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10395 lines (9132 loc) · 386 KB
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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2015 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 "tokenize.h"
#include "mathlib.h"
#include "settings.h"
#include "check.h"
#include "path.h"
#include "symboldatabase.h"
#include "templatesimplifier.h"
#include "timer.h"
#include <cstring>
#include <sstream>
#include <cassert>
#include <cctype>
#include <stack>
#include <iostream>
//---------------------------------------------------------------------------
namespace {
// local struct used in setVarId
// in order to store information about the scope
struct scopeStackEntryType {
scopeStackEntryType()
:isExecutable(false), startVarid(0) {
}
scopeStackEntryType(bool _isExecutable, unsigned int _startVarid)
:isExecutable(_isExecutable), startVarid(_startVarid) {
}
const bool isExecutable;
const unsigned int startVarid;
};
}
/**
* is token pointing at function head?
* @param tok A '(' or ')' token in a possible function head
* @param endsWith string after function head
* @return token matching with endsWith if syntax seems to be a function head else nullptr
*/
static const Token * isFunctionHead(const Token *tok, const std::string &endsWith)
{
if (tok->str() == "(")
tok = tok->link();
if (Token::Match(tok, ") const| [;:{]")) {
tok = tok->next();
if (tok->isName())
tok = tok->next();
return (endsWith.find(tok->str()) != std::string::npos) ? tok : nullptr;
}
if (Token::Match(tok, ") const| throw (")) {
tok = tok->next();
while (tok->isName())
tok = tok->next();
tok = tok->link()->next();
while (tok && tok->isName())
tok = tok->next();
return (tok && endsWith.find(tok->str()) != std::string::npos) ? tok : nullptr;
}
return nullptr;
}
/**
* 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() :
list(0),
_settings(0),
_errorLogger(0),
_symbolDatabase(0),
_varId(0),
_codeWithTemplates(false), //is there any templates?
m_timerResults(nullptr)
#ifdef MAXTIME
,maxtime(std::time(0) + MAXTIME)
#endif
{
}
Tokenizer::Tokenizer(const Settings *settings, ErrorLogger *errorLogger) :
list(settings),
_settings(settings),
_errorLogger(errorLogger),
_symbolDatabase(0),
_varId(0),
_codeWithTemplates(false), //is there any templates?
m_timerResults(nullptr)
#ifdef MAXTIME
,maxtime(std::time(0) + MAXTIME)
#endif
{
// make sure settings are specified
assert(_settings);
}
Tokenizer::~Tokenizer()
{
delete _symbolDatabase;
}
//---------------------------------------------------------------------------
// SizeOfType - gives the size of a type
//---------------------------------------------------------------------------
unsigned int Tokenizer::sizeOfType(const Token *type) const
{
if (!type || type->str().empty())
return 0;
if (type->type() == Token::eString)
return static_cast<unsigned int>(Token::getStrLength(type) + 1);
std::map<std::string, unsigned int>::const_iterator it = _typeSize.find(type->str());
if (it == _typeSize.end())
return 0;
else if (type->isLong()) {
if (type->str() == "double")
return _settings->sizeof_long_double;
else if (type->str() == "long")
return _settings->sizeof_long_long;
}
return it->second;
}
//---------------------------------------------------------------------------
Token *Tokenizer::copyTokens(Token *dest, const Token *first, const Token *last, bool one_line)
{
std::stack<Token *> links;
Token *tok2 = dest;
unsigned int linenrs = dest->linenr();
const unsigned int commonFileIndex = dest->fileIndex();
for (const Token *tok = first; tok != last->next(); tok = tok->next()) {
tok2->insertToken(tok->str());
tok2 = tok2->next();
tok2->fileIndex(commonFileIndex);
tok2->linenr(linenrs);
tok2->type(tok->type());
tok2->flags(tok->flags());
tok2->varId(tok->varId());
// Check for links and fix them up
if (Token::Match(tok2, "(|[|{"))
links.push(tok2);
else if (Token::Match(tok2, ")|]|}")) {
if (links.empty())
return tok2;
Token * link = links.top();
tok2->link(link);
link->link(tok2);
links.pop();
}
if (!one_line && tok->next())
linenrs += tok->next()->linenr() - tok->linenr();
}
return tok2;
}
//---------------------------------------------------------------------------
void Tokenizer::duplicateTypedefError(const Token *tok1, const Token *tok2, const std::string &type) const
{
if (tok1 && !(_settings->isEnabled("style") && _settings->inconclusive))
return;
std::list<const Token*> locationList;
locationList.push_back(tok1);
locationList.push_back(tok2);
const std::string tok2_str = tok2 ? tok2->str() : std::string("name");
reportError(locationList, Severity::style, "variableHidingTypedef",
std::string("The " + type + " '" + tok2_str + "' hides a typedef with the same name."), true);
}
void Tokenizer::duplicateDeclarationError(const Token *tok1, const Token *tok2, const std::string &type) const
{
if (tok1 && !(_settings->isEnabled("style")))
return;
std::list<const Token*> locationList;
locationList.push_back(tok1);
locationList.push_back(tok2);
const std::string tok2_str = tok2 ? tok2->str() : std::string("name");
reportError(locationList, Severity::style, "unnecessaryForwardDeclaration",
std::string("The " + type + " '" + tok2_str + "' forward declaration is unnecessary. Type " + type + " is already declared earlier."));
}
// check if this statement is a duplicate definition
bool Tokenizer::duplicateTypedef(Token **tokPtr, const Token *name, const Token *typeDef, const std::set<std::string>& structs) const
{
// check for an end of definition
const Token * tok = *tokPtr;
if (tok && Token::Match(tok->next(), ";|,|[|=|)|>|(|{")) {
const Token * end = tok->next();
if (end->str() == "[") {
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->next()->str() == "(")
end = end->linkAt(1);
end = (end)?end->next():nullptr;
}
if (end)
end = end->next();
} else if (end->str() == "(") {
if (tok->previous()->str().find("operator") == 0) {
// conversion operator
return false;
} else if (tok->previous()->str() == "typedef") {
// typedef of function returning this type
return false;
} else if (Token::Match(tok->previous(), "public:|private:|protected:")) {
return false;
} else if (tok->previous()->str() == ">") {
if (!Token::Match(tok->tokAt(-2), "%type%"))
return false;
if (!Token::Match(tok->tokAt(-3), ",|<"))
return false;
duplicateTypedefError(*tokPtr, name, "template instantiation");
*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")) {
duplicateTypedefError(*tokPtr, name, "function parameter");
// duplicate definition so skip entire function
*tokPtr = end->next()->link();
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) {
duplicateTypedefError(*tokPtr, name, "template parameter");
*tokPtr = end->link();
return true;
}
}
} else {
// look backwards
if (Token::Match(tok->previous(), "typedef|}|>") ||
(end->str() == ";" && tok->previous()->str() == ",") ||
(tok->previous()->str() == "*" && tok->next()->str() != "(") ||
(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->previous()->str() == "}") {
tok = tok->previous()->link();
} else if (tok->previous()->str() == "typedef") {
duplicateTypedefError(*tokPtr, name, "typedef");
return true;
} else if (tok->previous()->str() == "enum") {
duplicateTypedefError(*tokPtr, name, "enum");
return true;
} else if (tok->previous()->str() == "struct") {
if (tok->strAt(-2) == "typedef" &&
tok->next()->str() == "{" &&
typeDef->strAt(3) != "{") {
// declaration after forward declaration
return true;
} else if (tok->next()->str() == "{") {
if (structs.find(name->strAt(-1)) == structs.end())
duplicateTypedefError(*tokPtr, name, "struct");
return true;
} else if (Token::Match(tok->next(), ")|*")) {
return true;
} else if (tok->next()->str() == name->str()) {
return true;
} else if (tok->next()->str() != ";") {
duplicateTypedefError(*tokPtr, name, "struct");
return true;
} else {
// forward declaration after declaration
duplicateDeclarationError(*tokPtr, name, "struct");
return false;
}
} else if (tok->previous()->str() == "union") {
if (tok->next()->str() != ";") {
duplicateTypedefError(*tokPtr, name, "union");
return true;
} else {
// forward declaration after declaration
duplicateDeclarationError(*tokPtr, name, "union");
return false;
}
} else if (tok->previous()->str() == "class") {
if (tok->next()->str() != ";") {
duplicateTypedefError(*tokPtr, name, "class");
return true;
} else {
// forward declaration after declaration
duplicateDeclarationError(*tokPtr, name, "class");
return false;
}
}
tok = tok->previous();
}
duplicateTypedefError(*tokPtr, name, "variable");
return true;
}
}
}
}
return false;
}
void Tokenizer::unsupportedTypedef(const Token *tok) const
{
if (!_settings->debugwarnings)
return;
std::ostringstream str;
const Token *tok1 = tok;
unsigned int level = 0;
while (tok) {
if (level == 0 && tok->str() == ";")
break;
else if (tok->str() == "{")
++level;
else if (tok->str() == "}") {
if (!level)
break;
--level;
}
if (tok != tok1)
str << " ";
str << tok->str();
tok = tok->next();
}
if (tok)
str << " ;";
reportError(tok1, Severity::debug, "debug",
"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->next()->str() == ";") {
typeDef->deleteNext();
break;
} else if (typeDef->next()->str() == "{")
Token::eraseTokens(typeDef, typeDef->linkAt(1));
else if (typeDef->next()->str() == "}")
break;
typeDef->deleteNext();
}
if (typeDef != list.front()) {
tok = typeDef->previous();
tok->deleteNext();
} else {
list.front()->deleteThis();
tok = list.front();
}
return tok;
}
struct Space {
Space() : classEnd(nullptr), isNamespace(false) { }
std::string className;
const Token * classEnd;
bool isNamespace;
};
static Token *splitDefinitionFromTypedef(Token *tok)
{
Token *tok1;
std::string name;
bool isConst = false;
if (tok->next()->str() == "const") {
tok->deleteNext();
isConst = true;
}
if (tok->strAt(2) == "{") { // unnamed
tok1 = tok->linkAt(2);
if (tok1 && tok1->next()) {
// use typedef name if available
if (Token::Match(tok1->next(), "%type%"))
name = tok1->next()->str();
else { // create a unique name
static unsigned int count = 0;
name = "Unnamed" + MathLib::toString(count++);
}
tok->next()->insertToken(name);
} else
return nullptr;
} else if (tok->strAt(3) == ":") {
tok1 = tok->tokAt(4);
while (tok1 && tok1->str() != "{")
tok1 = tok1->next();
if (!tok1)
return nullptr;
tok1 = tok1->link();
name = tok->strAt(2);
} else { // has a name
tok1 = tok->linkAt(3);
if (!tok1)
return nullptr;
name = tok->strAt(2);
}
tok1->insertToken(";");
tok1 = tok1->next();
if (tok1->next() && tok1->next()->str() == ";" && tok1->previous()->str() == "}") {
tok->deleteThis();
tok1->deleteThis();
return nullptr;
} else {
tok1->insertToken("typedef");
tok1 = tok1->next();
Token * tok3 = tok1;
if (isConst) {
tok1->insertToken("const");
tok1 = tok1->next();
}
tok1->insertToken(tok->next()->str()); // 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 */
Token *Tokenizer::processFunc(Token *tok2, bool inOperator) const
{
if (tok2->next() && tok2->next()->str() != ")" &&
tok2->next()->str() != ",") {
// 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->next()->str() == "(")
tok2 = tok2->next()->link();
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 (!tok2)
return nullptr;
if (tok2->str() == "(" &&
tok2->link()->next() &&
tok2->link()->next()->str() == "(") {
tok2 = tok2->link();
if (tok2->next()->str() == "(")
tok2 = tok2->next()->link();
}
// skip over typedef parameter
if (tok2->next() && tok2->next()->str() == "(") {
tok2 = tok2->next()->link();
if (!tok2->next()) {
syntaxError(tok2);
return nullptr;
}
if (tok2->next()->str() == "(")
tok2 = tok2->next()->link();
}
}
}
}
return tok2;
}
void Tokenizer::simplifyTypedef()
{
// Collect all structs for later detection of undefined structs
std::set<std::string> structs;
for (const Token* tok = list.front(); tok; tok = tok->next()) {
if (Token::Match(tok, "struct %type% {|:"))
structs.insert(tok->strAt(1));
}
std::vector<Space> spaceInfo;
bool isNamespace = false;
std::string className;
bool hasClass = false;
bool goback = false;
for (Token *tok = list.front(); tok; tok = tok->next()) {
if (_errorLogger && !list.getFiles().empty())
_errorLogger->reportProgress(list.getFiles()[0], "Tokenize (typedef)", tok->progressValue());
if (_settings->terminated())
return;
#ifdef MAXTIME
if (std::time(0) > maxtime)
return;
#endif
if (goback) {
//jump back once, see the comment at the end of the function
goback = false;
tok = tok->previous();
}
if (tok->str() != "typedef") {
if (tok->str() == "(" && tok->strAt(1) == "typedef") {
// Skip typedefs inside parentheses (#2453 and #4002)
tok = tok->next();
} else if (Token::Match(tok, "class|struct|namespace %any%") &&
(!tok->previous() || (tok->previous() && tok->previous()->str() != "enum"))) {
isNamespace = (tok->str() == "namespace");
hasClass = true;
className = tok->next()->str();
} else if (hasClass && tok->str() == ";") {
hasClass = false;
} else if (hasClass && tok->str() == "{") {
Space info;
info.isNamespace = isNamespace;
info.className = className;
info.classEnd = tok->link();
spaceInfo.push_back(info);
hasClass = false;
} else if (!spaceInfo.empty() && tok->str() == "}" && spaceInfo.back().classEnd == tok) {
spaceInfo.pop_back();
}
continue;
}
// pull struct, union, enum or class definition out of typedef
// use typedef name for unnamed struct, union, enum or class
if (Token::Match(tok->next(), "const| struct|enum|union|class %type%| {")) {
Token *tok1 = splitDefinitionFromTypedef(tok);
if (!tok1)
continue;
tok = tok1;
} else if (Token::Match(tok->next(), "const| struct|class %type% :")) {
Token *tok1 = tok;
while (tok1 && tok1->str() != ";" && tok1->str() != "{")
tok1 = tok1->next();
if (tok1 && tok1->str() == "{") {
tok1 = splitDefinitionFromTypedef(tok);
if (!tok1)
continue;
tok = tok1;
}
}
/** @todo add support for union */
if (Token::Match(tok->next(), "enum %type% %type% ;") && tok->strAt(2) == tok->strAt(3)) {
tok->deleteNext(3);
tok->deleteThis();
if (tok->next())
tok->deleteThis();
//now the next token to process is 'tok', not 'tok->next()';
goback = true;
continue;
}
Token *typeName;
Token *typeStart = nullptr;
Token *typeEnd = nullptr;
Token *argStart = nullptr;
Token *argEnd = nullptr;
Token *arrayStart = nullptr;
Token *arrayEnd = nullptr;
Token *specStart = nullptr;
Token *specEnd = nullptr;
Token *typeDef = tok;
Token *argFuncRetStart = nullptr;
Token *argFuncRetEnd = nullptr;
Token *funcStart = nullptr;
Token *funcEnd = nullptr;
Token *tokOffset = tok->next();
bool function = false;
bool functionPtr = false;
bool functionRef = false;
bool functionRetFuncPtr = false;
bool functionPtrRetFuncPtr = false;
bool ptrToArray = false;
bool refToArray = false;
bool ptrMember = false;
bool typeOf = false;
Token *namespaceStart = nullptr;
Token *namespaceEnd = nullptr;
// check for invalid input
if (!tokOffset) {
syntaxError(tok);
return;
}
if (tokOffset->str() == "::") {
typeStart = tokOffset;
tokOffset = tokOffset->next();
while (Token::Match(tokOffset, "%type% ::"))
tokOffset = tokOffset->tokAt(2);
typeEnd = tokOffset;
if (Token::Match(tokOffset, "%type%"))
tokOffset = tokOffset->next();
} else if (Token::Match(tokOffset, "%type% ::")) {
typeStart = tokOffset;
do {
tokOffset = tokOffset->tokAt(2);
} while (Token::Match(tokOffset, "%type% ::"));
typeEnd = tokOffset;
if (Token::Match(tokOffset, "%type%"))
tokOffset = tokOffset->next();
} else if (Token::Match(tokOffset, "%type%")) {
typeStart = tokOffset;
while (Token::Match(tokOffset, "const|signed|unsigned|struct|enum %type%") ||
(tokOffset->next() && tokOffset->next()->isStandardType()))
tokOffset = tokOffset->next();
typeEnd = tokOffset;
tokOffset = tokOffset->next();
bool atEnd = false;
while (!atEnd) {
if (tokOffset && tokOffset->str() == "::") {
typeEnd = tokOffset;
tokOffset = tokOffset->next();
}
if (Token::Match(tokOffset, "%type%") &&
tokOffset->next() && !Token::Match(tokOffset->next(), "[|;|,|(")) {
typeEnd = tokOffset;
tokOffset = tokOffset->next();
} else if (Token::simpleMatch(tokOffset, "const (")) {
typeEnd = tokOffset;
tokOffset = tokOffset->next();
atEnd = true;
} else
atEnd = true;
}
} else
continue; // invalid input
// check for invalid input
if (!tokOffset) {
syntaxError(tok);
return;
}
// check for template
if (!isC() && tokOffset->str() == "<") {
typeEnd = tokOffset->findClosingBracket();
while (typeEnd && Token::Match(typeEnd->next(), ":: %type%"))
typeEnd = typeEnd->tokAt(2);
if (!typeEnd) {
// internal error
return;
}
while (Token::Match(typeEnd->next(), "const|volatile"))
typeEnd = typeEnd->next();
tok = typeEnd;
tokOffset = tok->next();
}
std::list<std::string> pointers;
// check for pointers and references
while (Token::Match(tokOffset, "*|&|&&|const")) {
pointers.push_back(tokOffset->str());
tokOffset = tokOffset->next();
}
// check for invalid input
if (!tokOffset) {
syntaxError(tok);
return;
}
if (Token::Match(tokOffset, "%type%")) {
// found the type name
typeName = tokOffset;
tokOffset = tokOffset->next();
// check for array
if (tokOffset && tokOffset->str() == "[") {
arrayStart = tokOffset;
bool atEnd = false;
while (!atEnd) {
while (tokOffset->next() && !Token::Match(tokOffset->next(), ";|,")) {
tokOffset = tokOffset->next();
}
if (!tokOffset->next())
return; // invalid input
else if (tokOffset->next()->str() == ";")
atEnd = true;
else if (tokOffset->str() == "]")
atEnd = true;
else
tokOffset = tokOffset->next();
}
arrayEnd = tokOffset;
tokOffset = tokOffset->next();
}
// check for end or another
if (Token::Match(tokOffset, ";|,"))
tok = tokOffset;
// or a function typedef
else if (tokOffset && tokOffset->str() == "(") {
// unhandled typedef, skip it and continue
if (typeName->str() == "void") {
unsupportedTypedef(typeDef);
tok = deleteInvalidTypedef(typeDef);
if (tok == list.front())
//now the next token to process is 'tok', not 'tok->next()';
goback = true;
continue;
}
// function pointer
else if (Token::Match(tokOffset, "( * %name% ) (")) {
// name token wasn't a name, it was part of the type
typeEnd = typeEnd->next();
functionPtr = true;
tokOffset = tokOffset->next();
funcStart = tokOffset;
funcEnd = tokOffset;
tokOffset = tokOffset->tokAt(3);
typeName = tokOffset->tokAt(-2);
argStart = tokOffset;
argEnd = tokOffset->link();
tok = argEnd->next();
}
// function
else if (isFunctionHead(tokOffset->link(), ";,")) {
function = true;
if (tokOffset->link()->next()->str() == "const") {
specStart = tokOffset->link()->next();
specEnd = specStart;
}
argStart = tokOffset;
argEnd = tokOffset->link();
tok = argEnd->next();
if (specStart)
tok = tok->next();
}
// syntax error
else {
syntaxError(tok);
return;
}
}
// unhandled typedef, skip it and continue
else {
unsupportedTypedef(typeDef);
tok = deleteInvalidTypedef(typeDef);
if (tok == list.front())
//now the next token to process is 'tok', not 'tok->next()';
goback = true;
continue;
}
}
// typeof: typedef __typeof__ ( ... ) type;
else if (Token::simpleMatch(tokOffset->previous(), "__typeof__ (") &&
Token::Match(tokOffset->link(), ") %type% ;")) {
argStart = tokOffset;
argEnd = tokOffset->link();
typeName = tokOffset->link()->next();
tok = typeName->next();
typeOf = true;
}
// function: typedef ... ( ... type )( ... );
// typedef ... (( ... type )( ... ));
// typedef ... ( * ( ... type )( ... ));
else if (tokOffset->str() == "(" && (
(tokOffset->link() && Token::Match(tokOffset->link()->previous(), "%type% ) (") &&
Token::Match(tokOffset->link()->next()->link(), ") const|volatile|;")) ||
(Token::simpleMatch(tokOffset, "( (") &&
tokOffset->next() && Token::Match(tokOffset->next()->link()->previous(), "%type% ) (") &&
Token::Match(tokOffset->next()->link()->next()->link(), ") const|volatile| ) ;|,")) ||
(Token::simpleMatch(tokOffset, "( * (") &&
tokOffset->linkAt(2) && Token::Match(tokOffset->linkAt(2)->previous(), "%type% ) (") &&
Token::Match(tokOffset->linkAt(2)->next()->link(), ") const|volatile| ) ;|,")))) {
if (tokOffset->next()->str() == "(")
tokOffset = tokOffset->next();
else if (Token::simpleMatch(tokOffset, "( * (")) {
pointers.push_back("*");
tokOffset = tokOffset->tokAt(2);
}
if (tokOffset->link()->strAt(-2) == "*")
functionPtr = true;
else
function = true;
funcStart = tokOffset->next();
tokOffset = tokOffset->link();
funcEnd = tokOffset->tokAt(-2);
typeName = tokOffset->previous();
argStart = tokOffset->next();
argEnd = tokOffset->next()->link();
if (!argEnd) {
syntaxError(argStart);
return;
}
tok = argEnd->next();
Token *spec = tok;
if (Token::Match(spec, "const|volatile")) {
specStart = spec;
specEnd = spec;
while (Token::Match(spec->next(), "const|volatile")) {
specEnd = spec->next();
spec = specEnd;
}
tok = specEnd->next();
}
if (!tok) {
syntaxError(specEnd);
return;
}
if (tok->str() == ")")
tok = tok->next();
}
else if (Token::Match(tokOffset, "( %type% (")) {
function = true;
if (tokOffset->link()->next()) {
tok = tokOffset->link()->next();
tokOffset = tokOffset->tokAt(2);
typeName = tokOffset->previous();
argStart = tokOffset;
argEnd = tokOffset->link();
} else {
// internal error
continue;
}
}
// pointer to function returning pointer to function
else if (Token::Match(tokOffset, "( * ( * %type% ) (") &&
Token::simpleMatch(tokOffset->linkAt(6), ") ) (") &&
Token::Match(tokOffset->linkAt(6)->linkAt(2), ") ;|,")) {
functionPtrRetFuncPtr = true;
tokOffset = tokOffset->tokAt(6);
typeName = tokOffset->tokAt(-2);
argStart = tokOffset;
argEnd = tokOffset->link();
argFuncRetStart = argEnd->tokAt(2);
argFuncRetEnd = argFuncRetStart->link();
tok = argFuncRetEnd->next();
}
// function returning pointer to function
else if (Token::Match(tokOffset, "( * %type% (") &&
Token::simpleMatch(tokOffset->linkAt(3), ") ) (") &&
Token::Match(tokOffset->linkAt(3)->linkAt(2), ") ;|,")) {
functionRetFuncPtr = true;
tokOffset = tokOffset->tokAt(3);
typeName = tokOffset->previous();
argStart = tokOffset;
argEnd = tokOffset->link();
argFuncRetStart = argEnd->tokAt(2);
argFuncRetEnd = argFuncRetStart->link();
tok = argFuncRetEnd->next();
} else if (Token::Match(tokOffset, "( * ( %type% ) (")) {
functionRetFuncPtr = true;
tokOffset = tokOffset->tokAt(5);
typeName = tokOffset->tokAt(-2);
argStart = tokOffset;
argEnd = tokOffset->link();
argFuncRetStart = argEnd->tokAt(2);
argFuncRetEnd = argFuncRetStart->link();
tok = argFuncRetEnd->next();
}
// pointer/reference to array
else if (Token::Match(tokOffset, "( *|& %type% ) [")) {
ptrToArray = (tokOffset->next()->str() == "*");
refToArray = !ptrToArray;
tokOffset = tokOffset->tokAt(2);
typeName = tokOffset;
arrayStart = tokOffset->tokAt(2);
arrayEnd = arrayStart->link();