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tokenize.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 "tokenize.h"
#include "astutils.h"
#include "errorlogger.h"
#include "errortypes.h"
#include "library.h"
#include "mathlib.h"
#include "path.h"
#include "platform.h"
#include "preprocessor.h"
#include "settings.h"
#include "standards.h"
#include "summaries.h"
#include "symboldatabase.h"
#include "templatesimplifier.h"
#include "timer.h"
#include "token.h"
#include "utils.h"
#include "valueflow.h"
#include "vfvalue.h"
#include <algorithm>
#include <array>
#include <cassert>
#include <cctype>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <iostream>
#include <iterator>
#include <exception>
#include <memory>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
#include <simplecpp.h>
//---------------------------------------------------------------------------
namespace {
// local struct used in setVarId
// in order to store information about the scope
struct VarIdScopeInfo {
VarIdScopeInfo() = default;
VarIdScopeInfo(bool isExecutable, bool isStructInit, bool isEnum, nonneg int startVarid)
: isExecutable(isExecutable), isStructInit(isStructInit), isEnum(isEnum), startVarid(startVarid) {}
const bool isExecutable{};
const bool isStructInit{};
const bool isEnum{};
const nonneg int startVarid{};
};
}
/** Return whether tok is the "{" that starts an enumerator list */
static bool isEnumStart(const Token* tok)
{
if (!Token::simpleMatch(tok, "{"))
return false;
tok = tok->previous();
while (tok && (!tok->isKeyword() || Token::isStandardType(tok->str())) && Token::Match(tok, "%name%|::|:"))
tok = tok->previous();
if (Token::simpleMatch(tok, "class"))
tok = tok->previous();
return Token::simpleMatch(tok, "enum");
}
template<typename T>
static void skipEnumBody(T *&tok)
{
T *defStart = tok;
while (Token::Match(defStart, "%name%|::|:"))
defStart = defStart->next();
if (defStart && defStart->str() == "{")
tok = defStart->link()->next();
}
/**
* is tok the start brace { of a class, struct, union, or enum
*/
static bool isClassStructUnionEnumStart(const Token * tok)
{
if (!Token::Match(tok->previous(), "class|struct|union|enum|%name%|>|>> {"))
return false;
const Token * tok2 = tok->previous();
while (tok2 && !Token::Match(tok2, "class|struct|union|enum|{|}|;"))
tok2 = tok2->previous();
return Token::Match(tok2, "class|struct|union|enum");
}
//---------------------------------------------------------------------------
Tokenizer::Tokenizer(const Settings &settings, ErrorLogger &errorLogger) :
list(&settings),
mSettings(settings),
mErrorLogger(errorLogger),
mTemplateSimplifier(new TemplateSimplifier(*this))
{}
Tokenizer::~Tokenizer()
{
delete mSymbolDatabase;
delete mTemplateSimplifier;
}
//---------------------------------------------------------------------------
// SizeOfType - gives the size of a type
//---------------------------------------------------------------------------
nonneg int Tokenizer::sizeOfType(const std::string& type) const
{
const auto it = utils::as_const(mTypeSize).find(type);
if (it == mTypeSize.end()) {
const Library::PodType* podtype = mSettings.library.podtype(type);
if (!podtype)
return 0;
return podtype->size;
}
return it->second;
}
nonneg int Tokenizer::sizeOfType(const Token *type) const
{
if (!type || type->str().empty())
return 0;
if (type->tokType() == Token::eString)
return Token::getStrLength(type) + 1U;
const auto it = utils::as_const(mTypeSize).find(type->str());
if (it == mTypeSize.end()) {
const Library::PodType* podtype = mSettings.library.podtype(type->str());
if (!podtype)
return 0;
return podtype->size;
}
if (type->isLong()) {
if (type->str() == "double")
return mSettings.platform.sizeof_long_double;
if (type->str() == "long")
return mSettings.platform.sizeof_long_long;
}
return it->second;
}
//---------------------------------------------------------------------------
// check if this statement is a duplicate definition
bool Tokenizer::duplicateTypedef(Token *&tokPtr, const Token *name, const Token *typeDef) const
{
// check for an end of definition
Token * tok = tokPtr;
if (tok && Token::Match(tok->next(), ";|,|[|=|)|>|(|{")) {
Token * end = tok->next();
if (end->str() == "[") {
if (!end->link())
syntaxError(end); // invalid code
end = end->link()->next();
} else if (end->str() == ",") {
// check for derived class
if (Token::Match(tok->previous(), "public|private|protected"))
return false;
// find end of definition
while (end && end->next() && !Token::Match(end->next(), ";|)|>")) {
if (end->strAt(1) == "(")
end = end->linkAt(1);
end = (end)?end->next():nullptr;
}
if (end)
end = end->next();
} else if (end->str() == "(") {
if (startsWith(tok->strAt(-1), "operator"))
// conversion operator
return false;
if (tok->strAt(-1) == "typedef")
// typedef of function returning this type
return false;
if (Token::Match(tok->previous(), "public:|private:|protected:"))
return false;
if (tok->strAt(-1) == ">") {
if (!Token::Match(tok->tokAt(-2), "%type%"))
return false;
if (!Token::Match(tok->tokAt(-3), ",|<"))
return false;
tokPtr = end->link();
return true;
}
}
if (end) {
if (Token::simpleMatch(end, ") {")) { // function parameter ?
// look backwards
if (Token::Match(tok->previous(), "%type%") &&
!Token::Match(tok->previous(), "return|new|const|struct")) {
// duplicate definition so skip entire function
tokPtr = end->linkAt(1);
return true;
}
} else if (end->str() == ">") { // template parameter ?
// look backwards
if (Token::Match(tok->previous(), "%type%") &&
!Token::Match(tok->previous(), "return|new|const|volatile")) {
// duplicate definition so skip entire template
while (end && end->str() != "{")
end = end->next();
if (end) {
tokPtr = end->link();
return true;
}
}
} else {
// look backwards
if (Token::Match(tok->previous(), "typedef|}|>") ||
(end->str() == ";" && tok->strAt(-1) == ",") ||
(tok->strAt(-1) == "*" && tok->strAt(1) != "(") ||
(Token::Match(tok->previous(), "%type%") &&
(!Token::Match(tok->previous(), "return|new|const|friend|public|private|protected|throw|extern") &&
!Token::simpleMatch(tok->tokAt(-2), "friend class")))) {
// scan backwards for the end of the previous statement
while (tok && tok->previous() && !Token::Match(tok->previous(), ";|{")) {
if (tok->strAt(-1) == "}") {
tok = tok->linkAt(-1);
} else if (tok->strAt(-1) == "typedef") {
return true;
} else if (tok->strAt(-1) == "enum") {
return true;
} else if (tok->strAt(-1) == "struct") {
if (tok->strAt(-2) == "typedef" &&
tok->strAt(1) == "{" &&
typeDef->strAt(3) != "{") {
// declaration after forward declaration
return true;
}
if (tok->strAt(1) == "{")
return true;
if (Token::Match(tok->next(), ")|*"))
return true;
if (tok->strAt(1) == name->str())
return true;
if (tok->strAt(1) != ";")
return true;
return false;
} else if (tok->strAt(-1) == "union") {
return tok->strAt(1) != ";";
} else if (tok->isCpp() && tok->strAt(-1) == "class") {
return tok->strAt(1) != ";";
}
if (tok)
tok = tok->previous();
}
if (tokPtr->strAt(1) != "(" || !Token::Match(tokPtr->linkAt(1), ") .|(|["))
return true;
}
}
}
}
return false;
}
void Tokenizer::unsupportedTypedef(const Token *tok) const
{
if (!mSettings.debugwarnings)
return;
std::ostringstream str;
const Token *tok1 = tok;
int level = 0;
while (tok) {
if (level == 0 && tok->str() == ";")
break;
if (tok->str() == "{")
++level;
else if (tok->str() == "}") {
if (level == 0)
break;
--level;
}
if (tok != tok1)
str << " ";
str << tok->str();
tok = tok->next();
}
if (tok)
str << " ;";
reportError(tok1, Severity::debug, "simplifyTypedef",
"Failed to parse \'" + str.str() + "\'. The checking continues anyway.");
}
Token * Tokenizer::deleteInvalidTypedef(Token *typeDef)
{
Token *tok = nullptr;
// remove typedef but leave ;
while (typeDef->next()) {
if (typeDef->strAt(1) == ";") {
typeDef->deleteNext();
break;
}
if (typeDef->strAt(1) == "{")
Token::eraseTokens(typeDef, typeDef->linkAt(1));
else if (typeDef->strAt(1) == "}")
break;
typeDef->deleteNext();
}
if (typeDef != list.front()) {
tok = typeDef->previous();
tok->deleteNext();
} else {
list.front()->deleteThis();
tok = list.front();
}
return tok;
}
namespace {
struct Space {
std::string className;
const Token* bodyEnd{}; // for body contains typedef define
const Token* bodyEnd2{}; // for body contains typedef using
bool isNamespace{};
std::set<std::string> recordTypes;
};
}
static Token *splitDefinitionFromTypedef(Token *tok, nonneg int *unnamedCount)
{
std::string name;
std::set<std::string> qualifiers;
while (Token::Match(tok->next(), "const|volatile")) {
qualifiers.insert(tok->strAt(1));
tok->deleteNext();
}
// skip "class|struct|union|enum"
Token *tok1 = tok->tokAt(2);
const bool hasName = Token::Match(tok1, "%name%");
// skip name
if (hasName) {
name = tok1->str();
tok1 = tok1->next();
}
// skip base classes if present
if (tok1->str() == ":") {
tok1 = tok1->next();
while (tok1 && tok1->str() != "{")
tok1 = tok1->next();
if (!tok1)
return nullptr;
}
// skip to end
tok1 = tok1->link();
if (!hasName) { // unnamed
if (tok1->next()) {
// use typedef name if available
if (Token::Match(tok1->next(), "%type%"))
name = tok1->strAt(1);
else // create a unique name
name = "Unnamed" + std::to_string((*unnamedCount)++);
tok->next()->insertToken(name);
} else
return nullptr;
}
tok1->insertToken(";");
tok1 = tok1->next();
if (tok1->next() && tok1->strAt(1) == ";" && tok1->strAt(-1) == "}") {
tok->deleteThis();
tok1->deleteThis();
return nullptr;
}
tok1->insertToken("typedef");
tok1 = tok1->next();
Token * tok3 = tok1;
for (const std::string &qualifier : qualifiers) {
tok1->insertToken(qualifier);
tok1 = tok1->next();
}
tok1->insertToken(tok->strAt(1)); // struct, union or enum
tok1 = tok1->next();
tok1->insertToken(name);
tok->deleteThis();
tok = tok3;
return tok;
}
/* This function is called when processing function related typedefs.
* If simplifyTypedef generates an "Internal Error" message and the
* code that generated it deals in some way with functions, then this
* function will probably need to be extended to handle a new function
* related pattern */
const Token *Tokenizer::processFunc(const Token *tok2, bool inOperator) const
{
if (tok2->next() && tok2->strAt(1) != ")" &&
tok2->strAt(1) != ",") {
// skip over tokens for some types of canonicalization
if (Token::Match(tok2->next(), "( * %type% ) ("))
tok2 = tok2->linkAt(5);
else if (Token::Match(tok2->next(), "* ( * %type% ) ("))
tok2 = tok2->linkAt(6);
else if (Token::Match(tok2->next(), "* ( * %type% ) ;"))
tok2 = tok2->tokAt(5);
else if (Token::Match(tok2->next(), "* ( %type% [") &&
Token::Match(tok2->linkAt(4), "] ) ;|="))
tok2 = tok2->linkAt(4)->next();
else if (Token::Match(tok2->next(), "* ( * %type% ("))
tok2 = tok2->linkAt(5)->next();
else if (Token::simpleMatch(tok2->next(), "* [") &&
Token::simpleMatch(tok2->linkAt(2), "] ;"))
tok2 = tok2->next();
else {
if (tok2->strAt(1) == "(")
tok2 = tok2->linkAt(1);
else if (!inOperator && !Token::Match(tok2->next(), "[|>|;")) {
tok2 = tok2->next();
while (Token::Match(tok2, "*|&") &&
!Token::Match(tok2->next(), "[)>,]"))
tok2 = tok2->next();
// skip over namespace
while (Token::Match(tok2, "%name% ::"))
tok2 = tok2->tokAt(2);
if (Token::simpleMatch(tok2, "const"))
tok2 = tok2->next();
if (!tok2)
return nullptr;
if (tok2->str() == "(" &&
tok2->link()->next() &&
tok2->link()->strAt(1) == "(") {
tok2 = tok2->link();
if (tok2->strAt(1) == "(")
tok2 = tok2->linkAt(1);
}
// skip over typedef parameter
if (tok2->next() && tok2->strAt(1) == "(") {
tok2 = tok2->linkAt(1);
if (!tok2->next())
syntaxError(tok2);
if (tok2->strAt(1) == "(")
tok2 = tok2->linkAt(1);
}
}
}
}
return tok2;
}
Token *Tokenizer::processFunc(Token *tok2, bool inOperator)
{
return const_cast<Token*>(processFunc(const_cast<const Token*>(tok2), inOperator));
}
void Tokenizer::simplifyUsingToTypedef()
{
if (!isCPP() || mSettings.standards.cpp < Standards::CPP11)
return;
for (Token *tok = list.front(); tok; tok = tok->next()) {
// using a::b; => typedef a::b b;
if ((Token::Match(tok, "[;{}] using %name% :: %name% ::|;") && !tok->tokAt(2)->isKeyword()) ||
(Token::Match(tok, "[;{}] using :: %name% :: %name% ::|;") && !tok->tokAt(3)->isKeyword())) {
Token *endtok = tok->tokAt(5);
if (Token::Match(endtok, "%name%"))
endtok = endtok->next();
while (Token::Match(endtok, ":: %name%"))
endtok = endtok->tokAt(2);
if (endtok && endtok->str() == ";") {
if (endtok->strAt(-1) == endtok->strAt(-3))
continue;
tok->next()->str("typedef");
endtok = endtok->previous();
endtok->insertToken(endtok->str());
}
}
}
}
void Tokenizer::simplifyTypedefLHS()
{
if (!list.front())
return;
for (Token* tok = list.front()->next(); tok; tok = tok->next()) {
if (tok->str() == "typedef") {
bool doSimplify = !Token::Match(tok->previous(), ";|{|}|:|public:|private:|protected:");
if (doSimplify && Token::simpleMatch(tok->previous(), ")") && Token::Match(tok->linkAt(-1)->previous(), "if|for|while"))
doSimplify = false;
bool haveStart = false;
Token* start{};
if (!doSimplify && Token::simpleMatch(tok->previous(), "}")) {
start = tok->linkAt(-1)->previous();
while (Token::Match(start, "%name%")) {
if (Token::Match(start, "class|struct|union|enum")) {
start = start->previous();
doSimplify = true;
haveStart = true;
break;
}
start = start->previous();
}
}
if (doSimplify) {
if (!haveStart) {
start = tok;
while (start && !Token::Match(start, "[;{}]"))
start = start->previous();
}
if (start)
start = start->next();
else
start = list.front();
start->insertTokenBefore(tok->str());
tok->deleteThis();
}
}
}
}
namespace {
class TypedefSimplifier {
private:
Token* mTypedefToken; // The "typedef" token
Token* mEndToken{nullptr}; // Semicolon
std::pair<Token*, Token*> mRangeType;
std::pair<Token*, Token*> mRangeTypeQualifiers;
std::pair<Token*, Token*> mRangeAfterVar;
Token* mNameToken{nullptr};
bool mFail = false;
bool mReplaceFailed = false;
bool mUsed = false;
public:
explicit TypedefSimplifier(Token* typedefToken) : mTypedefToken(typedefToken) {
Token* start = typedefToken->next();
if (Token::simpleMatch(start, "typename"))
start = start->next();
// TODO handle unnamed structs etc
if (Token::Match(start, "const| enum|struct|union|class %name%| {")) {
const std::pair<Token*, Token*> rangeBefore(start, Token::findsimplematch(start, "{"));
// find typedef name token
Token* nameToken = rangeBefore.second->link()->next();
while (Token::Match(nameToken, "%name%|* %name%|*"))
nameToken = nameToken->next();
const std::pair<Token*, Token*> rangeQualifiers(rangeBefore.second->link()->next(), nameToken);
if (Token::Match(nameToken, "%name% ;")) {
if (Token::Match(rangeBefore.second->previous(), "enum|struct|union|class {"))
rangeBefore.second->previous()->insertToken(nameToken->str());
mRangeType = rangeBefore;
mRangeTypeQualifiers = rangeQualifiers;
Token* typeName = rangeBefore.second->previous();
if (typeName->isKeyword()) {
// TODO typeName->insertToken("T:" + std::to_string(num++));
typeName->insertToken(nameToken->str());
}
mNameToken = nameToken;
mEndToken = nameToken->next();
return;
}
}
for (Token* type = start; Token::Match(type, "%name%|*|&|&&"); type = type->next()) {
if (type != start && Token::Match(type, "%name% ;") && !type->isStandardType()) {
mRangeType.first = start;
mRangeType.second = type;
mNameToken = type;
mEndToken = mNameToken->next();
return;
}
if (type != start && Token::Match(type, "%name% [")) {
Token* end = type->linkAt(1);
while (Token::simpleMatch(end, "] ["))
end = end->linkAt(1);
if (!Token::simpleMatch(end, "] ;"))
break;
mRangeType.first = start;
mRangeType.second = type;
mNameToken = type;
mEndToken = end->next();
mRangeAfterVar.first = mNameToken->next();
mRangeAfterVar.second = mEndToken;
return;
}
if (Token::Match(type->next(), "( * const| %name% ) (") && Token::simpleMatch(type->linkAt(1)->linkAt(1), ") ;")) {
mNameToken = type->linkAt(1)->previous();
mEndToken = type->linkAt(1)->linkAt(1)->next();
mRangeType.first = start;
mRangeType.second = mNameToken;
mRangeAfterVar.first = mNameToken->next();
mRangeAfterVar.second = mEndToken;
return;
}
if (type != start && Token::Match(type, "%name% ( !!(") && Token::simpleMatch(type->linkAt(1), ") ;") && !type->isStandardType()) {
mNameToken = type;
mEndToken = type->linkAt(1)->next();
mRangeType.first = start;
mRangeType.second = type;
mRangeAfterVar.first = mNameToken->next();
mRangeAfterVar.second = mEndToken;
return;
}
}
// TODO: handle all typedefs
if ((false))
printTypedef(typedefToken, std::cout);
mFail = true;
}
const Token* getTypedefToken() const {
return mTypedefToken;
}
bool isUsed() const {
return mUsed;
}
bool isInvalidConstFunctionType(const std::map<std::string, TypedefSimplifier>& m) const {
if (!Token::Match(mTypedefToken, "typedef const %name% %name% ;"))
return false;
const auto it = m.find(mTypedefToken->strAt(2));
if (it == m.end())
return false;
return Token::Match(it->second.mNameToken, "%name% (");
}
bool fail() const {
return mFail;
}
bool replaceFailed() const {
return mReplaceFailed;
}
bool isStructEtc() const {
return mRangeType.second && mRangeType.second->str() == "{";
}
std::string name() const {
return mNameToken ? mNameToken->str() : "";
}
void replace(Token* tok) {
if (tok == mNameToken)
return;
mUsed = true;
const bool isFunctionPointer = Token::Match(mNameToken, "%name% )");
// Special handling for T(...) when T is a pointer
if (Token::Match(tok, "%name% [({]") && !isFunctionPointer && !Token::simpleMatch(tok->linkAt(1), ") (")) {
bool pointerType = false;
for (const Token* type = mRangeType.first; type != mRangeType.second; type = type->next()) {
if (type->str() == "*" || type->str() == "&") {
pointerType = true;
break;
}
}
for (const Token* type = mRangeTypeQualifiers.first; type != mRangeTypeQualifiers.second; type = type->next()) {
if (type->str() == "*" || type->str() == "&") {
pointerType = true;
break;
}
}
if (pointerType) {
tok->tokAt(1)->str("(");
tok->linkAt(1)->str(")");
if (tok->linkAt(1) == tok->tokAt(2)) { // T() or T{}
tok->deleteThis();
tok->next()->insertToken("0");
Token* tok2 = insertTokens(tok, mRangeType);
insertTokens(tok2, mRangeTypeQualifiers);
}
else { // functional-style cast
tok->originalName(tok->str());
tok->isSimplifiedTypedef(true);
tok->str("(");
Token* tok2 = insertTokens(tok, mRangeType);
tok2 = insertTokens(tok2, mRangeTypeQualifiers);
Token* tok3 = tok2->insertToken(")");
Token::createMutualLinks(tok, tok3);
tok->insertTokenBefore("(");
tok3 = tok3->linkAt(1);
tok3 = tok3->insertToken(")");
Token::createMutualLinks(tok->tokAt(-1), tok3);
}
return;
}
}
// Special handling of function pointer cast
if (isFunctionPointer && isCast(tok->previous())) {
tok->insertToken("*");
Token* const tok_1 = insertTokens(tok, std::pair<Token*, Token*>(mRangeType.first, mNameToken->linkAt(1)));
tok_1->originalName(tok->str());
tok->deleteThis();
return;
}
// Inherited type => skip "struct" / "class"
if (Token::Match(mRangeType.first, "const| struct|class %name% {") && Token::Match(tok->previous(), "public|protected|private|<")) {
tok->originalName(tok->str());
tok->str(mRangeType.second->strAt(-1));
return;
}
if (Token::Match(tok, "%name% ::")) {
if (Token::Match(mRangeType.first, "const| struct|class|union|enum %name% %name%|{") ||
Token::Match(mRangeType.first, "%name% %name% ;")) {
tok->originalName(tok->str());
tok->str(mRangeType.second->strAt(-1));
} else {
mReplaceFailed = true;
}
return;
}
// pointer => move "const"
if (Token::simpleMatch(tok->previous(), "const")) {
bool pointerType = false;
for (const Token* type = mRangeType.first; type != mRangeType.second; type = type->next()) {
if (type->str() == "*") {
pointerType = true;
break;
}
}
if (pointerType) {
tok->insertToken("const");
tok->next()->column(tok->column());
if (!tok->previous()->getMacroName().empty())
tok->next()->setMacroName(tok->previous()->getMacroName());
tok->deletePrevious();
}
}
// Do not duplicate class/struct/enum/union
if (Token::Match(tok->previous(), "enum|union|struct|class")) {
bool found = false;
const std::string &kw = tok->strAt(-1);
for (const Token* type = mRangeType.first; type != mRangeType.second; type = type->next()) {
if (type->str() == kw) {
found = true;
break;
}
}
if (found)
tok->deletePrevious();
else {
mReplaceFailed = true;
return;
}
}
// don't add class|struct|union in inheritance list
auto rangeType = mRangeType;
if (Token::Match(tok->previous(), "public|private|protected")) {
while (Token::Match(rangeType.first, "const|class|struct|union"))
rangeType.first = rangeType.first->next();
}
Token* const tok2 = insertTokens(tok, rangeType);
Token* const tok3 = insertTokens(tok2, mRangeTypeQualifiers);
tok2->originalName(tok->str());
tok3->originalName(tok->str());
Token *after = tok3;
while (Token::Match(after, "%name%|*|&|&&|::"))
after = after->next();
if (Token::Match(mNameToken, "%name% (") && Token::simpleMatch(tok3->next(), "*")) {
while (Token::Match(after, "(|["))
after = after->link()->next();
if (after) {
tok3->insertToken("(");
after->previous()->insertToken(")");
Token::createMutualLinks(tok3->next(), after->previous());
}
}
if (!after) {
mReplaceFailed = true;
return;
}
bool useAfterVarRange = true;
if (Token::simpleMatch(mRangeAfterVar.first, "[")) {
if (Token::Match(after->previous(), "%name% ( !!*")) {
useAfterVarRange = false;
// Function return type => replace array with "*"
for (const Token* a = mRangeAfterVar.first; Token::simpleMatch(a, "["); a = a->link()->next())
tok3->insertToken("*");
} else if (Token::Match(after->previous(), "%name% ( * %name% ) [")) {
after = after->linkAt(4)->next();
} else {
Token* prev = after->previous();
if (prev->isName() && prev != tok3)
prev = prev->previous();
if (Token::Match(prev, "*|&|&&") && prev != tok3) {
while (Token::Match(prev, "*|&|&&") && prev != tok3)
prev = prev->previous();
prev->insertToken("(");
after->previous()->insertToken(")");
}
}
}
if (isFunctionPointer) {
if (Token::Match(after, "( * %name% ) ("))
after = after->link()->linkAt(1)->next();
else if (after->str() == "(") {
useAfterVarRange = false;
if (Token::simpleMatch(tok3->previous(), "( *"))
tok3->deletePrevious();
}
else if (after->str() == "[") {
while (after && after->str() == "[")
after = after->link()->next();
}
}
else {
while (Token::simpleMatch(after, "["))
after = after->link()->next();
}
if (!after)
throw InternalError(tok, "Failed to simplify typedef. Is the code valid?");
Token* const tok4 = useAfterVarRange ? insertTokens(after->previous(), mRangeAfterVar)->next() : tok3->next();
if (tok->next() == tok4)
throw InternalError(tok, "Failed to simplify typedef. Is the code valid?");
tok->deleteThis();
// Unsplit variable declarations
if (tok4 && tok4->isSplittedVarDeclEq() &&
((tok4->isCpp() && Token::Match(tok4->tokAt(-2), "&|&& %name% ;")) || Token::Match(tok4->previous(), "] ; %name% = {"))) {
tok4->deleteNext();
tok4->deleteThis();
}
// Set links
std::stack<Token*> brackets;
for (; tok != tok4; tok = tok->next()) {
if (Token::Match(tok, "[{([]"))
brackets.push(tok);
else if (Token::Match(tok, "[})]]")) {
Token::createMutualLinks(brackets.top(), tok);
brackets.pop();
}
}
}
void removeDeclaration() {
if (Token::simpleMatch(mRangeType.second, "{")) {
while (Token::Match(mTypedefToken, "typedef|const"))
mTypedefToken->deleteThis();
Token::eraseTokens(mRangeType.second->link(), mEndToken);
} else {
Token::eraseTokens(mTypedefToken, mEndToken);
mTypedefToken->deleteThis();
}
}
static int canReplaceStatic(const Token* tok) {
if (!Token::Match(tok, "%name% %name%|*|&|&&|;|(|)|,|::")) {
if (Token::Match(tok->previous(), "( %name% =") && Token::Match(tok->linkAt(-1), ") %name%|{") && !tok->tokAt(-2)->isKeyword())
return true;
if (Token::Match(tok->previous(), ", %name% ="))
return true;
if (Token::Match(tok->previous(), "new %name% ["))
return true;
if (Token::Match(tok->previous(), "< %name%") && tok->previous()->findClosingBracket())
return true;
if (Token::Match(tok->previous(), ", %name% >|>>")) {
for (const Token* prev = tok->previous(); prev; prev = prev->previous()) {
if (Token::Match(prev, "[;{}(]"))
break;
if (prev->str() == "<" && prev->findClosingBracket() == tok->next())
return true;
if (prev->str() == ")")
prev = prev->link();
}
return true;
}
if (Token::Match(tok->previous(), "public|protected|private"))
return true;
if (Token::Match(tok->previous(), ", %name% :")) {
bool isGeneric = false;
for (; tok; tok = tok->previous()) {
if (Token::Match(tok, ")|]"))
tok = tok->link();
else if (Token::Match(tok, "[;{}(]")) {
isGeneric = Token::simpleMatch(tok->previous(), "_Generic (");
break;
}
}
return isGeneric;
}
return false;
}
return -1;
}
bool canReplace(const Token* tok) {
if (mNameToken == tok)
return false;
if (!Token::Match(tok->previous(), "%name%|;|{|}|(|,|<") && !Token::Match(tok->previous(), "!!. %name% ("))
return false;
{
const int res = canReplaceStatic(tok);
if (res == 0 || res == 1)
return res != 0;
}
if (Token::Match(tok->previous(), "%name%") && !tok->previous()->isKeyword())
return false;
if (Token::simpleMatch(tok->next(), "(") && Token::Match(tok->linkAt(1), ") %name%|{"))
return false;
if (Token::Match(tok->previous(), "struct|union|class|enum %name% %name%") &&
Token::simpleMatch(mRangeType.second, "{") &&
tok->str() != mRangeType.second->strAt(-1))
return true;
if (Token::Match(tok->previous(), "; %name% ;"))
return false;
if (Token::Match(tok->previous(), "<|, %name% * ,|>"))
return true;
for (const Token* after = tok->next(); after; after = after->next()) {
if (Token::Match(after, "%name%|::|&|*|&&"))
continue;
if (after->str() == "<" && after->link())
break;
if (after->isNumber())
return false;
if (after->isComparisonOp() || after->isArithmeticalOp())
return false;
break;
}
for (const Token* before = tok->previous(); before; before = before->previous()) {
if (Token::Match(before, "[+-*/&|~!]"))
return false;
if (Token::Match(before, "struct|union|class|enum") || before->isStandardType())
return false;
if (before->str() == "::")
return false;
if (before->isName())
continue;
break;
}