681 lines
23 KiB
C++
681 lines
23 KiB
C++
/*
|
|
* Cppcheck - A tool for static C/C++ code analysis
|
|
* Copyright (C) 2007-2010 Daniel Marjamäki and Cppcheck team.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "checkstl.h"
|
|
#include "tokenize.h"
|
|
#include "token.h"
|
|
|
|
|
|
|
|
// Register this check class (by creating a static instance of it)
|
|
namespace
|
|
{
|
|
CheckStl instance;
|
|
}
|
|
|
|
|
|
// Error message for bad iterator usage..
|
|
void CheckStl::invalidIteratorError(const Token *tok, const std::string &iteratorName)
|
|
{
|
|
reportError(tok, Severity::error, "invalidIterator1", "Invalid iterator: " + iteratorName);
|
|
}
|
|
|
|
void CheckStl::iteratorsError(const Token *tok, const std::string &container1, const std::string &container2)
|
|
{
|
|
reportError(tok, Severity::error, "iterators", "Same iterator is used with both " + container1 + " and " + container2);
|
|
}
|
|
|
|
// Error message used when dereferencing an iterator that has been erased..
|
|
void CheckStl::dereferenceErasedError(const Token *tok, const std::string &itername)
|
|
{
|
|
reportError(tok, Severity::error, "eraseDereference", "Dereferenced iterator '" + itername + "' has been erased");
|
|
}
|
|
|
|
void CheckStl::iterators()
|
|
{
|
|
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
|
|
{
|
|
if (!Token::Match(tok, "%var% = %var% . begin ( ) ;|+"))
|
|
continue;
|
|
|
|
const unsigned int iteratorId(tok->varId());
|
|
const unsigned int containerId(tok->tokAt(2)->varId());
|
|
if (iteratorId == 0 || containerId == 0)
|
|
continue;
|
|
|
|
bool validIterator = true;
|
|
for (const Token *tok2 = tok->tokAt(7); tok2; tok2 = tok2->next())
|
|
{
|
|
if (tok2->str() == "}")
|
|
break;
|
|
|
|
if (Token::Match(tok2, "%varid% != %var% . end ( )", iteratorId) && tok2->tokAt(2)->varId() != containerId)
|
|
{
|
|
iteratorsError(tok2, tok->strAt(2), tok2->strAt(2));
|
|
tok2 = tok2->tokAt(6);
|
|
}
|
|
else if (Token::Match(tok2, "%var% . insert|erase ( %varid% )|,", iteratorId))
|
|
{
|
|
if (!validIterator)
|
|
invalidIteratorError(tok2, tok2->strAt(4));
|
|
|
|
if (tok2->varId() != containerId && tok2->tokAt(5)->str() != ".")
|
|
{
|
|
// skip error message if container is a set..
|
|
if (tok2->varId() > 0)
|
|
{
|
|
const Token *decltok = Token::findmatch(_tokenizer->tokens(), "%varid%", tok2->varId());
|
|
while (decltok && !Token::Match(decltok, "[;{},(]"))
|
|
decltok = decltok->previous();
|
|
if (Token::Match(decltok, "%any% const| std :: set"))
|
|
continue; // No warning
|
|
}
|
|
|
|
// Show error message, mismatching iterator is used.
|
|
iteratorsError(tok2, tok->strAt(2), tok2->str());
|
|
}
|
|
else if (tok2->strAt(2) == std::string("erase"))
|
|
validIterator = false;
|
|
|
|
tok2 = tok2->tokAt(4);
|
|
}
|
|
else if (Token::Match(tok2, "%varid% = %var% . erase (", iteratorId))
|
|
{
|
|
validIterator = true;
|
|
tok2 = tok2->tokAt(5)->link();
|
|
if (!tok2)
|
|
break;
|
|
}
|
|
else if (!validIterator && Token::Match(tok2, "* %varid%", iteratorId))
|
|
{
|
|
dereferenceErasedError(tok2, tok2->strAt(1));
|
|
tok2 = tok2->next();
|
|
}
|
|
else if (!validIterator && Token::Match(tok2, "%varid% . %var%", iteratorId))
|
|
{
|
|
dereferenceErasedError(tok2, tok2->strAt(0));
|
|
tok2 = tok2->tokAt(2);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// Error message for bad iterator usage..
|
|
void CheckStl::mismatchingContainersError(const Token *tok)
|
|
{
|
|
reportError(tok, Severity::error, "mismatchingContainers", "mismatching containers");
|
|
}
|
|
|
|
void CheckStl::mismatchingContainers()
|
|
{
|
|
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
|
|
{
|
|
if (tok->str() != "std")
|
|
continue;
|
|
|
|
if (Token::Match(tok, "std :: find|find_if|count|transform|replace|replace_if|sort ( %var% . begin|rbegin ( ) , %var% . end|rend ( ) ,"))
|
|
{
|
|
if (tok->tokAt(4)->str() != tok->tokAt(10)->str())
|
|
{
|
|
mismatchingContainersError(tok);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void CheckStl::stlOutOfBounds()
|
|
{
|
|
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
|
|
{
|
|
if (!Token::simpleMatch(tok, "for ("))
|
|
continue;
|
|
|
|
unsigned int indent = 0;
|
|
for (const Token *tok2 = tok->tokAt(2); tok2; tok2 = tok2->next())
|
|
{
|
|
|
|
if (tok2->str() == "(")
|
|
++indent;
|
|
|
|
else if (tok2->str() == ")")
|
|
{
|
|
if (indent == 0)
|
|
break;
|
|
--indent;
|
|
}
|
|
|
|
if (Token::Match(tok2, "; %var% <= %var% . size ( ) ;"))
|
|
{
|
|
unsigned int indent2 = 0;
|
|
unsigned int numId = tok2->tokAt(1)->varId();
|
|
unsigned int varId = tok2->tokAt(3)->varId();
|
|
for (const Token *tok3 = tok2->tokAt(8); tok3; tok3 = tok3->next())
|
|
{
|
|
if (tok3->str() == "{")
|
|
++indent2;
|
|
else if (tok3->str() == "}")
|
|
{
|
|
if (indent2 <= 1)
|
|
break;
|
|
--indent2;
|
|
}
|
|
else if (tok3->varId() == varId)
|
|
{
|
|
if (Token::simpleMatch(tok3->next(), ". size ( )"))
|
|
break;
|
|
else if (Token::Match(tok3->next(), "[ %varid% ]", numId))
|
|
stlOutOfBoundsError(tok3, tok3->tokAt(2)->str(), tok3->str());
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Error message for bad iterator usage..
|
|
void CheckStl::stlOutOfBoundsError(const Token *tok, const std::string &num, const std::string &var)
|
|
{
|
|
reportError(tok, Severity::error, "stlOutOfBounds", "When " + num + "==" + var + ".size(), " + var + "[" + num + "] is out of bounds");
|
|
}
|
|
|
|
|
|
|
|
void CheckStl::erase()
|
|
{
|
|
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
|
|
{
|
|
if (Token::simpleMatch(tok, "for ("))
|
|
{
|
|
for (const Token *tok2 = tok->tokAt(2); tok2; tok2 = tok2->next())
|
|
{
|
|
if (tok2->str() == ";")
|
|
{
|
|
if (Token::Match(tok2, "; %var% !="))
|
|
{
|
|
const unsigned int varid = tok2->next()->varId();
|
|
if (varid > 0 && Token::findmatch(_tokenizer->tokens(), "> :: iterator %varid%", varid))
|
|
eraseCheckLoop(tok2->next());
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (Token::Match(tok2, "%var% = %var% . begin ( ) ; %var% != %var% . end ( ) ") &&
|
|
tok2->str() == tok2->tokAt(8)->str() &&
|
|
tok2->tokAt(2)->str() == tok2->tokAt(10)->str())
|
|
{
|
|
eraseCheckLoop(tok2);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (Token::Match(tok, "while ( %var% !="))
|
|
{
|
|
const unsigned int varid = tok->tokAt(2)->varId();
|
|
if (varid > 0 && Token::findmatch(_tokenizer->tokens(), "> :: iterator %varid%", varid))
|
|
eraseCheckLoop(tok->tokAt(2));
|
|
}
|
|
}
|
|
}
|
|
|
|
void CheckStl::eraseCheckLoop(const Token *it)
|
|
{
|
|
const Token *tok = it;
|
|
|
|
// Search for the start of the loop body..
|
|
int indentlevel = 1;
|
|
while (indentlevel > 0 && 0 != (tok = tok->next()))
|
|
{
|
|
if (tok->str() == "(")
|
|
++indentlevel;
|
|
else if (tok->str() == ")")
|
|
--indentlevel;
|
|
}
|
|
|
|
if (! Token::simpleMatch(tok, ") {"))
|
|
return;
|
|
|
|
// Parse loop..
|
|
// Error if it contains "erase(it)" but neither "break;", "=it" nor "it="
|
|
indentlevel = 0;
|
|
const Token *tok2 = 0;
|
|
while (0 != (tok = tok->next()))
|
|
{
|
|
if (tok->str() == "{")
|
|
++indentlevel;
|
|
else if (tok->str() == "}")
|
|
{
|
|
--indentlevel;
|
|
if (indentlevel <= 0)
|
|
break;
|
|
}
|
|
else if (Token::Match(tok, "break|return|goto") ||
|
|
Token::simpleMatch(tok, (it->str() + " =").c_str()) ||
|
|
Token::simpleMatch(tok, ("= " + it->str()).c_str()))
|
|
{
|
|
tok2 = 0;
|
|
break;
|
|
}
|
|
else if (Token::simpleMatch(tok, ("erase ( " + it->str() + " )").c_str()))
|
|
tok2 = tok;
|
|
}
|
|
|
|
// Write error message..
|
|
if (tok2)
|
|
eraseError(tok2);
|
|
}
|
|
|
|
|
|
// Error message for bad iterator usage..
|
|
void CheckStl::eraseError(const Token *tok)
|
|
{
|
|
reportError(tok, Severity::error, "erase", "Dangerous iterator usage. After erase the iterator is invalid so dereferencing it or comparing it with another iterator is invalid.");
|
|
}
|
|
|
|
|
|
|
|
void CheckStl::pushback()
|
|
{
|
|
// Pointer can become invalid after push_back or push_front..
|
|
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
|
|
{
|
|
if (Token::Match(tok, "%var% = & %var% ["))
|
|
{
|
|
const unsigned int pointerId(tok->varId());
|
|
const unsigned int containerId(tok->tokAt(3)->varId());
|
|
if (pointerId == 0 || containerId == 0)
|
|
continue;
|
|
|
|
int indent = 0;
|
|
bool invalidPointer = false;
|
|
for (const Token *tok2 = tok; indent >= 0 && tok2; tok2 = tok2->next())
|
|
{
|
|
if (tok2->str() == "{" || tok2->str() == "(")
|
|
++indent;
|
|
else if (tok2->str() == "}" || tok2->str() == ")")
|
|
{
|
|
if (indent == 0 && Token::simpleMatch(tok2, ") {"))
|
|
tok2 = tok2->next();
|
|
else
|
|
--indent;
|
|
}
|
|
|
|
// push_back on vector..
|
|
if (Token::Match(tok2, "%varid% . push_front|push_back", containerId))
|
|
invalidPointer = true;
|
|
|
|
// Using invalid pointer..
|
|
if (invalidPointer && tok2->varId() == pointerId)
|
|
{
|
|
if (tok2->previous()->str() == "*")
|
|
invalidPointerError(tok2, tok2->str());
|
|
else if (tok2->next()->str() == ".")
|
|
invalidPointerError(tok2, tok2->str());
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Iterator becomes invalid after push_back or push_front..
|
|
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
|
|
{
|
|
if (!Token::simpleMatch(tok, "vector <"))
|
|
continue;
|
|
|
|
// if iterator declaration inside for() loop
|
|
bool iteratorDeclaredInsideLoop = false;
|
|
if ((tok->tokAt(-2) && Token::simpleMatch(tok->tokAt(-2), "for (")) ||
|
|
(tok->tokAt(-4) && Token::simpleMatch(tok->tokAt(-4), "for ( std ::")))
|
|
{
|
|
iteratorDeclaredInsideLoop = true;
|
|
}
|
|
|
|
while (tok && tok->str() != ">")
|
|
tok = tok->next();
|
|
if (!tok)
|
|
break;
|
|
if (!Token::Match(tok, "> :: iterator|const_iterator %var% =|;"))
|
|
continue;
|
|
|
|
const unsigned int iteratorid(tok->tokAt(3)->varId());
|
|
if (iteratorid == 0)
|
|
continue;
|
|
|
|
if (iteratorDeclaredInsideLoop && tok->tokAt(4)->str() == "=")
|
|
{
|
|
// skip "> :: iterator|const_iterator"
|
|
tok = tok->tokAt(3);
|
|
}
|
|
|
|
unsigned int vectorid = 0;
|
|
int indent = 0;
|
|
std::string invalidIterator;
|
|
for (const Token *tok2 = tok; indent >= 0 && tok2; tok2 = tok2->next())
|
|
{
|
|
if (tok2->str() == "{" || tok2->str() == "(")
|
|
++indent;
|
|
else if (tok2->str() == "}" || tok2->str() == ")")
|
|
{
|
|
if (indent == 0 && Token::simpleMatch(tok2, ") {"))
|
|
tok2 = tok2->next();
|
|
else
|
|
--indent;
|
|
}
|
|
|
|
// Using push_back or push_front inside a loop..
|
|
if (Token::Match(tok2, "for ("))
|
|
{
|
|
tok2 = tok2->tokAt(2);
|
|
}
|
|
|
|
if (Token::Match(tok2, "%varid% = %var% . begin ( ) ; %varid% != %var% . end ( ) ; ++| %varid% ++| ) {", iteratorid))
|
|
{
|
|
const unsigned int varId(tok2->tokAt(2)->varId());
|
|
if (varId == 0)
|
|
continue;
|
|
|
|
const Token *pushbackTok = 0;
|
|
unsigned int indent3 = 0;
|
|
for (const Token *tok3 = tok2->tokAt(20); tok3; tok3 = tok3->next())
|
|
{
|
|
if (tok3->str() == "{")
|
|
++indent3;
|
|
else if (tok3->str() == "}")
|
|
{
|
|
if (indent3 <= 1)
|
|
break;
|
|
--indent3;
|
|
}
|
|
else if (tok3->str() == "break")
|
|
{
|
|
pushbackTok = 0;
|
|
break;
|
|
}
|
|
else if (Token::Match(tok3, "%varid% . push_front|push_back|insert (", varId))
|
|
{
|
|
pushbackTok = tok3->tokAt(2);
|
|
}
|
|
}
|
|
|
|
if (pushbackTok)
|
|
invalidIteratorError(pushbackTok, pushbackTok->str(), tok2->strAt(0));
|
|
}
|
|
|
|
// Assigning iterator..
|
|
if (Token::Match(tok2, "%varid% =", iteratorid))
|
|
{
|
|
if (Token::Match(tok2->tokAt(2), "%var% . begin|end|rbegin|rend ( )"))
|
|
{
|
|
vectorid = tok2->tokAt(2)->varId();
|
|
tok2 = tok2->tokAt(6);
|
|
}
|
|
else
|
|
{
|
|
vectorid = 0;
|
|
}
|
|
invalidIterator = "";
|
|
}
|
|
|
|
// push_back on vector..
|
|
if (vectorid > 0 && Token::Match(tok2, "%varid% . push_front|push_back|insert (", vectorid))
|
|
{
|
|
if (!invalidIterator.empty() && Token::Match(tok2->tokAt(2), "insert ( %varid% ,", iteratorid))
|
|
{
|
|
invalidIteratorError(tok2, invalidIterator, tok2->strAt(4));
|
|
break;
|
|
}
|
|
|
|
invalidIterator = tok2->strAt(2);
|
|
if (!iteratorDeclaredInsideLoop)
|
|
{
|
|
tok2 = tok2->tokAt(3)->link();
|
|
if (!tok2)
|
|
break;
|
|
}
|
|
}
|
|
|
|
else if (tok2->str() == "return")
|
|
{
|
|
invalidIterator.clear();
|
|
}
|
|
|
|
// Using invalid iterator..
|
|
if (!invalidIterator.empty())
|
|
{
|
|
if (Token::Match(tok2, "++|--|*|+|-|(|,|=|!= %varid%", iteratorid))
|
|
invalidIteratorError(tok2, invalidIterator, tok2->strAt(1));
|
|
if (Token::Match(tok2, "%varid% ++|--|+|-", iteratorid))
|
|
invalidIteratorError(tok2, invalidIterator, tok2->str());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// Error message for bad iterator usage..
|
|
void CheckStl::invalidIteratorError(const Token *tok, const std::string &func, const std::string &iterator_name)
|
|
{
|
|
reportError(tok, Severity::error, "invalidIterator2", "After " + func + ", the iterator '" + iterator_name + "' may be invalid");
|
|
}
|
|
|
|
|
|
// Error message for bad iterator usage..
|
|
void CheckStl::invalidPointerError(const Token *tok, const std::string &pointer_name)
|
|
{
|
|
reportError(tok, Severity::error, "invalidPointer", "Invalid pointer '" + pointer_name + "' after push_back / push_front");
|
|
}
|
|
|
|
|
|
|
|
|
|
void CheckStl::stlBoundries()
|
|
{
|
|
// containers (not the vector)..
|
|
static const char STL_CONTAINER_LIST[] = "bitset|deque|list|map|multimap|multiset|priority_queue|queue|set|stack|hash_map|hash_multimap|hash_set";
|
|
|
|
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
|
|
{
|
|
// Declaring iterator..
|
|
const std::string checkStr = (std::string(STL_CONTAINER_LIST) + " <");
|
|
if (Token::Match(tok, checkStr.c_str()))
|
|
{
|
|
const std::string container_name(tok->strAt(0));
|
|
while (tok && tok->str() != ">")
|
|
tok = tok->next();
|
|
if (!tok)
|
|
break;
|
|
|
|
if (Token::Match(tok, "> :: iterator|const_iterator %var% =|;"))
|
|
{
|
|
const unsigned int iteratorid(tok->tokAt(3)->varId());
|
|
if (iteratorid == 0)
|
|
continue;
|
|
|
|
// Using "iterator < ..." is not allowed
|
|
unsigned int indentlevel = 0;
|
|
for (const Token *tok2 = tok; tok2; tok2 = tok2->next())
|
|
{
|
|
if (tok2->str() == "{")
|
|
++indentlevel;
|
|
else if (tok2->str() == "}")
|
|
{
|
|
if (indentlevel == 0)
|
|
break;
|
|
--indentlevel;
|
|
}
|
|
else if (Token::Match(tok2, "!!* %varid% <", iteratorid))
|
|
{
|
|
stlBoundriesError(tok2, container_name);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Error message for bad boundry usage..
|
|
void CheckStl::stlBoundriesError(const Token *tok, const std::string &container_name)
|
|
{
|
|
reportError(tok, Severity::error, "stlBoundries", container_name + " range check should use != and not < since the order of the pointers isn't guaranteed");
|
|
}
|
|
|
|
|
|
|
|
void CheckStl::if_find()
|
|
{
|
|
if (!_settings->_checkCodingStyle)
|
|
return;
|
|
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
|
|
{
|
|
if (Token::Match(tok, "if ( !| %var% . find ( %any% ) )"))
|
|
{
|
|
// goto %var%
|
|
tok = tok->tokAt(2);
|
|
if (!tok->isName())
|
|
tok = tok->next();
|
|
|
|
const unsigned int varid = tok->varId();
|
|
if (varid > 0)
|
|
{
|
|
// Is the variable a std::string or STL container?
|
|
const Token * decl = Token::findmatch(_tokenizer->tokens(), "%varid%", varid);
|
|
while (decl && !Token::Match(decl, "[;{}(,]"))
|
|
decl = decl->previous();
|
|
|
|
decl = decl->next();
|
|
|
|
// stl container
|
|
if (Token::Match(decl, "const| std :: %var% < %type% > &|*| %varid%", varid))
|
|
if_findError(tok, false);
|
|
else if (Token::Match(decl, "const| std :: string &|*| %varid%", varid))
|
|
if_findError(tok, true);
|
|
}
|
|
}
|
|
|
|
if (Token::Match(tok, "if ( !| std :: find|find_if ("))
|
|
{
|
|
// goto '(' for the find
|
|
tok = tok->tokAt(4);
|
|
if (tok->isName())
|
|
tok = tok->next();
|
|
|
|
// check that result is checked properly
|
|
if (Token::simpleMatch(tok->link(), ") )"))
|
|
{
|
|
if_findError(tok, false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void CheckStl::if_findError(const Token *tok, bool str)
|
|
{
|
|
if (str)
|
|
reportError(tok, Severity::style, "stlIfStrFind", "Suspicious condition. string::find will return 0 if the string is found at position 0. If this is what you want to check then string::compare is a faster alternative because it doesn't scan through the string.");
|
|
else
|
|
reportError(tok, Severity::style, "stlIfFind", "Suspicious condition. The result of find is an iterator, but it is not properly checked.");
|
|
}
|
|
|
|
|
|
|
|
bool CheckStl::isStlContainer(const Token *tok)
|
|
{
|
|
// check if this token is defined
|
|
if (tok->varId())
|
|
{
|
|
// find where this token is defined
|
|
const Token *type = Token::findmatch(_tokenizer->tokens(), "%varid%", tok->varId());
|
|
|
|
// find where this tokens type starts
|
|
while (type->previous() && !Token::Match(type->previous(), "[;{,(]"))
|
|
type = type->previous();
|
|
|
|
// ignore "const"
|
|
if (type->str() == "const")
|
|
type = type->next();
|
|
|
|
// discard namespace if supplied
|
|
if (Token::simpleMatch(type, "std ::"))
|
|
type = type->next()->next();
|
|
|
|
// all possible stl containers
|
|
static const char STL_CONTAINER_LIST[] = "bitset|deque|list|map|multimap|multiset|priority_queue|queue|set|stack|hash_map|hash_multimap|hash_set|vector";
|
|
|
|
// container template string
|
|
const std::string checkStr(std::string(STL_CONTAINER_LIST) + " <");
|
|
|
|
// check if it's an stl template
|
|
if (Token::Match(type, checkStr.c_str()))
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void CheckStl::size()
|
|
{
|
|
if (!_settings->_checkCodingStyle || !_settings->inconclusive)
|
|
return;
|
|
|
|
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
|
|
{
|
|
if (Token::Match(tok, "%var% . size ( )"))
|
|
{
|
|
if (Token::Match(tok->tokAt(5), "==|!=|> 0"))
|
|
{
|
|
if (isStlContainer(tok))
|
|
sizeError(tok);
|
|
}
|
|
else if ((tok->tokAt(5)->str() == ")" ||
|
|
tok->tokAt(5)->str() == "&&" ||
|
|
tok->tokAt(5)->str() == "||" ||
|
|
tok->tokAt(5)->str() == "!") &&
|
|
(tok->tokAt(-1)->str() == "(" ||
|
|
tok->tokAt(-1)->str() == "&&" ||
|
|
tok->tokAt(-1)->str() == "||" ||
|
|
tok->tokAt(-1)->str() == "!"))
|
|
{
|
|
if (tok->tokAt(-1)->str() == "(" &&
|
|
tok->tokAt(5)->str() == ")")
|
|
{
|
|
// check for passing size to function call
|
|
if (Token::Match(tok->tokAt(-2), "if|while"))
|
|
{
|
|
if (isStlContainer(tok))
|
|
sizeError(tok);
|
|
}
|
|
}
|
|
else if (isStlContainer(tok))
|
|
sizeError(tok);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void CheckStl::sizeError(const Token *tok)
|
|
{
|
|
const std::string varname(tok ? tok->str().c_str() : "list");
|
|
const bool verbose(_settings ? _settings->_verbose : true);
|
|
reportError(tok, Severity::possibleStyle, "stlSize", "Use " + varname + ".empty() instead of " + varname + ".size() to guarantee fast code." + (verbose ? " size() can take linear time but empty() is guaranteed to take constant time." : ""));
|
|
}
|