QxOrm 1.4.9
C++ Object Relational Mapping library
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is_ptr_base_of.h
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31
32#ifndef _QX_IS_PTR_BASE_OF_H_
33#define _QX_IS_PTR_BASE_OF_H_
34
35#ifdef _MSC_VER
36#pragma once
37#endif
38
46namespace qx {
47namespace trait {
48
53template <typename B, typename D>
55{
56
57private:
58
59 template <typename V, typename W>
60 static typename std::conditional<std::is_base_of<V, W>::value, char, int>::type removePtr(const volatile V * const volatile, const volatile W * const volatile);
61
62 static int removePtr(...);
63 static B b;
64 static D d;
65
66public:
67
68 enum { value = (std::is_pointer<B>::value && std::is_pointer<D>::value && (sizeof(qx::trait::is_ptr_base_of<B, D>::removePtr(b, d)) == sizeof(char))) };
69
70 typedef typename std::conditional<qx::trait::is_ptr_base_of<B, D>::value, std::true_type, std::false_type>::type type;
71
72};
73
74} // namespace trait
75} // namespace qx
76
77#endif // _QX_IS_PTR_BASE_OF_H_
qx::trait::is_ptr_base_of<B, D>::value : return true if B and D are pointer type and (*B) is a base c...
static std::conditional< std::is_base_of< V, W >::value, char, int >::type removePtr(const volatile V *const volatile, const volatile W *const volatile)
std::conditional< qx::trait::is_ptr_base_of< B, D >::value, std::true_type, std::false_type >::type type
static int removePtr(...)
Root namespace for all QxOrm library features.