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bug #969: workaround abiguous calls to Ref using enable_if.

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This commit is contained in:
Gael Guennebaud 2015-03-06 17:51:31 +01:00
parent d23fcc0672
commit 14a5f135a3
2 changed files with 35 additions and 5 deletions
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16
Eigen/src/Core/Ref.h
View File

@ -105,7 +105,8 @@ struct traits<Ref<_PlainObjectType, _Options, _StrideType> >
OuterStrideMatch = Derived::IsVectorAtCompileTime
|| int(StrideType::OuterStrideAtCompileTime)==int(Dynamic) || int(StrideType::OuterStrideAtCompileTime)==int(Derived::OuterStrideAtCompileTime),
AlignmentMatch = (_Options!=Aligned) || ((PlainObjectType::Flags&AlignedBit)==0) || ((traits<Derived>::Flags&AlignedBit)==AlignedBit),
MatchAtCompileTime = HasDirectAccess && StorageOrderMatch && InnerStrideMatch && OuterStrideMatch && AlignmentMatch
ScalarTypeMatch = internal::is_same<typename PlainObjectType::Scalar, typename Derived::Scalar>::value,
MatchAtCompileTime = HasDirectAccess && StorageOrderMatch && InnerStrideMatch && OuterStrideMatch && AlignmentMatch && ScalarTypeMatch
};
typedef typename internal::conditional<MatchAtCompileTime,internal::true_type,internal::false_type>::type type;
};
@ -184,9 +185,11 @@ protected:
template<typename PlainObjectType, int Options, typename StrideType> class Ref
: public RefBase<Ref<PlainObjectType, Options, StrideType> >
{
private:
typedef internal::traits<Ref> Traits;
template<typename Derived>
EIGEN_DEVICE_FUNC inline Ref(const PlainObjectBase<Derived>& expr);
EIGEN_DEVICE_FUNC inline Ref(const PlainObjectBase<Derived>& expr,
typename internal::enable_if<bool(Traits::template match<Derived>::MatchAtCompileTime),Derived>::type* = 0);
public:
typedef RefBase<Ref> Base;
@ -195,13 +198,15 @@ template<typename PlainObjectType, int Options, typename StrideType> class Ref
#ifndef EIGEN_PARSED_BY_DOXYGEN
template<typename Derived>
EIGEN_DEVICE_FUNC inline Ref(PlainObjectBase<Derived>& expr)
EIGEN_DEVICE_FUNC inline Ref(PlainObjectBase<Derived>& expr,
typename internal::enable_if<bool(Traits::template match<Derived>::MatchAtCompileTime),Derived>::type* = 0)
{
EIGEN_STATIC_ASSERT(bool(Traits::template match<Derived>::MatchAtCompileTime), STORAGE_LAYOUT_DOES_NOT_MATCH);
Base::construct(expr.derived());
}
template<typename Derived>
EIGEN_DEVICE_FUNC inline Ref(const DenseBase<Derived>& expr)
EIGEN_DEVICE_FUNC inline Ref(const DenseBase<Derived>& expr,
typename internal::enable_if<bool(Traits::template match<Derived>::MatchAtCompileTime),Derived>::type* = 0)
#else
template<typename Derived>
inline Ref(DenseBase<Derived>& expr)
@ -228,7 +233,8 @@ template<typename TPlainObjectType, int Options, typename StrideType> class Ref<
EIGEN_DENSE_PUBLIC_INTERFACE(Ref)
template<typename Derived>
EIGEN_DEVICE_FUNC inline Ref(const DenseBase<Derived>& expr)
EIGEN_DEVICE_FUNC inline Ref(const DenseBase<Derived>& expr,
typename internal::enable_if<bool(Traits::template match<Derived>::ScalarTypeMatch),Derived>::type* = 0)
{
// std::cout << match_helper<Derived>::HasDirectAccess << "," << match_helper<Derived>::OuterStrideMatch << "," << match_helper<Derived>::InnerStrideMatch << "\n";
// std::cout << int(StrideType::OuterStrideAtCompileTime) << " - " << int(Derived::OuterStrideAtCompileTime) << "\n";

24
test/ref.cpp
View File

@ -228,6 +228,28 @@ void call_ref()
VERIFY_EVALUATION_COUNT( call_ref_7(c,c), 0);
}
typedef Matrix<double,Dynamic,Dynamic,RowMajor> RowMatrixXd;
int test_ref_overload_fun1(Ref<MatrixXd> ) { return 1; }
int test_ref_overload_fun1(Ref<RowMatrixXd> ) { return 2; }
int test_ref_overload_fun1(Ref<MatrixXf> ) { return 3; }
int test_ref_overload_fun2(Ref<const MatrixXd> ) { return 4; }
int test_ref_overload_fun2(Ref<const MatrixXf> ) { return 5; }
// See also bug 969
void test_ref_overloads()
{
MatrixXd Ad, Bd;
RowMatrixXd rAd, rBd;
VERIFY( test_ref_overload_fun1(Ad)==1 );
VERIFY( test_ref_overload_fun1(rAd)==2 );
MatrixXf Af, Bf;
VERIFY( test_ref_overload_fun2(Ad)==4 );
VERIFY( test_ref_overload_fun2(Ad+Bd)==4 );
VERIFY( test_ref_overload_fun2(Af+Bf)==5 );
}
void test_ref()
{
for(int i = 0; i < g_repeat; i++) {
@ -248,4 +270,6 @@ void test_ref()
CALL_SUBTEST_5( ref_matrix(MatrixXi(internal::random<int>(1,10),internal::random<int>(1,10))) );
CALL_SUBTEST_6( call_ref() );
}
CALL_SUBTEST_7( test_ref_overloads() );
}