/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2015 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 "testsuite.h"
#include "tokenize.h"
#include "token.h"
#include "settings.h"
#include "templatesimplifier.h"
class TestSimplifyTemplate : public TestFixture {
public:
TestSimplifyTemplate() : TestFixture("TestSimplifyTemplate") {
}
private:
void run() {
TEST_CASE(template1);
TEST_CASE(template2);
TEST_CASE(template3);
TEST_CASE(template4);
TEST_CASE(template5);
TEST_CASE(template6);
TEST_CASE(template7);
TEST_CASE(template8);
TEST_CASE(template9);
TEST_CASE(template10);
TEST_CASE(template11);
TEST_CASE(template12);
TEST_CASE(template13);
TEST_CASE(template14);
TEST_CASE(template15);
TEST_CASE(template16);
TEST_CASE(template17);
TEST_CASE(template18);
TEST_CASE(template19);
TEST_CASE(template20);
TEST_CASE(template21);
TEST_CASE(template22);
TEST_CASE(template23);
TEST_CASE(template24); // #2648 - using sizeof in template parameter
TEST_CASE(template25); // #2648 - another test for sizeof template parameter
TEST_CASE(template26); // #2721 - passing 'char[2]' as template parameter
TEST_CASE(template27); // #3350 - removing unused template in macro call
TEST_CASE(template28);
TEST_CASE(template29); // #3449 - don't crash for garbage code
TEST_CASE(template30); // #3529 - template < template < ..
TEST_CASE(template31); // #4010 - reference type
TEST_CASE(template32); // #3818 - mismatching template not handled well
TEST_CASE(template33); // #3818,#4544 - inner templates in template instantiation not handled well
TEST_CASE(template34); // #3706 - namespace => hang
TEST_CASE(template35); // #4074 - A<'x'> a;
TEST_CASE(template36); // #4310 - passing unknown template instantiation as template argument
TEST_CASE(template37); // #4544 - A<class B> a;
TEST_CASE(template38); // #4832 - crash on C++11 right angle brackets
TEST_CASE(template39); // #4742 - freeze
TEST_CASE(template40); // #5055 - template specialization outside struct
TEST_CASE(template41); // #4710 - const in instantiation not handled perfectly
TEST_CASE(template42); // #4878 - variadic templates
TEST_CASE(template43); // #5097 - assert due to '>>' not treated as end of template instantiation
TEST_CASE(template44); // #5297 - TemplateSimplifier::simplifyCalculations not eager enough
TEST_CASE(template45); // #5814 - syntax error reported for valid code
TEST_CASE(template46); // #5816 - syntax error reported for valid code
TEST_CASE(template47); // #6023 - syntax error reported for valid code
TEST_CASE(template48); // #6134 - 100% CPU upon invalid code
TEST_CASE(template49); // #6237 - template instantiation
TEST_CASE(template50); // #4272 - simple partial specialization
TEST_CASE(template51); // #6172 - crash upon valid code
TEST_CASE(template_unhandled);
TEST_CASE(template_default_parameter);
TEST_CASE(template_default_type);
TEST_CASE(template_typename);
TEST_CASE(template_constructor); // #3152 - template constructor is removed
// Test TemplateSimplifier::templateParameters
TEST_CASE(templateParameters);
TEST_CASE(templateParameters1); // #4169 - segmentation fault
TEST_CASE(templateNamePosition);
}
std::string tok(const char code[], bool simplify = true, Settings::PlatformType type = Settings::Unspecified) {
errout.str("");
Settings settings;
settings.addEnabled("portability");
settings.platform(type);
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
if (simplify)
tokenizer.simplifyTokenList2();
return tokenizer.tokens()->stringifyList(0, !simplify);
}
std::string tok(const char code[], const char filename[]) {
errout.str("");
Settings settings;
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code);
tokenizer.tokenize(istr, filename);
tokenizer.simplifyTokenList2();
return tokenizer.tokens()->stringifyList(0, false);
}
void template1() {
const char code[] = "template <classname T> void f(T val) { T a; }\n"
"f<int>(10);";
const std::string expected("f<int> ( 10 ) ; "
"void f<int> ( int val ) { }");
ASSERT_EQUALS(expected, tok(code));
}
void template2() {
const char code[] = "template <classname T> class Fred { T a; };\n"
"Fred<int> fred;";
const std::string expected("Fred<int> fred ; "
"class Fred<int> { int a ; } ;");
ASSERT_EQUALS(expected, tok(code));
}
void template3() {
const char code[] = "template <classname T, int sz> class Fred { T data[sz]; };\n"
"Fred<float,4> fred;";
const std::string expected("Fred<float,4> fred ; "
"class Fred<float,4> { float data [ 4 ] ; } ;");
ASSERT_EQUALS(expected, tok(code));
}
void template4() {
const char code[] = "template <classname T> class Fred { Fred(); };\n"
"Fred<float> fred;";
const std::string expected("Fred<float> fred ; "
"class Fred<float> { Fred<float> ( ) ; } ;");
ASSERT_EQUALS(expected, tok(code));
}
void template5() {
const char code[] = "template <classname T> class Fred { };\n"
"template <classname T> Fred<T>::Fred() { }\n"
"Fred<float> fred;";
const std::string expected("template < classname T > Fred < T > :: Fred ( ) { } " // <- TODO: this should be removed
"Fred<float> fred ; "
"class Fred<float> { } ; "
"Fred<float> :: Fred<float> ( ) { }");
ASSERT_EQUALS(expected, tok(code));
}
void template6() {
const char code[] = "template <classname T> class Fred { };\n"
"Fred<float> fred1;\n"
"Fred<float> fred2;";
const std::string expected("Fred<float> fred1 ; "
"Fred<float> fred2 ; "
"class Fred<float> { } ;");
ASSERT_EQUALS(expected, tok(code));
}
void template7() {
// A template class that is not used => no simplification
{
const char code[] = "template <class T>\n"
"class ABC\n"
"{\n"
"public:\n"
" typedef ABC<T> m;\n"
"};\n";
const std::string expected("template < class T > class ABC { public: } ;");
ASSERT_EQUALS(expected, tok(code));
}
{
const char code[] = "template <typename T> class ABC {\n"
"public:\n"
" typedef std::vector<T> type;\n"
"};\n"
"int main() {\n"
" ABC<int>::type v;\n"
" v.push_back(4);\n"
" return 0;\n"
"}\n";
const std::string wanted("template < typename T > class ABC { public: } ; "
"int main ( ) { "
"std :: vector < int > v ; "
"v . push_back ( 4 ) ; "
"return 0 ; "
"}");
const std::string current("template < typename T > class ABC { public: } ; "
"int main ( ) { "
"ABC < int > :: type v ; "
"v . push_back ( 4 ) ; "
"return 0 ; "
"}");
TODO_ASSERT_EQUALS(wanted, current, tok(code));
}
{
const char code[] = "template <typename T> class ABC {\n"
"public:\n"
" typedef std::vector<T> type;\n"
" void f()\n"
" {\n"
" ABC<int>::type v;\n"
" v.push_back(4);\n"
" }\n"
"};\n";
const std::string expected("template < typename T > class ABC { "
"public: void f ( ) { "
"ABC < int > :: type v ; "
"v . push_back ( 4 ) ; "
"} "
"} ;");
ASSERT_EQUALS(expected, tok(code));
}
}
// Template definitions but no usage => no expansion
void template8() {
const char code[] = "template<typename T> class A;\n"
"template<typename T> class B;\n"
"\n"
"typedef A<int> x;\n"
"typedef B<int> y;\n"
"\n"
"template<typename T> class A {\n"
" void f() {\n"
" B<T> a = B<T>::g();\n"
" T b = 0;\n"
" if (b)\n"
" b = 0;\n"
" }\n"
"};\n"
"\n"
"template<typename T> inline B<T> h() { return B<T>(); }\n";
ASSERT_EQUALS("template < typename T > class A ; "
"template < typename T > class B ; "
"template < typename T > class A { void f ( ) { B < T > a ; a = B < T > :: g ( ) ; T b ; b = 0 ; } } ; "
"template < typename T > B < T > h ( ) { return B < T > ( ) ; }", tok(code));
ASSERT_EQUALS("class A { template < typename T > int foo ( T d ) ; } ;", tok("class A{ template<typename T> int foo(T d);};"));
}
void template9() {
const char code[] = "template < typename T > class A { } ;\n"
"\n"
"void f ( ) {\n"
" A<int> a ;\n"
"}\n"
"\n"
"template < typename T >\n"
"class B {\n"
" void g ( ) {\n"
" A < T > b = A < T > :: h ( ) ;\n"
" }\n"
"} ;\n";
// The expected result..
std::string expected("void f ( ) { A<int> a ; } "
"template < typename T > class B { void g ( ) { A<T> b ; b = A<T> :: h ( ) ; } } ; "
"class A<int> { } ; class A<T> { } ;");
ASSERT_EQUALS(expected, tok(code));
}
void template10() {
const char code[] = "template <int ui, typename T> T * foo()\n"
"{ return new T[ui]; }\n"
"\n"
"void f ( )\n"
"{\n"
" foo<3,int>();\n"
"}\n";
// The expected result..
const std::string expected("void f ( ) "
"{"
" foo<3,int> ( ) ; "
"} "
"int * foo<3,int> ( ) { return new int [ 3 ] ; }");
ASSERT_EQUALS(expected, tok(code));
}
void template11() {
const char code[] = "template <int ui, typename T> T * foo()\n"
"{ return new T[ui]; }\n"
"\n"
"void f ( )\n"
"{\n"
" char * p = foo<3,char>();\n"
"}\n";
// The expected result..
const std::string expected("void f ( ) "
"{"
" char * p ; p = foo<3,char> ( ) ; "
"} "
"char * foo<3,char> ( ) { return new char [ 3 ] ; }");
ASSERT_EQUALS(expected, tok(code));
}
void template12() {
const char code[] = "template <int x, int y, int z>\n"
"class A : public B<x, y, (x - y) ? ((y < z) ? 1 : -1) : 0>\n"
"{ };\n"
"\n"
"void f()\n"
"{\n"
" A<12,12,11> a;\n"
"}\n";
// The expected result..
const std::string expected("void f ( ) "
"{"
" A<12,12,11> a ; "
"} "
"class A<12,12,11> : public B < 12 , 12 , 0 > "
"{ } ;");
ASSERT_EQUALS(expected, tok(code));
}
void template13() {
const char code[] = "class BB {};\n"
"\n"
"template <class T>\n"
"class AA\n"
"{\n"
"public:\n"
" static AA<T> create(T* newObject);\n"
" static int size();\n"
"};\n"
"\n"
"class CC { public: CC(AA<BB>, int) {} };\n"
"\n"
"class XX {\n"
" AA<CC> y;\n"
"public:\n"
" XX();\n"
"};\n"
"\n"
"XX::XX():\n"
" y(AA<CC>::create(new CC(AA<BB>(), 0)))\n"
" {}\n"
"\n"
"int yy[AA<CC>::size()];";
// Just run it and check that there are not assertions.
tok(code);
}
void template14() {
const char code[] = "template <> void foo<int *>()\n"
"{ x(); }\n"
"\n"
"int main()\n"
"{\n"
"foo<int*>();\n"
"}\n";
// The expected result..
const std::string expected("void foo<int*> ( ) "
"{ x ( ) ; } "
"int main ( ) "
"{ foo<int*> ( ) ; }");
ASSERT_EQUALS(expected, tok(code));
}
void template15() {
const char code[] = "template <unsigned int i> void a()\n"
"{\n"
" a<i-1>();\n"
"}\n"
"\n"
"template <> void a<0>()\n"
"{ }\n"
"\n"
"int main()\n"
"{\n"
" a<2>();\n"
" return 0;\n"
"}\n";
// The expected result..
const std::string expected("void a<0> ( ) { } "
"int main ( ) "
"{ a<2> ( ) ; return 0 ; } "
"void a<2> ( ) { a<1> ( ) ; } "
"void a<1> ( ) { a<0> ( ) ; }");
ASSERT_EQUALS(expected, tok(code));
}
void template16() {
const char code[] = "template <unsigned int i> void a()\n"
"{ }\n"
"\n"
"template <unsigned int i> void b()\n"
"{ a<i>(); }\n"
"\n"
"int main()\n"
"{\n"
" b<2>();\n"
" return 0;\n"
"}\n";
const std::string expected("int main ( ) { b<2> ( ) ; return 0 ; } "
"void b<2> ( ) { a<2> ( ) ; } "
"void a<i> ( ) { } "
"void a<2> ( ) { }");
ASSERT_EQUALS(expected, tok(code));
}
void template17() {
const char code[] = "template<class T>\n"
"class Fred\n"
"{\n"
" template<class T>\n"
" static shared_ptr< Fred<T> > CreateFred()\n"
" {\n"
" }\n"
"};\n"
"\n"
"shared_ptr<int> i;\n";
// Assert that there is no segmentation fault..
tok(code);
}
void template18() {
const char code[] = "template <class T> class foo { T a; };\n"
"foo<int> *f;";
const std::string expected("foo<int> * f ; "
"class foo<int> { int a ; } ;");
ASSERT_EQUALS(expected, tok(code));
}
void template19() {
const char code[] = "template <typename T> T & foo()\n"
"{ static T temp; return temp; }\n"
"\n"
"void f ( )\n"
"{\n"
" char p = foo<char>();\n"
"}\n";
// The expected result..
const std::string expected("void f ( ) "
"{"
" char p ; p = foo<char> ( ) ; "
"} "
"char & foo<char> ( ) { static char temp ; return temp ; }");
ASSERT_EQUALS(expected, tok(code));
}
void template20() {
// Ticket #1788 - the destructor implementation is lost
const char code[] = "template <class T> class A\n"
"{\n"
"public:\n"
" ~A();\n"
"};\n"
"\n"
"template <class T> A<T>::~A()\n"
"{\n"
"}\n"
"\n"
"A<int> a;\n";
// The expected result..
const std::string expected("template < class T > A < T > :: ~ A ( ) { } " // <- TODO: this should be removed
"A<int> a ; "
"class A<int> { public: ~ A<int> ( ) ; } ; "
"A<int> :: ~ A<int> ( ) { }");
ASSERT_EQUALS(expected, tok(code));
}
void template21() {
{
const char code[] = "template <classname T> struct Fred { T a; };\n"
"Fred<int> fred;";
const std::string expected("Fred<int> fred ; "
"struct Fred<int> { int a ; } ;");
ASSERT_EQUALS(expected, tok(code));
}
{
const char code[] = "template <classname T, int sz> struct Fred { T data[sz]; };\n"
"Fred<float,4> fred;";
const std::string expected("Fred<float,4> fred ; "
"struct Fred<float,4> { float data [ 4 ] ; } ;");
ASSERT_EQUALS(expected, tok(code));
}
{
const char code[] = "template <classname T> struct Fred { Fred(); };\n"
"Fred<float> fred;";
const std::string expected("Fred<float> fred ; "
"struct Fred<float> { Fred<float> ( ) ; } ;");
ASSERT_EQUALS(expected, tok(code));
}
{
const char code[] = "template <classname T> struct Fred { };\n"
"Fred<float> fred1;\n"
"Fred<float> fred2;";
const std::string expected("Fred<float> fred1 ; "
"Fred<float> fred2 ; "
"struct Fred<float> { } ;");
ASSERT_EQUALS(expected, tok(code));
}
}
void template22() {
const char code[] = "template <classname T> struct Fred { T a; };\n"
"Fred<std::string> fred;";
const std::string expected("Fred<std::string> fred ; "
"struct Fred<std::string> { std :: string a ; } ;");
ASSERT_EQUALS(expected, tok(code));
}
void template23() {
const char code[] = "template <classname T> void foo() { }\n"
"void bar() {\n"
" std::cout << (foo<double>());\n"
"}";
const std::string expected("void bar ( ) {"
" std :: cout << ( foo<double> ( ) ) ; "
"} "
"void foo<double> ( ) { }");
ASSERT_EQUALS(expected, tok(code));
}
void template24() {
// #2648
const char code[] = "template<int n> struct B\n"
"{\n"
" int a[n];\n"
"};\n"
"\n"
"template<int x> class bitset: B<sizeof(int)>\n"
"{};\n"
"\n"
"bitset<1> z;";
const char expected[] = "bitset<1> z ; "
"class bitset<1> : B<4> { } ; "
"struct B<4> { int a [ 4 ] ; } ;";
ASSERT_EQUALS(expected, tok(code));
}
void template25() {
const char code[] = "template<int n> struct B\n"
"{\n"
" int a[n];\n"
"};\n"
"\n"
"template<int x> class bitset: B<((sizeof(int)) ? : 1)>\n"
"{};\n"
"\n"
"bitset<1> z;";
const char actual[] = "template < int n > struct B { int a [ n ] ; } ; "
"bitset<1> z ; "
"class bitset<1> : B < 4 > { } ;";
const char expected[] = "bitset<1> z ; "
"class bitset<1> : B<4> { } ; "
"struct B<4> { int a [ 4 ] ; } ;";
TODO_ASSERT_EQUALS(expected, actual, tok(code));
}
void template26() {
// #2721
const char code[] = "template<class T>\n"
"class A { public: T x; };\n"
"\n"
"template<class M>\n"
"class C: public A<char[M]> {};\n"
"\n"
"C<2> a;\n";
// TODO: expand A also
ASSERT_EQUALS("template < class T > class A { public: T x ; } ; C<2> a ; class C<2> : public A < char [ 2 ] > { } ;", tok(code));
}
void template27() {
// #3350 - template inside macro call
const char code[] = "X(template<class T> class Fred);";
ASSERT_EQUALS("X ( template < class T > class Fred ) ;", tok(code));
}
void template28() {
// #3226 - inner template
const char code[] = "template<class A, class B> class Fred {};\n"
"Fred<int,Fred<int,int> > x;\n";
ASSERT_EQUALS("Fred<int,Fred<int,int>> x ; class Fred<int,int> { } ; class Fred<int,Fred<int,int>> { } ;", tok(code));
}
void template29() {
// #3449 - garbage code (don't segfault)
const char code[] = "template<typename T> struct A;\n"
"struct B { template<typename T> struct C };\n"
"{};";
ASSERT_EQUALS("template < typename T > struct A ; struct B { template < typename T > struct C } ; { } ;", tok(code));
}
void template30() {
// #3529 - template < template < ..
const char code[] = "template<template<class> class A, class B> void f(){}";
ASSERT_EQUALS("template < template < class > class A , class B > void f ( ) { }", tok(code));
}
void template31() {
// #4010 - template reference type
const char code[] = "template<class T> struct A{}; A<int&> a;";
ASSERT_EQUALS("A<int&> a ; struct A<int&> { } ;", tok(code));
}
void template32() {
// #3818 - mismatching template not handled well
const char code[] = "template <class T1, class T2, class T3, class T4 > struct A { };\n"
"\n"
"template <class T>\n"
"struct B\n"
"{\n"
" public:\n"
" A < int, Pair<T, int>, int > a;\n" // mismatching parameters => don't instantiate
"};\n"
"\n"
"B<int> b;\n";
ASSERT_EQUALS("template < class T1 , class T2 , class T3 , class T4 > struct A { } ; "
"B<int> b ; "
"struct B<int> { public: A < int , Pair < int , int > , int > a ; } ;", tok(code));
}
void template33() {
{
// #3818 - inner templates in template instantiation not handled well
const char code[] = "template<class T> struct A { };\n"
"template<class T> struct B { };\n"
"template<class T> struct C { A<B<X<T> > > ab; };\n"
"C<int> c;";
ASSERT_EQUALS("C<int> c ; "
"struct C<int> { A<B<X<int>>> ab ; } ; "
"struct B<X<int>> { } ; " // <- redundant.. but nevermind
"struct A<B<X<T>>> { } ; " // <- redundant.. but nevermind
"struct A<B<X<int>>> { } ;", tok(code));
}
{
// #4544
const char code[] = "struct A { };\n"
"template<class T> struct B { };\n"
"template<class T> struct C { };\n"
"C< B<A> > c;";
ASSERT_EQUALS("struct A { } ; "
"template < class T > struct B { } ; " // <- redundant.. but nevermind
"C<B<A>> c ; struct C<B<A>> { } ;",
tok(code));
}
}
void template34() {
// #3706 - namespace => hang
const char code[] = "namespace abc {\n"
"template <typename T> struct X { void f(X<T> &x) {} };\n"
"}\n"
"template <> int X<int>::Y(0);";
ASSERT_EQUALS("namespace abc { "
"template < typename T > struct X { void f ( X < T > & x ) { } } ; "
"} "
"template < > int X < int > :: Y ( 0 ) ;", tok(code));
}
void template35() { // #4074 - "A<'x'> a;" is not recognized as template instantiation
const char code[] = "template <char c> class A {};\n"
"A<'x'> a;";
ASSERT_EQUALS("A<'x'> a ; class A<'x'> { } ;", tok(code));
}
void template36() { // #4310 - Passing unknown template instantiation as template argument
const char code[] = "template <class T> struct X { T t; };\n"
"template <class C> struct Y { Foo < X< Bar<C> > > _foo; };\n" // <- Bar is unknown
"Y<int> bar;";
ASSERT_EQUALS("Y<int> bar ; "
"struct Y<int> { Foo < X<Bar<int>> > _foo ; } ; "
"struct X<Bar<int>> { Bar < int > t ; } ;",
tok(code));
}
void template37() { // #4544 - A<class B> a;
const char code[] = "class A { };\n"
"template<class T> class B {};\n"
"B<class A> b1;\n"
"B<A> b2;";
ASSERT_EQUALS("class A { } ; B<A> b1 ; B<A> b2 ; class B<A> { } ;",
tok(code));
}
void template_unhandled() {
// An unhandled template usage should be simplified..
ASSERT_EQUALS("x<int> ( ) ;", tok("x<int>();"));
}
void template38() { // #4832 - Crash on C++11 right angle brackets
const char code[] = "template <class T> class A {\n"
" T mT;\n"
"public:\n"
" void foo() {}\n"
"};\n"
"\n"
"int main() {\n"
" A<A<BLA>> gna1;\n"
" A<BLA> gna2;\n"
"}\n";
tok(code); // Don't crash or freeze
}
void template39() { // #4742 - Used to freeze in 1.60
const char code[] = "template<typename T> struct vector {"
" operator T() const;"
"};"
"void f() {"
" vector<vector<int>> v;"
" const vector<int> vi = static_cast<vector<int>>(v);"
"}";
tok(code);
}
void template40() { // #5055 - false negatives when there is template specialization outside struct
const char code[] = "struct A {"
" template<typename T> struct X { T t; };"
"};"
"template<> struct A::X<int> { int *t; };";
ASSERT_EQUALS("struct A { template < typename T > struct X { T t ; } ; } ;", tok(code));
}
void template41() { // #4710 - const in template instantiation not handled perfectly
const char code1[] = "template<class T> struct X { };\n"
"void f(const X<int> x) { }";
ASSERT_EQUALS("void f ( const X<int> x ) { } struct X<int> { } ;", tok(code1));
const char code2[] = "template<class T> T f(T t) { return t; }\n"
"int x() { return f<int>(123); }";
ASSERT_EQUALS("int x ( ) { return f<int> ( 123 ) ; } int f<int> ( int t ) { return t ; }", tok(code2));
}
void template42() { // #4878 cpcheck aborts in ext-blocks.cpp (clang testcode)
const char code[] = "template<typename ...Args>\n"
"int f0(Args ...args) {\n"
" return ^ {\n"
" return sizeof...(Args);\n"
" }() + ^ {\n"
" return sizeof...(args);\n"
" }();\n"
"}";
ASSERT_THROW(tok(code), InternalError);
}
void template43() { // #5097 - Assert due to '>>' in 'B<A<C>>' not being treated as end of template instantation
const char code[] = "template <typename T> struct C { };"
"template <typename T> struct D { static int f() { return C<T>::f(); } };"
"template <typename T> inline int f2() { return D<T>::f(); }"
"template <typename T> int f1(int x, T *) { int id = f2<T>(); return id; }"
"template <> struct C < B < A >> {"
" static int f() {"
" return f1 < B < A >> (0, reinterpret_cast< B<A> *>(E<void *>::Int(-1)));"
" }"
"};";
tok(code); // Don't assert
}
void template44() { // #5297
tok("template<class T> struct StackContainer {"
" void foo(int i) {"
" if (0 >= 1 && i<0) {}"
" }"
"};"
"template<class T> class ZContainer : public StackContainer<T> {};"
"struct FGSTensor {};"
"class FoldedZContainer : public ZContainer<FGSTensor> {};");
}
void template45() { // #5814
tok("namespace Constants { const int fourtytwo = 42; } "
"template <class T, int U> struct TypeMath { "
" static const int mult = sizeof(T) * U; "
"}; "
"template <class T> struct FOO { "
" enum { value = TypeMath<T, Constants::fourtytwo>::something }; "
"};");
ASSERT_EQUALS("", errout.str());
}
void template46() { // #5816
tok("template<class T, class U> struct A { static const int value = 0; }; "
"template <class T> struct B { "
" enum { value = A<typename T::type, int>::value }; "
"};");
ASSERT_EQUALS("", errout.str());
tok("template <class T, class U> struct A {}; "
"enum { e = sizeof(A<int, int>) }; "
"template <class T, class U> struct B {};");
ASSERT_EQUALS("", errout.str());
tok("template<class T, class U> struct A { static const int value = 0; }; "
"template<class T> struct B { typedef int type; }; "
"template <class T> struct C { "
" enum { value = A<typename B<T>::type, int>::value }; "
"};");
ASSERT_EQUALS("", errout.str());
}
void template47() { // #6023
tok("template <typename T1, typename T2 = T3<T1> > class C1 {}; "
"class C2 : public C1<C2> {};");
ASSERT_EQUALS("", errout.str());
}
void template48() { // #6134
tok("template <int> int f( { } ); "
"int foo = f<1>(0);");
ASSERT_EQUALS("", errout.str());
}
void template49() { // #6237
const char code[] = "template <classname T> class Fred { void f(); void g(); };\n"
"template <classname T> void Fred<T>::f() { }\n"
"template <classname T> void Fred<T>::g() { }\n"
"template void Fred<float>::f();\n"
"template void Fred<int>::g();\n";
const std::string expected("template < classname T > void Fred<T> :: f ( ) { } "
"template < classname T > void Fred<T> :: g ( ) { } "
"template void Fred<float> :: f ( ) ; "
"template void Fred<int> :: g ( ) ; "
"class Fred<T> { void f ( ) ; void g ( ) ; } ; "
"Fred<T> :: f ( ) { } "
"Fred<T> :: g ( ) { } "
"class Fred<float> { void f ( ) ; void g ( ) ; } ; "
"class Fred<int> { void f ( ) ; void g ( ) ; } ;");
ASSERT_EQUALS(expected, tok(code));
}
void template50() { // #4272
const char code[] = "template <classname T> class Fred { void f(); };\n"
"template <classname T> void Fred<T>::f() { }\n"
"template<> void Fred<float>::f() { }\n"
"template<> void Fred<int>::g() { }\n";
const std::string expected("template < classname T > void Fred<T> :: f ( ) { } "
"template < > void Fred<float> :: f ( ) { } "
"template < > void Fred<int> :: g ( ) { } "
"class Fred<T> { void f ( ) ; } ; "
"Fred<T> :: f ( ) { } "
"class Fred<float> { void f ( ) ; } ; "
"class Fred<int> { void f ( ) ; } ;");
ASSERT_EQUALS(expected, tok(code));
}
void template51() { // #6172
tok("template<int N, int ... M> struct A { "
" static void foo() { "
" int i = N; "
" } "
"}; "
"void bar() { "
" A<0>::foo(); "
"}");
}
void template_default_parameter() {
{
const char code[] = "template <class T, int n=3>\n"
"class A\n"
"{ T ar[n]; };\n"
"\n"
"void f()\n"
"{\n"
" A<int,2> a1;\n"
" A<int> a2;\n"
"}\n";
// The expected result..
const std::string expected("void f ( ) "
"{"
" A<int,2> a1 ;"
" A<int,3> a2 ; "
"} "
"class A<int,2> "
"{ int ar [ 2 ] ; } ; "
"class A<int,3> "
"{ int ar [ 3 ] ; } ;");
ASSERT_EQUALS(expected, tok(code));
}
{
const char code[] = "template <class T, int n1=3, int n2=2>\n"
"class A\n"
"{ T ar[n1+n2]; };\n"
"\n"
"void f()\n"
"{\n"
" A<int> a1;\n"
" A<int,3> a2;\n"
"}\n";
// The expected result..
const std::string expected("void f ( ) "
"{"
" A<int,3,2> a1 ;"
" A<int,3,2> a2 ; "
"} "
"class A<int,3,2> "
"{ int ar [ 5 ] ; } ;");
ASSERT_EQUALS(expected, tok(code));
}
{
const char code[] = "template <class T, int n=3>\n"
"class A\n"
"{ T ar[n]; };\n"
"\n"
"void f()\n"
"{\n"
" A<int,(int)2> a1;\n"
" A<int> a2;\n"
"}\n";
const std::string wanted("template < class T , int n >"
" class A"
" { T ar [ n ] ; } ;"
" void f ( )"
" {"
" A<int,(int)2> a1 ;"
" A<int,3> a2 ;"
" }"
" class A<int,2>"
" { int ar [ 2 ] ; }"
" class A<int,3>"
" { int ar [ 3 ] ; }");
const std::string current("void f ( ) "
"{ "
"A < int , ( int ) 2 > a1 ; "
"A<int,3> a2 ; "
"} "
"class A<int,3> "
"{ int ar [ 3 ] ; } ;"
);
TODO_ASSERT_EQUALS(wanted, current, tok(code));
}
{
const char code[] = "class A { }; "
"template<class T> class B { }; "
"template<class T1, class T2 = B<T1>> class C { }; "
"template<class T1 = A, typename T2 = B<A>> class D { };";
ASSERT_EQUALS("class A { } ; "
"template < class T > class B { } ; "
"template < class T1 , class T2 > class C { } ; "
"template < class T1 , typename T2 > class D { } ;", tok(code));
}
}
void template_default_type() {
const char code[] = "template <typename T, typename U=T>\n"
"class A\n"
"{\n"
"public:\n"
" void foo() {\n"
" int a;\n"
" a = static_cast<U>(a);\n"
" }\n"
"};\n"
"\n"
"template <typename T>\n"
"class B\n"
"{\n"
"protected:\n"
" A<int> a;\n"
"};\n"
"\n"
"class C\n"
" : public B<int>\n"
"{\n"
"};\n";
tok(code);
//ASSERT_EQUALS("[file1.cpp:15]: (error) Internal error: failed to instantiate template. The checking continues anyway.\n", errout.str());
ASSERT_EQUALS("", errout.str());
}
void template_typename() {
{
const char code[] = "template <class T>\n"
"void foo(typename T::t *)\n"
"{ }";
// The expected result..
const std::string expected("template < class T > void foo ( T :: t * ) { }");
ASSERT_EQUALS(expected, tok(code));
}
{
const char code[] = "void f() {\n"
" x(sizeof typename);\n"
" type = 0;\n"
"}";
ASSERT_EQUALS("void f ( ) { x ( sizeof ( typename ) ) ; type = 0 ; }", tok(code));
}
}
void template_constructor() {
// #3152 - if template constructor is removed then there might be
// "no constructor" false positives
const char code[] = "class Fred {\n"
" template<class T> explicit Fred(T t) { }\n"
"}";
ASSERT_EQUALS("class Fred { template < class T > explicit Fred ( T t ) { } }", tok(code));
// #3532
const char code2[] = "class Fred {\n"
" template<class T> Fred(T t) { }\n"
"}";
ASSERT_EQUALS("class Fred { template < class T > Fred ( T t ) { } }", tok(code2));
}
unsigned int templateParameters(const char code[]) {
Settings settings;
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp", "", true);
return TemplateSimplifier::templateParameters(tokenizer.tokens());
}
void templateParameters() {
// Test that the function TemplateSimplifier::templateParameters works
ASSERT_EQUALS(1U, templateParameters("<struct C> x;"));
ASSERT_EQUALS(1U, templateParameters("<union C> x;"));
ASSERT_EQUALS(1U, templateParameters("<const int> x;"));
ASSERT_EQUALS(1U, templateParameters("<int const *> x;"));
ASSERT_EQUALS(1U, templateParameters("<const struct C> x;"));
}
void templateParameters1() {
// #4169 - segmentation fault (invalid code)
const char code[] = "volatile true , test < test < #ifdef __ppc__ true ,";
// do not crash on invalid code
ASSERT_EQUALS(0, templateParameters(code));
}
// Helper function to unit test TemplateSimplifier::getTemplateNamePosition
int templateNamePositionHelper(const char code[], unsigned offset = 0) {
Settings settings;
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp", "", true);
const Token *tok = tokenizer.tokens();
for (unsigned i = 0 ; i < offset ; ++i)
tok = tok->next();
return TemplateSimplifier::getTemplateNamePosition(tok);
}
void templateNamePosition() {
// Template class
ASSERT_EQUALS(2, templateNamePositionHelper("template<class T> class A {};", 4));
ASSERT_EQUALS(2, templateNamePositionHelper("template<class T> struct A {};", 4));
ASSERT_EQUALS(2, templateNamePositionHelper("template<class T> class A : B {};", 4));
ASSERT_EQUALS(2, templateNamePositionHelper("template<class T> struct A : B {};", 4));
// Template function definitions
ASSERT_EQUALS(2, templateNamePositionHelper("template<class T> unsigned foo() { return 0; }", 4));
ASSERT_EQUALS(3, templateNamePositionHelper("template<class T> unsigned* foo() { return 0; }", 4));
ASSERT_EQUALS(3, templateNamePositionHelper("template<class T> const unsigned foo() { return 0; }", 4));
ASSERT_EQUALS(4, templateNamePositionHelper("template<class T> const unsigned& foo() { return 0; }", 4));
// Class template members
ASSERT_EQUALS(4, templateNamePositionHelper("class A { template<class T> unsigned foo(); }; "
"template<class T> unsigned A::foo() { return 0; }", 19));
ASSERT_EQUALS(5, templateNamePositionHelper("class A { template<class T> const unsigned foo(); }; "
"template<class T> const unsigned A::foo() { return 0; }", 20));
TODO_ASSERT_EQUALS(7, -1, templateNamePositionHelper("class A { class B { template<class T> const unsigned foo(); }; } ; "
"template<class T> const unsigned A::B::foo() { return 0; }", 25));
// Template class member
TODO_ASSERT_EQUALS(7, -1, templateNamePositionHelper("template<class T> class A { unsigned foo(); }; "
"template<class T> unsigned A<T>::foo() { return 0; }", 19));
}
};
REGISTER_TEST(TestSimplifyTemplate)