Blaze  3.6
IsDeclExpr.h
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1 //=================================================================================================
33 //=================================================================================================
34 
35 #ifndef _BLAZE_MATH_TYPETRAITS_ISDECLEXPR_H_
36 #define _BLAZE_MATH_TYPETRAITS_ISDECLEXPR_H_
37 
38 
39 //*************************************************************************************************
40 // Includes
41 //*************************************************************************************************
42 
45 
46 
47 namespace blaze {
48 
49 //=================================================================================================
50 //
51 // CLASS DEFINITION
52 //
53 //=================================================================================================
54 
55 //*************************************************************************************************
60 template< typename T >
61 struct IsDeclExprHelper
62 {
63  private:
64  //**********************************************************************************************
65  static T* create();
66 
67  template< typename U >
68  static TrueType test( const DeclExpr<U>* );
69 
70  template< typename U >
71  static TrueType test( const volatile DeclExpr<U>* );
72 
73  static FalseType test( ... );
74  //**********************************************************************************************
75 
76  public:
77  //**********************************************************************************************
78  using Type = decltype( test( create() ) );
79  //**********************************************************************************************
80 };
82 //*************************************************************************************************
83 
84 
85 //*************************************************************************************************
96 template< typename T >
97 struct IsDeclExpr
98  : public IsDeclExprHelper<T>::Type
99 {};
100 //*************************************************************************************************
101 
102 
103 //*************************************************************************************************
108 template< typename T >
109 struct IsDeclExpr<T&>
110  : public FalseType
111 {};
113 //*************************************************************************************************
114 
115 
116 //*************************************************************************************************
129 template< typename T >
131 //*************************************************************************************************
132 
133 } // namespace blaze
134 
135 #endif
BoolConstant< false > FalseType
Type/value traits base class.The FalseType class is used as base class for type traits and value trai...
Definition: IntegralConstant.h:121
Generic wrapper for a compile time constant integral value.The IntegralConstant class template repres...
Definition: IntegralConstant.h:72
BoolConstant< true > TrueType
Type traits base class.The TrueType class is used as base class for type traits and value traits that...
Definition: IntegralConstant.h:132
Compile time check whether the given type is a declaration expression template.This type trait class ...
Definition: IsDeclExpr.h:97
Namespace of the Blaze C++ math library.
Definition: Blaze.h:58
Header file for the DeclExpr base class.
Header file for the IntegralConstant class template.
constexpr bool IsDeclExpr_v
Auxiliary variable template for the IsDeclExpr type trait.The IsDeclExpr_v variable template provides...
Definition: IsDeclExpr.h:130