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unused private function: Handle 'embedded' function implementations better

This commit is contained in:
Daniel Marjamäki 2009-02-25 18:03:17 +00:00
parent 4849aaa7ee
commit dac1e91013
2 changed files with 61 additions and 30 deletions
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74
src/checkclass.cpp
View File

@ -476,7 +476,7 @@ void CheckClass::privateFunctions()
// The class implementation must be available..
const std::string classconstructor(classname + " :: " + classname);
if (tok1->fileIndex()>0 && !Token::findmatch(_tokenizer->tokens(), classconstructor.c_str()))
if (tok1->fileIndex() > 0 && !Token::findmatch(_tokenizer->tokens(), classconstructor.c_str()))
continue;
// Get private functions..
@ -521,58 +521,68 @@ void CheckClass::privateFunctions()
}
// Check that all private functions are used..
const std::string pattern_function(classname + " ::");
bool HasFuncImpl = false;
const Token *ftok = _tokenizer->tokens();
while (ftok)
{
ftok = Token::findmatch(ftok, pattern_function.c_str());
int numpar = 0;
while (ftok && !Token::Match(ftok, "[;{]"))
{
if (ftok->str() == "(")
++numpar;
else if (ftok->str() == ")")
--numpar;
ftok = ftok->next();
}
if (!ftok)
break;
if (ftok->str() != ";" && numpar == 0)
{
HasFuncImpl = true;
bool inclass = false;
indent_level = 0;
while (ftok)
const std::string pattern_function(classname + " ::");
for (const Token *ftok = _tokenizer->tokens(); ftok; ftok = ftok->next())
{
if (ftok->str() == "{")
++indent_level;
else if (ftok->str() == "}")
{
if (indent_level <= 1)
break;
if (indent_level > 0)
--indent_level;
if (indent_level == 0)
inclass = false;
}
else if (Token::Match(ftok, "%var% ("))
if (Token::Match(ftok, ("class " + classname + " :|{").c_str()))
{
indent_level = 0;
inclass = true;
}
// Check member class functions to see what functions are used..
if ((inclass && indent_level == 1 && Token::Match(ftok, ") const| {")) ||
(Token::Match(ftok, (classname + " :: %var% (").c_str())))
{
while (ftok && ftok->str() != ")")
ftok = ftok->next();
if (!ftok)
break;
if (!Token::Match(ftok, ") const| {"))
continue;
if (ftok->fileIndex() == 0)
HasFuncImpl = true;
// Parse function..
int indentlevel2 = 0;
for (const Token *tok2 = ftok; tok2; tok2 = tok2->next())
{
if (tok2->str() == "{")
++indentlevel2;
else if (tok2->str() == "}")
{
--indentlevel2;
if (indentlevel2 < 1)
break;
}
else if (Token::Match(tok2, "%var% ("))
{
// Remove function from FuncList
for (std::list<const Token *>::iterator it = FuncList.begin(); it != FuncList.end(); ++it)
{
if (ftok->str() == (*it)->str())
if (tok2->str() == (*it)->str())
{
FuncList.remove(*it);
break;
}
}
}
ftok = ftok->next();
}
}
if (ftok)
ftok = ftok->next();
}
while (HasFuncImpl && !FuncList.empty())

21
test/testunusedprivfunc.cpp
View File

@ -36,6 +36,7 @@ private:
void run()
{
TEST_CASE(test1);
TEST_CASE(test2);
// [ 2236547 ] False positive --style unused function, called via pointer
TEST_CASE(func_pointer);
@ -81,6 +82,26 @@ private:
}
void test2()
{
check("class A {\n"
"public:\n"
" A();\n"
"\n"
" void a() const\n"
" { b(); }\n"
"private:\n"
" void b( ) const\n"
" { }\n"
"};\n"
"\n"
"A::A()\n"
"{ }\n");
ASSERT_EQUALS(std::string(""), errout.str());
}