9761 lines
360 KiB
C++
9761 lines
360 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2016 Cppcheck team.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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//---------------------------------------------------------------------------
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#include "tokenize.h"
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#include "mathlib.h"
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#include "settings.h"
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#include "check.h"
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#include "path.h"
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#include "symboldatabase.h"
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#include "templatesimplifier.h"
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#include "timer.h"
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#include "utils.h"
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#include <cstring>
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#include <sstream>
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#include <cassert>
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#include <cctype>
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#include <stack>
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#include <iostream>
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//---------------------------------------------------------------------------
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namespace {
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// local struct used in setVarId
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// in order to store information about the scope
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struct VarIdscopeInfo {
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VarIdscopeInfo()
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:isExecutable(false), startVarid(0) {
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}
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VarIdscopeInfo(bool _isExecutable, unsigned int _startVarid)
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:isExecutable(_isExecutable), startVarid(_startVarid) {
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}
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const bool isExecutable;
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const unsigned int startVarid;
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};
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}
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const Token * Tokenizer::isFunctionHead(const Token *tok, const std::string &endsWith) const
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{
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return Tokenizer::isFunctionHead(tok, endsWith, isCPP());
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}
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const Token * Tokenizer::isFunctionHead(const Token *tok, const std::string &endsWith, bool cpp)
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{
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if (!tok)
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return nullptr;
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if (tok->str() == "(")
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tok = tok->link();
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if (Token::Match(tok, ") [;{]")) {
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tok = tok->next();
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if (tok->isName())
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tok = tok->next();
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return (endsWith.find(tok->str()) != std::string::npos) ? tok : nullptr;
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}
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if (cpp && tok->str() == ")") {
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tok = tok->next();
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while (Token::Match(tok, "const|noexcept|override|volatile|&|&& !!(") ||
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(Token::Match(tok, "%name% !!(") && tok->isUpperCaseName()))
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tok = tok->next();
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if (Token::Match(tok, "throw|noexcept ("))
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tok = tok->linkAt(1)->next();
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if (Token::Match(tok, "%name% (") && tok->isUpperCaseName())
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tok = tok->linkAt(1)->next();
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if (Token::Match(tok, "= 0|default|delete ;"))
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tok = tok->tokAt(2);
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return (tok && endsWith.find(tok->str()) != std::string::npos) ? tok : nullptr;
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}
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return nullptr;
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}
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/**
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* is tok the start brace { of a class, struct, union, or enum
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*/
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static bool isClassStructUnionEnumStart(const Token * tok)
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{
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if (!Token::Match(tok->previous(), "class|struct|union|enum|%name%|>|>> {"))
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return false;
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const Token * tok2 = tok->previous();
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while (tok2 && !Token::Match(tok2, "class|struct|union|enum|{|}|;"))
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tok2 = tok2->previous();
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return Token::Match(tok2, "class|struct|union|enum");
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}
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//---------------------------------------------------------------------------
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Tokenizer::Tokenizer() :
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list(0),
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_settings(0),
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_errorLogger(0),
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_symbolDatabase(0),
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_varId(0),
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_codeWithTemplates(false), //is there any templates?
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m_timerResults(nullptr)
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#ifdef MAXTIME
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,maxtime(std::time(0) + MAXTIME)
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#endif
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{
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}
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Tokenizer::Tokenizer(const Settings *settings, ErrorLogger *errorLogger) :
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list(settings),
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_settings(settings),
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_errorLogger(errorLogger),
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_symbolDatabase(0),
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_varId(0),
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_codeWithTemplates(false), //is there any templates?
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m_timerResults(nullptr)
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#ifdef MAXTIME
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,maxtime(std::time(0) + MAXTIME)
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#endif
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{
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// make sure settings are specified
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assert(_settings);
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}
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Tokenizer::~Tokenizer()
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{
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delete _symbolDatabase;
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}
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//---------------------------------------------------------------------------
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// SizeOfType - gives the size of a type
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//---------------------------------------------------------------------------
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unsigned int Tokenizer::sizeOfType(const Token *type) const
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{
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if (!type || type->str().empty())
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return 0;
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if (type->tokType() == Token::eString)
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return Token::getStrLength(type) + 1U;
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std::map<std::string, unsigned int>::const_iterator it = _typeSize.find(type->str());
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if (it == _typeSize.end()) {
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const Library::PodType* podtype = _settings->library.podtype(type->str());
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if (!podtype)
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return 0;
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return podtype->size;
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} else if (type->isLong()) {
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if (type->str() == "double")
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return _settings->sizeof_long_double;
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else if (type->str() == "long")
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return _settings->sizeof_long_long;
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}
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return it->second;
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}
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//---------------------------------------------------------------------------
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Token *Tokenizer::copyTokens(Token *dest, const Token *first, const Token *last, bool one_line)
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{
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std::stack<Token *> links;
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Token *tok2 = dest;
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unsigned int linenrs = dest->linenr();
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const unsigned int commonFileIndex = dest->fileIndex();
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for (const Token *tok = first; tok != last->next(); tok = tok->next()) {
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tok2->insertToken(tok->str());
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tok2 = tok2->next();
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tok2->fileIndex(commonFileIndex);
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tok2->linenr(linenrs);
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tok2->tokType(tok->tokType());
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tok2->flags(tok->flags());
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tok2->varId(tok->varId());
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// Check for links and fix them up
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if (Token::Match(tok2, "(|[|{"))
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links.push(tok2);
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else if (Token::Match(tok2, ")|]|}")) {
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if (links.empty())
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return tok2;
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Token * link = links.top();
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tok2->link(link);
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link->link(tok2);
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links.pop();
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}
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if (!one_line && tok->next())
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linenrs += tok->next()->linenr() - tok->linenr();
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}
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return tok2;
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}
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//---------------------------------------------------------------------------
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// check if this statement is a duplicate definition
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bool Tokenizer::duplicateTypedef(Token **tokPtr, const Token *name, const Token *typeDef) const
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{
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// check for an end of definition
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const Token * tok = *tokPtr;
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if (tok && Token::Match(tok->next(), ";|,|[|=|)|>|(|{")) {
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const Token * end = tok->next();
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if (end->str() == "[") {
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if (!end->link())
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syntaxError(end); // #6680 invalid code
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end = end->link()->next();
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} else if (end->str() == ",") {
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// check for derived class
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if (Token::Match(tok->previous(), "public|private|protected"))
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return false;
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// find end of definition
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while (end && end->next() && !Token::Match(end->next(), ";|)|>")) {
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if (end->next()->str() == "(")
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end = end->linkAt(1);
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end = (end)?end->next():nullptr;
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}
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if (end)
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end = end->next();
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} else if (end->str() == "(") {
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if (tok->previous()->str().find("operator") == 0) {
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// conversion operator
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return false;
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} else if (tok->previous()->str() == "typedef") {
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// typedef of function returning this type
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return false;
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} else if (Token::Match(tok->previous(), "public:|private:|protected:")) {
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return false;
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} else if (tok->previous()->str() == ">") {
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if (!Token::Match(tok->tokAt(-2), "%type%"))
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return false;
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if (!Token::Match(tok->tokAt(-3), ",|<"))
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return false;
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*tokPtr = end->link();
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return true;
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}
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}
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if (end) {
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if (Token::simpleMatch(end, ") {")) { // function parameter ?
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// look backwards
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if (Token::Match(tok->previous(), "%type%") &&
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!Token::Match(tok->previous(), "return|new|const|struct")) {
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// duplicate definition so skip entire function
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*tokPtr = end->next()->link();
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return true;
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}
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} else if (end->str() == ">") { // template parameter ?
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// look backwards
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if (Token::Match(tok->previous(), "%type%") &&
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!Token::Match(tok->previous(), "return|new|const|volatile")) {
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// duplicate definition so skip entire template
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while (end && end->str() != "{")
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end = end->next();
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if (end) {
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*tokPtr = end->link();
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return true;
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}
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}
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} else {
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// look backwards
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if (Token::Match(tok->previous(), "typedef|}|>") ||
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(end->str() == ";" && tok->previous()->str() == ",") ||
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(tok->previous()->str() == "*" && tok->next()->str() != "(") ||
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(Token::Match(tok->previous(), "%type%") &&
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(!Token::Match(tok->previous(), "return|new|const|friend|public|private|protected|throw|extern") &&
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!Token::simpleMatch(tok->tokAt(-2), "friend class")))) {
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// scan backwards for the end of the previous statement
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while (tok && tok->previous() && !Token::Match(tok->previous(), ";|{")) {
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if (tok->previous()->str() == "}") {
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tok = tok->previous()->link();
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} else if (tok->previous()->str() == "typedef") {
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return true;
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} else if (tok->previous()->str() == "enum") {
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return true;
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} else if (tok->previous()->str() == "struct") {
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if (tok->strAt(-2) == "typedef" &&
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tok->next()->str() == "{" &&
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typeDef->strAt(3) != "{") {
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// declaration after forward declaration
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return true;
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} else if (tok->next()->str() == "{") {
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return true;
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} else if (Token::Match(tok->next(), ")|*")) {
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return true;
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} else if (tok->next()->str() == name->str()) {
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return true;
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} else if (tok->next()->str() != ";") {
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return true;
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} else {
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return false;
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}
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} else if (tok->previous()->str() == "union") {
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if (tok->next()->str() != ";") {
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return true;
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} else {
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return false;
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}
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} else if (isCPP() && tok->previous()->str() == "class") {
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if (tok->next()->str() != ";") {
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return true;
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} else {
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return false;
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}
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}
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if (tok)
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tok = tok->previous();
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}
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if ((*tokPtr)->strAt(1) != "(" || !Token::Match((*tokPtr)->linkAt(1), ") .|(|["))
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return true;
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}
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}
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}
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}
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return false;
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}
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void Tokenizer::unsupportedTypedef(const Token *tok) const
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{
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if (!_settings->debugwarnings)
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return;
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std::ostringstream str;
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const Token *tok1 = tok;
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unsigned int level = 0;
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while (tok) {
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if (level == 0 && tok->str() == ";")
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break;
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else if (tok->str() == "{")
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++level;
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else if (tok->str() == "}") {
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if (!level)
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break;
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--level;
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}
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if (tok != tok1)
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str << " ";
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str << tok->str();
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tok = tok->next();
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}
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if (tok)
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str << " ;";
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reportError(tok1, Severity::debug, "debug",
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"Failed to parse \'" + str.str() + "\'. The checking continues anyway.");
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}
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Token * Tokenizer::deleteInvalidTypedef(Token *typeDef)
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{
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Token *tok = nullptr;
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// remove typedef but leave ;
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while (typeDef->next()) {
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if (typeDef->next()->str() == ";") {
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typeDef->deleteNext();
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break;
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} else if (typeDef->next()->str() == "{")
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Token::eraseTokens(typeDef, typeDef->linkAt(1));
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else if (typeDef->next()->str() == "}")
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break;
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typeDef->deleteNext();
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}
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if (typeDef != list.front()) {
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tok = typeDef->previous();
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tok->deleteNext();
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} else {
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list.front()->deleteThis();
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tok = list.front();
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}
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return tok;
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}
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struct Space {
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Space() : classEnd(nullptr), isNamespace(false) { }
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std::string className;
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const Token * classEnd;
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bool isNamespace;
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};
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static Token *splitDefinitionFromTypedef(Token *tok)
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{
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Token *tok1;
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std::string name;
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bool isConst = false;
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if (tok->next()->str() == "const") {
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tok->deleteNext();
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isConst = true;
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}
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if (tok->strAt(2) == "{") { // unnamed
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tok1 = tok->linkAt(2);
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if (tok1 && tok1->next()) {
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// use typedef name if available
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if (Token::Match(tok1->next(), "%type%"))
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name = tok1->next()->str();
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else { // create a unique name
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static unsigned int count = 0;
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name = "Unnamed" + MathLib::toString(count++);
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}
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tok->next()->insertToken(name);
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} else
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return nullptr;
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} else if (tok->strAt(3) == ":") {
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tok1 = tok->tokAt(4);
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while (tok1 && tok1->str() != "{")
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tok1 = tok1->next();
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if (!tok1)
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return nullptr;
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tok1 = tok1->link();
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name = tok->strAt(2);
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} else { // has a name
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tok1 = tok->linkAt(3);
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if (!tok1)
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return nullptr;
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name = tok->strAt(2);
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}
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tok1->insertToken(";");
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tok1 = tok1->next();
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if (tok1->next() && tok1->next()->str() == ";" && tok1->previous()->str() == "}") {
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tok->deleteThis();
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tok1->deleteThis();
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return nullptr;
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} else {
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tok1->insertToken("typedef");
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tok1 = tok1->next();
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Token * tok3 = tok1;
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if (isConst) {
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tok1->insertToken("const");
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tok1 = tok1->next();
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}
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tok1->insertToken(tok->next()->str()); // struct, union or enum
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tok1 = tok1->next();
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tok1->insertToken(name);
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tok->deleteThis();
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tok = tok3;
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}
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return tok;
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}
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/* This function is called when processing function related typedefs.
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* If simplifyTypedef generates an "Internal Error" message and the
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* code that generated it deals in some way with functions, then this
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* function will probably need to be extended to handle a new function
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* related pattern */
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Token *Tokenizer::processFunc(Token *tok2, bool inOperator) const
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{
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if (tok2->next() && tok2->next()->str() != ")" &&
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tok2->next()->str() != ",") {
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// skip over tokens for some types of canonicalization
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if (Token::Match(tok2->next(), "( * %type% ) ("))
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tok2 = tok2->linkAt(5);
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else if (Token::Match(tok2->next(), "* ( * %type% ) ("))
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tok2 = tok2->linkAt(6);
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else if (Token::Match(tok2->next(), "* ( * %type% ) ;"))
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tok2 = tok2->tokAt(5);
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else if (Token::Match(tok2->next(), "* ( %type% [") &&
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Token::Match(tok2->linkAt(4), "] ) ;|="))
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tok2 = tok2->linkAt(4)->next();
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else if (Token::Match(tok2->next(), "* ( * %type% ("))
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tok2 = tok2->linkAt(5)->next();
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else if (Token::simpleMatch(tok2->next(), "* [") &&
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Token::simpleMatch(tok2->linkAt(2), "] ;"))
|
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tok2 = tok2->next();
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else {
|
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if (tok2->next()->str() == "(")
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tok2 = tok2->next()->link();
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else if (!inOperator && !Token::Match(tok2->next(), "[|>|;")) {
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tok2 = tok2->next();
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while (Token::Match(tok2, "*|&") &&
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!Token::Match(tok2->next(), ")|>"))
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tok2 = tok2->next();
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// skip over namespace
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while (Token::Match(tok2, "%name% ::"))
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tok2 = tok2->tokAt(2);
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|
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if (!tok2)
|
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return nullptr;
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|
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if (tok2->str() == "(" &&
|
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tok2->link()->next() &&
|
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tok2->link()->next()->str() == "(") {
|
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tok2 = tok2->link();
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if (tok2->next()->str() == "(")
|
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tok2 = tok2->next()->link();
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}
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|
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// skip over typedef parameter
|
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if (tok2->next() && tok2->next()->str() == "(") {
|
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tok2 = tok2->next()->link();
|
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if (!tok2->next())
|
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syntaxError(tok2);
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|
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if (tok2->next()->str() == "(")
|
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tok2 = tok2->next()->link();
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}
|
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}
|
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}
|
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}
|
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return tok2;
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}
|
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|
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void Tokenizer::simplifyTypedef()
|
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{
|
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std::vector<Space> spaceInfo;
|
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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;
|
|
|
|
if (isMaxTime())
|
|
return;
|
|
|
|
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()->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);
|
|
|
|
|
|
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|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);
|
|
|
|
// 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);
|
|
|
|
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);
|
|
}
|
|
|
|
// 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);
|
|
|
|
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);
|
|
|
|
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();
|
|
if (!argEnd)
|
|
syntaxError(arrayStart);
|
|
|
|
argFuncRetStart = argEnd->tokAt(2);
|
|
argFuncRetEnd = argFuncRetStart->link();
|
|
if (!argFuncRetEnd)
|
|
syntaxError(argFuncRetStart);
|
|
|
|
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);
|
|
if (!argFuncRetStart)
|
|
syntaxError(tokOffset);
|
|
|
|
argFuncRetEnd = argFuncRetStart->link();
|
|
if (!argFuncRetEnd)
|
|
syntaxError(tokOffset);
|
|
|
|
tok = argFuncRetEnd->next();
|
|
} else if (Token::Match(tokOffset, "( * ( %type% ) (")) {
|
|
functionRetFuncPtr = true;
|
|
|
|
tokOffset = tokOffset->tokAt(5);
|
|
typeName = tokOffset->tokAt(-2);
|
|
argStart = tokOffset;
|
|
argEnd = tokOffset->link();
|
|
if (!argEnd)
|
|
syntaxError(arrayStart);
|
|
|
|
argFuncRetStart = argEnd->tokAt(2);
|
|
if (!argFuncRetStart)
|
|
syntaxError(tokOffset);
|
|
|
|
argFuncRetEnd = argFuncRetStart->link();
|
|
if (!argFuncRetEnd)
|
|
syntaxError(tokOffset);
|
|
|
|
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();
|
|
if (!arrayEnd)
|
|
syntaxError(arrayStart);
|
|
|
|
tok = arrayEnd->next();
|
|
}
|
|
|
|
// pointer to class member
|
|
else if (Token::Match(tokOffset, "( %type% :: * %type% ) ;")) {
|
|
tokOffset = tokOffset->tokAt(2);
|
|
namespaceStart = tokOffset->previous();
|
|
namespaceEnd = tokOffset;
|
|
ptrMember = true;
|
|
tokOffset = tokOffset->tokAt(2);
|
|
typeName = tokOffset;
|
|
tok = tokOffset->tokAt(2);
|
|
}
|
|
|
|
// 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;
|
|
}
|
|
|
|
bool done = false;
|
|
bool ok = true;
|
|
|
|
while (!done) {
|
|
std::string pattern = typeName->str();
|
|
unsigned int scope = 0;
|
|
bool simplifyType = false;
|
|
bool inMemberFunc = false;
|
|
int memberScope = 0;
|
|
bool globalScope = false;
|
|
std::size_t classLevel = spaceInfo.size();
|
|
|
|
for (Token *tok2 = tok; tok2; tok2 = tok2->next()) {
|
|
if (_settings->terminated())
|
|
return;
|
|
|
|
if (tok2->link()) { // Pre-check for performance
|
|
// check for end of scope
|
|
if (tok2->str() == "}") {
|
|
// check for end of member function
|
|
if (inMemberFunc) {
|
|
--memberScope;
|
|
if (memberScope == 0)
|
|
inMemberFunc = false;
|
|
}
|
|
|
|
if (classLevel > 0 && tok2 == spaceInfo[classLevel - 1].classEnd) {
|
|
--classLevel;
|
|
pattern.clear();
|
|
|
|
for (std::size_t i = classLevel; i < spaceInfo.size(); ++i)
|
|
pattern += (spaceInfo[i].className + " :: ");
|
|
|
|
pattern += typeName->str();
|
|
} else {
|
|
if (scope == 0)
|
|
break;
|
|
--scope;
|
|
}
|
|
}
|
|
|
|
// check for member functions
|
|
else if (isCPP() && Token::Match(tok2, ") const| {")) {
|
|
const Token *func = tok2->link()->previous();
|
|
if (!func || !func->previous()) // Ticket #4239
|
|
continue;
|
|
|
|
/** @todo add support for multi-token operators */
|
|
if (func->previous()->str() == "operator")
|
|
func = func->previous();
|
|
|
|
if (!func->previous()) // #7020
|
|
syntaxError(func);
|
|
|
|
// check for qualifier
|
|
if (func->previous()->str() == "::") {
|
|
// check for available and matching class name
|
|
if (!spaceInfo.empty() && classLevel < spaceInfo.size() &&
|
|
func->strAt(-2) == spaceInfo[classLevel].className) {
|
|
memberScope = 0;
|
|
inMemberFunc = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// check for entering a new scope
|
|
else if (tok2->str() == "{") {
|
|
// check for entering a new namespace
|
|
if (isCPP() && tok2->strAt(-2) == "namespace") {
|
|
if (classLevel < spaceInfo.size() &&
|
|
spaceInfo[classLevel].isNamespace &&
|
|
spaceInfo[classLevel].className == tok2->previous()->str()) {
|
|
++classLevel;
|
|
pattern.clear();
|
|
for (std::size_t i = classLevel; i < spaceInfo.size(); ++i)
|
|
pattern += (spaceInfo[i].className + " :: ");
|
|
|
|
pattern += typeName->str();
|
|
}
|
|
++scope;
|
|
}
|
|
|
|
// keep track of scopes within member function
|
|
if (inMemberFunc)
|
|
++memberScope;
|
|
|
|
++scope;
|
|
}
|
|
}
|
|
|
|
// check for operator typedef
|
|
/** @todo add support for multi-token operators */
|
|
else if (isCPP() &&
|
|
tok2->str() == "operator" &&
|
|
tok2->next() &&
|
|
tok2->next()->str() == typeName->str() &&
|
|
tok2->linkAt(2) &&
|
|
tok2->strAt(2) == "(" &&
|
|
Token::Match(tok2->linkAt(2), ") const| {")) {
|
|
// check for qualifier
|
|
if (tok2->previous()->str() == "::") {
|
|
// check for available and matching class name
|
|
if (!spaceInfo.empty() && classLevel < spaceInfo.size() &&
|
|
tok2->strAt(-2) == spaceInfo[classLevel].className) {
|
|
tok2 = tok2->next();
|
|
simplifyType = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// check for typedef that can be substituted
|
|
else if (Token::simpleMatch(tok2, pattern.c_str()) ||
|
|
(inMemberFunc && tok2->str() == typeName->str())) {
|
|
|
|
// member function class variables don't need qualification
|
|
if (!(inMemberFunc && tok2->str() == typeName->str()) && pattern.find("::") != std::string::npos) { // has a "something ::"
|
|
Token *start = tok2;
|
|
std::size_t count = 0;
|
|
int back = int(classLevel) - 1;
|
|
bool good = true;
|
|
// check for extra qualification
|
|
while (back >= 0 && Token::Match(start->tokAt(-2), "%type% ::")) {
|
|
if (start->strAt(-2) == spaceInfo[back].className) {
|
|
start = start->tokAt(-2);
|
|
back--;
|
|
count++;
|
|
} else {
|
|
good = false;
|
|
break;
|
|
}
|
|
}
|
|
// check global namespace
|
|
if (good && back == 0 && start->strAt(-1) == "::")
|
|
good = false;
|
|
|
|
if (good) {
|
|
// remove any extra qualification if present
|
|
while (count) {
|
|
tok2->tokAt(-3)->deleteNext(2);
|
|
--count;
|
|
}
|
|
|
|
// remove global namespace if present
|
|
if (tok2->strAt(-1) == "::") {
|
|
tok2->tokAt(-2)->deleteNext();
|
|
globalScope = true;
|
|
}
|
|
|
|
// remove qualification if present
|
|
for (std::size_t i = classLevel; i < spaceInfo.size(); ++i) {
|
|
tok2->deleteNext(2);
|
|
}
|
|
simplifyType = true;
|
|
}
|
|
} else {
|
|
if (tok2->strAt(-1) == "::") {
|
|
// Don't replace this typename if it's preceded by "::" unless it's a namespace
|
|
if (!spaceInfo.empty() && (tok2->strAt(-2) == spaceInfo[0].className) && spaceInfo[0].isNamespace) {
|
|
tok2->tokAt(-3)->deleteNext(2);
|
|
simplifyType = true;
|
|
}
|
|
} else if (Token::Match(tok2->previous(), "case|;|{|} %type% :")) {
|
|
tok2 = tok2->next();
|
|
} else if (duplicateTypedef(&tok2, typeName, typeDef)) {
|
|
// skip to end of scope if not already there
|
|
if (tok2->str() != "}") {
|
|
while (tok2->next()) {
|
|
if (tok2->next()->str() == "{")
|
|
tok2 = tok2->linkAt(1)->previous();
|
|
else if (tok2->next()->str() == "}")
|
|
break;
|
|
|
|
tok2 = tok2->next();
|
|
}
|
|
}
|
|
} else if (Token::Match(tok2->tokAt(-2), "%type% *|&")) {
|
|
// Ticket #5868: Don't substitute variable names
|
|
} else if (tok2->previous()->str() != ".") {
|
|
simplifyType = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (simplifyType) {
|
|
// can't simplify 'operator functionPtr ()' and 'functionPtr operator ... ()'
|
|
if (functionPtr && (tok2->previous()->str() == "operator" ||
|
|
(tok2->next() && tok2->next()->str() == "operator"))) {
|
|
simplifyType = false;
|
|
tok2 = tok2->next();
|
|
continue;
|
|
}
|
|
|
|
// There are 2 categories of typedef substitutions:
|
|
// 1. variable declarations that preserve the variable name like
|
|
// global, local, and function parameters
|
|
// 2. not variable declarations that have no name like derived
|
|
// classes, casts, operators, and template parameters
|
|
|
|
// try to determine which category this substitution is
|
|
bool inCast = false;
|
|
bool inTemplate = false;
|
|
bool inOperator = false;
|
|
bool inSizeof = false;
|
|
|
|
const bool sameStartEnd = (typeStart == typeEnd);
|
|
|
|
// check for derived class: class A : some_typedef {
|
|
const bool isDerived = Token::Match(tok2->previous(), "public|protected|private %type% {|,");
|
|
|
|
// check for cast: (some_typedef) A or static_cast<some_typedef>(A)
|
|
// todo: check for more complicated casts like: (const some_typedef *)A
|
|
if ((tok2->previous()->str() == "(" && tok2->next()->str() == ")" && tok2->strAt(-2) != "sizeof") ||
|
|
(tok2->previous()->str() == "<" && Token::simpleMatch(tok2->next(), "> (")))
|
|
inCast = true;
|
|
|
|
// check for template parameters: t<some_typedef> t1
|
|
else if (Token::Match(tok2->previous(), "<|,") &&
|
|
Token::Match(tok2->next(), "&|*| &|*| >|,"))
|
|
inTemplate = true;
|
|
|
|
else if (Token::Match(tok2->tokAt(-2), "sizeof ( %type% )"))
|
|
inSizeof = true;
|
|
|
|
// check for operator
|
|
if (tok2->strAt(-1) == "operator" ||
|
|
Token::simpleMatch(tok2->tokAt(-2), "operator const"))
|
|
inOperator = true;
|
|
|
|
if (typeStart->str() == "typename" && tok2->strAt(-1)=="typename") {
|
|
// Remove one typename if it is already contained in the goal
|
|
typeStart = typeStart->next();
|
|
}
|
|
|
|
// skip over class or struct in derived class declaration
|
|
bool structRemoved = false;
|
|
if (isDerived && Token::Match(typeStart, "class|struct")) {
|
|
if (typeStart->str() == "struct")
|
|
structRemoved = true;
|
|
typeStart = typeStart->next();
|
|
}
|
|
if (typeStart->str() == "struct" && Token::Match(tok2, "%name% ::"))
|
|
typeStart = typeStart->next();
|
|
|
|
if (sameStartEnd)
|
|
typeEnd = typeStart;
|
|
|
|
// start substituting at the typedef name by replacing it with the type
|
|
tok2->str(typeStart->str());
|
|
|
|
// restore qualification if it was removed
|
|
if (typeStart->str() == "struct" || structRemoved) {
|
|
if (structRemoved)
|
|
tok2 = tok2->previous();
|
|
|
|
if (globalScope) {
|
|
tok2->insertToken("::");
|
|
tok2 = tok2->next();
|
|
}
|
|
|
|
for (std::size_t i = classLevel; i < spaceInfo.size(); ++i) {
|
|
tok2->insertToken(spaceInfo[i].className);
|
|
tok2 = tok2->next();
|
|
tok2->insertToken("::");
|
|
tok2 = tok2->next();
|
|
}
|
|
}
|
|
|
|
// add remainder of type
|
|
tok2 = copyTokens(tok2, typeStart->next(), typeEnd);
|
|
|
|
if (!pointers.empty()) {
|
|
for (std::list<std::string>::const_iterator iter = pointers.begin(); iter != pointers.end(); ++iter) {
|
|
tok2->insertToken(*iter);
|
|
tok2 = tok2->next();
|
|
}
|
|
}
|
|
|
|
if (funcStart && funcEnd) {
|
|
tok2->insertToken("(");
|
|
tok2 = tok2->next();
|
|
Token *tok3 = tok2;
|
|
tok2 = copyTokens(tok2, funcStart, funcEnd);
|
|
|
|
if (!inCast)
|
|
tok2 = processFunc(tok2, inOperator);
|
|
|
|
if (!tok2)
|
|
break;
|
|
|
|
tok2->insertToken(")");
|
|
tok2 = tok2->next();
|
|
Token::createMutualLinks(tok2, tok3);
|
|
|
|
tok2 = copyTokens(tok2, argStart, argEnd);
|
|
|
|
if (specStart) {
|
|
Token *spec = specStart;
|
|
tok2->insertToken(spec->str());
|
|
tok2 = tok2->next();
|
|
while (spec != specEnd) {
|
|
spec = spec->next();
|
|
tok2->insertToken(spec->str());
|
|
tok2 = tok2->next();
|
|
}
|
|
}
|
|
}
|
|
|
|
else if (functionPtr || functionRef || function) {
|
|
// don't add parentheses around function names because it
|
|
// confuses other simplifications
|
|
bool needParen = true;
|
|
if (!inTemplate && function && tok2->next() && tok2->next()->str() != "*")
|
|
needParen = false;
|
|
if (needParen) {
|
|
tok2->insertToken("(");
|
|
tok2 = tok2->next();
|
|
}
|
|
Token *tok3 = tok2;
|
|
if (namespaceStart) {
|
|
const Token *tok4 = namespaceStart;
|
|
|
|
while (tok4 != namespaceEnd) {
|
|
tok2->insertToken(tok4->str());
|
|
tok2 = tok2->next();
|
|
tok4 = tok4->next();
|
|
}
|
|
tok2->insertToken(namespaceEnd->str());
|
|
tok2 = tok2->next();
|
|
}
|
|
if (functionPtr) {
|
|
tok2->insertToken("*");
|
|
tok2 = tok2->next();
|
|
} else if (functionRef) {
|
|
tok2->insertToken("&");
|
|
tok2 = tok2->next();
|
|
}
|
|
|
|
if (!inCast)
|
|
tok2 = processFunc(tok2, inOperator);
|
|
|
|
if (needParen) {
|
|
if (!tok2)
|
|
syntaxError(nullptr);
|
|
|
|
tok2->insertToken(")");
|
|
tok2 = tok2->next();
|
|
Token::createMutualLinks(tok2, tok3);
|
|
}
|
|
if (!tok2)
|
|
syntaxError(nullptr);
|
|
|
|
tok2 = copyTokens(tok2, argStart, argEnd);
|
|
if (inTemplate) {
|
|
if (!tok2)
|
|
syntaxError(nullptr);
|
|
|
|
tok2 = tok2->next();
|
|
}
|
|
|
|
if (specStart) {
|
|
Token *spec = specStart;
|
|
tok2->insertToken(spec->str());
|
|
tok2 = tok2->next();
|
|
while (spec != specEnd) {
|
|
spec = spec->next();
|
|
tok2->insertToken(spec->str());
|
|
tok2 = tok2->next();
|
|
}
|
|
}
|
|
} else if (functionRetFuncPtr || functionPtrRetFuncPtr) {
|
|
tok2->insertToken("(");
|
|
tok2 = tok2->next();
|
|
Token *tok3 = tok2;
|
|
tok2->insertToken("*");
|
|
tok2 = tok2->next();
|
|
|
|
Token * tok4 = nullptr;
|
|
if (functionPtrRetFuncPtr) {
|
|
tok2->insertToken("(");
|
|
tok2 = tok2->next();
|
|
tok4 = tok2;
|
|
tok2->insertToken("*");
|
|
tok2 = tok2->next();
|
|
}
|
|
|
|
// skip over variable name if there
|
|
if (!inCast) {
|
|
if (!tok2 || !tok2->next())
|
|
syntaxError(nullptr);
|
|
|
|
if (tok2->next()->str() != ")")
|
|
tok2 = tok2->next();
|
|
}
|
|
|
|
if (tok4 && functionPtrRetFuncPtr) {
|
|
tok2->insertToken(")");
|
|
tok2 = tok2->next();
|
|
Token::createMutualLinks(tok2, tok4);
|
|
}
|
|
|
|
tok2 = copyTokens(tok2, argStart, argEnd);
|
|
|
|
tok2->insertToken(")");
|
|
tok2 = tok2->next();
|
|
Token::createMutualLinks(tok2, tok3);
|
|
|
|
tok2 = copyTokens(tok2, argFuncRetStart, argFuncRetEnd);
|
|
} else if (ptrToArray || refToArray) {
|
|
tok2->insertToken("(");
|
|
tok2 = tok2->next();
|
|
Token *tok3 = tok2;
|
|
|
|
if (ptrToArray)
|
|
tok2->insertToken("*");
|
|
else
|
|
tok2->insertToken("&");
|
|
tok2 = tok2->next();
|
|
|
|
// skip over name
|
|
if (tok2->next() && tok2->next()->str() != ")") {
|
|
if (tok2->next()->str() != "(")
|
|
tok2 = tok2->next();
|
|
|
|
// check for function and skip over args
|
|
if (tok2 && tok2->next() && tok2->next()->str() == "(")
|
|
tok2 = tok2->next()->link();
|
|
|
|
// check for array
|
|
if (tok2 && tok2->next() && tok2->next()->str() == "[")
|
|
tok2 = tok2->next()->link();
|
|
} else {
|
|
// syntax error
|
|
}
|
|
|
|
tok2->insertToken(")");
|
|
Token::createMutualLinks(tok2->next(), tok3);
|
|
} else if (ptrMember) {
|
|
if (Token::simpleMatch(tok2, "* (")) {
|
|
tok2->insertToken("*");
|
|
tok2 = tok2->next();
|
|
} else {
|
|
// This is the case of casting operator.
|
|
// Name is not available, and () should not be
|
|
// inserted
|
|
const bool castOperator = inOperator && Token::Match(tok2, "%type% (");
|
|
Token *tok3;
|
|
|
|
if (!castOperator) {
|
|
tok2->insertToken("(");
|
|
tok2 = tok2->next();
|
|
|
|
tok3 = tok2;
|
|
}
|
|
|
|
const Token *tok4 = namespaceStart;
|
|
|
|
while (tok4 != namespaceEnd) {
|
|
tok2->insertToken(tok4->str());
|
|
tok2 = tok2->next();
|
|
tok4 = tok4->next();
|
|
}
|
|
tok2->insertToken(namespaceEnd->str());
|
|
tok2 = tok2->next();
|
|
|
|
tok2->insertToken("*");
|
|
tok2 = tok2->next();
|
|
|
|
if (!castOperator) {
|
|
// skip over name
|
|
tok2 = tok2->next();
|
|
|
|
tok2->insertToken(")");
|
|
tok2 = tok2->next();
|
|
|
|
Token::createMutualLinks(tok2, tok3);
|
|
}
|
|
}
|
|
} else if (typeOf) {
|
|
tok2 = copyTokens(tok2, argStart, argEnd);
|
|
} else if (tok2->strAt(2) == "[") {
|
|
do {
|
|
if (!tok2->linkAt(2))
|
|
syntaxError(tok2); // #6807
|
|
|
|
tok2 = tok2->linkAt(2)->previous();
|
|
} while (tok2->strAt(2) == "[");
|
|
}
|
|
|
|
if (arrayStart && arrayEnd) {
|
|
do {
|
|
if (!tok2->next())
|
|
syntaxError(tok2); // can't recover so quit
|
|
|
|
if (!inCast && !inSizeof)
|
|
tok2 = tok2->next();
|
|
|
|
// reference to array?
|
|
if (tok2->str() == "&") {
|
|
tok2 = tok2->previous();
|
|
tok2->insertToken("(");
|
|
Token *tok3 = tok2->next();
|
|
|
|
// handle missing variable name
|
|
if (tok2->strAt(3) == ")" || tok2->strAt(3) == ",")
|
|
tok2 = tok2->tokAt(2);
|
|
else
|
|
tok2 = tok2->tokAt(3);
|
|
if (!tok2)
|
|
syntaxError(nullptr);
|
|
|
|
tok2->insertToken(")");
|
|
tok2 = tok2->next();
|
|
Token::createMutualLinks(tok2, tok3);
|
|
}
|
|
|
|
if (!tok2->next())
|
|
syntaxError(tok2); // can't recover so quit
|
|
|
|
tok2 = copyTokens(tok2, arrayStart, arrayEnd);
|
|
if (!tok2->next())
|
|
syntaxError(tok2);
|
|
|
|
tok2 = tok2->next();
|
|
|
|
if (tok2->str() == "=") {
|
|
if (!tok2->next())
|
|
syntaxError(tok2);
|
|
if (tok2->next()->str() == "{")
|
|
tok2 = tok2->next()->link()->next();
|
|
else if (tok2->next()->str().at(0) == '\"')
|
|
tok2 = tok2->tokAt(2);
|
|
}
|
|
} while (Token::Match(tok2, ", %name% ;|=|,"));
|
|
}
|
|
|
|
simplifyType = false;
|
|
}
|
|
if (!tok2)
|
|
break;
|
|
}
|
|
|
|
if (!tok)
|
|
syntaxError(nullptr);
|
|
|
|
if (tok->str() == ";")
|
|
done = true;
|
|
else if (tok->str() == ",") {
|
|
arrayStart = nullptr;
|
|
arrayEnd = nullptr;
|
|
tokOffset = tok->next();
|
|
pointers.clear();
|
|
|
|
while (Token::Match(tokOffset, "*|&")) {
|
|
pointers.push_back(tokOffset->str());
|
|
tokOffset = tokOffset->next();
|
|
}
|
|
|
|
if (Token::Match(tokOffset, "%type%")) {
|
|
typeName = tokOffset;
|
|
tokOffset = tokOffset->next();
|
|
|
|
if (tokOffset && tokOffset->str() == "[") {
|
|
arrayStart = tokOffset;
|
|
|
|
for (;;) {
|
|
while (tokOffset->next() && !Token::Match(tokOffset->next(), ";|,"))
|
|
tokOffset = tokOffset->next();
|
|
|
|
if (!tokOffset->next())
|
|
return; // invalid input
|
|
else if (tokOffset->next()->str() == ";")
|
|
break;
|
|
else if (tokOffset->str() == "]")
|
|
break;
|
|
else
|
|
tokOffset = tokOffset->next();
|
|
}
|
|
|
|
arrayEnd = tokOffset;
|
|
tokOffset = tokOffset->next();
|
|
}
|
|
|
|
if (Token::Match(tokOffset, ";|,"))
|
|
tok = tokOffset;
|
|
else {
|
|
// we encountered a typedef we don't support yet so just continue
|
|
done = true;
|
|
ok = false;
|
|
}
|
|
} else {
|
|
// we encountered a typedef we don't support yet so just continue
|
|
done = true;
|
|
ok = false;
|
|
}
|
|
} else {
|
|
// something is really wrong (internal error)
|
|
done = true;
|
|
ok = false;
|
|
}
|
|
}
|
|
|
|
if (ok) {
|
|
// remove typedef
|
|
Token::eraseTokens(typeDef, tok);
|
|
|
|
if (typeDef != list.front()) {
|
|
tok = typeDef->previous();
|
|
tok->deleteNext();
|
|
//no need to remove last token in the list
|
|
if (tok->tokAt(2))
|
|
tok->deleteNext();
|
|
} else {
|
|
list.front()->deleteThis();
|
|
//no need to remove last token in the list
|
|
if (list.front()->next())
|
|
list.front()->deleteThis();
|
|
tok = list.front();
|
|
//now the next token to process is 'tok', not 'tok->next()';
|
|
goback = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyMulAndParens()
|
|
{
|
|
if (!list.front())
|
|
return;
|
|
for (Token *tok = list.front()->tokAt(3); tok; tok = tok->next()) {
|
|
if (tok->isName()) {
|
|
//fix ticket #2784 - improved by ticket #3184
|
|
unsigned int closedpars = 0;
|
|
Token *tokend = tok->next();
|
|
Token *tokbegin = tok->previous();
|
|
while (tokend && tokend->str() == ")") {
|
|
++closedpars;
|
|
tokend = tokend->next();
|
|
}
|
|
if (!tokend || !(tokend->isAssignmentOp()))
|
|
continue;
|
|
while (Token::Match(tokbegin, "&|(")) {
|
|
if (tokbegin->str() == "&") {
|
|
if (Token::Match(tokbegin->tokAt(-2), "[;{}&(] *")) {
|
|
//remove '* &'
|
|
tokbegin = tokbegin->tokAt(-2);
|
|
tokbegin->deleteNext(2);
|
|
} else if (Token::Match(tokbegin->tokAt(-3), "[;{}&(] * (")) {
|
|
if (!closedpars)
|
|
break;
|
|
--closedpars;
|
|
//remove ')'
|
|
tok->deleteNext();
|
|
//remove '* ( &'
|
|
tokbegin = tokbegin->tokAt(-3);
|
|
tokbegin->deleteNext(3);
|
|
} else
|
|
break;
|
|
} else if (tokbegin->str() == "(") {
|
|
if (!closedpars)
|
|
break;
|
|
|
|
//find consecutive opening parentheses
|
|
unsigned int openpars = 0;
|
|
while (tokbegin && tokbegin->str() == "(" && openpars <= closedpars) {
|
|
++openpars;
|
|
tokbegin = tokbegin->previous();
|
|
}
|
|
if (!tokbegin || openpars > closedpars)
|
|
break;
|
|
|
|
if ((openpars == closedpars && Token::Match(tokbegin, "[;{}]")) ||
|
|
Token::Match(tokbegin->tokAt(-2), "[;{}&(] * &") ||
|
|
Token::Match(tokbegin->tokAt(-3), "[;{}&(] * ( &")) {
|
|
//remove the excessive parentheses around the variable
|
|
while (openpars) {
|
|
tok->deleteNext();
|
|
tokbegin->deleteNext();
|
|
--closedpars;
|
|
--openpars;
|
|
}
|
|
} else
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool Tokenizer::createTokens(std::istream &code,
|
|
const std::string& FileName)
|
|
{
|
|
// make sure settings specified
|
|
assert(_settings);
|
|
|
|
return list.createTokens(code, Path::getRelativePath(Path::simplifyPath(FileName), _settings->basePaths));
|
|
}
|
|
|
|
bool Tokenizer::simplifyTokens1(const std::string &configuration,
|
|
bool noSymbolDB_AST)
|
|
{
|
|
// Fill the map _typeSize..
|
|
fillTypeSizes();
|
|
|
|
_configuration = configuration;
|
|
|
|
if (simplifyTokenList1(list.getFiles()[0].c_str())) {
|
|
if (!noSymbolDB_AST) {
|
|
list.createAst();
|
|
list.validateAst();
|
|
|
|
createSymbolDatabase();
|
|
|
|
// Use symbol database to identify rvalue references. Split && to & &. This is safe, since it doesn't delete any tokens (which might be referenced by symbol database)
|
|
for (std::size_t i = 0; i < _symbolDatabase->getVariableListSize(); i++) {
|
|
const Variable* var = _symbolDatabase->getVariableFromVarId(i);
|
|
if (var && var->isRValueReference()) {
|
|
Token* endTok = const_cast<Token*>(var->typeEndToken());
|
|
endTok->str("&");
|
|
endTok->astOperand1(nullptr);
|
|
endTok->astOperand2(nullptr);
|
|
endTok->insertToken("&");
|
|
endTok->next()->scope(endTok->scope());
|
|
}
|
|
}
|
|
|
|
SymbolDatabase::setValueTypeInTokenList(list.front(), isCPP(), _settings->defaultSign, &_settings->library);
|
|
ValueFlow::setValues(&list, _symbolDatabase, _errorLogger, _settings);
|
|
}
|
|
|
|
printDebugOutput(1);
|
|
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool Tokenizer::tokenize(std::istream &code,
|
|
const char FileName[],
|
|
const std::string &configuration,
|
|
bool noSymbolDB_AST)
|
|
{
|
|
if (!createTokens(code, FileName))
|
|
return false;
|
|
|
|
return simplifyTokens1(configuration, noSymbolDB_AST);
|
|
}
|
|
//---------------------------------------------------------------------------
|
|
|
|
bool Tokenizer::tokenizeCondition(const std::string &code)
|
|
{
|
|
assert(_settings);
|
|
|
|
// Fill the map _typeSize..
|
|
fillTypeSizes();
|
|
|
|
{
|
|
std::istringstream istr(code);
|
|
if (!list.createTokens(istr))
|
|
cppcheckError(nullptr);
|
|
}
|
|
|
|
// Combine strings
|
|
combineStrings();
|
|
|
|
// Remove "volatile", "inline", "register", and "restrict"
|
|
simplifyKeyword();
|
|
|
|
// Concatenate double sharp: 'a ## b' -> 'ab'
|
|
concatenateDoubleSharp();
|
|
|
|
// Link brackets (, [ and {
|
|
createLinks();
|
|
|
|
// Order keywords "static" and "const"
|
|
simplifyStaticConst();
|
|
|
|
// convert platform dependent types to standard types
|
|
// 32 bits: size_t -> unsigned long
|
|
// 64 bits: size_t -> unsigned long long
|
|
simplifyPlatformTypes();
|
|
|
|
// collapse compound standard types into a single token
|
|
// unsigned long long int => long (with _isUnsigned=true,_isLong=true)
|
|
simplifyStdType();
|
|
|
|
// replace 'NULL' and similar '0'-defined macros with '0'
|
|
simplifyNull();
|
|
|
|
// combine "- %num%"
|
|
concatenateNegativeNumberAndAnyPositive();
|
|
|
|
// simplify simple calculations
|
|
for (Token *tok = list.front() ? list.front()->next() : nullptr;
|
|
tok;
|
|
tok = tok->next()) {
|
|
if (tok->isNumber())
|
|
TemplateSimplifier::simplifyNumericCalculations(tok->previous());
|
|
}
|
|
|
|
combineOperators();
|
|
|
|
simplifyRedundantParentheses();
|
|
for (Token *tok = list.front();
|
|
tok;
|
|
tok = tok->next())
|
|
while (TemplateSimplifier::simplifyNumericCalculations(tok))
|
|
;
|
|
|
|
simplifyCAlternativeTokens();
|
|
|
|
simplifyDoublePlusAndDoubleMinus();
|
|
|
|
return true;
|
|
}
|
|
|
|
void Tokenizer::findComplicatedSyntaxErrorsInTemplates()
|
|
{
|
|
validate();
|
|
TemplateSimplifier::checkComplicatedSyntaxErrorsInTemplates(list.front());
|
|
}
|
|
|
|
void Tokenizer::checkForEnumsWithTypedef()
|
|
{
|
|
for (const Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "enum %name% {")) {
|
|
tok = tok->tokAt(2);
|
|
const Token *tok2 = Token::findsimplematch(tok, "typedef", tok->link());
|
|
if (tok2)
|
|
syntaxError(tok2);
|
|
tok = tok->link();
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::fillTypeSizes()
|
|
{
|
|
_typeSize.clear();
|
|
_typeSize["char"] = 1;
|
|
_typeSize["char16_t"] = 2;
|
|
_typeSize["char32_t"] = 4;
|
|
_typeSize["bool"] = _settings->sizeof_bool;
|
|
_typeSize["short"] = _settings->sizeof_short;
|
|
_typeSize["int"] = _settings->sizeof_int;
|
|
_typeSize["long"] = _settings->sizeof_long;
|
|
_typeSize["float"] = _settings->sizeof_float;
|
|
_typeSize["double"] = _settings->sizeof_double;
|
|
_typeSize["wchar_t"] = _settings->sizeof_wchar_t;
|
|
_typeSize["size_t"] = _settings->sizeof_size_t;
|
|
_typeSize["*"] = _settings->sizeof_pointer;
|
|
}
|
|
|
|
void Tokenizer::combineOperators()
|
|
{
|
|
const bool cpp = isCPP();
|
|
|
|
// Combine tokens..
|
|
for (Token *tok = list.front();
|
|
tok && tok->next();
|
|
tok = tok->next()) {
|
|
const char c1 = tok->str()[0];
|
|
|
|
if (tok->str().length() == 1 && tok->next()->str().length() == 1) {
|
|
const char c2 = tok->next()->str()[0];
|
|
|
|
// combine +-*/ and =
|
|
if (c2 == '=' && (std::strchr("+-*/%&|^=!<>", c1))) {
|
|
tok->str(tok->str() + c2);
|
|
tok->deleteNext();
|
|
continue;
|
|
}
|
|
|
|
// simplify "->"
|
|
else if (c1 == '-' && c2 == '>') {
|
|
// If the preceding sequence is "( & %name% )", replace it by "%name%"
|
|
Token *t = tok->tokAt(-4);
|
|
if (t && Token::Match(t, "( & %name% )")) {
|
|
t->deleteThis();
|
|
t->deleteThis();
|
|
t->deleteNext();
|
|
tok = t->next();
|
|
}
|
|
// Replace "->" with "."
|
|
tok->str(".");
|
|
tok->originalName("->");
|
|
tok->deleteNext();
|
|
continue;
|
|
}
|
|
} else if (tok->next()->str() == "=") {
|
|
if (tok->str() == ">>") {
|
|
tok->str(">>=");
|
|
tok->deleteNext();
|
|
} else if (tok->str() == "<<") {
|
|
tok->str("<<=");
|
|
tok->deleteNext();
|
|
}
|
|
} else if (cpp && (c1 == 'p' || c1 == '_') &&
|
|
Token::Match(tok, "private|protected|public|__published : !!:")) {
|
|
bool simplify = false;
|
|
unsigned int par = 0U;
|
|
for (const Token *prev = tok->tokAt(-1); prev; prev = prev->previous()) {
|
|
if (prev->str() == ")") {
|
|
++par;
|
|
} else if (prev->str() == "(") {
|
|
if (par == 0U)
|
|
break;
|
|
--par;
|
|
}
|
|
if (par != 0U || prev->str() == "(")
|
|
continue;
|
|
if (Token::Match(prev, "[;{}]")) {
|
|
simplify = true;
|
|
break;
|
|
}
|
|
if (prev->isName() && prev->isUpperCaseName())
|
|
continue;
|
|
if (prev->isName() && prev->str()[prev->str().size() - 1U] == ':')
|
|
simplify = true;
|
|
break;
|
|
}
|
|
if (simplify) {
|
|
tok->str(tok->str() + ":");
|
|
tok->deleteNext();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::combineStrings()
|
|
{
|
|
// Combine wide strings
|
|
for (Token *tok = list.front();
|
|
tok;
|
|
tok = tok->next()) {
|
|
while (tok->str() == "L" && tok->next() && tok->next()->tokType() == Token::eString) {
|
|
// Combine 'L "string"'
|
|
tok->str(tok->next()->str());
|
|
tok->deleteNext();
|
|
tok->isLong(true);
|
|
}
|
|
}
|
|
|
|
// Combine strings
|
|
for (Token *tok = list.front();
|
|
tok;
|
|
tok = tok->next()) {
|
|
if (tok->str()[0] != '"')
|
|
continue;
|
|
|
|
tok->str(simplifyString(tok->str()));
|
|
while (tok->next() && tok->next()->tokType() == Token::eString) {
|
|
// Two strings after each other, combine them
|
|
tok->concatStr(simplifyString(tok->next()->str()));
|
|
tok->deleteNext();
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::concatenateDoubleSharp()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
while (Token::Match(tok, "%num%|%name% ## %num%|%name%")) {
|
|
tok->str(tok->str() + tok->strAt(2));
|
|
tok->deleteNext(2);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyFileAndLineMacro()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->str() == "__FILE__")
|
|
tok->str("\"" + list.file(tok) + "\"");
|
|
else if (tok->str() == "__LINE__")
|
|
tok->str(MathLib::toString(tok->linenr()));
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyNull()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->str() == "NULL" && (!Token::Match(tok->previous(), "[(,] NULL [,)]") || tok->strAt(-2) == "="))
|
|
tok->str("0");
|
|
else if (tok->str() == "__null" || tok->str() == "'\\0'" || tok->str() == "'\\x0'") {
|
|
tok->originalName(tok->str());
|
|
tok->str("0");
|
|
}
|
|
}
|
|
|
|
// nullptr..
|
|
if (isCPP() && _settings->standards.cpp == Standards::CPP11) {
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->str() == "nullptr")
|
|
tok->str("0");
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::concatenateNegativeNumberAndAnyPositive()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (!Token::Match(tok, "?|:|,|(|[|{|return|case|sizeof|%op% +|-") || tok->tokType() == Token::eIncDecOp)
|
|
continue;
|
|
|
|
while (tok->next() && tok->next()->str() == "+")
|
|
tok->deleteNext();
|
|
|
|
if (Token::Match(tok->next(), "- %num%")) {
|
|
tok->deleteNext();
|
|
tok->next()->str("-" + tok->next()->str());
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyExternC()
|
|
{
|
|
if (isC())
|
|
return;
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::simpleMatch(tok, "extern \"C\"")) {
|
|
if (tok->strAt(2) == "{") {
|
|
tok->linkAt(2)->deleteThis();
|
|
tok->deleteNext(2);
|
|
} else
|
|
tok->deleteNext();
|
|
tok->deleteThis();
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyRoundCurlyParentheses()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
while (Token::Match(tok, "[;{}:] ( {") &&
|
|
Token::simpleMatch(tok->linkAt(2), "} ) ;")) {
|
|
if (tok->str() == ":" && !Token::Match(tok->tokAt(-2),"[;{}] %type% :"))
|
|
break;
|
|
Token *end = tok->linkAt(2)->tokAt(-3);
|
|
if (Token::Match(end, "[;{}] %num%|%str% ;"))
|
|
end->deleteNext(2);
|
|
tok->linkAt(2)->previous()->deleteNext(3);
|
|
tok->deleteNext(2);
|
|
}
|
|
if (Token::Match(tok, "( { %bool%|%char%|%num%|%str%|%name% ; } )")) {
|
|
tok->deleteNext();
|
|
tok->deleteThis();
|
|
tok->deleteNext(3);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifySQL()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::simpleMatch(tok, "EXEC SQL")) {
|
|
const Token *end = tok->tokAt(2);
|
|
while (end && end->str() != ";")
|
|
end = end->next();
|
|
|
|
std::string instruction = tok->stringifyList(end);
|
|
// delete all tokens until ';'
|
|
Token::eraseTokens(tok, end);
|
|
|
|
// insert "asm ( "instruction" ) ;"
|
|
tok->str("asm");
|
|
// it can happen that 'end' is NULL when wrong code is inserted
|
|
if (!tok->next())
|
|
tok->insertToken(";");
|
|
tok->insertToken(")");
|
|
tok->insertToken("\"" + instruction + "\"");
|
|
tok->insertToken("(");
|
|
// jump to ';' and continue
|
|
tok = tok->tokAt(3);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyArrayAccessSyntax()
|
|
{
|
|
// 0[a] -> a[0]
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->isNumber() && Token::Match(tok, "%num% [ %name% ]")) {
|
|
const std::string number(tok->str());
|
|
Token* indexTok = tok->tokAt(2);
|
|
tok->str(indexTok->str());
|
|
tok->varId(indexTok->varId());
|
|
indexTok->str(number);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyParameterVoid()
|
|
{
|
|
for (Token* tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "%name% ( void )"))
|
|
tok->next()->deleteNext();
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyRedundantConsecutiveBraces()
|
|
{
|
|
// Remove redundant consecutive braces, i.e. '.. { { .. } } ..' -> '.. { .. } ..'.
|
|
for (Token *tok = list.front(); tok;) {
|
|
if (Token::simpleMatch(tok, "= {")) {
|
|
tok = tok->linkAt(1);
|
|
} else if (Token::simpleMatch(tok, "{ {") && Token::simpleMatch(tok->next()->link(), "} }")) {
|
|
//remove internal parentheses
|
|
tok->next()->link()->deleteThis();
|
|
tok->deleteNext();
|
|
} else
|
|
tok = tok->next();
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyDoublePlusAndDoubleMinus()
|
|
{
|
|
// Convert - - into + and + - into -
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
while (tok->next()) {
|
|
if (tok->str() == "+") {
|
|
if (tok->next()->str()[0] == '-') {
|
|
tok = tok->next();
|
|
if (tok->str().size() == 1) {
|
|
tok = tok->previous();
|
|
tok->str("-");
|
|
tok->deleteNext();
|
|
} else if (tok->isNumber()) {
|
|
tok->str(tok->str().substr(1));
|
|
tok = tok->previous();
|
|
tok->str("-");
|
|
}
|
|
continue;
|
|
}
|
|
} else if (tok->str() == "-") {
|
|
if (tok->next()->str()[0] == '-') {
|
|
tok = tok->next();
|
|
if (tok->str().size() == 1) {
|
|
tok = tok->previous();
|
|
tok->str("+");
|
|
tok->deleteNext();
|
|
} else if (tok->isNumber()) {
|
|
tok->str(tok->str().substr(1));
|
|
tok = tok->previous();
|
|
tok->str("+");
|
|
}
|
|
continue;
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/** Specify array size if it hasn't been given */
|
|
|
|
void Tokenizer::arraySize()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (!tok->isName() || !Token::Match(tok, "%var% [ ] ="))
|
|
continue;
|
|
bool addlength = false;
|
|
if (Token::Match(tok, "%var% [ ] = { %str% } ;")) {
|
|
Token *t = tok->tokAt(3);
|
|
t->deleteNext();
|
|
t->next()->deleteNext();
|
|
addlength = true;
|
|
}
|
|
|
|
if (addlength || Token::Match(tok, "%var% [ ] = %str% ;")) {
|
|
tok = tok->next();
|
|
std::size_t sz = Token::getStrSize(tok->tokAt(3));
|
|
tok->insertToken(MathLib::toString(sz));
|
|
tok = tok->tokAt(5);
|
|
}
|
|
|
|
else if (Token::Match(tok, "%var% [ ] = {")) {
|
|
MathLib::biguint sz = 1;
|
|
tok = tok->next();
|
|
Token *end = tok->linkAt(3);
|
|
for (Token *tok2 = tok->tokAt(4); tok2 && tok2 != end; tok2 = tok2->next()) {
|
|
if (tok2->link() && Token::Match(tok2, "{|(|[|<")) {
|
|
if (tok2->str() == "[" && tok2->link()->strAt(1) == "=") { // designated initializer
|
|
if (Token::Match(tok2, "[ %num% ]"))
|
|
sz = std::max(sz, MathLib::toULongNumber(tok2->strAt(1)) + 1U);
|
|
else {
|
|
sz = 0;
|
|
break;
|
|
}
|
|
}
|
|
tok2 = tok2->link();
|
|
} else if (tok2->str() == ",") {
|
|
if (!Token::Match(tok2->next(), "[},]"))
|
|
++sz;
|
|
else {
|
|
tok2 = tok2->previous();
|
|
tok2->deleteNext();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (sz != 0)
|
|
tok->insertToken(MathLib::toString(sz));
|
|
|
|
tok = end->next() ? end->next() : end;
|
|
}
|
|
}
|
|
}
|
|
|
|
static Token *skipTernaryOp(Token *tok)
|
|
{
|
|
unsigned int colonlevel = 1;
|
|
while (nullptr != (tok = tok->next())) {
|
|
if (tok->str() == "?") {
|
|
++colonlevel;
|
|
} else if (tok->str() == ":") {
|
|
--colonlevel;
|
|
if (colonlevel == 0) {
|
|
tok = tok->next();
|
|
break;
|
|
}
|
|
}
|
|
if (tok->link() && Token::Match(tok, "[(<]"))
|
|
tok = tok->link();
|
|
else if (Token::Match(tok->next(), "[{};)]"))
|
|
break;
|
|
}
|
|
if (colonlevel) // Ticket #5214: Make sure the ':' matches the proper '?'
|
|
return 0;
|
|
return tok;
|
|
}
|
|
|
|
const Token * Tokenizer::startOfExecutableScope(const Token * tok)
|
|
{
|
|
if (tok->str() != ")")
|
|
return nullptr;
|
|
|
|
tok = isFunctionHead(tok, ":{", true);
|
|
|
|
if (Token::Match(tok, ": %name% [({]")) {
|
|
while (Token::Match(tok, "[:,] %name% [({]"))
|
|
tok = tok->linkAt(2)->next();
|
|
}
|
|
|
|
return (tok && tok->str() == "{") ? tok : nullptr;
|
|
}
|
|
|
|
|
|
/** simplify labels and case|default in the code: add a ";" if not already in.*/
|
|
|
|
void Tokenizer::simplifyLabelsCaseDefault()
|
|
{
|
|
bool executablescope = false;
|
|
unsigned int indentlevel = 0;
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
// Simplify labels in the executable scope..
|
|
Token *start = const_cast<Token *>(startOfExecutableScope(tok));
|
|
if (start) {
|
|
tok = start;
|
|
executablescope = true;
|
|
}
|
|
|
|
if (!executablescope)
|
|
continue;
|
|
|
|
if (tok->str() == "{") {
|
|
if (tok->previous()->str() == "=")
|
|
tok = tok->link();
|
|
else
|
|
++indentlevel;
|
|
} else if (tok->str() == "}") {
|
|
--indentlevel;
|
|
if (!indentlevel) {
|
|
executablescope = false;
|
|
continue;
|
|
}
|
|
} else if (Token::Match(tok, "(|["))
|
|
tok = tok->link();
|
|
|
|
if (Token::Match(tok, "[;{}:] case")) {
|
|
while (nullptr != (tok = tok->next())) {
|
|
if (Token::Match(tok, "(|[")) {
|
|
tok = tok->link();
|
|
} else if (tok->str() == "?") {
|
|
Token *tok1 = skipTernaryOp(tok);
|
|
if (!tok1) {
|
|
syntaxError(tok);
|
|
}
|
|
tok = tok1;
|
|
}
|
|
if (Token::Match(tok->next(),"[:{};]"))
|
|
break;
|
|
}
|
|
if (!tok)
|
|
break;
|
|
if (tok->str() != "case" && tok->next() && tok->next()->str() == ":") {
|
|
tok = tok->next();
|
|
if (!tok->next())
|
|
syntaxError(tok); // #7270 invalid code
|
|
if (tok->next()->str() != ";" && tok->next()->str() != "case")
|
|
tok->insertToken(";");
|
|
else
|
|
tok = tok->previous();
|
|
} else {
|
|
syntaxError(tok);
|
|
}
|
|
} else if (Token::Match(tok, "[;{}] %name% : !!;")) {
|
|
tok = tok->tokAt(2);
|
|
tok->insertToken(";");
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void Tokenizer::simplifyCaseRange()
|
|
{
|
|
for (Token* tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "case %num% . . . %num% :")) {
|
|
MathLib::bigint start = MathLib::toLongNumber(tok->strAt(1));
|
|
MathLib::bigint end = MathLib::toLongNumber(tok->strAt(5));
|
|
end = std::min(start + 50, end); // Simplify it 50 times at maximum
|
|
if (start < end) {
|
|
tok = tok->tokAt(2);
|
|
tok->str(":");
|
|
tok->deleteNext();
|
|
tok->next()->str("case");
|
|
for (MathLib::bigint i = end-1; i > start; i--) {
|
|
tok->insertToken(":");
|
|
tok->insertToken(MathLib::toString(i));
|
|
tok->insertToken("case");
|
|
}
|
|
}
|
|
} else if (Token::Match(tok, "case %char% . . . %char% :")) {
|
|
char start = tok->strAt(1)[1];
|
|
char end = tok->strAt(5)[1];
|
|
if (start < end) {
|
|
tok = tok->tokAt(2);
|
|
tok->str(":");
|
|
tok->deleteNext();
|
|
tok->next()->str("case");
|
|
for (char i = end - 1; i > start; i--) {
|
|
tok->insertToken(":");
|
|
tok->insertToken(std::string(1, '\'') + i + '\'');
|
|
tok->insertToken("case");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
void Tokenizer::simplifyTemplates()
|
|
{
|
|
if (isC())
|
|
return;
|
|
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
// #2648 - simple fix for sizeof used as template parameter
|
|
// TODO: this is a bit hardcoded. make a bit more generic
|
|
if (Token::Match(tok, "%name% < sizeof ( %type% ) >") && tok->tokAt(4)->isStandardType()) {
|
|
Token * const tok3 = tok->next();
|
|
const unsigned int sizeOfResult = sizeOfType(tok3->tokAt(3));
|
|
tok3->deleteNext(4);
|
|
tok3->insertToken(MathLib::toString(sizeOfResult));
|
|
}
|
|
// Ticket #6181: normalize C++11 template parameter list closing syntax
|
|
if (tok->str() == "<" && TemplateSimplifier::templateParameters(tok)) {
|
|
Token *endTok = tok->findClosingBracket();
|
|
if (endTok && endTok->str() == ">>") {
|
|
endTok->str(">");
|
|
endTok->insertToken(">");
|
|
}
|
|
}
|
|
}
|
|
|
|
TemplateSimplifier::simplifyTemplates(
|
|
list,
|
|
_errorLogger,
|
|
_settings,
|
|
#ifdef MAXTIME
|
|
maxtime,
|
|
#else
|
|
0, // ignored
|
|
#endif
|
|
_codeWithTemplates);
|
|
}
|
|
//---------------------------------------------------------------------------
|
|
|
|
|
|
static bool setVarIdParseDeclaration(const Token **tok, const std::map<std::string,unsigned int> &variableId, bool executableScope, bool cpp, bool c)
|
|
{
|
|
const Token *tok2 = *tok;
|
|
if (!tok2->isName())
|
|
return false;
|
|
|
|
unsigned int typeCount = 0;
|
|
unsigned int singleNameCount = 0;
|
|
bool hasstruct = false; // Is there a "struct" or "class"?
|
|
bool bracket = false;
|
|
bool ref = false;
|
|
while (tok2) {
|
|
if (tok2->isName()) {
|
|
if (cpp && Token::Match(tok2, "namespace|public|private|protected"))
|
|
return false;
|
|
if (Token::Match(tok2, "struct|union|enum") || (!c && Token::Match(tok2, "class|typename"))) {
|
|
hasstruct = true;
|
|
typeCount = 0;
|
|
singleNameCount = 0;
|
|
} else if (tok2->str() == "const") {
|
|
; // just skip "const"
|
|
} else if (!hasstruct && variableId.find(tok2->str()) != variableId.end() && tok2->previous()->str() != "::") {
|
|
++typeCount;
|
|
tok2 = tok2->next();
|
|
if (!tok2 || tok2->str() != "::")
|
|
break;
|
|
} else {
|
|
if (tok2->str() != "void" || Token::Match(tok2, "void const| *|(")) // just "void" cannot be a variable type
|
|
++typeCount;
|
|
++singleNameCount;
|
|
}
|
|
} else if (!c && ((TemplateSimplifier::templateParameters(tok2) > 0) ||
|
|
Token::simpleMatch(tok2, "< >") /* Ticket #4764 */)) {
|
|
tok2 = tok2->findClosingBracket();
|
|
if (tok2->str() != ">")
|
|
break;
|
|
singleNameCount = 1;
|
|
} else if (Token::Match(tok2, "&|&&")) {
|
|
ref = !bracket;
|
|
} else if (singleNameCount == 1 && tok2->str() == "(" && Token::Match(tok2->link()->next(), "(|[")) {
|
|
bracket = true; // Skip: Seems to be valid pointer to array or function pointer
|
|
} else if (tok2->str() == "::") {
|
|
singleNameCount = 0;
|
|
} else if (tok2->str() != "*" && tok2->str() != "::") {
|
|
break;
|
|
}
|
|
tok2 = tok2->next();
|
|
}
|
|
|
|
if (tok2) {
|
|
*tok = tok2;
|
|
|
|
// In executable scopes, references must be assigned
|
|
// Catching by reference is an exception
|
|
if (executableScope && ref) {
|
|
if (Token::Match(tok2, "(|=|{|:"))
|
|
; // reference is assigned => ok
|
|
else if (tok2->str() != ")" || tok2->link()->strAt(-1) != "catch")
|
|
return false; // not catching by reference => not declaration
|
|
}
|
|
}
|
|
|
|
// Check if array declaration is valid (#2638)
|
|
// invalid declaration: AAA a[4] = 0;
|
|
if (typeCount >= 2 && executableScope && tok2 && tok2->str() == "[") {
|
|
const Token *tok3 = tok2->link()->next();
|
|
while (tok3 && tok3->str() == "[") {
|
|
tok3 = tok3->link()->next();
|
|
}
|
|
if (Token::Match(tok3, "= %num%"))
|
|
return false;
|
|
}
|
|
|
|
return bool(typeCount >= 2 && tok2 && Token::Match(tok2->tokAt(-2), "!!:: %type%"));
|
|
}
|
|
|
|
|
|
static void setVarIdStructMembers(Token **tok1,
|
|
std::map<unsigned int, std::map<std::string, unsigned int> >& structMembers,
|
|
unsigned int *_varId)
|
|
{
|
|
Token *tok = *tok1;
|
|
|
|
if (Token::Match(tok, "%name% = { . %name% =")) {
|
|
const unsigned int struct_varid = tok->varId();
|
|
if (struct_varid == 0)
|
|
return;
|
|
|
|
std::map<std::string, unsigned int>& members = structMembers[struct_varid];
|
|
|
|
tok = tok->tokAt(3);
|
|
while (tok->str() != "}") {
|
|
if (Token::Match(tok, "{|[|("))
|
|
tok = tok->link();
|
|
if (Token::Match(tok->previous(), "[,{] . %name% =")) {
|
|
tok = tok->next();
|
|
const std::map<std::string, unsigned int>::iterator it = members.find(tok->str());
|
|
if (it == members.end()) {
|
|
members[tok->str()] = ++(*_varId);
|
|
tok->varId(*_varId);
|
|
} else {
|
|
tok->varId(it->second);
|
|
}
|
|
}
|
|
tok = tok->next();
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
while (Token::Match(tok->next(), ". %name% !!(")) {
|
|
const unsigned int struct_varid = tok->varId();
|
|
tok = tok->tokAt(2);
|
|
if (struct_varid == 0)
|
|
continue;
|
|
|
|
// Don't set varid for template function
|
|
if (TemplateSimplifier::templateParameters(tok->next()) > 0)
|
|
break;
|
|
|
|
std::map<std::string, unsigned int>& members = structMembers[struct_varid];
|
|
const std::map<std::string, unsigned int>::iterator it = members.find(tok->str());
|
|
if (it == members.end()) {
|
|
members[tok->str()] = ++(*_varId);
|
|
tok->varId(*_varId);
|
|
} else {
|
|
tok->varId(it->second);
|
|
}
|
|
}
|
|
// tok can't be null
|
|
*tok1 = tok;
|
|
}
|
|
|
|
|
|
void Tokenizer::setVarIdClassDeclaration(Token * const startToken,
|
|
const std::map<std::string, unsigned int> &variableId,
|
|
const unsigned int scopeStartVarId,
|
|
std::map<unsigned int, std::map<std::string,unsigned int> >& structMembers)
|
|
{
|
|
// end of scope
|
|
const Token * const endToken = startToken->link();
|
|
|
|
// determine class name
|
|
std::string className;
|
|
for (const Token *tok = startToken->previous(); tok; tok = tok->previous()) {
|
|
if (!tok->isName() && tok->str() != ":")
|
|
break;
|
|
if (Token::Match(tok, "class|struct %type% [:{]")) {
|
|
className = tok->next()->str();
|
|
break;
|
|
}
|
|
}
|
|
|
|
// replace varids..
|
|
unsigned int indentlevel = 0;
|
|
bool initList = false;
|
|
const Token *initListArgLastToken = nullptr;
|
|
for (Token *tok = startToken->next(); tok != endToken; tok = tok->next()) {
|
|
if (!tok)
|
|
syntaxError(nullptr); // #7089 invalid code
|
|
if (initList) {
|
|
if (tok == initListArgLastToken)
|
|
initListArgLastToken = nullptr;
|
|
else if (!initListArgLastToken &&
|
|
Token::Match(tok->previous(), "%name%|>|>> {|(") &&
|
|
Token::Match(tok->link(), "}|) ,|{"))
|
|
initListArgLastToken = tok->link();
|
|
}
|
|
if (tok->str() == "{") {
|
|
if (initList && !initListArgLastToken)
|
|
initList = false;
|
|
++indentlevel;
|
|
} else if (tok->str() == "}")
|
|
--indentlevel;
|
|
else if (initList && indentlevel == 0 && Token::Match(tok->previous(), "[,:] %name% [({]")) {
|
|
const std::map<std::string, unsigned int>::const_iterator it = variableId.find(tok->str());
|
|
if (it != variableId.end()) {
|
|
tok->varId(it->second);
|
|
}
|
|
} else if (tok->isName() && tok->varId() <= scopeStartVarId) {
|
|
if (indentlevel > 0 || initList) {
|
|
if (Token::Match(tok->previous(), "::|.") && tok->strAt(-2) != "this" && !Token::simpleMatch(tok->tokAt(-5), "( * this ) ."))
|
|
continue;
|
|
if (!tok->next())
|
|
syntaxError(nullptr); // #7237 invalid code
|
|
if (tok->next()->str() == "::") {
|
|
if (tok->str() == className)
|
|
tok = tok->tokAt(2);
|
|
else
|
|
continue;
|
|
}
|
|
|
|
const std::map<std::string, unsigned int>::const_iterator it = variableId.find(tok->str());
|
|
if (it != variableId.end()) {
|
|
tok->varId(it->second);
|
|
setVarIdStructMembers(&tok, structMembers, &_varId);
|
|
}
|
|
}
|
|
} else if (indentlevel == 0 && tok->str() == ":" && !initListArgLastToken)
|
|
initList = true;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
// Update the variable ids..
|
|
// Parse each function..
|
|
static void setVarIdClassFunction(const std::string &classname,
|
|
Token * const startToken,
|
|
const Token * const endToken,
|
|
const std::map<std::string, unsigned int> &varlist,
|
|
std::map<unsigned int, std::map<std::string, unsigned int> >& structMembers,
|
|
unsigned int *_varId)
|
|
{
|
|
for (Token *tok2 = startToken; tok2 && tok2 != endToken; tok2 = tok2->next()) {
|
|
if (tok2->varId() != 0 || !tok2->isName())
|
|
continue;
|
|
if (Token::Match(tok2->tokAt(-2), ("!!" + classname + " ::").c_str()))
|
|
continue;
|
|
if (Token::Match(tok2->tokAt(-4), "%name% :: %name% ::")) // Currently unsupported
|
|
continue;
|
|
if (Token::Match(tok2->tokAt(-2), "!!this .") && !Token::simpleMatch(tok2->tokAt(-5), "( * this ) ."))
|
|
continue;
|
|
|
|
const std::map<std::string,unsigned int>::const_iterator it = varlist.find(tok2->str());
|
|
if (it != varlist.end()) {
|
|
tok2->varId(it->second);
|
|
setVarIdStructMembers(&tok2, structMembers, _varId);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
void Tokenizer::setVarId()
|
|
{
|
|
// Clear all variable ids
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->isName())
|
|
tok->varId(0);
|
|
}
|
|
|
|
setPodTypes();
|
|
|
|
setVarIdPass1();
|
|
|
|
setVarIdPass2();
|
|
}
|
|
|
|
|
|
// Variable declarations can't start with "return" etc.
|
|
static const std::set<std::string> notstart_c = make_container< std::set<std::string> > ()
|
|
<< "goto" << "NOT" << "return" << "sizeof"<< "typedef";
|
|
static const std::set<std::string> notstart_cpp = make_container< std::set<std::string> > ()
|
|
<< notstart_c
|
|
<< "delete" << "friend" << "new" << "throw" << "using" << "virtual" << "explicit" << "const_cast" << "dynamic_cast" << "reinterpret_cast" << "static_cast" ;
|
|
|
|
void Tokenizer::setVarIdPass1()
|
|
{
|
|
// Variable declarations can't start with "return" etc.
|
|
const std::set<std::string>& notstart = (isC()) ? notstart_c : notstart_cpp;
|
|
|
|
// variable id
|
|
_varId = 0;
|
|
std::map<std::string, unsigned int> variableId;
|
|
std::map<unsigned int, std::map<std::string, unsigned int> > structMembers;
|
|
std::stack< std::map<std::string, unsigned int> > scopeInfo;
|
|
|
|
std::stack<VarIdscopeInfo> scopeStack;
|
|
|
|
scopeStack.push(VarIdscopeInfo());
|
|
std::stack<const Token *> functionDeclEndStack;
|
|
bool initlist = false;
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (!functionDeclEndStack.empty() && tok == functionDeclEndStack.top()) {
|
|
functionDeclEndStack.pop();
|
|
if (tok->str() == ":")
|
|
initlist = true;
|
|
else if (tok->str() == ";") {
|
|
if (scopeInfo.empty())
|
|
cppcheckError(tok);
|
|
variableId.swap(scopeInfo.top());
|
|
scopeInfo.pop();
|
|
} else if (tok->str() == "{")
|
|
scopeStack.push(VarIdscopeInfo(true, _varId));
|
|
} else if (!initlist && tok->str()=="(") {
|
|
const Token * newFunctionDeclEnd = nullptr;
|
|
if (!scopeStack.top().isExecutable)
|
|
newFunctionDeclEnd = isFunctionHead(tok, "{:;");
|
|
else {
|
|
Token const * const tokenLinkNext = tok->link()->next();
|
|
if (tokenLinkNext && tokenLinkNext->str() == "{") // might be for- or while-loop or if-statement
|
|
newFunctionDeclEnd = tokenLinkNext;
|
|
}
|
|
if (newFunctionDeclEnd &&
|
|
(functionDeclEndStack.empty() || newFunctionDeclEnd != functionDeclEndStack.top())) {
|
|
functionDeclEndStack.push(newFunctionDeclEnd);
|
|
scopeInfo.push(variableId);
|
|
}
|
|
} else if (Token::Match(tok, "{|}")) {
|
|
const Token * const startToken = (tok->str() == "{") ? tok : tok->link();
|
|
|
|
// parse anonymous unions as part of the current scope
|
|
if (!Token::Match(startToken->previous(), "union|struct|enum {") &&
|
|
!(initlist && Token::Match(startToken->previous(), "%name%|>|>>") && Token::Match(startToken->link(), "} ,|{"))) {
|
|
|
|
if (tok->str() == "{") {
|
|
bool isExecutable;
|
|
if (tok->strAt(-1) == ")" || Token::Match(tok->tokAt(-2), ") %type%") ||
|
|
(initlist && tok->strAt(-1) == "}")) {
|
|
isExecutable = true;
|
|
} else {
|
|
isExecutable = ((scopeStack.top().isExecutable || initlist || tok->strAt(-1) == "else") &&
|
|
!isClassStructUnionEnumStart(tok));
|
|
scopeInfo.push(variableId);
|
|
}
|
|
initlist = false;
|
|
scopeStack.push(VarIdscopeInfo(isExecutable, _varId));
|
|
} else { /* if (tok->str() == "}") */
|
|
bool isNamespace = false;
|
|
for (const Token *tok1 = tok->link()->previous(); tok1 && tok1->isName(); tok1 = tok1->previous())
|
|
isNamespace |= (tok1->str() == "namespace");
|
|
// Set variable ids in class declaration..
|
|
if (!initlist && !isC() && !scopeStack.top().isExecutable && tok->link() && !isNamespace) {
|
|
setVarIdClassDeclaration(tok->link(),
|
|
variableId,
|
|
scopeStack.top().startVarid,
|
|
structMembers);
|
|
}
|
|
|
|
if (scopeInfo.empty()) {
|
|
variableId.clear();
|
|
} else {
|
|
variableId.swap(scopeInfo.top());
|
|
scopeInfo.pop();
|
|
}
|
|
|
|
scopeStack.pop();
|
|
if (scopeStack.empty()) { // should be impossible
|
|
scopeStack.push(VarIdscopeInfo());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (tok == list.front() || Token::Match(tok, "[;{}]") ||
|
|
(tok->str() == "(" && isFunctionHead(tok,"{")) ||
|
|
(tok->str() == "(" && !scopeStack.top().isExecutable && isFunctionHead(tok,";:")) ||
|
|
(tok->str() == "," && !scopeStack.top().isExecutable) ||
|
|
(tok->isName() && tok->str().at(tok->str().length()-1U) == ':')) {
|
|
|
|
// No variable declarations in sizeof
|
|
if (Token::simpleMatch(tok->previous(), "sizeof (")) {
|
|
continue;
|
|
}
|
|
|
|
if (_settings->terminated())
|
|
return;
|
|
|
|
// locate the variable name..
|
|
const Token *tok2 = (tok->isName()) ? tok : tok->next();
|
|
|
|
// private: protected: public: etc
|
|
while (tok2 && tok2->str()[tok2->str().size() - 1U] == ':') {
|
|
tok2 = tok2->next();
|
|
}
|
|
if (!tok2)
|
|
break;
|
|
|
|
// Variable declaration can't start with "return", etc
|
|
if (notstart.find(tok2->str()) != notstart.end())
|
|
continue;
|
|
|
|
if (!isC() && Token::simpleMatch(tok2, "const new"))
|
|
continue;
|
|
|
|
bool decl = setVarIdParseDeclaration(&tok2, variableId, scopeStack.top().isExecutable, isCPP(), isC());
|
|
if (decl) {
|
|
const Token* prev2 = tok2->previous();
|
|
if (Token::Match(prev2, "%type% [;[=,)]") && tok2->previous()->str() != "const")
|
|
;
|
|
else if (Token::Match(prev2, "%type% :") && tok->strAt(-1) == "for")
|
|
;
|
|
else if (Token::Match(prev2, "%type% ( !!)") && Token::simpleMatch(tok2->link(), ") ;")) {
|
|
// In C++ , a variable can't be called operator+ or something like that.
|
|
if (isCPP() &&
|
|
prev2->isOperatorKeyword())
|
|
continue;
|
|
|
|
const Token *tok3 = tok2->next();
|
|
if (!tok3->isStandardType() && tok3->str() != "void" && !Token::Match(tok3, "struct|union|class %type%") && tok3->str() != "." && !Token::Match(tok2->link()->previous(), "[&*]")) {
|
|
if (!scopeStack.top().isExecutable) {
|
|
// Detecting initializations with () in non-executable scope is hard and often impossible to be done safely. Thus, only treat code as a variable that definitly is one.
|
|
decl = false;
|
|
bool rhs = false;
|
|
for (; tok3; tok3 = tok3->nextArgumentBeforeCreateLinks2()) {
|
|
if (tok3->str() == "=") {
|
|
rhs = true;
|
|
continue;
|
|
}
|
|
|
|
if (tok3->str() == ",") {
|
|
rhs = false;
|
|
continue;
|
|
}
|
|
|
|
if (rhs)
|
|
continue;
|
|
|
|
if (tok3->isLiteral() ||
|
|
(tok3->isName() && (variableId.find(tok3->str()) != variableId.end())) ||
|
|
tok3->isOp() ||
|
|
tok3->str() == "(" ||
|
|
notstart.find(tok3->str()) != notstart.end()) {
|
|
decl = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
} else
|
|
decl = false;
|
|
} else if (isCPP() && Token::Match(prev2, "%type% {") && Token::simpleMatch(tok2->link(), "} ;")) { // C++11 initialization style
|
|
if (Token::Match(prev2, "do|try|else") || Token::Match(prev2->tokAt(-2), "struct|class|:"))
|
|
continue;
|
|
} else
|
|
decl = false;
|
|
|
|
if (decl) {
|
|
variableId[prev2->str()] = ++_varId;
|
|
|
|
// set varid for template parameters..
|
|
tok = tok->next();
|
|
while (Token::Match(tok, "%name%|::"))
|
|
tok = tok->next();
|
|
if (tok && tok->str() == "<") {
|
|
const Token *end = tok->findClosingBracket();
|
|
while (tok != end) {
|
|
if (tok->isName() && variableId.find(tok->str()) != variableId.end())
|
|
tok->varId(variableId[tok->str()]);
|
|
tok = tok->next();
|
|
}
|
|
}
|
|
|
|
tok = tok2->previous();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (tok->isName()) {
|
|
// don't set variable id after a struct|enum|union
|
|
if (Token::Match(tok->previous(), "struct|enum|union") || (isCPP() && tok->strAt(-1) == "class"))
|
|
continue;
|
|
|
|
if (!isC()) {
|
|
if (tok->previous() && tok->previous()->str() == "::")
|
|
continue;
|
|
if (tok->next() && tok->next()->str() == "::")
|
|
continue;
|
|
}
|
|
|
|
// function declaration inside executable scope?
|
|
if (scopeStack.top().isExecutable && Token::Match(tok, "%name% [,)]")) {
|
|
bool par = false;
|
|
const Token *start, *end;
|
|
for (start = tok; Token::Match(start, "%name%|*|&|,|("); start = start->previous()) {
|
|
if (start->str() == "(") {
|
|
if (par)
|
|
break;
|
|
par = true;
|
|
}
|
|
if (Token::Match(start, "[(,]")) {
|
|
if (!Token::Match(start, "[(,] %type% %name%|*|&"))
|
|
break;
|
|
}
|
|
if (start->varId() > 0U)
|
|
break;
|
|
}
|
|
for (end = tok->next(); Token::Match(end, "%name%|*|&|,"); end = end->next()) {}
|
|
if (Token::Match(start, "[;{}] %type% %name%|*") && par && Token::simpleMatch(end, ") ;"))
|
|
// function declaration => don't set varid
|
|
continue;
|
|
}
|
|
|
|
const std::map<std::string, unsigned int>::const_iterator it = variableId.find(tok->str());
|
|
if (it != variableId.end()) {
|
|
tok->varId(it->second);
|
|
setVarIdStructMembers(&tok, structMembers, &_varId);
|
|
}
|
|
} else if (Token::Match(tok, "::|. %name%")) {
|
|
// Don't set varid after a :: or . token
|
|
tok = tok->next();
|
|
} else if (tok->str() == ":" && Token::Match(tok->tokAt(-2), "class %type%")) {
|
|
do {
|
|
tok = tok->next();
|
|
} while (tok && (tok->isName() || tok->str() == ","));
|
|
if (!tok)
|
|
break;
|
|
tok = tok->previous();
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::setVarIdPass2()
|
|
{
|
|
std::map<unsigned int, std::map<std::string, unsigned int> > structMembers;
|
|
|
|
// Member functions and variables in this source
|
|
std::list<Token *> allMemberFunctions;
|
|
std::list<Token *> allMemberVars;
|
|
if (!isC()) {
|
|
for (Token *tok2 = list.front(); tok2; tok2 = tok2->next()) {
|
|
const Token* tok3 = nullptr;
|
|
if (Token::Match(tok2, "%name% :: ~| %name%"))
|
|
tok3 = tok2->next();
|
|
else if (Token::Match(tok2, "%name% <") && Token::Match(tok2->next()->findClosingBracket(),"> :: ~| %name%"))
|
|
tok3 = tok2->next()->findClosingBracket()->next();
|
|
else
|
|
continue;
|
|
|
|
while (Token::Match(tok3, ":: ~| %name%")) {
|
|
tok3 = tok3->next();
|
|
if (tok3->str() == "~")
|
|
tok3 = tok3->next();
|
|
tok3 = tok3->next();
|
|
}
|
|
if (!tok3)
|
|
syntaxError(tok2);
|
|
const std::string& str3 = tok3->str();
|
|
if (str3 == "(")
|
|
allMemberFunctions.push_back(tok2);
|
|
else if (str3 != "::" && tok2->strAt(-1) != "::") // Support only one depth
|
|
allMemberVars.push_back(tok2);
|
|
}
|
|
}
|
|
|
|
// class members..
|
|
std::map<std::string, std::map<std::string, unsigned int> > varsByClass;
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (!Token::Match(tok, "namespace|class|struct %name% {|:|::"))
|
|
continue;
|
|
|
|
std::string classname(tok->next()->str());
|
|
const Token* tokStart = tok->tokAt(2);
|
|
unsigned int nestedCount = 1;
|
|
while (Token::Match(tokStart, ":: %name%")) {
|
|
classname += " :: " + tokStart->strAt(1);
|
|
tokStart = tokStart->tokAt(2);
|
|
nestedCount++;
|
|
}
|
|
|
|
std::map<std::string, unsigned int>& thisClassVars = varsByClass[classname];
|
|
while (tokStart && tokStart->str() != "{") {
|
|
if (Token::Match(tokStart, "public|private|protected %name%"))
|
|
tokStart = tokStart->next();
|
|
if (tokStart->strAt(1) == "," || tokStart->strAt(1) == "{") {
|
|
const std::map<std::string, unsigned int>& baseClassVars = varsByClass[tokStart->str()];
|
|
thisClassVars.insert(baseClassVars.begin(), baseClassVars.end());
|
|
}
|
|
tokStart = tokStart->next();
|
|
}
|
|
// What member variables are there in this class?
|
|
if (tokStart) {
|
|
for (Token *tok2 = tokStart->next(); tok2 && tok2 != tokStart->link(); tok2 = tok2->next()) {
|
|
// skip parentheses..
|
|
if (tok2->link()) {
|
|
if (tok2->str() == "{") {
|
|
if (tok2->strAt(-1) == ")" || tok2->strAt(-2) == ")")
|
|
setVarIdClassFunction(classname, tok2, tok2->link(), thisClassVars, structMembers, &_varId);
|
|
tok2 = tok2->link();
|
|
} else if (tok2->str() == "(" && tok2->link()->strAt(1) != "(")
|
|
tok2 = tok2->link();
|
|
}
|
|
|
|
// Found a member variable..
|
|
else if (tok2->varId() > 0)
|
|
thisClassVars[tok2->str()] = tok2->varId();
|
|
}
|
|
}
|
|
|
|
// Are there any member variables in this class?
|
|
if (thisClassVars.empty())
|
|
continue;
|
|
|
|
// Member variables
|
|
for (std::list<Token *>::iterator func = allMemberVars.begin(); func != allMemberVars.end(); ++func) {
|
|
if (!Token::simpleMatch(*func, classname.c_str()))
|
|
continue;
|
|
|
|
Token *tok2 = *func;
|
|
tok2 = tok2->tokAt(2);
|
|
tok2->varId(thisClassVars[tok2->str()]);
|
|
}
|
|
|
|
if (isC() || tok->str() == "namespace")
|
|
continue;
|
|
|
|
// Set variable ids in member functions for this class..
|
|
for (std::list<Token *>::iterator func = allMemberFunctions.begin(); func != allMemberFunctions.end(); ++func) {
|
|
Token *tok2 = *func;
|
|
|
|
if (!Token::Match(tok2, classname.c_str()))
|
|
continue;
|
|
|
|
if (Token::Match(tok2, "%name% <"))
|
|
tok2 = tok2->next()->findClosingBracket();
|
|
|
|
// Found a class function..
|
|
if (!Token::Match(tok2, "%any% :: ~| %name%"))
|
|
continue;
|
|
|
|
// Goto the end parentheses..
|
|
tok2 = tok2->tokAt(nestedCount*2);
|
|
if (tok2->str() == "~")
|
|
tok2 = tok2->linkAt(2);
|
|
else
|
|
tok2 = tok2->linkAt(1);
|
|
|
|
// If this is a function implementation.. add it to funclist
|
|
Token * start = const_cast<Token *>(isFunctionHead(tok2, "{"));
|
|
if (start) {
|
|
setVarIdClassFunction(classname, start, start->link(), thisClassVars, structMembers, &_varId);
|
|
}
|
|
|
|
if (Token::Match(tok2, ") %name% ("))
|
|
tok2 = tok2->linkAt(2);
|
|
|
|
// constructor with initializer list
|
|
if (!Token::Match(tok2, ") : ::| %name%"))
|
|
continue;
|
|
|
|
Token *tok3 = tok2;
|
|
while (Token::Match(tok3, "[)}] [,:]")) {
|
|
tok3 = tok3->tokAt(2);
|
|
if (Token::Match(tok3, ":: %name%"))
|
|
tok3 = tok3->next();
|
|
while (Token::Match(tok3, "%name% :: %name%"))
|
|
tok3 = tok3->tokAt(2);
|
|
if (!Token::Match(tok3, "%name% (|{|<"))
|
|
break;
|
|
|
|
// set varid
|
|
std::map<std::string, unsigned int>::const_iterator varpos = thisClassVars.find(tok3->str());
|
|
if (varpos != thisClassVars.end())
|
|
tok3->varId(varpos->second);
|
|
|
|
// goto end of var
|
|
if (tok3->strAt(1) == "<") {
|
|
tok3 = tok3->next()->findClosingBracket();
|
|
if (tok3 && tok3->next() && tok3->next()->link())
|
|
tok3 = tok3->next()->link();
|
|
} else
|
|
tok3 = tok3->linkAt(1);
|
|
}
|
|
if (Token::Match(tok3, ")|} {")) {
|
|
setVarIdClassFunction(classname, tok2, tok3->next()->link(), thisClassVars, structMembers, &_varId);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void linkBrackets(Tokenizer* tokenizer, std::stack<const Token*>& type, std::stack<Token*>& links, Token* token, char open, char close)
|
|
{
|
|
if (token->str()[0] == open) {
|
|
links.push(token);
|
|
type.push(token);
|
|
} else if (token->str()[0] == close) {
|
|
if (links.empty()) {
|
|
// Error, { and } don't match.
|
|
tokenizer->syntaxError(token, open);
|
|
}
|
|
if (type.top()->str()[0] != open) {
|
|
tokenizer->syntaxError(type.top(), type.top()->str()[0]);
|
|
}
|
|
type.pop();
|
|
|
|
Token::createMutualLinks(links.top(), token);
|
|
links.pop();
|
|
}
|
|
}
|
|
|
|
void Tokenizer::createLinks()
|
|
{
|
|
std::stack<const Token*> type;
|
|
std::stack<Token*> links1;
|
|
std::stack<Token*> links2;
|
|
std::stack<Token*> links3;
|
|
for (Token *token = list.front(); token; token = token->next()) {
|
|
if (token->link()) {
|
|
token->link(0);
|
|
}
|
|
|
|
linkBrackets(this, type, links1, token, '{', '}');
|
|
|
|
linkBrackets(this, type, links2, token, '(', ')');
|
|
|
|
linkBrackets(this, type, links3, token, '[', ']');
|
|
}
|
|
|
|
if (!links1.empty()) {
|
|
// Error, { and } don't match.
|
|
syntaxError(links1.top(), '{');
|
|
}
|
|
|
|
if (!links2.empty()) {
|
|
// Error, ( and ) don't match.
|
|
syntaxError(links2.top(), '(');
|
|
}
|
|
|
|
if (!links3.empty()) {
|
|
// Error, [ and ] don't match.
|
|
syntaxError(links3.top(), '[');
|
|
}
|
|
}
|
|
|
|
void Tokenizer::createLinks2()
|
|
{
|
|
if (isC())
|
|
return;
|
|
|
|
const Token * templateToken = nullptr;
|
|
bool isStruct = false;
|
|
|
|
std::stack<Token*> type;
|
|
for (Token *token = list.front(); token; token = token->next()) {
|
|
if (Token::Match(token, "struct|class %name% :"))
|
|
isStruct = true;
|
|
else if (Token::Match(token, "[;{}]"))
|
|
isStruct = false;
|
|
|
|
if (token->link()) {
|
|
if (Token::Match(token, "{|[|("))
|
|
type.push(token);
|
|
else if (!type.empty() && Token::Match(token, "}|]|)")) {
|
|
while (type.top()->str() == "<")
|
|
type.pop();
|
|
type.pop();
|
|
templateToken = nullptr;
|
|
} else
|
|
token->link(0);
|
|
} else if (!templateToken && !isStruct && Token::Match(token, "%oror%|&&|;")) {
|
|
if (Token::Match(token, "&& [,>]"))
|
|
continue;
|
|
while (!type.empty() && type.top()->str() == "<")
|
|
type.pop();
|
|
} else if (token->str() == "<" && token->previous() && token->previous()->isName() && !token->previous()->varId()) {
|
|
type.push(token);
|
|
if (!templateToken && (token->previous()->str() == "template"))
|
|
templateToken = token;
|
|
} else if (token->str() == ">") {
|
|
if (type.empty() || type.top()->str() != "<") // < and > don't match.
|
|
continue;
|
|
if (token->next() && !Token::Match(token->next(), "%name%|>|&|*|::|,|(|)|{|;|[|:"))
|
|
continue;
|
|
|
|
// if > is followed by [ .. "new a<b>[" is expected
|
|
if (token->strAt(1) == "[") {
|
|
Token *prev = type.top()->previous();
|
|
while (prev && Token::Match(prev->previous(), ":: %name%"))
|
|
prev = prev->tokAt(-2);
|
|
if (prev && prev->str() != "new")
|
|
prev = prev->previous();
|
|
if (!prev || prev->str() != "new")
|
|
continue;
|
|
}
|
|
|
|
Token* top = type.top();
|
|
type.pop();
|
|
|
|
if (top == templateToken)
|
|
templateToken = nullptr;
|
|
|
|
Token::createMutualLinks(top, token);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::sizeofAddParentheses()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
Token* next = tok->next();
|
|
if (Token::Match(tok, "sizeof !!(") && next && (next->isLiteral() || next->isName() || Token::Match(next, "[*~!]"))) {
|
|
Token *endToken = next;
|
|
while (Token::Match(endToken->next(), "%name%|%num%|%str%|[|(|.|::|++|--|!|~") || (Token::Match(endToken, "%type% * %op%|?|:|const|;|,"))) {
|
|
if (endToken->strAt(1) == "[" || endToken->strAt(1) == "(")
|
|
endToken = endToken->linkAt(1);
|
|
else
|
|
endToken = endToken->next();
|
|
}
|
|
|
|
// Add ( after sizeof and ) behind endToken
|
|
tok->insertToken("(");
|
|
endToken->insertToken(")");
|
|
Token::createMutualLinks(tok->next(), endToken->next());
|
|
}
|
|
}
|
|
}
|
|
|
|
bool Tokenizer::simplifySizeof()
|
|
{
|
|
// Locate variable declarations and calculate the size
|
|
std::map<unsigned int, unsigned int> sizeOfVar;
|
|
std::map<unsigned int, const Token *> declTokOfVar;
|
|
for (const Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->varId() != 0 && sizeOfVar.find(tok->varId()) == sizeOfVar.end()) {
|
|
const unsigned int varId = tok->varId();
|
|
if (Token::Match(tok->tokAt(-3), "[;{}(,] %type% * %name% [;,)]") ||
|
|
Token::Match(tok->tokAt(-4), "[;{}(,] const %type% * %name% [;),]") ||
|
|
Token::Match(tok->tokAt(-2), "[;{}(,] %type% %name% [;),]") ||
|
|
Token::Match(tok->tokAt(-3), "[;{}(,] const %type% %name% [;),]")) {
|
|
const unsigned int size = sizeOfType(tok->previous());
|
|
if (size == 0) {
|
|
continue;
|
|
}
|
|
|
|
sizeOfVar[varId] = size;
|
|
declTokOfVar[varId] = tok;
|
|
}
|
|
|
|
else if (Token::Match(tok->previous(), "%type% %name% [ %num% ] [[;=]") ||
|
|
Token::Match(tok->tokAt(-2), "%type% * %name% [ %num% ] [[;=]")) {
|
|
unsigned int size = sizeOfType(tok->previous());
|
|
if (size == 0)
|
|
continue;
|
|
|
|
const Token* tok2 = tok->next();
|
|
do {
|
|
const MathLib::bigint num = MathLib::toLongNumber(tok2->strAt(1));
|
|
if (num<0)
|
|
break; // #6940 negative number
|
|
size *= (unsigned)num;
|
|
tok2 = tok2->tokAt(3);
|
|
} while (Token::Match(tok2, "[ %num% ]"));
|
|
if (Token::Match(tok2, "[;=]")) {
|
|
sizeOfVar[varId] = size;
|
|
declTokOfVar[varId] = tok;
|
|
}
|
|
if (!tok2) {
|
|
syntaxError(tok);
|
|
}
|
|
tok = tok2;
|
|
}
|
|
|
|
else if (Token::Match(tok->previous(), "%type% %name% [ %num% ] [,)]") ||
|
|
Token::Match(tok->tokAt(-2), "%type% * %name% [ %num% ] [,)]")) {
|
|
Token tempTok(0);
|
|
tempTok.str("*");
|
|
sizeOfVar[varId] = sizeOfType(&tempTok);
|
|
declTokOfVar[varId] = tok;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool ret = false;
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->str() != "sizeof")
|
|
continue;
|
|
|
|
if (Token::simpleMatch(tok->next(), ". . .")) {
|
|
tok->deleteNext(3);
|
|
}
|
|
|
|
// sizeof('x')
|
|
if (Token::Match(tok->next(), "( %char% )")) {
|
|
tok->deleteNext();
|
|
tok->deleteThis();
|
|
tok->deleteNext();
|
|
std::ostringstream sz;
|
|
sz << ((isC()) ? _settings->sizeof_int : 1) ; // #7490 sizeof('a') should be sizeof(int) in C mode
|
|
tok->str(sz.str());
|
|
ret = true;
|
|
continue;
|
|
}
|
|
|
|
// sizeof ("text")
|
|
if (Token::Match(tok->next(), "( %str% )")) {
|
|
tok->deleteNext();
|
|
tok->deleteThis();
|
|
tok->deleteNext();
|
|
std::ostringstream ostr;
|
|
ostr << (Token::getStrLength(tok) + 1);
|
|
tok->str(ostr.str());
|
|
ret = true;
|
|
continue;
|
|
}
|
|
|
|
// sizeof(type *) => sizeof(*)
|
|
if (Token::Match(tok->next(), "( %type% * )")) {
|
|
tok->next()->deleteNext();
|
|
}
|
|
|
|
if (Token::simpleMatch(tok->next(), "( * )")) {
|
|
tok->str(MathLib::toString(sizeOfType(tok->tokAt(2))));
|
|
tok->deleteNext(3);
|
|
ret = true;
|
|
}
|
|
|
|
// sizeof( a )
|
|
else if (Token::Match(tok->next(), "( %var% )")) {
|
|
std::map<unsigned int, unsigned int>::const_iterator sizeOfVarPos = sizeOfVar.find(tok->tokAt(2)->varId());
|
|
if (sizeOfVarPos != sizeOfVar.end()) {
|
|
tok->deleteNext();
|
|
tok->deleteThis();
|
|
tok->deleteNext();
|
|
tok->str(MathLib::toString(sizeOfVarPos->second));
|
|
ret = true;
|
|
} else {
|
|
// don't try to replace size of variable if variable has
|
|
// similar name with type (#329)
|
|
}
|
|
}
|
|
|
|
else if (Token::Match(tok->next(), "( %type% )")) {
|
|
const unsigned int size = sizeOfType(tok->tokAt(2));
|
|
if (size > 0) {
|
|
tok->str(MathLib::toString(size));
|
|
tok->deleteNext(3);
|
|
ret = true;
|
|
}
|
|
}
|
|
|
|
else if (Token::simpleMatch(tok->next(), "( *") || Token::Match(tok->next(), "( %name% [")) {
|
|
unsigned int derefs = 0;
|
|
|
|
const Token* nametok = tok->tokAt(2);
|
|
if (nametok->str() == "*") {
|
|
do {
|
|
nametok = nametok->next();
|
|
derefs++;
|
|
} while (nametok && nametok->str() == "*");
|
|
|
|
if (!Token::Match(nametok, "%name% )"))
|
|
continue;
|
|
} else {
|
|
const Token* tok2 = nametok->next();
|
|
do {
|
|
tok2 = tok2->link()->next();
|
|
derefs++;
|
|
} while (tok2 && tok2->str() == "[");
|
|
|
|
if (!tok2 || tok2->str() != ")")
|
|
continue;
|
|
}
|
|
|
|
// Some default value
|
|
MathLib::biguint size = 0;
|
|
|
|
const unsigned int varid = nametok->varId();
|
|
if (derefs != 0 && varid != 0 && declTokOfVar.find(varid) != declTokOfVar.end()) {
|
|
// Try to locate variable declaration..
|
|
const Token *decltok = declTokOfVar[varid];
|
|
if (Token::Match(decltok->previous(), "%type%|* %name% [")) {
|
|
size = sizeOfType(decltok->previous());
|
|
} else if (Token::Match(decltok->tokAt(-2), "%type% * %name%")) {
|
|
size = sizeOfType(decltok->tokAt(-2));
|
|
}
|
|
// Multi-dimensional array..
|
|
if (Token::Match(decltok, "%name% [") && Token::simpleMatch(decltok->linkAt(1), "] [")) {
|
|
const Token *tok2 = decltok;
|
|
for (unsigned int i = 0; i < derefs; i++)
|
|
tok2 = tok2->linkAt(1); // Skip all dimensions that are derefenced before the sizeof call
|
|
while (Token::Match(tok2, "] [ %num% ]")) {
|
|
size *= MathLib::toULongNumber(tok2->strAt(2));
|
|
tok2 = tok2->linkAt(1);
|
|
}
|
|
if (Token::simpleMatch(tok2, "] ["))
|
|
continue;
|
|
}
|
|
} else if (nametok->strAt(1) == "[" && nametok->isStandardType()) {
|
|
size = sizeOfType(nametok);
|
|
if (size == 0)
|
|
continue;
|
|
const Token *tok2 = nametok->next();
|
|
while (Token::Match(tok2, "[ %num% ]")) {
|
|
size *= MathLib::toULongNumber(tok2->strAt(1));
|
|
tok2 = tok2->link()->next();
|
|
}
|
|
if (!tok2 || tok2->str() != ")")
|
|
continue;
|
|
}
|
|
|
|
if (size > 0) {
|
|
tok->str(MathLib::toString(size));
|
|
Token::eraseTokens(tok, tok->next()->link()->next());
|
|
ret = true;
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
bool Tokenizer::simplifyTokenList1(const char FileName[])
|
|
{
|
|
if (_settings->terminated())
|
|
return false;
|
|
|
|
// if MACRO
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "if|for|while|BOOST_FOREACH %name% (")) {
|
|
if (Token::simpleMatch(tok, "for each")) {
|
|
// 'for each ( )' -> 'asm ( )'
|
|
tok->str("asm");
|
|
tok->deleteNext();
|
|
} else {
|
|
syntaxError(tok);
|
|
}
|
|
}
|
|
}
|
|
|
|
// remove MACRO in variable declaration: MACRO int x;
|
|
removeMacroInVarDecl();
|
|
|
|
// Combine strings
|
|
combineStrings();
|
|
|
|
// replace inline SQL with "asm()" (Oracle PRO*C). Ticket: #1959
|
|
simplifySQL();
|
|
|
|
// replace __LINE__ macro with line number
|
|
simplifyFileAndLineMacro();
|
|
|
|
// Concatenate double sharp: 'a ## b' -> 'ab'
|
|
concatenateDoubleSharp();
|
|
|
|
createLinks();
|
|
|
|
// if (x) MACRO() ..
|
|
for (const Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::simpleMatch(tok, "if (")) {
|
|
tok = tok->next()->link();
|
|
if (Token::Match(tok, ") %name% (") &&
|
|
tok->next()->isUpperCaseName() &&
|
|
Token::Match(tok->linkAt(2), ") {|else")) {
|
|
syntaxError(tok->next());
|
|
}
|
|
}
|
|
}
|
|
|
|
if (_settings->terminated())
|
|
return false;
|
|
|
|
// Remove [[deprecated]]
|
|
simplifyDeprecated();
|
|
|
|
// remove __attribute__((?))
|
|
simplifyAttribute();
|
|
|
|
// Simplify the C alternative tokens (and, or, etc.)
|
|
simplifyCAlternativeTokens();
|
|
|
|
// replace 'NULL' and similar '0'-defined macros with '0'
|
|
simplifyNull();
|
|
|
|
// replace 'sin(0)' to '0' and other similar math expressions
|
|
simplifyMathExpressions();
|
|
|
|
// combine "- %num%"
|
|
concatenateNegativeNumberAndAnyPositive();
|
|
|
|
// Combine tokens..
|
|
combineOperators();
|
|
|
|
// simplify simple calculations
|
|
for (Token *tok = list.front() ? list.front()->next() : nullptr; tok; tok = tok->next()) {
|
|
if (tok->isNumber())
|
|
TemplateSimplifier::simplifyNumericCalculations(tok->previous());
|
|
}
|
|
|
|
// remove extern "C" and extern "C" {}
|
|
if (isCPP())
|
|
simplifyExternC();
|
|
|
|
// simplify weird but legal code: "[;{}] ( { code; } ) ;"->"[;{}] code;"
|
|
simplifyRoundCurlyParentheses();
|
|
|
|
// check for simple syntax errors..
|
|
for (const Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::simpleMatch(tok, "> struct {") &&
|
|
Token::simpleMatch(tok->linkAt(2), "} ;")) {
|
|
syntaxError(tok);
|
|
}
|
|
}
|
|
|
|
if (!simplifyAddBraces())
|
|
return false;
|
|
|
|
sizeofAddParentheses();
|
|
|
|
// Simplify: 0[foo] -> *(foo)
|
|
for (Token* tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::simpleMatch(tok, "0 [") && tok->linkAt(1)) {
|
|
tok->str("*");
|
|
tok->next()->str("(");
|
|
tok->linkAt(1)->str(")");
|
|
}
|
|
}
|
|
|
|
if (_settings->terminated())
|
|
return false;
|
|
|
|
// Remove "volatile", "inline", "register", and "restrict"
|
|
simplifyKeyword();
|
|
|
|
// Convert K&R function declarations to modern C
|
|
simplifyVarDecl(true);
|
|
simplifyFunctionParameters();
|
|
|
|
// simplify case ranges (gcc extension)
|
|
simplifyCaseRange();
|
|
|
|
// simplify labels and 'case|default'-like syntaxes
|
|
simplifyLabelsCaseDefault();
|
|
|
|
// simplify '[;{}] * & ( %any% ) =' to '%any% ='
|
|
simplifyMulAndParens();
|
|
|
|
if (!isC() && !_settings->library.markupFile(FileName)) {
|
|
findComplicatedSyntaxErrorsInTemplates();
|
|
}
|
|
|
|
if (_settings->terminated())
|
|
return false;
|
|
|
|
// remove calling conventions __cdecl, __stdcall..
|
|
simplifyCallingConvention();
|
|
|
|
// Remove __declspec()
|
|
simplifyDeclspec();
|
|
validate();
|
|
// remove some unhandled macros in global scope
|
|
removeMacrosInGlobalScope();
|
|
|
|
// remove undefined macro in class definition:
|
|
// class DLLEXPORT Fred { };
|
|
// class Fred FINAL : Base { };
|
|
removeMacroInClassDef();
|
|
|
|
// That call here fixes #7190
|
|
validate();
|
|
|
|
// remove unnecessary member qualification..
|
|
removeUnnecessaryQualification();
|
|
|
|
// convert Microsoft memory functions
|
|
simplifyMicrosoftMemoryFunctions();
|
|
|
|
// convert Microsoft string functions
|
|
simplifyMicrosoftStringFunctions();
|
|
|
|
if (_settings->terminated())
|
|
return false;
|
|
|
|
// Remove Qt signals and slots
|
|
simplifyQtSignalsSlots();
|
|
|
|
// remove Borland stuff..
|
|
simplifyBorland();
|
|
|
|
// #2449: syntax error: enum with typedef in it
|
|
checkForEnumsWithTypedef();
|
|
|
|
// Remove __asm..
|
|
simplifyAsm();
|
|
|
|
// Add parentheses to ternary operator where necessary
|
|
prepareTernaryOpForAST();
|
|
|
|
// Change initialisation of variable to assignment
|
|
simplifyInitVar();
|
|
|
|
// Split up variable declarations.
|
|
simplifyVarDecl(false);
|
|
|
|
// typedef..
|
|
if (m_timerResults) {
|
|
Timer t("Tokenizer::tokenize::simplifyTypedef", _settings->showtime, m_timerResults);
|
|
simplifyTypedef();
|
|
} else {
|
|
simplifyTypedef();
|
|
}
|
|
|
|
// Add parentheses to ternary operator where necessary
|
|
// TODO: this is only necessary if one typedef simplification had a comma and was used within ?:
|
|
// If typedef handling is refactored and moved to symboldatabase someday we can remove this
|
|
prepareTernaryOpForAST();
|
|
|
|
for (Token* tok = list.front(); tok;) {
|
|
if (Token::Match(tok, "union|struct|class union|struct|class"))
|
|
tok->deleteNext();
|
|
else
|
|
tok = tok->next();
|
|
}
|
|
|
|
// class x y {
|
|
if (isCPP() && _settings->isEnabled("information")) {
|
|
for (const Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "class %type% %type% [:{]")) {
|
|
unhandled_macro_class_x_y(tok);
|
|
}
|
|
}
|
|
}
|
|
|
|
// catch bad typedef canonicalization
|
|
//
|
|
// to reproduce bad typedef, download upx-ucl from:
|
|
// http://packages.debian.org/sid/upx-ucl
|
|
// analyse the file src/stub/src/i386-linux.elf.interp-main.c
|
|
validate();
|
|
|
|
// The simplify enum have inner loops
|
|
if (_settings->terminated())
|
|
return false;
|
|
|
|
// Put ^{} statements in asm()
|
|
simplifyAsm2();
|
|
|
|
// Order keywords "static" and "const"
|
|
simplifyStaticConst();
|
|
|
|
// convert platform dependent types to standard types
|
|
// 32 bits: size_t -> unsigned long
|
|
// 64 bits: size_t -> unsigned long long
|
|
simplifyPlatformTypes();
|
|
|
|
// collapse compound standard types into a single token
|
|
// unsigned long long int => long (with _isUnsigned=true,_isLong=true)
|
|
simplifyStdType();
|
|
|
|
if (_settings->terminated())
|
|
return false;
|
|
|
|
// simplify bit fields..
|
|
simplifyBitfields();
|
|
|
|
if (_settings->terminated())
|
|
return false;
|
|
|
|
// struct simplification "struct S {} s; => struct S { } ; S s ;
|
|
simplifyStructDecl();
|
|
|
|
if (_settings->terminated())
|
|
return false;
|
|
|
|
// x = ({ 123; }); => { x = 123; }
|
|
simplifyAssignmentBlock();
|
|
|
|
if (_settings->terminated())
|
|
return false;
|
|
|
|
simplifyVariableMultipleAssign();
|
|
|
|
// Collapse operator name tokens into single token
|
|
// operator = => operator=
|
|
simplifyOperatorName();
|
|
|
|
// Remove redundant parentheses
|
|
simplifyRedundantParentheses();
|
|
|
|
if (!isC()) {
|
|
// TODO: Only simplify template parameters
|
|
for (Token *tok = list.front(); tok; tok = tok->next())
|
|
while (TemplateSimplifier::simplifyNumericCalculations(tok))
|
|
;
|
|
|
|
// Handle templates..
|
|
simplifyTemplates();
|
|
|
|
// The simplifyTemplates have inner loops
|
|
if (_settings->terminated())
|
|
return false;
|
|
|
|
// sometimes the "simplifyTemplates" fail and then unsimplified
|
|
// function calls etc remain. These have the "wrong" syntax. So
|
|
// this function will just fix so that the syntax is corrected.
|
|
validate(); // #6847 - invalid code
|
|
TemplateSimplifier::cleanupAfterSimplify(list.front());
|
|
}
|
|
|
|
// Simplify pointer to standard types (C only)
|
|
simplifyPointerToStandardType();
|
|
|
|
// simplify function pointers
|
|
simplifyFunctionPointers();
|
|
|
|
// Change initialisation of variable to assignment
|
|
simplifyInitVar();
|
|
|
|
// Split up variable declarations.
|
|
simplifyVarDecl(false);
|
|
|
|
validate(); // #6772 "segmentation fault (invalid code) in Tokenizer::setVarId"
|
|
|
|
if (m_timerResults) {
|
|
Timer t("Tokenizer::tokenize::setVarId", _settings->showtime, m_timerResults);
|
|
setVarId();
|
|
} else {
|
|
setVarId();
|
|
}
|
|
|
|
// Link < with >
|
|
createLinks2();
|
|
|
|
// specify array size
|
|
arraySize();
|
|
|
|
// The simplify enum might have inner loops
|
|
if (_settings->terminated())
|
|
return false;
|
|
|
|
// Add std:: in front of std classes, when using namespace std; was given
|
|
simplifyNamespaceStd();
|
|
|
|
// Change initialisation of variable to assignment
|
|
simplifyInitVar();
|
|
|
|
// Convert e.g. atol("0") into 0
|
|
simplifyMathFunctions();
|
|
|
|
simplifyDoublePlusAndDoubleMinus();
|
|
|
|
simplifyArrayAccessSyntax();
|
|
|
|
Token::assignProgressValues(list.front());
|
|
|
|
removeRedundantSemicolons();
|
|
|
|
simplifyParameterVoid();
|
|
|
|
simplifyRedundantConsecutiveBraces();
|
|
|
|
simplifyEmptyNamespaces();
|
|
|
|
elseif();
|
|
|
|
SimplifyNamelessRValueReferences();
|
|
|
|
|
|
validate();
|
|
return true;
|
|
}
|
|
|
|
bool Tokenizer::simplifyTokenList2()
|
|
{
|
|
// clear the _functionList so it can't contain dead pointers
|
|
deleteSymbolDatabase();
|
|
|
|
// Clear AST. It will be created again at the end of this function.
|
|
for (Token *tok = list.front(); tok; tok = tok->next())
|
|
tok->clearAst();
|
|
|
|
// f(x=g()) => x=g(); f(x)
|
|
simplifyAssignmentInFunctionCall();
|
|
|
|
// ";a+=b;" => ";a=a+b;"
|
|
simplifyCompoundAssignment();
|
|
|
|
simplifyCharAt();
|
|
|
|
// simplify references
|
|
simplifyReference();
|
|
|
|
simplifyStd();
|
|
|
|
if (_settings->terminated())
|
|
return false;
|
|
|
|
simplifySizeof();
|
|
|
|
simplifyUndefinedSizeArray();
|
|
|
|
simplifyCasts();
|
|
|
|
// Simplify simple calculations before replace constants, this allows the replacement of constants that are calculated
|
|
// e.g. const static int value = sizeof(X)/sizeof(Y);
|
|
simplifyCalculations();
|
|
|
|
if (_settings->terminated())
|
|
return false;
|
|
|
|
// Replace "*(ptr + num)" => "ptr[num]"
|
|
simplifyOffsetPointerDereference();
|
|
|
|
// Replace "&str[num]" => "(str + num)"
|
|
simplifyOffsetPointerReference();
|
|
|
|
removeRedundantAssignment();
|
|
|
|
simplifyRealloc();
|
|
|
|
// Change initialisation of variable to assignment
|
|
simplifyInitVar();
|
|
|
|
// Simplify variable declarations
|
|
simplifyVarDecl(false);
|
|
|
|
simplifyErrNoInWhile();
|
|
simplifyIfAndWhileAssign();
|
|
simplifyRedundantParentheses();
|
|
simplifyNestedStrcat();
|
|
simplifyFuncInWhile();
|
|
|
|
simplifyIfAndWhileAssign();
|
|
|
|
// replace strlen(str)
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "strlen ( %str% )")) {
|
|
tok->str(MathLib::toString(Token::getStrLength(tok->tokAt(2))));
|
|
tok->deleteNext(3);
|
|
}
|
|
}
|
|
|
|
bool modified = true;
|
|
while (modified) {
|
|
if (_settings->terminated())
|
|
return false;
|
|
|
|
modified = false;
|
|
modified |= simplifyConditions();
|
|
modified |= simplifyFunctionReturn();
|
|
modified |= simplifyKnownVariables();
|
|
modified |= simplifyStrlen();
|
|
|
|
modified |= removeRedundantConditions();
|
|
modified |= simplifyRedundantParentheses();
|
|
modified |= simplifyConstTernaryOp();
|
|
modified |= simplifyCalculations();
|
|
validate();
|
|
}
|
|
|
|
// simplify redundant loops
|
|
simplifyWhile0();
|
|
removeRedundantFor();
|
|
|
|
// Remove redundant parentheses in return..
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
while (Token::simpleMatch(tok, "return (")) {
|
|
Token *tok2 = tok->next()->link();
|
|
if (Token::simpleMatch(tok2, ") ;")) {
|
|
tok->deleteNext();
|
|
tok2->deleteThis();
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
simplifyReturnStrncat();
|
|
|
|
removeRedundantAssignment();
|
|
|
|
simplifyComma();
|
|
|
|
removeRedundantSemicolons();
|
|
|
|
simplifyFlowControl();
|
|
|
|
simplifyRedundantConsecutiveBraces();
|
|
|
|
simplifyEmptyNamespaces();
|
|
|
|
simplifyMathFunctions();
|
|
|
|
validate();
|
|
|
|
Token::assignProgressValues(list.front());
|
|
|
|
list.createAst();
|
|
// skipping this here may help improve performance. Might be enabled later on demand. #7208
|
|
// list.validateAst();
|
|
|
|
// Create symbol database and then remove const keywords
|
|
createSymbolDatabase();
|
|
SymbolDatabase::setValueTypeInTokenList(list.front(), isCPP(), _settings->defaultSign, &_settings->library);
|
|
|
|
ValueFlow::setValues(&list, _symbolDatabase, _errorLogger, _settings);
|
|
|
|
if (_settings->terminated())
|
|
return false;
|
|
|
|
printDebugOutput(2);
|
|
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------
|
|
|
|
void Tokenizer::printDebugOutput(unsigned int simplification) const
|
|
{
|
|
const bool debug = (simplification != 1U && _settings->debug) ||
|
|
(simplification != 2U && _settings->debugnormal);
|
|
|
|
if (debug && list.front()) {
|
|
list.front()->printOut(0, list.getFiles());
|
|
|
|
if (_settings->xml)
|
|
std::cout << "<debug>" << std::endl;
|
|
|
|
if (_symbolDatabase) {
|
|
if (_settings->xml)
|
|
_symbolDatabase->printXml(std::cout);
|
|
else if (_settings->verbose) {
|
|
_symbolDatabase->printOut("Symbol database");
|
|
}
|
|
}
|
|
|
|
if (_settings->verbose)
|
|
list.front()->printAst(_settings->verbose, _settings->xml, std::cout);
|
|
|
|
list.front()->printValueFlow(_settings->xml, std::cout);
|
|
|
|
if (_settings->xml)
|
|
std::cout << "</debug>" << std::endl;
|
|
}
|
|
|
|
if (simplification == 2U && _settings->debugwarnings) {
|
|
printUnknownTypes();
|
|
|
|
// #5054 - the typeStartToken() should come before typeEndToken()
|
|
for (unsigned int varid = 1; varid < _symbolDatabase->getVariableListSize(); varid++) {
|
|
const Variable *var = _symbolDatabase->getVariableFromVarId(varid);
|
|
if (!var)
|
|
continue;
|
|
|
|
const Token * typetok = var->typeStartToken();
|
|
while (typetok && typetok != var->typeEndToken())
|
|
typetok = typetok->next();
|
|
|
|
if (typetok != var->typeEndToken()) {
|
|
reportError(var->typeStartToken(),
|
|
Severity::debug,
|
|
"debug",
|
|
"Variable::typeStartToken() of variable '" + var->name() + "' is not located before Variable::typeEndToken(). The location of the typeStartToken() is '" + var->typeStartToken()->str() + "' at line " + MathLib::toString(var->typeStartToken()->linenr()));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::dump(std::ostream &out) const
|
|
{
|
|
// Create a xml data dump.
|
|
// The idea is not that this will be readable for humans. It's a
|
|
// data dump that 3rd party tools could load and get useful info from.
|
|
|
|
// tokens..
|
|
out << " <tokenlist>" << std::endl;
|
|
for (const Token *tok = list.front(); tok; tok = tok->next()) {
|
|
out << " <token id=\"" << tok << "\" file=\"" << ErrorLogger::toxml(list.file(tok)) << "\" linenr=\"" << tok->linenr() << '\"';
|
|
out << " str=\"" << ErrorLogger::toxml(tok->str()) << '\"';
|
|
out << " scope=\"" << tok->scope() << '\"';
|
|
if (tok->isName())
|
|
out << " type=\"name\"";
|
|
else if (tok->isNumber()) {
|
|
out << " type=\"number\"";
|
|
if (MathLib::isInt(tok->str()))
|
|
out << " isInt=\"True\"";
|
|
if (MathLib::isFloat(tok->str()))
|
|
out << " isFloat=\"True\"";
|
|
} else if (tok->tokType() == Token::eString)
|
|
out << " type=\"string\" strlen=\"" << Token::getStrLength(tok) << '\"';
|
|
else if (tok->tokType() == Token::eChar)
|
|
out << " type=\"char\"";
|
|
else if (tok->isBoolean())
|
|
out << " type=\"boolean\"";
|
|
else if (tok->isOp()) {
|
|
out << " type=\"op\"";
|
|
if (tok->isArithmeticalOp())
|
|
out << " isArithmeticalOp=\"True\"";
|
|
else if (tok->isAssignmentOp())
|
|
out << " isAssignmentOp=\"True\"";
|
|
else if (tok->isComparisonOp())
|
|
out << " isComparisonOp=\"True\"";
|
|
else if (tok->tokType() == Token::eLogicalOp)
|
|
out << " isLogicalOp=\"True\"";
|
|
}
|
|
if (tok->link())
|
|
out << " link=\"" << tok->link() << '\"';
|
|
if (tok->varId() > 0U)
|
|
out << " varId=\"" << MathLib::toString(tok->varId()) << '\"';
|
|
if (tok->variable())
|
|
out << " variable=\"" << tok->variable() << '\"';
|
|
if (tok->function())
|
|
out << " function=\"" << tok->function() << '\"';
|
|
if (!tok->values.empty())
|
|
out << " values=\"" << &tok->values << '\"';
|
|
if (tok->type())
|
|
out << " type-scope=\"" << tok->type()->classScope << '\"';
|
|
if (tok->astParent())
|
|
out << " astParent=\"" << tok->astParent() << '\"';
|
|
if (tok->astOperand1())
|
|
out << " astOperand1=\"" << tok->astOperand1() << '\"';
|
|
if (tok->astOperand2())
|
|
out << " astOperand2=\"" << tok->astOperand2() << '\"';
|
|
out << "/>" << std::endl;
|
|
}
|
|
out << " </tokenlist>" << std::endl;
|
|
|
|
_symbolDatabase->printXml(out);
|
|
list.front()->printValueFlow(true, out);
|
|
}
|
|
|
|
void Tokenizer::removeMacrosInGlobalScope()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->str() == "(") {
|
|
tok = tok->link();
|
|
if (Token::Match(tok, ") %type% {") &&
|
|
!Token::Match(tok->next(), "const|namespace|class|struct|union|noexcept"))
|
|
tok->deleteNext();
|
|
}
|
|
|
|
if ((!tok->previous() || Token::Match(tok->previous(), "[;{}]")) &&
|
|
Token::Match(tok, "%type%") && tok->isUpperCaseName()) {
|
|
const Token *tok2 = tok->next();
|
|
if (tok2 && tok2->str() == "(")
|
|
tok2 = tok2->link()->next();
|
|
|
|
// remove unknown macros before namespace|class|struct|union
|
|
if (Token::Match(tok2, "namespace|class|struct|union")) {
|
|
// is there a "{" for?
|
|
const Token *tok3 = tok2;
|
|
while (tok3 && !Token::Match(tok3,"[;{}()]"))
|
|
tok3 = tok3->next();
|
|
if (tok3 && tok3->str() == "{") {
|
|
Token::eraseTokens(tok, tok2);
|
|
tok->deleteThis();
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// replace unknown macros before foo(
|
|
if (Token::Match(tok2, "%type% (") && isFunctionHead(tok2->next(), "{")) {
|
|
std::string typeName;
|
|
for (const Token* tok3 = tok; tok3 != tok2; tok3 = tok3->next())
|
|
typeName += tok3->str();
|
|
Token::eraseTokens(tok, tok2);
|
|
tok->str(typeName);
|
|
}
|
|
|
|
// remove unknown macros before foo::foo(
|
|
if (Token::Match(tok2, "%type% :: %type%")) {
|
|
const Token *tok3 = tok2;
|
|
while (Token::Match(tok3, "%type% :: %type% ::"))
|
|
tok3 = tok3->tokAt(2);
|
|
if (Token::Match(tok3, "%type% :: %type% (") && tok3->str() == tok3->strAt(2)) {
|
|
Token::eraseTokens(tok, tok2);
|
|
tok->deleteThis();
|
|
}
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// Skip executable scopes
|
|
if (tok->str() == "{") {
|
|
const Token *prev = tok->previous();
|
|
while (prev && prev->isName())
|
|
prev = prev->previous();
|
|
if (prev && prev->str() == ")")
|
|
tok = tok->link();
|
|
}
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
void Tokenizer::removeMacroInClassDef()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "class|struct %name% %name% {|:") &&
|
|
(tok->next()->isUpperCaseName() || tok->tokAt(2)->isUpperCaseName())) {
|
|
if (tok->next()->isUpperCaseName() && !tok->tokAt(2)->isUpperCaseName())
|
|
tok->deleteNext();
|
|
else if (!tok->next()->isUpperCaseName() && tok->tokAt(2)->isUpperCaseName())
|
|
tok->next()->deleteNext();
|
|
}
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
void Tokenizer::removeMacroInVarDecl()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "[;{}] %name% (") && tok->next() && tok->next()->isUpperCaseName()) {
|
|
// goto ')' parentheses
|
|
const Token *tok2 = tok;
|
|
int parlevel = 0;
|
|
while (tok2) {
|
|
if (tok2->str() == "(")
|
|
++parlevel;
|
|
else if (tok2->str() == ")") {
|
|
if (--parlevel <= 0)
|
|
break;
|
|
}
|
|
tok2 = tok2->next();
|
|
}
|
|
tok2 = tok2 ? tok2->next() : nullptr;
|
|
|
|
// check if this is a variable declaration..
|
|
const Token *tok3 = tok2;
|
|
while (tok3 && tok3->isUpperCaseName())
|
|
tok3 = tok3->next();
|
|
if (tok3 && (tok3->isStandardType() || Token::Match(tok3,"const|static|struct|union|class")))
|
|
Token::eraseTokens(tok,tok2);
|
|
}
|
|
}
|
|
}
|
|
//---------------------------------------------------------------------------
|
|
|
|
void Tokenizer::removeRedundantAssignment()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->str() == "{")
|
|
tok = tok->link();
|
|
|
|
Token * start = const_cast<Token *>(startOfExecutableScope(tok));
|
|
if (start) {
|
|
tok = start->previous();
|
|
// parse in this function..
|
|
std::set<unsigned int> localvars;
|
|
const Token * const end = tok->next()->link();
|
|
for (Token *tok2 = tok->next(); tok2 && tok2 != end; tok2 = tok2->next()) {
|
|
// skip local class or struct
|
|
if (Token::Match(tok2, "class|struct %type% {|:")) {
|
|
// skip to '{'
|
|
tok2 = tok2->tokAt(2);
|
|
while (tok2 && tok2->str() != "{")
|
|
tok2 = tok2->next();
|
|
|
|
if (tok2)
|
|
tok2 = tok2->link(); // skip local class or struct
|
|
else
|
|
return;
|
|
} else if (Token::Match(tok2, "[;{}] %type% * %name% ;") && tok2->next()->str() != "return") {
|
|
tok2 = tok2->tokAt(3);
|
|
localvars.insert(tok2->varId());
|
|
} else if (Token::Match(tok2, "[;{}] %type% %name% ;") && tok2->next()->isStandardType()) {
|
|
tok2 = tok2->tokAt(2);
|
|
localvars.insert(tok2->varId());
|
|
} else if (tok2->varId() &&
|
|
!Token::Match(tok2->previous(), "[;{}] %name% = %char%|%num%|%name% ;")) {
|
|
localvars.erase(tok2->varId());
|
|
}
|
|
}
|
|
localvars.erase(0);
|
|
if (!localvars.empty()) {
|
|
for (Token *tok2 = tok->next(); tok2 && tok2 != end;) {
|
|
if (Token::Match(tok2, "[;{}] %type% %name% ;") && localvars.find(tok2->tokAt(2)->varId()) != localvars.end()) {
|
|
tok2->deleteNext(3);
|
|
} else if ((Token::Match(tok2, "[;{}] %type% * %name% ;") &&
|
|
localvars.find(tok2->tokAt(3)->varId()) != localvars.end()) ||
|
|
(Token::Match(tok2, "[;{}] %name% = %any% ;") &&
|
|
localvars.find(tok2->next()->varId()) != localvars.end())) {
|
|
tok2->deleteNext(4);
|
|
} else
|
|
tok2 = tok2->next();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyRealloc()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "(|[") ||
|
|
(tok->str() == "{" && tok->previous() && tok->previous()->str() == "="))
|
|
tok = tok->link();
|
|
else if (Token::Match(tok, "[;{}] %name% = realloc (")) {
|
|
tok = tok->tokAt(3);
|
|
if (Token::simpleMatch(tok->next(), "( 0 ,")) {
|
|
//no "x = realloc(0,);"
|
|
if (!Token::simpleMatch(tok->next()->link(), ") ;") || tok->next()->link()->previous() == tok->tokAt(3))
|
|
continue;
|
|
|
|
// delete "0 ,"
|
|
tok->next()->deleteNext(2);
|
|
|
|
// Change function name "realloc" to "malloc"
|
|
tok->str("malloc");
|
|
tok = tok->next()->link();
|
|
} else {
|
|
Token *tok2 = tok->next()->link()->tokAt(-2);
|
|
//no "x = realloc(,0);"
|
|
if (!Token::simpleMatch(tok2, ", 0 ) ;") || tok2 == tok->tokAt(2))
|
|
continue;
|
|
|
|
//remove ", 0"
|
|
tok2 = tok2->previous();
|
|
tok2->deleteNext(2);
|
|
//change "realloc" to "free"
|
|
tok->str("free");
|
|
//insert "0" after "var ="
|
|
tok = tok->previous();
|
|
tok->insertToken("0");
|
|
//move "var = 0" between "free(...)" and ";"
|
|
tok2 = tok2->next();
|
|
Token::move(tok->previous(), tok->next(), tok2);
|
|
//add missing ";" after "free(...)"
|
|
tok2->insertToken(";");
|
|
//goto before last ";" and continue
|
|
tok = tok->next();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyEmptyNamespaces()
|
|
{
|
|
if (isC())
|
|
return;
|
|
|
|
bool goback = false;
|
|
for (Token *tok = list.front(); tok; tok = tok ? tok->next() : nullptr) {
|
|
if (goback) {
|
|
tok = tok->previous();
|
|
goback = false;
|
|
}
|
|
if (Token::Match(tok, "(|[|{")) {
|
|
tok = tok->link();
|
|
continue;
|
|
}
|
|
if (!Token::Match(tok, "namespace %name% {"))
|
|
continue;
|
|
if (tok->strAt(3) == "}") {
|
|
tok->deleteNext(3); // remove '%name% { }'
|
|
if (!tok->previous()) {
|
|
// remove 'namespace' or replace it with ';' if isolated
|
|
tok->deleteThis();
|
|
goback = true;
|
|
} else { // '%any% namespace %any%'
|
|
tok = tok->previous(); // goto previous token
|
|
tok->deleteNext(); // remove next token: 'namespace'
|
|
}
|
|
} else {
|
|
tok = tok->tokAt(2);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyFlowControl()
|
|
{
|
|
for (Token *begin = list.front(); begin; begin = begin->next()) {
|
|
|
|
if (Token::Match(begin, "(|[") ||
|
|
(begin->str() == "{" && begin->previous() && begin->strAt(-1) == "="))
|
|
begin = begin->link();
|
|
|
|
//function scope
|
|
if (!Token::simpleMatch(begin, ") {") && !Token::Match(begin, ") %name% {"))
|
|
continue;
|
|
|
|
Token* end = begin->linkAt(1+(begin->next()->str() == "{" ? 0 : 1));
|
|
unsigned int indentlevel = 0;
|
|
bool stilldead = false;
|
|
|
|
for (Token *tok = begin; tok && tok != end; tok = tok->next()) {
|
|
if (Token::Match(tok, "(|[")) {
|
|
tok = tok->link();
|
|
continue;
|
|
}
|
|
|
|
if (tok->str() == "{") {
|
|
if (tok->previous() && tok->previous()->str() == "=") {
|
|
tok = tok->link();
|
|
continue;
|
|
}
|
|
++indentlevel;
|
|
} else if (tok->str() == "}") {
|
|
if (!indentlevel)
|
|
break;
|
|
--indentlevel;
|
|
if (stilldead) {
|
|
eraseDeadCode(tok, 0);
|
|
if (indentlevel == 1 || tok->next()->str() != "}" || !Token::Match(tok->next()->link()->previous(), ";|{|}|do {"))
|
|
stilldead = false;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (!indentlevel)
|
|
continue;
|
|
|
|
if (Token::Match(tok,"continue|break ;")) {
|
|
tok = tok->next();
|
|
eraseDeadCode(tok, 0);
|
|
|
|
} else if (Token::Match(tok,"return|goto") ||
|
|
(Token::Match(tok->previous(), "[;{}] %name% (") &&
|
|
_settings->library.isnoreturn(tok)) ||
|
|
(isCPP() && tok->str() == "throw")) {
|
|
if (tok->next()->str() == "}")
|
|
syntaxError(tok->next()); // invalid code like in #6731
|
|
//TODO: ensure that we exclude user-defined 'exit|abort|throw', except for 'noreturn'
|
|
//catch the first ';'
|
|
for (Token *tok2 = tok->next(); tok2; tok2 = tok2->next()) {
|
|
if (Token::Match(tok2, "(|[")) {
|
|
tok2 = tok2->link();
|
|
} else if (tok2->str() == ";") {
|
|
tok = tok2;
|
|
eraseDeadCode(tok, 0);
|
|
break;
|
|
} else if (Token::Match(tok2, "[{}]"))
|
|
break;
|
|
}
|
|
//if everything is removed, then remove also the code after an inferior scope
|
|
//only if the actual scope is not special
|
|
if (indentlevel > 1 && tok->next()->str() == "}" && Token::Match(tok->next()->link()->previous(), ";|{|}|do {"))
|
|
stilldead = true;
|
|
}
|
|
}
|
|
begin = end;
|
|
}
|
|
}
|
|
|
|
|
|
bool Tokenizer::removeRedundantConditions()
|
|
{
|
|
// Return value for function. Set to true if there are any simplifications
|
|
bool ret = false;
|
|
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (!Token::Match(tok, "if ( %bool% ) {"))
|
|
continue;
|
|
|
|
// Find matching else
|
|
Token *elseTag = tok->linkAt(4)->next();
|
|
|
|
bool boolValue = (tok->strAt(2) == "true");
|
|
|
|
// Handle if with else
|
|
if (Token::simpleMatch(elseTag, "else {")) {
|
|
// Handle else
|
|
if (boolValue == false) {
|
|
// Convert "if( false ) {aaa;} else {bbb;}" => "{bbb;}"
|
|
|
|
//remove '(false)'
|
|
tok->deleteNext(3);
|
|
//delete dead code inside scope
|
|
eraseDeadCode(tok, elseTag);
|
|
//remove 'else'
|
|
elseTag->deleteThis();
|
|
//remove 'if'
|
|
tok->deleteThis();
|
|
} else {
|
|
// Convert "if( true ) {aaa;} else {bbb;}" => "{aaa;}"
|
|
const Token *end = elseTag->next()->link()->next();
|
|
|
|
// Remove "else { bbb; }"
|
|
elseTag = elseTag->previous();
|
|
eraseDeadCode(elseTag, end);
|
|
|
|
// Remove "if( true )"
|
|
tok->deleteNext(3);
|
|
tok->deleteThis();
|
|
}
|
|
|
|
ret = true;
|
|
}
|
|
|
|
// Handle if without else
|
|
else {
|
|
if (boolValue == false) {
|
|
//remove '(false)'
|
|
tok->deleteNext(3);
|
|
//delete dead code inside scope
|
|
eraseDeadCode(tok, elseTag);
|
|
//remove 'if'
|
|
tok->deleteThis();
|
|
} else {
|
|
// convert "if( true ) {aaa;}" => "{aaa;}"
|
|
tok->deleteNext(3);
|
|
tok->deleteThis();
|
|
}
|
|
|
|
ret = true;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void Tokenizer::removeRedundantFor()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "[;{}] for ( %name% = %num% ; %name% < %num% ; ++| %name% ++| ) {") ||
|
|
Token::Match(tok, "[;{}] for ( %type% %name% = %num% ; %name% < %num% ; ++| %name% ++| ) {")) {
|
|
// Same variable name..
|
|
const Token* varTok = tok->tokAt(3);
|
|
bool type = varTok->next()->isName();
|
|
if (type)
|
|
varTok = varTok->next();
|
|
const std::string varname(varTok->str());
|
|
const unsigned int varid(varTok->varId());
|
|
if (varname != varTok->strAt(4))
|
|
continue;
|
|
const Token *vartok2 = tok->linkAt(2)->previous();
|
|
if (vartok2->str() == "++")
|
|
vartok2 = vartok2->previous();
|
|
else if (vartok2->strAt(-1) != "++")
|
|
continue;
|
|
if (varname != vartok2->str())
|
|
continue;
|
|
|
|
// Check that the difference of the numeric values is 1
|
|
const MathLib::bigint num1(MathLib::toLongNumber(varTok->strAt(2)));
|
|
const MathLib::bigint num2(MathLib::toLongNumber(varTok->strAt(6)));
|
|
if (num1 + 1 != num2)
|
|
continue;
|
|
|
|
// check how loop variable is used in loop..
|
|
bool read = false;
|
|
bool write = false;
|
|
const Token* end = tok->linkAt(2)->next()->link();
|
|
for (const Token *tok2 = tok->linkAt(2); tok2 != end; tok2 = tok2->next()) {
|
|
if (tok2->str() == varname) {
|
|
if (tok2->previous()->isArithmeticalOp() &&
|
|
tok2->next() &&
|
|
(tok2->next()->isArithmeticalOp() || tok2->next()->str() == ";")) {
|
|
read = true;
|
|
} else {
|
|
read = write = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Simplify loop if loop variable isn't written
|
|
if (!write) {
|
|
Token* bodyBegin = tok->linkAt(2)->next();
|
|
// remove "for ("
|
|
tok->deleteNext(2);
|
|
|
|
// If loop variable is read then keep assignment before
|
|
// loop body..
|
|
if (type) {
|
|
tok->insertToken("{");
|
|
Token::createMutualLinks(tok->next(), bodyBegin->link());
|
|
bodyBegin->deleteThis();
|
|
tok = tok->tokAt(6);
|
|
} else if (read) {
|
|
// goto ";"
|
|
tok = tok->tokAt(4);
|
|
} else {
|
|
// remove "x = 0 ;"
|
|
tok->deleteNext(4);
|
|
}
|
|
|
|
// remove "x < 1 ; x ++ )"
|
|
tok->deleteNext(7);
|
|
|
|
if (!type) {
|
|
// Add assignment after the loop body so the loop variable
|
|
// get the correct end value
|
|
Token *tok2 = tok->next()->link();
|
|
tok2->insertToken(";");
|
|
tok2->insertToken(MathLib::toString(num2));
|
|
tok2->insertToken("=");
|
|
tok2->insertToken(varname);
|
|
tok2->next()->varId(varid);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void Tokenizer::removeRedundantSemicolons()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->link() && tok->str() == "(") {
|
|
tok = tok->link();
|
|
continue;
|
|
}
|
|
for (;;) {
|
|
if (Token::simpleMatch(tok, "; ;")) {
|
|
tok->deleteNext();
|
|
} else if (Token::simpleMatch(tok, "; { ; }")) {
|
|
tok->deleteNext(3);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
bool Tokenizer::simplifyAddBraces()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
Token const * tokRet=simplifyAddBracesToCommand(tok);
|
|
if (!tokRet)
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
Token *Tokenizer::simplifyAddBracesToCommand(Token *tok)
|
|
{
|
|
Token * tokEnd=tok;
|
|
if (Token::Match(tok,"for|switch|BOOST_FOREACH")) {
|
|
tokEnd=simplifyAddBracesPair(tok,true);
|
|
} else if (tok->str()=="while") {
|
|
Token *tokPossibleDo=tok->previous();
|
|
if (tokPossibleDo &&
|
|
tokPossibleDo->str()=="}")
|
|
tokPossibleDo=tokPossibleDo->link();
|
|
if (!tokPossibleDo ||
|
|
tokPossibleDo->strAt(-1) != "do")
|
|
tokEnd=simplifyAddBracesPair(tok,true);
|
|
} else if (tok->str()=="do") {
|
|
tokEnd=simplifyAddBracesPair(tok,false);
|
|
if (tokEnd!=tok) {
|
|
// walk on to next token, i.e. "while"
|
|
// such that simplifyAddBracesPair does not close other braces
|
|
// before the "while"
|
|
if (tokEnd) {
|
|
tokEnd=tokEnd->next();
|
|
if (!tokEnd || tokEnd->str()!="while") // no while
|
|
syntaxError(tok);
|
|
}
|
|
}
|
|
} else if (tok->str()=="if") {
|
|
tokEnd=simplifyAddBracesPair(tok,true);
|
|
if (!tokEnd)
|
|
return nullptr;
|
|
if (tokEnd->strAt(1) == "else") {
|
|
Token * tokEndNextNext= tokEnd->tokAt(2);
|
|
if (!tokEndNextNext || tokEndNextNext->str() == "}")
|
|
syntaxError(tokEndNextNext);
|
|
if (tokEndNextNext->str() == "if")
|
|
// do not change "else if ..." to "else { if ... }"
|
|
tokEnd=simplifyAddBracesToCommand(tokEndNextNext);
|
|
else
|
|
tokEnd=simplifyAddBracesPair(tokEnd->next(),false);
|
|
}
|
|
}
|
|
|
|
return tokEnd;
|
|
}
|
|
|
|
Token *Tokenizer::simplifyAddBracesPair(Token *tok, bool commandWithCondition)
|
|
{
|
|
Token * tokCondition=tok->next();
|
|
if (!tokCondition) // Missing condition
|
|
return tok;
|
|
|
|
Token *tokAfterCondition=tokCondition;
|
|
if (commandWithCondition) {
|
|
if (tokCondition->str()=="(")
|
|
tokAfterCondition=tokCondition->link();
|
|
else
|
|
syntaxError(tok); // Bad condition
|
|
|
|
if (!tokAfterCondition || tokAfterCondition->strAt(1) == "]")
|
|
syntaxError(tok); // Bad condition
|
|
|
|
tokAfterCondition=tokAfterCondition->next();
|
|
if (!tokAfterCondition || Token::Match(tokAfterCondition, ")|}|,")) {
|
|
// No tokens left where to add braces around
|
|
return tok;
|
|
}
|
|
}
|
|
Token * tokBracesEnd=nullptr;
|
|
if (tokAfterCondition->str()=="{") {
|
|
// already surrounded by braces
|
|
tokBracesEnd=tokAfterCondition->link();
|
|
} else if (Token::simpleMatch(tokAfterCondition, "try {") &&
|
|
Token::simpleMatch(tokAfterCondition->linkAt(1), "} catch (")) {
|
|
tokAfterCondition->previous()->insertToken("{");
|
|
Token * tokOpenBrace = tokAfterCondition->previous();
|
|
Token * tokEnd = tokAfterCondition->linkAt(1)->linkAt(2)->linkAt(1);
|
|
if (!tokEnd) {
|
|
syntaxError(tokAfterCondition);
|
|
}
|
|
tokEnd->insertToken("}");
|
|
Token * tokCloseBrace = tokEnd->next();
|
|
|
|
Token::createMutualLinks(tokOpenBrace, tokCloseBrace);
|
|
tokBracesEnd = tokCloseBrace;
|
|
} else if (Token::Match(tokAfterCondition, "%name% : {")) {
|
|
tokAfterCondition->previous()->insertToken("{");
|
|
tokAfterCondition->linkAt(2)->insertToken("}");
|
|
tokBracesEnd = tokAfterCondition->linkAt(2)->next();
|
|
Token::createMutualLinks(tokAfterCondition->previous(), tokBracesEnd);
|
|
} else {
|
|
Token * tokEnd = simplifyAddBracesToCommand(tokAfterCondition);
|
|
if (!tokEnd) // Ticket #4887
|
|
return tok;
|
|
if (tokEnd->str()!="}") {
|
|
// Token does not end with brace
|
|
// Look for ; to add own closing brace after it
|
|
while (tokEnd && !Token::Match(tokEnd, ";|)|}")) {
|
|
if (tokEnd->tokType()==Token::eBracket || tokEnd->str() == "(") {
|
|
tokEnd = tokEnd->link();
|
|
if (!tokEnd) {
|
|
// Inner bracket does not close
|
|
return tok;
|
|
}
|
|
}
|
|
tokEnd=tokEnd->next();
|
|
}
|
|
if (!tokEnd || tokEnd->str() != ";") {
|
|
// No trailing ;
|
|
return tok;
|
|
}
|
|
}
|
|
|
|
tokAfterCondition->previous()->insertToken("{");
|
|
Token * tokOpenBrace=tokAfterCondition->previous();
|
|
|
|
tokEnd->insertToken("}");
|
|
Token * TokCloseBrace=tokEnd->next();
|
|
|
|
Token::createMutualLinks(tokOpenBrace,TokCloseBrace);
|
|
tokBracesEnd=TokCloseBrace;
|
|
}
|
|
|
|
return tokBracesEnd;
|
|
}
|
|
|
|
void Tokenizer::simplifyCompoundAssignment()
|
|
{
|
|
// Simplify compound assignments:
|
|
// "a+=b" => "a = a + b"
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (!Token::Match(tok, "[;{}] (| *| (| %name%"))
|
|
continue;
|
|
// backup current token..
|
|
Token * const tok1 = tok;
|
|
|
|
if (tok->next()->str() == "*")
|
|
tok = tok->next();
|
|
|
|
if (tok->next() && tok->next()->str() == "(") {
|
|
tok = tok->next()->link()->next();
|
|
} else {
|
|
// variable..
|
|
tok = tok->tokAt(2);
|
|
while (Token::Match(tok, ". %name%") ||
|
|
Token::Match(tok, "[|(")) {
|
|
if (tok->str() == ".")
|
|
tok = tok->tokAt(2);
|
|
else {
|
|
// goto "]" or ")"
|
|
tok = tok->link();
|
|
|
|
// goto next token..
|
|
tok = tok ? tok->next() : 0;
|
|
}
|
|
}
|
|
}
|
|
if (!tok)
|
|
break;
|
|
|
|
// Is current token at a compound assignment: +=|-=|.. ?
|
|
const std::string &str = tok->str();
|
|
std::string op; // operator used in assignment
|
|
if (tok->isAssignmentOp() && str.size() == 2)
|
|
op = str.substr(0, 1);
|
|
else if (tok->isAssignmentOp() && str.size() == 3)
|
|
op = str.substr(0, 2);
|
|
else {
|
|
tok = tok1;
|
|
continue;
|
|
}
|
|
|
|
// Remove the whole statement if it says: "+=0;", "-=0;", "*=1;" or "/=1;"
|
|
if (Token::Match(tok, "+=|-= 0 ;") ||
|
|
Token::simpleMatch(tok, "|= 0 ;") ||
|
|
Token::Match(tok, "*=|/= 1 ;")) {
|
|
tok = tok1;
|
|
while (tok->next()->str() != ";")
|
|
tok->deleteNext();
|
|
} else {
|
|
// Enclose the rhs in parentheses..
|
|
if (!Token::Match(tok->tokAt(2), "[;)]")) {
|
|
// Only enclose rhs in parentheses if there is some operator
|
|
bool someOperator = false;
|
|
for (Token *tok2 = tok->next(); tok2; tok2 = tok2->next()) {
|
|
if (tok2->str() == "(")
|
|
tok2 = tok2->link();
|
|
|
|
if (Token::Match(tok2->next(), "[;)]")) {
|
|
if (someOperator) {
|
|
tok->insertToken("(");
|
|
tok2->insertToken(")");
|
|
Token::createMutualLinks(tok->next(), tok2->next());
|
|
}
|
|
break;
|
|
}
|
|
|
|
someOperator |= (tok2->isOp() || tok2->str() == "?");
|
|
}
|
|
}
|
|
|
|
// simplify the compound assignment..
|
|
tok->str("=");
|
|
tok->insertToken(op);
|
|
|
|
std::stack<Token *> tokend;
|
|
for (Token *tok2 = tok->previous(); tok2 && tok2 != tok1; tok2 = tok2->previous()) {
|
|
// Don't duplicate ++ and --. Put preincrement in lhs. Put
|
|
// postincrement in rhs.
|
|
if (tok2->tokType() == Token::eIncDecOp) {
|
|
// pre increment/decrement => don't copy
|
|
if (tok2->next()->isName()) {
|
|
continue;
|
|
}
|
|
|
|
// post increment/decrement => move from lhs to rhs
|
|
tok->insertToken(tok2->str());
|
|
tok2->deleteThis();
|
|
continue;
|
|
}
|
|
|
|
// Copy token from lhs to rhs
|
|
tok->insertToken(tok2->str());
|
|
tok->next()->varId(tok2->varId());
|
|
if (Token::Match(tok->next(), "]|)|}"))
|
|
tokend.push(tok->next());
|
|
else if (Token::Match(tok->next(), "(|[|{")) {
|
|
Token::createMutualLinks(tok->next(), tokend.top());
|
|
tokend.pop();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool Tokenizer::simplifyConditions()
|
|
{
|
|
bool ret = false;
|
|
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "! %bool%|%num%")) {
|
|
tok->deleteThis();
|
|
if (Token::Match(tok, "0|false"))
|
|
tok->str("true");
|
|
else
|
|
tok->str("false");
|
|
|
|
ret = true;
|
|
}
|
|
|
|
if (Token::simpleMatch(tok, "&& true &&")) {
|
|
tok->deleteNext(2);
|
|
ret = true;
|
|
}
|
|
|
|
else if (Token::simpleMatch(tok, "|| false ||")) {
|
|
tok->deleteNext(2);
|
|
ret = true;
|
|
}
|
|
|
|
else if (Token::Match(tok, "(|&& true && true &&|)")) {
|
|
tok->deleteNext(2);
|
|
ret = true;
|
|
}
|
|
|
|
else if (Token::Match(tok, "%oror%|( false %oror% false %oror%|)")) {
|
|
tok->deleteNext(2);
|
|
ret = true;
|
|
}
|
|
|
|
else if (Token::simpleMatch(tok, "( true ||") ||
|
|
Token::simpleMatch(tok, "( false &&")) {
|
|
Token::eraseTokens(tok->next(), tok->link());
|
|
ret = true;
|
|
}
|
|
|
|
else if (Token::simpleMatch(tok, "|| true )") ||
|
|
Token::simpleMatch(tok, "&& false )")) {
|
|
tok = tok->next();
|
|
Token::eraseTokens(tok->next()->link(), tok);
|
|
ret = true;
|
|
}
|
|
|
|
else if (Token::simpleMatch(tok, "&& false &&") ||
|
|
Token::simpleMatch(tok, "|| true ||")) {
|
|
//goto '('
|
|
Token *tok2 = tok;
|
|
while (tok2->previous()) {
|
|
if (tok2->previous()->str() == ")")
|
|
tok2 = tok2->previous()->link();
|
|
else {
|
|
tok2 = tok2->previous();
|
|
if (tok2->str() == "(")
|
|
break;
|
|
}
|
|
}
|
|
if (!tok2)
|
|
continue;
|
|
//move tok to 'true|false' position
|
|
tok = tok->next();
|
|
//remove everything before 'true|false'
|
|
Token::eraseTokens(tok2, tok);
|
|
//remove everything after 'true|false'
|
|
Token::eraseTokens(tok, tok2->link());
|
|
ret = true;
|
|
}
|
|
|
|
// Change numeric constant in condition to "true" or "false"
|
|
if (Token::Match(tok, "if|while ( %num% )|%oror%|&&")) {
|
|
tok->tokAt(2)->str((tok->strAt(2) != "0") ? "true" : "false");
|
|
ret = true;
|
|
}
|
|
if (Token::Match(tok, "&&|%oror% %num% )|%oror%|&&")) {
|
|
tok->next()->str((tok->next()->str() != "0") ? "true" : "false");
|
|
ret = true;
|
|
}
|
|
|
|
// Reduce "(%num% == %num%)" => "(true)"/"(false)"
|
|
if (Token::Match(tok, "&&|%oror%|(") &&
|
|
(Token::Match(tok->next(), "%num% %any% %num%") ||
|
|
Token::Match(tok->next(), "%bool% %any% %bool%")) &&
|
|
Token::Match(tok->tokAt(4), "&&|%oror%|)|?")) {
|
|
std::string cmp = tok->strAt(2);
|
|
bool result = false;
|
|
if (tok->next()->isNumber()) {
|
|
// Compare numbers
|
|
|
|
if (cmp == "==" || cmp == "!=") {
|
|
const std::string& op1(tok->next()->str());
|
|
const std::string& op2(tok->strAt(3));
|
|
|
|
bool eq = false;
|
|
if (MathLib::isInt(op1) && MathLib::isInt(op2))
|
|
eq = (MathLib::toLongNumber(op1) == MathLib::toLongNumber(op2));
|
|
else
|
|
eq = (op1 == op2);
|
|
|
|
if (cmp == "==")
|
|
result = eq;
|
|
else
|
|
result = !eq;
|
|
} else {
|
|
const double op1 = MathLib::toDoubleNumber(tok->next()->str());
|
|
const double op2 = MathLib::toDoubleNumber(tok->strAt(3));
|
|
if (cmp == ">=")
|
|
result = (op1 >= op2);
|
|
else if (cmp == ">")
|
|
result = (op1 > op2);
|
|
else if (cmp == "<=")
|
|
result = (op1 <= op2);
|
|
else if (cmp == "<")
|
|
result = (op1 < op2);
|
|
else
|
|
cmp = "";
|
|
}
|
|
} else {
|
|
// Compare boolean
|
|
const bool op1 = (tok->next()->str() == std::string("true"));
|
|
const bool op2 = (tok->strAt(3) == std::string("true"));
|
|
|
|
if (cmp == "==")
|
|
result = (op1 == op2);
|
|
else if (cmp == "!=")
|
|
result = (op1 != op2);
|
|
else if (cmp == ">=")
|
|
result = (op1 >= op2);
|
|
else if (cmp == ">")
|
|
result = (op1 > op2);
|
|
else if (cmp == "<=")
|
|
result = (op1 <= op2);
|
|
else if (cmp == "<")
|
|
result = (op1 < op2);
|
|
else
|
|
cmp = "";
|
|
}
|
|
|
|
if (! cmp.empty()) {
|
|
tok = tok->next();
|
|
tok->deleteNext(2);
|
|
|
|
tok->str(result ? "true" : "false");
|
|
ret = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool Tokenizer::simplifyConstTernaryOp()
|
|
{
|
|
bool ret = false;
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->str() != "?")
|
|
continue;
|
|
|
|
if (!Token::Match(tok->tokAt(-2), "<|=|,|(|[|{|}|;|case|return %bool%|%num%") &&
|
|
!Token::Match(tok->tokAt(-4), "<|=|,|(|[|{|}|;|case|return ( %bool%|%num% )"))
|
|
continue;
|
|
|
|
const int offset = (tok->previous()->str() == ")") ? 2 : 1;
|
|
|
|
bool inTemplateParameter = false;
|
|
if (tok->strAt(-2*offset) == "<") {
|
|
if (isC() || !TemplateSimplifier::templateParameters(tok->tokAt(-2*offset)))
|
|
continue; // '<' is less than; the condition is not a constant
|
|
inTemplateParameter = true;
|
|
}
|
|
|
|
// Find the token ":" then go to the next token
|
|
Token *semicolon = skipTernaryOp(tok);
|
|
if (!semicolon || semicolon->previous()->str() != ":" || !semicolon->next())
|
|
continue;
|
|
|
|
//handle the GNU extension: "x ? : y" <-> "x ? x : y"
|
|
if (semicolon->previous() == tok->next())
|
|
tok->insertToken(tok->strAt(-offset));
|
|
|
|
// go back before the condition, if possible
|
|
tok = tok->tokAt(-2);
|
|
if (offset == 2) {
|
|
// go further back before the "("
|
|
tok = tok->tokAt(-2);
|
|
//simplify the parentheses
|
|
tok->deleteNext();
|
|
tok->next()->deleteNext();
|
|
}
|
|
|
|
if (Token::Match(tok->next(), "false|0")) {
|
|
// Use code after semicolon, remove code before it.
|
|
Token::eraseTokens(tok, semicolon);
|
|
|
|
tok = tok->next();
|
|
ret = true;
|
|
}
|
|
|
|
// The condition is true. Delete the operator after the ":"..
|
|
else {
|
|
// delete the condition token and the "?"
|
|
tok->deleteNext(2);
|
|
|
|
unsigned int ternaryOplevel = 0;
|
|
for (const Token *endTok = semicolon; endTok; endTok = endTok->next()) {
|
|
if (Token::Match(endTok, "(|[|{")) {
|
|
endTok = endTok->link();
|
|
}
|
|
|
|
else if (endTok->str() == "?")
|
|
++ternaryOplevel;
|
|
else if (Token::Match(endTok, ")|}|]|;|,|:|>")) {
|
|
if (endTok->str() == ":" && ternaryOplevel)
|
|
--ternaryOplevel;
|
|
else if (endTok->str() == ">" && !inTemplateParameter)
|
|
;
|
|
else {
|
|
Token::eraseTokens(semicolon->tokAt(-2), endTok);
|
|
ret = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void Tokenizer::simplifyUndefinedSizeArray()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "%type%")) {
|
|
Token *tok2 = tok->next();
|
|
while (tok2 && tok2->str() == "*")
|
|
tok2 = tok2->next();
|
|
if (!Token::Match(tok2, "%name% [ ] ;|["))
|
|
continue;
|
|
|
|
tok = tok2->previous();
|
|
Token *end = tok2->next();
|
|
unsigned int count = 0;
|
|
do {
|
|
end = end->tokAt(2);
|
|
++count;
|
|
} while (Token::Match(end, "[ ] [;=[]"));
|
|
if (Token::Match(end, "[;=]")) {
|
|
do {
|
|
tok2->deleteNext(2);
|
|
tok->insertToken("*");
|
|
} while (--count);
|
|
tok = end;
|
|
} else
|
|
tok = tok->tokAt(3);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyCasts()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
// #2897 : don't remove cast in such cases:
|
|
// *((char *)a + 1) = 0;
|
|
// #3596 : remove cast when casting a function pointer:
|
|
// (*(void (*)(char *))fp)(x);
|
|
if (!tok->isName() &&
|
|
Token::simpleMatch(tok->next(), "* (") &&
|
|
!Token::Match(tok->linkAt(2), ") %name%|&")) {
|
|
tok = tok->linkAt(2);
|
|
continue;
|
|
}
|
|
// #3935 : don't remove cast in such cases:
|
|
// ((char *)a)[1] = 0;
|
|
if (tok->str() == "(" && Token::simpleMatch(tok->link(), ") [")) {
|
|
tok = tok->link();
|
|
continue;
|
|
}
|
|
// #4164 : ((unsigned char)1) => (1)
|
|
if (Token::Match(tok->next(), "( %type% ) %num%") && tok->next()->link()->previous()->isStandardType()) {
|
|
const MathLib::bigint value = MathLib::toLongNumber(tok->next()->link()->next()->str());
|
|
unsigned int bits = _settings->char_bit * _typeSize[tok->next()->link()->previous()->str()];
|
|
if (!tok->tokAt(2)->isUnsigned() && bits > 0)
|
|
bits--;
|
|
if (bits < 31 && value >= 0 && value < (1LL << bits)) {
|
|
tok->linkAt(1)->next()->isCast(true);
|
|
Token::eraseTokens(tok, tok->next()->link()->next());
|
|
}
|
|
continue;
|
|
}
|
|
|
|
while ((Token::Match(tok->next(), "( %type% *| *| *|&| ) *|&| %name%") && (tok->str() != ")" || tok->tokAt(2)->isStandardType())) ||
|
|
Token::Match(tok->next(), "( const| %type% * *| *|&| ) *|&| %name%") ||
|
|
Token::Match(tok->next(), "( const| %type% %type% *| *| *|&| ) *|&| %name%") ||
|
|
(!tok->isName() && (Token::Match(tok->next(), "( %type% * *| *|&| ) (") ||
|
|
Token::Match(tok->next(), "( const| %type% %type% * *| *|&| ) (")))) {
|
|
if (tok->isName() && tok->str() != "return")
|
|
break;
|
|
|
|
if (isCPP() && tok->strAt(-1) == "operator")
|
|
break;
|
|
|
|
// Remove cast..
|
|
Token::eraseTokens(tok, tok->next()->link()->next());
|
|
|
|
// Set isCasted flag.
|
|
Token *tok2 = tok->next();
|
|
if (!Token::Match(tok2, "%name% [|."))
|
|
tok2->isCast(true);
|
|
else {
|
|
// TODO: handle more complex expressions
|
|
tok2->next()->isCast(true);
|
|
}
|
|
|
|
// Remove '* &'
|
|
if (Token::simpleMatch(tok, "* &")) {
|
|
tok->deleteNext();
|
|
tok->deleteThis();
|
|
}
|
|
|
|
if (tok->str() == ")" && tok->link()->previous()) {
|
|
// If there was another cast before this, go back
|
|
// there to check it also. e.g. "(int)(char)x"
|
|
tok = tok->link()->previous();
|
|
}
|
|
}
|
|
|
|
// Replace pointer casts of 0.. "(char *)0" => "0"
|
|
while (Token::Match(tok->next(), "( %type% %type%| * *| ) 0")) {
|
|
tok->linkAt(1)->next()->isCast(true);
|
|
Token::eraseTokens(tok, tok->next()->link()->next());
|
|
if (tok->str() == ")" && tok->link()->previous()) {
|
|
// If there was another cast before this, go back
|
|
// there to check it also. e.g. "(char*)(char*)0"
|
|
tok = tok->link()->previous();
|
|
}
|
|
}
|
|
|
|
if (Token::Match(tok->next(), "dynamic_cast|reinterpret_cast|const_cast|static_cast <")) {
|
|
Token *tok2 = tok->linkAt(2);
|
|
if (!Token::simpleMatch(tok2, "> ("))
|
|
break;
|
|
|
|
tok2->tokAt(2)->isCast(true);
|
|
Token::eraseTokens(tok, tok2->next());
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void Tokenizer::simplifyFunctionParameters()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->link() && Token::Match(tok, "{|[|(")) {
|
|
tok = tok->link();
|
|
}
|
|
|
|
// Find the function e.g. foo( x ) or foo( x, y )
|
|
else if (Token::Match(tok, "%name% ( %name% [,)]") &&
|
|
!(tok->strAt(-1) == ":" || tok->strAt(-1) == ",")) {
|
|
// We have found old style function, now we need to change it
|
|
|
|
// First step: Get list of argument names in parentheses
|
|
std::map<std::string, Token *> argumentNames;
|
|
bool bailOut = false;
|
|
Token * tokparam = nullptr;
|
|
|
|
//take count of the function name..
|
|
const std::string& funcName(tok->str());
|
|
|
|
//floating token used to check for parameters
|
|
Token *tok1 = tok;
|
|
|
|
while (nullptr != (tok1 = tok1->tokAt(2))) {
|
|
if (!Token::Match(tok1, "%name% [,)]")) {
|
|
bailOut = true;
|
|
break;
|
|
}
|
|
|
|
//same parameters: take note of the parameter
|
|
if (argumentNames.find(tok1->str()) != argumentNames.end())
|
|
tokparam = tok1;
|
|
else if (tok1->str() != funcName)
|
|
argumentNames[tok1->str()] = tok1;
|
|
else {
|
|
if (tok1->next()->str() == ")") {
|
|
if (tok1->previous()->str() == ",") {
|
|
tok1 = tok1->tokAt(-2);
|
|
tok1->deleteNext(2);
|
|
} else {
|
|
tok1 = tok1->previous();
|
|
tok1->deleteNext();
|
|
bailOut = true;
|
|
break;
|
|
}
|
|
} else {
|
|
tok1 = tok1->tokAt(-2);
|
|
tok1->next()->deleteNext(2);
|
|
}
|
|
}
|
|
|
|
if (tok1->next()->str() == ")") {
|
|
tok1 = tok1->tokAt(2);
|
|
//expect at least a type name after round brace..
|
|
if (!tok1 || !tok1->isName())
|
|
bailOut = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
//goto '('
|
|
tok = tok->next();
|
|
|
|
if (bailOut) {
|
|
tok = tok->link();
|
|
continue;
|
|
}
|
|
|
|
tok1 = tok->link()->next();
|
|
|
|
// there should be the sequence '; {' after the round parentheses
|
|
for (const Token* tok2 = tok1; tok2; tok2 = tok2->next()) {
|
|
if (Token::simpleMatch(tok2, "; {"))
|
|
break;
|
|
else if (tok2->str() == "{") {
|
|
bailOut = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (bailOut) {
|
|
tok = tok->link();
|
|
continue;
|
|
}
|
|
|
|
// Last step: check out if the declarations between ')' and '{' match the parameters list
|
|
std::map<std::string, Token *> argumentNames2;
|
|
|
|
while (tok1 && tok1->str() != "{") {
|
|
if (Token::Match(tok1, "(|)")) {
|
|
bailOut = true;
|
|
break;
|
|
}
|
|
if (tok1->str() == ";") {
|
|
if (tokparam) {
|
|
syntaxError(tokparam);
|
|
}
|
|
Token *tok2 = tok1->previous();
|
|
while (tok2->str() == "]")
|
|
tok2 = tok2->link()->previous();
|
|
|
|
//it should be a name..
|
|
if (!tok2->isName()) {
|
|
bailOut = true;
|
|
break;
|
|
}
|
|
|
|
if (argumentNames2.find(tok2->str()) != argumentNames2.end()) {
|
|
//same parameter names...
|
|
syntaxError(tok1);
|
|
} else
|
|
argumentNames2[tok2->str()] = tok2;
|
|
|
|
if (argumentNames.find(tok2->str()) == argumentNames.end()) {
|
|
//non-matching parameter... bailout
|
|
bailOut = true;
|
|
break;
|
|
}
|
|
}
|
|
tok1 = tok1->next();
|
|
}
|
|
|
|
if (bailOut || !tok1) {
|
|
tok = tok->link();
|
|
continue;
|
|
}
|
|
|
|
//the two containers may not hold the same size...
|
|
//in that case, the missing parameters are defined as 'int'
|
|
if (argumentNames.size() != argumentNames2.size()) {
|
|
//move back 'tok1' to the last ';'
|
|
tok1 = tok1->previous();
|
|
std::map<std::string, Token *>::iterator it;
|
|
for (it = argumentNames.begin(); it != argumentNames.end(); ++it) {
|
|
if (argumentNames2.find(it->first) == argumentNames2.end()) {
|
|
//add the missing parameter argument declaration
|
|
tok1->insertToken(";");
|
|
tok1->insertToken(it->first);
|
|
//register the change inside argumentNames2
|
|
argumentNames2[it->first] = tok1->next();
|
|
tok1->insertToken("int");
|
|
}
|
|
}
|
|
}
|
|
|
|
while (tok->str() != ")") {
|
|
//initialize start and end tokens to be moved
|
|
Token *declStart = argumentNames2[tok->next()->str()];
|
|
Token *declEnd = declStart;
|
|
while (declStart->previous()->str() != ";" && declStart->previous()->str() != ")")
|
|
declStart = declStart->previous();
|
|
while (declEnd->next()->str() != ";" && declEnd->next()->str() != "{")
|
|
declEnd = declEnd->next();
|
|
|
|
//remove ';' after declaration
|
|
declEnd->deleteNext();
|
|
|
|
//replace the parameter name in the parentheses with all the declaration
|
|
Token::replace(tok->next(), declStart, declEnd);
|
|
|
|
//since there are changes to tokens, put tok where tok1 is
|
|
tok = declEnd->next();
|
|
}
|
|
//goto forward and continue
|
|
tok = tok->next()->link();
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyPointerToStandardType()
|
|
{
|
|
if (!isC())
|
|
return;
|
|
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (!Token::Match(tok, "& %name% [ 0 ] !!["))
|
|
continue;
|
|
|
|
// Remove '[ 0 ]' suffix
|
|
tok->next()->eraseTokens(tok->next(), tok->tokAt(5));
|
|
// Remove '&' prefix
|
|
tok = tok->previous();
|
|
if (!tok)
|
|
break;
|
|
tok->deleteNext();
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyFunctionPointers()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
// #2873 - do not simplify function pointer usage here:
|
|
// (void)(xy(*p)(0));
|
|
if (Token::simpleMatch(tok, ") (")) {
|
|
tok = tok->next()->link();
|
|
continue;
|
|
}
|
|
|
|
// check for function pointer cast
|
|
if (Token::Match(tok, "( %type% %type%| *| *| ( * ) (") ||
|
|
Token::Match(tok, "static_cast < %type% %type%| *| *| ( * ) (")) {
|
|
Token *tok1 = tok;
|
|
|
|
if (isCPP() && tok1->str() == "static_cast")
|
|
tok1 = tok1->next();
|
|
|
|
tok1 = tok1->next();
|
|
|
|
if (Token::Match(tok1->next(), "%type%"))
|
|
tok1 = tok1->next();
|
|
|
|
while (tok1->next()->str() == "*")
|
|
tok1 = tok1->next();
|
|
|
|
// check that the cast ends
|
|
if (!Token::Match(tok1->linkAt(4), ") )|>"))
|
|
continue;
|
|
|
|
// ok simplify this function pointer cast to an ordinary pointer cast
|
|
tok1->deleteNext();
|
|
tok1->next()->deleteNext();
|
|
Token::eraseTokens(tok1->next(), tok1->linkAt(2)->next());
|
|
continue;
|
|
}
|
|
|
|
// check for start of statement
|
|
else if (tok->previous() && !Token::Match(tok->previous(), "{|}|;|,|(|public:|protected:|private:"))
|
|
continue;
|
|
|
|
while (Token::Match(tok, "%type%|:: %type%|::"))
|
|
tok = tok->next();
|
|
|
|
Token *tok2 = (tok && tok->isName()) ? tok->next() : nullptr;
|
|
while (Token::Match(tok2, "*|&"))
|
|
tok2 = tok2->next();
|
|
if (!tok2 || tok2->str() != "(")
|
|
continue;
|
|
while (Token::Match(tok2, "(|:: %type%"))
|
|
tok2 = tok2->tokAt(2);
|
|
if (!Token::Match(tok2, "(|:: * *| %name%"))
|
|
continue;
|
|
tok2 = tok2->tokAt(2);
|
|
if (tok2->str() == "*")
|
|
tok2 = tok2->next();
|
|
while (Token::Match(tok2, "%type%|:: %type%|::"))
|
|
tok2 = tok2->next();
|
|
|
|
if (!Token::Match(tok2, "%name% ) (") &&
|
|
!Token::Match(tok2, "%name% [ ] ) (") &&
|
|
!(Token::Match(tok2, "%name% (") && Token::simpleMatch(tok2->linkAt(1), ") ) (")))
|
|
continue;
|
|
|
|
while (tok->str() != "(")
|
|
tok = tok->next();
|
|
|
|
// check that the declaration ends
|
|
if (!tok || !tok->link() || !tok->link()->next()) {
|
|
syntaxError(nullptr);
|
|
}
|
|
Token *endTok = tok->link()->next()->link();
|
|
if (Token::simpleMatch(endTok, ") throw ("))
|
|
endTok = endTok->linkAt(2);
|
|
if (!Token::Match(endTok, ") const| ;|,|)|=|[|{"))
|
|
continue;
|
|
|
|
if (endTok->strAt(1) == "const")
|
|
endTok->deleteNext();
|
|
|
|
// ok simplify this function pointer to an ordinary pointer
|
|
Token::eraseTokens(tok->link(), endTok->next());
|
|
tok->link()->deleteThis();
|
|
while (Token::Match(tok, "( %type% ::"))
|
|
tok->deleteNext(2);
|
|
tok->deleteThis();
|
|
}
|
|
}
|
|
|
|
|
|
bool Tokenizer::simplifyFunctionReturn()
|
|
{
|
|
bool ret = false;
|
|
for (const Token *tok = tokens(); tok; tok = tok->next()) {
|
|
if (tok->str() == "{")
|
|
tok = tok->link();
|
|
|
|
else if (Token::Match(tok, "%name% ( ) { return %bool%|%char%|%num%|%str% ; }") && tok->strAt(-1) != "::") {
|
|
const Token* const any = tok->tokAt(5);
|
|
|
|
const std::string pattern("(|[|=|return|%op% " + tok->str() + " ( ) ;|]|)|%cop%");
|
|
for (Token *tok2 = list.front(); tok2; tok2 = tok2->next()) {
|
|
if (Token::Match(tok2, pattern.c_str())) {
|
|
tok2 = tok2->next();
|
|
tok2->str(any->str());
|
|
tok2->deleteNext(2);
|
|
ret = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void Tokenizer::simplifyVarDecl(bool only_k_r_fpar)
|
|
{
|
|
simplifyVarDecl(list.front(), nullptr, only_k_r_fpar);
|
|
}
|
|
|
|
void Tokenizer::simplifyVarDecl(Token * tokBegin, Token * tokEnd, bool only_k_r_fpar)
|
|
{
|
|
// Split up variable declarations..
|
|
// "int a=4;" => "int a; a=4;"
|
|
bool finishedwithkr = true;
|
|
for (Token *tok = tokBegin; tok != tokEnd; tok = tok->next()) {
|
|
if (Token::simpleMatch(tok, "= {")) {
|
|
tok = tok->next()->link();
|
|
}
|
|
if (!tok) {
|
|
syntaxError(tokBegin);
|
|
}
|
|
if (only_k_r_fpar && finishedwithkr) {
|
|
if (Token::Match(tok, "(|[|{")) {
|
|
tok = tok->link();
|
|
if (tok->next() && Token::Match(tok, ") !!{"))
|
|
tok = tok->next();
|
|
else
|
|
continue;
|
|
} else
|
|
continue;
|
|
} else if (tok->str() == "(") {
|
|
if (isCPP()) {
|
|
for (Token * tok2 = tok; tok2 && tok2 != tok->link(); tok2 = tok2->next()) {
|
|
if (Token::Match(tok2, "[(,] [")) {
|
|
// lambda function at tok2->next()
|
|
// find start of lambda body
|
|
Token * lambdaBody = tok2;
|
|
while (lambdaBody && lambdaBody != tok2->link() && lambdaBody->str() != "{")
|
|
lambdaBody = lambdaBody->next();
|
|
if (lambdaBody && lambdaBody != tok2->link() && lambdaBody->link())
|
|
simplifyVarDecl(lambdaBody, lambdaBody->link()->next(), only_k_r_fpar);
|
|
}
|
|
}
|
|
}
|
|
tok = tok->link();
|
|
}
|
|
|
|
if (!tok)
|
|
syntaxError(nullptr); // #7043 invalid code
|
|
if (tok->previous() && !Token::Match(tok->previous(), "{|}|;|)|public:|protected:|private:"))
|
|
continue;
|
|
|
|
Token *type0 = tok;
|
|
if (!Token::Match(type0, "::|extern| %type%"))
|
|
continue;
|
|
if (Token::Match(type0, "else|return|public:|protected:|private:"))
|
|
continue;
|
|
|
|
bool isconst = false;
|
|
bool isstatic = false;
|
|
Token *tok2 = type0;
|
|
unsigned int typelen = 1;
|
|
|
|
if (Token::Match(tok2, "::|extern")) {
|
|
tok2 = tok2->next();
|
|
typelen++;
|
|
}
|
|
|
|
//check if variable is declared 'const' or 'static' or both
|
|
while (tok2) {
|
|
if (!Token::Match(tok2, "const|static") && Token::Match(tok2, "%type% const|static")) {
|
|
tok2 = tok2->next();
|
|
++typelen;
|
|
}
|
|
|
|
if (tok2->str() == "const")
|
|
isconst = true;
|
|
|
|
else if (tok2->str() == "static")
|
|
isstatic = true;
|
|
|
|
else if (Token::Match(tok2, "%type% :: %type%")) {
|
|
tok2 = tok2->next();
|
|
++typelen;
|
|
}
|
|
|
|
else
|
|
break;
|
|
|
|
if (tok2->strAt(1) == "*")
|
|
break;
|
|
|
|
if (Token::Match(tok2->next(), "& %name% ,"))
|
|
break;
|
|
|
|
tok2 = tok2->next();
|
|
++typelen;
|
|
}
|
|
|
|
// strange looking variable declaration => don't split up.
|
|
if (Token::Match(tok2, "%type% *|&| %name% , %type% *|&| %name%"))
|
|
continue;
|
|
|
|
if (Token::Match(tok2, "struct|union|class %type%")) {
|
|
tok2 = tok2->next();
|
|
++typelen;
|
|
}
|
|
|
|
// check for qualification..
|
|
if (Token::Match(tok2, ":: %type%")) {
|
|
++typelen;
|
|
tok2 = tok2->next();
|
|
}
|
|
|
|
//skip combinations of templates and namespaces
|
|
while (!isC() && (Token::Match(tok2, "%type% <") || Token::Match(tok2, "%type% ::"))) {
|
|
if (tok2->next()->str() == "<" && !TemplateSimplifier::templateParameters(tok2->next())) {
|
|
tok2 = nullptr;
|
|
break;
|
|
}
|
|
typelen += 2;
|
|
tok2 = tok2->tokAt(2);
|
|
if (tok2 && tok2->previous()->str() == "::")
|
|
continue;
|
|
unsigned int indentlevel = 0;
|
|
unsigned int parens = 0;
|
|
|
|
for (Token *tok3 = tok2; tok3; tok3 = tok3->next()) {
|
|
++typelen;
|
|
|
|
if (!parens && tok3->str() == "<") {
|
|
++indentlevel;
|
|
} else if (!parens && tok3->str() == ">") {
|
|
if (indentlevel == 0) {
|
|
tok2 = tok3->next();
|
|
break;
|
|
}
|
|
--indentlevel;
|
|
} else if (!parens && tok3->str() == ">>") {
|
|
if (indentlevel <= 1U) {
|
|
tok2 = tok3->next();
|
|
break;
|
|
}
|
|
indentlevel -= 2;
|
|
} else if (tok3->str() == "(") {
|
|
++parens;
|
|
} else if (tok3->str() == ")") {
|
|
if (!parens) {
|
|
tok2 = nullptr;
|
|
break;
|
|
}
|
|
--parens;
|
|
} else if (tok3->str() == ";") {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (Token::Match(tok2, ":: %type%")) {
|
|
++typelen;
|
|
tok2 = tok2->next();
|
|
}
|
|
}
|
|
|
|
//pattern: "%type% *| ... *| const| %name% ,|="
|
|
if (Token::Match(tok2, "%type%") ||
|
|
(tok2 && tok2->previous() && tok2->previous()->str() == ">")) {
|
|
Token *varName = tok2;
|
|
if (!tok2->previous() || tok2->previous()->str() != ">")
|
|
varName = varName->next();
|
|
else
|
|
--typelen;
|
|
//skip all the pointer part
|
|
bool isPointerOrRef = false;
|
|
while (Token::simpleMatch(varName, "*") || Token::Match(varName, "& %name% ,")) {
|
|
isPointerOrRef = true;
|
|
varName = varName->next();
|
|
}
|
|
|
|
while (Token::Match(varName, "%type% %type%")) {
|
|
if (varName->str() != "const") {
|
|
++typelen;
|
|
}
|
|
varName = varName->next();
|
|
}
|
|
//non-VLA case
|
|
if (Token::Match(varName, "%name% ,|=")) {
|
|
if (varName->str() != "operator") {
|
|
tok2 = varName->next(); // The ',' or '=' token
|
|
|
|
if (tok2->str() == "=" && (isstatic || (isconst && !isPointerOrRef))) {
|
|
//do not split const non-pointer variables..
|
|
while (tok2 && tok2->str() != "," && tok2->str() != ";") {
|
|
if (Token::Match(tok2, "{|(|["))
|
|
tok2 = tok2->link();
|
|
if (!isC() && tok2->str() == "<" && TemplateSimplifier::templateParameters(tok2) > 0) {
|
|
tok2 = tok2->findClosingBracket();
|
|
}
|
|
if (!tok2)
|
|
syntaxError(nullptr); // #6881 invalid code
|
|
tok2 = tok2->next();
|
|
}
|
|
if (tok2 && tok2->str() == ";")
|
|
tok2 = nullptr;
|
|
}
|
|
} else
|
|
tok2 = nullptr;
|
|
}
|
|
|
|
//VLA case
|
|
else if (Token::Match(varName, "%name% [")) {
|
|
tok2 = varName->next();
|
|
|
|
while (Token::Match(tok2->link(), "] ,|=|["))
|
|
tok2 = tok2->link()->next();
|
|
if (!Token::Match(tok2, "=|,"))
|
|
tok2 = nullptr;
|
|
if (tok2 && tok2->str() == "=") {
|
|
while (tok2 && tok2->str() != "," && tok2->str() != ";") {
|
|
if (Token::Match(tok2, "{|(|["))
|
|
tok2 = tok2->link();
|
|
tok2 = tok2->next();
|
|
}
|
|
if (tok2 && tok2->str() == ";")
|
|
tok2 = nullptr;
|
|
}
|
|
}
|
|
|
|
// brace initialization
|
|
else if (Token::Match(varName, "%name% {")) {
|
|
tok2 = varName->next();
|
|
tok2 = tok2->link();
|
|
if (tok2)
|
|
tok2 = tok2->next();
|
|
if (tok2 && tok2->str() != ",")
|
|
tok2 = nullptr;
|
|
}
|
|
|
|
// parenthesis, functions can't be declared like:
|
|
// int f1(a,b), f2(c,d);
|
|
// so if there is a comma assume this is a variable declaration
|
|
else if (Token::Match(varName, "%name% (") && Token::simpleMatch(varName->linkAt(1), ") ,")) {
|
|
tok2 = varName->linkAt(1)->next();
|
|
}
|
|
|
|
else
|
|
tok2 = nullptr;
|
|
} else {
|
|
tok2 = nullptr;
|
|
}
|
|
|
|
if (!tok2) {
|
|
if (only_k_r_fpar)
|
|
finishedwithkr = false;
|
|
continue;
|
|
}
|
|
|
|
if (tok2->str() == ",") {
|
|
tok2->str(";");
|
|
//TODO: should we have to add also template '<>' links?
|
|
list.insertTokens(tok2, type0, typelen);
|
|
}
|
|
|
|
else {
|
|
Token *eq = tok2;
|
|
|
|
while (tok2) {
|
|
if (Token::Match(tok2, "{|("))
|
|
tok2 = tok2->link();
|
|
|
|
else if (!isC() && tok2->str() == "<" && tok2->previous()->isName() && !tok2->previous()->varId())
|
|
tok2 = tok2->findClosingBracket();
|
|
|
|
else if (std::strchr(";,", tok2->str()[0])) {
|
|
// "type var =" => "type var; var ="
|
|
const Token *varTok = type0->tokAt((int)typelen);
|
|
while (Token::Match(varTok, "*|&|const"))
|
|
varTok = varTok->next();
|
|
if (!varTok)
|
|
syntaxError(tok2); // invalid code
|
|
list.insertTokens(eq, varTok, 2);
|
|
eq->str(";");
|
|
|
|
// "= x, " => "= x; type "
|
|
if (tok2->str() == ",") {
|
|
tok2->str(";");
|
|
list.insertTokens(tok2, type0, typelen);
|
|
}
|
|
break;
|
|
}
|
|
if (tok2)
|
|
tok2 = tok2->next();
|
|
}
|
|
}
|
|
finishedwithkr = (only_k_r_fpar && tok2 && tok2->strAt(1) == "{");
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyPlatformTypes()
|
|
{
|
|
enum { isLongLong, isLong, isInt } type;
|
|
|
|
/** @todo This assumes a flat address space. Not true for segmented address space (FAR *). */
|
|
if (_settings->sizeof_size_t == 8) {
|
|
if (_settings->sizeof_long == 8)
|
|
type = isLong;
|
|
else
|
|
type = isLongLong;
|
|
} else if (_settings->sizeof_size_t == 4) {
|
|
if (_settings->sizeof_long == 4)
|
|
type = isLong;
|
|
else
|
|
type = isInt;
|
|
} else
|
|
return;
|
|
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
// pre-check to reduce unneeded match calls
|
|
if (!Token::Match(tok, "std| ::| %type%"))
|
|
continue;
|
|
bool isUnsigned;
|
|
if (Token::Match(tok, "std| ::| size_t|uintptr_t|uintmax_t"))
|
|
isUnsigned = true;
|
|
else if (Token::Match(tok, "std| ::| ssize_t|ptrdiff_t|intptr_t|intmax_t"))
|
|
isUnsigned = false;
|
|
else
|
|
continue;
|
|
|
|
bool inStd = false;
|
|
if (tok->str() == "::") {
|
|
tok->deleteThis();
|
|
} else if (tok->str() == "std") {
|
|
if (tok->next()->str() != "::")
|
|
continue;
|
|
inStd = true;
|
|
tok->deleteNext();
|
|
tok->deleteThis();
|
|
}
|
|
|
|
if (inStd)
|
|
tok->originalName("std::" + tok->str());
|
|
else
|
|
tok->originalName(tok->str());
|
|
if (isUnsigned)
|
|
tok->isUnsigned(true);
|
|
|
|
switch (type) {
|
|
case isLongLong:
|
|
tok->isLong(true);
|
|
tok->str("long");
|
|
break;
|
|
case isLong:
|
|
tok->str("long");
|
|
break;
|
|
case isInt:
|
|
tok->str("int");
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (_settings->isWindowsPlatform()) {
|
|
std::string platform_type = _settings->platformType == Settings::Win32A ? "win32A" :
|
|
_settings->platformType == Settings::Win32W ? "win32W" : "win64";
|
|
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->tokType() != Token::eType && tok->tokType() != Token::eName)
|
|
continue;
|
|
|
|
const Library::PlatformType * const platformtype = _settings->library.platform_type(tok->str(), platform_type);
|
|
|
|
if (platformtype) {
|
|
// check for namespace
|
|
if (tok->strAt(-1) == "::") {
|
|
const Token * tok1 = tok->tokAt(-2);
|
|
// skip when non-global namespace defined
|
|
if (tok1 && tok1->tokType() == Token::eName)
|
|
continue;
|
|
tok = tok->tokAt(-1);
|
|
tok->deleteThis();
|
|
}
|
|
Token *typeToken;
|
|
if (platformtype->_const_ptr) {
|
|
tok->str("const");
|
|
tok->insertToken("*");
|
|
tok->insertToken(platformtype->_type);
|
|
typeToken = tok;
|
|
} else if (platformtype->_pointer) {
|
|
tok->str(platformtype->_type);
|
|
typeToken = tok;
|
|
tok->insertToken("*");
|
|
} else if (platformtype->_ptr_ptr) {
|
|
tok->str(platformtype->_type);
|
|
typeToken = tok;
|
|
tok->insertToken("*");
|
|
tok->insertToken("*");
|
|
} else {
|
|
tok->originalName(tok->str());
|
|
tok->str(platformtype->_type);
|
|
typeToken = tok;
|
|
}
|
|
if (platformtype->_signed)
|
|
typeToken->isSigned(true);
|
|
if (platformtype->_unsigned)
|
|
typeToken->isUnsigned(true);
|
|
if (platformtype->_long)
|
|
typeToken->isLong(true);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyStdType()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "char|short|int|long|unsigned|signed|double|float") || (_settings->standards.c >= Standards::C99 && Token::Match(tok, "complex|_Complex"))) {
|
|
bool isFloat= false;
|
|
bool isSigned = false;
|
|
bool isUnsigned = false;
|
|
bool isComplex = false;
|
|
unsigned int countLong = 0;
|
|
Token* typeSpec = nullptr;
|
|
|
|
Token* tok2 = tok;
|
|
for (; tok2->next(); tok2 = tok2->next()) {
|
|
if (tok2->str() == "long") {
|
|
countLong++;
|
|
if (!isFloat)
|
|
typeSpec = tok2;
|
|
} else if (tok2->str() == "short") {
|
|
typeSpec = tok2;
|
|
} else if (tok2->str() == "unsigned")
|
|
isUnsigned = true;
|
|
else if (tok2->str() == "signed")
|
|
isSigned = true;
|
|
else if (Token::Match(tok2, "float|double")) {
|
|
isFloat = true;
|
|
typeSpec = tok2;
|
|
} else if (_settings->standards.c >= Standards::C99 && Token::Match(tok2, "complex|_Complex"))
|
|
isComplex = !isFloat || tok2->str() == "_Complex" || Token::Match(tok2->next(), "*|&|%name%"); // Ensure that "complex" is not the variables name
|
|
else if (Token::Match(tok2, "char|int")) {
|
|
if (!typeSpec)
|
|
typeSpec = tok2;
|
|
} else
|
|
break;
|
|
}
|
|
|
|
if (!typeSpec) { // unsigned i; or similar declaration
|
|
if (!isComplex) { // Ensure that "complex" is not the variables name
|
|
tok->str("int");
|
|
tok->isSigned(isSigned);
|
|
tok->isUnsigned(isUnsigned);
|
|
}
|
|
} else {
|
|
typeSpec->isLong(typeSpec->isLong() || (isFloat && countLong == 1) || countLong > 1);
|
|
typeSpec->isComplex(typeSpec->isComplex() || (isFloat && isComplex));
|
|
typeSpec->isSigned(typeSpec->isSigned() || isSigned);
|
|
typeSpec->isUnsigned(typeSpec->isUnsigned() || isUnsigned);
|
|
|
|
// Remove specifiers
|
|
const Token* tok3 = tok->previous();
|
|
tok2 = tok2->previous();
|
|
while (tok3 != tok2) {
|
|
if (tok2 != typeSpec &&
|
|
(isComplex || !Token::Match(tok2, "complex|_Complex"))) // Ensure that "complex" is not the variables name
|
|
tok2->deleteThis();
|
|
tok2 = tok2->previous();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyStaticConst()
|
|
{
|
|
// This function will simplify the token list so that the qualifiers "extern", "static"
|
|
// and "const" appear in the reverse order to what is in the array below.
|
|
const std::string qualifiers[] = {"const", "static", "extern"};
|
|
|
|
// Move 'const' before all other qualifiers and types and then
|
|
// move 'static' before all other qualifiers and types, ...
|
|
for (size_t i = 0; i < sizeof(qualifiers)/sizeof(qualifiers[0]); i++) {
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
|
|
// Keep searching for a qualifier
|
|
if (!tok->next() || tok->next()->str() != qualifiers[i])
|
|
continue;
|
|
|
|
// Look backwards to find the beginning of the declaration
|
|
Token* leftTok = tok;
|
|
for (; leftTok; leftTok = leftTok->previous()) {
|
|
if (!Token::Match(leftTok, "%type%|static|const|extern|struct|::") ||
|
|
(isCPP() && Token::Match(leftTok, "private:|protected:|public:|operator")))
|
|
break;
|
|
}
|
|
|
|
// The token preceding the declaration should indicate the start of a declaration
|
|
if (leftTok == tok ||
|
|
(leftTok && !Token::Match(leftTok, ";|{|}|(|,|private:|protected:|public:"))) {
|
|
continue;
|
|
}
|
|
|
|
// Move the qualifier to the left-most position in the declaration
|
|
tok->deleteNext();
|
|
if (!leftTok) {
|
|
list.front()->insertToken(qualifiers[i], emptyString, false);
|
|
list.front()->swapWithNext();
|
|
} else if (leftTok->next())
|
|
leftTok->next()->insertToken(qualifiers[i], emptyString, true);
|
|
else
|
|
leftTok->insertToken(qualifiers[i]);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyIfAndWhileAssign()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (!Token::Match(tok->next(), "if|while ("))
|
|
continue;
|
|
|
|
const Token* tokAt3 = tok->tokAt(3);
|
|
if (!Token::Match(tokAt3, "!| (| %name% =") &&
|
|
!Token::Match(tokAt3, "!| (| %name% . %name% =") &&
|
|
!Token::Match(tokAt3, "0 == (| %name% =") &&
|
|
!Token::Match(tokAt3, "0 == (| %name% . %name% ="))
|
|
continue;
|
|
|
|
// simplifying a "while(cond) { }" condition ?
|
|
const bool iswhile(tok->next()->str() == "while");
|
|
|
|
// simplifying a "do { } while(cond);" condition ?
|
|
const bool isDoWhile = iswhile && Token::simpleMatch(tok, "}") && Token::simpleMatch(tok->link()->previous(), "do");
|
|
Token* openBraceTok = tok->link();
|
|
|
|
// delete the "if|while"
|
|
tok->deleteNext();
|
|
|
|
// Remember if there is a "!" or not. And delete it if there are.
|
|
const bool isNot(Token::Match(tok->tokAt(2), "!|0"));
|
|
if (isNot)
|
|
tok->next()->deleteNext((tok->strAt(2) == "0") ? 2 : 1);
|
|
|
|
// Delete parentheses.. and remember how many there are with
|
|
// their links.
|
|
std::stack<Token *> braces;
|
|
while (tok->next()->str() == "(") {
|
|
braces.push(tok->next()->link());
|
|
tok->deleteNext();
|
|
}
|
|
|
|
// Skip the "%name% = ..."
|
|
Token *tok2;
|
|
for (tok2 = tok->next(); tok2; tok2 = tok2->next()) {
|
|
if (tok2->str() == "(")
|
|
tok2 = tok2->link();
|
|
else if (tok2->str() == ")")
|
|
break;
|
|
}
|
|
|
|
// Insert "; if|while ( .."
|
|
tok2 = tok2->previous();
|
|
if (tok->strAt(2) == ".") {
|
|
tok2->insertToken(tok->strAt(3));
|
|
tok2->next()->varId(tok->tokAt(3)->varId());
|
|
tok2->insertToken(".");
|
|
}
|
|
tok2->insertToken(tok->next()->str());
|
|
tok2->next()->varId(tok->next()->varId());
|
|
|
|
while (! braces.empty()) {
|
|
tok2->insertToken("(");
|
|
Token::createMutualLinks(tok2->next(), braces.top());
|
|
braces.pop();
|
|
}
|
|
|
|
if (isNot)
|
|
tok2->next()->insertToken("!");
|
|
tok2->insertToken(iswhile ? "while" : "if");
|
|
if (isDoWhile) {
|
|
tok2->insertToken("}");
|
|
Token::createMutualLinks(openBraceTok, tok2->next());
|
|
}
|
|
|
|
tok2->insertToken(";");
|
|
|
|
// delete the extra "}"
|
|
if (isDoWhile)
|
|
tok->deleteThis();
|
|
|
|
// If it's a while loop, insert the assignment in the loop
|
|
if (iswhile && !isDoWhile) {
|
|
unsigned int indentlevel = 0;
|
|
Token *tok3 = tok2;
|
|
|
|
for (; tok3; tok3 = tok3->next()) {
|
|
if (tok3->str() == "{")
|
|
++indentlevel;
|
|
else if (tok3->str() == "}") {
|
|
if (indentlevel <= 1)
|
|
break;
|
|
--indentlevel;
|
|
}
|
|
}
|
|
|
|
if (tok3 && indentlevel == 1) {
|
|
tok3 = tok3->previous();
|
|
std::stack<Token *> braces2;
|
|
|
|
for (tok2 = tok2->next(); tok2 && tok2 != tok; tok2 = tok2->previous()) {
|
|
tok3->insertToken(tok2->str());
|
|
Token *newTok = tok3->next();
|
|
|
|
newTok->varId(tok2->varId());
|
|
newTok->fileIndex(tok2->fileIndex());
|
|
newTok->linenr(tok2->linenr());
|
|
|
|
// link() new tokens manually
|
|
if (tok2->link()) {
|
|
if (Token::Match(newTok, "}|)|]|>")) {
|
|
braces2.push(newTok);
|
|
} else {
|
|
Token::createMutualLinks(newTok, braces2.top());
|
|
braces2.pop();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyVariableMultipleAssign()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "%name% = %name% = %num%|%name% ;")) {
|
|
// skip intermediate assignments
|
|
Token *tok2 = tok->previous();
|
|
while (tok2 &&
|
|
tok2->str() == "=" &&
|
|
Token::Match(tok2->previous(), "%name%")) {
|
|
tok2 = tok2->tokAt(-2);
|
|
}
|
|
|
|
if (!tok2 || tok2->str() != ";") {
|
|
continue;
|
|
}
|
|
|
|
Token *stopAt = tok->tokAt(2);
|
|
const Token *valueTok = stopAt->tokAt(2);
|
|
const std::string& value(valueTok->str());
|
|
tok2 = tok2->next();
|
|
|
|
while (tok2 != stopAt) {
|
|
tok2->next()->insertToken(";");
|
|
tok2->next()->insertToken(value);
|
|
tok2 = tok2->tokAt(4);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Binary operators simplification map
|
|
namespace {
|
|
const std::map<std::string, std::string> cAlternativeTokens = make_container< std::map<std::string, std::string> >()
|
|
<< std::make_pair("and", "&&")
|
|
<< std::make_pair("and_eq", "&=")
|
|
<< std::make_pair("bitand", "&")
|
|
<< std::make_pair("bitor", "|")
|
|
<< std::make_pair("not_eq", "!=")
|
|
<< std::make_pair("or", "||")
|
|
<< std::make_pair("or_eq", "|=")
|
|
<< std::make_pair("xor", "^")
|
|
<< std::make_pair("xor_eq", "^=") ;
|
|
}
|
|
|
|
// Simplify the C alternative tokens:
|
|
// and => &&
|
|
// and_eq => &=
|
|
// bitand => &
|
|
// bitor => |
|
|
// compl => ~
|
|
// not => !
|
|
// not_eq => !=
|
|
// or => ||
|
|
// or_eq => |=
|
|
// xor => ^
|
|
// xor_eq => ^=
|
|
bool Tokenizer::simplifyCAlternativeTokens()
|
|
{
|
|
/* For C code: executable scope level */
|
|
unsigned int executableScopeLevel = 0;
|
|
|
|
bool ret = false;
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->str() == "{") {
|
|
if (executableScopeLevel > 0 || Token::simpleMatch(tok->previous(), ") {"))
|
|
++executableScopeLevel;
|
|
continue;
|
|
}
|
|
|
|
if (tok->str() == "}") {
|
|
if (executableScopeLevel > 0)
|
|
--executableScopeLevel;
|
|
continue;
|
|
}
|
|
|
|
if (!tok->isName())
|
|
continue;
|
|
|
|
const std::map<std::string, std::string>::const_iterator cOpIt = cAlternativeTokens.find(tok->str());
|
|
if (cOpIt != cAlternativeTokens.end()) {
|
|
if (isC() && !Token::Match(tok->previous(), "%name%|%num%|%char%|)|]|> %name% %name%|%num%|%char%|%op%|("))
|
|
continue;
|
|
tok->str(cOpIt->second);
|
|
ret = true;
|
|
} else if (Token::Match(tok, "not|compl")) {
|
|
// Don't simplify 'not p;' (in case 'not' is a type)
|
|
if (isC() && (!Token::Match(tok->next(), "%name%|%op%|(") ||
|
|
Token::Match(tok->previous(), "[;{}]") ||
|
|
(executableScopeLevel == 0U && tok->strAt(-1) == "(")))
|
|
continue;
|
|
|
|
tok->str((tok->str() == "not") ? "!" : "~");
|
|
ret = true;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
// int i(0); => int i; i = 0;
|
|
// int i(0), j; => int i; i = 0; int j;
|
|
void Tokenizer::simplifyInitVar()
|
|
{
|
|
if (isC())
|
|
return;
|
|
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (!tok->isName() || (tok->previous() && !Token::Match(tok->previous(), "[;{}]")))
|
|
continue;
|
|
|
|
if (tok->str() == "return")
|
|
continue;
|
|
|
|
if (Token::Match(tok, "class|struct|union| %type% *| %name% ( &| %any% ) ;")) {
|
|
tok = initVar(tok);
|
|
} else if (Token::Match(tok, "%type% *| %name% ( %type% (")) {
|
|
const Token* tok2 = tok->tokAt(2);
|
|
if (!tok2->link())
|
|
tok2 = tok2->next();
|
|
if (!tok2->link() || (tok2->link()->strAt(1) == ";" && !Token::simpleMatch(tok2->linkAt(2), ") (")))
|
|
tok = initVar(tok);
|
|
} else if (Token::Match(tok, "class|struct|union| %type% *| %name% ( &| %any% ) ,")) {
|
|
Token *tok1 = tok->tokAt(5);
|
|
while (tok1->str() != ",")
|
|
tok1 = tok1->next();
|
|
tok1->str(";");
|
|
|
|
const unsigned int numTokens = (Token::Match(tok, "class|struct|union")) ? 2U : 1U;
|
|
list.insertTokens(tok1, tok, numTokens);
|
|
tok = initVar(tok);
|
|
}
|
|
}
|
|
}
|
|
|
|
Token * Tokenizer::initVar(Token * tok)
|
|
{
|
|
// call constructor of class => no simplification
|
|
if (Token::Match(tok, "class|struct|union")) {
|
|
if (tok->strAt(2) != "*")
|
|
return tok;
|
|
|
|
tok = tok->next();
|
|
} else if (!tok->isStandardType() && tok->next()->str() != "*")
|
|
return tok;
|
|
|
|
// goto variable name..
|
|
tok = tok->next();
|
|
if (tok->str() == "*")
|
|
tok = tok->next();
|
|
|
|
// sizeof is not a variable name..
|
|
if (tok->str() == "sizeof")
|
|
return tok;
|
|
|
|
// check initializer..
|
|
if (tok->tokAt(2)->isStandardType() || tok->strAt(2) == "void")
|
|
return tok;
|
|
else if (!tok->tokAt(2)->isNumber() && !Token::Match(tok->tokAt(2), "%type% (") && tok->strAt(2) != "&" && tok->tokAt(2)->varId() == 0)
|
|
return tok;
|
|
|
|
// insert '; var ='
|
|
tok->insertToken(";");
|
|
tok->next()->insertToken(tok->str());
|
|
tok->tokAt(2)->varId(tok->varId());
|
|
tok = tok->tokAt(2);
|
|
tok->insertToken("=");
|
|
|
|
// goto '('..
|
|
tok = tok->tokAt(2);
|
|
|
|
// delete ')'
|
|
tok->link()->deleteThis();
|
|
|
|
// delete this
|
|
tok->deleteThis();
|
|
|
|
return tok;
|
|
}
|
|
|
|
|
|
bool Tokenizer::simplifyKnownVariables()
|
|
{
|
|
// return value for function. Set to true if any simplifications are made
|
|
bool ret = false;
|
|
|
|
// constants..
|
|
{
|
|
std::map<unsigned int, std::string> constantValues;
|
|
bool goback = false;
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (goback) {
|
|
tok = tok->previous();
|
|
goback = false;
|
|
}
|
|
// Reference to variable
|
|
if (Token::Match(tok, "%type%|* & %name% = %name% ;")) {
|
|
Token *start = tok->previous();
|
|
while (Token::Match(start,"%type%|*|&"))
|
|
start = start->previous();
|
|
if (!Token::Match(start,"[;{}]"))
|
|
continue;
|
|
const Token *reftok = tok->tokAt(2);
|
|
const Token *vartok = reftok->tokAt(2);
|
|
int level = 0;
|
|
for (Token *tok2 = tok->tokAt(6); tok2; tok2 = tok2->next()) {
|
|
if (tok2->str() == "{") {
|
|
++level;
|
|
} else if (tok2->str() == "}") {
|
|
if (level <= 0)
|
|
break;
|
|
--level;
|
|
} else if (tok2->varId() == reftok->varId()) {
|
|
tok2->str(vartok->str());
|
|
tok2->varId(vartok->varId());
|
|
}
|
|
}
|
|
Token::eraseTokens(start, tok->tokAt(6));
|
|
tok = start;
|
|
}
|
|
|
|
if (tok->isName() && (Token::Match(tok, "static| const| static| %type% const| %name% = %any% ;") ||
|
|
Token::Match(tok, "static| const| static| %type% const| %name% ( %any% ) ;"))) {
|
|
bool isconst = false;
|
|
for (const Token *tok2 = tok; (tok2->str() != "=") && (tok2->str() != "("); tok2 = tok2->next()) {
|
|
if (tok2->str() == "const") {
|
|
isconst = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!isconst)
|
|
continue;
|
|
|
|
Token *tok1 = tok;
|
|
|
|
// start of statement
|
|
if (tok != list.front() && !Token::Match(tok->previous(),";|{|}|private:|protected:|public:"))
|
|
continue;
|
|
// skip "const" and "static"
|
|
while (Token::Match(tok, "const|static"))
|
|
tok = tok->next();
|
|
// pod type
|
|
if (!tok->isStandardType())
|
|
continue;
|
|
|
|
const Token * const vartok = (tok->next() && tok->next()->str() == "const") ? tok->tokAt(2) : tok->next();
|
|
const Token * const valuetok = vartok->tokAt(2);
|
|
if (Token::Match(valuetok, "%bool%|%char%|%num%|%str% )| ;")) {
|
|
//check if there's not a reference usage inside the code
|
|
bool withreference = false;
|
|
for (const Token *tok2 = valuetok->tokAt(2); tok2; tok2 = tok2->next()) {
|
|
if (Token::Match(tok2,"(|[|,|{|return|%op% & %varid%", vartok->varId())) {
|
|
withreference = true;
|
|
break;
|
|
}
|
|
}
|
|
//don't simplify 'f(&x)' to 'f(&100)'
|
|
if (withreference)
|
|
continue;
|
|
|
|
constantValues[vartok->varId()] = valuetok->str();
|
|
|
|
// remove statement
|
|
while (tok1->next()->str() != ";")
|
|
tok1->deleteNext();
|
|
tok1->deleteNext();
|
|
tok1->deleteThis();
|
|
tok = tok1;
|
|
goback = true;
|
|
ret = true;
|
|
}
|
|
}
|
|
|
|
else if (tok->varId() && constantValues.find(tok->varId()) != constantValues.end()) {
|
|
tok->str(constantValues[tok->varId()]);
|
|
}
|
|
}
|
|
}
|
|
|
|
// variable id for float/double variables
|
|
std::set<unsigned int> floatvars;
|
|
std::set<unsigned int> arrays;
|
|
|
|
// auto variables..
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
// Search for a block of code
|
|
Token *start = const_cast<Token *>(startOfExecutableScope(tok));
|
|
if (!start)
|
|
continue;
|
|
|
|
tok = start;
|
|
// parse the block of code..
|
|
int indentlevel = 0;
|
|
Token *tok2 = tok;
|
|
for (; tok2; tok2 = tok2->next()) {
|
|
if (Token::Match(tok2, "[;{}] float|double %name% ;")) {
|
|
floatvars.insert(tok2->tokAt(2)->varId());
|
|
}
|
|
|
|
if (Token::Match(tok2, "[;{}] %type% *| %name% [")) {
|
|
const Token *nameToken = tok2->tokAt(2);
|
|
if (nameToken->str() == "*")
|
|
nameToken = nameToken->next();
|
|
arrays.insert(nameToken->varId());
|
|
}
|
|
|
|
if (tok2->str() == "{")
|
|
++indentlevel;
|
|
|
|
else if (tok2->str() == "}") {
|
|
--indentlevel;
|
|
if (indentlevel <= 0)
|
|
break;
|
|
}
|
|
|
|
else if (Token::simpleMatch(tok2, "for ("))
|
|
tok2 = tok2->next()->link();
|
|
|
|
else if (tok2->previous()->str() != "*" && !Token::Match(tok2->tokAt(-2), "* --|++") &&
|
|
(Token::Match(tok2, "%name% = %bool%|%char%|%num%|%str%|%name% ;") ||
|
|
Token::Match(tok2, "%name% [ %num%| ] = %str% ;") ||
|
|
Token::Match(tok2, "%name% = & %name% ;") ||
|
|
Token::Match(tok2, "%name% = & %name% [ 0 ] ;"))) {
|
|
const unsigned int varid = tok2->varId();
|
|
if (varid == 0)
|
|
continue;
|
|
|
|
// initialization of static variable => the value is not *known*
|
|
{
|
|
bool isstatic = false;
|
|
const Token *decl = tok2->previous();
|
|
while (decl && (decl->isName() || decl->str() == "*")) {
|
|
if (decl->str() == "static") {
|
|
isstatic = true;
|
|
break;
|
|
}
|
|
decl = decl->previous();
|
|
}
|
|
if (isstatic)
|
|
continue;
|
|
}
|
|
|
|
// skip loop variable
|
|
if (Token::Match(tok2->tokAt(-2), "(|:: %type%")) {
|
|
const Token *tok3 = tok2->previous();
|
|
do {
|
|
tok3 = tok3->tokAt(-2);
|
|
} while (Token::Match(tok3->previous(), ":: %type%"));
|
|
if (Token::Match(tok3->tokAt(-2), "for ( %type%"))
|
|
continue;
|
|
}
|
|
|
|
// struct name..
|
|
if (Token::Match(tok2, "%varid% = &| %varid%", tok2->varId()))
|
|
continue;
|
|
|
|
const std::string structname = Token::Match(tok2->tokAt(-3), "[;{}] %name% .") ?
|
|
std::string(tok2->strAt(-2) + " .") :
|
|
std::string("");
|
|
|
|
const Token * const valueToken = tok2->tokAt(2);
|
|
|
|
std::string value;
|
|
unsigned int valueVarId = 0;
|
|
|
|
Token *tok3 = nullptr;
|
|
bool valueIsPointer = false;
|
|
|
|
// there could be a hang here if tok2 is moved back by the function calls below for some reason
|
|
if (_settings->terminated())
|
|
return false;
|
|
|
|
if (!simplifyKnownVariablesGetData(varid, &tok2, &tok3, value, valueVarId, valueIsPointer, floatvars.find(tok2->varId()) != floatvars.end()))
|
|
continue;
|
|
|
|
if (valueVarId > 0 && arrays.find(valueVarId) != arrays.end())
|
|
continue;
|
|
|
|
ret |= simplifyKnownVariablesSimplify(&tok2, tok3, varid, structname, value, valueVarId, valueIsPointer, valueToken, indentlevel);
|
|
}
|
|
|
|
else if (Token::Match(tok2, "strcpy|sprintf ( %name% , %str% ) ;")) {
|
|
const unsigned int varid(tok2->tokAt(2)->varId());
|
|
if (varid == 0)
|
|
continue;
|
|
|
|
const Token * const valueToken = tok2->tokAt(4);
|
|
std::string value(valueToken->str());
|
|
if (tok2->str() == "sprintf") {
|
|
std::string::size_type n = 0;
|
|
while ((n = value.find("%%", n)) != std::string::npos) {
|
|
// Replace "%%" with "%" - erase the first '%' and continue past the second '%'
|
|
value.erase(n, 1);
|
|
++n;
|
|
}
|
|
}
|
|
const unsigned int valueVarId(0);
|
|
const bool valueIsPointer(false);
|
|
Token *tok3 = tok2->tokAt(6);
|
|
ret |= simplifyKnownVariablesSimplify(&tok2, tok3, varid, emptyString, value, valueVarId, valueIsPointer, valueToken, indentlevel);
|
|
|
|
// there could be a hang here if tok2 was moved back by the function call above for some reason
|
|
if (_settings->terminated())
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (tok2)
|
|
tok = tok2->previous();
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool Tokenizer::simplifyKnownVariablesGetData(unsigned int varid, Token **_tok2, Token **_tok3, std::string &value, unsigned int &valueVarId, bool &valueIsPointer, bool floatvar)
|
|
{
|
|
Token *tok2 = *_tok2;
|
|
Token *tok3 = nullptr;
|
|
|
|
if (Token::simpleMatch(tok2->tokAt(-2), "for (")) {
|
|
// only specific for loops is handled
|
|
if (!Token::Match(tok2, "%varid% = %num% ; %varid% <|<= %num% ; ++| %varid% ++| ) {", varid))
|
|
return false;
|
|
|
|
// is there a "break" in the for loop?
|
|
bool hasbreak = false;
|
|
const Token* end4 = tok2->linkAt(-1)->linkAt(1);
|
|
for (const Token *tok4 = tok2->previous()->link(); tok4 != end4; tok4 = tok4->next()) {
|
|
if (tok4->str() == "break") {
|
|
hasbreak = true;
|
|
break;
|
|
}
|
|
}
|
|
if (hasbreak)
|
|
return false;
|
|
|
|
// no break => the value of the counter value is known after the for loop..
|
|
const Token* compareTok = tok2->tokAt(5);
|
|
if (compareTok->str() == "<") {
|
|
value = compareTok->next()->str();
|
|
valueVarId = compareTok->next()->varId();
|
|
} else
|
|
value = MathLib::toString(MathLib::toLongNumber(compareTok->next()->str()) + 1);
|
|
|
|
// Skip for-body..
|
|
tok3 = tok2->previous()->link()->next()->link()->next();
|
|
} else {
|
|
value = tok2->strAt(2);
|
|
valueVarId = tok2->tokAt(2)->varId();
|
|
if (tok2->strAt(1) == "[") {
|
|
value = tok2->next()->link()->strAt(2);
|
|
valueVarId = 0;
|
|
} else if (value == "&") {
|
|
value = tok2->strAt(3);
|
|
valueVarId = tok2->tokAt(3)->varId();
|
|
|
|
// *ptr = &var; *ptr = 5;
|
|
// equals
|
|
// var = 5; not *var = 5;
|
|
if (tok2->strAt(4) == ";")
|
|
valueIsPointer = true;
|
|
}
|
|
|
|
// Add a '.0' to a decimal value and therefore convert it to an floating point number.
|
|
else if (MathLib::isDec(tok2->strAt(2)) && floatvar) {
|
|
value += ".0";
|
|
}
|
|
|
|
// float variable: convert true/false to 1.0 / 0.0
|
|
else if (tok2->tokAt(2)->isBoolean() && floatvar) {
|
|
value = (value == "true") ? "1.0" : "0.0";
|
|
}
|
|
|
|
if (Token::simpleMatch(tok2->next(), "= &"))
|
|
tok2 = tok2->tokAt(3);
|
|
|
|
tok3 = tok2->next();
|
|
}
|
|
*_tok2 = tok2;
|
|
*_tok3 = tok3;
|
|
return true;
|
|
}
|
|
|
|
bool Tokenizer::simplifyKnownVariablesSimplify(Token **tok2, Token *tok3, unsigned int varid, const std::string &structname, std::string &value, unsigned int valueVarId, bool valueIsPointer, const Token * const valueToken, int indentlevel) const
|
|
{
|
|
const bool pointeralias(valueToken->isName() || Token::Match(valueToken, "& %name% ["));
|
|
const bool printDebug = _settings->debugwarnings;
|
|
|
|
if (_errorLogger && !list.getFiles().empty())
|
|
_errorLogger->reportProgress(list.getFiles()[0], "Tokenize (simplifyKnownVariables)", tok3->progressValue());
|
|
|
|
if (isMaxTime())
|
|
return false;
|
|
|
|
bool ret = false;
|
|
|
|
Token* bailOutFromLoop = nullptr;
|
|
int indentlevel3 = indentlevel;
|
|
bool ret3 = false;
|
|
for (; tok3; tok3 = tok3->next()) {
|
|
if (tok3->str() == "{") {
|
|
++indentlevel3;
|
|
} else if (tok3->str() == "}") {
|
|
--indentlevel3;
|
|
if (indentlevel3 < indentlevel) {
|
|
if (Token::Match((*tok2)->tokAt(-7), "%type% * %name% ; %name% = & %name% ;") &&
|
|
(*tok2)->strAt(-5) == (*tok2)->strAt(-3)) {
|
|
(*tok2) = (*tok2)->tokAt(-4);
|
|
Token::eraseTokens((*tok2), (*tok2)->tokAt(6));
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Stop if there is a pointer alias and a shadow variable is
|
|
// declared in an inner scope (#3058)
|
|
if (valueIsPointer && tok3->varId() > 0 &&
|
|
tok3->previous() && (tok3->previous()->isName() || tok3->previous()->str() == "*") &&
|
|
valueToken->str() == "&" &&
|
|
valueToken->next() &&
|
|
valueToken->next()->isName() &&
|
|
tok3->str() == valueToken->next()->str() &&
|
|
tok3->varId() > valueToken->next()->varId()) {
|
|
// more checking if this is a variable declaration
|
|
bool decl = true;
|
|
for (const Token *tok4 = tok3->previous(); tok4; tok4 = tok4->previous()) {
|
|
if (Token::Match(tok4, "[;{}]"))
|
|
break;
|
|
|
|
else if (tok4->isName()) {
|
|
if (tok4->varId() > 0) {
|
|
decl = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
else if (!Token::Match(tok4, "[&*]")) {
|
|
decl = false;
|
|
break;
|
|
}
|
|
}
|
|
if (decl)
|
|
break;
|
|
}
|
|
|
|
// Stop if label is found
|
|
if (Token::Match(tok3, "; %type% : ;"))
|
|
break;
|
|
|
|
// Stop if break/continue is found ..
|
|
if (Token::Match(tok3, "break|continue"))
|
|
break;
|
|
if ((indentlevel3 > 1 || !Token::simpleMatch(Token::findsimplematch(tok3,";"), "; }")) && tok3->str() == "return")
|
|
ret3 = true;
|
|
if (ret3 && tok3->str() == ";")
|
|
break;
|
|
|
|
if (pointeralias && Token::Match(tok3, ("!!= " + value).c_str()))
|
|
break;
|
|
|
|
// Stop if do is found
|
|
if (tok3->str() == "do")
|
|
break;
|
|
|
|
// Stop if unknown function call is seen
|
|
// If the variable is a global or a member variable it might be
|
|
// changed by the function call
|
|
// TODO: don't bail out if the variable is a local variable,
|
|
// then it can't be changed by the function call.
|
|
if (tok3->str() == ")" && tok3->link() &&
|
|
Token::Match(tok3->link()->tokAt(-2), "[;{}] %name% (") &&
|
|
!Token::Match(tok3->link()->previous(), "if|for|while|switch|BOOST_FOREACH"))
|
|
break;
|
|
|
|
// Stop if something like 'while (--var)' is found
|
|
if (Token::Match(tok3, "for|while|do")) {
|
|
const Token *endpar = tok3->next()->link();
|
|
if (Token::simpleMatch(endpar, ") {"))
|
|
endpar = endpar->next()->link();
|
|
bool bailout = false;
|
|
for (const Token *tok4 = tok3; tok4 && tok4 != endpar; tok4 = tok4->next()) {
|
|
if (Token::Match(tok4, "++|-- %varid%", varid) ||
|
|
Token::Match(tok4, "%varid% ++|--|=", varid)) {
|
|
bailout = true;
|
|
break;
|
|
}
|
|
}
|
|
if (bailout)
|
|
break;
|
|
}
|
|
|
|
if (bailOutFromLoop) {
|
|
// This could be a loop, skip it, but only if it doesn't contain
|
|
// the variable we are checking for. If it contains the variable
|
|
// we will bail out.
|
|
if (tok3->varId() == varid) {
|
|
// Continue
|
|
//tok2 = bailOutFromLoop;
|
|
break;
|
|
} else if (tok3 == bailOutFromLoop) {
|
|
// We have skipped the loop
|
|
bailOutFromLoop = nullptr;
|
|
continue;
|
|
}
|
|
|
|
continue;
|
|
} else if (tok3->str() == "{" && tok3->previous()->str() == ")") {
|
|
// There is a possible loop after the assignment. Try to skip it.
|
|
if (tok3->previous()->link() &&
|
|
tok3->previous()->link()->strAt(-1) != "if")
|
|
bailOutFromLoop = tok3->link();
|
|
continue;
|
|
}
|
|
|
|
// Variable used in realloc (see Ticket #1649)
|
|
if (Token::Match(tok3, "%name% = realloc ( %name% ,") &&
|
|
tok3->varId() == varid &&
|
|
tok3->tokAt(4)->varId() == varid) {
|
|
tok3->tokAt(4)->str(value);
|
|
ret = true;
|
|
}
|
|
|
|
// condition "(|&&|%OROR% %varid% )|&&|%OROR%|;
|
|
if (!Token::Match(tok3->previous(), "( %name% )") &&
|
|
Token::Match(tok3->previous(), "&&|(|%oror% %varid% &&|%oror%|)|;", varid)) {
|
|
tok3->str(value);
|
|
tok3->varId(valueVarId);
|
|
ret = true;
|
|
}
|
|
|
|
// parameter in function call..
|
|
if (tok3->varId() == varid && Token::Match(tok3->previous(), "[(,] %name% [,)]")) {
|
|
// If the parameter is passed by value then simplify it
|
|
if (isFunctionParameterPassedByValue(tok3)) {
|
|
tok3->str(value);
|
|
tok3->varId(valueVarId);
|
|
ret = true;
|
|
}
|
|
}
|
|
|
|
// Variable is used somehow in a non-defined pattern => bail out
|
|
if (tok3->varId() == varid) {
|
|
// This is a really generic bailout so let's try to avoid this.
|
|
// There might be lots of false negatives.
|
|
if (printDebug) {
|
|
// FIXME: Fix all the debug warnings for values and then
|
|
// remove this bailout
|
|
if (pointeralias)
|
|
break;
|
|
|
|
// suppress debug-warning when calling member function
|
|
if (Token::Match(tok3->next(), ". %name% ("))
|
|
break;
|
|
|
|
// suppress debug-warning when assignment
|
|
if (tok3->strAt(1) == "=")
|
|
break;
|
|
|
|
// taking address of variable..
|
|
if (Token::Match(tok3->tokAt(-2), "return|= & %name% ;"))
|
|
break;
|
|
|
|
// parameter in function call..
|
|
if (Token::Match(tok3->tokAt(-2), "%name% ( %name% ,|)") ||
|
|
Token::Match(tok3->previous(), ", %name% ,|)"))
|
|
break;
|
|
|
|
// conditional increment
|
|
if (Token::Match(tok3->tokAt(-3), ") { ++|--") ||
|
|
Token::Match(tok3->tokAt(-2), ") { %name% ++|--"))
|
|
break;
|
|
|
|
reportError(tok3, Severity::debug, "debug",
|
|
"simplifyKnownVariables: bailing out (variable="+tok3->str()+", value="+value+")");
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
// Using the variable in condition..
|
|
if (Token::Match(tok3->previous(), ("if ( " + structname + " %varid% %cop%|)").c_str(), varid) ||
|
|
Token::Match(tok3, ("( " + structname + " %varid% %comp%").c_str(), varid) ||
|
|
Token::Match(tok3, ("%comp%|!|= " + structname + " %varid% %cop%|)|;").c_str(), varid) ||
|
|
Token::Match(tok3->previous(), "strlen|free ( %varid% )", varid)) {
|
|
if (value[0] == '\"' && tok3->previous()->str() != "strlen") {
|
|
// bail out if value is a string unless if it's just given
|
|
// as parameter to strlen
|
|
break;
|
|
}
|
|
if (!structname.empty()) {
|
|
tok3->deleteNext(2);
|
|
}
|
|
if (Token::Match(valueToken, "& %name% ;")) {
|
|
tok3->insertToken("&");
|
|
tok3 = tok3->next();
|
|
}
|
|
tok3 = tok3->next();
|
|
tok3->str(value);
|
|
tok3->varId(valueVarId);
|
|
ret = true;
|
|
}
|
|
|
|
// pointer alias used in condition..
|
|
if (Token::Match(valueToken,"& %name% ;") && Token::Match(tok3, ("( * " + structname + " %varid% %cop%").c_str(), varid)) {
|
|
tok3->deleteNext();
|
|
if (!structname.empty())
|
|
tok3->deleteNext(2);
|
|
tok3 = tok3->next();
|
|
tok3->str(value);
|
|
tok3->varId(valueVarId);
|
|
ret = true;
|
|
}
|
|
|
|
// Delete pointer alias
|
|
if (isCPP() && pointeralias && (tok3->str() == "delete") && tok3->next() &&
|
|
(Token::Match(tok3->next(), "%varid% ;", varid) ||
|
|
Token::Match(tok3->next(), "[ ] %varid%", varid))) {
|
|
tok3 = (tok3->next()->str() == "[") ? tok3->tokAt(3) : tok3->next();
|
|
tok3->str(value);
|
|
tok3->varId(valueVarId);
|
|
ret = true;
|
|
}
|
|
|
|
// Variable is used in function call..
|
|
if (Token::Match(tok3, ("%name% ( " + structname + " %varid% ,").c_str(), varid)) {
|
|
static const char * const functionName[] = {
|
|
// always simplify
|
|
"strcmp", "strdup",
|
|
// don't simplify buffer value
|
|
"memcmp","memcpy","memmove","memset","strcpy","strncmp","strncpy"
|
|
};
|
|
for (unsigned int i = 0; i < (sizeof(functionName) / sizeof(*functionName)); ++i) {
|
|
if (valueVarId == 0U && i >= 2)
|
|
break;
|
|
if (tok3->str() == functionName[i]) {
|
|
Token *par1 = tok3->tokAt(2);
|
|
if (!structname.empty()) {
|
|
par1->deleteNext();
|
|
par1->deleteThis();
|
|
}
|
|
par1->str(value);
|
|
par1->varId(valueVarId);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Variable is used as 2nd parameter in function call..
|
|
if (Token::Match(tok3, ("%name% ( %any% , " + structname + " %varid% ,|)").c_str(), varid)) {
|
|
static const char * const functionName[] = {
|
|
// always simplify
|
|
"strcmp","strcpy","strncmp","strncpy",
|
|
// don't simplify buffer value
|
|
"memcmp","memcpy","memmove"
|
|
};
|
|
for (unsigned int i = 0; i < (sizeof(functionName) / sizeof(*functionName)); ++i) {
|
|
if (valueVarId == 0U && i >= 4)
|
|
break;
|
|
if (tok3->str() == functionName[i]) {
|
|
Token *par = tok3->tokAt(4);
|
|
if (!structname.empty()) {
|
|
par->deleteNext();
|
|
par->deleteThis();
|
|
}
|
|
par->str(value);
|
|
par->varId(valueVarId);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// array usage
|
|
if (value[0] != '\"' && Token::Match(tok3, ("[(,] " + structname + " %varid% [|%cop%").c_str(), varid)) {
|
|
if (!structname.empty()) {
|
|
tok3->deleteNext(2);
|
|
}
|
|
tok3 = tok3->next();
|
|
tok3->str(value);
|
|
tok3->varId(valueVarId);
|
|
ret = true;
|
|
}
|
|
|
|
// The >> operator is sometimes used to assign a variable in C++
|
|
if (isCPP() && Token::Match(tok3, (">> " + structname + " %varid%").c_str(), varid)) {
|
|
// bailout for such code: ; std :: cin >> i ;
|
|
const Token *prev = tok3->previous();
|
|
while (prev && prev->str() != "return" && Token::Match(prev, "%name%|::|*"))
|
|
prev = prev->previous();
|
|
if (Token::Match(prev, ";|{|}|>>"))
|
|
break;
|
|
}
|
|
|
|
// Variable is used in calculation..
|
|
if (((tok3->previous()->varId() > 0) && Token::Match(tok3, ("& " + structname + " %varid%").c_str(), varid)) ||
|
|
(Token::Match(tok3, ("[=+-*/%^|[] " + structname + " %varid% [=?+-*/%^|;])]").c_str(), varid) && !Token::Match(tok3, ("= " + structname + " %name% =").c_str())) ||
|
|
Token::Match(tok3, ("[(=+-*/%^|[] " + structname + " %varid% <<|>>").c_str(), varid) ||
|
|
Token::Match(tok3, ("<<|>> " + structname + " %varid% %cop%|;|]|)").c_str(), varid) ||
|
|
Token::Match(tok3->previous(), ("[=+-*/%^|[] ( " + structname + " %varid% !!=").c_str(), varid)) {
|
|
if (value[0] == '\"')
|
|
break;
|
|
if (!structname.empty()) {
|
|
tok3->deleteNext(2);
|
|
ret = true;
|
|
}
|
|
tok3 = tok3->next();
|
|
if (tok3->str() != value)
|
|
ret = true;
|
|
tok3->str(value);
|
|
tok3->varId(valueVarId);
|
|
if (tok3->previous()->str() == "*" && (valueIsPointer || Token::Match(valueToken, "& %name% ;"))) {
|
|
tok3 = tok3->previous();
|
|
tok3->deleteThis();
|
|
ret = true;
|
|
} else if (Token::Match(valueToken, "& %name% ;"))
|
|
tok3->insertToken("&", emptyString, true);
|
|
}
|
|
|
|
if (Token::simpleMatch(tok3, "= {")) {
|
|
const Token* const end4 = tok3->linkAt(1);
|
|
for (const Token *tok4 = tok3; tok4 != end4; tok4 = tok4->next()) {
|
|
if (Token::Match(tok4, "{|, %varid% ,|}", varid)) {
|
|
tok4->next()->str(value);
|
|
tok4->next()->varId(valueVarId);
|
|
ret = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Using the variable in for-condition..
|
|
if (Token::simpleMatch(tok3, "for (")) {
|
|
for (Token *tok4 = tok3->tokAt(2); tok4; tok4 = tok4->next()) {
|
|
if (Token::Match(tok4, "(|)"))
|
|
break;
|
|
|
|
// Replace variable used in condition..
|
|
if (Token::Match(tok4, "; %name% <|<=|!= %name% ; ++| %name% ++| )")) {
|
|
const Token *inctok = tok4->tokAt(5);
|
|
if (inctok->str() == "++")
|
|
inctok = inctok->next();
|
|
if (inctok->varId() == varid)
|
|
break;
|
|
|
|
if (tok4->next()->varId() == varid) {
|
|
tok4->next()->str(value);
|
|
tok4->next()->varId(valueVarId);
|
|
ret = true;
|
|
}
|
|
if (tok4->tokAt(3)->varId() == varid) {
|
|
tok4->tokAt(3)->str(value);
|
|
tok4->tokAt(3)->varId(valueVarId);
|
|
ret = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (indentlevel == indentlevel3 && Token::Match(tok3->next(), "%varid% ++|--", varid) && MathLib::isInt(value)) {
|
|
const std::string op(tok3->strAt(2));
|
|
if (Token::Match(tok3, "[{};] %any% %any% ;")) {
|
|
tok3->deleteNext(3);
|
|
} else {
|
|
tok3 = tok3->next();
|
|
tok3->str(value);
|
|
tok3->varId(valueVarId);
|
|
tok3->deleteNext();
|
|
}
|
|
value = MathLib::incdec(value, op);
|
|
if (!Token::simpleMatch((*tok2)->tokAt(-2), "for (")) {
|
|
(*tok2)->tokAt(2)->str(value);
|
|
(*tok2)->tokAt(2)->varId(valueVarId);
|
|
}
|
|
ret = true;
|
|
}
|
|
|
|
if (indentlevel == indentlevel3 && Token::Match(tok3->next(), "++|-- %varid%", varid) && MathLib::isInt(value) &&
|
|
!Token::Match(tok3->tokAt(3), "[.[]")) {
|
|
value = MathLib::incdec(value, tok3->next()->str());
|
|
(*tok2)->tokAt(2)->str(value);
|
|
(*tok2)->tokAt(2)->varId(valueVarId);
|
|
if (Token::Match(tok3, "[;{}] %any% %any% ;")) {
|
|
tok3->deleteNext(3);
|
|
} else {
|
|
tok3->deleteNext();
|
|
tok3->next()->str(value);
|
|
tok3->next()->varId(valueVarId);
|
|
}
|
|
tok3 = tok3->next();
|
|
ret = true;
|
|
}
|
|
|
|
// return variable..
|
|
if (Token::Match(tok3, "return %varid% %any%", varid) &&
|
|
(tok3->tokAt(2)->isExtendedOp() || tok3->strAt(2) == ";") &&
|
|
value[0] != '\"') {
|
|
tok3->next()->str(value);
|
|
tok3->next()->varId(valueVarId);
|
|
}
|
|
|
|
else if (pointeralias && Token::Match(tok3, "return * %varid% ;", varid) && value[0] != '\"') {
|
|
tok3->deleteNext();
|
|
tok3->next()->str(value);
|
|
tok3->next()->varId(valueVarId);
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
void Tokenizer::elseif()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (!Token::simpleMatch(tok, "else if"))
|
|
continue;
|
|
|
|
for (Token *tok2 = tok; tok2; tok2 = tok2->next()) {
|
|
if (Token::Match(tok2, "(|{|["))
|
|
tok2 = tok2->link();
|
|
|
|
if (Token::Match(tok2, "}|;")) {
|
|
if (tok2->next() && tok2->next()->str() != "else") {
|
|
tok->insertToken("{");
|
|
tok2->insertToken("}");
|
|
Token::createMutualLinks(tok->next(), tok2->next());
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
bool Tokenizer::simplifyRedundantParentheses()
|
|
{
|
|
bool ret = false;
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->str() != "(")
|
|
continue;
|
|
|
|
if (Token::Match(tok->link(), ") %num%")) {
|
|
tok = tok->link();
|
|
continue;
|
|
}
|
|
|
|
// !!operator = ( x ) ;
|
|
if (tok->strAt(-2) != "operator" &&
|
|
tok->previous() && tok->previous()->str() == "=" &&
|
|
tok->next() && tok->next()->str() != "{" &&
|
|
Token::simpleMatch(tok->link(), ") ;")) {
|
|
tok->link()->deleteThis();
|
|
tok->deleteThis();
|
|
continue;
|
|
}
|
|
|
|
while (Token::simpleMatch(tok, "( (") &&
|
|
tok->link() && tok->link()->previous() == tok->next()->link()) {
|
|
// We have "(( *something* ))", remove the inner
|
|
// parentheses
|
|
tok->deleteNext();
|
|
tok->link()->tokAt(-2)->deleteNext();
|
|
ret = true;
|
|
}
|
|
|
|
if (isCPP() && Token::Match(tok->tokAt(-2), "[;{}=(] new (") && Token::Match(tok->link(), ") [;,{}[]")) {
|
|
// Remove the parentheses in "new (type)" constructs
|
|
tok->link()->deleteThis();
|
|
tok->deleteThis();
|
|
ret = true;
|
|
}
|
|
|
|
if (Token::Match(tok->previous(), "! ( %name% )")) {
|
|
// Remove the parentheses
|
|
tok->deleteThis();
|
|
tok->deleteNext();
|
|
ret = true;
|
|
}
|
|
|
|
if (Token::Match(tok->previous(), "[(,;{}] ( %name% ) .")) {
|
|
// Remove the parentheses
|
|
tok->deleteThis();
|
|
tok->deleteNext();
|
|
ret = true;
|
|
}
|
|
|
|
if (Token::Match(tok->previous(), "[(,;{}] ( %name% (") &&
|
|
tok->link()->previous() == tok->linkAt(2)) {
|
|
// We have "( func ( *something* ))", remove the outer
|
|
// parentheses
|
|
tok->link()->deleteThis();
|
|
tok->deleteThis();
|
|
ret = true;
|
|
}
|
|
|
|
if (Token::Match(tok->previous(), "[,;{}] ( delete [| ]| %name% ) ;")) {
|
|
// We have "( delete [| ]| var )", remove the outer
|
|
// parentheses
|
|
tok->link()->deleteThis();
|
|
tok->deleteThis();
|
|
ret = true;
|
|
}
|
|
|
|
if (!Token::simpleMatch(tok->tokAt(-2), "operator delete") &&
|
|
Token::Match(tok->previous(), "delete|; (") &&
|
|
(tok->previous()->str() != "delete" || tok->next()->varId() > 0) &&
|
|
Token::Match(tok->link(), ") ;|,")) {
|
|
tok->link()->deleteThis();
|
|
tok->deleteThis();
|
|
ret = true;
|
|
}
|
|
|
|
if (Token::Match(tok->previous(), "[(!*;{}] ( %name% )") &&
|
|
(tok->next()->varId() != 0 || Token::Match(tok->tokAt(3), "[+-/=]")) && !tok->next()->isStandardType()) {
|
|
// We have "( var )", remove the parentheses
|
|
tok->deleteThis();
|
|
tok->deleteNext();
|
|
ret = true;
|
|
}
|
|
|
|
while (Token::Match(tok->previous(), "[;{}[(,!*] ( %name% .")) {
|
|
Token *tok2 = tok->tokAt(2);
|
|
while (Token::Match(tok2, ". %name%")) {
|
|
tok2 = tok2->tokAt(2);
|
|
}
|
|
if (tok2 != tok->link())
|
|
break;
|
|
// We have "( var . var . ... . var )", remove the parentheses
|
|
tok = tok->previous();
|
|
tok->deleteNext();
|
|
tok2->deleteThis();
|
|
ret = true;
|
|
continue;
|
|
}
|
|
|
|
if (Token::simpleMatch(tok->previous(), "? (") && Token::simpleMatch(tok->link(), ") :")) {
|
|
const Token *tok2 = tok->next();
|
|
while (tok2 && (Token::Match(tok2,"%bool%|%num%|%name%") || tok2->isArithmeticalOp()))
|
|
tok2 = tok2->next();
|
|
if (tok2 && tok2->str() == ")") {
|
|
tok->link()->deleteThis();
|
|
tok->deleteThis();
|
|
ret = true;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
while (Token::Match(tok->previous(), "[{([,] ( !!{") &&
|
|
Token::Match(tok->link(), ") [;,])]") &&
|
|
!Token::simpleMatch(tok->tokAt(-2), "operator ,") && // Ticket #5709
|
|
!Token::findsimplematch(tok, ",", tok->link())) {
|
|
// We have "( ... )", remove the parentheses
|
|
tok->link()->deleteThis();
|
|
tok->deleteThis();
|
|
ret = true;
|
|
}
|
|
|
|
if (Token::simpleMatch(tok->previous(), ", (") &&
|
|
Token::simpleMatch(tok->link(), ") =")) {
|
|
tok->link()->deleteThis();
|
|
tok->deleteThis();
|
|
ret = true;
|
|
}
|
|
|
|
// Simplify "!!operator !!%name%|)|>|>> ( %num%|%bool% ) %op%|;|,|)"
|
|
if (Token::Match(tok, "( %bool%|%num% ) %cop%|;|,|)") &&
|
|
tok->strAt(-2) != "operator" &&
|
|
tok->previous() &&
|
|
!Token::Match(tok->previous(), "%name%|)") &&
|
|
(!(isCPP() && Token::Match(tok->previous(),">|>>")))) {
|
|
tok->link()->deleteThis();
|
|
tok->deleteThis();
|
|
ret = true;
|
|
}
|
|
|
|
if (Token::Match(tok->previous(), "*|& ( %name% )")) {
|
|
// We may have a variable declaration looking like "type_name *(var_name)"
|
|
Token *tok2 = tok->tokAt(-2);
|
|
while (tok2 && Token::Match(tok2, "%type%|static|const|extern") && tok2->str() != "operator") {
|
|
tok2 = tok2->previous();
|
|
}
|
|
if (tok2 && !Token::Match(tok2, "[;,{]")) {
|
|
// Not a variable declaration
|
|
} else {
|
|
tok->deleteThis();
|
|
tok->deleteNext();
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
void Tokenizer::simplifyCharAt()
|
|
{
|
|
// Replace "string"[0] with 's'
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "%str% [ %num% ]")) {
|
|
const MathLib::bigint index = MathLib::toLongNumber(tok->strAt(2));
|
|
// Check within range
|
|
if (index >= 0 && index <= Token::getStrLength(tok)) {
|
|
tok->str("'" + Token::getCharAt(tok, index) + "'");
|
|
tok->deleteNext(3);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyReference()
|
|
{
|
|
if (isC())
|
|
return;
|
|
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
// starting executable scope..
|
|
Token *start = const_cast<Token *>(startOfExecutableScope(tok));
|
|
if (start) {
|
|
tok = start;
|
|
// replace references in this scope..
|
|
Token * const end = tok->link();
|
|
for (Token *tok2 = tok; tok2 && tok2 != end; tok2 = tok2->next()) {
|
|
// found a reference..
|
|
if (Token::Match(tok2, "[;{}] %type% & %name% (|= %name% )| ;")) {
|
|
const unsigned int refId = tok2->tokAt(3)->varId();
|
|
if (!refId)
|
|
continue;
|
|
|
|
// replace reference in the code..
|
|
for (Token *tok3 = tok2->tokAt(7); tok3 && tok3 != end; tok3 = tok3->next()) {
|
|
if (tok3->varId() == refId) {
|
|
tok3->str(tok2->strAt(5));
|
|
tok3->varId(tok2->tokAt(5)->varId());
|
|
}
|
|
}
|
|
|
|
tok2->deleteNext(6+(tok2->strAt(6)==")" ? 1 : 0));
|
|
}
|
|
}
|
|
tok = end;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool Tokenizer::simplifyCalculations()
|
|
{
|
|
return TemplateSimplifier::simplifyCalculations(list.front());
|
|
}
|
|
|
|
void Tokenizer::simplifyOffsetPointerDereference()
|
|
{
|
|
// Replace "*(str + num)" => "str[num]" and
|
|
// Replace "*(str - num)" => "str[-num]"
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (!tok->isName() && !tok->isLiteral()
|
|
&& !Token::Match(tok, "]|)|++|--")
|
|
&& Token::Match(tok->next(), "* ( %name% +|- %num%|%name% )")) {
|
|
|
|
// remove '* ('
|
|
tok->deleteNext(2);
|
|
|
|
// '+'->'['
|
|
tok = tok->tokAt(2);
|
|
Token* const openBraceTok = tok;
|
|
const bool isNegativeIndex = (tok->str() == "-");
|
|
tok->str("[");
|
|
|
|
// Insert a "-" in front of the number or variable
|
|
if (isNegativeIndex) {
|
|
if (tok->next()->isName()) {
|
|
tok->insertToken("-");
|
|
tok = tok->next();
|
|
} else
|
|
tok->next()->str(std::string("-") + tok->next()->str());
|
|
}
|
|
|
|
tok = tok->tokAt(2);
|
|
tok->str("]");
|
|
Token::createMutualLinks(openBraceTok, tok);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyOffsetPointerReference()
|
|
{
|
|
std::set<unsigned int> pod;
|
|
for (const Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->isStandardType()) {
|
|
tok = tok->next();
|
|
while (tok && (tok->str() == "*" || tok->isName())) {
|
|
if (tok->varId() > 0) {
|
|
pod.insert(tok->varId());
|
|
break;
|
|
}
|
|
tok = tok->next();
|
|
}
|
|
if (!tok)
|
|
break;
|
|
}
|
|
}
|
|
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (!Token::Match(tok, "%num%|%name%|]|)") &&
|
|
(Token::Match(tok->next(), "& %name% [ %num%|%name% ] !!["))) {
|
|
tok = tok->next();
|
|
|
|
if (tok->next()->varId()) {
|
|
if (pod.find(tok->next()->varId()) == pod.end()) {
|
|
tok = tok->tokAt(5);
|
|
if (!tok)
|
|
syntaxError(tok);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// '&' => '('
|
|
tok->str("(");
|
|
|
|
tok = tok->next();
|
|
// '[' => '+'
|
|
tok->deleteNext();
|
|
tok->insertToken("+");
|
|
|
|
tok = tok->tokAt(3);
|
|
//remove ']'
|
|
tok->str(")");
|
|
Token::createMutualLinks(tok->tokAt(-4), tok);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyNestedStrcat()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (! Token::Match(tok, "[;{}] strcat ( strcat (")) {
|
|
continue;
|
|
}
|
|
|
|
// find inner strcat call
|
|
Token *tok2 = tok->tokAt(3);
|
|
while (Token::simpleMatch(tok2, "strcat ( strcat"))
|
|
tok2 = tok2->tokAt(2);
|
|
|
|
if (tok2->strAt(3) != ",")
|
|
continue;
|
|
|
|
// If we have this code:
|
|
// strcat(strcat(dst, foo), bar);
|
|
// We move this part of code before all strcat() calls: strcat(dst, foo)
|
|
// And place "dst" token where the code was.
|
|
Token *prevTok = tok2->previous();
|
|
|
|
// Move tokens to new place
|
|
Token::move(tok2, tok2->next()->link(), tok);
|
|
tok = tok2->next()->link();
|
|
|
|
// Insert the "dst" token
|
|
prevTok->insertToken(tok2->strAt(2));
|
|
prevTok->next()->varId(tok2->tokAt(2)->varId());
|
|
|
|
// Insert semicolon after the moved strcat()
|
|
tok->insertToken(";");
|
|
}
|
|
}
|
|
|
|
// Check if this statement is a duplicate definition. A duplicate
|
|
// definition will hide the enumerator within it's scope so just
|
|
// skip the entire scope of the duplicate.
|
|
bool Tokenizer::duplicateDefinition(Token ** tokPtr) 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 function argument
|
|
if (Token::Match(tok->previous(), "(|,"))
|
|
return false;
|
|
|
|
// find end of definition
|
|
int level = 0;
|
|
while (end->next() && (!Token::Match(end->next(), ";|)|>") ||
|
|
(end->next()->str() == ")" && level == 0))) {
|
|
if (end->next()->str() == "(")
|
|
++level;
|
|
else if (end->next()->str() == ")")
|
|
--level;
|
|
|
|
end = end->next();
|
|
}
|
|
} else if (end->str() == ")") {
|
|
// check for function argument
|
|
if (tok->previous()->str() == ",")
|
|
return false;
|
|
}
|
|
|
|
if (end) {
|
|
if (Token::simpleMatch(end, ") {")) { // function parameter ?
|
|
// make sure it's not a conditional
|
|
if (Token::Match(end->link()->previous(), "if|for|while|switch|BOOST_FOREACH") || Token::Match(end->link()->tokAt(-2), ":|,"))
|
|
return false;
|
|
|
|
// look backwards
|
|
if (tok->previous()->str() == "enum" ||
|
|
(Token::Match(tok->previous(), "%type%") &&
|
|
tok->previous()->str() != "return") ||
|
|
Token::Match(tok->tokAt(-2), "%type% &|*")) {
|
|
// duplicate definition so skip entire function
|
|
*tokPtr = end->next()->link();
|
|
return true;
|
|
}
|
|
} else if (end->str() == ">") { // template parameter ?
|
|
// look backwards
|
|
if (tok->previous()->str() == "enum" ||
|
|
(Token::Match(tok->previous(), "%type%") &&
|
|
tok->previous()->str() != "return")) {
|
|
// duplicate definition so skip entire template
|
|
while (end && end->str() != "{")
|
|
end = end->next();
|
|
if (end) {
|
|
*tokPtr = end->link();
|
|
return true;
|
|
}
|
|
}
|
|
} else {
|
|
if (Token::Match(tok->previous(), "enum|,"))
|
|
return true;
|
|
else if (Token::Match(tok->previous(), "%type%")) {
|
|
// look backwards
|
|
const Token *back = tok;
|
|
while (back && back->isName())
|
|
back = back->previous();
|
|
if (!back || (Token::Match(back, "[(,;{}]") && !Token::Match(back->next(),"return|throw")))
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
namespace {
|
|
const std::set<std::string> stdFunctionsPresentInC = make_container< std::set<std::string> > () <<
|
|
"strcat" <<
|
|
"strcpy" <<
|
|
"strncat" <<
|
|
"strncpy" <<
|
|
"free" <<
|
|
"malloc" <<
|
|
"strdup";
|
|
}
|
|
|
|
void Tokenizer::simplifyStd()
|
|
{
|
|
if (isC())
|
|
return;
|
|
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->str() != "std")
|
|
continue;
|
|
|
|
if (Token::Match(tok->previous(), "[(,{};] std :: %name% (") &&
|
|
stdFunctionsPresentInC.find(tok->strAt(2)) != stdFunctionsPresentInC.end()) {
|
|
tok->deleteNext();
|
|
tok->deleteThis();
|
|
}
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
// Helper functions for handling the tokens list
|
|
//---------------------------------------------------------------------------
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
bool Tokenizer::IsScopeNoReturn(const Token *endScopeToken, bool *unknown) const
|
|
{
|
|
std::string unknownFunc;
|
|
const bool ret = _settings->library.isScopeNoReturn(endScopeToken,&unknownFunc);
|
|
if (unknown)
|
|
*unknown = !unknownFunc.empty();
|
|
if (!unknownFunc.empty() && _settings->checkLibrary && _settings->isEnabled("information")) {
|
|
// Is function global?
|
|
bool globalFunction = true;
|
|
if (Token::simpleMatch(endScopeToken->tokAt(-2), ") ; }")) {
|
|
const Token * const ftok = endScopeToken->linkAt(-2)->previous();
|
|
if (ftok &&
|
|
ftok->isName() &&
|
|
ftok->function() &&
|
|
ftok->function()->nestedIn &&
|
|
ftok->function()->nestedIn->type != Scope::eGlobal) {
|
|
globalFunction = false;
|
|
}
|
|
}
|
|
|
|
// don't warn for nonglobal functions (class methods, functions hidden in namespaces) since they cant be configured yet
|
|
// FIXME: when methods and namespaces can be configured properly, remove the "globalFunction" check
|
|
if (globalFunction) {
|
|
reportError(endScopeToken->previous(),
|
|
Severity::information,
|
|
"checkLibraryNoReturn",
|
|
"--check-library: Function " + unknownFunc + "() should have <noreturn> configuration");
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
bool Tokenizer::isFunctionParameterPassedByValue(const Token *fpar) const
|
|
{
|
|
if (isC()) // C does not support references
|
|
return true;
|
|
|
|
// TODO: If symbol database is available, use it.
|
|
const Token *ftok;
|
|
|
|
// Look at function call, what parameter number is it?
|
|
unsigned int parameter = 1;
|
|
for (ftok = fpar->previous(); ftok; ftok = ftok->previous()) {
|
|
if (ftok->str() == "(")
|
|
break;
|
|
else if (ftok->str() == ")")
|
|
ftok = ftok->link();
|
|
else if (ftok->str() == ",")
|
|
++parameter;
|
|
else if (Token::Match(ftok, "[;{}]"))
|
|
break;
|
|
}
|
|
|
|
// Is this a function call?
|
|
if (ftok && Token::Match(ftok->tokAt(-2), "[;{}=] %name% (")) {
|
|
const std::string& functionName(ftok->previous()->str());
|
|
|
|
if (functionName == "return")
|
|
return true;
|
|
|
|
// Locate function declaration..
|
|
for (const Token *tok = tokens(); tok; tok = tok->next()) {
|
|
if (tok->str() == "{")
|
|
tok = tok->link();
|
|
else if (Token::Match(tok, "%type% (") && tok->str() == functionName) {
|
|
// Goto parameter
|
|
tok = tok->tokAt(2);
|
|
unsigned int par = 1;
|
|
while (tok && par < parameter) {
|
|
if (tok->str() == ")")
|
|
break;
|
|
if (tok->str() == ",")
|
|
++par;
|
|
tok = tok->next();
|
|
}
|
|
if (!tok)
|
|
return false;
|
|
|
|
// If parameter was found, determine if it's passed by value
|
|
if (par == parameter) {
|
|
bool knowntype = false;
|
|
while (tok && tok->isName()) {
|
|
knowntype |= tok->isStandardType();
|
|
knowntype |= (tok->str() == "struct");
|
|
tok = tok->next();
|
|
}
|
|
if (!tok || !knowntype)
|
|
return false;
|
|
if (tok->str() != "," && tok->str() != ")")
|
|
return false;
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
void Tokenizer::eraseDeadCode(Token *begin, const Token *end)
|
|
{
|
|
if (!begin)
|
|
return;
|
|
const bool isgoto = Token::Match(begin->tokAt(-2), "goto %name% ;");
|
|
unsigned int indentlevel = 1,
|
|
indentcase = 0,
|
|
indentswitch = 0,
|
|
indentlabel = 0,
|
|
roundbraces = 0,
|
|
indentcheck = 0;
|
|
std::vector<unsigned int> switchindents;
|
|
bool checklabel = false;
|
|
Token *tok = begin;
|
|
Token *tokcheck = nullptr;
|
|
while (tok->next() && tok->next() != end) {
|
|
if (tok->next()->str() == "(") {
|
|
++roundbraces;
|
|
tok->deleteNext();
|
|
continue;
|
|
} else if (tok->next()->str() == ")") {
|
|
if (!roundbraces)
|
|
break; //too many ending round parentheses
|
|
--roundbraces;
|
|
tok->deleteNext();
|
|
continue;
|
|
}
|
|
|
|
if (roundbraces) {
|
|
tok->deleteNext();
|
|
continue;
|
|
}
|
|
|
|
if (Token::Match(tok, "[{};] switch (")) {
|
|
if (!checklabel) {
|
|
if (!indentlabel) {
|
|
//remove 'switch ( ... )'
|
|
Token::eraseTokens(tok, tok->linkAt(2)->next());
|
|
} else {
|
|
tok = tok->linkAt(2);
|
|
}
|
|
if (tok->next()->str() == "{") {
|
|
++indentswitch;
|
|
indentcase = indentlevel + 1;
|
|
switchindents.push_back(indentcase);
|
|
}
|
|
} else {
|
|
tok = tok->linkAt(2);
|
|
if (Token::simpleMatch(tok, ") {")) {
|
|
++indentswitch;
|
|
indentcase = indentlevel + 1;
|
|
switchindents.push_back(indentcase);
|
|
}
|
|
}
|
|
} else if (tok->next()->str() == "{") {
|
|
++indentlevel;
|
|
if (!checklabel) {
|
|
checklabel = true;
|
|
tokcheck = tok;
|
|
indentcheck = indentlevel;
|
|
indentlabel = 0;
|
|
}
|
|
tok = tok->next();
|
|
} else if (tok->next()->str() == "}") {
|
|
--indentlevel;
|
|
if (!indentlevel)
|
|
break;
|
|
|
|
if (!checklabel) {
|
|
tok->deleteNext();
|
|
} else {
|
|
if (indentswitch && indentlevel == indentcase)
|
|
--indentlevel;
|
|
if (indentlevel < indentcheck) {
|
|
const Token *end2 = tok->next();
|
|
tok = end2->link()->previous(); //return to initial '{'
|
|
if (indentswitch && Token::simpleMatch(tok, ") {") && Token::Match(tok->link()->tokAt(-2), "[{};] switch ("))
|
|
tok = tok->link()->tokAt(-2); //remove also 'switch ( ... )'
|
|
Token::eraseTokens(tok, end2->next());
|
|
checklabel = false;
|
|
tokcheck = 0;
|
|
indentcheck = 0;
|
|
} else {
|
|
tok = tok->next();
|
|
}
|
|
}
|
|
if (indentswitch && indentlevel <= indentcase) {
|
|
--indentswitch;
|
|
switchindents.pop_back();
|
|
if (!indentswitch)
|
|
indentcase = 0;
|
|
else
|
|
indentcase = switchindents[indentswitch-1];
|
|
}
|
|
} else if (Token::Match(tok, "[{};:] case")) {
|
|
const Token *tok2 = Token::findsimplematch(tok->next(), ": ;", end);
|
|
if (!tok2) {
|
|
tok->deleteNext();
|
|
continue;
|
|
}
|
|
if (indentlevel == 1)
|
|
break; //it seems like the function was called inside a case-default block.
|
|
if (indentlevel == indentcase)
|
|
++indentlevel;
|
|
tok2 = tok2->next();
|
|
if (!checklabel || !indentswitch) {
|
|
Token::eraseTokens(tok, tok2->next());
|
|
} else {
|
|
tok = const_cast<Token *>(tok2);
|
|
}
|
|
} else if (Token::Match(tok, "[{};] default : ;")) {
|
|
if (indentlevel == 1)
|
|
break; //it seems like the function was called inside a case-default block.
|
|
if (indentlevel == indentcase)
|
|
++indentlevel;
|
|
if (!checklabel || !indentswitch) {
|
|
tok->deleteNext(3);
|
|
} else {
|
|
tok = tok->tokAt(3);
|
|
}
|
|
} else if (Token::Match(tok, "[{};] %name% : ;") && tok->next()->str() != "default") {
|
|
if (checklabel) {
|
|
indentlabel = indentlevel;
|
|
tok = tokcheck->next();
|
|
checklabel = false;
|
|
indentlevel = indentcheck;
|
|
} else {
|
|
if (indentswitch) {
|
|
//Before stopping the function, since the 'switch()'
|
|
//instruction is removed, there's no sense to keep the
|
|
//case instructions. Remove them, if there are any.
|
|
Token *tok2 = tok->tokAt(3);
|
|
unsigned int indentlevel2 = indentlevel;
|
|
while (tok2->next() && tok2->next() != end) {
|
|
if (Token::Match(tok2->next(), "{|[|(")) {
|
|
tok2 = tok2->next()->link();
|
|
} else if (Token::Match(tok2, "[{};:] case")) {
|
|
const Token *tok3 = Token::findsimplematch(tok2->next(), ": ;", end);
|
|
if (!tok3) {
|
|
tok2 = tok2->next();
|
|
continue;
|
|
}
|
|
Token::eraseTokens(tok2, tok3->next());
|
|
} else if (Token::Match(tok2, "[{};] default : ;")) {
|
|
tok2->deleteNext(3);
|
|
} else if (tok2->next()->str() == "}") {
|
|
--indentlevel2;
|
|
if (indentlevel2 <= indentcase)
|
|
break;
|
|
tok2 = tok2->next();
|
|
} else {
|
|
tok2 = tok2->next();
|
|
}
|
|
}
|
|
}
|
|
break; //stop removing tokens, we arrived to the label.
|
|
}
|
|
} else if (isgoto && Token::Match(tok, "[{};] do|while|for|BOOST_FOREACH")) {
|
|
//it's possible that code inside loop is not dead,
|
|
//because of the possible presence of the label pointed by 'goto'
|
|
const Token *start = tok->tokAt(2);
|
|
if (start && start->str() == "(")
|
|
start = start->link()->next();
|
|
if (start && start->str() == "{") {
|
|
std::string labelpattern = "[{};] " + begin->previous()->str() + " : ;";
|
|
bool simplify = true;
|
|
for (Token *tok2 = start->next(); tok2 != start->link(); tok2 = tok2->next()) {
|
|
if (Token::Match(tok2, labelpattern.c_str())) {
|
|
simplify = false;
|
|
break;
|
|
}
|
|
}
|
|
//bailout for now
|
|
if (!simplify)
|
|
break;
|
|
}
|
|
tok->deleteNext();
|
|
} else {
|
|
// no need to keep the other strings, remove them.
|
|
if (tok->strAt(1) == "while") {
|
|
if (tok->str() == "}" && tok->link()->strAt(-1) == "do")
|
|
tok->link()->previous()->deleteThis();
|
|
}
|
|
tok->deleteNext();
|
|
}
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
void Tokenizer::syntaxError(const Token *tok) const
|
|
{
|
|
printDebugOutput(0);
|
|
throw InternalError(tok, "syntax error", InternalError::SYNTAX);
|
|
}
|
|
|
|
void Tokenizer::syntaxError(const Token *tok, char c) const
|
|
{
|
|
printDebugOutput(0);
|
|
throw InternalError(tok,
|
|
std::string("Invalid number of character '") + c + "' " +
|
|
"when these macros are defined: '" + _configuration + "'.",
|
|
InternalError::SYNTAX);
|
|
}
|
|
|
|
void Tokenizer::unhandled_macro_class_x_y(const Token *tok) const
|
|
{
|
|
reportError(tok,
|
|
Severity::information,
|
|
"class_X_Y",
|
|
"The code '" +
|
|
tok->str() + " " +
|
|
tok->strAt(1) + " " +
|
|
tok->strAt(2) + " " +
|
|
tok->strAt(3) + "' is not handled. You can use -I or --include to add handling of this code.");
|
|
}
|
|
|
|
void Tokenizer::cppcheckError(const Token *tok) const
|
|
{
|
|
printDebugOutput(0);
|
|
throw InternalError(tok, "Analysis failed. If the code is valid then please report this failure.", InternalError::INTERNAL);
|
|
}
|
|
/**
|
|
* Helper function to check whether number is equal to integer constant X
|
|
* or floating point pattern X.0
|
|
* @param s the string to check
|
|
* @param intConstant the integer constant to check against
|
|
* @param floatConstant the string with stringified float constant to check against
|
|
* @return true in case s is equal to X or X.0 and false otherwise.
|
|
*/
|
|
static bool isNumberOneOf(const std::string &s, const MathLib::bigint& intConstant, const char* floatConstant)
|
|
{
|
|
if (MathLib::isInt(s)) {
|
|
if (MathLib::toLongNumber(s) == intConstant)
|
|
return true;
|
|
} else if (MathLib::isFloat(s)) {
|
|
if (MathLib::toString(MathLib::toDoubleNumber(s)) == floatConstant)
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
// Helper function to check whether number is zero (0 or 0.0 or 0E+0) or not?
|
|
// @param s the string to check
|
|
// @return true in case s is zero and false otherwise.
|
|
// ------------------------------------------------------------------------
|
|
bool Tokenizer::isZeroNumber(const std::string &s)
|
|
{
|
|
return isNumberOneOf(s, 0L, "0.0");
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
// Helper function to check whether number is one (1 or 0.1E+1 or 1E+0) or not?
|
|
// @param s the string to check
|
|
// @return true in case s is one and false otherwise.
|
|
// ------------------------------------------------------------------------
|
|
bool Tokenizer::isOneNumber(const std::string &s)
|
|
{
|
|
if (!MathLib::isPositive(s))
|
|
return false;
|
|
return isNumberOneOf(s, 1L, "1.0");
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
// Helper function to check whether number is two (2 or 0.2E+1 or 2E+0) or not?
|
|
// @param s the string to check
|
|
// @return true in case s is two and false otherwise.
|
|
// ------------------------------------------------------------------------
|
|
bool Tokenizer::isTwoNumber(const std::string &s)
|
|
{
|
|
if (!MathLib::isPositive(s))
|
|
return false;
|
|
return isNumberOneOf(s, 2L, "2.0");
|
|
}
|
|
|
|
// ------------------------------------------------------
|
|
// Simplify math functions.
|
|
// It simplifies following functions: atol(), abs(), fabs()
|
|
// labs(), llabs(), fmin(), fminl(), fminf(), fmax(), fmaxl()
|
|
// fmaxf(), isgreater(), isgreaterequal(), isless()
|
|
// islessgreater(), islessequal(), pow(), powf(), powl(),
|
|
// div(),ldiv(),lldiv(), cbrt(), cbrtl(), cbtrf(), sqrt(),
|
|
// sqrtf(), sqrtl(), exp(), expf(), expl(), exp2(),
|
|
// exp2f(), exp2l(), log2(), log2f(), log2l(), log1p(),
|
|
// log1pf(), log1pl(), log10(), log10l(), log10f(),
|
|
// log(),logf(),logl(),logb(),logbf(),logbl(), acosh()
|
|
// acoshf(), acoshl(), acos(), acosf(), acosl(), cosh()
|
|
// coshf(), coshf(), cos(), cosf(), cosl(), erfc(),
|
|
// erfcf(), erfcl(), ilogb(), ilogbf(), ilogbf(), erf(),
|
|
// erfl(), erff(), asin(), asinf(), asinf(), asinh(),
|
|
// asinhf(), asinhl(), tan(), tanf(), tanl(), tanh(),
|
|
// tanhf(), tanhl(), atan(), atanf(), atanl(), atanh(),
|
|
// atanhf(), atanhl(), expm1(), expm1l(), expm1f(), fma()
|
|
// in the tokenlist.
|
|
//
|
|
// Reference:
|
|
// - http://www.cplusplus.com/reference/cmath/
|
|
// ------------------------------------------------------
|
|
void Tokenizer::simplifyMathFunctions()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->isName() && !tok->varId() && tok->strAt(1) == "(") { // precondition for function
|
|
bool simplifcationMade = false;
|
|
if (Token::Match(tok, "atol ( %str% )")) { //@todo Add support for atoll()
|
|
if (Token::simpleMatch(tok->tokAt(-2), "std ::")) {
|
|
tok = tok->tokAt(-2);// set token index two steps back
|
|
tok->deleteNext(2); // delete "std ::"
|
|
}
|
|
const std::string& strNumber = tok->tokAt(2)->strValue(); // get number
|
|
const bool isNotAnInteger = (!MathLib::isInt(strNumber));// check: is not an integer
|
|
if (strNumber.empty() || isNotAnInteger) {
|
|
// Ignore strings which we can't convert
|
|
continue;
|
|
}
|
|
// Convert string into a number and insert into token list
|
|
tok->str(MathLib::toString(MathLib::toLongNumber(strNumber)));
|
|
// remove ( %num% )
|
|
tok->deleteNext(3);
|
|
simplifcationMade = true;
|
|
} else if (Token::Match(tok, "abs|fabs|labs|llabs ( %num% )")) {
|
|
if (Token::simpleMatch(tok->tokAt(-2), "std ::")) {
|
|
tok = tok->tokAt(-2);// set token index two steps back
|
|
tok->deleteNext(2); // delete "std ::"
|
|
}
|
|
// get number string
|
|
std::string strNumber(tok->strAt(2));
|
|
// is the string negative?
|
|
if (strNumber[0] == '-') {
|
|
strNumber = strNumber.substr(1); // remove '-' sign
|
|
}
|
|
tok->deleteNext(3); // delete e.g. abs ( 1 )
|
|
tok->str(strNumber); // insert result into token list
|
|
simplifcationMade = true;
|
|
} else if (Token::Match(tok, "fma|fmaf|fmal ( %any% , %any% , %any% )")) {
|
|
// Simplify: fma(a,b,c) == > ( a * b + c )
|
|
tok->tokAt(3)->str("*");
|
|
tok->tokAt(5)->str("+");
|
|
tok->deleteThis(); // delete fma call
|
|
simplifcationMade = true;
|
|
} else if (Token::Match(tok, "sqrt|sqrtf|sqrtl|cbrt|cbrtf|cbrtl ( %num% )")) {
|
|
// Simplify: sqrt(0) = 0 and cbrt(0) == 0
|
|
// sqrt(1) = 1 and cbrt(1) == 1
|
|
// get number string
|
|
const std::string& parameter(tok->strAt(2));
|
|
// is parameter 0 ?
|
|
if (isZeroNumber(parameter)) {
|
|
tok->deleteNext(3); // delete tokens
|
|
tok->str("0"); // insert result into token list
|
|
simplifcationMade = true;
|
|
} else if (isOneNumber(parameter)) {
|
|
tok->deleteNext(3); // delete tokens
|
|
tok->str("1"); // insert result into token list
|
|
simplifcationMade = true;
|
|
}
|
|
} else if (Token::Match(tok, "exp|expf|expl|exp2|exp2f|exp2l|cos|cosf|cosl|cosh|coshf|coshl|erfc|erfcf|erfcl ( %num% )")) {
|
|
// Simplify: exp[f|l](0) = 1 and exp2[f|l](0) = 1
|
|
// cosh[f|l](0) = 1 and cos[f|l](0) = 1
|
|
// erfc[f|l](0) = 1
|
|
// get number string
|
|
const std::string& parameter(tok->strAt(2));
|
|
// is parameter 0 ?
|
|
if (isZeroNumber(parameter)) {
|
|
tok->deleteNext(3); // delete tokens
|
|
tok->str("1"); // insert result into token list
|
|
simplifcationMade = true;
|
|
}
|
|
} else if (Token::Match(tok, "log1p|log1pf|log1pl|sin|sinf|sinl|sinh|sinhf|sinhl|erf|erff|erfl|asin|asinf|asinl|asinh|asinhf|asinhl|tan|tanf|tanl|tanh|tanhf|tanhl|atan|atanf|atanl|atanh|atanhf|atanhl|expm1|expm1f|expm1l ( %num% )")) {
|
|
// Simplify: log1p[f|l](0) = 0 and sin[f|l](0) = 0
|
|
// sinh[f|l](0) = 0 and erf[f|l](0) = 0
|
|
// asin[f|l](0) = 0 and sinh[f|l](0) = 0
|
|
// tan[f|l](0) = 0 and tanh[f|l](0) = 0
|
|
// atan[f|l](0) = 0 and atanh[f|l](0)= 0
|
|
// expm1[f|l](0) = 0
|
|
// get number string
|
|
const std::string& parameter(tok->strAt(2));
|
|
// is parameter 0 ?
|
|
if (isZeroNumber(parameter)) {
|
|
tok->deleteNext(3); // delete tokens
|
|
tok->str("0"); // insert result into token list
|
|
simplifcationMade = true;
|
|
}
|
|
} else if (Token::Match(tok, "log2|log2f|log2l|log|logf|logl|log10|log10f|log10l|logb|logbf|logbl|acosh|acoshf|acoshl|acos|acosf|acosl|ilogb|ilogbf|ilogbl ( %num% )")) {
|
|
// Simplify: log2[f|l](1) = 0 , log10[f|l](1) = 0
|
|
// log[f|l](1) = 0 , logb10[f|l](1) = 0
|
|
// acosh[f|l](1) = 0 , acos[f|l](1) = 0
|
|
// ilogb[f|l](1) = 0
|
|
// get number string
|
|
const std::string& parameter(tok->strAt(2));
|
|
// is parameter 1 ?
|
|
if (isOneNumber(parameter)) {
|
|
tok->deleteNext(3); // delete tokens
|
|
tok->str("0"); // insert result into token list
|
|
simplifcationMade = true;
|
|
}
|
|
} else if (Token::Match(tok, "fmin|fminl|fminf ( %num% , %num% )")) {
|
|
// @todo if one of the parameters is NaN the other is returned
|
|
// e.g. printf ("fmin (NaN, -1.0) = %f\n", fmin(NaN,-1.0));
|
|
// e.g. printf ("fmin (-1.0, NaN) = %f\n", fmin(-1.0,NaN));
|
|
const std::string& strLeftNumber(tok->strAt(2));
|
|
const std::string& strRightNumber(tok->strAt(4));
|
|
const bool isLessEqual = MathLib::isLessEqual(strLeftNumber, strRightNumber);
|
|
// case: left <= right ==> insert left
|
|
if (isLessEqual) {
|
|
tok->str(strLeftNumber); // insert e.g. -1.0
|
|
tok->deleteNext(5); // delete e.g. fmin ( -1.0, 1.0 )
|
|
simplifcationMade = true;
|
|
} else { // case left > right ==> insert right
|
|
tok->str(strRightNumber); // insert e.g. 0.0
|
|
tok->deleteNext(5); // delete e.g. fmin ( 1.0, 0.0 )
|
|
simplifcationMade = true;
|
|
}
|
|
} else if (Token::Match(tok, "fmax|fmaxl|fmaxf ( %num% , %num% )")) {
|
|
// @todo if one of the parameters is NaN the other is returned
|
|
// e.g. printf ("fmax (NaN, -1.0) = %f\n", fmax(NaN,-1.0));
|
|
// e.g. printf ("fmax (-1.0, NaN) = %f\n", fmax(-1.0,NaN));
|
|
const std::string& strLeftNumber(tok->strAt(2));
|
|
const std::string& strRightNumber(tok->strAt(4));
|
|
const bool isLessEqual = MathLib::isLessEqual(strLeftNumber, strRightNumber);
|
|
// case: left <= right ==> insert right
|
|
if (isLessEqual) {
|
|
tok->str(strRightNumber);// insert e.g. 1.0
|
|
tok->deleteNext(5); // delete e.g. fmax ( -1.0, 1.0 )
|
|
simplifcationMade = true;
|
|
} else { // case left > right ==> insert left
|
|
tok->str(strLeftNumber); // insert e.g. 1.0
|
|
tok->deleteNext(5); // delete e.g. fmax ( 1.0, 0.0 )
|
|
simplifcationMade = true;
|
|
}
|
|
} else if (Token::Match(tok, "isgreater ( %num% , %num% )")) {
|
|
// The isgreater(x,y) function is the same as calculating (x)>(y).
|
|
// It returns true (1) if x is greater than y and false (0) otherwise.
|
|
const std::string& strLeftNumber(tok->strAt(2)); // get left number
|
|
const std::string& strRightNumber(tok->strAt(4)); // get right number
|
|
const bool isGreater = MathLib::isGreater(strLeftNumber, strRightNumber); // compare numbers
|
|
tok->deleteNext(5); // delete tokens
|
|
tok->str((isGreater == true) ? "true": "false"); // insert results
|
|
simplifcationMade = true;
|
|
} else if (Token::Match(tok, "isgreaterequal ( %num% , %num% )")) {
|
|
// The isgreaterequal(x,y) function is the same as calculating (x)>=(y).
|
|
// It returns true (1) if x is greater than or equal to y.
|
|
// False (0) is returned otherwise.
|
|
const std::string& strLeftNumber(tok->strAt(2)); // get left number
|
|
const std::string& strRightNumber(tok->strAt(4)); // get right number
|
|
const bool isGreaterEqual = MathLib::isGreaterEqual(strLeftNumber, strRightNumber); // compare numbers
|
|
tok->deleteNext(5); // delete tokens
|
|
tok->str((isGreaterEqual == true) ? "true": "false"); // insert results
|
|
simplifcationMade = true;
|
|
} else if (Token::Match(tok, "isless ( %num% , %num% )")) {
|
|
// Calling this function is the same as calculating (x)<(y).
|
|
// It returns true (1) if x is less than y.
|
|
// False (0) is returned otherwise.
|
|
const std::string& strLeftNumber(tok->strAt(2)); // get left number
|
|
const std::string& strRightNumber(tok->strAt(4)); // get right number
|
|
const bool isLess = MathLib::isLess(strLeftNumber, strRightNumber); // compare numbers
|
|
tok->deleteNext(5); // delete tokens
|
|
tok->str((isLess == true) ? "true": "false"); // insert results
|
|
simplifcationMade = true;
|
|
} else if (Token::Match(tok, "islessequal ( %num% , %num% )")) {
|
|
// Calling this function is the same as calculating (x)<=(y).
|
|
// It returns true (1) if x is less or equal to y.
|
|
// False (0) is returned otherwise.
|
|
const std::string& strLeftNumber(tok->strAt(2)); // get left number
|
|
const std::string& strRightNumber(tok->strAt(4)); // get right number
|
|
const bool isLessEqual = MathLib::isLessEqual(strLeftNumber, strRightNumber); // compare numbers
|
|
tok->deleteNext(5); // delete tokens
|
|
tok->str((isLessEqual == true) ? "true": "false"); // insert results
|
|
simplifcationMade = true;
|
|
} else if (Token::Match(tok, "islessgreater ( %num% , %num% )")) {
|
|
// Calling this function is the same as calculating (x)<(y) || (x)>(y).
|
|
// It returns true (1) if x is less than y or x is greater than y.
|
|
// False (0) is returned otherwise.
|
|
const std::string& strLeftNumber(tok->strAt(2)); // get left number
|
|
const std::string& strRightNumber(tok->strAt(4)); // get right number
|
|
const bool isLessOrGreater(MathLib::isLess(strLeftNumber, strRightNumber) ||
|
|
MathLib::isGreater(strLeftNumber, strRightNumber)); // compare numbers
|
|
tok->deleteNext(5); // delete tokens
|
|
tok->str((isLessOrGreater == true) ? "true": "false"); // insert results
|
|
simplifcationMade = true;
|
|
} else if (Token::Match(tok, "div|ldiv|lldiv ( %any% , %num% )")) {
|
|
// Calling the function 'div(x,y)' is the same as calculating (x)/(y). In case y has the value 1
|
|
// (the identity element), the call can be simplified to (x).
|
|
const std::string& leftParameter(tok->strAt(2)); // get the left parameter
|
|
const std::string& rightNumber(tok->strAt(4)); // get right number
|
|
if (isOneNumber(rightNumber)) {
|
|
tok->str(leftParameter); // insert simplified result
|
|
tok->deleteNext(5); // delete tokens
|
|
simplifcationMade = true;
|
|
}
|
|
} else if (Token::Match(tok, "pow|powf|powl (")) {
|
|
if (Token::Match(tok->tokAt(2), "%num% , %num% )")) {
|
|
// In case of pow ( 0 , anyNumber > 0): It can be simplified to 0
|
|
// In case of pow ( 0 , 0 ): It simplified to 1
|
|
// In case of pow ( 1 , anyNumber ): It simplified to 1
|
|
const std::string& leftNumber(tok->strAt(2)); // get the left parameter
|
|
const std::string& rightNumber(tok->strAt(4)); // get the right parameter
|
|
const bool isLeftNumberZero = isZeroNumber(leftNumber);
|
|
const bool isLeftNumberOne = isOneNumber(leftNumber);
|
|
const bool isRightNumberZero = isZeroNumber(rightNumber);
|
|
if (isLeftNumberZero && !isRightNumberZero && MathLib::isPositive(rightNumber)) { // case: 0^(y) = 0 and y > 0
|
|
tok->deleteNext(5); // delete tokens
|
|
tok->str("0"); // insert simplified result
|
|
simplifcationMade = true;
|
|
} else if (isLeftNumberZero && isRightNumberZero) { // case: 0^0 = 1
|
|
tok->deleteNext(5); // delete tokens
|
|
tok->str("1"); // insert simplified result
|
|
simplifcationMade = true;
|
|
} else if (isLeftNumberOne) { // case 1^(y) = 1
|
|
tok->deleteNext(5); // delete tokens
|
|
tok->str("1"); // insert simplified result
|
|
simplifcationMade = true;
|
|
}
|
|
}
|
|
if (Token::Match(tok->tokAt(2), "%any% , %num% )")) {
|
|
// In case of pow( x , 1 ): It can be simplified to x.
|
|
const std::string& leftParameter(tok->strAt(2)); // get the left parameter
|
|
const std::string& rightNumber(tok->strAt(4)); // get right number
|
|
if (isOneNumber(rightNumber)) { // case: x^(1) = x
|
|
tok->str(leftParameter); // insert simplified result
|
|
tok->deleteNext(5); // delete tokens
|
|
simplifcationMade = true;
|
|
} else if (isZeroNumber(rightNumber)) { // case: x^(0) = 1
|
|
tok->deleteNext(5); // delete tokens
|
|
tok->str("1"); // insert simplified result
|
|
simplifcationMade = true;
|
|
}
|
|
}
|
|
}
|
|
// Jump back to begin of statement if a simplification was performed
|
|
if (simplifcationMade) {
|
|
while (tok->previous() && tok->str() != ";") {
|
|
tok = tok->previous();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyComma()
|
|
{
|
|
bool inReturn = false;
|
|
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
|
|
// skip enums
|
|
if (Token::Match(tok, "enum class| %name%| :| %name%| {")) {
|
|
while (tok && tok->str() != "{")
|
|
tok = tok->next();
|
|
if (tok)
|
|
tok = tok->link()->next();
|
|
}
|
|
|
|
if (!tok)
|
|
syntaxError(nullptr); // invalid code like in #4195
|
|
if (Token::Match(tok, "(|[") ||
|
|
(tok->str() == "{" && tok->previous() && tok->previous()->str() == "=")) {
|
|
tok = tok->link();
|
|
continue;
|
|
}
|
|
|
|
// Skip unhandled template specifiers..
|
|
if (tok->link() && tok->str() == "<")
|
|
tok = tok->link();
|
|
|
|
if (tok->str() == "return" && Token::Match(tok->previous(), "[;{}]"))
|
|
inReturn = true;
|
|
|
|
if (inReturn && Token::Match(tok, "[;{}?:]"))
|
|
inReturn = false;
|
|
|
|
if (!tok->next() || tok->str() != ",")
|
|
continue;
|
|
|
|
// We must not accept just any keyword, e.g. accepting int
|
|
// would cause function parameters to corrupt.
|
|
if (isCPP() && tok->strAt(1) == "delete") {
|
|
// Handle "delete a, delete b;"
|
|
tok->str(";");
|
|
}
|
|
|
|
if (isCPP() && Token::Match(tok->tokAt(-2), "delete %name% , %name% ;") &&
|
|
tok->next()->varId() != 0) {
|
|
// Handle "delete a, b;" - convert to delete a; b;
|
|
tok->str(";");
|
|
} else if (!inReturn && tok->tokAt(-2)) {
|
|
bool replace = false;
|
|
for (Token *tok2 = tok->previous(); tok2; tok2 = tok2->previous()) {
|
|
if (tok2->str() == "=") {
|
|
// Handle "a = 0, b = 0;"
|
|
replace = true;
|
|
} else if (isCPP() && (Token::Match(tok2, "delete %name%") ||
|
|
Token::Match(tok2, "delete [ ] %name%"))) {
|
|
// Handle "delete a, a = 0;"
|
|
replace = true;
|
|
} else if (Token::Match(tok2, "[?:;,{}()]")) {
|
|
if (replace && Token::Match(tok2, "[;{}]"))
|
|
tok->str(";");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// find token where return ends and also count commas
|
|
if (inReturn) {
|
|
Token *startFrom = nullptr; // "[;{}]" token before "return"
|
|
Token *endAt = nullptr; // first ";" token after "[;{}] return"
|
|
|
|
// find "; return" pattern before comma
|
|
for (Token *tok2 = tok->previous(); tok2; tok2 = tok2->previous()) {
|
|
if (tok2->str() == "return") {
|
|
startFrom = tok2->previous();
|
|
break;
|
|
}
|
|
}
|
|
if (!startFrom)
|
|
// to be very sure...
|
|
return;
|
|
std::size_t commaCounter = 0;
|
|
for (Token *tok2 = startFrom->next(); tok2; tok2 = tok2->next()) {
|
|
if (tok2->str() == ";") {
|
|
endAt = tok2;
|
|
break;
|
|
|
|
} else if (Token::Match(tok2, "(|[") ||
|
|
(tok2->str() == "{" && tok2->previous() && tok2->previous()->str() == "=")) {
|
|
tok2 = tok2->link();
|
|
|
|
} else if (tok2->str() == ",") {
|
|
++commaCounter;
|
|
}
|
|
}
|
|
|
|
if (!endAt)
|
|
//probably a syntax error
|
|
return;
|
|
|
|
if (commaCounter) {
|
|
// change tokens:
|
|
// "; return a ( ) , b ( ) , c ;"
|
|
// to
|
|
// "; a ( ) ; b ( ) ; return c ;"
|
|
|
|
// remove "return"
|
|
startFrom->deleteNext();
|
|
for (Token *tok2 = startFrom->next(); tok2 != endAt; tok2 = tok2->next()) {
|
|
if (Token::Match(tok2, "(|[") ||
|
|
(tok2->str() == "{" && tok2->previous() && tok2->previous()->str() == "=")) {
|
|
tok2 = tok2->link();
|
|
|
|
} else if (tok2->str() == ",") {
|
|
tok2->str(";");
|
|
--commaCounter;
|
|
if (commaCounter == 0) {
|
|
tok2->insertToken("return");
|
|
}
|
|
}
|
|
}
|
|
tok = endAt;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void Tokenizer::validate() const
|
|
{
|
|
std::stack<const Token *> linkTokens;
|
|
const Token *lastTok = nullptr;
|
|
for (const Token *tok = tokens(); tok; tok = tok->next()) {
|
|
lastTok = tok;
|
|
if (Token::Match(tok, "[{([]") || (tok->str() == "<" && tok->link())) {
|
|
if (tok->link() == nullptr)
|
|
cppcheckError(tok);
|
|
|
|
linkTokens.push(tok);
|
|
}
|
|
|
|
else if (Token::Match(tok, "[})]]") || (tok->str() == ">" && tok->link())) {
|
|
if (tok->link() == nullptr)
|
|
cppcheckError(tok);
|
|
|
|
if (linkTokens.empty() == true)
|
|
cppcheckError(tok);
|
|
|
|
if (tok->link() != linkTokens.top())
|
|
cppcheckError(tok);
|
|
|
|
if (tok != tok->link()->link())
|
|
cppcheckError(tok);
|
|
|
|
linkTokens.pop();
|
|
}
|
|
|
|
else if (tok->link() != nullptr)
|
|
cppcheckError(tok);
|
|
}
|
|
|
|
if (!linkTokens.empty())
|
|
cppcheckError(linkTokens.top());
|
|
|
|
// Validate that the Tokenizer::list.back() is updated correctly during simplifications
|
|
if (lastTok != list.back())
|
|
cppcheckError(lastTok);
|
|
}
|
|
|
|
std::string Tokenizer::simplifyString(const std::string &source)
|
|
{
|
|
std::string str = source;
|
|
|
|
for (std::string::size_type i = 0; i + 1U < str.size(); ++i) {
|
|
if (str[i] != '\\')
|
|
continue;
|
|
|
|
int c = 'a'; // char
|
|
unsigned int sz = 0; // size of stringdata
|
|
if (str[i+1] == 'x') {
|
|
sz = 2;
|
|
while (sz < 4 && std::isxdigit((unsigned char)str[i+sz]))
|
|
sz++;
|
|
if (sz > 2) {
|
|
std::istringstream istr(str.substr(i+2, sz-2));
|
|
istr >> std::hex >> c;
|
|
}
|
|
} else if (MathLib::isOctalDigit(str[i+1])) {
|
|
sz = 2;
|
|
while (sz < 4 && MathLib::isOctalDigit(str[i+sz]))
|
|
sz++;
|
|
std::istringstream istr(str.substr(i+1, sz-1));
|
|
istr >> std::oct >> c;
|
|
str = str.substr(0,i) + (char)c + str.substr(i+sz);
|
|
continue;
|
|
}
|
|
|
|
if (sz <= 2)
|
|
i++;
|
|
else if (i+sz < str.size())
|
|
str.replace(i, sz, std::string(1U, (char)c));
|
|
else
|
|
str.replace(i, str.size() - i - 1U, "a");
|
|
}
|
|
|
|
return str;
|
|
}
|
|
|
|
void Tokenizer::simplifyWhile0()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
// while (0)
|
|
const bool while0(Token::Match(tok->previous(), "[{};] while ( 0|false )"));
|
|
|
|
// for (0) - not banal, ticket #3140
|
|
const bool for0((Token::Match(tok->previous(), "[{};] for ( %name% = %num% ; %name% < %num% ;") &&
|
|
tok->strAt(2) == tok->strAt(6) && tok->strAt(4) == tok->strAt(8)) ||
|
|
(Token::Match(tok->previous(), "[{};] for ( %type% %name% = %num% ; %name% < %num% ;") &&
|
|
tok->strAt(3) == tok->strAt(7) && tok->strAt(5) == tok->strAt(9)));
|
|
|
|
if (!while0 && !for0)
|
|
continue;
|
|
|
|
if (while0 && tok->previous()->str() == "}") {
|
|
// find "do"
|
|
Token *tok2 = tok->previous()->link();
|
|
tok2 = tok2->previous();
|
|
if (tok2 && tok2->str() == "do") {
|
|
const bool flowmatch = Token::findmatch(tok2, "continue|break", tok) != nullptr;
|
|
// delete "do ({)"
|
|
tok2->deleteThis();
|
|
if (!flowmatch)
|
|
tok2->deleteThis();
|
|
|
|
// delete "(}) while ( 0 ) (;)"
|
|
tok = tok->previous();
|
|
tok->deleteNext(4); // while ( 0 )
|
|
if (tok->next() && tok->next()->str() == ";")
|
|
tok->deleteNext(); // ;
|
|
if (!flowmatch)
|
|
tok->deleteThis(); // }
|
|
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// remove "while (0) { .. }"
|
|
if (Token::simpleMatch(tok->next()->link(), ") {")) {
|
|
Token *end = tok->next()->link(), *old_prev = tok->previous();
|
|
end = end->next()->link();
|
|
eraseDeadCode(old_prev, end->next());
|
|
if (old_prev && old_prev->next())
|
|
tok = old_prev->next();
|
|
else
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyErrNoInWhile()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->str() != "errno")
|
|
continue;
|
|
|
|
Token *endpar = nullptr;
|
|
if (Token::Match(tok->previous(), "&& errno == EINTR ) { ;| }"))
|
|
endpar = tok->tokAt(3);
|
|
else if (Token::Match(tok->tokAt(-2), "&& ( errno == EINTR ) ) { ;| }"))
|
|
endpar = tok->tokAt(4);
|
|
else
|
|
continue;
|
|
|
|
if (Token::simpleMatch(endpar->link()->previous(), "while (")) {
|
|
Token *tok1 = tok->previous();
|
|
if (tok1->str() == "(")
|
|
tok1 = tok1->previous();
|
|
|
|
// erase "&& errno == EINTR"
|
|
tok1 = tok1->previous();
|
|
Token::eraseTokens(tok1, endpar);
|
|
|
|
// tok is invalid.. move to endpar
|
|
tok = endpar;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void Tokenizer::simplifyFuncInWhile()
|
|
{
|
|
unsigned int count = 0;
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (!Token::Match(tok, "while ( %name% ( %name% ) ) {"))
|
|
continue;
|
|
|
|
Token *func = tok->tokAt(2);
|
|
Token *var = tok->tokAt(4);
|
|
Token *end = tok->next()->link()->next()->link();
|
|
|
|
const unsigned int varid = ++_varId; // Create new variable
|
|
const std::string varname("cppcheck:r" + MathLib::toString(++count));
|
|
tok->str("int");
|
|
tok->next()->insertToken(varname);
|
|
tok->tokAt(2)->varId(varid);
|
|
tok->insertToken("while");
|
|
tok->insertToken(";");
|
|
tok->insertToken(")");
|
|
tok->insertToken(var->str());
|
|
tok->next()->varId(var->varId());
|
|
tok->insertToken("(");
|
|
tok->insertToken(func->str());
|
|
tok->insertToken("=");
|
|
tok->insertToken(varname);
|
|
tok->next()->varId(varid);
|
|
Token::createMutualLinks(tok->tokAt(4), tok->tokAt(6));
|
|
end->previous()->insertToken(varname);
|
|
end->previous()->varId(varid);
|
|
end->previous()->insertToken("=");
|
|
Token::move(func, func->tokAt(3), end->previous());
|
|
end->previous()->insertToken(";");
|
|
|
|
tok = end;
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyStructDecl()
|
|
{
|
|
// A counter that is used when giving unique names for anonymous structs.
|
|
unsigned int count = 0;
|
|
|
|
// Skip simplification of unions in class definition
|
|
std::stack<bool> skip; // true = in function, false = not in function
|
|
skip.push(false);
|
|
|
|
// Add names for anonymous structs
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (!tok->isName())
|
|
continue;
|
|
// check for anonymous struct/union
|
|
if (Token::Match(tok, "struct|union {")) {
|
|
if (Token::Match(tok->next()->link(), "} *|&| %type% ,|;|[")) {
|
|
tok->insertToken("Anonymous" + MathLib::toString(count++));
|
|
}
|
|
}
|
|
// check for anonymous enum
|
|
else if ((Token::simpleMatch(tok, "enum {") && Token::Match(tok->next()->link(), "} %type%| ,|;|[")) ||
|
|
(Token::Match(tok, "enum : %type% {") && Token::Match(tok->linkAt(3), "} %type%| ,|;|["))) {
|
|
tok->insertToken("Anonymous" + MathLib::toString(count++));
|
|
}
|
|
}
|
|
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
|
|
// check for start of scope and determine if it is in a function
|
|
if (tok->str() == "{")
|
|
skip.push(Token::Match(tok->previous(), "const|)"));
|
|
|
|
// end of scope
|
|
else if (tok->str() == "}" && !skip.empty())
|
|
skip.pop();
|
|
|
|
// check for named struct/union
|
|
else if (Token::Match(tok, "class|struct|union|enum %type% :|{")) {
|
|
Token *start = tok;
|
|
while (Token::Match(start->previous(), "%type%"))
|
|
start = start->previous();
|
|
Token *type = tok->next();
|
|
Token *next = tok->tokAt(2);
|
|
|
|
while (next && next->str() != "{")
|
|
next = next->next();
|
|
if (!next)
|
|
continue;
|
|
skip.push(false);
|
|
tok = next->link();
|
|
if (!tok)
|
|
break; // see #4869 segmentation fault in Tokenizer::simplifyStructDecl (invalid code)
|
|
Token *restart = next;
|
|
|
|
// check for named type
|
|
if (Token::Match(tok->next(), "*|&| %type% ,|;|[|=")) {
|
|
tok->insertToken(";");
|
|
tok = tok->next();
|
|
while (!Token::Match(start, "struct|class|union|enum")) {
|
|
tok->insertToken(start->str());
|
|
tok = tok->next();
|
|
start->deleteThis();
|
|
}
|
|
if (!tok)
|
|
break; // see #4869 segmentation fault in Tokenizer::simplifyStructDecl (invalid code)
|
|
tok->insertToken(type->str());
|
|
if (start->str() != "class")
|
|
tok->insertToken(start->str());
|
|
}
|
|
|
|
tok = restart;
|
|
}
|
|
|
|
// check for anonymous struct/union
|
|
else if (Token::Match(tok, "struct|union {")) {
|
|
const bool inFunction = skip.top();
|
|
skip.push(false);
|
|
Token *tok1 = tok;
|
|
|
|
Token *restart = tok->next();
|
|
tok = tok->next()->link();
|
|
|
|
// unnamed anonymous struct/union so possibly remove it
|
|
if (tok && tok->next() && tok->next()->str() == ";") {
|
|
if (inFunction && tok1->str() == "union") {
|
|
// Try to create references in the union..
|
|
Token *tok2 = tok1->tokAt(2);
|
|
while (tok2) {
|
|
if (Token::Match(tok2, "%type% %name% ;"))
|
|
tok2 = tok2->tokAt(3);
|
|
else
|
|
break;
|
|
}
|
|
if (!Token::simpleMatch(tok2, "} ;"))
|
|
continue;
|
|
Token *vartok = nullptr;
|
|
tok2 = tok1->tokAt(2);
|
|
while (Token::Match(tok2, "%type% %name% ;")) {
|
|
if (!vartok) {
|
|
vartok = tok2->next();
|
|
tok2 = tok2->tokAt(3);
|
|
} else {
|
|
tok2->insertToken("&");
|
|
tok2 = tok2->tokAt(2);
|
|
tok2->insertToken(vartok->str());
|
|
tok2->next()->varId(vartok->varId());
|
|
tok2->insertToken("=");
|
|
tok2 = tok2->tokAt(4);
|
|
}
|
|
}
|
|
}
|
|
|
|
// don't remove unnamed anonymous unions from a class, struct or union
|
|
if (!(!inFunction && tok1->str() == "union")) {
|
|
skip.pop();
|
|
tok1->deleteThis();
|
|
if (tok1->next() == tok) {
|
|
tok1->deleteThis();
|
|
tok = tok1;
|
|
} else
|
|
tok1->deleteThis();
|
|
restart = tok1->previous();
|
|
tok->deleteThis();
|
|
if (tok->next())
|
|
tok->deleteThis();
|
|
}
|
|
}
|
|
|
|
if (!restart) {
|
|
simplifyStructDecl();
|
|
return;
|
|
} else if (!restart->next())
|
|
return;
|
|
|
|
tok = restart;
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyCallingConvention()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
while (Token::Match(tok, "__cdecl|__stdcall|__fastcall|__thiscall|__clrcall|__syscall|__pascal|__fortran|__far|__near|WINAPI|APIENTRY|CALLBACK")) {
|
|
tok->deleteThis();
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyDeclspec()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
while (Token::Match(tok, "__declspec|_declspec (") && tok->next()->link() && tok->next()->link()->next()) {
|
|
if (Token::Match(tok->tokAt(2), "noreturn|nothrow")) {
|
|
Token *tok1 = tok->next()->link()->next();
|
|
while (tok1 && !Token::Match(tok1, "%name%")) {
|
|
tok1 = tok1->next();
|
|
}
|
|
if (tok1) {
|
|
if (tok->strAt(2) == "noreturn")
|
|
tok1->isAttributeNoreturn(true);
|
|
else
|
|
tok1->isAttributeNothrow(true);
|
|
}
|
|
} else if (tok->strAt(2) == "property")
|
|
tok->next()->link()->insertToken("__property");
|
|
|
|
Token::eraseTokens(tok, tok->next()->link()->next());
|
|
tok->deleteThis();
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyAttribute()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "%type% (") && !_settings->library.isNotLibraryFunction(tok)) {
|
|
if (_settings->library.functionpure.find(tok->str()) != _settings->library.functionpure.end())
|
|
tok->isAttributePure(true);
|
|
if (_settings->library.functionconst.find(tok->str()) != _settings->library.functionconst.end())
|
|
tok->isAttributeConst(true);
|
|
}
|
|
while (Token::Match(tok, "__attribute__|__attribute (") && tok->next()->link() && tok->next()->link()->next()) {
|
|
if (Token::Match(tok->tokAt(2), "( constructor|__constructor__")) {
|
|
// prototype for constructor is: void func(void);
|
|
if (!tok->next()->link()->next())
|
|
syntaxError(tok);
|
|
|
|
if (tok->next()->link()->next()->str() == "void") { // __attribute__((constructor)) void func() {}
|
|
if (!tok->next()->link()->next()->next())
|
|
syntaxError(tok);
|
|
|
|
tok->next()->link()->next()->next()->isAttributeConstructor(true);
|
|
} else if (tok->next()->link()->next()->str() == ";" && tok->linkAt(-1) && tok->previous()->link()->previous()) // void func() __attribute__((constructor));
|
|
tok->previous()->link()->previous()->isAttributeConstructor(true);
|
|
else // void __attribute__((constructor)) func() {}
|
|
tok->next()->link()->next()->isAttributeConstructor(true);
|
|
}
|
|
|
|
else if (Token::Match(tok->tokAt(2), "( destructor|__destructor__")) {
|
|
// prototype for destructor is: void func(void);
|
|
if (!tok->next()->link()->next())
|
|
syntaxError(tok);
|
|
|
|
if (tok->next()->link()->next()->str() == "void") // __attribute__((destructor)) void func() {}
|
|
tok->next()->link()->next()->next()->isAttributeDestructor(true);
|
|
else if (tok->next()->link()->next()->str() == ";" && tok->linkAt(-1) && tok->previous()->link()->previous()) // void func() __attribute__((destructor));
|
|
tok->previous()->link()->previous()->isAttributeDestructor(true);
|
|
else // void __attribute__((destructor)) func() {}
|
|
tok->next()->link()->next()->isAttributeDestructor(true);
|
|
}
|
|
|
|
else if (Token::Match(tok->tokAt(2), "( unused|__unused__|used|__used__ )")) {
|
|
Token *vartok = nullptr;
|
|
|
|
// check if after variable name
|
|
if (Token::Match(tok->next()->link()->next(), ";|=")) {
|
|
if (Token::Match(tok->previous(), "%type%"))
|
|
vartok = tok->previous();
|
|
}
|
|
|
|
// check if before variable name
|
|
else if (Token::Match(tok->next()->link()->next(), "%type%"))
|
|
vartok = tok->next()->link()->next();
|
|
|
|
if (vartok) {
|
|
const std::string &attribute(tok->strAt(3));
|
|
if (attribute.find("unused") != std::string::npos)
|
|
vartok->isAttributeUnused(true);
|
|
else
|
|
vartok->isAttributeUsed(true);
|
|
}
|
|
}
|
|
|
|
else if (Token::Match(tok->tokAt(2), "( pure|__pure__|const|__const__|noreturn|__noreturn__|nothrow|__nothrow__ )")) {
|
|
Token *functok = nullptr;
|
|
|
|
// type func(...) __attribute__((attribute));
|
|
if (tok->previous() && tok->previous()->link() && Token::Match(tok->previous()->link()->previous(), "%name% ("))
|
|
functok = tok->previous()->link()->previous();
|
|
|
|
// type __attribute__((attribute)) func() { }
|
|
else {
|
|
Token *tok2 = tok->next()->link();
|
|
while (Token::Match(tok2, ") __attribute__|__attribute ("))
|
|
tok2 = tok2->linkAt(2);
|
|
if (Token::Match(tok2, ") %name% ("))
|
|
functok = tok2->next();
|
|
}
|
|
|
|
if (functok) {
|
|
const std::string &attribute(tok->strAt(3));
|
|
if (attribute.find("pure") != std::string::npos)
|
|
functok->isAttributePure(true);
|
|
else if (attribute.find("const") != std::string::npos)
|
|
functok->isAttributeConst(true);
|
|
else if (attribute.find("noreturn") != std::string::npos)
|
|
functok->isAttributeNoreturn(true);
|
|
else if (attribute.find("nothrow") != std::string::npos)
|
|
functok->isAttributeNothrow(true);
|
|
}
|
|
}
|
|
|
|
Token::eraseTokens(tok, tok->next()->link()->next());
|
|
tok->deleteThis();
|
|
}
|
|
}
|
|
}
|
|
|
|
namespace {
|
|
const std::set<std::string> keywords = make_container< std::set<std::string> >()
|
|
<< "volatile"
|
|
<< "inline"
|
|
<< "_inline"
|
|
<< "__inline"
|
|
<< "__forceinline"
|
|
<< "register"
|
|
<< "__restrict"
|
|
<< "__restrict__" ;
|
|
}
|
|
// Remove "volatile", "inline", "register", "restrict", "override", "final", "static" and "constexpr"
|
|
// "restrict" keyword
|
|
// - New to 1999 ANSI/ISO C standard
|
|
// - Not in C++ standard yet
|
|
void Tokenizer::simplifyKeyword()
|
|
{
|
|
|
|
// FIXME: There is a risk that "keywords" are removed by mistake. This
|
|
// code should be fixed so it doesn't remove variables etc. Nonstandard
|
|
// keywords should be defined with a library instead. For instance the
|
|
// linux kernel code at least uses "_inline" as struct member name at some
|
|
// places.
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (keywords.find(tok->str()) == keywords.end())
|
|
continue;
|
|
|
|
// Don't remove struct members
|
|
if (Token::simpleMatch(tok->previous(), "."))
|
|
continue;
|
|
|
|
// Simplify..
|
|
tok->deleteThis();
|
|
}
|
|
|
|
if (isC() || _settings->standards.cpp == Standards::CPP03) {
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->str() == "auto")
|
|
tok->deleteThis();
|
|
}
|
|
}
|
|
|
|
if (_settings->standards.c >= Standards::C99) {
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
while (tok->str() == "restrict") {
|
|
tok->deleteThis();
|
|
}
|
|
|
|
// simplify static keyword:
|
|
// void foo( int [ static 5 ] ); ==> void foo( int [ 5 ] );
|
|
if (Token::Match(tok, "[ static %num%")) {
|
|
tok->deleteNext();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (_settings->standards.c >= Standards::C11) {
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
while (tok->str() == "_Atomic") {
|
|
tok->deleteThis();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (isCPP() && _settings->standards.cpp >= Standards::CPP11) {
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
while (tok->str() == "constexpr") {
|
|
tok->deleteThis();
|
|
}
|
|
|
|
// final:
|
|
// 1) struct name final { }; <- struct is final
|
|
if (Token::Match(tok, "%type% final [:{]")) {
|
|
tok->deleteNext();
|
|
continue;
|
|
}
|
|
// final:
|
|
// 2) void f() final; <- function is final
|
|
if (Token::Match(tok, ") const|override|final")) {
|
|
Token* specifier = tok->tokAt(2);
|
|
while (specifier && Token::Match(specifier, "const|override|final")) {
|
|
specifier=specifier->next();
|
|
}
|
|
if (specifier && Token::Match(specifier, "[{;]")) {
|
|
specifier = tok->next();
|
|
while (!Token::Match(specifier, "[{;]")) {
|
|
if (specifier->str()=="final")
|
|
specifier->deleteThis();
|
|
else
|
|
specifier=specifier->next();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyAssignmentInFunctionCall()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->str() == "(")
|
|
tok = tok->link();
|
|
|
|
// Find 'foo(var='. Exclude 'assert(var=' to allow tests to check that assert(...) does not contain side-effects
|
|
else if (Token::Match(tok, "[;{}] %name% ( %name% =") &&
|
|
Token::simpleMatch(tok->linkAt(2), ") ;") &&
|
|
!Token::Match(tok->next(), "assert|while")) {
|
|
const std::string& funcname(tok->next()->str());
|
|
Token* const vartok = tok->tokAt(3);
|
|
|
|
// Goto ',' or ')'..
|
|
for (Token *tok2 = vartok->tokAt(2); tok2; tok2 = tok2->next()) {
|
|
if (tok2->link() && Token::Match(tok2, "(|[|{"))
|
|
tok2 = tok2->link();
|
|
else if (tok2->str() == ";")
|
|
break;
|
|
else if (Token::Match(tok2, ")|,")) {
|
|
tok2 = tok2->previous();
|
|
|
|
tok2->insertToken(vartok->str());
|
|
tok2->next()->varId(vartok->varId());
|
|
|
|
tok2->insertToken("(");
|
|
Token::createMutualLinks(tok2->next(), tok->linkAt(2));
|
|
|
|
tok2->insertToken(funcname);
|
|
tok2->insertToken(";");
|
|
|
|
Token::eraseTokens(tok, vartok);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyAssignmentBlock()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "[;{}] %name% = ( {")) {
|
|
const std::string &varname = tok->next()->str();
|
|
|
|
// goto the "} )"
|
|
unsigned int indentlevel = 0;
|
|
Token *tok2 = tok;
|
|
while (nullptr != (tok2 = tok2->next())) {
|
|
if (Token::Match(tok2, "(|{"))
|
|
++indentlevel;
|
|
else if (Token::Match(tok2, ")|}")) {
|
|
if (indentlevel <= 2)
|
|
break;
|
|
--indentlevel;
|
|
} else if (indentlevel == 2 && tok2->str() == varname && Token::Match(tok2->previous(), "%type%|*"))
|
|
// declaring variable in inner scope with same name as lhs variable
|
|
break;
|
|
}
|
|
if (indentlevel == 2 && Token::simpleMatch(tok2, "} )")) {
|
|
tok2 = tok2->tokAt(-3);
|
|
if (Token::Match(tok2, "[;{}] %num%|%name% ;")) {
|
|
tok2->insertToken("=");
|
|
tok2->insertToken(tok->next()->str());
|
|
tok2->next()->varId(tok->next()->varId());
|
|
tok->deleteNext(3);
|
|
tok2->tokAt(5)->deleteNext();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Remove __asm..
|
|
void Tokenizer::simplifyAsm()
|
|
{
|
|
std::string instruction;
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "__asm|_asm|asm {") &&
|
|
tok->next()->link()->next()) {
|
|
instruction = tok->tokAt(2)->stringifyList(tok->next()->link());
|
|
Token::eraseTokens(tok, tok->next()->link()->next());
|
|
}
|
|
|
|
else if (Token::Match(tok, "asm|__asm|__asm__ volatile|__volatile|__volatile__| (")) {
|
|
// Goto "("
|
|
Token *partok = tok->next();
|
|
if (partok->str() != "(")
|
|
partok = partok->next();
|
|
instruction = partok->next()->stringifyList(partok->link());
|
|
Token::eraseTokens(tok, partok->link()->next());
|
|
}
|
|
|
|
else if (Token::Match(tok, "_asm|__asm")) {
|
|
const Token *tok2 = tok;
|
|
while (tok2 && (tok2->isNumber() || tok2->isName() || tok2->str() == "," || tok2->str() == ":"))
|
|
tok2 = tok2->next();
|
|
if (!tok2 || tok2->str() == ";" || tok2->linenr() != tok->linenr()) {
|
|
instruction = tok->next()->stringifyList(tok2);
|
|
Token::eraseTokens(tok, tok2);
|
|
if (!tok2 || tok2->str() != ";")
|
|
tok->insertToken(";");
|
|
} else
|
|
continue;
|
|
}
|
|
|
|
else
|
|
continue;
|
|
|
|
// insert "asm ( "instruction" )"
|
|
tok->str("asm");
|
|
if (tok->strAt(1) != ";" && tok->strAt(1) != "{")
|
|
tok->insertToken(";");
|
|
tok->insertToken(")");
|
|
tok->insertToken("\"" + instruction + "\"");
|
|
tok->insertToken("(");
|
|
|
|
tok = tok->next();
|
|
Token::createMutualLinks(tok, tok->tokAt(2));
|
|
|
|
//move the new tokens in the same line as ";" if available
|
|
tok = tok->tokAt(2);
|
|
if (tok->next() && tok->next()->str() == ";" &&
|
|
tok->next()->linenr() != tok->linenr()) {
|
|
const unsigned int endposition = tok->next()->linenr();
|
|
tok = tok->tokAt(-3);
|
|
for (int i = 0; i < 4; ++i) {
|
|
tok = tok->next();
|
|
tok->linenr(endposition);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyAsm2()
|
|
{
|
|
// Block declarations: ^{}
|
|
// A C extension used to create lambda like closures.
|
|
|
|
// Put ^{} statements in asm()
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->str() != "^")
|
|
continue;
|
|
|
|
if (Token::simpleMatch(tok, "^ {") || Token::simpleMatch(tok->linkAt(1), ") {")) {
|
|
Token * start = tok;
|
|
while (start && !Token::Match(start, "[,(;{}=]")) {
|
|
if (start->link() && Token::Match(start, ")|]|>"))
|
|
start = start->link();
|
|
start = start->previous();
|
|
}
|
|
|
|
const Token *last = tok->next()->link();
|
|
if (Token::simpleMatch(last, ") {"))
|
|
last = last->linkAt(1);
|
|
last = last->next();
|
|
while (last && !Token::Match(last, "%cop%|,|;|{|}|)")) {
|
|
if (Token::Match(last, "(|["))
|
|
last = last->link();
|
|
last = last->next();
|
|
}
|
|
|
|
if (start && last) {
|
|
std::string asmcode;
|
|
while (start->next() != last) {
|
|
asmcode += start->next()->str();
|
|
start->deleteNext();
|
|
}
|
|
if (last->str() == "}")
|
|
start->insertToken(";");
|
|
start->insertToken(")");
|
|
start->insertToken("\"" + asmcode + "\"");
|
|
start->insertToken("(");
|
|
start->insertToken("asm");
|
|
start->tokAt(2)->link(start->tokAt(4));
|
|
start->tokAt(4)->link(start->tokAt(2));
|
|
tok = start->tokAt(4);
|
|
}
|
|
}
|
|
}
|
|
|
|
// When the assembly code has been cleaned up, no @ is allowed
|
|
for (const Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->str() == "(") {
|
|
tok = tok->link();
|
|
if (!tok)
|
|
syntaxError(nullptr);
|
|
} else if (tok->str()[0] == '@') {
|
|
syntaxError(nullptr);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Simplify bitfields
|
|
void Tokenizer::simplifyBitfields()
|
|
{
|
|
bool goback = false;
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
|
|
if (goback) {
|
|
goback = false;
|
|
tok = tok->previous();
|
|
}
|
|
Token *last = nullptr;
|
|
|
|
if (Token::Match(tok, ";|{|}|public:|protected:|private: const| %type% %name% :") &&
|
|
!Token::Match(tok->next(), "case|public|protected|private|class|struct") &&
|
|
!Token::simpleMatch(tok->tokAt(2), "default :")) {
|
|
Token *tok1 = (tok->next()->str() == "const") ? tok->tokAt(3) : tok->tokAt(2);
|
|
if (tok1 && tok1->tokAt(2) &&
|
|
(Token::Match(tok1->tokAt(2), "%bool%|%num%") ||
|
|
!Token::Match(tok1->tokAt(2), "public|protected|private| %type% ::|<|,|{|;"))) {
|
|
while (tok1->next() && !Token::Match(tok1->next(), "[;,)]{}]")) {
|
|
if (Token::Match(tok1->next(), "[([]"))
|
|
Token::eraseTokens(tok1, tok1->next()->link());
|
|
tok1->deleteNext();
|
|
}
|
|
|
|
last = tok1->next();
|
|
}
|
|
} else if (Token::Match(tok, ";|{|}|public:|protected:|private: const| %type% : %any% ;") &&
|
|
tok->next()->str() != "default") {
|
|
const int offset = (tok->next()->str() == "const") ? 1 : 0;
|
|
|
|
if (!Token::Match(tok->tokAt(3 + offset), "[{};()]")) {
|
|
tok->deleteNext(4 + offset);
|
|
goback = true;
|
|
}
|
|
}
|
|
|
|
if (last && last->str() == ",") {
|
|
Token *tok1 = last;
|
|
tok1->str(";");
|
|
|
|
Token *tok2 = tok->next();
|
|
tok1->insertToken(tok2->str());
|
|
tok1 = tok1->next();
|
|
tok1->isSigned(tok2->isSigned());
|
|
tok1->isUnsigned(tok2->isUnsigned());
|
|
tok1->isLong(tok2->isLong());
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
namespace {
|
|
// Types and objects in std namespace that are neither functions nor templates
|
|
const std::set<std::string> stdTypes = make_container<std::set<std::string> >() <<
|
|
"string"<< "wstring"<< "u16string"<< "u32string" <<
|
|
"iostream"<< "ostream"<< "ofstream"<< "ostringstream" <<
|
|
"istream"<< "ifstream"<< "istringstream"<< "fstream"<< "stringstream" <<
|
|
"wstringstream"<< "wistringstream"<< "wostringstream"<< "wstringbuf" <<
|
|
"stringbuf"<< "streambuf"<< "ios"<< "filebuf"<< "ios_base" <<
|
|
"exception"<< "bad_exception"<< "bad_alloc" <<
|
|
"logic_error"<< "domain_error"<< "invalid_argument_"<< "length_error" <<
|
|
"out_of_range"<< "runtime_error"<< "range_error"<< "overflow_error"<< "underflow_error" <<
|
|
"locale" <<
|
|
"cout"<< "cerr"<< "clog"<< "cin" <<
|
|
"wcerr"<< "wcin"<< "wclog"<< "wcout" <<
|
|
"endl"<< "ends"<< "flush" <<
|
|
"boolalpha"<< "noboolalpha"<< "showbase"<< "noshowbase" <<
|
|
"showpoint"<< "noshowpoint"<< "showpos"<< "noshowpos" <<
|
|
"skipws"<< "noskipws"<< "unitbuf"<< "nounitbuf"<< "uppercase"<< "nouppercase" <<
|
|
"dec"<< "hex"<< "oct" <<
|
|
"fixed"<< "scientific" <<
|
|
"internal"<< "left"<< "right" <<
|
|
"fpos"<< "streamoff"<< "streampos"<< "streamsize";
|
|
|
|
const std::set<std::string> stdTemplates = make_container<std::set<std::string> >() <<
|
|
"array"<< "basic_string"<< "bitset"<< "deque"<< "list"<< "map"<< "multimap" <<
|
|
"priority_queue"<< "queue"<< "set"<< "multiset"<< "stack"<< "vector"<< "pair" <<
|
|
"iterator"<< "iterator_traits" <<
|
|
"unordered_map"<< "unordered_multimap"<< "unordered_set"<< "unordered_multiset" <<
|
|
"tuple"<< "function";
|
|
const std::set<std::string> stdFunctions = make_container<std::set<std::string> >() <<
|
|
"getline" <<
|
|
"for_each"<< "find"<< "find_if"<< "find_end"<< "find_first_of" <<
|
|
"adjacent_find"<< "count"<< "count_if"<< "mismatch"<< "equal"<< "search"<< "search_n" <<
|
|
"copy"<< "copy_backward"<< "swap"<< "swap_ranges"<< "iter_swap"<< "transform"<< "replace" <<
|
|
"replace_if"<< "replace_copy"<< "replace_copy_if"<< "fill"<< "fill_n"<< "generate"<< "generate_n"<< "remove" <<
|
|
"remove_if"<< "remove_copy"<< "remove_copy_if" <<
|
|
"unique"<< "unique_copy"<< "reverse"<< "reverse_copy" <<
|
|
"rotate"<< "rotate_copy"<< "random_shuffle"<< "partition"<< "stable_partition" <<
|
|
"sort"<< "stable_sort"<< "partial_sort"<< "partial_sort_copy"<< "nth_element" <<
|
|
"lower_bound"<< "upper_bound"<< "equal_range"<< "binary_search"<< "merge"<< "inplace_merge"<< "includes" <<
|
|
"set_union"<< "set_intersection"<< "set_difference" <<
|
|
"set_symmetric_difference"<< "push_heap"<< "pop_heap"<< "make_heap"<< "sort_heap" <<
|
|
"min"<< "max"<< "min_element"<< "max_element"<< "lexicographical_compare"<< "next_permutation"<< "prev_permutation" <<
|
|
"advance"<< "back_inserter"<< "distance"<< "front_inserter"<< "inserter" <<
|
|
"make_pair"<< "make_shared"<< "make_tuple";
|
|
}
|
|
|
|
|
|
// Add std:: in front of std classes, when using namespace std; was given
|
|
void Tokenizer::simplifyNamespaceStd()
|
|
{
|
|
if (!isCPP())
|
|
return;
|
|
|
|
const bool isCPP11 = _settings->standards.cpp == Standards::CPP11;
|
|
|
|
for (const Token* tok = Token::findsimplematch(list.front(), "using namespace std ;"); tok; tok = tok->next()) {
|
|
bool insert = false;
|
|
if (!Token::Match(tok->previous(), ".|::")) {
|
|
if (Token::Match(tok, "%name% (") && !Token::Match(tok->linkAt(1)->next(), "%name%|{") && stdFunctions.find(tok->str()) != stdFunctions.end())
|
|
insert = true;
|
|
else if (Token::Match(tok, "%name% <") && stdTemplates.find(tok->str()) != stdTemplates.end())
|
|
insert = true;
|
|
else if (tok->isName() && !tok->varId() && !Token::Match(tok->next(), "(|<") && stdTypes.find(tok->str()) != stdTypes.end())
|
|
insert = true;
|
|
}
|
|
|
|
if (insert) {
|
|
tok->previous()->insertToken("std");
|
|
tok->previous()->linenr(tok->linenr()); // For stylistic reasons we put the std:: in the same line as the following token
|
|
tok->previous()->fileIndex(tok->fileIndex());
|
|
tok->previous()->insertToken("::");
|
|
} else if (isCPP11 && Token::Match(tok, "!!:: tr1 ::"))
|
|
tok->next()->str("std");
|
|
}
|
|
|
|
for (Token* tok = list.front(); tok; tok = tok->next()) {
|
|
if (isCPP11 && Token::simpleMatch(tok, "std :: tr1 ::"))
|
|
Token::eraseTokens(tok, tok->tokAt(3));
|
|
|
|
else if (Token::simpleMatch(tok, "using namespace std ;")) {
|
|
Token::eraseTokens(tok, tok->tokAt(4));
|
|
tok->deleteThis();
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void Tokenizer::simplifyMicrosoftMemoryFunctions()
|
|
{
|
|
// skip if not Windows
|
|
if (!_settings->isWindowsPlatform())
|
|
return;
|
|
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "CopyMemory|RtlCopyMemory|RtlCopyBytes (")) {
|
|
tok->str("memcpy");
|
|
} else if (Token::Match(tok, "MoveMemory|RtlMoveMemory (")) {
|
|
tok->str("memmove");
|
|
} else if (Token::Match(tok, "FillMemory|RtlFillMemory|RtlFillBytes (")) {
|
|
// FillMemory(dst, len, val) -> memset(dst, val, len)
|
|
tok->str("memset");
|
|
|
|
Token *tok1 = tok->tokAt(2);
|
|
if (tok1)
|
|
tok1 = tok1->nextArgument(); // Second argument
|
|
if (tok1) {
|
|
Token *tok2 = tok1->nextArgument(); // Third argument
|
|
|
|
if (tok2)
|
|
Token::move(tok1->previous(), tok2->tokAt(-2), tok->next()->link()->previous()); // Swap third with second argument
|
|
}
|
|
} else if (Token::Match(tok, "ZeroMemory|RtlZeroMemory|RtlZeroBytes|RtlSecureZeroMemory (")) {
|
|
// ZeroMemory(dst, len) -> memset(dst, 0, len)
|
|
tok->str("memset");
|
|
|
|
Token *tok1 = tok->tokAt(2);
|
|
if (tok1)
|
|
tok1 = tok1->nextArgument(); // Second argument
|
|
|
|
if (tok1) {
|
|
tok1 = tok1->previous();
|
|
tok1->insertToken("0");
|
|
tok1 = tok1->next();
|
|
tok1->insertToken(",");
|
|
}
|
|
} else if (Token::simpleMatch(tok, "RtlCompareMemory (")) {
|
|
// RtlCompareMemory(src1, src2, len) -> memcmp(src1, src2, len)
|
|
tok->str("memcmp");
|
|
// For the record, when memcmp returns 0, both strings are equal.
|
|
// When RtlCompareMemory returns len, both strings are equal.
|
|
// It might be needed to improve this replacement by something
|
|
// like ((len - memcmp(src1, src2, len)) % (len + 1)) to
|
|
// respect execution path (if required)
|
|
}
|
|
}
|
|
}
|
|
|
|
namespace {
|
|
struct triplet {
|
|
triplet(const char* t, const char* m, const char* u) : tchar(t), mbcs(m), unicode(u) {}
|
|
explicit triplet(const std::string& t) : tchar(t) {}
|
|
bool operator <(const triplet& rhs) const {
|
|
return tchar < rhs.tchar;
|
|
}
|
|
std::string tchar, mbcs, unicode;
|
|
};
|
|
|
|
const std::set<triplet> apis = make_container< std::set<triplet> >() <<
|
|
triplet("_topen", "open", "_wopen") <<
|
|
triplet("_tsopen_s", "_sopen_s", "_wsopen_s") <<
|
|
triplet("_tfopen", "fopen", "_wfopen") <<
|
|
triplet("_tfopen_s", "fopen_s", "_wfopen_s") <<
|
|
triplet("_tfreopen", "freopen", "_wfreopen") <<
|
|
triplet("_tfreopen_s", "freopen_s", "_wfreopen_s") <<
|
|
triplet("_tcscat", "strcat", "wcscat") <<
|
|
triplet("_tcschr", "strchr", "wcschr") <<
|
|
triplet("_tcscmp", "strcmp", "wcscmp") <<
|
|
triplet("_tcsdup", "strdup", "wcsdup") <<
|
|
triplet("_tcscpy", "strcpy", "wcscpy") <<
|
|
triplet("_tcslen", "strlen", "wcslen") <<
|
|
triplet("_tcsncat", "strncat", "wcsncat") <<
|
|
triplet("_tcsncpy", "strncpy", "wcsncpy") <<
|
|
triplet("_tcsnlen", "strnlen", "wcsnlen") <<
|
|
triplet("_tcsrchr", "strrchr", "wcsrchr") <<
|
|
triplet("_tcsstr", "strstr", "wcsstr") <<
|
|
triplet("_tcstok", "strtok", "wcstok") <<
|
|
triplet("_ftprintf", "fprintf", "fwprintf") <<
|
|
triplet("_tprintf", "printf", "wprintf") <<
|
|
triplet("_stprintf", "sprintf", "swprintf") <<
|
|
triplet("_sntprintf", "_snprintf", "_snwprintf") <<
|
|
triplet("_ftscanf", "fscanf", "fwscanf") <<
|
|
triplet("_tscanf", "scanf", "wscanf") <<
|
|
triplet("_stscanf", "sscanf", "swscanf") <<
|
|
triplet("_ftprintf_s", "fprintf_s", "fwprintf_s") <<
|
|
triplet("_tprintf_s", "printf_s", "wprintf_s") <<
|
|
triplet("_stprintf_s", "sprintf_s", "swprintf_s") <<
|
|
triplet("_sntprintf_s", "_snprintf_s", "_snwprintf_s") <<
|
|
triplet("_ftscanf_s", "fscanf_s", "fwscanf_s") <<
|
|
triplet("_tscanf_s", "scanf_s", "wscanf_s") <<
|
|
triplet("_stscanf_s", "sscanf_s", "swscanf_s")
|
|
;
|
|
}
|
|
|
|
void Tokenizer::simplifyMicrosoftStringFunctions()
|
|
{
|
|
// skip if not Windows
|
|
if (!_settings->isWindowsPlatform())
|
|
return;
|
|
|
|
const bool ansi = _settings->platformType == Settings::Win32A;
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
std::set<triplet>::const_iterator match = apis.find(triplet(tok->str()));
|
|
if (match!=apis.end()) {
|
|
const std::string pattern(match->tchar + " (");
|
|
if (Token::simpleMatch(tok, pattern.c_str())) {
|
|
tok->str(ansi ? match->mbcs : match->unicode);
|
|
tok->originalName(match->tchar);
|
|
}
|
|
} else if (Token::Match(tok, "_T ( %char%|%str% )")) {
|
|
tok->deleteNext();
|
|
tok->deleteThis();
|
|
tok->deleteNext();
|
|
if (!ansi)
|
|
tok->isLong(true);
|
|
while (Token::Match(tok->next(), "_T ( %char%|%str% )")) {
|
|
tok->next()->deleteNext();
|
|
tok->next()->deleteThis();
|
|
tok->next()->deleteNext();
|
|
tok->concatStr(tok->next()->str());
|
|
tok->deleteNext();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Remove Borland code
|
|
void Tokenizer::simplifyBorland()
|
|
{
|
|
// skip if not Windows
|
|
if (!_settings->isWindowsPlatform())
|
|
return;
|
|
if (isC())
|
|
return;
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "( __closure * %name% )")) {
|
|
tok->deleteNext();
|
|
}
|
|
}
|
|
|
|
// I think that these classes are always declared at the outer scope
|
|
// I save some time by ignoring inner classes.
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->str() == "{" && !Token::Match(tok->tokAt(-2), "namespace %type%")) {
|
|
tok = tok->link();
|
|
if (!tok)
|
|
break;
|
|
} else if (Token::Match(tok, "class %name% :|{")) {
|
|
while (tok && tok->str() != "{" && tok->str() != ";")
|
|
tok = tok->next();
|
|
if (!tok)
|
|
break;
|
|
if (tok->str() == ";")
|
|
continue;
|
|
|
|
const Token* end = tok->link()->next();
|
|
for (Token *tok2 = tok->next(); tok2 != end; tok2 = tok2->next()) {
|
|
if (tok2->str() == "__property" &&
|
|
Token::Match(tok2->previous(), ";|{|}|protected:|public:|__published:")) {
|
|
while (tok2->next() && !Token::Match(tok2->next(), "{|;"))
|
|
tok2->deleteNext();
|
|
tok2->deleteThis();
|
|
if (tok2->str() == "{") {
|
|
Token::eraseTokens(tok2, tok2->link());
|
|
tok2->deleteNext();
|
|
tok2->deleteThis();
|
|
|
|
// insert "; __property ;"
|
|
tok2->previous()->insertToken(";");
|
|
tok2->previous()->insertToken("__property");
|
|
tok2->previous()->insertToken(";");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Remove Qt signals and slots
|
|
void Tokenizer::simplifyQtSignalsSlots()
|
|
{
|
|
if (isC())
|
|
return;
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
// check for emit which can be outside of class
|
|
if (Token::Match(tok, "emit|Q_EMIT %name% (") &&
|
|
Token::simpleMatch(tok->linkAt(2), ") ;")) {
|
|
tok->deleteThis();
|
|
} else if (!Token::Match(tok, "class %name% :"))
|
|
continue;
|
|
|
|
if (tok->previous() && tok->previous()->str() == "enum") {
|
|
tok = tok->tokAt(2);
|
|
continue;
|
|
}
|
|
|
|
// count { and } for tok2
|
|
unsigned int indentlevel = 0;
|
|
for (Token *tok2 = tok; tok2; tok2 = tok2->next()) {
|
|
if (tok2->str() == "{") {
|
|
++indentlevel;
|
|
if (indentlevel == 1)
|
|
tok = tok2;
|
|
else
|
|
tok2 = tok2->link();
|
|
} else if (tok2->str() == "}") {
|
|
if (indentlevel<2)
|
|
break;
|
|
else
|
|
--indentlevel;
|
|
}
|
|
|
|
if (tok2->strAt(1) == "Q_OBJECT") {
|
|
tok2->deleteNext();
|
|
} else if (Token::Match(tok2->next(), "public|protected|private slots|Q_SLOTS :")) {
|
|
tok2 = tok2->next();
|
|
tok2->str(tok2->str() + ":");
|
|
tok2->deleteNext(2);
|
|
tok2 = tok2->previous();
|
|
} else if (Token::Match(tok2->next(), "signals|Q_SIGNALS :")) {
|
|
tok2 = tok2->next();
|
|
tok2->str("protected:");
|
|
tok2->deleteNext();
|
|
} else if (Token::Match(tok2->next(), "emit|Q_EMIT %name% (") &&
|
|
Token::simpleMatch(tok2->linkAt(3), ") ;")) {
|
|
tok2->deleteNext();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::createSymbolDatabase()
|
|
{
|
|
if (!_symbolDatabase)
|
|
_symbolDatabase = new SymbolDatabase(this, _settings, _errorLogger);
|
|
_symbolDatabase->validate();
|
|
}
|
|
|
|
void Tokenizer::deleteSymbolDatabase()
|
|
{
|
|
delete _symbolDatabase;
|
|
_symbolDatabase = nullptr;
|
|
}
|
|
|
|
static bool operatorEnd(const Token * tok)
|
|
{
|
|
if (tok && tok->str() == ")") {
|
|
tok = tok->next();
|
|
while (tok && !Token::Match(tok, "[=;{),]")) {
|
|
if (Token::Match(tok, "const|volatile")) {
|
|
tok = tok->next();
|
|
} else if (tok->str() == "noexcept") {
|
|
tok = tok->next();
|
|
if (tok && tok->str() == "(") {
|
|
tok = tok->link()->next();
|
|
}
|
|
} else if (tok->str() == "throw" && tok->next() && tok->next()->str() == "(") {
|
|
tok = tok->next()->link()->next();
|
|
}
|
|
// unknown macros ") MACRO {" and ") MACRO(...) {"
|
|
else if (tok->isUpperCaseName()) {
|
|
tok = tok->next();
|
|
if (tok && tok->str() == "(") {
|
|
tok = tok->link()->next();
|
|
}
|
|
} else
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void Tokenizer::simplifyOperatorName()
|
|
{
|
|
if (isC())
|
|
return;
|
|
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->str() == "operator") {
|
|
// operator op
|
|
std::string op;
|
|
Token *par = tok->next();
|
|
bool done = false;
|
|
while (!done && par) {
|
|
done = true;
|
|
if (par && par->isName()) {
|
|
op += par->str();
|
|
par = par->next();
|
|
// merge namespaces eg. 'operator std :: string () const {'
|
|
if (Token::Match(par, ":: %name%|%op%|.")) {
|
|
op += par->str();
|
|
par = par->next();
|
|
}
|
|
done = false;
|
|
}
|
|
if (Token::Match(par, ".|%op%|,")) {
|
|
op += par->str();
|
|
par = par->next();
|
|
done = false;
|
|
}
|
|
if (Token::simpleMatch(par, "[ ]")) {
|
|
op += "[]";
|
|
par = par->tokAt(2);
|
|
done = false;
|
|
}
|
|
if (Token::Match(par, "( *| )")) {
|
|
// break out and simplify..
|
|
if (operatorEnd(par->next()))
|
|
break;
|
|
|
|
while (par->str() != ")") {
|
|
op += par->str();
|
|
par = par->next();
|
|
}
|
|
op += ")";
|
|
par = par->next();
|
|
done = false;
|
|
}
|
|
}
|
|
|
|
if (par && operatorEnd(par->link())) {
|
|
tok->str("operator" + op);
|
|
Token::eraseTokens(tok, par);
|
|
}
|
|
|
|
if (!op.empty())
|
|
tok->isOperatorKeyword(true);
|
|
}
|
|
}
|
|
|
|
if (_settings->debugwarnings) {
|
|
const Token *tok = list.front();
|
|
|
|
while ((tok = Token::findsimplematch(tok, "operator")) != nullptr) {
|
|
reportError(tok, Severity::debug, "debug",
|
|
"simplifyOperatorName: found unsimplified operator name");
|
|
tok = tok->next();
|
|
}
|
|
}
|
|
}
|
|
|
|
// remove unnecessary member qualification..
|
|
void Tokenizer::removeUnnecessaryQualification()
|
|
{
|
|
if (isC())
|
|
return;
|
|
|
|
std::vector<Space> classInfo;
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "class|struct|namespace %type% :|{") &&
|
|
(!tok->previous() || tok->previous()->str() != "enum")) {
|
|
Space info;
|
|
info.isNamespace = tok->str() == "namespace";
|
|
tok = tok->next();
|
|
info.className = tok->str();
|
|
tok = tok->next();
|
|
while (tok && tok->str() != "{")
|
|
tok = tok->next();
|
|
if (!tok)
|
|
return;
|
|
info.classEnd = tok->link();
|
|
classInfo.push_back(info);
|
|
} else if (!classInfo.empty()) {
|
|
if (tok == classInfo.back().classEnd)
|
|
classInfo.pop_back();
|
|
else if (tok->str() == classInfo.back().className &&
|
|
!classInfo.back().isNamespace && tok->previous()->str() != ":" &&
|
|
(Token::Match(tok, "%type% :: ~| %type% (") ||
|
|
Token::Match(tok, "%type% :: operator"))) {
|
|
const Token *tok1 = tok->tokAt(3);
|
|
if (tok->strAt(2) == "operator") {
|
|
// check for operator ()
|
|
if (tok1->str() == "(")
|
|
tok1 = tok1->next();
|
|
|
|
while (tok1 && tok1->str() != "(") {
|
|
if (tok1->str() == ";")
|
|
break;
|
|
tok1 = tok1->next();
|
|
}
|
|
if (!tok1 || tok1->str() != "(")
|
|
continue;
|
|
} else if (tok->strAt(2) == "~")
|
|
tok1 = tok1->next();
|
|
|
|
if (!tok1 || !Token::Match(tok1->link(), ") const| {|;|:")) {
|
|
continue;
|
|
}
|
|
|
|
const bool isConstructorOrDestructor =
|
|
Token::Match(tok, "%type% :: ~| %type%") && (tok->strAt(2) == tok->str() || (tok->strAt(2) == "~" && tok->strAt(3) == tok->str()));
|
|
if (!isConstructorOrDestructor) {
|
|
bool isPrependedByType = Token::Match(tok->previous(), "%type%");
|
|
if (!isPrependedByType) {
|
|
const Token* tok2 = tok->tokAt(-2);
|
|
isPrependedByType = Token::Match(tok2, "%type% *|&");
|
|
}
|
|
if (!isPrependedByType) {
|
|
const Token* tok3 = tok->tokAt(-3);
|
|
isPrependedByType = Token::Match(tok3, "%type% * *|&");
|
|
}
|
|
if (!isPrependedByType) {
|
|
// It's not a constructor declaration and it's not a function declaration so
|
|
// this is a function call which can have all the qualifiers just fine - skip.
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyDeprecated()
|
|
{
|
|
if (_settings->standards.cpp != Standards::CPP11 || isC())
|
|
return; // It is actually a C++14 feature, however, there seems to be nothing dangerous about removing it for C++11 as well
|
|
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->link() && Token::simpleMatch(tok, "[ [ deprecated")) {
|
|
Token::eraseTokens(tok, tok->link()->next());
|
|
tok->deleteThis();
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyReturnStrncat()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::simpleMatch(tok, "return strncat (") &&
|
|
Token::simpleMatch(tok->linkAt(2), ") ;") &&
|
|
tok->strAt(3) != ")" && tok->strAt(3) != ",") {
|
|
|
|
//first argument
|
|
Token *tok2 = tok->tokAt(3);
|
|
|
|
//check if there are at least three arguments
|
|
for (unsigned char i = 0; i < 2; ++i) {
|
|
tok2 = tok2->nextArgument();
|
|
if (!tok2) {
|
|
tok = tok->linkAt(2)->next();
|
|
break;
|
|
}
|
|
}
|
|
if (!tok2)
|
|
continue;
|
|
|
|
tok2 = tok2->nextArgument();
|
|
//we want only three arguments
|
|
if (tok2) {
|
|
tok = tok->linkAt(2)->next();
|
|
continue;
|
|
}
|
|
|
|
// Remove 'return'
|
|
tok->deleteThis();
|
|
|
|
// Add 'return arg1 ;' after 'strncat(arg1, arg2, arg3);'
|
|
tok = tok->next();
|
|
|
|
tok2 = tok->link()->next();
|
|
tok2->insertToken(";");
|
|
|
|
//the last token of the first argument before ','
|
|
Token *end = tok->next()->nextArgument()->tokAt(-2);
|
|
|
|
//all the first argument is copied
|
|
copyTokens(tok2, tok->next(), end);
|
|
tok2->insertToken("return");
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::printUnknownTypes() const
|
|
{
|
|
if (!_symbolDatabase)
|
|
return;
|
|
|
|
std::multimap<std::string, const Token *> unknowns;
|
|
|
|
for (unsigned int i = 1; i <= _varId; ++i) {
|
|
const Variable *var = _symbolDatabase->getVariableFromVarId(i);
|
|
|
|
// is unknown type?
|
|
if (var && !var->type() && !var->typeStartToken()->isStandardType()) {
|
|
std::string name;
|
|
const Token * nameTok;
|
|
|
|
// single token type?
|
|
if (var->typeStartToken() == var->typeEndToken()) {
|
|
nameTok = var->typeStartToken();
|
|
name = nameTok->str();
|
|
}
|
|
|
|
// complicated type
|
|
else {
|
|
const Token *tok = var->typeStartToken();
|
|
int level = 0;
|
|
|
|
nameTok = tok;
|
|
|
|
while (tok) {
|
|
// skip pointer and reference part of type
|
|
if (level == 0 && Token::Match(tok, "*|&"))
|
|
break;
|
|
|
|
name += tok->str();
|
|
|
|
if (Token::Match(tok, "struct|union|enum"))
|
|
name += " ";
|
|
|
|
// pointers and references are OK in template
|
|
else if (tok->str() == "<")
|
|
++level;
|
|
else if (tok->str() == ">")
|
|
--level;
|
|
|
|
if (tok == var->typeEndToken())
|
|
break;
|
|
|
|
tok = tok->next();
|
|
}
|
|
}
|
|
|
|
unknowns.insert(std::pair<std::string, const Token *>(name, nameTok));
|
|
}
|
|
}
|
|
|
|
if (!unknowns.empty()) {
|
|
std::multimap<std::string, const Token *>::const_iterator it;
|
|
std::string last;
|
|
size_t count = 0;
|
|
|
|
for (it = unknowns.begin(); it != unknowns.end(); ++it) {
|
|
// skip types is std namespace because they are not interesting
|
|
if (it->first.find("std::") != 0) {
|
|
if (it->first != last) {
|
|
last = it->first;
|
|
count = 1;
|
|
reportError(it->second, Severity::debug, "debug", "Unknown type \'" + it->first + "\'.");
|
|
} else {
|
|
if (count < 3) // limit same type to 3
|
|
reportError(it->second, Severity::debug, "debug", "Unknown type \'" + it->first + "\'.");
|
|
count++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::simplifyMathExpressions()
|
|
{
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
|
|
//simplify Pythagorean trigonometric identity: pow(sin(x),2)+pow(cos(x),2) = 1
|
|
// pow(cos(x),2)+pow(sin(x),2) = 1
|
|
// @todo: sin(x) * sin(x) + cos(x) * cos(x) = 1
|
|
// cos(x) * cos(x) + sin(x) * sin(x) = 1
|
|
//simplify Hyperbolic identity: pow(sinh(x),2)-pow(cosh(x),2) = -1
|
|
// pow(cosh(x),2)-pow(sinh(x),2) = -1
|
|
// @todo: sinh(x) * sinh(x) - cosh(x) * cosh(x) = -1
|
|
// cosh(x) * cosh(x) - sinh(x) * sinh(x) = -1
|
|
if (Token::Match(tok, "pow|powf|powl (")) {
|
|
if (Token::Match(tok->tokAt(2), "sin|sinf|sinl (")) {
|
|
Token * const tok2 = tok->linkAt(3);
|
|
if (!Token::Match(tok2, ") , %num% ) + pow|powf|powl ( cos|cosf|cosl ("))
|
|
continue;
|
|
const std::string& leftExponent = tok2->strAt(2);
|
|
if (!isTwoNumber(leftExponent))
|
|
continue; // left exponent is not 2
|
|
Token * const tok3 = tok2->tokAt(8);
|
|
Token * const tok4 = tok3->link();
|
|
if (!Token::Match(tok4, ") , %num% )"))
|
|
continue;
|
|
const std::string& rightExponent = tok4->strAt(2);
|
|
if (!isTwoNumber(rightExponent))
|
|
continue; // right exponent is not 2
|
|
if (tok->tokAt(3)->stringifyList(tok2->next()) == tok3->stringifyList(tok4->next())) {
|
|
Token::eraseTokens(tok, tok4->tokAt(4));
|
|
tok->str("1");
|
|
}
|
|
} else if (Token::Match(tok->tokAt(2), "cos|cosf|cosl (")) {
|
|
Token * const tok2 = tok->linkAt(3);
|
|
if (!Token::Match(tok2, ") , %num% ) + pow|powf|powl ( sin|sinf|sinl ("))
|
|
continue;
|
|
const std::string& leftExponent = tok2->strAt(2);
|
|
if (!isTwoNumber(leftExponent))
|
|
continue; // left exponent is not 2
|
|
Token * const tok3 = tok2->tokAt(8);
|
|
Token * const tok4 = tok3->link();
|
|
if (!Token::Match(tok4, ") , %num% )"))
|
|
continue;
|
|
const std::string& rightExponent = tok4->strAt(2);
|
|
if (!isTwoNumber(rightExponent))
|
|
continue; // right exponent is not 2
|
|
if (tok->tokAt(3)->stringifyList(tok2->next()) == tok3->stringifyList(tok4->next())) {
|
|
Token::eraseTokens(tok, tok4->tokAt(4));
|
|
tok->str("1");
|
|
}
|
|
} else if (Token::Match(tok->tokAt(2), "sinh|sinhf|sinhl (")) {
|
|
Token * const tok2 = tok->linkAt(3);
|
|
if (!Token::Match(tok2, ") , %num% ) - pow|powf|powl ( cosh|coshf|coshl ("))
|
|
continue;
|
|
const std::string& leftExponent = tok2->strAt(2);
|
|
if (!isTwoNumber(leftExponent))
|
|
continue; // left exponent is not 2
|
|
Token * const tok3 = tok2->tokAt(8);
|
|
Token * const tok4 = tok3->link();
|
|
if (!Token::Match(tok4, ") , %num% )"))
|
|
continue;
|
|
const std::string& rightExponent = tok4->strAt(2);
|
|
if (!isTwoNumber(rightExponent))
|
|
continue; // right exponent is not 2
|
|
if (tok->tokAt(3)->stringifyList(tok2->next()) == tok3->stringifyList(tok4->next())) {
|
|
Token::eraseTokens(tok, tok4->tokAt(4));
|
|
tok->str("-1");
|
|
}
|
|
} else if (Token::Match(tok->tokAt(2), "cosh|coshf|coshl (")) {
|
|
Token * const tok2 = tok->linkAt(3);
|
|
if (!Token::Match(tok2, ") , %num% ) - pow|powf|powl ( sinh|sinhf|sinhl ("))
|
|
continue;
|
|
const std::string& leftExponent = tok2->strAt(2);
|
|
if (!isTwoNumber(leftExponent))
|
|
continue; // left exponent is not 2
|
|
Token * const tok3 = tok2->tokAt(8);
|
|
Token * const tok4 = tok3->link();
|
|
if (!Token::Match(tok4, ") , %num% )"))
|
|
continue;
|
|
const std::string& rightExponent = tok4->strAt(2);
|
|
if (!isTwoNumber(rightExponent))
|
|
continue; // right exponent is not 2
|
|
if (tok->tokAt(3)->stringifyList(tok2->next()) == tok3->stringifyList(tok4->next())) {
|
|
Token::eraseTokens(tok, tok4->tokAt(4));
|
|
tok->str("-1");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool Tokenizer::simplifyStrlen()
|
|
{
|
|
// replace strlen(str)
|
|
bool modified=false;
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "strlen ( %str% )")) {
|
|
tok->str(MathLib::toString(Token::getStrLength(tok->tokAt(2))));
|
|
tok->deleteNext(3);
|
|
modified=true;
|
|
}
|
|
}
|
|
return modified;
|
|
}
|
|
|
|
void Tokenizer::prepareTernaryOpForAST()
|
|
{
|
|
// http://en.cppreference.com/w/cpp/language/operator_precedence says about ternary operator:
|
|
// "The expression in the middle of the conditional operator (between ? and :) is parsed as if parenthesized: its precedence relative to ?: is ignored."
|
|
// The AST parser relies on this function to add such parentheses where necessary.
|
|
for (Token* tok = list.front(); tok; tok = tok->next()) {
|
|
if (tok->str() == "?") {
|
|
bool parenthesesNeeded = false;
|
|
unsigned int depth = 0;
|
|
Token* tok2 = tok->next();
|
|
for (; tok2; tok2 = tok2->next()) {
|
|
if (tok2->link() && Token::Match(tok2, "[|(|<"))
|
|
tok2 = tok2->link();
|
|
else if (tok2->str() == ":") {
|
|
if (depth == 0)
|
|
break;
|
|
depth--;
|
|
} else if (tok2->str() == ";" || (tok2->link() && tok2->str() != "{" && tok2->str() != "}"))
|
|
break;
|
|
else if (tok2->str() == ",")
|
|
parenthesesNeeded = true;
|
|
else if (tok2->str() == "?") {
|
|
depth++;
|
|
parenthesesNeeded = true;
|
|
}
|
|
}
|
|
if (parenthesesNeeded && tok2 && tok2->str() == ":") {
|
|
tok->insertToken("(");
|
|
tok2->insertToken(")", emptyString, true);
|
|
Token::createMutualLinks(tok->next(), tok2->previous());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::reportError(const Token* tok, const Severity::SeverityType severity, const std::string& id, const std::string& msg, bool inconclusive) const
|
|
{
|
|
const std::list<const Token*> callstack(1, tok);
|
|
reportError(callstack, severity, id, msg, inconclusive);
|
|
}
|
|
|
|
void Tokenizer::reportError(const std::list<const Token*>& callstack, Severity::SeverityType severity, const std::string& id, const std::string& msg, bool inconclusive) const
|
|
{
|
|
const ErrorLogger::ErrorMessage errmsg(callstack, &list, severity, id, msg, inconclusive);
|
|
if (_errorLogger)
|
|
_errorLogger->reportErr(errmsg);
|
|
else
|
|
Check::reportError(errmsg);
|
|
}
|
|
|
|
void Tokenizer::setPodTypes()
|
|
{
|
|
if (!_settings)
|
|
return;
|
|
for (Token *tok = list.front(); tok; tok = tok->next()) {
|
|
if (!tok->isName())
|
|
continue;
|
|
|
|
// pod type
|
|
const struct Library::PodType *podType = _settings->library.podtype(tok->str());
|
|
if (podType) {
|
|
const Token *prev = tok->previous();
|
|
while (prev && prev->isName())
|
|
prev = prev->previous();
|
|
if (prev && !Token::Match(prev, ";|{|}|,|("))
|
|
continue;
|
|
tok->isStandardType(true);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Tokenizer::SimplifyNamelessRValueReferences()
|
|
{
|
|
// Simplify nameless rValue references - named ones are simplified later
|
|
for (Token* tok = list.front(); tok; tok = tok->next()) {
|
|
if (Token::Match(tok, "&& [,)]")) {
|
|
tok->str("&");
|
|
tok->insertToken("&");
|
|
}
|
|
}
|
|
}
|