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cppcheck/test/testclass.cpp

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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2009 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 "tokenize.h"
#include "checkclass.h"
#include "testsuite.h"
#include <sstream>
extern std::ostringstream errout;
class TestClass : public TestFixture
{
public:
TestClass() : TestFixture("TestClass")
{ }
private:
void run()
{
TEST_CASE(virtualDestructor1); // Base class not found => no error
TEST_CASE(virtualDestructor2); // Base class doesn't have a destructor
TEST_CASE(virtualDestructor3); // Base class has a destructor, but it's not virtual
TEST_CASE(virtualDestructor4); // Derived class doesn't have a destructor => no error
TEST_CASE(virtualDestructor5); // Derived class has empty destructor => no error
TEST_CASE(virtualDestructorProtected);
TEST_CASE(virtualDestructorInherited);
TEST_CASE(virtualDestructorTemplate);
TEST_CASE(uninitVar1);
TEST_CASE(uninitVar2);
TEST_CASE(uninitVar3);
TEST_CASE(uninitVarEnum);
TEST_CASE(uninitVarStream);
TEST_CASE(uninitVarTypedef);
TEST_CASE(uninitVarMemset);
TEST_CASE(uninitVarArray1);
TEST_CASE(uninitVarArray2);
TEST_CASE(uninitVarArray3);
TEST_CASE(uninitVarArray4);
TEST_CASE(uninitVarArray2D);
TEST_CASE(uninitMissingFuncDef);// can't expand function in constructor
TEST_CASE(privateCtor1); // If constructor is private..
TEST_CASE(privateCtor2); // If constructor is private..
TEST_CASE(function); // Function is not variable
TEST_CASE(uninitVarHeader1); // Class is defined in header
TEST_CASE(uninitVarHeader2); // Class is defined in header
TEST_CASE(uninitVarHeader3); // Class is defined in header
TEST_CASE(uninitVarPublished); // Borland C++: Variables in the published section are auto-initialized
TEST_CASE(uninitProperty); // Borland C++: No FP for properties
TEST_CASE(uninitOperator); // No FP about uninitialized 'operator[]'
TEST_CASE(uninitFunction1); // No FP when initialized in function
TEST_CASE(uninitFunction2); // No FP when initialized in function
TEST_CASE(noConstructor1);
TEST_CASE(noConstructor2);
TEST_CASE(noConstructor3);
TEST_CASE(noConstructor4);
TEST_CASE(operatorEq1);
TEST_CASE(operatorEqRetRefThis1);
TEST_CASE(operatorEqRetRefThis2); // ticket #1323
TEST_CASE(operatorEqRetRefThis3); // ticket #1405
TEST_CASE(operatorEqRetRefThis4); // ticket #1451
TEST_CASE(operatorEqRetRefThis5); // ticket #1550
TEST_CASE(operatorEqToSelf1); // single class
TEST_CASE(operatorEqToSelf2); // nested class
TEST_CASE(operatorEqToSelf3); // multiple inheritance
TEST_CASE(operatorEqToSelf4); // nested class with multiple inheritance
TEST_CASE(operatorEqToSelf5); // ticket # 1233
TEST_CASE(operatorEqToSelf6); // ticket # 1550
TEST_CASE(memsetOnStruct);
TEST_CASE(memsetOnClass);
TEST_CASE(this_subtraction); // warn about "this-x"
// can member function be made const
TEST_CASE(const1);
TEST_CASE(const2);
TEST_CASE(const3);
TEST_CASE(const4);
TEST_CASE(const5); // ticket #1482
TEST_CASE(const6); // ticket #1491
TEST_CASE(const7);
TEST_CASE(const8); // ticket #1517
TEST_CASE(const9); // ticket #1515
TEST_CASE(const10); // ticket #1522
TEST_CASE(const11); // ticket #1529
TEST_CASE(const12); // ticket #1552
TEST_CASE(const13); // ticket #1519
TEST_CASE(const14);
TEST_CASE(const15);
TEST_CASE(const16); // ticket #1551
TEST_CASE(constoperator); // operator< can often be const
TEST_CASE(constincdec); // increment/decrement => non-const
TEST_CASE(constReturnReference);
TEST_CASE(constDelete); // delete member variable => not const
TEST_CASE(constLPVOID); // a function that returns LPVOID can't be const
}
// Check the operator Equal
void checkOpertorEq(const char code[])
{
// Tokenize..
Tokenizer tokenizer;
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.simplifyTokenList();
// Clear the error log
errout.str("");
// Check..
Settings settings;
CheckClass checkClass(&tokenizer, &settings, this);
checkClass.operatorEq();
}
void operatorEq1()
{
checkOpertorEq("class A\n"
"{\n"
"public:\n"
" void goo() {}"
" void operator=(const A&);\n"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (style) 'operator=' should return something\n", errout.str());
checkOpertorEq("class A\n"
"{\n"
"private:\n"
" void operator=(const A&);\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkOpertorEq("class A\n"
"{\n"
" void operator=(const A&);\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkOpertorEq("class A\n"
"{\n"
"public:\n"
" void goo() {}\n"
"private:\n"
" void operator=(const A&);\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkOpertorEq("class A\n"
"{\n"
"public:\n"
" void operator=(const A&);\n"
"};\n"
"class B\n"
"{\n"
"public:\n"
" void operator=(const B&);\n"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (style) 'operator=' should return something\n"
"[test.cpp:9]: (style) 'operator=' should return something\n", errout.str());
checkOpertorEq("struct A\n"
"{\n"
" void operator=(const A&);\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (style) 'operator=' should return something\n", errout.str());
}
// Check that operator Equal returns reference to this
void checkOpertorEqRetRefThis(const char code[])
{
// Tokenize..
Tokenizer tokenizer;
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.simplifyTokenList();
// Clear the error log
errout.str("");
// Check..
Settings settings;
settings._checkCodingStyle = true;
CheckClass checkClass(&tokenizer, &settings, this);
checkClass.operatorEqRetRefThis();
}
void operatorEqRetRefThis1()
{
checkOpertorEqRetRefThis(
"class A\n"
"{\n"
"public:\n"
" A & operator=(const A &a) { return *this; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkOpertorEqRetRefThis(
"class A\n"
"{\n"
"public:\n"
" A & operator=(const A &a) { return a; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (style) 'operator=' should return reference to self\n", errout.str());
checkOpertorEqRetRefThis(
"class A\n"
"{\n"
"public:\n"
" A & operator=(const A &);\n"
"};\n"
"A & A::operator=(const A &a) { return *this; }\n");
ASSERT_EQUALS("", errout.str());
checkOpertorEqRetRefThis(
"class A\n"
"{\n"
"public:\n"
" A & operator=(const A &a);\n"
"};\n"
"A & A::operator=(const A &a) { return *this; }\n");
ASSERT_EQUALS("", errout.str());
checkOpertorEqRetRefThis(
"class A\n"
"{\n"
"public:\n"
" A & operator=(const A &)\n"
"};\n"
"A & A::operator=(const A &a) { return a; }\n");
ASSERT_EQUALS("[test.cpp:6]: (style) 'operator=' should return reference to self\n", errout.str());
checkOpertorEqRetRefThis(
"class A\n"
"{\n"
"public:\n"
" A & operator=(const A &a)\n"
"};\n"
"A & A::operator=(const A &a) { return a; }\n");
ASSERT_EQUALS("[test.cpp:6]: (style) 'operator=' should return reference to self\n", errout.str());
checkOpertorEqRetRefThis(
"class A\n"
"{\n"
"public:\n"
" class B\n"
" {\n"
" public:\n"
" B & operator=(const B &b) { return *this; }\n"
" };\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkOpertorEqRetRefThis(
"class A\n"
"{\n"
"public:\n"
" class B\n"
" {\n"
" public:\n"
" B & operator=(const B &b) { return b; }\n"
" };\n"
"};\n");
ASSERT_EQUALS("[test.cpp:7]: (style) 'operator=' should return reference to self\n", errout.str());
checkOpertorEqRetRefThis(
"class A\n"
"{\n"
"public:\n"
" class B\n"
" {\n"
" public:\n"
" B & operator=(const B &);\n"
" };\n"
"};\n"
"A::B & A::B::operator=(const A::B &b) { return *this; }\n");
ASSERT_EQUALS("", errout.str());
checkOpertorEqRetRefThis(
"class A\n"
"{\n"
"public:\n"
" class B\n"
" {\n"
" public:\n"
" B & operator=(const B &);\n"
" };\n"
"};\n"
"A::B & A::B::operator=(const A::B &b) { return b; }\n");
ASSERT_EQUALS("[test.cpp:10]: (style) 'operator=' should return reference to self\n", errout.str());
}
void operatorEqRetRefThis2()
{
// ticket # 1323
checkOpertorEqRetRefThis(
"class szp\n"
"{\n"
" szp &operator =(int *other) {};\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (style) 'operator=' should return reference to self\n", errout.str());
}
void operatorEqRetRefThis3()
{
// ticket # 1405
checkOpertorEqRetRefThis(
"class A {\n"
"public:\n"
" inline A &operator =(int *other) { return (*this;) };\n"
" inline A &operator =(long *other) { return (*this = 0;) };\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void operatorEqRetRefThis4()
{
// ticket # 1451
checkOpertorEqRetRefThis(
"P& P::operator = (const P& pc)\n"
"{\n"
" return (P&)(*this += pc);\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void operatorEqRetRefThis5()
{
// ticket # 1550
checkOpertorEqRetRefThis(
"class A {\n"
"public:\n"
" A & operator=(const A &a) { }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (style) 'operator=' should return reference to self\n", errout.str());
}
// Check that operator Equal checks for assignment to self
void checkOpertorEqToSelf(const char code[])
{
// Tokenize..
Tokenizer tokenizer;
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.simplifyTokenList();
// Clear the error log
errout.str("");
// Check..
Settings settings;
settings._checkCodingStyle = true;
settings._showAll = true;
CheckClass checkClass(&tokenizer, &settings, this);
checkClass.operatorEqToSelf();
}
void operatorEqToSelf1()
{
// this test has an assignment test but it is not needed
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" A & operator=(const A &a) { if (&a != this) { } return *this; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// this test doesn't have an assignment test but it is not needed
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" A & operator=(const A &a) { return *this; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// this test needs an assignment test and has it
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" char *s;\n"
" A & operator=(const A &a)\n"
" {\n"
" if (&a != this)\n"
" {\n"
" free(s);\n"
" s = strdup(a.s);\n"
" }\n"
" return *this;\n"
" }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// this class needs an assignment test but doesn't have it
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" char *s;\n"
" A & operator=(const A &a)\n"
" {\n"
" free(s);\n"
" s = strdup(a.s);\n"
" return *this;\n"
" }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:5]: (possible style) 'operator=' should check for assignment to self\n", errout.str());
// this test has an assignment test but doesn't need it
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" A & operator=(const A &);\n"
"};\n"
"A & A::operator=(const A &a) { if (&a != this) { } return *this; }\n");
ASSERT_EQUALS("", errout.str());
// this test doesn't have an assignment test but doesn't need it
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" A & operator=(const A &)\n"
"};\n"
"A & A::operator=(const A &a) { return *this; }\n");
ASSERT_EQUALS("", errout.str());
// this test needs an assignment test and has it
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" char *s;\n"
" A & operator=(const A &);\n"
"};\n"
"A & operator=(const A &a)\n"
"{\n"
" if (&a != this)\n"
" {\n"
" free(s);\n"
" s = strdup(a.s);\n"
" }\n"
" return *this;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
// this test needs an assignment test but doesnt have it
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" char *s;\n"
" A & operator=(const A &);\n"
"};\n"
"A & operator=(const A &a)\n"
"{\n"
" free(s);\n"
" s = strdup(a.s);\n"
" return *this;\n"
"}\n");
ASSERT_EQUALS("[test.cpp:7]: (possible style) 'operator=' should check for assignment to self\n", errout.str());
// ticket #1224
checkOpertorEqToSelf(
"const SubTree &SubTree::operator= (const SubTree &b)\n"
"{\n"
" CodeTree *oldtree = tree;\n"
" tree = new CodeTree(*b.tree);\n"
" delete oldtree;\n"
" return *this;\n"
"}\n"
"const SubTree &SubTree::operator= (const CodeTree &b)\n"
"{\n"
" CodeTree *oldtree = tree;\n"
" tree = new CodeTree(b);\n"
" delete oldtree;\n"
" return *this;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void operatorEqToSelf2()
{
// this test has an assignment test but doesn't need it
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" class B\n"
" {\n"
" public:\n"
" B & operator=(const B &b) { if (&b != this) { } return *this; }\n"
" };\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// this test doesn't have an assignment test but doesn't need it
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" class B\n"
" {\n"
" public:\n"
" B & operator=(const B &b) { return *this; }\n"
" };\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// this test needs an assignment test but has it
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" class B\n"
" {\n"
" public:\n"
" char *s;\n"
" B & operator=(const B &b)\n"
" {\n"
" if (&b != this)\n"
" {\n"
" }\n"
" return *this;\n"
" }\n"
" };\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// this test needs an assignment test but doesn't have it
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" class B\n"
" {\n"
" public:\n"
" char *s;\n"
" B & operator=(const B &b)\n"
" {\n"
" free(s);\n"
" s = strdup(b.s);\n"
" return *this;\n"
" }\n"
" };\n"
"};\n");
ASSERT_EQUALS("[test.cpp:8]: (possible style) 'operator=' should check for assignment to self\n", errout.str());
// this test has an assignment test but doesn't need it
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" class B\n"
" {\n"
" public:\n"
" B & operator=(const B &);\n"
" };\n"
"};\n"
"A::B & A::B::operator=(const A::B &b) { if (&b != this) { } return *this; }\n");
ASSERT_EQUALS("", errout.str());
// this test doesn't have an assignment test but doesn't need it
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" class B\n"
" {\n"
" public:\n"
" B & operator=(const B &);\n"
" };\n"
"};\n"
"A::B & A::B::operator=(const A::B &b) { return *this; }\n");
ASSERT_EQUALS("", errout.str());
// this test needs an assignment test and has it
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" class B\n"
" {\n"
" public:\n"
" char * s;\n"
" B & operator=(const B &);\n"
" };\n"
"};\n"
"A::B & A::B::operator=(const A::B &b)\n"
"{\n"
" if (&b != this)\n"
" {\n"
" free(s);\n"
" s = strdup(b.s);\n"
" }\n"
" return *this;\n"
" }\n");
ASSERT_EQUALS("", errout.str());
// this test needs an assignment test but doesn't have it
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" class B\n"
" {\n"
" public:\n"
" char * s;\n"
" B & operator=(const B &);\n"
" };\n"
"};\n"
"A::B & A::B::operator=(const A::B &b)\n"
"{\n"
" free(s);\n"
" s = strdup(b.s);\n"
" return *this;\n"
" }\n");
ASSERT_EQUALS("[test.cpp:11]: (possible style) 'operator=' should check for assignment to self\n", errout.str());
}
void operatorEqToSelf3()
{
// this test has multiple inheritance so there is no trivial way to test for self assignment but doesn't need it
checkOpertorEqToSelf(
"class A : public B, public C\n"
"{\n"
"public:\n"
" A & operator=(const A &a) { return *this; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// this test has multiple inheritance and needs an assignment test but there is no trivial way to test for it
checkOpertorEqToSelf(
"class A : public B, public C\n"
"{\n"
"public:\n"
" char *s;\n"
" A & operator=(const A &a)\n"
" {\n"
" free(s);\n"
" s = strdup(a.s);\n"
" return *this;\n"
" }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// this test has multiple inheritance so there is no trivial way to test for self assignment but doesn't need it
checkOpertorEqToSelf(
"class A : public B, public C\n"
"{\n"
"public:\n"
" A & operator=(const A &);\n"
"};\n"
"A & A::operator=(const A &a) { return *this; }\n");
ASSERT_EQUALS("", errout.str());
// this test has multiple inheritance and needs an assignment test but there is no trivial way to test for it
checkOpertorEqToSelf(
"class A : public B, public C\n"
"{\n"
"public:\n"
" char *s;\n"
" A & operator=(const A &);\n"
"};\n"
"A & A::operator=(const A &a)\n"
"{\n"
" free(s);\n"
" s = strdup(a.s);\n"
" return *this;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void operatorEqToSelf4()
{
// this test has multiple inheritance so there is no trivial way to test for self assignment but doesn't need it
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" class B : public C, public D\n"
" {\n"
" public:\n"
" B & operator=(const B &b) { return *this; }\n"
" };\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// this test has multiple inheritance and needs an assignment test but there is no trivial way to test for it
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" class B : public C, public D\n"
" {\n"
" public:\n"
" char * s;\n"
" B & operator=(const B &b)\n"
" {\n"
" free(s);\n"
" s = strdup(b.s);\n"
" return *this;\n"
" }\n"
" };\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// this test has multiple inheritance so there is no trivial way to test for self assignment but doesn't need it
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" class B : public C, public D\n"
" {\n"
" public:\n"
" B & operator=(const B &);\n"
" };\n"
"};\n"
"A::B & A::B::operator=(const A::B &b) { return *this; }\n");
ASSERT_EQUALS("", errout.str());
// this test has multiple inheritance and needs an assignment test but there is no trivial way to test for it
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" class B : public C, public D\n"
" {\n"
" public:\n"
" char * s;\n"
" B & operator=(const B &);\n"
" };\n"
"};\n"
"A::B & A::B::operator=(const A::B &b)\n"
"{\n"
" free(s);\n"
" s = strdup(b.s);\n"
" return *this;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void operatorEqToSelf5()
{
// ticket # 1233
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" char *s;\n"
" A & operator=(const A &a)\n"
" {\n"
" if((&a!=this))\n"
" {\n"
" free(s);\n"
" s = strdup(a.s);\n"
" }\n"
" return *this;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" char *s;\n"
" A & operator=(const A &a)\n"
" {\n"
" if(!(&a==this))\n"
" {\n"
" free(s);\n"
" s = strdup(a.s);\n"
" }\n"
" return *this;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" char *s;\n"
" A & operator=(const A &a)\n"
" {\n"
" if(false==(&a==this))\n"
" {\n"
" free(s);\n"
" s = strdup(a.s);\n"
" }\n"
" return *this;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" char *s;\n"
" A & operator=(const A &a)\n"
" {\n"
" if(true!=(&a==this))\n"
" {\n"
" free(s);\n"
" s = strdup(a.s);\n"
" }\n"
" return *this;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void operatorEqToSelf6()
{
// ticket # 1550
checkOpertorEqToSelf(
"class A\n"
"{\n"
"public:\n"
" char *s;\n"
" A & operator=(const A &a)\n"
" {\n"
" delete [] data;\n"
" data = new char[strlen(a.data) + 1];\n"
" strcpy(data, a.data);\n"
" return *this;\n"
" }\n"
"private:\n"
" char * data;\n"
"};");
ASSERT_EQUALS("[test.cpp:5]: (possible style) 'operator=' should check for assignment to self\n", errout.str());
}
// Check that base classes have virtual destructors
void checkVirtualDestructor(const char code[])
{
// Tokenize..
Tokenizer tokenizer;
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.simplifyTokenList();
// Clear the error log
errout.str("");
// Check..
Settings settings;
CheckClass checkClass(&tokenizer, &settings, this);
checkClass.virtualDestructor();
}
void virtualDestructor1()
{
// Base class not found
checkVirtualDestructor("class Derived : public Base { };");
ASSERT_EQUALS("", errout.str());
checkVirtualDestructor("class Derived : Base { };");
ASSERT_EQUALS("", errout.str());
}
void virtualDestructor2()
{
// Base class doesn't have a destructor
checkVirtualDestructor("class Base { };\n"
"class Derived : public Base { public: ~Derived() { (void)11; } };");
ASSERT_EQUALS("[test.cpp:1]: (error) Class Base which is inherited by class Derived does not have a virtual destructor\n", errout.str());
checkVirtualDestructor("class Base { };\n"
"class Derived : Base { public: ~Derived() { (void)11; } };");
ASSERT_EQUALS("", errout.str());
}
void virtualDestructor3()
{
// Base class has a destructor, but it's not virtual
checkVirtualDestructor("class Base { public: ~Base(); };\n"
"class Derived : public Base { public: ~Derived() { (void)11; } };");
ASSERT_EQUALS("[test.cpp:1]: (error) Class Base which is inherited by class Derived does not have a virtual destructor\n", errout.str());
checkVirtualDestructor("class Base { public: ~Base(); };\n"
"class Derived : private Fred, public Base { public: ~Derived() { (void)11; } };");
ASSERT_EQUALS("[test.cpp:1]: (error) Class Base which is inherited by class Derived does not have a virtual destructor\n", errout.str());
}
void virtualDestructor4()
{
// Derived class doesn't have a destructor => no error
checkVirtualDestructor("class Base { public: ~Base(); };\n"
"class Derived : public Base { };");
ASSERT_EQUALS("", errout.str());
checkVirtualDestructor("class Base { public: ~Base(); };\n"
"class Derived : private Fred, public Base { };");
ASSERT_EQUALS("", errout.str());
}
void virtualDestructor5()
{
// Derived class has empty destructor => no error
checkVirtualDestructor("class Base { public: ~Base(); };\n"
"class Derived : public Base { public: ~Derived() {} };");
ASSERT_EQUALS("", errout.str());
checkVirtualDestructor("class Base { public: ~Base(); };\n"
"class Derived : public Base { public: ~Derived(); }; Derived::~Derived() {}");
ASSERT_EQUALS("", errout.str());
}
void virtualDestructorProtected()
{
// Base class has protected destructor, it makes Base *p = new Derived(); fail
// during compilation time, so error is not possible. => no error
checkVirtualDestructor("class A\n"
"{\n"
"protected:\n"
" ~A() { }\n"
"};\n"
"\n"
"class B : public A\n"
"{\n"
"public:\n"
" ~B() { int a; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void virtualDestructorInherited()
{
// class A inherits virtual destructor from class Base -> no error
checkVirtualDestructor("class Base\n"
"{\n"
"public:\n"
"virtual ~Base() {}\n"
"};\n"
"class A : private Base\n"
"{\n"
"public:\n"
" ~A() { }\n"
"};\n"
"\n"
"class B : public A\n"
"{\n"
"public:\n"
" ~B() { int a; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// class A inherits virtual destructor from struct Base -> no error
// also notice that public is not given, but destructor is public, because
// we are using struct instead of class
checkVirtualDestructor("struct Base\n"
"{\n"
"virtual ~Base() {}\n"
"};\n"
"class A : public Base\n"
"{\n"
"};\n"
"\n"
"class B : public A\n"
"{\n"
"public:\n"
" ~B() { int a; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// Unknown Base class -> it could have virtual destructor, so ignore
checkVirtualDestructor("class A : private Base\n"
"{\n"
"public:\n"
" ~A() { }\n"
"};\n"
"\n"
"class B : public A\n"
"{\n"
"public:\n"
" ~B() { int a; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// Virtual destructor is inherited -> no error
checkVirtualDestructor("class Base2\n"
"{\n"
"virtual ~Base2() {}\n"
"};\n"
"class Base : public Base2\n"
"{\n"
"};\n"
"class A : private Base\n"
"{\n"
"public:\n"
" ~A() { }\n"
"};\n"
"\n"
"class B : public A\n"
"{\n"
"public:\n"
" ~B() { int a; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// class A doesn't inherit virtual destructor from class Base -> error
checkVirtualDestructor("class Base\n"
"{\n"
"public:\n"
"~Base() {}\n"
"};\n"
"class A : private Base\n"
"{\n"
"public:\n"
" ~A() { }\n"
"};\n"
"\n"
"class B : public A\n"
"{\n"
"public:\n"
" ~B() { int a; }\n"
"};\n");
TODO_ASSERT_EQUALS("[test.cpp:7]: (error) Class A which is inherited by class B does not have a virtual destructor\n", errout.str());
}
void virtualDestructorTemplate()
{
checkVirtualDestructor("template <typename T> class A\n"
"{\n"
" public:\n"
" virtual ~A(){}\n"
"};\n"
"template <typename T> class AA\n"
"{\n"
" public:\n"
" ~AA(){}\n"
"};\n"
"class B : public A<int>, public AA<double>\n"
"{\n"
" public:\n"
" ~B(){int a;}\n"
"};\n");
ASSERT_EQUALS("[test.cpp:7]: (error) Class AA<double> which is inherited by class B does not have a virtual destructor\n", errout.str());
}
void checkUninitVar(const char code[])
{
// Tokenize..
Tokenizer tokenizer;
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.simplifyTokenList();
// Clear the error log
errout.str("");
// Check..
Settings settings;
settings._showAll = true;
CheckClass checkClass(&tokenizer, &settings, this);
checkClass.constructors();
}
void uninitVar1()
{
checkUninitVar("enum ECODES\n"
"{\n"
" CODE_1 = 0,\n"
" CODE_2 = 1\n"
"};\n"
"\n"
"class Fred\n"
"{\n"
"public:\n"
" Fred() {}\n"
"\n"
"private:\n"
" ECODES _code;\n"
"};\n");
ASSERT_EQUALS("[test.cpp:10]: (style) Member variable not initialized in the constructor 'Fred::_code'\n", errout.str());
checkUninitVar("class A{};\n"
"\n"
"class B : public A\n"
"{\n"
"public:\n"
" B() {}\n"
"private:\n"
" float f;\n"
"};\n");
ASSERT_EQUALS("[test.cpp:6]: (style) Member variable not initialized in the constructor 'B::f'\n", errout.str());
checkUninitVar("class C\n"
"{\n"
" FILE *fp;\n"
"\n"
"public:\n"
" C(FILE *fp);\n"
"};\n"
"\n"
"C::C(FILE *fp) {\n"
" C::fp = fp;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void uninitVar2()
{
checkUninitVar("class John\n"
"{\n"
"public:\n"
" John() { (*this).i = 0; }\n"
"private:\n"
" int i;\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void uninitVar3()
{
checkUninitVar("class Foo\n"
"{\n"
"public:\n"
" Foo() { }\n"
"private:\n"
" struct Bar {\n"
" Bar();\n"
" };\n"
" Bar bars[2];\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void uninitVarArray1()
{
checkUninitVar("class John\n"
"{\n"
"public:\n"
" John() {}\n"
"\n"
"private:\n"
" char name[255];\n"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (style) Member variable not initialized in the constructor 'John::name'\n", errout.str());
checkUninitVar("class John\n"
"{\n"
"public:\n"
" John() {John::name[0] = '\\0';}\n"
"\n"
"private:\n"
" char name[255];\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkUninitVar("class John\n"
"{\n"
"public:\n"
" John() { strcpy(name, ""); }\n"
"\n"
"private:\n"
" char name[255];\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkUninitVar("class John\n"
"{\n"
"public:\n"
" John() { }\n"
"\n"
" double operator[](const unsigned long i);\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkUninitVar("class A;\n"
"class John\n"
"{\n"
"public:\n"
" John() { }\n"
" A a[5];\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkUninitVar("class A;\n"
"class John\n"
"{\n"
"public:\n"
" John() { }\n"
" A *a[5];\n"
"};\n");
ASSERT_EQUALS("[test.cpp:5]: (style) Member variable not initialized in the constructor 'John::a'\n", errout.str());
}
void uninitVarArray2()
{
checkUninitVar("class John\n"
"{\n"
"public:\n"
" John() { *name = 0; }\n"
"\n"
"private:\n"
" char name[255];\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void uninitVarArray3()
{
checkUninitVar("class John\n"
"{\n"
"private:\n"
" int a[100];\n"
" int b[100];\n"
"\n"
"public:\n"
" John()\n"
" {\n"
" memset(a,0,sizeof(a));\n"
" memset(b,0,sizeof(b));\n"
" }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void uninitVarArray4()
{
checkUninitVar("class John\n"
"{\n"
"private:\n"
" int a[100];\n"
" int b[100];\n"
"\n"
"public:\n"
" John()\n"
" {\n"
" if (snprintf(a,10,\"a\")) { }\n"
" if (snprintf(b,10,\"b\")) { }\n"
" }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void uninitVarArray2D()
{
checkUninitVar("class John\n"
"{\n"
"public:\n"
" John() { a[0][0] = 0; }\n"
"\n"
"private:\n"
" char a[2][2];\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void uninitMissingFuncDef()
{
// Unknown member function
checkUninitVar("class Fred\n"
"{\n"
"public:\n"
" Fred() { Init(); }\n"
"private:\n"
" void Init();"
" int i;\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// Unknown non-member function (friend class)
checkUninitVar("class Fred\n"
"{\n"
"public:\n"
" Fred() { Init(); }\n"
"private:\n"
" friend ABC;\n"
" int i;\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// Unknown non-member function (is Init a virtual function?)
checkUninitVar("class Fred : private ABC\n"
"{\n"
"public:\n"
" Fred() { Init(); }\n"
"private:\n"
" int i;\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// Unknown non-member function
checkUninitVar("class Fred\n"
"{\n"
"public:\n"
" Fred() { Init(); }\n"
"private:\n"
" int i;\n"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (style) Member variable not initialized in the constructor 'Fred::i'\n", errout.str());
}
void uninitVarEnum()
{
checkUninitVar("class Fred\n"
"{\n"
"public:\n"
" enum abc {a,b,c};\n"
" Fred() {}\n"
"private:\n"
" unsigned int i;\n"
"};\n");
ASSERT_EQUALS("[test.cpp:5]: (style) Member variable not initialized in the constructor 'Fred::i'\n", errout.str());
}
void uninitVarStream()
{
checkUninitVar("#include <fstream>\n"
"class Foo\n"
"{\n"
"private:\n"
" int foo;\n"
"public:\n"
" Foo(std::istream &in)\n"
" {\n"
" if(!(in >> foo))\n"
" throw 0;\n"
" }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void uninitVarTypedef()
{
checkUninitVar("class Foo\n"
"{\n"
"public:\n"
" typedef int * pointer;\n"
" Foo() : a(0) {}\n"
" pointer a;\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void uninitVarMemset()
{
checkUninitVar("class Foo\n"
"{\n"
"public:\n"
" int * pointer;\n"
" Foo() { memset(this, 0, sizeof(*this)); }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void privateCtor1()
{
checkUninitVar("class Foo {\n"
" int foo;\n"
" Foo() { }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (possible style) Member variable not initialized in the constructor 'Foo::foo'\n", errout.str());
}
void privateCtor2()
{
checkUninitVar("class Foo\n"
"{\n"
"private:\n"
" int foo;\n"
" Foo() { }\n"
"public:\n"
" Foo(int _i) { }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:5]: (possible style) Member variable not initialized in the constructor 'Foo::foo'\n"
"[test.cpp:7]: (possible style) Member variable not initialized in the constructor 'Foo::foo'\n", errout.str());
}
void function()
{
checkUninitVar("class A\n"
"{\n"
"public:\n"
" A();\n"
" int* f(int*);\n"
"};\n"
"\n"
"A::A()\n"
"{\n"
"}\n"
"\n"
"int* A::f(int* p)\n"
"{\n"
" return p;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void uninitVarHeader1()
{
checkUninitVar("#file \"fred.h\"\n"
"class Fred\n"
"{\n"
"private:\n"
" unsigned int i;\n"
"public:\n"
" Fred();\n"
"};\n"
"#endfile\n");
ASSERT_EQUALS("", errout.str());
}
void uninitVarHeader2()
{
checkUninitVar("#file \"fred.h\"\n"
"class Fred\n"
"{\n"
"private:\n"
" unsigned int i;\n"
"public:\n"
" Fred() { }\n"
"};\n"
"#endfile\n");
ASSERT_EQUALS("[fred.h:6]: (style) Member variable not initialized in the constructor 'Fred::i'\n", errout.str());
}
void uninitVarHeader3()
{
checkUninitVar("#file \"fred.h\"\n"
"class Fred\n"
"{\n"
"private:\n"
" mutable int i;\n"
"public:\n"
" Fred() { }\n"
"};\n"
"#endfile\n");
ASSERT_EQUALS("[fred.h:6]: (style) Member variable not initialized in the constructor 'Fred::i'\n", errout.str());
}
// Borland C++: No FP for published pointers - they are automaticly initialized
void uninitVarPublished()
{
checkUninitVar("class Fred\n"
"{\n"
"__published:\n"
" int *i;\n"
"public:\n"
" Fred() { }\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
// Borland C++: No FP for properties
void uninitProperty()
{
checkUninitVar("class Fred\n"
"{\n"
"private:\n"
" int * i_;\n"
"public:\n"
" Fred() { i_ = 0; }\n"
" __property int * i = {read=i_, write=i_};\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void uninitOperator()
{
checkUninitVar("class Fred\n"
"{\n"
"public:\n"
" Fred() { }\n"
" int *operator [] (int index) { return 0; }\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void uninitFunction1()
{
checkUninitVar("class Fred\n"
"{\n"
"public:\n"
" Fred() { init(*this); }\n"
"\n"
" static void init(Fred &f)\n"
" { f.d = 0; }\n"
"\n"
" double d;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void uninitFunction2()
{
checkUninitVar("class Fred\n"
"{\n"
"public:\n"
" Fred() { if (!init(*this)); }\n"
"\n"
" static bool init(Fred &f)\n"
" { f.d = 0; return true; }\n"
"\n"
" double d;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void checkNoConstructor(const char code[])
{
// Tokenize..
Tokenizer tokenizer;
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.simplifyTokenList();
// Clear the error log
errout.str("");
// Check..
Settings settings;
settings._checkCodingStyle = true;
CheckClass checkClass(&tokenizer, &settings, this);
checkClass.constructors();
}
void noConstructor1()
{
// There are nonstatic member variables - constructor is needed
checkNoConstructor("class Fred\n"
"{\n"
" int i;\n"
"};\n");
ASSERT_EQUALS("[test.cpp:1]: (style) The class 'Fred' has no constructor. Member variables not initialized.\n", errout.str());
}
void noConstructor2()
{
checkNoConstructor("class Fred\n"
"{\n"
"public:\n"
" static void foobar();\n"
"};\n"
"\n"
"void Fred::foobar()\n"
"{ }\n");
ASSERT_EQUALS("", errout.str());
}
void noConstructor3()
{
checkNoConstructor("class Fred\n"
"{\n"
"private:\n"
" static int foobar;\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void noConstructor4()
{
checkNoConstructor("class Fred\n"
"{\n"
"public:\n"
" int foobar;\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void checkNoMemset(const char code[])
{
// Tokenize..
Tokenizer tokenizer;
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
// Clear the error log
errout.str("");
// Check..
Settings settings;
CheckClass checkClass(&tokenizer, &settings, this);
checkClass.noMemset();
}
void memsetOnClass()
{
checkNoMemset("class A\n"
"{\n"
"};\n"
"void f()\n"
"{\n"
" A a;\n"
" memset(&a, 0, sizeof(A));\n"
"}\n");
ASSERT_EQUALS("", errout.str());
checkNoMemset("struct A\n"
"{\n"
"};\n"
"void f()\n"
"{\n"
" struct A a;\n"
" memset(&a, 0, sizeof(A));\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void memsetOnStruct()
{
checkNoMemset("class A\n"
"{\n"
" void g( struct sockaddr_in6& a);\n"
"private:\n"
" std::string b; \n"
"};\n"
"void f()\n"
"{\n"
" struct sockaddr_in6 fail;\n"
" memset(&fail, 0, sizeof(struct sockaddr_in6));\n"
"}\n");
ASSERT_EQUALS("", errout.str());
checkNoMemset("struct A\n"
"{\n"
" void g( struct sockaddr_in6& a);\n"
"private:\n"
" std::string b; \n"
"};\n"
"void f()\n"
"{\n"
" struct A fail;\n"
" memset(&fail, 0, sizeof(struct A));\n"
"}\n");
ASSERT_EQUALS("[test.cpp:10]: (error) Using 'memset' on struct that contains a 'std::string'\n", errout.str());
}
void memsetVector()
{
checkNoMemset("struct A\n"
"{ std::vector<int> ints; }\n"
"\n"
"void f()\n"
"{\n"
" A a;\n"
" memset(a, 0, sizeof(A));\n"
"}");
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on struct that contains a 'std::vector'\n", errout.str());
checkNoMemset("struct A\n"
"{ std::vector< std::vector<int> > ints; }\n"
"\n"
"void f()\n"
"{\n"
" A a;\n"
" memset(a, 0, sizeof(A));\n"
"}");
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on struct that contains a 'std::vector'\n", errout.str());
checkNoMemset("struct A\n"
"{ std::vector<int *> ints; }\n"
"\n"
"void f()\n"
"{\n"
" A a;\n"
" memset(a, 0, sizeof(A));\n"
"}");
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on struct that contains a 'std::vector'\n", errout.str());
}
void checkThisSubtraction(const char code[])
{
// Tokenize..
Tokenizer tokenizer;
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.simplifyTokenList();
// Clear the error log
errout.str("");
// Check..
Settings settings;
settings._checkCodingStyle = true;
settings._showAll = true;
CheckClass checkClass(&tokenizer, &settings, this);
checkClass.thisSubtraction();
}
void this_subtraction()
{
checkThisSubtraction("; this-x ;");
ASSERT_EQUALS("[test.cpp:1]: (possible style) Suspicious pointer subtraction\n", errout.str());
checkThisSubtraction("; *this = *this-x ;");
ASSERT_EQUALS("", errout.str());
checkThisSubtraction("; *this = *this-x ;\n"
"this-x ;");
ASSERT_EQUALS("[test.cpp:2]: (possible style) Suspicious pointer subtraction\n", errout.str());
checkThisSubtraction("; *this = *this-x ;\n"
"this-x ;\n"
"this-x ;\n");
ASSERT_EQUALS("[test.cpp:2]: (possible style) Suspicious pointer subtraction\n"
"[test.cpp:3]: (possible style) Suspicious pointer subtraction\n", errout.str());
}
void checkConst(const char code[])
{
// Tokenize..
Tokenizer tokenizer;
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.simplifyTokenList();
// Clear the error log
errout.str("");
// Check..
Settings settings;
settings._checkCodingStyle = true;
CheckClass checkClass(&tokenizer, &settings, this);
checkClass.checkConst();
}
void const1()
{
checkConst("class Fred {\n"
" int a;\n"
" int getA() { return a; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (style) The function 'Fred::getA' can be const\n", errout.str());
checkConst("class Fred {\n"
" const std::string foo() { return ""; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:2]: (style) The function 'Fred::foo' can be const\n", errout.str());
checkConst("class Fred {\n"
" std::string s;\n"
" const std::string & foo() { return ""; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (style) The function 'Fred::foo' can be const\n", errout.str());
// constructors can't be const..
checkConst("class Fred {\n"
" int a;\n"
"public:\n"
" Fred() { }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// assignment through |=..
checkConst("class Fred {\n"
" int a;\n"
" int setA() { a |= true; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// functions with a function call can't be const..
checkConst("class foo\n"
"{\n"
"public:\n"
" int x;\n"
" void b() { a(); }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// static functions can't be const..
checkConst("class foo\n"
"{\n"
"public:\n"
" static unsigned get()\n"
" { return 0; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void const2()
{
// ticket 1344
// assignment to variable can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo() { s = ""; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// assignment to function argument reference can be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a) { a = s; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (style) The function 'Fred::foo' can be const\n", errout.str());
// assignment to variable can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a) { s = a; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// assignment to function argument references can be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a, std::string & b) { a = s; b = s; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (style) The function 'Fred::foo' can be const\n", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a, std::string & b) { s = a; s = b; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a, std::string & b) { s = a; b = s; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a, std::string & b) { a = s; s = b; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void const3()
{
// assignment to function argument pointer can be const
checkConst("class Fred {\n"
" int s;\n"
" void foo(int * a) { *a = s; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (style) The function 'Fred::foo' can be const\n", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" int s;\n"
" void foo(int * a) { s = *a; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// assignment to function argument pointers can be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string * a, std::string * b) { *a = s; *b = s; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (style) The function 'Fred::foo' can be const\n", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string * a, std::string * b) { s = *a; s = *b; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string * a, std::string * b) { s = *a; *b = s; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string * a, std::string * b) { *a = s; s = b; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void const4()
{
checkConst("class Fred {\n"
" int a;\n"
" int getA();\n"
"};\n"
"int Fred::getA() { return a; }");
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (style) The function 'Fred::getA' can be const\n", errout.str());
checkConst("class Fred {\n"
" const std::string foo();\n"
"};\n"
"const std::string Fred::foo() { return ""; }");
ASSERT_EQUALS("[test.cpp:4] -> [test.cpp:2]: (style) The function 'Fred::foo' can be const\n", errout.str());
checkConst("class Fred {\n"
" std::string s;\n"
" const std::string & foo();\n"
"};\n"
"const std::string & Fred::foo() { return ""; }");
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (style) The function 'Fred::foo' can be const\n", errout.str());
// constructors can't be const..
checkConst("class Fred {\n"
" int a;\n"
"public:\n"
" Fred()\n"
"};\n"
"Fred::Fred() { }");
ASSERT_EQUALS("", errout.str());
// assignment through |=..
checkConst("class Fred {\n"
" int a;\n"
" int setA();\n"
"};\n"
"int Fred::setA() { a |= true; }");
ASSERT_EQUALS("", errout.str());
// functions with a function call can't be const..
checkConst("class foo\n"
"{\n"
"public:\n"
" int x;\n"
" void b();\n"
"};\n"
"void Fred::b() { a(); }");
ASSERT_EQUALS("", errout.str());
// static functions can't be const..
checkConst("class foo\n"
"{\n"
"public:\n"
" static unsigned get();\n"
"};\n"
"static unsigned Fred::get() { return 0; }");
ASSERT_EQUALS("", errout.str());
// assignment to variable can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo()\n"
"};\n"
"void Fred::foo() { s = ""; }");
ASSERT_EQUALS("", errout.str());
// assignment to function argument reference can be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a);\n"
"};\n"
"void Fred::foo(std::string & a) { a = s; }");
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (style) The function 'Fred::foo' can be const\n", errout.str());
// assignment to variable can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a);\n"
"};\n"
"void Fred::foo(std::string & a) { s = a; }");
ASSERT_EQUALS("", errout.str());
// assignment to function argument references can be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a, std::string & b);\n"
"};\n"
"void Fred::foo(std::string & a, std::string & b) { a = s; b = s; }");
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (style) The function 'Fred::foo' can be const\n", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a, std::string & b);\n"
"};\n"
"void Fred::foo(std::string & a, std::string & b) { s = a; s = b; }");
ASSERT_EQUALS("", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a, std::string & b);\n"
"};\n"
"void Fred::foo(std::string & a, std::string & b) { s = a; b = s; }");
ASSERT_EQUALS("", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a, std::string & b);\n"
"};\n"
"void foo(std::string & a, std::string & b) { a = s; s = b; }");
ASSERT_EQUALS("", errout.str());
// assignment to function argument pointer can be const
checkConst("class Fred {\n"
" int s;\n"
" void foo(int * a);\n"
"};\n"
"void Fred::foo(int * a) { *a = s; }");
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (style) The function 'Fred::foo' can be const\n", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" int s;\n"
" void foo(int * a);\n"
"};\n"
"void Fred::foo(int * a) { s = *a; }");
ASSERT_EQUALS("", errout.str());
// assignment to function argument pointers can be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string * a, std::string * b);\n"
"};\n"
"void Fred::foo(std::string * a, std::string * b) { *a = s; *b = s; }");
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (style) The function 'Fred::foo' can be const\n", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string * a, std::string * b);\n"
"};\n"
"void Fred::foo(std::string * a, std::string * b) { s = *a; s = *b; }");
ASSERT_EQUALS("", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string * a, std::string * b);\n"
"};\n"
"void Fred::foo(std::string * a, std::string * b) { s = *a; *b = s; }");
ASSERT_EQUALS("", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string * a, std::string * b);\n"
"};\n"
"void Fred::foo(std::string * a, std::string * b) { *a = s; s = b; }");
ASSERT_EQUALS("", errout.str());
// check functions with same name
checkConst("class Fred {\n"
" std::string s;\n"
" void foo();\n"
" void foo(std::string & a);\n"
" void foo(const std::string & a);\n"
"};\n"
"void Fred::foo() { }"
"void Fred::foo(std::string & a) { a = s; }"
"void Fred::foo(const std::string & a) { s = a; }");
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:3]: (style) The function 'Fred::foo' can be const\n"
"[test.cpp:7] -> [test.cpp:4]: (style) The function 'Fred::foo' can be const\n", errout.str());
// check functions with different or missing paramater names
checkConst("class Fred {\n"
" std::string s;\n"
" void foo1(int, int);\n"
" void foo2(int a, int b);\n"
" void foo3(int, int b);\n"
" void foo4(int a, int);\n"
" void foo5(int a, int b);\n"
"};\n"
"void Fred::foo1(int a, int b) { }\n"
"void Fred::foo2(int c, int d) { }\n"
"void Fred::foo3(int a, int b) { }\n"
"void Fred::foo4(int a, int b) { }\n"
"void Fred::foo5(int, int) { }");
ASSERT_EQUALS("[test.cpp:9] -> [test.cpp:3]: (style) The function 'Fred::foo1' can be const\n"
"[test.cpp:10] -> [test.cpp:4]: (style) The function 'Fred::foo2' can be const\n"
"[test.cpp:11] -> [test.cpp:5]: (style) The function 'Fred::foo3' can be const\n"
"[test.cpp:12] -> [test.cpp:6]: (style) The function 'Fred::foo4' can be const\n"
"[test.cpp:13] -> [test.cpp:7]: (style) The function 'Fred::foo5' can be const\n", errout.str());
// check nested classes
checkConst("class Fred {\n"
" class A {\n"
" int a;\n"
" int getA() { return a; }\n"
" };\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'Fred::A::getA' can be const\n", errout.str());
checkConst("class Fred {\n"
" class A {\n"
" int a;\n"
" int getA();\n"
" };\n"
" int A::getA() { return a; }\n"
"};");
ASSERT_EQUALS("[test.cpp:6] -> [test.cpp:4]: (style) The function 'Fred::A::getA' can be const\n", errout.str());
checkConst("class Fred {\n"
" class A {\n"
" int a;\n"
" int getA();\n"
" };\n"
"};\n"
"int Fred::A::getA() { return a; }");
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:4]: (style) The function 'Fred::A::getA' can be const\n", errout.str());
// check deeply nested classes
checkConst("class Fred {\n"
" class B {\n"
" int b;\n"
" int getB() { return b; }\n"
" class A {\n"
" int a;\n"
" int getA() { return a; }\n"
" };\n"
" };\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'Fred::B::getB' can be const\n"
"[test.cpp:7]: (style) The function 'Fred::B::A::getA' can be const\n", errout.str());
checkConst("class Fred {\n"
" class B {\n"
" int b;\n"
" int getB();\n"
" class A {\n"
" int a;\n"
" int getA();\n"
" };\n"
" int A::getA() { return a; }\n"
" };\n"
" int B::getB() { return b; }\n"
"};");
ASSERT_EQUALS("[test.cpp:11] -> [test.cpp:4]: (style) The function 'Fred::B::getB' can be const\n"
"[test.cpp:9] -> [test.cpp:7]: (style) The function 'Fred::B::A::getA' can be const\n", errout.str());
checkConst("class Fred {\n"
" class B {\n"
" int b;\n"
" int getB();\n"
" class A {\n"
" int a;\n"
" int getA();\n"
" };\n"
" };\n"
"};\n"
"int Fred::B::A::getA() { return a; }\n"
"int Fred::B::getB() { return b; }\n");
ASSERT_EQUALS("[test.cpp:12] -> [test.cpp:4]: (style) The function 'Fred::B::getB' can be const\n"
"[test.cpp:11] -> [test.cpp:7]: (style) The function 'Fred::B::A::getA' can be const\n", errout.str());
}
// operator< can often be const
void constoperator()
{
checkConst("struct Fred {\n"
" int a;\n"
" bool operator<(const Fred &f) { return (a < f.a); }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (style) The function 'Fred::operator<' can be const\n", errout.str());
}
void const5()
{
// ticket #1482
checkConst("class A {\n"
" int a;\n"
" bool foo(int i)\n"
" {\n"
" bool same;\n"
" same = (i == a);\n"
" return same;\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (style) The function 'A::foo' can be const\n", errout.str());
}
void const6()
{
// ticket # 1491
checkConst("class foo {\n"
"public:\n"
"};\n"
"void bar() {}");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred\n"
"{\n"
"public:\n"
" void foo() { }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'Fred::foo' can be const\n", errout.str());
checkConst("struct fast_string\n"
"{\n"
" union\n"
" {\n"
" char buff[100];\n"
" };\n"
" void set_type(char t);\n"
"};\n"
"inline void fast_string::set_type(char t)\n"
"{\n"
" buff[10] = t;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void const7()
{
checkConst("class foo {\n"
" int a;\n"
"public:\n"
" void set(int i) { a = i; }\n"
" void set(const foo & f) { *this = f; }\n"
"};\n"
"void bar() {}");
ASSERT_EQUALS("", errout.str());
}
void const8()
{
// ticket #1517
checkConst("class A {\n"
"public:\n"
" A():m_strValue(""){}\n"
" std::string strGetString() { return m_strValue; }\n"
"private:\n"
" std::string m_strValue;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::strGetString' can be const\n", errout.str());
}
void const9()
{
// ticket #1515
checkConst("class wxThreadInternal {\n"
"public:\n"
" void SetExitCode(wxThread::ExitCode exitcode) { m_exitcode = exitcode; }\n"
"private:\n"
" wxThread::ExitCode m_exitcode;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void const10()
{
// ticket #1522
checkConst("class A {\n"
"public:\n"
" int foo() { return x = 0; }\n"
"private:\n"
" int x;\n"
"}");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
"public:\n"
" int foo() { return (x ? x : x = 0); }\n"
"private:\n"
" int x;\n"
"}");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
"public:\n"
" int foo() { return (x ? x = 0 : x); }\n"
"private:\n"
" int x;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void const11()
{
// ticket #1529
checkConst("class A {\n"
"public:\n"
" void set(struct tm time) { m_time = time; }\n"
"private:\n"
" struct tm m_time;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void const12()
{
// ticket #1525
checkConst("class A {\n"
"public:\n"
" int foo() { x = 0; }\n"
"private:\n"
" mutable int x;\n"
"}");
ASSERT_EQUALS("[test.cpp:3]: (style) The function 'A::foo' can be const\n", errout.str());
}
void const13()
{
// ticket #1519
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::vector<int> GetVec() {return m_vec;}\n"
" std::pair<int,double> GetPair() {return m_pair;}\n"
"private:\n"
" std::vector<int> m_vec;\n"
" std::pair<int,double> m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetVec' can be const\n"
"[test.cpp:5]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" const std::vector<int> & GetVec() {return m_vec;}\n"
" const std::pair<int,double> & GetPair() {return m_pair;}\n"
"private:\n"
" std::vector<int> m_vec;\n"
" std::pair<int,double> m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetVec' can be const\n"
"[test.cpp:5]: (style) The function 'A::GetPair' can be const\n", errout.str());
}
void const14()
{
// extends ticket 1519
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair<std::vector<int>,double> GetPair() {return m_pair;}\n"
"private:\n"
" std::pair<std::vector<int>,double> m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" const std::pair<std::vector<int>,double>& GetPair() {return m_pair;}\n"
"private:\n"
" std::pair<std::vector<int>,double> m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair<std::vector<int>,double>& GetPair() {return m_pair;}\n"
"private:\n"
" std::pair<std::vector<int>,double> m_pair;\n"
"}");
ASSERT_EQUALS("", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair<int ,double> GetPair() {return m_pair;}\n"
"private:\n"
" pair<int ,double> m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" const pair<int ,double> & GetPair() {return m_pair;}\n"
"private:\n"
" pair<int ,double> m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair<int ,double> & GetPair() {return m_pair;}\n"
"private:\n"
" pair<int ,double> m_pair;\n"
"}");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair< int,std::vector<int> > GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< int,std::vector<int> > m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" const std::pair< int,std::vector<int> >& GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< int,std::vector<int> > m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair< int,std::vector<int> >& GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< int,std::vector<int> > m_pair;\n"
"}");
ASSERT_EQUALS("", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< int,vector<int> > GetPair() {return m_pair;}\n"
"private:\n"
" pair< int,vector<int> > m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" const pair< int,vector<int> >& GetPair() {return m_pair;}\n"
"private:\n"
" pair< int,vector<int> > m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< int,vector<int> >& GetPair() {return m_pair;}\n"
"private:\n"
" pair< int,vector<int> > m_pair;\n"
"}");
ASSERT_EQUALS("", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< vector<int>, int > GetPair() {return m_pair;}\n"
"private:\n"
" pair< vector<int>, int > m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" const pair< vector<int>, int >& GetPair() {return m_pair;}\n"
"private:\n"
" pair< vector<int>, int > m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< vector<int>, int >& GetPair() {return m_pair;}\n"
"private:\n"
" pair< vector<int>, int > m_pair;\n"
"}");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair< std::vector<int>,std::vector<int> > GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< std::vector<int>,std::vector<int> > m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" const std::pair< std::vector<int>,std::vector<int> >& GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< std::vector<int>,std::vector<int> > m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair< std::vector<int>,std::vector<int> >& GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< std::vector<int>,std::vector<int> > m_pair;\n"
"}");
ASSERT_EQUALS("", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< vector<int>, vector<int> > GetPair() {return m_pair;}\n"
"private:\n"
" pair< vector<int>, vector<int> > m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" const pair< vector<int>, vector<int> >& GetPair() {return m_pair;}\n"
"private:\n"
" pair< vector<int>, vector<int> > m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< vector<int>, vector<int> >& GetPair() {return m_pair;}\n"
"private:\n"
" pair< vector<int>, vector<int> > m_pair;\n"
"}");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair< std::pair < int, char > , int > GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< std::pair < int, char > , int > m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" const std::pair< std::pair < int, char > , int > & GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< std::pair < int, char > , int > m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair< std::pair < int, char > , int > & GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< std::pair < int, char > , int > m_pair;\n"
"}");
ASSERT_EQUALS("", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< pair < int, char > , int > GetPair() {return m_pair;}\n"
"private:\n"
" pair< pair < int, char > , int > m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" const pair< pair < int, char > , int > & GetPair() {return m_pair;}\n"
"private:\n"
" pair< pair < int, char > , int > m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< pair < int, char > , int > & GetPair() {return m_pair;}\n"
"private:\n"
" pair< pair < int, char > , int > m_pair;\n"
"}");
ASSERT_EQUALS("", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< int , pair < int, char > > GetPair() {return m_pair;}\n"
"private:\n"
" pair< int , pair < int, char > > m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" const pair< int , pair < int, char > > & GetPair() {return m_pair;}\n"
"private:\n"
" pair< int , pair < int, char > > m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< int , pair < int, char > > & GetPair() {return m_pair;}\n"
"private:\n"
" pair< int , pair < int, char > > m_pair;\n"
"}");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair< int , std::pair < int, char > > GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< int , std::pair < int, char > > m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" const std::pair< int , std::pair < int, char > >& GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< int , std::pair < int, char > > m_pair;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetPair' can be const\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair< int , std::pair < int, char > >& GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< int , std::pair < int, char > > m_pair;\n"
"}");
ASSERT_EQUALS("", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" vector<int> GetVec() {return m_Vec;}\n"
"private:\n"
" vector<int> m_Vec;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetVec' can be const\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" const vector<int>& GetVec() {return m_Vec;}\n"
"private:\n"
" vector<int> m_Vec;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) The function 'A::GetVec' can be const\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" vector<int>& GetVec() {return m_Vec;}\n"
"private:\n"
" vector<int> m_Vec;\n"
"}");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
"public:\n"
" int * const * foo() { return &x; }\n"
"private:\n"
" const int * x;\n"
"}");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
"public:\n"
" const int ** foo() { return &x; }\n"
"private:\n"
" const int * x;\n"
"}");
ASSERT_EQUALS("[test.cpp:3]: (style) The function 'A::foo' can be const\n", errout.str());
checkConst("class A {\n"
"public:\n"
" const int * const * foo() { return &x; }\n"
"private:\n"
" const int * x;\n"
"}");
ASSERT_EQUALS("[test.cpp:3]: (style) The function 'A::foo' can be const\n", errout.str());
}
void const15()
{
checkConst("class Fred {\n"
" unsigned long long int a;\n"
" unsigned long long int getA() { return a; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (style) The function 'Fred::getA' can be const\n", errout.str());
// constructors can't be const..
checkConst("class Fred {\n"
" unsigned long long int a;\n"
"public:\n"
" Fred() { }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// assignment through |=..
checkConst("class Fred {\n"
" unsigned long long int a;\n"
" unsigned long long int setA() { a |= true; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// functions with a function call can't be const..
checkConst("class foo\n"
"{\n"
"public:\n"
" unsigned long long int x;\n"
" void b() { a(); }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
// static functions can't be const..
checkConst("class foo\n"
"{\n"
"public:\n"
" static unsigned long long int get()\n"
" { return 0; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void const16()
{
// ticket #1551
checkConst("class Fred {\n"
" int a;\n"
" void set(int i) { Fred::a = i; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
// increment/decrement => not const
void constincdec()
{
checkConst("class Fred {\n"
" int a;\n"
" void nextA() { return ++a; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
// return pointer/reference => not const
void constReturnReference()
{
checkConst("class Fred {\n"
" int a;\n"
" int &getR() { return a; }\n"
" int *getP() { return &a; }"
"};\n");
ASSERT_EQUALS("", errout.str());
}
// delete member variable => not const (but technically it can, it compiles without errors)
void constDelete()
{
checkConst("class Fred {\n"
" int *a;\n"
" void clean() { delete a; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
// A function that returns LPVOID can't be const
void constLPVOID()
{
checkConst("class Fred {\n"
" LPVOID a() { return 0; };\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
};
REGISTER_TEST(TestClass)
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