982 lines
32 KiB
C++
982 lines
32 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2014 Daniel Marjamäki and 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 "tokenlist.h"
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#include "token.h"
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#include "mathlib.h"
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#include "path.h"
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#include "preprocessor.h"
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#include "settings.h"
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#include "errorlogger.h"
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#include <cstring>
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#include <sstream>
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#include <cctype>
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#include <stack>
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#include <cassert>
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// How many compileExpression recursions are allowed?
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// For practical code this could be endless. But in some special torture test
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// there needs to be a limit.
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static const unsigned int AST_MAX_DEPTH = 50U;
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TokenList::TokenList(const Settings* settings) :
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_front(0),
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_back(0),
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_settings(settings),
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_isC(false),
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_isCPP(false)
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{
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}
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TokenList::~TokenList()
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{
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deallocateTokens();
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}
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//---------------------------------------------------------------------------
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const std::string& TokenList::getSourceFilePath() const
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{
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if (getFiles().empty()) {
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return emptyString;
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}
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return getFiles()[0];
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}
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//---------------------------------------------------------------------------
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// Deallocate lists..
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void TokenList::deallocateTokens()
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{
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deleteTokens(_front);
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_front = 0;
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_back = 0;
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_files.clear();
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}
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unsigned int TokenList::appendFileIfNew(const std::string &fileName)
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{
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// Has this file been tokenized already?
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for (std::size_t i = 0; i < _files.size(); ++i)
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if (Path::sameFileName(_files[i], fileName))
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return (unsigned int)i;
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// The "_files" vector remembers what files have been tokenized..
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_files.push_back(Path::simplifyPath(fileName));
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// Update _isC and _isCPP properties
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if (_files.size() == 1) { // Update only useful if first file added to _files
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if (!_settings) {
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_isC = Path::isC(getSourceFilePath());
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_isCPP = Path::isCPP(getSourceFilePath());
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} else {
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_isC = _settings->enforcedLang == Settings::C || (_settings->enforcedLang == Settings::None && Path::isC(getSourceFilePath()));
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_isCPP = _settings->enforcedLang == Settings::CPP || (_settings->enforcedLang == Settings::None && Path::isCPP(getSourceFilePath()));
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}
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}
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return static_cast<unsigned int>(_files.size() - 1);
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}
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void TokenList::deleteTokens(Token *tok)
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{
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while (tok) {
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Token *next = tok->next();
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delete tok;
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tok = next;
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}
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}
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//---------------------------------------------------------------------------
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// add a token.
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//---------------------------------------------------------------------------
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void TokenList::addtoken(const std::string & str, const unsigned int lineno, const unsigned int fileno, bool split)
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{
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if (str.empty())
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return;
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// If token contains # characters, split it up
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if (split) {
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size_t begin = 0;
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size_t end = 0;
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while ((end = str.find("##", begin)) != std::string::npos) {
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addtoken(str.substr(begin, end - begin), lineno, fileno, false);
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addtoken("##", lineno, fileno, false);
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begin = end+2;
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}
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if (begin != 0) {
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addtoken(str.substr(begin), lineno, fileno, false);
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return;
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}
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}
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// Replace hexadecimal value with decimal
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std::string str2;
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if (MathLib::isHex(str) || MathLib::isOct(str) || MathLib::isBin(str)) {
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std::ostringstream str2stream;
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str2stream << MathLib::toLongNumber(str);
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str2 = str2stream.str();
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} else if (str.compare(0, 5, "_Bool") == 0) {
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str2 = "bool";
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} else {
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str2 = str;
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}
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if (_back) {
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_back->insertToken(str2);
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} else {
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_front = new Token(&_back);
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_back = _front;
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_back->str(str2);
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}
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if (isCPP() && str == "delete")
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_back->isKeyword(true);
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_back->linenr(lineno);
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_back->fileIndex(fileno);
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}
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void TokenList::addtoken(const Token * tok, const unsigned int lineno, const unsigned int fileno)
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{
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if (tok == 0)
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return;
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if (_back) {
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_back->insertToken(tok->str(), tok->originalName());
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} else {
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_front = new Token(&_back);
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_back = _front;
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_back->str(tok->str());
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if (!tok->originalName().empty())
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_back->originalName(tok->originalName());
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}
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_back->linenr(lineno);
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_back->fileIndex(fileno);
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_back->flags(tok->flags());
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}
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//---------------------------------------------------------------------------
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// InsertTokens - Copy and insert tokens
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//---------------------------------------------------------------------------
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void TokenList::insertTokens(Token *dest, const Token *src, unsigned int n)
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{
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std::stack<Token *> link;
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while (n > 0) {
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dest->insertToken(src->str(), src->originalName());
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dest = dest->next();
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// Set links
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if (Token::Match(dest, "(|[|{"))
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link.push(dest);
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else if (!link.empty() && Token::Match(dest, ")|]|}")) {
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Token::createMutualLinks(dest, link.top());
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link.pop();
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}
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dest->fileIndex(src->fileIndex());
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dest->linenr(src->linenr());
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dest->varId(src->varId());
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dest->type(src->type());
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dest->flags(src->flags());
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src = src->next();
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--n;
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}
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}
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//---------------------------------------------------------------------------
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// Tokenize - tokenizes a given file.
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//---------------------------------------------------------------------------
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bool TokenList::createTokens(std::istream &code, const std::string& file0)
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{
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appendFileIfNew(file0);
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// line number in parsed code
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unsigned int lineno = 1;
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// The current token being parsed
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std::string CurrentToken;
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// lineNumbers holds line numbers for files in fileIndexes
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// every time an include file is completely parsed, last item in the vector
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// is removed and lineno is set to point to that value.
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std::stack<unsigned int> lineNumbers;
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// fileIndexes holds index for _files vector about currently parsed files
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// every time an include file is completely parsed, last item in the vector
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// is removed and FileIndex is set to point to that value.
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std::stack<unsigned int> fileIndexes;
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// FileIndex. What file in the _files vector is read now?
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unsigned int FileIndex = 0;
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bool expandedMacro = false;
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// Read one byte at a time from code and create tokens
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for (char ch = (char)code.get(); code.good() && ch; ch = (char)code.get()) {
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if (ch == Preprocessor::macroChar) {
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while (code.peek() == Preprocessor::macroChar)
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code.get();
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if (!CurrentToken.empty()) {
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addtoken(CurrentToken, lineno, FileIndex, true);
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_back->isExpandedMacro(expandedMacro);
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}
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CurrentToken.clear();
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expandedMacro = true;
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continue;
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}
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// char/string..
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// multiline strings are not handled. The preprocessor should handle that for us.
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else if (ch == '\'' || ch == '\"') {
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std::string line;
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// read char
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bool special = false;
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char c = ch;
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do {
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// Append token..
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line += c;
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// Special sequence '\.'
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if (special)
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special = false;
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else
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special = (c == '\\');
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// Get next character
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c = (char)code.get();
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} while (code.good() && (special || c != ch));
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line += ch;
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// Handle #file "file.h"
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if (CurrentToken == "#file") {
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// Extract the filename
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line = line.substr(1, line.length() - 2);
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++lineno;
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fileIndexes.push(FileIndex);
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FileIndex = appendFileIfNew(line);
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lineNumbers.push(lineno);
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lineno = 0;
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} else {
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// Add previous token
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addtoken(CurrentToken, lineno, FileIndex);
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if (!CurrentToken.empty())
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_back->isExpandedMacro(expandedMacro);
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// Add content of the string
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addtoken(line, lineno, FileIndex);
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if (!line.empty())
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_back->isExpandedMacro(expandedMacro);
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}
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CurrentToken.clear();
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continue;
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}
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if (ch == '.' &&
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!CurrentToken.empty() &&
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std::isdigit(CurrentToken[0])) {
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// Don't separate doubles "5.4"
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} else if (std::strchr("+-", ch) &&
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CurrentToken.length() > 0 &&
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std::isdigit(CurrentToken[0]) &&
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(CurrentToken[CurrentToken.length()-1] == 'e' ||
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CurrentToken[CurrentToken.length()-1] == 'E') &&
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!MathLib::isHex(CurrentToken)) {
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// Don't separate doubles "4.2e+10"
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} else if (CurrentToken.empty() && ch == '.' && std::isdigit(code.peek())) {
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// tokenize .125 into 0.125
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CurrentToken = "0";
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} else if (std::strchr("+-*/%&|^?!=<>[](){};:,.~\n ", ch)) {
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if (CurrentToken == "#file") {
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// Handle this where strings are handled
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continue;
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} else if (CurrentToken == "#line") {
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// Read to end of line
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std::string line;
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std::getline(code, line);
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unsigned int row;
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std::istringstream fiss(line);
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if (fiss >> row) {
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// Update the current line number
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lineno = row;
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std::string line2;
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if (std::getline(fiss, line2) && line2.length() > 4U) {
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// _"file_name" -> file_name
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line2 = line2.substr(2, line2.length() - 3);
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// Update the current file
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FileIndex = appendFileIfNew(line2);
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}
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} else
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++lineno;
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CurrentToken.clear();
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continue;
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} else if (CurrentToken == "#endfile") {
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if (lineNumbers.empty() || fileIndexes.empty()) { // error
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deallocateTokens();
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return false;
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}
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lineno = lineNumbers.top();
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lineNumbers.pop();
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FileIndex = fileIndexes.top();
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fileIndexes.pop();
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CurrentToken.clear();
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continue;
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}
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addtoken(CurrentToken, lineno, FileIndex, true);
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if (!CurrentToken.empty()) {
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_back->isExpandedMacro(expandedMacro);
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expandedMacro = false;
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}
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CurrentToken.clear();
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if (ch == '\n') {
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if (_settings->terminated())
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return false;
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++lineno;
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continue;
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} else if (ch == ' ') {
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continue;
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}
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CurrentToken += ch;
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// Add "++", "--", ">>" or ... token
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if (std::strchr("+-<>=:&|", ch) && (code.peek() == ch))
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CurrentToken += (char)code.get();
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addtoken(CurrentToken, lineno, FileIndex);
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_back->isExpandedMacro(expandedMacro);
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CurrentToken.clear();
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expandedMacro = false;
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continue;
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}
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CurrentToken += ch;
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}
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addtoken(CurrentToken, lineno, FileIndex, true);
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if (!CurrentToken.empty())
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_back->isExpandedMacro(expandedMacro);
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Token::assignProgressValues(_front);
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for (std::size_t i = 1; i < _files.size(); i++)
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_files[i] = Path::getRelativePath(_files[i], _settings->_basePaths);
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return true;
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}
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//---------------------------------------------------------------------------
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unsigned long long TokenList::calculateChecksum() const
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{
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unsigned long long checksum = 0;
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for (const Token* tok = front(); tok; tok = tok->next()) {
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unsigned int subchecksum1 = tok->flags() + tok->varId() + static_cast<unsigned int>(tok->type());
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unsigned int subchecksum2 = 0;
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for (std::size_t i = 0; i < tok->str().size(); i++)
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subchecksum2 += (unsigned int)tok->str()[i];
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if (!tok->originalName().empty()) {
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for (std::size_t i = 0; i < tok->originalName().size(); i++)
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subchecksum2 += (unsigned int) tok->originalName()[i];
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}
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checksum ^= ((static_cast<unsigned long long>(subchecksum1) << 32) | subchecksum2);
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bool bit1 = (checksum & 1) != 0;
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checksum >>= 1;
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if (bit1)
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checksum |= (1ULL << 63);
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}
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return checksum;
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}
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//---------------------------------------------------------------------------
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struct AST_state {
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std::stack<Token*> op;
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unsigned int depth;
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unsigned int inArrayAssignment;
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bool cpp;
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explicit AST_state(bool cpp_) : depth(0), inArrayAssignment(0), cpp(cpp_) {}
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};
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static bool iscast(const Token *tok)
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{
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if (!Token::Match(tok, "( %var%"))
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return false;
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if (tok->previous() && tok->previous()->isName() && tok->previous()->str() != "return")
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return false;
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if (Token::Match(tok, "( (| typeof (") && Token::Match(tok->link(), ") %num%"))
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return true;
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bool type = false;
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for (const Token *tok2 = tok->next(); tok2; tok2 = tok2->next()) {
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while (tok2->link() && Token::Match(tok2, "(|[|<"))
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tok2 = tok2->link()->next();
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if (tok2->str() == ")")
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return type || tok2->strAt(-1) == "*" ||
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(Token::Match(tok2, ") %any%") &&
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(tok2->strAt(1) == "&" || (!tok2->next()->isOp() && !Token::Match(tok2->next(), "[[]);,?:.]"))));
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if (!Token::Match(tok2, "%var%|*|&|::"))
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return false;
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if (tok2->isStandardType() && tok2->next()->str() != "(")
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type = true;
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}
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return false;
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}
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static void compileUnaryOp(Token *&tok, AST_state& state, void(*f)(Token *&tok, AST_state& state))
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{
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Token *unaryop = tok;
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if (f) {
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tok = tok->next();
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state.depth++;
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if (tok && state.depth <= AST_MAX_DEPTH)
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f(tok, state);
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state.depth--;
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}
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if (!state.op.empty()) {
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unaryop->astOperand1(state.op.top());
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state.op.pop();
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}
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state.op.push(unaryop);
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}
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static void compileBinOp(Token *&tok, AST_state& state, void(*f)(Token *&tok, AST_state& state))
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{
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Token *binop = tok;
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if (f) {
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tok = tok->next();
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state.depth++;
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if (tok && state.depth <= AST_MAX_DEPTH)
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f(tok, state);
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state.depth--;
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}
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// TODO: Should we check if op is empty.
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// * Is it better to add assertion that it isn't?
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// * Write debug warning if it's empty?
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if (!state.op.empty()) {
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binop->astOperand2(state.op.top());
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state.op.pop();
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}
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if (!state.op.empty()) {
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binop->astOperand1(state.op.top());
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state.op.pop();
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}
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state.op.push(binop);
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}
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static void compileExpression(Token *&tok, AST_state& state);
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static void compileTerm(Token *&tok, AST_state& state)
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{
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if (!tok)
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return;
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if (Token::Match(tok, "L %str%|%char%"))
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tok = tok->next();
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if (state.inArrayAssignment && tok->str() == "." && Token::Match(tok->previous(), ",|{")) // Jump over . in C style struct initialization
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tok = tok->next();
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if (tok->isLiteral()) {
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state.op.push(tok);
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tok = tok->next();
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} else if (tok->isName() && tok->str() != "case") {
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if (tok->str() == "return") {
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compileUnaryOp(tok, state, compileExpression);
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state.op.pop();
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} else if (!state.cpp || !Token::Match(tok, "new|delete %var%|*|&|::|(|[")) {
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while (tok->next() && tok->next()->isName())
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tok = tok->next();
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state.op.push(tok);
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if (tok->next() && tok->linkAt(1) && Token::Match(tok, "%var% <"))
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tok = tok->linkAt(1);
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tok = tok->next();
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}
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} else if (tok->str() == "{") {
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if (!state.inArrayAssignment && tok->strAt(-1) != "=") {
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state.op.push(tok);
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tok = tok->link()->next();
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} else {
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if (tok->link() != tok->next()) {
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state.inArrayAssignment++;
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compileUnaryOp(tok, state, compileExpression);
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state.inArrayAssignment--;
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} else {
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state.op.push(tok);
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|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void compileScope(Token *&tok, AST_state& state)
|
|
{
|
|
compileTerm(tok, state);
|
|
while (tok) {
|
|
if (tok->str() == "::") {
|
|
Token *binop = tok;
|
|
tok = tok->next();
|
|
if (tok && tok->str() == "~") // Jump over ~ of destructor definition
|
|
tok = tok->next();
|
|
if (tok)
|
|
compileTerm(tok, state);
|
|
|
|
if (binop->previous() && (binop->previous()->isName() || (binop->previous()->link() && binop->strAt(-1) == ">")))
|
|
compileBinOp(binop, state, nullptr);
|
|
else
|
|
compileUnaryOp(binop, state, nullptr);
|
|
} else break;
|
|
}
|
|
}
|
|
|
|
static bool isPrefixUnary(const Token* tok, bool cpp)
|
|
{
|
|
if (!tok->previous()
|
|
|| ((Token::Match(tok->previous(), "(|[|{|%op%|;|}|?|:|,|.|return|::") || (cpp && tok->strAt(-1) == "throw"))
|
|
&& (tok->previous()->type() != Token::eIncDecOp || tok->type() == Token::eIncDecOp)))
|
|
return true;
|
|
|
|
return tok->strAt(-1) == ")" && iscast(tok->linkAt(-1));
|
|
}
|
|
|
|
static void compilePrecedence2(Token *&tok, AST_state& state)
|
|
{
|
|
compileScope(tok, state);
|
|
while (tok) {
|
|
if (tok->type() == Token::eIncDecOp && !isPrefixUnary(tok, state.cpp)) {
|
|
compileUnaryOp(tok, state, compileScope);
|
|
} else if (tok->str() == "." && tok->strAt(1) != "*") {
|
|
if (tok->strAt(1) == ".") {
|
|
state.op.push(tok);
|
|
tok = tok->tokAt(3);
|
|
break;
|
|
} else
|
|
compileBinOp(tok, state, compileScope);
|
|
} else if (tok->str() == "[") {
|
|
if (state.cpp && isPrefixUnary(tok, state.cpp) && tok->link()->strAt(1) == "(") { // Lambda
|
|
// What we do here:
|
|
// - Nest the round bracket under the square bracket.
|
|
// - Nest what follows the lambda (if anything) with the lambda opening [
|
|
// - Compile the content of the lambda function as separate tree
|
|
Token* squareBracket = tok;
|
|
Token* roundBracket = squareBracket->link()->next();
|
|
Token* curlyBracket = Token::findsimplematch(roundBracket->link()->next(), "{");
|
|
if (!curlyBracket)
|
|
break;
|
|
tok = curlyBracket->next();
|
|
compileExpression(tok, state);
|
|
state.op.push(roundBracket);
|
|
compileUnaryOp(squareBracket, state, nullptr);
|
|
tok = curlyBracket->link()->next();
|
|
} else {
|
|
Token* tok2 = tok;
|
|
if (tok->strAt(1) != "]")
|
|
compileBinOp(tok, state, compileExpression);
|
|
else
|
|
compileUnaryOp(tok, state, compileExpression);
|
|
tok = tok2->link()->next();
|
|
}
|
|
} else if (tok->str() == "(" && (!iscast(tok) || Token::Match(tok->previous(), "if|while|for|switch|catch"))) {
|
|
Token* tok2 = tok;
|
|
tok = tok->next();
|
|
bool opPrevTopSquare = !state.op.empty() && state.op.top() && state.op.top()->str() == "[";
|
|
std::size_t oldOpSize = state.op.size();
|
|
compileExpression(tok, state);
|
|
tok = tok2;
|
|
if ((tok->previous() && tok->previous()->isName() && (tok->strAt(-1) != "return" && (!state.cpp || !Token::Match(tok->previous(), "throw|delete"))))
|
|
|| (tok->strAt(-1) == "]" && (!state.cpp || !Token::Match(tok->linkAt(-1)->previous(), "new|delete")))
|
|
|| (tok->strAt(-1) == ">" && tok->linkAt(-1))
|
|
|| (tok->strAt(-1) == ")" && !iscast(tok->linkAt(-1))) // Don't treat brackets to clarify precedence as function calls
|
|
|| (tok->strAt(-1) == "}" && opPrevTopSquare)) {
|
|
const bool operandInside = oldOpSize < state.op.size();
|
|
if (operandInside)
|
|
compileBinOp(tok, state, nullptr);
|
|
else
|
|
compileUnaryOp(tok, state, nullptr);
|
|
}
|
|
tok = tok->link()->next();
|
|
} else break;
|
|
}
|
|
}
|
|
|
|
static void compilePrecedence3(Token *&tok, AST_state& state)
|
|
{
|
|
compilePrecedence2(tok, state);
|
|
while (tok) {
|
|
if ((Token::Match(tok, "[+-!~*&]") || tok->type() == Token::eIncDecOp) &&
|
|
isPrefixUnary(tok, state.cpp)) {
|
|
if (Token::Match(tok, "* [*,)]")) {
|
|
Token* tok2 = tok;
|
|
while (tok2->next() && tok2->str() == "*")
|
|
tok2 = tok2->next();
|
|
if (Token::Match(tok2, "[>),]")) {
|
|
tok = tok2;
|
|
continue;
|
|
}
|
|
}
|
|
compileUnaryOp(tok, state, compilePrecedence3);
|
|
} else if (tok->str() == "(" && iscast(tok)) {
|
|
Token* tok2 = tok;
|
|
tok = tok->link()->next();
|
|
compilePrecedence3(tok, state);
|
|
compileUnaryOp(tok2, state, nullptr);
|
|
} else if (state.cpp && Token::Match(tok, "new %var%|::|(")) {
|
|
Token* newtok = tok;
|
|
tok = tok->next();
|
|
bool innertype = false;
|
|
if (tok->str() == "(") {
|
|
if (Token::Match(tok, "( &| %var%") && Token::Match(tok->link(), ") ( %type%") && Token::simpleMatch(tok->link()->linkAt(1), ") ("))
|
|
tok = tok->link()->next();
|
|
if (Token::Match(tok->link(), ") ::| %type%"))
|
|
tok = tok->link()->next();
|
|
else if (Token::Match(tok, "( %type%") && Token::Match(tok->link(), ") [();,[]")) {
|
|
tok = tok->next();
|
|
innertype = true;
|
|
} else if (Token::Match(tok, "( &| %var%") && Token::simpleMatch(tok->link(), ") (")) {
|
|
tok = tok->next();
|
|
innertype = true;
|
|
} else {
|
|
/* bad code */
|
|
continue;
|
|
}
|
|
}
|
|
state.op.push(tok);
|
|
while (Token::Match(tok, "%var%|*|&|<|::")) {
|
|
if (tok->link())
|
|
tok = tok->link();
|
|
tok = tok->next();
|
|
}
|
|
if (Token::Match(tok, "( const| %type% ) (")) {
|
|
state.op.push(tok->next());
|
|
tok = tok->link()->next();
|
|
compileBinOp(tok, state, compilePrecedence2);
|
|
} else if (tok->str() == "[" || tok->str() == "(")
|
|
compilePrecedence2(tok, state);
|
|
else if (innertype && Token::simpleMatch(tok, ") [")) {
|
|
tok = tok->next();
|
|
compilePrecedence2(tok, state);
|
|
}
|
|
compileUnaryOp(newtok, state, nullptr);
|
|
if (innertype && Token::simpleMatch(tok, ") ,"))
|
|
tok = tok->next();
|
|
} else if (state.cpp && Token::Match(tok, "delete %var%|*|&|::|(|[")) {
|
|
Token* tok2 = tok;
|
|
tok = tok->next();
|
|
if (tok->str() == "[")
|
|
tok = tok->link()->next();
|
|
compilePrecedence3(tok, state);
|
|
compileUnaryOp(tok2, state, nullptr);
|
|
}
|
|
// TODO: Handle sizeof
|
|
else break;
|
|
}
|
|
}
|
|
|
|
static void compilePointerToElem(Token *&tok, AST_state& state)
|
|
{
|
|
compilePrecedence3(tok, state);
|
|
while (tok) {
|
|
if (Token::simpleMatch(tok, ". *")) {
|
|
compileBinOp(tok, state, compilePrecedence3);
|
|
} else break;
|
|
}
|
|
}
|
|
|
|
static void compileMulDiv(Token *&tok, AST_state& state)
|
|
{
|
|
compilePointerToElem(tok, state);
|
|
while (tok) {
|
|
if (Token::Match(tok, "[/%]") || (tok->str() == "*" && !tok->astOperand1())) {
|
|
if (Token::Match(tok, "* [*,)]")) {
|
|
Token* tok2 = tok;
|
|
while (tok2->next() && tok2->str() == "*")
|
|
tok2 = tok2->next();
|
|
if (Token::Match(tok2, "[>),]")) {
|
|
tok = tok2;
|
|
break;
|
|
}
|
|
}
|
|
compileBinOp(tok, state, compilePointerToElem);
|
|
} else break;
|
|
}
|
|
}
|
|
|
|
static void compileAddSub(Token *&tok, AST_state& state)
|
|
{
|
|
compileMulDiv(tok, state);
|
|
while (tok) {
|
|
if (Token::Match(tok, "+|-") && !tok->astOperand1()) {
|
|
compileBinOp(tok, state, compileMulDiv);
|
|
} else break;
|
|
}
|
|
}
|
|
|
|
static void compileShift(Token *&tok, AST_state& state)
|
|
{
|
|
compileAddSub(tok, state);
|
|
while (tok) {
|
|
if (Token::Match(tok, "<<|>>")) {
|
|
compileBinOp(tok, state, compileAddSub);
|
|
} else break;
|
|
}
|
|
}
|
|
|
|
static void compileRelComp(Token *&tok, AST_state& state)
|
|
{
|
|
compileShift(tok, state);
|
|
while (tok) {
|
|
if (Token::Match(tok, "<|<=|>=|>") && !tok->link()) {
|
|
compileBinOp(tok, state, compileShift);
|
|
} else break;
|
|
}
|
|
}
|
|
|
|
static void compileEqComp(Token *&tok, AST_state& state)
|
|
{
|
|
compileRelComp(tok, state);
|
|
while (tok) {
|
|
if (Token::Match(tok, "==|!=")) {
|
|
compileBinOp(tok, state, compileRelComp);
|
|
} else break;
|
|
}
|
|
}
|
|
|
|
static void compileAnd(Token *&tok, AST_state& state)
|
|
{
|
|
compileEqComp(tok, state);
|
|
while (tok) {
|
|
if (tok->str() == "&" && !tok->astOperand1()) {
|
|
Token* tok2 = tok->next();
|
|
if (!tok2)
|
|
break;
|
|
if (tok2->str() == "&")
|
|
tok2 = tok2->next();
|
|
if (state.cpp && Token::Match(tok2, ",|)")) {
|
|
tok = tok2;
|
|
break; // rValue reference
|
|
}
|
|
compileBinOp(tok, state, compileEqComp);
|
|
} else break;
|
|
}
|
|
}
|
|
|
|
static void compileXor(Token *&tok, AST_state& state)
|
|
{
|
|
compileAnd(tok, state);
|
|
while (tok) {
|
|
if (tok->str() == "^") {
|
|
compileBinOp(tok, state, compileAnd);
|
|
} else break;
|
|
}
|
|
}
|
|
|
|
static void compileOr(Token *&tok, AST_state& state)
|
|
{
|
|
compileXor(tok, state);
|
|
while (tok) {
|
|
if (tok->str() == "|") {
|
|
compileBinOp(tok, state, compileXor);
|
|
} else break;
|
|
}
|
|
}
|
|
|
|
static void compileLogicAnd(Token *&tok, AST_state& state)
|
|
{
|
|
compileOr(tok, state);
|
|
while (tok) {
|
|
if (tok->str() == "&&") {
|
|
compileBinOp(tok, state, compileOr);
|
|
} else break;
|
|
}
|
|
}
|
|
|
|
static void compileLogicOr(Token *&tok, AST_state& state)
|
|
{
|
|
compileLogicAnd(tok, state);
|
|
while (tok) {
|
|
if (tok->str() == "||") {
|
|
compileBinOp(tok, state, compileLogicAnd);
|
|
} else break;
|
|
}
|
|
}
|
|
|
|
static void compileAssignTernary(Token *&tok, AST_state& state)
|
|
{
|
|
compileLogicOr(tok, state);
|
|
while (tok) {
|
|
// TODO: http://en.cppreference.com/w/cpp/language/operator_precedence says:
|
|
// "The expression in the middle of the conditional operator (between ? and :) is parsed as if parenthesized: its precedence relative to ?: is ignored."
|
|
if (tok->isAssignmentOp() || Token::Match(tok, "[?:]")) {
|
|
if (tok->str() == "?" && tok->strAt(1) == ":") {
|
|
state.op.push(0);
|
|
}
|
|
compileBinOp(tok, state, compileAssignTernary);
|
|
} else break;
|
|
}
|
|
}
|
|
|
|
static void compileComma(Token *&tok, AST_state& state)
|
|
{
|
|
compileAssignTernary(tok, state);
|
|
while (tok) {
|
|
if (tok->str() == ",") {
|
|
compileBinOp(tok, state, compileAssignTernary);
|
|
} else break;
|
|
}
|
|
}
|
|
|
|
static void compileExpression(Token *&tok, AST_state& state)
|
|
{
|
|
if (state.depth > AST_MAX_DEPTH)
|
|
return; // ticket #5592
|
|
if (tok)
|
|
compileComma(tok, state);
|
|
}
|
|
|
|
static Token * createAstAtToken(Token *tok, bool cpp)
|
|
{
|
|
if (Token::simpleMatch(tok,"for (")) {
|
|
Token *tok2 = tok->tokAt(2);
|
|
Token *init1 = nullptr;
|
|
const Token * const endPar = tok->next()->link();
|
|
while (tok2 && tok2 != endPar && tok2->str() != ";") {
|
|
if (tok2->str() == "<" && tok2->link()) {
|
|
tok2 = tok2->link();
|
|
if (!tok2)
|
|
break;
|
|
} else if (Token::Match(tok2, "%var% %op%|(|[|.|:|::") || Token::Match(tok2->previous(), "[(;{}] %cop%|(")) {
|
|
init1 = tok2;
|
|
AST_state state1(cpp);
|
|
compileExpression(tok2, state1);
|
|
if (Token::Match(tok2, ";|)"))
|
|
break;
|
|
init1 = 0;
|
|
}
|
|
tok2 = tok2->next();
|
|
}
|
|
if (!tok2 || tok2->str() != ";") {
|
|
if (tok2 == endPar && init1) {
|
|
tok->next()->astOperand2(init1);
|
|
tok->next()->astOperand1(tok);
|
|
}
|
|
return tok2;
|
|
}
|
|
|
|
Token * const init = init1 ? init1 : tok2;
|
|
|
|
Token * const semicolon1 = tok2;
|
|
tok2 = tok2->next();
|
|
AST_state state2(cpp);
|
|
compileExpression(tok2, state2);
|
|
|
|
Token * const semicolon2 = tok2;
|
|
tok2 = tok2->next();
|
|
AST_state state3(cpp);
|
|
compileExpression(tok2, state3);
|
|
|
|
if (init != semicolon1)
|
|
semicolon1->astOperand1(const_cast<Token*>(init->astTop()));
|
|
tok2 = semicolon1->next();
|
|
while (tok2 != semicolon2 && !tok2->isName() && !tok2->isNumber())
|
|
tok2 = tok2->next();
|
|
if (tok2 != semicolon2)
|
|
semicolon2->astOperand1(const_cast<Token*>(tok2->astTop()));
|
|
tok2 = tok->linkAt(1);
|
|
while (tok2 != semicolon2 && !tok2->isName() && !tok2->isNumber())
|
|
tok2 = tok2->previous();
|
|
if (tok2 != semicolon2)
|
|
semicolon2->astOperand2(const_cast<Token*>(tok2->astTop()));
|
|
|
|
semicolon1->astOperand2(semicolon2);
|
|
tok->next()->astOperand1(tok);
|
|
tok->next()->astOperand2(semicolon1);
|
|
|
|
return tok->linkAt(1);
|
|
}
|
|
|
|
if (Token::simpleMatch(tok, "( {"))
|
|
return tok;
|
|
|
|
if (Token::Match(tok, "%type% <") && Token::Match(tok->linkAt(1), "> !!("))
|
|
return tok->linkAt(1);
|
|
|
|
if (tok->str() == "return" || !tok->previous() || Token::Match(tok, "%var% %op%|(|[|.|::|<") || Token::Match(tok->previous(), "[;{}] %cop%|++|--|( !!{")) {
|
|
Token * const tok1 = tok;
|
|
AST_state state(cpp);
|
|
compileExpression(tok, state);
|
|
Token * const endToken = tok;
|
|
if (endToken == tok1)
|
|
return tok1;
|
|
|
|
// Compile inner expressions inside inner ({..})
|
|
for (tok = tok1->next(); tok && tok != endToken; tok = tok ? tok->next() : NULL) {
|
|
if (!Token::simpleMatch(tok, "( {"))
|
|
continue;
|
|
if (tok->next() == endToken)
|
|
break;
|
|
if (Token::simpleMatch(tok, "( { ."))
|
|
break;
|
|
const Token * const endToken2 = tok->linkAt(1);
|
|
for (; tok && tok != endToken && tok != endToken2; tok = tok ? tok->next() : NULL)
|
|
tok = createAstAtToken(tok, cpp);
|
|
}
|
|
|
|
return endToken ? endToken->previous() : NULL;
|
|
}
|
|
|
|
return tok;
|
|
}
|
|
|
|
void TokenList::createAst()
|
|
{
|
|
for (Token *tok = _front; tok; tok = tok ? tok->next() : NULL) {
|
|
tok = createAstAtToken(tok, isCPP());
|
|
}
|
|
}
|
|
|
|
const std::string& TokenList::file(const Token *tok) const
|
|
{
|
|
return _files.at(tok->fileIndex());
|
|
}
|
|
|
|
std::string TokenList::fileLine(const Token *tok) const
|
|
{
|
|
return ErrorLogger::ErrorMessage::FileLocation(tok, this).stringify();
|
|
}
|