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Make is_convertible more robust and conformant to std::is_convertible

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This commit is contained in:
Gael Guennebaud
2018-07-12 09:57:19 +02:00
parent 8a5955a052
commit 21cf4a1a8b
2 changed files with 36 additions and 12 deletions
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36
test/meta.cpp
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@@ -19,6 +19,14 @@ struct FooReturnType {
typedef int ReturnType;
};
struct MyInterface {
virtual void func() = 0;
virtual ~MyInterface() {}
};
struct MyImpl : public MyInterface {
void func() {}
};
void test_meta()
{
VERIFY((internal::conditional<(3<4),internal::true_type, internal::false_type>::type::value));
@@ -62,14 +70,19 @@ void test_meta()
VERIFY(( internal::is_same<const float,internal::remove_pointer<const float*>::type >::value));
VERIFY(( internal::is_same<float,internal::remove_pointer<float* const >::type >::value));
VERIFY(( internal::is_convertible<float,double>::value ));
VERIFY(( internal::is_convertible<int,double>::value ));
VERIFY(( internal::is_convertible<double,int>::value ));
VERIFY((!internal::is_convertible<std::complex<double>,double>::value ));
VERIFY(( internal::is_convertible<Array33f,Matrix3f>::value ));
// is_convertible
STATIC_CHECK(( internal::is_convertible<float,double>::value ));
STATIC_CHECK(( internal::is_convertible<int,double>::value ));
STATIC_CHECK(( internal::is_convertible<int, short>::value ));
STATIC_CHECK(( internal::is_convertible<short, int>::value ));
STATIC_CHECK(( internal::is_convertible<double,int>::value ));
STATIC_CHECK(( internal::is_convertible<double,std::complex<double> >::value ));
STATIC_CHECK((!internal::is_convertible<std::complex<double>,double>::value ));
STATIC_CHECK(( internal::is_convertible<Array33f,Matrix3f>::value ));
// VERIFY((!internal::is_convertible<Matrix3f,Matrix3d>::value )); //does not work because the conversion is prevented by a static assertion
VERIFY((!internal::is_convertible<Array33f,int>::value ));
VERIFY((!internal::is_convertible<MatrixXf,float>::value ));
STATIC_CHECK((!internal::is_convertible<Array33f,int>::value ));
STATIC_CHECK((!internal::is_convertible<MatrixXf,float>::value ));
{
float f;
MatrixXf A, B;
@@ -80,6 +93,15 @@ void test_meta()
VERIFY(( check_is_convertible(A*B, A) ));
}
STATIC_CHECK(( !internal::is_convertible<MyInterface, MyImpl>::value ));
STATIC_CHECK(( !internal::is_convertible<MyImpl, MyInterface>::value ));
STATIC_CHECK(( internal::is_convertible<MyImpl, const MyInterface&>::value ));
{
int i;
VERIFY(( check_is_convertible(fix<3>(), i) ));
VERIFY((!check_is_convertible(i, fix<DynamicIndex>()) ));
}
VERIFY(( internal::has_ReturnType<FooReturnType>::value ));
VERIFY(( internal::has_ReturnType<ScalarBinaryOpTraits<int,int> >::value ));
VERIFY(( !internal::has_ReturnType<MatrixXf>::value ));