2298 lines
91 KiB
C++
2298 lines
91 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2018 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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#include "templatesimplifier.h"
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#include "errorlogger.h"
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#include "mathlib.h"
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#include "settings.h"
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#include "token.h"
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#include "tokenize.h"
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#include "tokenlist.h"
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#include <algorithm>
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#include <cassert>
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#include <iostream>
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#include <stack>
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#include <utility>
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namespace {
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class FindToken {
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public:
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explicit FindToken(const Token *token) : mToken(token) {}
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bool operator()(const TemplateSimplifier::TokenAndName &tokenAndName) const {
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return tokenAndName.token == mToken;
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}
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private:
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const Token * const mToken;
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};
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class FindName {
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public:
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explicit FindName(const std::string &name) : mName(name) {}
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bool operator()(const TemplateSimplifier::TokenAndName &tokenAndName) const {
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return tokenAndName.name == mName;
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}
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private:
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const std::string mName;
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};
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}
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TemplateSimplifier::TokenAndName::TokenAndName(Token *tok, const std::string &s, const std::string &n, const Token *nt, const Token *pe) :
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token(tok), scope(s), name(n), nameToken(nt), paramEnd(pe)
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{
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if (token)
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token->templateSimplifierPointer(this);
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}
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TemplateSimplifier::TokenAndName::TokenAndName(const TokenAndName& otherTok) :
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token(otherTok.token), scope(otherTok.scope), name(otherTok.name), nameToken(otherTok.nameToken), paramEnd(otherTok.paramEnd)
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{
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if (token)
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token->templateSimplifierPointer(this);
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}
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TemplateSimplifier::TokenAndName::~TokenAndName()
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{
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if (token)
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token->templateSimplifierPointers().erase(this);
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}
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TemplateSimplifier::TemplateSimplifier(Tokenizer *tokenizer)
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: mTokenList(tokenizer->list), mSettings(tokenizer->mSettings), mErrorLogger(tokenizer->mErrorLogger)
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{
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}
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TemplateSimplifier::~TemplateSimplifier()
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{
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}
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void TemplateSimplifier::cleanupAfterSimplify()
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{
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bool goback = false;
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for (Token *tok = mTokenList.front(); tok; tok = tok->next()) {
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if (goback) {
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tok = tok->previous();
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goback = false;
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}
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if (tok->str() == "(")
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tok = tok->link();
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else if (Token::Match(tok, "template < > %name%")) {
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const Token *end = tok;
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while (end) {
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if (end->str() == ";")
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break;
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if (end->str() == "{") {
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end = end->link()->next();
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break;
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}
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if (!Token::Match(end, "%name%|::|<|>|,")) {
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end = nullptr;
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break;
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}
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end = end->next();
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}
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if (end) {
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Token::eraseTokens(tok,end);
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tok->deleteThis();
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}
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}
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else if (Token::Match(tok, "%type% <") &&
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(!tok->previous() || tok->previous()->str() == ";")) {
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const Token *tok2 = tok->tokAt(2);
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std::string type;
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while (Token::Match(tok2, "%type%|%num% ,")) {
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type += tok2->str() + ",";
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tok2 = tok2->tokAt(2);
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}
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if (Token::Match(tok2, "%type%|%num% > (")) {
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type += tok2->str();
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tok->str(tok->str() + "<" + type + ">");
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Token::eraseTokens(tok, tok2->tokAt(2));
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if (tok == mTokenList.front())
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goback = true;
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}
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}
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}
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}
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void TemplateSimplifier::checkComplicatedSyntaxErrorsInTemplates()
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{
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// check for more complicated syntax errors when using templates..
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for (const Token *tok = mTokenList.front(); tok; tok = tok->next()) {
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// skip executing scopes (ticket #3183)..
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if (Token::simpleMatch(tok, "( {")) {
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tok = tok->link();
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if (!tok)
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syntaxError(nullptr);
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}
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// skip executing scopes..
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const Token *start = Tokenizer::startOfExecutableScope(tok);
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if (start) {
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tok = start->link();
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}
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// skip executing scopes (ticket #1985)..
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else if (Token::simpleMatch(tok, "try {")) {
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tok = tok->next()->link();
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while (Token::simpleMatch(tok, "} catch (")) {
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tok = tok->linkAt(2);
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if (Token::simpleMatch(tok, ") {"))
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tok = tok->next()->link();
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}
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}
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if (!tok)
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syntaxError(nullptr);
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// not start of statement?
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if (tok->previous() && !Token::Match(tok, "[;{}]"))
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continue;
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// skip starting tokens.. ;;; typedef typename foo::bar::..
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while (Token::simpleMatch(tok, ";"))
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tok = tok->next();
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while (Token::Match(tok, "typedef|typename"))
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tok = tok->next();
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while (Token::Match(tok, "%type% ::"))
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tok = tok->tokAt(2);
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if (!tok)
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break;
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// template variable or type..
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if (Token::Match(tok, "%type% <")) {
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// these are used types..
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std::set<std::string> usedtypes;
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// parse this statement and see if the '<' and '>' are matching
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unsigned int level = 0;
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for (const Token *tok2 = tok; tok2 && !Token::simpleMatch(tok2, ";"); tok2 = tok2->next()) {
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if (Token::simpleMatch(tok2, "{") && (!Token::Match(tok2->previous(), ">|%type%") || Token::simpleMatch(tok2->link(), "} ;")))
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break;
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if (tok2->str() == "(")
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tok2 = tok2->link();
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else if (tok2->str() == "<") {
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bool inclevel = false;
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if (Token::simpleMatch(tok2->previous(), "operator <"))
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;
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else if (level == 0)
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inclevel = true;
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else if (tok2->next() && tok2->next()->isStandardType())
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inclevel = true;
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else if (Token::simpleMatch(tok2, "< typename"))
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inclevel = true;
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else if (Token::Match(tok2->tokAt(-2), "<|, %type% <") && usedtypes.find(tok2->previous()->str()) != usedtypes.end())
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inclevel = true;
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else if (Token::Match(tok2, "< %type%") && usedtypes.find(tok2->next()->str()) != usedtypes.end())
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inclevel = true;
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else if (Token::Match(tok2, "< %type%")) {
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// is the next token a type and not a variable/constant?
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// assume it's a type if there comes another "<"
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const Token *tok3 = tok2->next();
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while (Token::Match(tok3, "%type% ::"))
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tok3 = tok3->tokAt(2);
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if (Token::Match(tok3, "%type% <"))
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inclevel = true;
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}
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if (inclevel) {
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++level;
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if (Token::Match(tok2->tokAt(-2), "<|, %type% <"))
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usedtypes.insert(tok2->previous()->str());
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}
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} else if (tok2->str() == ">") {
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if (level > 0)
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--level;
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} else if (tok2->str() == ">>") {
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if (level > 0)
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--level;
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if (level > 0)
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--level;
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}
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}
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if (level > 0)
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syntaxError(tok);
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}
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}
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}
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unsigned int TemplateSimplifier::templateParameters(const Token *tok)
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{
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unsigned int numberOfParameters = 1;
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if (!tok)
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return 0;
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if (tok->str() != "<")
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return 0;
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tok = tok->next();
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unsigned int level = 0;
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while (tok) {
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// skip const/volatile
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if (Token::Match(tok, "const|volatile"))
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tok = tok->next();
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// skip struct/union
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if (Token::Match(tok, "struct|union"))
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tok = tok->next();
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// Skip '&'
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if (Token::Match(tok, "& ::| %name%"))
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tok = tok->next();
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// Skip variadic types (Ticket #5774, #6059, #6172)
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if (Token::Match(tok, "%type% . . .")) {
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tok = tok->tokAt(4);
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continue;
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}
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// Skip '=', '?', ':'
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if (Token::Match(tok, "=|?|:"))
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tok = tok->next();
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if (!tok)
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return 0;
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// Skip casts
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if (tok->str() == "(") {
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tok = tok->link();
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if (tok)
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tok = tok->next();
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}
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// skip std::
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if (tok && tok->str() == "::")
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tok = tok->next();
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while (Token::Match(tok, "%name% ::")) {
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tok = tok->tokAt(2);
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if (tok && tok->str() == "*") // Ticket #5759: Class member pointer as a template argument; skip '*'
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tok = tok->next();
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}
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if (!tok)
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return 0;
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// num/type ..
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if (!tok->isNumber() && tok->tokType() != Token::eChar && !tok->isName() && !tok->isOp())
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return 0;
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tok = tok->next();
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if (!tok)
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return 0;
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// * / const
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while (Token::Match(tok, "*|&|&&|const"))
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tok = tok->next();
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if (!tok)
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return 0;
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// Function pointer or prototype..
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while (Token::Match(tok, "(|[")) {
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if (!tok->link())
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syntaxError(tok);
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tok = tok->link()->next();
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while (Token::Match(tok, "const|volatile")) // Ticket #5786: Skip function cv-qualifiers
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tok = tok->next();
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}
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if (!tok)
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return 0;
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// inner template
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if (tok->str() == "<") {
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++level;
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tok = tok->next();
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}
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if (!tok)
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return 0;
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// ,/>
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while (Token::Match(tok, ">|>>")) {
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if (level == 0)
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return ((tok->str() == ">") ? numberOfParameters : 0);
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--level;
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if (tok->str() == ">>") {
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if (level == 0)
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return numberOfParameters;
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--level;
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}
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tok = tok->next();
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if (Token::simpleMatch(tok,"("))
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tok = tok->link()->next();
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if (!tok)
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return 0;
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}
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if (tok->str() != ",")
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continue;
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if (level == 0)
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++numberOfParameters;
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tok = tok->next();
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}
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return 0;
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}
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void TemplateSimplifier::eraseTokens(Token *begin, const Token *end)
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{
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if (!begin || begin == end)
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return;
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while (begin->next() && begin->next() != end) {
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begin->deleteNext();
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}
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}
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void TemplateSimplifier::deleteToken(Token *tok)
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{
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if (tok->next())
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tok->next()->deletePrevious();
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else
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tok->deleteThis();
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}
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bool TemplateSimplifier::removeTemplate(Token *tok)
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{
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if (!Token::simpleMatch(tok, "template <"))
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return false;
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int indentlevel = 0;
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unsigned int countgt = 0; // Counter for ">"
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for (const Token *tok2 = tok->next(); tok2; tok2 = tok2->next()) {
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if (tok2->str() == "(") {
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tok2 = tok2->link();
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} else if (tok2->str() == ")") { // garbage code! (#3504)
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eraseTokens(tok,tok2);
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deleteToken(tok);
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return false;
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}
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else if (tok2->str() == "{") {
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tok2 = tok2->link()->next();
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if (tok2 && tok2->str() == ";" && tok2->next())
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tok2 = tok2->next();
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eraseTokens(tok, tok2);
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deleteToken(tok);
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return true;
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} else if (tok2->str() == "}") { // garbage code! (#3449)
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eraseTokens(tok,tok2);
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deleteToken(tok);
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return false;
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}
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// Count ">"
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if (tok2->str() == ">")
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countgt++;
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// don't remove constructor
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if (tok2->str() == "explicit" ||
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(countgt == 1 && Token::Match(tok2->previous(), "> %type% (") &&
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Tokenizer::startOfExecutableScope(tok2->linkAt(1)))) {
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eraseTokens(tok, tok2);
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deleteToken(tok);
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return true;
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}
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if (tok2->str() == ";") {
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tok2 = tok2->next();
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eraseTokens(tok, tok2);
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deleteToken(tok);
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return true;
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}
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if (tok2->str() == "<")
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++indentlevel;
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else if (indentlevel >= 2 && tok2->str() == ">")
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--indentlevel;
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else if (Token::Match(tok2, "> class|struct|union %name% [,)]")) {
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tok2 = tok2->next();
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eraseTokens(tok, tok2);
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deleteToken(tok);
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return true;
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}
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}
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return false;
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}
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/// TODO: This is copy pasted from Tokenizer. We should reuse this code.
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namespace {
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struct ScopeInfo2 {
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ScopeInfo2(const std::string &name_, const Token *bodyEnd_) : name(name_), bodyEnd(bodyEnd_) {}
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const std::string name;
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const Token * const bodyEnd;
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};
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}
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static std::string getScopeName(const std::list<ScopeInfo2> &scopeInfo)
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{
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std::string ret;
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for (const ScopeInfo2 &i : scopeInfo)
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ret += (ret.empty() ? "" : " :: ") + i.name;
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return ret;
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}
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static void setScopeInfo(const Token *tok, std::list<ScopeInfo2> *scopeInfo)
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{
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while (tok->str() == "}" && !scopeInfo->empty() && tok == scopeInfo->back().bodyEnd)
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scopeInfo->pop_back();
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if (!Token::Match(tok, "namespace|class|struct|union %name% {|:|::"))
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return;
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tok = tok->next();
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std::string classname = tok->str();
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while (Token::Match(tok, "%name% :: %name%")) {
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tok = tok->tokAt(2);
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classname += " :: " + tok->str();
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}
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tok = tok->next();
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if (tok && tok->str() == ":") {
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// ...
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}
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if (tok && tok->str() == "{") {
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scopeInfo->emplace_back(classname,tok->link());
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}
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}
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bool TemplateSimplifier::getTemplateDeclarations()
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{
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bool codeWithTemplates = false;
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std::list<ScopeInfo2> scopeInfo;
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for (Token *tok = mTokenList.front(); tok; tok = tok->next()) {
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if (Token::Match(tok, "}|namespace|class|struct|union")) {
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setScopeInfo(tok, &scopeInfo);
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continue;
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}
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if (!Token::simpleMatch(tok, "template <"))
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continue;
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// Some syntax checks, see #6865
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if (!tok->tokAt(2))
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syntaxError(tok->next());
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if (tok->strAt(2)=="typename" &&
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!Token::Match(tok->tokAt(3), "%name%|.|,|=|>"))
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syntaxError(tok->next());
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codeWithTemplates = true;
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const Token * const parmEnd = tok->next()->findClosingBracket();
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for (const Token *tok2 = parmEnd; tok2; tok2 = tok2->next()) {
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if (tok2->str() == "(")
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tok2 = tok2->link();
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else if (tok2->str() == ")")
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break;
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// skip decltype(...)
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else if (Token::Match(tok2, "decltype ("))
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tok2 = tok2->linkAt(1);
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// Declaration => add to mTemplateForwardDeclarations
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else if (tok2->str() == ";") {
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const int namepos = getTemplateNamePosition(parmEnd, true);
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if (namepos > 0)
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mTemplateForwardDeclarations.emplace_back(tok, getScopeName(scopeInfo), parmEnd->strAt(namepos), parmEnd->tokAt(namepos), parmEnd);
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break;
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}
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// Implementation => add to mTemplateDeclarations
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else if (tok2->str() == "{") {
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const int namepos = getTemplateNamePosition(parmEnd, false);
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if (namepos > 0)
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mTemplateDeclarations.emplace_back(tok, getScopeName(scopeInfo), parmEnd->strAt(namepos), parmEnd->tokAt(namepos), parmEnd);
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break;
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}
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}
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}
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return codeWithTemplates;
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}
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void TemplateSimplifier::getTemplateInstantiations()
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{
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std::list<ScopeInfo2> scopeList;
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for (Token *tok = mTokenList.front(); tok; tok = tok->next()) {
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if (Token::Match(tok, "}|namespace|class|struct|union")) {
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setScopeInfo(tok, &scopeList);
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continue;
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}
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// template definition.. skip it
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if (Token::simpleMatch(tok, "template <")) {
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tok = tok->next()->findClosingBracket();
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if (!tok)
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break;
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|
// #7914
|
|
// Ignore template instantiations within template definitions: they will only be
|
|
// handled if the definition is actually instantiated
|
|
const Token *tok2 = Token::findmatch(tok, "{|;");
|
|
if (tok2 && tok2->str() == "{")
|
|
tok = tok2->link();
|
|
} else if (Token::Match(tok->previous(), "(|{|}|;|=|>|<<|:|.|*|& %name% ::|<") ||
|
|
Token::Match(tok->previous(), "%type% %name% ::|<") ||
|
|
Token::Match(tok->tokAt(-2), "[,:] private|protected|public %name% ::|<")) {
|
|
|
|
std::string scopeName = getScopeName(scopeList);
|
|
while (Token::Match(tok, "%name% :: %name%")) {
|
|
scopeName += (scopeName.empty() ? "" : " :: ") + tok->str();
|
|
tok = tok->tokAt(2);
|
|
}
|
|
if (!Token::Match(tok, "%name% <"))
|
|
continue;
|
|
|
|
// Add inner template instantiations first => go to the ">"
|
|
// and then parse backwards, adding all seen instantiations
|
|
const Token *tok2 = tok->next()->findClosingBracket();
|
|
|
|
// parse backwards and add template instantiations
|
|
// TODO
|
|
for (; tok2 && tok2 != tok; tok2 = tok2->previous()) {
|
|
if (Token::Match(tok2, ", %name% <") &&
|
|
templateParameters(tok2->tokAt(2))) {
|
|
mTemplateInstantiations.emplace_back(tok2->next(), getScopeName(scopeList), tok2->strAt(1), tok2->tokAt(1));
|
|
} else if (Token::Match(tok2->next(), "class|struct"))
|
|
const_cast<Token *>(tok2)->deleteNext();
|
|
}
|
|
|
|
// Add outer template..
|
|
if (templateParameters(tok->next())) {
|
|
const std::string scopeName1(scopeName);
|
|
while (true) {
|
|
const std::string fullName = scopeName + (scopeName.empty()?"":" :: ") + tok->str();
|
|
const std::list<TokenAndName>::const_iterator it = std::find_if(mTemplateDeclarations.begin(), mTemplateDeclarations.end(), FindName(fullName));
|
|
if (it != mTemplateDeclarations.end()) {
|
|
mTemplateInstantiations.emplace_back(tok, getScopeName(scopeList), fullName, tok);
|
|
break;
|
|
} else {
|
|
if (scopeName.empty()) {
|
|
mTemplateInstantiations.emplace_back(tok, getScopeName(scopeList), scopeName1 + (scopeName1.empty()?"":" :: ") + tok->str(), tok);
|
|
break;
|
|
}
|
|
const std::string::size_type pos = scopeName.rfind(" :: ");
|
|
scopeName = (pos == std::string::npos) ? std::string() : scopeName.substr(0,pos);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void TemplateSimplifier::useDefaultArgumentValues()
|
|
{
|
|
for (TokenAndName &template1 : mTemplateDeclarations) {
|
|
// template parameters with default value has syntax such as:
|
|
// x = y
|
|
// this list will contain all the '=' tokens for such arguments
|
|
std::list<Token *> eq;
|
|
// and this set the position of parameters with a default value
|
|
std::set<std::size_t> defaultedArgPos;
|
|
|
|
// parameter number. 1,2,3,..
|
|
std::size_t templatepar = 1;
|
|
|
|
// parameter depth
|
|
std::size_t templateParmDepth = 0;
|
|
|
|
// the template classname. This will be empty for template functions
|
|
std::string classname;
|
|
|
|
// Scan template declaration..
|
|
for (Token *tok = template1.token; tok; tok = tok->next()) {
|
|
if (Token::simpleMatch(tok, "template < >")) { // Ticket #5762: Skip specialization tokens
|
|
tok = tok->tokAt(2);
|
|
if (0 == templateParmDepth)
|
|
break;
|
|
continue;
|
|
}
|
|
|
|
if (tok->str() == "(") { // Ticket #6835
|
|
tok = tok->link();
|
|
continue;
|
|
}
|
|
|
|
if (tok->str() == "<" && templateParameters(tok))
|
|
++templateParmDepth;
|
|
|
|
// end of template parameters?
|
|
if (tok->str() == ">") {
|
|
if (Token::Match(tok, "> class|struct|union %name%"))
|
|
classname = tok->strAt(2);
|
|
if (templateParmDepth<2)
|
|
break;
|
|
else
|
|
--templateParmDepth;
|
|
}
|
|
|
|
// next template parameter
|
|
if (tok->str() == "," && (1 == templateParmDepth)) // Ticket #5823: Properly count parameters
|
|
++templatepar;
|
|
|
|
// default parameter value?
|
|
else if (Token::Match(tok, "= !!>")) {
|
|
if (defaultedArgPos.insert(templatepar).second) {
|
|
eq.push_back(tok);
|
|
} else {
|
|
// Ticket #5605: Syntax error (two equal signs for the same parameter), bail out
|
|
eq.clear();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (eq.empty() || classname.empty())
|
|
continue;
|
|
|
|
// iterate through all template instantiations
|
|
for (const TokenAndName &templateInst : mTemplateInstantiations) {
|
|
Token *tok = templateInst.token;
|
|
|
|
if (!Token::simpleMatch(tok, (classname + " <").c_str()))
|
|
continue;
|
|
|
|
// count the parameters..
|
|
tok = tok->next();
|
|
const unsigned int usedpar = templateParameters(tok);
|
|
tok = tok->findClosingBracket();
|
|
|
|
if (tok && tok->str() == ">") {
|
|
tok = tok->previous();
|
|
std::list<Token *>::const_iterator it = eq.begin();
|
|
for (std::size_t i = (templatepar - eq.size()); it != eq.end() && i < usedpar; ++i)
|
|
++it;
|
|
while (it != eq.end()) {
|
|
int indentlevel = 0;
|
|
tok->insertToken(",");
|
|
tok = tok->next();
|
|
const Token *from = (*it)->next();
|
|
std::stack<Token *> links;
|
|
while (from && (!links.empty() || indentlevel || !Token::Match(from, ",|>"))) {
|
|
if (from->str() == "<")
|
|
++indentlevel;
|
|
else if (from->str() == ">")
|
|
--indentlevel;
|
|
tok->insertToken(from->str(), from->originalName());
|
|
tok = tok->next();
|
|
if (Token::Match(tok, "(|["))
|
|
links.push(tok);
|
|
else if (!links.empty() && Token::Match(tok, ")|]")) {
|
|
Token::createMutualLinks(links.top(), tok);
|
|
links.pop();
|
|
}
|
|
from = from->next();
|
|
}
|
|
++it;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (Token * const eqtok : eq) {
|
|
Token *tok2;
|
|
int indentlevel = 0;
|
|
for (tok2 = eqtok->next(); tok2; tok2 = tok2->next()) {
|
|
if (Token::Match(tok2, ";|)|}|]")) { // bail out #6607
|
|
tok2 = nullptr;
|
|
break;
|
|
}
|
|
if (Token::Match(tok2, "(|{|["))
|
|
tok2 = tok2->link();
|
|
else if (Token::Match(tok2, "%type% <") && templateParameters(tok2->next())) {
|
|
std::list<TokenAndName>::iterator ti = std::find_if(mTemplateInstantiations.begin(),
|
|
mTemplateInstantiations.end(),
|
|
FindToken(tok2));
|
|
if (ti != mTemplateInstantiations.end())
|
|
mTemplateInstantiations.erase(ti);
|
|
++indentlevel;
|
|
} else if (indentlevel > 0 && tok2->str() == ">")
|
|
--indentlevel;
|
|
else if (indentlevel == 0 && Token::Match(tok2, ",|>"))
|
|
break;
|
|
if (indentlevel < 0)
|
|
break;
|
|
}
|
|
// something went wrong, don't call eraseTokens()
|
|
// with a nullptr "end" parameter (=all remaining tokens).
|
|
if (!tok2)
|
|
continue;
|
|
|
|
// don't strip args from uninstantiated templates
|
|
std::list<TokenAndName>::iterator ti2 = std::find_if(mTemplateInstantiations.begin(),
|
|
mTemplateInstantiations.end(),
|
|
FindName(template1.name));
|
|
|
|
if (ti2 == mTemplateInstantiations.end())
|
|
continue;
|
|
|
|
eraseTokens(eqtok, tok2);
|
|
eqtok->deleteThis();
|
|
|
|
// update parameter end pointer
|
|
template1.paramEnd = template1.token->next()->findClosingBracket();
|
|
}
|
|
}
|
|
}
|
|
|
|
void TemplateSimplifier::simplifyTemplateAliases()
|
|
{
|
|
std::list<TokenAndName>::iterator it1, it2;
|
|
for (it1 = mTemplateInstantiations.begin(); it1 != mTemplateInstantiations.end();) {
|
|
TokenAndName &templateAlias = *it1;
|
|
++it1;
|
|
Token *startToken = templateAlias.token;
|
|
while (Token::Match(startToken->tokAt(-2), "%name% :: %name%"))
|
|
startToken = startToken->tokAt(-2);
|
|
if (!Token::Match(startToken->tokAt(-4), "> using %name% = %name% ::|<"))
|
|
continue;
|
|
const std::string aliasName(startToken->strAt(-2));
|
|
const Token * const aliasToken1 = startToken;
|
|
|
|
// Get start token for alias
|
|
startToken = startToken->tokAt(-5);
|
|
while (Token::Match(startToken, "%name%|<|>|>>|,"))
|
|
startToken = startToken->previous();
|
|
if (!Token::Match(startToken, "[;{}] template <"))
|
|
continue;
|
|
|
|
// alias parameters..
|
|
std::vector<const Token *> aliasParameters;
|
|
getTemplateParametersInDeclaration(startToken->tokAt(3), aliasParameters);
|
|
std::map<std::string, unsigned int> aliasParameterNames;
|
|
for (unsigned int argnr = 0; argnr < aliasParameters.size(); ++argnr)
|
|
aliasParameterNames[aliasParameters[argnr]->str()] = argnr;
|
|
|
|
// Look for alias usages..
|
|
const Token *endToken = nullptr;
|
|
for (it2 = it1; it2 != mTemplateInstantiations.end(); ++it2) {
|
|
TokenAndName &aliasUsage = *it2;
|
|
if (aliasUsage.name != aliasName)
|
|
continue;
|
|
std::vector<std::pair<Token *, Token *>> args;
|
|
Token *tok2 = aliasUsage.token->tokAt(2);
|
|
while (tok2) {
|
|
Token * const start = tok2;
|
|
while (tok2 && !Token::Match(tok2, "[,>;{}]")) {
|
|
if (tok2->link() && Token::Match(tok2, "(|<|["))
|
|
tok2 = tok2->link();
|
|
tok2 = tok2->next();
|
|
}
|
|
|
|
args.emplace_back(start, tok2);
|
|
if (tok2 && tok2->str() == ",") {
|
|
tok2 = tok2->next();
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
if (!tok2 || tok2->str() != ">" || args.size() != aliasParameters.size())
|
|
continue;
|
|
|
|
// Replace template alias code..
|
|
aliasUsage.name = templateAlias.name;
|
|
if (aliasUsage.name.find(' ') == std::string::npos) {
|
|
const Token *temp = aliasToken1;
|
|
while (temp && temp != templateAlias.token) {
|
|
aliasUsage.token->insertToken(temp->str(), "", true);
|
|
temp = temp->next();
|
|
}
|
|
aliasUsage.token->str(templateAlias.token->str());
|
|
} else {
|
|
tok2 = TokenList::copyTokens(aliasUsage.token, aliasToken1, templateAlias.token, true);
|
|
deleteToken(aliasUsage.token);
|
|
aliasUsage.token = tok2;
|
|
}
|
|
tok2 = aliasUsage.token->next(); // the '<'
|
|
const Token * const endToken1 = templateAlias.token->next()->findClosingBracket();
|
|
const Token * const endToken2 = TokenList::copyTokens(tok2, templateAlias.token->tokAt(2), endToken1->previous(), false);
|
|
for (const Token *tok1 = templateAlias.token->next(); tok2 != endToken2; tok1 = tok1->next(), tok2 = tok2->next()) {
|
|
if (!tok2->isName())
|
|
continue;
|
|
if (aliasParameterNames.find(tok2->str()) == aliasParameterNames.end()) {
|
|
// Create template instance..
|
|
if (Token::Match(tok1, "%name% <")) {
|
|
const std::list<TokenAndName>::iterator it = std::find_if(mTemplateInstantiations.begin(),
|
|
mTemplateInstantiations.end(),
|
|
FindToken(tok1));
|
|
if (it != mTemplateInstantiations.end())
|
|
mTemplateInstantiations.emplace_back(tok2, it->scope, it->name, it->nameToken);
|
|
}
|
|
continue;
|
|
}
|
|
const unsigned int argnr = aliasParameterNames[tok2->str()];
|
|
const Token * const fromStart = args[argnr].first;
|
|
const Token * const fromEnd = args[argnr].second->previous();
|
|
Token * const destToken = tok2;
|
|
tok2 = TokenList::copyTokens(tok2, fromStart, fromEnd, true);
|
|
if (tok2 == destToken->next())
|
|
tok2 = destToken;
|
|
destToken->deleteThis();
|
|
}
|
|
|
|
endToken = endToken1->next();
|
|
|
|
// Remove alias usage code (parameters)
|
|
Token::eraseTokens(tok2, args.back().second);
|
|
}
|
|
if (endToken) {
|
|
// Remove all template instantiations in template alias
|
|
for (const Token *tok = startToken; tok != endToken; tok = tok->next()) {
|
|
if (!Token::Match(tok, "%name% <"))
|
|
continue;
|
|
std::list<TokenAndName>::iterator it = std::find_if(mTemplateInstantiations.begin(),
|
|
mTemplateInstantiations.end(),
|
|
FindToken(tok));
|
|
if (it == mTemplateInstantiations.end())
|
|
continue;
|
|
std::list<TokenAndName>::iterator next = it;
|
|
++next;
|
|
if (it == it1)
|
|
it1 = next;
|
|
mTemplateInstantiations.erase(it,next);
|
|
}
|
|
|
|
Token::eraseTokens(startToken, endToken);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool TemplateSimplifier::instantiateMatch(const Token *instance, const std::size_t numberOfArguments, const char patternAfter[])
|
|
{
|
|
// if (!Token::simpleMatch(instance, (name + " <").c_str()))
|
|
// return false;
|
|
|
|
if (numberOfArguments != templateParameters(instance->next()))
|
|
return false;
|
|
|
|
if (patternAfter) {
|
|
const Token *tok = instance;
|
|
unsigned int indentlevel = 0;
|
|
for (tok = instance; tok && (tok->str() != ">" || indentlevel > 0); tok = tok->next()) {
|
|
if (Token::Match(tok, "<|,|(|:: %name% <") && templateParameters(tok->tokAt(2)) > 0)
|
|
++indentlevel;
|
|
if (indentlevel > 0 && tok->str() == ">")
|
|
--indentlevel;
|
|
}
|
|
if (!tok || !Token::Match(tok->next(), patternAfter))
|
|
return false;
|
|
}
|
|
|
|
// nothing mismatching was found..
|
|
return true;
|
|
}
|
|
|
|
// Utility function for TemplateSimplifier::getTemplateNamePosition, that works on template functions
|
|
bool TemplateSimplifier::getTemplateNamePositionTemplateFunction(const Token *tok, int &namepos)
|
|
{
|
|
namepos = 1;
|
|
while (tok && tok->next()) {
|
|
if (Token::Match(tok->next(), ";|{"))
|
|
return false;
|
|
// skip decltype(...)
|
|
else if (Token::Match(tok, "decltype (")) {
|
|
const Token * end = tok->linkAt(1);
|
|
while (tok && tok != end) {
|
|
tok = tok->next();
|
|
namepos++;
|
|
}
|
|
} else if (Token::Match(tok->next(), "%type% <")) {
|
|
const Token *closing = tok->tokAt(2)->findClosingBracket();
|
|
if (closing) {
|
|
if (closing->strAt(1) == "(" && Tokenizer::isFunctionHead(closing->next(), ";|{|:", true))
|
|
return true;
|
|
while (tok && tok->next() && tok->next() != closing) {
|
|
tok = tok->next();
|
|
namepos++;
|
|
}
|
|
}
|
|
} else if (Token::Match(tok->next(), "%type% (") && Tokenizer::isFunctionHead(tok->tokAt(2), ";|{|:", true)) {
|
|
return true;
|
|
}
|
|
tok = tok->next();
|
|
namepos++;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
int TemplateSimplifier::getTemplateNamePosition(const Token *tok, bool forward)
|
|
{
|
|
// get the position of the template name
|
|
int namepos = 0;
|
|
if ((forward && Token::Match(tok, "> class|struct|union %type% :|<|;")) ||
|
|
(!forward && Token::Match(tok, "> class|struct|union %type% {|:|<")))
|
|
namepos = 2;
|
|
else if (!getTemplateNamePositionTemplateFunction(tok, namepos))
|
|
return -1; // Name not found
|
|
|
|
return namepos;
|
|
}
|
|
|
|
void TemplateSimplifier::addNamespace(const TokenAndName &templateDeclaration, const Token *tok)
|
|
{
|
|
// find start of qualification
|
|
const Token * tokStart = tok;
|
|
int offset = 0;
|
|
while (Token::Match(tokStart->tokAt(-2), "%name% ::")) {
|
|
tokStart = tokStart->tokAt(-2);
|
|
offset -= 2;
|
|
}
|
|
// decide if namespace needs to be inserted in or appended to token list
|
|
const bool insert = tokStart != tok;
|
|
|
|
std::string::size_type start = 0;
|
|
std::string::size_type end = 0;
|
|
while ((end = templateDeclaration.scope.find(" ", start)) != std::string::npos) {
|
|
std::string token = templateDeclaration.scope.substr(start, end - start);
|
|
if (insert)
|
|
mTokenList.back()->tokAt(offset)->insertToken(token, "");
|
|
else
|
|
mTokenList.addtoken(token, tok->linenr(), tok->fileIndex());
|
|
start = end + 1;
|
|
}
|
|
if (insert) {
|
|
mTokenList.back()->tokAt(offset)->insertToken(templateDeclaration.scope.substr(start), "");
|
|
mTokenList.back()->tokAt(offset)->insertToken("::", "");
|
|
} else {
|
|
mTokenList.addtoken(templateDeclaration.scope.substr(start), tok->linenr(), tok->fileIndex());
|
|
mTokenList.addtoken("::", tok->linenr(), tok->fileIndex());
|
|
}
|
|
}
|
|
|
|
bool TemplateSimplifier::alreadyHasNamespace(const TokenAndName &templateDeclaration, const Token *tok) const
|
|
{
|
|
std::string scope = templateDeclaration.scope;
|
|
|
|
// get the length in tokens of the namespace
|
|
std::string::size_type pos = 0;
|
|
int offset = -2;
|
|
|
|
while ((pos = scope.find("::", pos)) != std::string::npos) {
|
|
offset -= 2;
|
|
pos += 2;
|
|
}
|
|
|
|
return Token::simpleMatch(tok->tokAt(offset), scope.c_str()) ;
|
|
}
|
|
|
|
void TemplateSimplifier::expandTemplate(
|
|
const TokenAndName &templateDeclaration,
|
|
const TokenAndName &templateInstantiation,
|
|
const std::vector<const Token *> &typeParametersInDeclaration,
|
|
const std::string &newName,
|
|
bool copy)
|
|
{
|
|
std::list<ScopeInfo2> scopeInfo;
|
|
bool inTemplateDefinition = false;
|
|
const Token *startOfTemplateDeclaration = nullptr;
|
|
const Token *endOfTemplateDefinition = nullptr;
|
|
const Token * const templateDeclarationNameToken = templateDeclaration.nameToken;
|
|
const Token * const templateDeclarationToken = templateDeclaration.paramEnd;
|
|
const bool isClass = Token::Match(templateDeclaration.paramEnd->next(), "class|struct|union %name% <|{|:");
|
|
const bool isFunction = templateDeclarationNameToken->strAt(1) == "(" ||
|
|
(templateDeclarationNameToken->strAt(1) == "<" && templateDeclarationNameToken->next()->findClosingBracket()->strAt(1) == "(");
|
|
const bool isSpecialization = Token::Match(templateDeclaration.token, "template < >");
|
|
|
|
// add forward declarations
|
|
if (copy && isClass) {
|
|
templateDeclaration.token->insertToken(templateDeclarationToken->strAt(1), "", true);
|
|
templateDeclaration.token->insertToken(newName, "", true);
|
|
templateDeclaration.token->insertToken(";", "", true);
|
|
} else if (isFunction && (copy || (!copy && isSpecialization))) {
|
|
Token * dst = templateDeclaration.token;
|
|
bool isStatic = false;
|
|
std::string scope;
|
|
Token * start;
|
|
Token * end;
|
|
auto it = mTemplateForwardDeclarationsMap.find(dst);
|
|
if (it != mTemplateForwardDeclarationsMap.end()) {
|
|
dst = it->second;
|
|
const Token * temp1 = dst->tokAt(1)->findClosingBracket();
|
|
const Token * temp2 = temp1->tokAt(getTemplateNamePosition(temp1));
|
|
start = temp1->next();
|
|
end = temp2->linkAt(1)->next();
|
|
} else {
|
|
auto it2 = mTemplateUserSpecializationMap.find(dst);
|
|
if (it2 != mTemplateUserSpecializationMap.end()) {
|
|
dst = it2->second;
|
|
isStatic = dst->next()->findClosingBracket()->strAt(1) == "static";
|
|
const Token * temp = templateDeclarationNameToken;
|
|
while (Token::Match(temp->tokAt(-2), "%name% ::")) {
|
|
scope.insert(0, temp->strAt(-2) + " :: ");
|
|
temp = temp->tokAt(-2);
|
|
}
|
|
}
|
|
start = templateDeclarationToken->next();
|
|
if (templateDeclarationNameToken->strAt(1) == "(")
|
|
end = templateDeclarationNameToken->linkAt(1)->next();
|
|
else
|
|
end = templateDeclarationNameToken->next()->findClosingBracket()->linkAt(1)->next();
|
|
}
|
|
unsigned int typeindentlevel = 0;
|
|
while (!(typeindentlevel == 0 && Token::Match(end, ";|{|:"))) {
|
|
if (Token::Match(end, "<|(|{"))
|
|
++typeindentlevel;
|
|
else if (Token::Match(end, ">|)|}"))
|
|
--typeindentlevel;
|
|
end = end->next();
|
|
}
|
|
|
|
if (isStatic)
|
|
dst->insertToken("static", "", true);
|
|
|
|
std::map<const Token *, Token *> links;
|
|
while (start && start != end) {
|
|
unsigned int itype = 0;
|
|
while (itype < typeParametersInDeclaration.size() && typeParametersInDeclaration[itype]->str() != start->str())
|
|
++itype;
|
|
|
|
if (itype < typeParametersInDeclaration.size()) {
|
|
typeindentlevel = 0;
|
|
for (const Token *typetok = mTypesUsedInTemplateInstantiation[itype].token;
|
|
typetok && (typeindentlevel > 0 || !Token::Match(typetok, ",|>"));
|
|
typetok = typetok->next()) {
|
|
if (Token::simpleMatch(typetok, ". . .")) {
|
|
typetok = typetok->tokAt(2);
|
|
continue;
|
|
}
|
|
if (Token::Match(typetok, "%name% <") && templateParameters(typetok->next()) > 0)
|
|
++typeindentlevel;
|
|
else if (typeindentlevel > 0 && typetok->str() == ">")
|
|
--typeindentlevel;
|
|
dst->insertToken(typetok->str(), typetok->originalName(), true);
|
|
dst->previous()->isTemplateArg(true);
|
|
dst->previous()->isSigned(typetok->isSigned());
|
|
dst->previous()->isUnsigned(typetok->isUnsigned());
|
|
dst->previous()->isLong(typetok->isLong());
|
|
}
|
|
} else {
|
|
if (isSpecialization && !copy && !scope.empty() && Token::Match(start, (scope + templateDeclarationNameToken->str()).c_str())) {
|
|
// skip scope
|
|
while (start->strAt(1) != templateDeclarationNameToken->str())
|
|
start = start->next();
|
|
} else if (start->str() == templateDeclarationNameToken->str()) {
|
|
dst->insertToken(newName, "", true);
|
|
if (start->strAt(1) == "<")
|
|
start = start->next()->findClosingBracket();
|
|
} else {
|
|
// check if type is a template
|
|
if (start->strAt(1) == "<") {
|
|
// get the instantiated name
|
|
Token * closing = start->next()->findClosingBracket();
|
|
std::string name;
|
|
const Token * type = start;
|
|
while (type && type != closing->next()) {
|
|
if (!name.empty())
|
|
name += " ";
|
|
name += type->str();
|
|
type = type->next();
|
|
}
|
|
// check if type is instantiated
|
|
for (const auto & inst : mTemplateInstantiations) {
|
|
if (Token::simpleMatch(inst.nameToken, name.c_str())) {
|
|
// use the instantiated name
|
|
dst->insertToken(name, "", true);
|
|
start = closing;
|
|
break;
|
|
}
|
|
}
|
|
// just copy the token if it wasn't instantiated
|
|
if (start != closing)
|
|
dst->insertToken(start->str(), "", true);
|
|
} else
|
|
dst->insertToken(start->str(), "", true);
|
|
}
|
|
if (start->link()) {
|
|
if (Token::Match(start, "[|{|(")) {
|
|
links[start->link()] = dst->previous();
|
|
} else if (Token::Match(start, "]|}|)")) {
|
|
Token::createMutualLinks(links[start], dst->previous());
|
|
links.erase(start);
|
|
}
|
|
}
|
|
}
|
|
|
|
start = start->next();
|
|
}
|
|
dst->insertToken(";", "", true);
|
|
}
|
|
|
|
if (copy && (isClass || isFunction)) {
|
|
// check if this is an explicit instantiation
|
|
Token * start = templateInstantiation.token;
|
|
while (start && !Token::Match(start->previous(), "}|;|extern"))
|
|
start = start->previous();
|
|
if (Token::Match(start, "template !!<")) {
|
|
if (start->strAt(-1) == "extern")
|
|
start = start->previous();
|
|
mExplicitInstantiationsToDelete.emplace_back(start, "", "", nullptr);
|
|
}
|
|
}
|
|
|
|
for (Token *tok3 = mTokenList.front(); tok3; tok3 = tok3 ? tok3->next() : nullptr) {
|
|
if (Token::Match(tok3, "}|namespace|class|struct|union")) {
|
|
setScopeInfo(tok3, &scopeInfo);
|
|
continue;
|
|
}
|
|
if (inTemplateDefinition) {
|
|
if (!endOfTemplateDefinition && tok3->str() == "{")
|
|
endOfTemplateDefinition = tok3->link();
|
|
if (tok3 == endOfTemplateDefinition) {
|
|
inTemplateDefinition = false;
|
|
startOfTemplateDeclaration = nullptr;
|
|
}
|
|
}
|
|
|
|
if (tok3->str()=="template") {
|
|
if (tok3->next() && tok3->next()->str()=="<") {
|
|
std::vector<const Token *> localTypeParametersInDeclaration;
|
|
getTemplateParametersInDeclaration(tok3->tokAt(2), localTypeParametersInDeclaration);
|
|
if (localTypeParametersInDeclaration.size() != typeParametersInDeclaration.size())
|
|
inTemplateDefinition = false; // Partial specialization
|
|
else
|
|
inTemplateDefinition = true;
|
|
} else {
|
|
inTemplateDefinition = false; // Only template instantiation
|
|
}
|
|
startOfTemplateDeclaration = tok3;
|
|
}
|
|
if (Token::Match(tok3, "(|["))
|
|
tok3 = tok3->link();
|
|
|
|
// Start of template..
|
|
if (tok3 == templateDeclarationToken) {
|
|
tok3 = tok3->next();
|
|
if (tok3->str() == "static")
|
|
tok3 = tok3->next();
|
|
}
|
|
|
|
// member function implemented outside class definition
|
|
else if (inTemplateDefinition &&
|
|
Token::Match(tok3, "%name% <") &&
|
|
templateInstantiation.name == tok3->str() &&
|
|
instantiateMatch(tok3, typeParametersInDeclaration.size(), ":: ~| %name% (")) {
|
|
// there must be template..
|
|
bool istemplate = false;
|
|
Token * tok5 = nullptr; // start of function return type
|
|
for (Token *prev = tok3; prev && !Token::Match(prev, "[;{}]"); prev = prev->previous()) {
|
|
if (prev->str() == "template") {
|
|
istemplate = true;
|
|
tok5 = prev;
|
|
break;
|
|
}
|
|
}
|
|
if (!istemplate)
|
|
continue;
|
|
|
|
const Token *tok4 = tok3->next()->findClosingBracket();
|
|
while (tok4 && tok4->str() != "(")
|
|
tok4 = tok4->next();
|
|
if (!Tokenizer::isFunctionHead(tok4, ":{", true))
|
|
continue;
|
|
// find function return type start
|
|
tok5 = tok5->next()->findClosingBracket();
|
|
if (tok5)
|
|
tok5 = tok5->next();
|
|
// copy return type
|
|
while (tok5 && tok5 != tok3) {
|
|
// replace name if found
|
|
if (Token::Match(tok5, "%name% <") && tok5->str() == templateInstantiation.name) {
|
|
if (copy) {
|
|
if (!templateDeclaration.scope.empty() && tok5->strAt(-1) != "::")
|
|
addNamespace(templateDeclaration, tok5);
|
|
mTokenList.addtoken(newName, tok5->linenr(), tok5->fileIndex());
|
|
tok5 = tok5->next()->findClosingBracket();
|
|
} else {
|
|
tok5->str(newName);
|
|
eraseTokens(tok5, tok5->next()->findClosingBracket()->next());
|
|
}
|
|
} else if (copy)
|
|
mTokenList.addtoken(tok5, tok5->linenr(), tok5->fileIndex());
|
|
|
|
tok5 = tok5->next();
|
|
}
|
|
if (copy) {
|
|
if (!templateDeclaration.scope.empty() && tok3->strAt(-1) != "::")
|
|
addNamespace(templateDeclaration, tok3);
|
|
mTokenList.addtoken(newName, tok3->linenr(), tok3->fileIndex());
|
|
}
|
|
|
|
while (tok3 && tok3->str() != "::")
|
|
tok3 = tok3->next();
|
|
|
|
std::list<TokenAndName>::iterator it = std::find_if(mTemplateDeclarations.begin(),
|
|
mTemplateDeclarations.end(),
|
|
FindToken(startOfTemplateDeclaration));
|
|
if (it != mTemplateDeclarations.end())
|
|
mMemberFunctionsToDelete.push_back(*it);
|
|
}
|
|
|
|
// not part of template.. go on to next token
|
|
else
|
|
continue;
|
|
|
|
std::stack<Token *> brackets; // holds "(", "[" and "{" tokens
|
|
|
|
// FIXME use full name matching somehow
|
|
const std::string lastName = (templateInstantiation.name.find(' ') != std::string::npos) ? templateInstantiation.name.substr(templateInstantiation.name.rfind(' ')+1) : templateInstantiation.name;
|
|
|
|
|
|
for (; tok3; tok3 = tok3->next()) {
|
|
if (tok3->isName()) {
|
|
// search for this token in the type vector
|
|
unsigned int itype = 0;
|
|
while (itype < typeParametersInDeclaration.size() && typeParametersInDeclaration[itype]->str() != tok3->str())
|
|
++itype;
|
|
|
|
// replace type with given type..
|
|
if (itype < typeParametersInDeclaration.size()) {
|
|
unsigned int typeindentlevel = 0;
|
|
for (const Token *typetok = mTypesUsedInTemplateInstantiation[itype].token;
|
|
typetok && (typeindentlevel>0 || !Token::Match(typetok, ",|>"));
|
|
typetok = typetok->next()) {
|
|
if (Token::simpleMatch(typetok, ". . .")) {
|
|
typetok = typetok->tokAt(2);
|
|
continue;
|
|
}
|
|
if (Token::Match(typetok, "%name% <") && templateParameters(typetok->next()) > 0)
|
|
++typeindentlevel;
|
|
else if (typeindentlevel > 0 && typetok->str() == ">")
|
|
--typeindentlevel;
|
|
if (copy) {
|
|
mTokenList.addtoken(typetok, tok3->linenr(), tok3->fileIndex());
|
|
mTokenList.back()->isTemplateArg(true);
|
|
}
|
|
}
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// replace name..
|
|
if (tok3->str() == lastName) {
|
|
if (Token::simpleMatch(tok3->next(), "<")) {
|
|
Token *closingBracket = tok3->next()->findClosingBracket();
|
|
if (closingBracket) {
|
|
// replace multi token name with single token name
|
|
if (tok3 == templateDeclarationNameToken ||
|
|
Token::Match(tok3, newName.c_str())) {
|
|
if (copy) {
|
|
mTokenList.addtoken(newName, tok3->linenr(), tok3->fileIndex());
|
|
tok3 = closingBracket;
|
|
} else {
|
|
tok3->str(newName);
|
|
eraseTokens(tok3, closingBracket->next());
|
|
}
|
|
continue;
|
|
} else if (!templateDeclaration.scope.empty() &&
|
|
!alreadyHasNamespace(templateDeclaration, tok3) &&
|
|
closingBracket->strAt(1) != "(") {
|
|
if (copy)
|
|
addNamespace(templateDeclaration, tok3);
|
|
}
|
|
}
|
|
} else {
|
|
if (copy) {
|
|
// add namespace if necessary
|
|
if (!templateDeclaration.scope.empty() &&
|
|
(isClass ? tok3->strAt(1) != "(" : true)) {
|
|
addNamespace(templateDeclaration, tok3);
|
|
}
|
|
mTokenList.addtoken(newName, tok3->linenr(), tok3->fileIndex());
|
|
} else if (!Token::Match(tok3->next(), ":|{"))
|
|
tok3->str(newName);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// copy
|
|
if (copy)
|
|
mTokenList.addtoken(tok3, tok3->linenr(), tok3->fileIndex());
|
|
|
|
if (Token::Match(tok3, "%type% <") && Token::Match(tok3->next()->findClosingBracket(), ">|>>")) {
|
|
const Token *closingBracket = tok3->next()->findClosingBracket();
|
|
if (Token::simpleMatch(closingBracket->next(), "&")) {
|
|
int num = 0;
|
|
const Token *par = tok3->next();
|
|
while (num < typeParametersInDeclaration.size() && par != closingBracket) {
|
|
const std::string pattern("[<,] " + typeParametersInDeclaration[num]->str() + " [,>]");
|
|
if (!Token::Match(par, pattern.c_str()))
|
|
break;
|
|
++num;
|
|
par = par->tokAt(2);
|
|
}
|
|
if (num < typeParametersInDeclaration.size() || par != closingBracket)
|
|
continue;
|
|
}
|
|
|
|
std::string name = tok3->str();
|
|
for (const Token *prev = tok3->tokAt(-2); Token::Match(prev, "%name% ::"); prev = prev->tokAt(-2))
|
|
name = prev->str() + " :: " + name;
|
|
mTemplateInstantiations.emplace_back(mTokenList.back(), getScopeName(scopeInfo), name, tok3);
|
|
}
|
|
|
|
// link() newly tokens manually
|
|
else if (copy) {
|
|
if (tok3->str() == "{") {
|
|
brackets.push(mTokenList.back());
|
|
} else if (tok3->str() == "(") {
|
|
brackets.push(mTokenList.back());
|
|
} else if (tok3->str() == "[") {
|
|
brackets.push(mTokenList.back());
|
|
} else if (tok3->str() == "}") {
|
|
assert(brackets.empty() == false && brackets.top()->str() == "{");
|
|
Token::createMutualLinks(brackets.top(), mTokenList.back());
|
|
if (tok3->strAt(1) == ";") {
|
|
const Token * tokSemicolon = tok3->next();
|
|
mTokenList.addtoken(tokSemicolon, tokSemicolon->linenr(), tokSemicolon->fileIndex());
|
|
}
|
|
brackets.pop();
|
|
if (brackets.empty()) {
|
|
inTemplateDefinition = false;
|
|
break;
|
|
}
|
|
} else if (tok3->str() == ")") {
|
|
assert(brackets.empty() == false && brackets.top()->str() == "(");
|
|
Token::createMutualLinks(brackets.top(), mTokenList.back());
|
|
brackets.pop();
|
|
} else if (tok3->str() == "]") {
|
|
assert(brackets.empty() == false && brackets.top()->str() == "[");
|
|
Token::createMutualLinks(brackets.top(), mTokenList.back());
|
|
brackets.pop();
|
|
}
|
|
}
|
|
}
|
|
|
|
assert(brackets.empty());
|
|
}
|
|
}
|
|
|
|
static bool isLowerThanLogicalAnd(const Token *lower)
|
|
{
|
|
return lower->isAssignmentOp() || Token::Match(lower, "}|;|(|[|]|)|,|?|:|%oror%|return|throw|case");
|
|
}
|
|
static bool isLowerThanOr(const Token* lower)
|
|
{
|
|
return isLowerThanLogicalAnd(lower) || lower->str() == "&&";
|
|
}
|
|
static bool isLowerThanXor(const Token* lower)
|
|
{
|
|
return isLowerThanOr(lower) || lower->str() == "|";
|
|
}
|
|
static bool isLowerThanAnd(const Token* lower)
|
|
{
|
|
return isLowerThanXor(lower) || lower->str() == "^";
|
|
}
|
|
static bool isLowerThanShift(const Token* lower)
|
|
{
|
|
return isLowerThanAnd(lower) || lower->str() == "&";
|
|
}
|
|
static bool isLowerThanPlusMinus(const Token* lower)
|
|
{
|
|
return isLowerThanShift(lower) || Token::Match(lower, "%comp%|<<|>>");
|
|
}
|
|
static bool isLowerThanMulDiv(const Token* lower)
|
|
{
|
|
return isLowerThanPlusMinus(lower) || Token::Match(lower, "+|-");
|
|
}
|
|
static bool isLowerEqualThanMulDiv(const Token* lower)
|
|
{
|
|
return isLowerThanMulDiv(lower) || Token::Match(lower, "[*/%]");
|
|
}
|
|
|
|
|
|
bool TemplateSimplifier::simplifyNumericCalculations(Token *tok)
|
|
{
|
|
bool ret = false;
|
|
// (1-2)
|
|
while (tok->tokAt(3) && tok->isNumber() && tok->tokAt(2)->isNumber()) { // %any% %num% %any% %num% %any%
|
|
const Token *before = tok->previous();
|
|
if (!before)
|
|
break;
|
|
const Token* op = tok->next();
|
|
const Token* after = tok->tokAt(3);
|
|
const std::string &num1 = op->previous()->str();
|
|
const std::string &num2 = op->next()->str();
|
|
if (Token::Match(before, "* %num% /") && (num2 != "0") && num1 == MathLib::multiply(num2, MathLib::divide(num1, num2))) {
|
|
// Division where result is a whole number
|
|
} else if (!((op->str() == "*" && (isLowerThanMulDiv(before) || before->str() == "*") && isLowerEqualThanMulDiv(after)) || // associative
|
|
(Token::Match(op, "[/%]") && isLowerThanMulDiv(before) && isLowerEqualThanMulDiv(after)) || // NOT associative
|
|
(Token::Match(op, "[+-]") && isLowerThanMulDiv(before) && isLowerThanMulDiv(after)) || // Only partially (+) associative, but handled later
|
|
(Token::Match(op, ">>|<<") && isLowerThanShift(before) && isLowerThanPlusMinus(after)) || // NOT associative
|
|
(op->str() == "&" && isLowerThanShift(before) && isLowerThanShift(after)) || // associative
|
|
(op->str() == "^" && isLowerThanAnd(before) && isLowerThanAnd(after)) || // associative
|
|
(op->str() == "|" && isLowerThanXor(before) && isLowerThanXor(after)) || // associative
|
|
(op->str() == "&&" && isLowerThanOr(before) && isLowerThanOr(after)) ||
|
|
(op->str() == "||" && isLowerThanLogicalAnd(before) && isLowerThanLogicalAnd(after))))
|
|
break;
|
|
|
|
// Don't simplify "%num% / 0"
|
|
if (Token::Match(op, "[/%] 0"))
|
|
break;
|
|
|
|
// Integer operations
|
|
if (Token::Match(op, ">>|<<|&|^|%or%")) {
|
|
// Don't simplify if operand is negative, shifting with negative
|
|
// operand is UB. Bitmasking with negative operand is implementation
|
|
// defined behaviour.
|
|
if (MathLib::isNegative(num1) || MathLib::isNegative(num2))
|
|
break;
|
|
|
|
const MathLib::value v1(num1);
|
|
const MathLib::value v2(num2);
|
|
|
|
if (!v1.isInt() || !v2.isInt())
|
|
break;
|
|
|
|
switch (op->str()[0]) {
|
|
case '<':
|
|
tok->str((v1 << v2).str());
|
|
break;
|
|
case '>':
|
|
tok->str((v1 >> v2).str());
|
|
break;
|
|
case '&':
|
|
tok->str((v1 & v2).str());
|
|
break;
|
|
case '|':
|
|
tok->str((v1 | v2).str());
|
|
break;
|
|
case '^':
|
|
tok->str((v1 ^ v2).str());
|
|
break;
|
|
};
|
|
}
|
|
|
|
// Logical operations
|
|
else if (Token::Match(op, "%oror%|&&")) {
|
|
const bool op1 = !MathLib::isNullValue(num1);
|
|
const bool op2 = !MathLib::isNullValue(num2);
|
|
const bool result = (op->str() == "||") ? (op1 || op2) : (op1 && op2);
|
|
tok->str(result ? "1" : "0");
|
|
}
|
|
|
|
else if (Token::Match(tok->previous(), "- %num% - %num%"))
|
|
tok->str(MathLib::add(num1, num2));
|
|
else if (Token::Match(tok->previous(), "- %num% + %num%"))
|
|
tok->str(MathLib::subtract(num1, num2));
|
|
else {
|
|
try {
|
|
tok->str(MathLib::calculate(num1, num2, op->str()[0]));
|
|
} catch (InternalError &e) {
|
|
e.token = tok;
|
|
throw;
|
|
}
|
|
}
|
|
|
|
tok->deleteNext(2);
|
|
|
|
ret = true;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
// TODO: This is not the correct class for simplifyCalculations(), so it
|
|
// should be moved away.
|
|
bool TemplateSimplifier::simplifyCalculations(Token* frontToken)
|
|
{
|
|
bool ret = false;
|
|
if (!frontToken) {
|
|
frontToken = mTokenList.front();
|
|
}
|
|
for (Token *tok = frontToken; tok; tok = tok->next()) {
|
|
// Remove parentheses around variable..
|
|
// keep parentheses here: dynamic_cast<Fred *>(p);
|
|
// keep parentheses here: A operator * (int);
|
|
// keep parentheses here: int ( * ( * f ) ( ... ) ) (int) ;
|
|
// keep parentheses here: int ( * * ( * compilerHookVector ) (void) ) ( ) ;
|
|
// keep parentheses here: operator new [] (size_t);
|
|
// keep parentheses here: Functor()(a ... )
|
|
// keep parentheses here: ) ( var ) ;
|
|
if ((Token::Match(tok->next(), "( %name% ) ;|)|,|]") ||
|
|
(Token::Match(tok->next(), "( %name% ) %cop%") && (tok->tokAt(2)->varId()>0 || !Token::Match(tok->tokAt(4), "[*&+-~]")))) &&
|
|
!tok->isName() &&
|
|
tok->str() != ">" &&
|
|
tok->str() != ")" &&
|
|
tok->str() != "]") {
|
|
tok->deleteNext();
|
|
tok = tok->next();
|
|
tok->deleteNext();
|
|
ret = true;
|
|
}
|
|
|
|
if (Token::Match(tok->previous(), "(|&&|%oror% %char% %comp% %num% &&|%oror%|)")) {
|
|
tok->str(MathLib::toString(MathLib::toLongNumber(tok->str())));
|
|
}
|
|
|
|
if (tok->isNumber()) {
|
|
if (simplifyNumericCalculations(tok)) {
|
|
ret = true;
|
|
Token *prev = tok->tokAt(-2);
|
|
while (prev && simplifyNumericCalculations(prev)) {
|
|
tok = prev;
|
|
prev = prev->tokAt(-2);
|
|
}
|
|
}
|
|
|
|
// Remove redundant conditions (0&&x) (1||x)
|
|
if (Token::Match(tok->previous(), "[(=,] 0 &&") ||
|
|
Token::Match(tok->previous(), "[(=,] 1 %oror%")) {
|
|
unsigned int par = 0;
|
|
const Token *tok2 = tok;
|
|
const bool andAnd = (tok->next()->str() == "&&");
|
|
for (; tok2; tok2 = tok2->next()) {
|
|
if (tok2->str() == "(" || tok2->str() == "[")
|
|
++par;
|
|
else if (tok2->str() == ")" || tok2->str() == "]") {
|
|
if (par == 0)
|
|
break;
|
|
--par;
|
|
} else if (par == 0 && isLowerThanLogicalAnd(tok2) && (andAnd || tok2->str() != "||"))
|
|
break;
|
|
}
|
|
if (tok2) {
|
|
eraseTokens(tok, tok2);
|
|
ret = true;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (tok->str() == "0") {
|
|
if ((Token::Match(tok->previous(), "[+-] 0 %cop%|;") && isLowerThanMulDiv(tok->next())) ||
|
|
(Token::Match(tok->previous(), "%or% 0 %cop%|;") && isLowerThanXor(tok->next()))) {
|
|
tok = tok->previous();
|
|
if (Token::Match(tok->tokAt(-4), "[;{}] %name% = %name% [+-|] 0 ;") &&
|
|
tok->strAt(-3) == tok->previous()->str()) {
|
|
tok = tok->tokAt(-4);
|
|
tok->deleteNext(5);
|
|
} else {
|
|
tok = tok->previous();
|
|
tok->deleteNext(2);
|
|
}
|
|
ret = true;
|
|
} else if (Token::Match(tok->previous(), "[=([,] 0 [+|]") ||
|
|
Token::Match(tok->previous(), "return|case 0 [+|]")) {
|
|
tok = tok->previous();
|
|
tok->deleteNext(2);
|
|
ret = true;
|
|
} else if (Token::Match(tok->previous(), "[=[(,] 0 * %name%|%num% ,|]|)|;|=|%cop%") ||
|
|
Token::Match(tok->previous(), "[=[(,] 0 * (") ||
|
|
Token::Match(tok->previous(), "return|case 0 *|&& %name%|%num% ,|:|;|=|%cop%") ||
|
|
Token::Match(tok->previous(), "return|case 0 *|&& (")) {
|
|
tok->deleteNext();
|
|
if (tok->next()->str() == "(")
|
|
eraseTokens(tok, tok->next()->link());
|
|
tok->deleteNext();
|
|
ret = true;
|
|
} else if (Token::Match(tok->previous(), "[=[(,] 0 && *|& %any% ,|]|)|;|=|%cop%") ||
|
|
Token::Match(tok->previous(), "return|case 0 && *|& %any% ,|:|;|=|%cop%")) {
|
|
tok->deleteNext();
|
|
tok->deleteNext();
|
|
if (tok->next()->str() == "(")
|
|
eraseTokens(tok, tok->next()->link());
|
|
tok->deleteNext();
|
|
ret = true;
|
|
}
|
|
}
|
|
|
|
if (tok->str() == "1") {
|
|
if (Token::Match(tok->previous(), "[=[(,] 1 %oror% %any% ,|]|)|;|=|%cop%") ||
|
|
Token::Match(tok->previous(), "return|case 1 %oror% %any% ,|:|;|=|%cop%")) {
|
|
tok->deleteNext();
|
|
if (tok->next()->str() == "(")
|
|
eraseTokens(tok, tok->next()->link());
|
|
tok->deleteNext();
|
|
ret = true;
|
|
} else if (Token::Match(tok->previous(), "[=[(,] 1 %oror% *|& %any% ,|]|)|;|=|%cop%") ||
|
|
Token::Match(tok->previous(), "return|case 1 %oror% *|& %any% ,|:|;|=|%cop%")) {
|
|
tok->deleteNext();
|
|
tok->deleteNext();
|
|
if (tok->next()->str() == "(")
|
|
eraseTokens(tok, tok->next()->link());
|
|
tok->deleteNext();
|
|
ret = true;
|
|
}
|
|
}
|
|
|
|
if (Token::Match(tok->tokAt(-2), "%any% * 1") || Token::Match(tok->previous(), "%any% 1 *")) {
|
|
tok = tok->previous();
|
|
if (tok->str() == "*")
|
|
tok = tok->previous();
|
|
tok->deleteNext(2);
|
|
ret = true;
|
|
}
|
|
|
|
// Remove parentheses around number..
|
|
if (Token::Match(tok->tokAt(-2), "%op%|< ( %num% )") && tok->strAt(-2) != ">") {
|
|
tok = tok->previous();
|
|
tok->deleteThis();
|
|
tok->deleteNext();
|
|
ret = true;
|
|
}
|
|
|
|
if (Token::Match(tok->previous(), "( 0 [|+]") ||
|
|
Token::Match(tok->previous(), "[|+-] 0 )")) {
|
|
tok = tok->previous();
|
|
if (Token::Match(tok, "[|+-]"))
|
|
tok = tok->previous();
|
|
tok->deleteNext(2);
|
|
ret = true;
|
|
}
|
|
|
|
if (Token::Match(tok, "%num% %comp% %num%") &&
|
|
MathLib::isInt(tok->str()) &&
|
|
MathLib::isInt(tok->strAt(2))) {
|
|
if (Token::Match(tok->previous(), "(|&&|%oror%") && Token::Match(tok->tokAt(3), ")|&&|%oror%|?")) {
|
|
const MathLib::bigint op1(MathLib::toLongNumber(tok->str()));
|
|
const std::string &cmp(tok->next()->str());
|
|
const MathLib::bigint op2(MathLib::toLongNumber(tok->strAt(2)));
|
|
|
|
std::string result;
|
|
|
|
if (cmp == "==")
|
|
result = (op1 == op2) ? "1" : "0";
|
|
else if (cmp == "!=")
|
|
result = (op1 != op2) ? "1" : "0";
|
|
else if (cmp == "<=")
|
|
result = (op1 <= op2) ? "1" : "0";
|
|
else if (cmp == ">=")
|
|
result = (op1 >= op2) ? "1" : "0";
|
|
else if (cmp == "<")
|
|
result = (op1 < op2) ? "1" : "0";
|
|
else
|
|
result = (op1 > op2) ? "1" : "0";
|
|
|
|
tok->str(result);
|
|
tok->deleteNext(2);
|
|
ret = true;
|
|
tok = tok->previous();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
const Token * TemplateSimplifier::getTemplateParametersInDeclaration(
|
|
const Token * tok,
|
|
std::vector<const Token *> & typeParametersInDeclaration)
|
|
{
|
|
typeParametersInDeclaration.clear();
|
|
for (; tok && tok->str() != ">"; tok = tok->next()) {
|
|
if (Token::Match(tok, "%name% ,|>|="))
|
|
typeParametersInDeclaration.push_back(tok);
|
|
}
|
|
return tok;
|
|
}
|
|
|
|
bool TemplateSimplifier::matchSpecialization(
|
|
const Token *templateDeclarationNameToken,
|
|
const Token *templateInstantiationNameToken,
|
|
const std::list<const Token *> & specializations)
|
|
{
|
|
// Is there a matching specialization?
|
|
for (std::list<const Token *>::const_iterator it = specializations.begin(); it != specializations.end(); ++it) {
|
|
if (!Token::Match(*it, "%name% <"))
|
|
continue;
|
|
const Token *startToken = (*it);
|
|
while (startToken->previous() && !Token::Match(startToken->previous(), "[;{}]"))
|
|
startToken = startToken->previous();
|
|
if (!Token::simpleMatch(startToken, "template <"))
|
|
continue;
|
|
std::vector<const Token *> templateParameters;
|
|
getTemplateParametersInDeclaration(startToken->tokAt(2), templateParameters);
|
|
|
|
const Token *instToken = templateInstantiationNameToken->tokAt(2);
|
|
const Token *declToken = (*it)->tokAt(2);
|
|
const Token * const endToken = (*it)->next()->findClosingBracket();
|
|
while (declToken != endToken) {
|
|
if (declToken->str() != instToken->str()) {
|
|
int nr = 0;
|
|
while (nr < templateParameters.size() && templateParameters[nr]->str() != declToken->str())
|
|
++nr;
|
|
|
|
if (nr == templateParameters.size())
|
|
break;
|
|
}
|
|
declToken = declToken->next();
|
|
instToken = instToken->next();
|
|
}
|
|
|
|
if (declToken == endToken && instToken->str() == ">") {
|
|
// specialization matches.
|
|
return templateDeclarationNameToken == *it;
|
|
}
|
|
}
|
|
|
|
// No specialization matches. Return true if the declaration is not a specialization.
|
|
return Token::Match(templateDeclarationNameToken, "%name% !!<");
|
|
}
|
|
|
|
std::string TemplateSimplifier::getNewName(
|
|
Token *tok2,
|
|
std::list<std::string> &typeStringsUsedInTemplateInstantiation)
|
|
{
|
|
std::string typeForNewName;
|
|
unsigned int indentlevel = 0;
|
|
for (Token *tok3 = tok2->tokAt(2); tok3 && (indentlevel > 0 || tok3->str() != ">"); tok3 = tok3->next()) {
|
|
// #2648 - unhandled parentheses => bail out
|
|
// #2721 - unhandled [ => bail out
|
|
if (Token::Match(tok3, "(|[")) {
|
|
typeForNewName.clear();
|
|
break;
|
|
}
|
|
if (!tok3->next()) {
|
|
typeForNewName.clear();
|
|
break;
|
|
}
|
|
if (Token::Match(tok3->tokAt(-2), "<|,|:: %name% <") && templateParameters(tok3) > 0)
|
|
++indentlevel;
|
|
else if (indentlevel > 0 && Token::Match(tok3, "> [,>]"))
|
|
--indentlevel;
|
|
if (indentlevel == 0 && Token::Match(tok3->previous(), "[<,]")) {
|
|
mTypesUsedInTemplateInstantiation.emplace_back(tok3, "", "", nullptr);
|
|
}
|
|
const bool constconst = tok3->str() == "const" && tok3->strAt(1) == "const";
|
|
if (!constconst) {
|
|
typeStringsUsedInTemplateInstantiation.push_back(tok3->str());
|
|
}
|
|
// add additional type information
|
|
if (!constconst && !Token::Match(tok3, "class|struct|enum")) {
|
|
if (tok3->isUnsigned())
|
|
typeForNewName += "unsigned";
|
|
else if (tok3->isSigned())
|
|
typeForNewName += "signed";
|
|
if (tok3->isLong())
|
|
typeForNewName += "long";
|
|
if (!typeForNewName.empty())
|
|
typeForNewName += ' ';
|
|
typeForNewName += tok3->str();
|
|
}
|
|
}
|
|
|
|
return typeForNewName;
|
|
}
|
|
|
|
bool TemplateSimplifier::simplifyTemplateInstantiations(
|
|
const TokenAndName &templateDeclaration,
|
|
const std::list<const Token *> &specializations,
|
|
const std::time_t maxtime,
|
|
std::set<std::string> &expandedtemplates)
|
|
{
|
|
// this variable is not used at the moment. The intention was to
|
|
// allow continuous instantiations until all templates has been expanded
|
|
//bool done = false;
|
|
|
|
// Contains tokens such as "T"
|
|
std::vector<const Token *> typeParametersInDeclaration;
|
|
getTemplateParametersInDeclaration(templateDeclaration.token->tokAt(2), typeParametersInDeclaration);
|
|
const bool printDebug = mSettings->debugwarnings;
|
|
const bool specialized = Token::simpleMatch(templateDeclaration.token, "template < >");
|
|
bool isfunc = false;
|
|
|
|
if (templateDeclaration.nameToken->strAt(1) == "(")
|
|
isfunc = true;
|
|
else if (templateDeclaration.nameToken->strAt(1) == "<") {
|
|
const Token *tok1 = templateDeclaration.nameToken->tokAt(1)->findClosingBracket();
|
|
if (tok1 && tok1->strAt(1) == "(")
|
|
isfunc = true;
|
|
}
|
|
|
|
// locate template usage..
|
|
std::string::size_type numberOfTemplateInstantiations = mTemplateInstantiations.size();
|
|
unsigned int recursiveCount = 0;
|
|
|
|
bool instantiated = false;
|
|
|
|
for (const TokenAndName &instantiation : mTemplateInstantiations) {
|
|
if (numberOfTemplateInstantiations != mTemplateInstantiations.size()) {
|
|
numberOfTemplateInstantiations = mTemplateInstantiations.size();
|
|
simplifyCalculations(instantiation.token);
|
|
++recursiveCount;
|
|
if (recursiveCount > 100) {
|
|
// bail out..
|
|
break;
|
|
}
|
|
}
|
|
|
|
// already simplified
|
|
if (!Token::Match(instantiation.token, "%name% <"))
|
|
continue;
|
|
|
|
if (instantiation.name != templateDeclaration.name)
|
|
continue;
|
|
|
|
if (!matchSpecialization(templateDeclaration.nameToken, instantiation.token, specializations))
|
|
continue;
|
|
|
|
Token * const tok2 = instantiation.token;
|
|
if (mErrorLogger && !mTokenList.getFiles().empty())
|
|
mErrorLogger->reportProgress(mTokenList.getFiles()[0], "TemplateSimplifier::simplifyTemplateInstantiations()", tok2->progressValue());
|
|
#ifdef MAXTIME
|
|
if (std::time(0) > maxtime)
|
|
return false;
|
|
#else
|
|
(void)maxtime;
|
|
#endif
|
|
assert(mTokenList.validateToken(tok2)); // that assertion fails on examples from #6021
|
|
|
|
const Token *startToken = tok2;
|
|
while (Token::Match(startToken->tokAt(-2), "%name% :: %name%") ||
|
|
Token::Match(startToken->tokAt(-2), "> :: %name%")) {
|
|
if (startToken->strAt(-2) == ">") {
|
|
const Token * tok3 = startToken->tokAt(-2)->findOpeningBracket();
|
|
if (tok3)
|
|
startToken = tok3->previous();
|
|
else
|
|
break;
|
|
} else
|
|
startToken = startToken->tokAt(-2);
|
|
}
|
|
|
|
if (Token::Match(startToken->previous(), ";|{|}|=|const") &&
|
|
(!specialized && !instantiateMatch(tok2, typeParametersInDeclaration.size(), isfunc ? "(" : "*|&| %name%")))
|
|
continue;
|
|
|
|
// New type..
|
|
mTypesUsedInTemplateInstantiation.clear();
|
|
std::list<std::string> typeStringsUsedInTemplateInstantiation;
|
|
std::string typeForNewName = getNewName(tok2, typeStringsUsedInTemplateInstantiation);
|
|
|
|
if (typeForNewName.empty() || (!typeParametersInDeclaration.empty() && typeParametersInDeclaration.size() != mTypesUsedInTemplateInstantiation.size())) {
|
|
if (printDebug && mErrorLogger) {
|
|
std::list<const Token *> callstack(1, tok2);
|
|
mErrorLogger->reportErr(ErrorLogger::ErrorMessage(callstack, &mTokenList, Severity::debug, "debug",
|
|
"Failed to instantiate template \"" + instantiation.name + "\". The checking continues anyway.", false));
|
|
}
|
|
if (typeForNewName.empty())
|
|
continue;
|
|
break;
|
|
}
|
|
|
|
// New classname/funcname..
|
|
const std::string newName(templateDeclaration.name + " < " + typeForNewName + " >");
|
|
|
|
if (expandedtemplates.find(newName) == expandedtemplates.end()) {
|
|
expandedtemplates.insert(newName);
|
|
expandTemplate(templateDeclaration, instantiation, typeParametersInDeclaration, newName, !specialized);
|
|
instantiated = true;
|
|
}
|
|
|
|
// Replace all these template usages..
|
|
replaceTemplateUsage(tok2, instantiation.name, typeStringsUsedInTemplateInstantiation, newName);
|
|
}
|
|
|
|
// process uninstantiated templates
|
|
const std::list<TokenAndName>::iterator it = std::find_if(mTemplateInstantiations.begin(),
|
|
mTemplateInstantiations.end(),
|
|
FindName(templateDeclaration.name));
|
|
|
|
// TODO: remove the specialized check and handle all uninstantiated templates someday.
|
|
if (it == mTemplateInstantiations.end() && specialized) {
|
|
simplifyCalculations(templateDeclaration.token);
|
|
|
|
Token * tok2 = const_cast<Token *>(templateDeclaration.nameToken);
|
|
if (mErrorLogger && !mTokenList.getFiles().empty())
|
|
mErrorLogger->reportProgress(mTokenList.getFiles()[0], "TemplateSimplifier::simplifyTemplateInstantiations()", tok2->progressValue());
|
|
#ifdef MAXTIME
|
|
if (std::time(0) > maxtime)
|
|
return false;
|
|
#else
|
|
(void)maxtime;
|
|
#endif
|
|
assert(mTokenList.validateToken(tok2)); // that assertion fails on examples from #6021
|
|
|
|
Token *startToken = tok2;
|
|
while (Token::Match(startToken->tokAt(-2), "%name% :: %name%") ||
|
|
Token::Match(startToken->tokAt(-2), "> :: %name%")) {
|
|
if (startToken->strAt(-2) == ">") {
|
|
const Token * tok3 = startToken->tokAt(-2)->findOpeningBracket();
|
|
if (tok3)
|
|
startToken = tok3->previous();
|
|
else
|
|
break;
|
|
} else
|
|
startToken = startToken->tokAt(-2);
|
|
}
|
|
|
|
if (Token::Match(startToken->previous(), ";|{|}|=|const") &&
|
|
(!specialized && !instantiateMatch(tok2, typeParametersInDeclaration.size(), isfunc ? "(" : "*|&| %name%")))
|
|
return false;
|
|
|
|
// already simplified
|
|
if (!Token::Match(tok2, "%name% <"))
|
|
return false;
|
|
|
|
if (!matchSpecialization(templateDeclaration.nameToken, tok2, specializations))
|
|
return false;
|
|
|
|
// New type..
|
|
mTypesUsedInTemplateInstantiation.clear();
|
|
std::list<std::string> typeStringsUsedInTemplateInstantiation;
|
|
std::string typeForNewName = getNewName(tok2, typeStringsUsedInTemplateInstantiation);
|
|
|
|
if (typeForNewName.empty()) {
|
|
if (printDebug && mErrorLogger) {
|
|
std::list<const Token *> callstack(1, tok2);
|
|
mErrorLogger->reportErr(ErrorLogger::ErrorMessage(callstack, &mTokenList, Severity::debug, "debug",
|
|
"Failed to instantiate template \"" + templateDeclaration.name + "\". The checking continues anyway.", false));
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// New classname/funcname..
|
|
const std::string newName(templateDeclaration.name + " < " + typeForNewName + " >");
|
|
if (expandedtemplates.find(newName) == expandedtemplates.end()) {
|
|
expandedtemplates.insert(newName);
|
|
expandTemplate(templateDeclaration, templateDeclaration, typeParametersInDeclaration, newName, false);
|
|
instantiated = true;
|
|
}
|
|
|
|
// Replace all these template usages..
|
|
replaceTemplateUsage(startToken, templateDeclaration.name, typeStringsUsedInTemplateInstantiation, newName);
|
|
}
|
|
|
|
// Template has been instantiated .. then remove the template declaration
|
|
return instantiated;
|
|
}
|
|
|
|
static bool matchTemplateParameters(const Token *nameTok, const std::list<std::string> &strings)
|
|
{
|
|
std::list<std::string>::const_iterator it = strings.begin();
|
|
const Token *tok = nameTok->tokAt(2);
|
|
while (tok && it != strings.end() && *it == tok->str()) {
|
|
tok = tok->next();
|
|
++it;
|
|
}
|
|
return it == strings.end() && tok && tok->str() == ">";
|
|
}
|
|
|
|
void TemplateSimplifier::replaceTemplateUsage(
|
|
Token * const instantiationToken,
|
|
const std::string &templateName,
|
|
const std::list<std::string> &typeStringsUsedInTemplateInstantiation,
|
|
const std::string &newName)
|
|
{
|
|
std::list<ScopeInfo2> scopeInfo;
|
|
std::list< std::pair<Token *, Token *> > removeTokens;
|
|
for (Token *nameTok = instantiationToken; nameTok; nameTok = nameTok->next()) {
|
|
if (Token::Match(nameTok, "}|namespace|class|struct|union")) {
|
|
setScopeInfo(nameTok, &scopeInfo);
|
|
continue;
|
|
}
|
|
if (!Token::Match(nameTok, "%name% <"))
|
|
continue;
|
|
if (!matchTemplateParameters(nameTok, typeStringsUsedInTemplateInstantiation))
|
|
continue;
|
|
|
|
// FIXME Proper name matching
|
|
const std::string lastName(templateName.find(' ') == std::string::npos ? templateName : templateName.substr(templateName.rfind(' ') + 1));
|
|
if (lastName != nameTok->str())
|
|
continue;
|
|
|
|
// match parameters
|
|
Token * tok2 = nameTok->tokAt(2);
|
|
unsigned int typeCountInInstantiation = 1U; // There is always at least one type
|
|
const Token *typetok = (!mTypesUsedInTemplateInstantiation.empty()) ? mTypesUsedInTemplateInstantiation[0].token : nullptr;
|
|
unsigned int indentlevel2 = 0; // indentlevel for tokgt
|
|
while (tok2 && (indentlevel2 > 0 || tok2->str() != ">")) {
|
|
if (tok2->str() == "<" && templateParameters(tok2) > 0)
|
|
++indentlevel2;
|
|
else if (indentlevel2 > 0 && Token::Match(tok2, "> [,>]"))
|
|
--indentlevel2;
|
|
else if (indentlevel2 == 0) {
|
|
if (tok2->str() != ",") {
|
|
if (!typetok ||
|
|
tok2->isUnsigned() != typetok->isUnsigned() ||
|
|
tok2->isSigned() != typetok->isSigned() ||
|
|
tok2->isLong() != typetok->isLong()) {
|
|
break;
|
|
}
|
|
|
|
typetok = typetok->next();
|
|
} else {
|
|
if (typeCountInInstantiation < mTypesUsedInTemplateInstantiation.size())
|
|
typetok = mTypesUsedInTemplateInstantiation[typeCountInInstantiation++].token;
|
|
else
|
|
typetok = nullptr;
|
|
}
|
|
}
|
|
tok2 = tok2->next();
|
|
}
|
|
|
|
if (!tok2)
|
|
break;
|
|
|
|
// matching template usage => replace tokens..
|
|
// Foo < int > => Foo<int>
|
|
if (tok2->str() == ">" && typeCountInInstantiation == mTypesUsedInTemplateInstantiation.size()) {
|
|
const Token * const nameTok1 = nameTok;
|
|
nameTok->str(newName);
|
|
|
|
for (Token *tok = nameTok1->next(); tok != tok2; tok = tok->next()) {
|
|
if (tok->isName() && !tok->templateSimplifierPointers().empty()) {
|
|
std::list<TokenAndName>::iterator ti;
|
|
for (ti = mTemplateInstantiations.begin(); ti != mTemplateInstantiations.end();) {
|
|
if (ti->token == tok) {
|
|
mTemplateInstantiations.erase(ti++);
|
|
break;
|
|
} else {
|
|
++ti;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
removeTokens.emplace_back(nameTok, tok2->next());
|
|
}
|
|
|
|
nameTok = tok2;
|
|
}
|
|
while (!removeTokens.empty()) {
|
|
eraseTokens(removeTokens.back().first, removeTokens.back().second);
|
|
removeTokens.pop_back();
|
|
}
|
|
}
|
|
|
|
static std::string getPathName(const TemplateSimplifier::TokenAndName & decl)
|
|
{
|
|
std::string name = decl.scope;
|
|
if (!name.empty())
|
|
name += " :: ";
|
|
if (decl.nameToken->strAt(-1) == "::") {
|
|
const Token * start = decl.nameToken;
|
|
|
|
while (Token::Match(start->tokAt(-2), "%name% ::"))
|
|
start = start->tokAt(-2);
|
|
|
|
while (start != decl.nameToken) {
|
|
name += (start->str() + " ");
|
|
start = start->next();
|
|
}
|
|
}
|
|
name += decl.name;
|
|
return name;
|
|
}
|
|
|
|
void TemplateSimplifier::getUserDefinedSpecializations()
|
|
{
|
|
// try to locate a matching declaration for each user defined specialization
|
|
for (auto & spec : mTemplateDeclarations) {
|
|
if (Token::Match(spec.token, "template < >")) {
|
|
std::string specName = getPathName(spec);
|
|
|
|
bool found = false;
|
|
for (auto & decl : mTemplateDeclarations) {
|
|
if (Token::Match(decl.token, "template < >"))
|
|
continue;
|
|
std::string declName = getPathName(decl);
|
|
|
|
// make sure the scopes and names match
|
|
if (specName == declName) {
|
|
// @todo make sure function parameters also match
|
|
mTemplateUserSpecializationMap[spec.token] = decl.token;
|
|
}
|
|
}
|
|
|
|
if (!found) {
|
|
for (auto & decl : mTemplateForwardDeclarations) {
|
|
std::string declName = getPathName(decl);
|
|
|
|
// make sure the scopes and names match
|
|
if (specName == declName) {
|
|
// @todo make sure function parameters also match
|
|
mTemplateUserSpecializationMap[spec.token] = decl.token;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void TemplateSimplifier::fixForwardDeclaredDefaultArgumentValues()
|
|
{
|
|
// try to locate a matching declaration for each forward declaration
|
|
for (const auto & forwardDecl : mTemplateForwardDeclarations) {
|
|
std::vector<const Token *> params1;
|
|
|
|
getTemplateParametersInDeclaration(forwardDecl.token->tokAt(2), params1);
|
|
|
|
for (auto & decl : mTemplateDeclarations) {
|
|
std::vector<const Token *> params2;
|
|
|
|
getTemplateParametersInDeclaration(decl.token->tokAt(2), params2);
|
|
|
|
// make sure the number of arguments match
|
|
if (params1.size() == params2.size()) {
|
|
std::string declName = getPathName(decl);
|
|
std::string forwardDeclName = getPathName(forwardDecl);
|
|
|
|
// make sure the scopes and names match
|
|
if (forwardDeclName == declName) {
|
|
// save forward declaration for lookup later
|
|
if ((decl.nameToken->strAt(1) == "(" && forwardDecl.nameToken->strAt(1) == "(") ||
|
|
(decl.nameToken->strAt(1) == "{" && forwardDecl.nameToken->strAt(1) == ";")) {
|
|
mTemplateForwardDeclarationsMap[decl.token] = forwardDecl.token;
|
|
}
|
|
|
|
for (size_t k = 0; k < params1.size(); k++) {
|
|
// copy default value to declaration if not present
|
|
if (params1[k]->strAt(1) == "=" && params2[k]->strAt(1) != "=") {
|
|
const_cast<Token *>(params2[k])->insertToken(params1[k]->strAt(2));
|
|
const_cast<Token *>(params2[k])->insertToken(params1[k]->strAt(1));
|
|
}
|
|
}
|
|
|
|
// update parameter end pointer
|
|
decl.paramEnd = decl.token->next()->findClosingBracket();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void TemplateSimplifier::simplifyTemplates(
|
|
const std::time_t maxtime,
|
|
bool &codeWithTemplates)
|
|
{
|
|
// TODO: 2 is not the ideal number of loops.
|
|
// We should loop until the number of declarations is 0 but we can't
|
|
// do that until we instantiate unintstantiated templates with their symbolic types.
|
|
// That will allow the uninstantiated template code to be removed from the symbol database.
|
|
// Unfortunately the template simplifier doesn't handle namespaces properly so
|
|
// the uninstantiated template code in the symbol database can't be removed until #8768
|
|
// is fixed.
|
|
for (int i = 0; i < 2; ++i) {
|
|
if (i) {
|
|
mTemplateDeclarations.clear();
|
|
mTemplateForwardDeclarations.clear();
|
|
mTemplateForwardDeclarationsMap.clear();
|
|
mTemplateUserSpecializationMap.clear();
|
|
mTemplateInstantiations.clear();
|
|
mInstantiatedTemplates.clear();
|
|
mExplicitInstantiationsToDelete.clear();
|
|
}
|
|
|
|
bool hasTemplates = getTemplateDeclarations();
|
|
|
|
if (i == 0) {
|
|
codeWithTemplates = hasTemplates;
|
|
if (hasTemplates) {
|
|
// There are templates..
|
|
// Remove "typename" unless used in template arguments..
|
|
for (Token *tok = mTokenList.front(); tok; tok = tok->next()) {
|
|
if (tok->str() == "typename")
|
|
tok->deleteThis();
|
|
|
|
if (Token::simpleMatch(tok, "template <")) {
|
|
while (tok && tok->str() != ">")
|
|
tok = tok->next();
|
|
if (!tok)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Make sure there is something to simplify.
|
|
if (mTemplateDeclarations.empty())
|
|
return;
|
|
|
|
// Copy default argument values from forward declaration to declaration
|
|
fixForwardDeclaredDefaultArgumentValues();
|
|
|
|
// Locate user defined specializations.
|
|
getUserDefinedSpecializations();
|
|
|
|
// Locate possible instantiations of templates..
|
|
getTemplateInstantiations();
|
|
|
|
// Template arguments with default values
|
|
useDefaultArgumentValues();
|
|
|
|
simplifyTemplateAliases();
|
|
|
|
std::set<std::string> expandedtemplates;
|
|
|
|
for (std::list<TokenAndName>::reverse_iterator iter1 = mTemplateDeclarations.rbegin(); iter1 != mTemplateDeclarations.rend(); ++iter1) {
|
|
// get specializations..
|
|
std::list<const Token *> specializations;
|
|
for (std::list<TokenAndName>::const_iterator iter2 = mTemplateDeclarations.begin(); iter2 != mTemplateDeclarations.end(); ++iter2) {
|
|
if (iter1->name == iter2->name)
|
|
specializations.push_back(iter2->nameToken);
|
|
}
|
|
|
|
const bool instantiated = simplifyTemplateInstantiations(
|
|
*iter1,
|
|
specializations,
|
|
maxtime,
|
|
expandedtemplates);
|
|
if (instantiated)
|
|
mInstantiatedTemplates.push_back(*iter1);
|
|
}
|
|
|
|
for (std::list<TokenAndName>::const_iterator it = mInstantiatedTemplates.begin(); it != mInstantiatedTemplates.end(); ++it) {
|
|
std::list<TokenAndName>::iterator decl;
|
|
for (decl = mTemplateDeclarations.begin(); decl != mTemplateDeclarations.end(); ++decl) {
|
|
if (decl->token == it->token)
|
|
break;
|
|
}
|
|
if (decl != mTemplateDeclarations.end()) {
|
|
if (Token::simpleMatch(it->token, "template < >")) {
|
|
// delete the "template < >"
|
|
Token * tok = it->token;
|
|
tok->deleteNext(2);
|
|
tok->deleteThis();
|
|
} else {
|
|
// remove forward declaration if found
|
|
auto it1 = mTemplateForwardDeclarationsMap.find(it->token);
|
|
if (it1 != mTemplateForwardDeclarationsMap.end())
|
|
removeTemplate(it1->second);
|
|
removeTemplate(it->token);
|
|
}
|
|
mTemplateDeclarations.erase(decl);
|
|
}
|
|
}
|
|
|
|
// remove out of line member functions
|
|
while (!mMemberFunctionsToDelete.empty()) {
|
|
const std::list<TokenAndName>::iterator it = std::find_if(mTemplateDeclarations.begin(),
|
|
mTemplateDeclarations.end(),
|
|
FindToken(mMemberFunctionsToDelete.begin()->token));
|
|
// multiple functions can share the same declaration so make sure it hasn't already been deleted
|
|
if (it != mTemplateDeclarations.end()) {
|
|
removeTemplate(it->token);
|
|
mTemplateDeclarations.erase(it);
|
|
}
|
|
mMemberFunctionsToDelete.erase(mMemberFunctionsToDelete.begin());
|
|
}
|
|
|
|
// remove explicit instantiations
|
|
for (size_t j = 0; j < mExplicitInstantiationsToDelete.size(); ++j) {
|
|
Token * start = mExplicitInstantiationsToDelete[j].token;
|
|
if (start) {
|
|
Token * end = start->next();
|
|
while (end && end->str() != ";")
|
|
end = end->next();
|
|
if (start->previous())
|
|
start = start->previous();
|
|
if (end->next())
|
|
end = end->next();
|
|
eraseTokens(start, end);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void TemplateSimplifier::syntaxError(const Token *tok)
|
|
{
|
|
throw InternalError(tok, "syntax error", InternalError::SYNTAX);
|
|
}
|