
// skip template
else if (Token::simpleMatch(tok2, ";") &&
Token::Match(tok->previous(), "template|> class|struct")) {
tok = tok2;
continue;
}
// forward declaration
else if (Token::simpleMatch(tok2, ";") &&
Token::Match(tok, "class|struct|union")) {
// TODO: see if it can be used
tok = tok2;
continue;
}
// skip constructor
else if (Token::simpleMatch(tok2, "(") &&
Token::simpleMatch(tok2->link(), ") ;")) {
tok = tok2->link()->next();
continue;
} else
throw InternalError(tok2, "SymbolDatabase bailout; unhandled code", InternalError::SYNTAX);
continue;
}
break; // bail
}
const Token * name = tok->next();
if (name->str() == "class" && name->strAt(-1) == "enum")
name = name->next();
Scope *new_scope = findScope(name, scope);
if (new_scope) {
// only create base list for classes and structures
if (new_scope->isClassOrStruct()) {
// goto initial '{'
if (!new_scope->definedType)
mTokenizer.syntaxError(nullptr); // #6808
tok2 = new_scope->definedType->initBaseInfo(tok, tok2);
// make sure we have valid code
if (!tok2) {
break;
}
}
// definition may be different than declaration
if (tok->isCpp() && tok->str() == "class") {
access[new_scope] = AccessControl::Private;
new_scope->type = ScopeType::eClass;
} else if (tok->str() == "struct") {
access[new_scope] = AccessControl::Public;
new_scope->type = ScopeType::eStruct;
}
new_scope->classDef = tok;
new_scope->setBodyStartEnd(tok2);
// make sure we have valid code
if (!new_scope->bodyEnd) {
mTokenizer.syntaxError(tok);
}
scope = new_scope;
tok = tok2;
} else {
scopeList.emplace_back(this, tok, scope);
new_scope = &scopeList.back();
if (tok->str() == "class")
access[new_scope] = AccessControl::Private;
else if (tok->str() == "struct" || tok->str() == "union")
access[new_scope] = AccessControl::Public;
// fill typeList...
if (new_scope->isClassOrStructOrUnion() || new_scope->type == ScopeType::eEnum) {
Type* new_type = findType(name, scope);
if (!new_type) {
typeList.emplace_back(new_scope->classDef, new_scope, scope);
new_type = &typeList.back();
scope->definedTypesMap[new_type->name()] = 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) {
mTokenizer.syntaxError(tok);
}
} else if (new_scope->type == ScopeType::eEnum) {
if (tok2->str() == ":") {
tok2 = tok2->tokAt(2);
while (Token::Match(tok2, "%name%|::"))
tok2 = tok2->next();
}
}
new_scope->setBodyStartEnd(tok2);
// make sure we have valid code
if (!new_scope->bodyEnd) {
mTokenizer.syntaxError(tok);
}
if (new_scope->type == ScopeType::eEnum) {
tok2 = new_scope->addEnum(tok);
scope->nestedList.push_back(new_scope);
if (!tok2)
mTokenizer.syntaxError(tok);
} else {
// 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 (tok->isCpp() && tok->isKeyword() &&
Token::Match(tok, "namespace %name% %type% (") &&
tok->tokAt(2)->isUpperCaseName() &&
Token::simpleMatch(tok->linkAt(3), ") {")) {
scopeList.emplace_back(this, tok, scope);
Scope *new_scope = &scopeList.back();
access[new_scope] = AccessControl::Public;
const Token *tok2 = tok->linkAt(3)->next();
new_scope->setBodyStartEnd(tok2);
// make sure we have valid code
if (!new_scope->bodyEnd) {
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 (tok->isKeyword() && Token::Match(tok, "class|struct|union %name% ;") &&
tok->strAt(-1) != "friend") {
if (!findType(tok->next(), scope)) {
// fill typeList..
typeList.emplace_back(tok, nullptr, scope);
Type* new_type = &typeList.back();
scope->definedTypesMap[new_type->name()] = new_type;
}
tok = tok->tokAt(2);
}
// using namespace
else if (tok->isCpp() && tok->isKeyword() && Token::Match(tok, "using namespace ::| %type% ;|::")) {
Scope::UsingInfo using_info;
using_info.start = tok; // save location
using_info.scope = findNamespace(tok->tokAt(2), scope);
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 (Token::Match(tok, "%type% ::"))
tok = tok->tokAt(2);
}
// using type alias
else if (tok->isCpp() && tok->isKeyword() && Token::Match(tok, "using %name% =") && !tok->tokAt(2)->isSimplifiedTypedef()) {
if (tok->strAt(-1) != ">" && !findType(tok->next(), scope)) {
// fill typeList..
typeList.emplace_back(tok, nullptr, scope);
Type* new_type = &typeList.back();
scope->definedTypesMap[new_type->name()] = new_type;
}
tok = tok->tokAt(3);
while (tok && tok->str() != ";") {
if (Token::simpleMatch(tok, "decltype ("))
tok = tok->linkAt(1);
else
tok = tok->next();
}
}
// unnamed struct and union
else if (tok->isKeyword() && Token::Match(tok, "struct|union {") &&
Token::Match(tok->linkAt(1), "} *|&| %name% ;|[|=")) {
scopeList.emplace_back(this, tok, scope);
Scope *new_scope = &scopeList.back();
access[new_scope] = AccessControl::Public;
const Token* varNameTok = tok->linkAt(1)->next();
if (varNameTok->str() == "*") {
varNameTok = varNameTok->next();
} else if (varNameTok->str() == "&") {
varNameTok = varNameTok->next();
}
typeList.emplace_back(tok, new_scope, scope);
{
Type* new_type = &typeList.back();
new_scope->definedType = new_type;
scope->definedTypesMap[new_type->name()] = new_type;
}
scope->addVariable(varNameTok, tok, tok, access[scope], new_scope->definedType, scope, mSettings);
const Token *tok2 = tok->next();
new_scope->setBodyStartEnd(tok2);
// make sure we have valid code
if (!new_scope->bodyEnd) {
scopeList.pop_back();
break;
}
// make the new scope the current scope
scope->nestedList.push_back(new_scope);
scope = new_scope;
tok = tok2;
}
// anonymous struct, union and namespace
else if (tok->isKeyword() && ((Token::Match(tok, "struct|union {") &&
Token::simpleMatch(tok->linkAt(1), "} ;")) ||
Token::simpleMatch(tok, "namespace {"))) {
scopeList.emplace_back(this, tok, scope);
Scope *new_scope = &scopeList.back();
access[new_scope] = AccessControl::Public;
const Token *tok2 = tok->next();
new_scope->setBodyStartEnd(tok2);
typeList.emplace_back(tok, new_scope, scope);
{
Type* new_type = &typeList.back();
new_scope->definedType = new_type;
scope->definedTypesMap[new_type->name()] = new_type;
}
// make sure we have valid code
if (!new_scope->bodyEnd) {
scopeList.pop_back();
break;
}
// make the new scope the current scope
scope->nestedList.push_back(new_scope);
scope = new_scope;
tok = tok2;
}
// forward declared enum
else if (tok->isKeyword() && (Token::Match(tok, "enum class| %name% ;") || Token::Match(tok, "enum class| %name% : %name% ;"))) {
typeList.emplace_back(tok, nullptr, scope);
Type* new_type = &typeList.back();
scope->definedTypesMap[new_type->name()] = new_type;
tok = tok->tokAt(2);
}
// check for end of scope
else if (tok == scope->bodyEnd) {
do {
access.erase(scope);
scope = const_cast<Scope*>(scope->nestedIn);
} while (scope->type != ScopeType::eGlobal && succeeds(tok, scope->bodyEnd));
continue;
}
// check for end of init list
else if (inInitList() && tok == endInitList.top().first) {
endInitList.pop();
continue;
}
// check if in class or structure or union
else if (scope->isClassOrStructOrUnion()) {
const Token *funcStart = nullptr;
const Token *argStart = nullptr;
const Token *declEnd = nullptr;
// What section are we in..
if (tok->str() == "private:")
access[scope] = AccessControl::Private;
else if (tok->str() == "protected:")
access[scope] = AccessControl::Protected;
else if (tok->str() == "public:" || tok->str() == "__published:")
access[scope] = AccessControl::Public;
else if (Token::Match(tok, "public|protected|private %name% :")) {
if (tok->str() == "private")
access[scope] = AccessControl::Private;
else if (tok->str() == "protected")
access[scope] = AccessControl::Protected;
else
access[scope] = AccessControl::Public;
tok = tok->tokAt(2);
}
// class function?
else if (isFunction(tok, scope, funcStart, argStart, declEnd)) {
if (tok->strAt(-1) != "::" || tok->strAt(-2) == scope->className) {
Function function(tok, scope, funcStart, argStart);
// save the access type
function.access = access[scope];
const Token *end = function.argDef->link();
// count the number of constructors
if (function.isConstructor())
scope->numConstructors++;
// assume implementation is inline (definition and implementation same)
function.token = function.tokenDef;
function.arg = function.argDef;
// out of line function
if (const Token *endTok = TokenList::isFunctionHead(end, ";")) {
tok = endTok;
scope->addFunction(std::move(function));
}
// inline function
else {
// find start of function '{'
bool foundInitList = false;
while (end && end->str() != "{" && end->str() != ";") {
if (end->link() && Token::Match(end, "(|<")) {
end = end->link();
} else if (foundInitList &&
Token::Match(end, "%name%|> {") &&
Token::Match(end->linkAt(1), "} ,|{")) {
end = end->linkAt(1);
} else {
if (end->str() == ":")
foundInitList = true;
end = end->next();
}
}
if (!end || end->str() == ";")
continue;
scope->addFunction(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 */
const Scope * const nested = scope->findInNestedListRecursive(tok->strAt(-2));
if (nested)
addClassFunction(scope, tok, argStart);
else {
/** @todo handle friend functions */
}
}
}
// friend class declaration?
else if (tok->isCpp() && tok->isKeyword() && Token::Match(tok, "friend class|struct| ::| %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);
// fill this in after parsing is complete
friendInfo.type = nullptr;
if (!scope->definedType)
mTokenizer.syntaxError(tok);
scope->definedType->friendList.push_back(friendInfo);
}
} else if (scope->type == ScopeType::eNamespace || scope->type == ScopeType::eGlobal) {
const Token *funcStart = nullptr;
const Token *argStart = nullptr;
const Token *declEnd = nullptr;
// function?
if (isFunction(tok, scope, funcStart, argStart, declEnd)) {
// has body?
if (declEnd && declEnd->str() == "{") {
tok = funcStart;
// class function
if (tok->previous() && tok->strAt(-1) == "::")
addClassFunction(scope, tok, argStart);
// class destructor
else if (tok->previous() &&
tok->strAt(-1) == "~" &&
tok->strAt(-2) == "::")
addClassFunction(scope, tok, argStart);
// regular function
else {
const Function* const function = addGlobalFunction(scope, tok, argStart, funcStart);
if (!function)
mTokenizer.syntaxError(tok);
}
// syntax error?
if (!scope)
mTokenizer.syntaxError(tok);
}
// function prototype?
else if (declEnd && declEnd->str() == ";") {
if (tok->astParent() && tok->astParent()->str() == "::" &&
Token::Match(declEnd->previous(), "default|delete")) {
addClassFunction(scope, tok, argStart);
continue;
}
bool newFunc = true; // Is this function already in the database?
auto range = scope->functionMap.equal_range(tok->str());
for (std::multimap<std::string, const Function*>::const_iterator it = range.first; it != range.second; ++it) {
if (it->second->argsMatch(scope, it->second->argDef, argStart, emptyString, 0)) {
newFunc = false;
break;
}
}
// save function prototype in database
if (newFunc) {
addGlobalFunctionDecl(scope, tok, argStart, funcStart);
}
tok = declEnd;
continue;
}
} else if (const Token *lambdaEndToken = findLambdaEndToken(tok)) {
tok = addLambda(tok, lambdaEndToken);
}
} else if (scope->isExecutable()) {
if (tok->isKeyword() && Token::Match(tok, "else|try|do {")) {
const Token* tok1 = tok->next();
if (tok->str() == "else")
scopeList.emplace_back(this, tok, scope, ScopeType::eElse, tok1);
else if (tok->str() == "do")
scopeList.emplace_back(this, tok, scope, ScopeType::eDo, tok1);
else //if (tok->str() == "try")
scopeList.emplace_back(this, tok, scope, ScopeType::eTry, tok1);
tok = tok1;
scope->nestedList.push_back(&scopeList.back());
scope = &scopeList.back();
} else if (tok->isKeyword() && Token::Match(tok, "if|for|while|catch|switch (") && Token::simpleMatch(tok->linkAt(1), ") {")) {
const Token *scopeStartTok = tok->linkAt(1)->next();
if (tok->str() == "if")
scopeList.emplace_back(this, tok, scope, ScopeType::eIf, scopeStartTok);
else if (tok->str() == "for") {
scopeList.emplace_back(this, tok, scope, ScopeType::eFor, scopeStartTok);
} else if (tok->str() == "while")
scopeList.emplace_back(this, tok, scope, ScopeType::eWhile, scopeStartTok);
else if (tok->str() == "catch") {
scopeList.emplace_back(this, tok, scope, ScopeType::eCatch, scopeStartTok);
} else // if (tok->str() == "switch")
scopeList.emplace_back(this, tok, scope, ScopeType::eSwitch, scopeStartTok);
scope->nestedList.push_back(&scopeList.back());
scope = &scopeList.back();
if (scope->type == ScopeType::eFor)
scope->checkVariable(tok->tokAt(2), AccessControl::Local, mSettings); // check for variable declaration and add it to new scope if found
else if (scope->type == ScopeType::eCatch)
scope->checkVariable(tok->tokAt(2), AccessControl::Throw, mSettings); // check for variable declaration and add it to new scope if found
tok = tok->next();
inIfCondition.push(scopeStartTok);
} else if (Token::Match(tok, "%var% {")) {
endInitList.emplace(tok->linkAt(1), scope);
tok = tok->next();
} else if (const Token *lambdaEndToken = findLambdaEndToken(tok)) {
tok = addLambda(tok, lambdaEndToken);
} else if (tok->str() == "{") {
if (inInitList()) {
endInitList.emplace(tok->link(), scope);
} else if (!inIfCondition.empty() && tok == inIfCondition.top()) {
inIfCondition.pop();
} else if (isExecutableScope(tok)) {
scopeList.emplace_back(this, tok, scope, ScopeType::eUnconditional, tok);
scope->nestedList.push_back(&scopeList.back());
scope = &scopeList.back();
} else {
endInitList.emplace(tok->link(), scope);
}
} else if (Token::Match(tok, "extern %type%")) {
const Token * ftok = tok->next();
while (Token::Match(ftok, "%name%|*|&"))
ftok = ftok->next();
if (!ftok || ftok->str() != "(")
continue;
ftok = ftok->previous();
if (Token::simpleMatch(ftok->linkAt(1), ") ;")) {
const Token *funcStart = nullptr;
const Token *argStart = nullptr;
const Token *declEnd = nullptr;
if (isFunction(ftok, scope, funcStart, argStart, declEnd)) {
if (declEnd && declEnd->str() == ";") {
bool newFunc = true; // Is this function already in the database?
auto range = scope->functionMap.equal_range(ftok->str());
for (std::multimap<std::string, const Function*>::const_iterator it = range.first; it != range.second; ++it) {
if (it->second->argsMatch(scope, it->second->argDef, argStart, emptyString, 0)) {
newFunc = false;
break;
}
}
// save function prototype in database
if (newFunc) {
Function function(ftok, scope, funcStart, argStart);
if (function.isExtern()) {
scope->addFunction(std::move(function));
tok = declEnd;
}
}
}
}
}
}
// syntax error?
if (!scope)
mTokenizer.syntaxError(tok);
// End of scope or list should be handled above
if (tok->str() == "}")
mTokenizer.syntaxError(tok);
}
}
}
void SymbolDatabase::createSymbolDatabaseClassInfo()
{
if (mTokenizer.isC())
return;
// fill in using info
for (Scope& scope : scopeList) {
for (Scope::UsingInfo& usingInfo : scope.usingList) {
// only find if not already found
if (usingInfo.scope == nullptr) {
// check scope for match
const Scope * const found = findScope(usingInfo.start->tokAt(2), &scope);
if (found) {
// set found scope
usingInfo.scope = found;
break;
}
}
}
}
// fill in base class info
for (Type& type : typeList) {
// finish filling in base class info
for (Type::BaseInfo & i : type.derivedFrom) {
const Type* found = findType(i.nameTok, type.enclosingScope, /*lookOutside*/ true);
if (found && found->findDependency(&type)) {
// circular dependency
//mTokenizer.syntaxError(nullptr);
} else {
i.type = found;
}
}
}
// fill in friend info
for (Type & type : typeList) {
for (Type::FriendInfo &friendInfo : type.friendList) {
friendInfo.type = findType(friendInfo.nameStart, type.enclosingScope);
}
}
}
void SymbolDatabase::createSymbolDatabaseVariableInfo()
{
// fill in variable info
for (Scope& scope : scopeList) {
// find variables
scope.getVariableList(mSettings);
}
// fill in function arguments
for (Scope& scope : scopeList) {
for (auto func = scope.functionList.begin(); func != scope.functionList.end(); ++func) {
// add arguments
func->addArguments(this, &scope);
}
}
}
void SymbolDatabase::createSymbolDatabaseCopyAndMoveConstructors()
{
// fill in class and struct copy/move constructors
for (Scope& scope : scopeList) {
if (!scope.isClassOrStruct())
continue;
for (auto func = scope.functionList.begin(); func != scope.functionList.end(); ++func) {
if (!func->isConstructor() || func->minArgCount() != 1)
continue;
const Variable* firstArg = func->getArgumentVar(0);
if (firstArg->type() == scope.definedType) {
if (firstArg->isRValueReference())
func->type = FunctionType::eMoveConstructor;
else if (firstArg->isReference() && !firstArg->isPointer())
func->type = FunctionType::eCopyConstructor;
}
if (func->type == FunctionType::eCopyConstructor ||
func->type == FunctionType::eMoveConstructor)
scope.numCopyOrMoveConstructors++;
}
}
}
void SymbolDatabase::createSymbolDatabaseFunctionScopes()
{
// fill in function scopes
for (const Scope & scope : scopeList) {
if (scope.type == ScopeType::eFunction)
functionScopes.push_back(&scope);
}
}
void SymbolDatabase::createSymbolDatabaseClassAndStructScopes()
{
// fill in class and struct scopes
for (const Scope& scope : scopeList) {
if (scope.isClassOrStruct())
classAndStructScopes.push_back(&scope);
}
}
void SymbolDatabase::createSymbolDatabaseFunctionReturnTypes()
{
// fill in function return types
for (Scope& scope : scopeList) {
for (auto func = scope.functionList.begin(); func != scope.functionList.end(); ++func) {
// add return types
if (func->retDef) {
const Token *type = func->retDef;
while (Token::Match(type, "static|const|struct|union|enum"))
type = type->next();
if (type) {
func->retType = findVariableTypeInBase(&scope, type);
if (!func->retType)
func->retType = findTypeInNested(type, func->nestedIn);
}
}
}
}
}
void SymbolDatabase::createSymbolDatabaseNeedInitialization()
{
if (mTokenizer.isC()) {
// For C code it is easy, as there are no constructors and no default values
for (const Scope& scope : scopeList) {
if (scope.definedType)
scope.definedType->needInitialization = Type::NeedInitialization::True;
}
} else {
// For C++, it is more difficult: 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 (Scope& scope : scopeList) {
if (!scope.isClassOrStructOrUnion())
continue;
if (scope.classDef && Token::simpleMatch(scope.classDef->previous(), ">")) // skip uninstantiated template
continue;
if (!scope.definedType) {
mBlankTypes.emplace_back();
scope.definedType = &mBlankTypes.back();
}
if (scope.isClassOrStruct() && scope.definedType->needInitialization == Type::NeedInitialization::Unknown) {
// check for default constructor
bool hasDefaultConstructor = false;
for (const Function& func : scope.functionList) {
if (func.type == FunctionType::eConstructor) {
// check for no arguments: func ( )
if (func.argCount() == 0) {
hasDefaultConstructor = true;
break;
}
/** check for arguments with default values */
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::NeedInitialization::False;
// check each member variable to see if it needs initialization
else {
bool needInitialization = false;
bool unknown = false;
for (const Variable& var: scope.varlist) {
if (var.isStatic())
continue;
if (var.isClass() && !var.isReference()) {
if (var.type()) {
// does this type need initialization?
if (var.type()->needInitialization == Type::NeedInitialization::True && !var.hasDefault() && !var.isStatic())
needInitialization = true;
else if (var.type()->needInitialization == Type::NeedInitialization::Unknown) {
if (!(var.valueType() && var.valueType()->type == ValueType::CONTAINER))
unknown = true;
}
}
} else if (!var.hasDefault()) {
needInitialization = true;