Qpid Proton C++ API  0.18.1
scalar.hpp
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1 #ifndef PROTON_SCALAR_HPP
2 #define PROTON_SCALAR_HPP
3 
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22 
23 #include "./scalar_base.hpp"
24 
25 #include <proton/type_compat.h>
26 
29 
30 namespace proton {
31 
35 class scalar : public scalar_base {
36  public:
38  PN_CPP_EXTERN scalar() {}
39 
41  template <class T> scalar(const T& x) { *this = x; }
42 
44  template <class T> scalar& operator=(const T& x) { put(x); return *this; }
45 
47  void clear() { *this = null(); }
48 };
49 
58 template<class T> T get(const scalar& s) { return internal::get<T>(s); }
59 
70 template<class T> T coerce(const scalar& x) { return internal::coerce<T>(x); }
71 
72 
83 template<class T> T coerce(scalar& x) { return internal::coerce<T>(x); }
84 
85 } // proton
86 
87 #endif // PROTON_SCALAR_HPP
A holder for an instance of any scalar AMQP type.
Definition: scalar.hpp:35
T coerce(const scalar &x)
Coerce the contained value to type T.
Definition: scalar.hpp:70
The base class for scalar types.
Definition: scalar_base.hpp:60
scalar & operator=(const T &x)
Assign from any scalar type.
Definition: scalar.hpp:44
The base class for scalar types.
void clear()
Clear the scalar, making it empty().
Definition: scalar.hpp:47
scalar(const T &x)
Construct from any scalar type.
Definition: scalar.hpp:41
scalar()
Create an empty scalar.
Definition: scalar.hpp:38
The main Proton namespace.
Definition: annotation_key.hpp:33