Qpid Proton C++ API  0.32.0
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/null.hpp"
26 
27 #include <proton/type_compat.h>
28 
31 
32 namespace proton {
33 
37 class scalar : public scalar_base {
38  public:
40  PN_CPP_EXTERN scalar() {}
41 
43  template <class T> scalar(const T& x) { *this = x; }
44 
46  template <class T> scalar& operator=(const T& x) { put(x); return *this; }
47 
49  void clear() { *this = null(); }
50 };
51 
60 template<class T> T get(const scalar& s) { return internal::get<T>(s); }
61 
72 template<class T> T coerce(const scalar& x) { return internal::coerce<T>(x); }
73 
74 
85 template<class T> T coerce(scalar& x) { return internal::coerce<T>(x); }
86 
87 } // proton
88 
89 #endif // PROTON_SCALAR_HPP
proton::scalar
A holder for an instance of any scalar AMQP type.
Definition: scalar.hpp:37
proton::scalar_base
The base class for scalar types.
Definition: scalar_base.hpp:60
null.hpp
The type of the AMQP null value.
proton::scalar::clear
void clear()
Clear the scalar, making it empty().
Definition: scalar.hpp:49
proton::scalar::scalar
scalar(const T &x)
Construct from any scalar type.
Definition: scalar.hpp:43
proton::scalar::operator=
scalar & operator=(const T &x)
Assign from any scalar type.
Definition: scalar.hpp:46
scalar_base.hpp
The base class for scalar types.
proton::coerce
T coerce(const annotation_key &x)
Get the binary value or throw conversion_error.
Definition: annotation_key.hpp:83
proton::get
T get(const scalar &s)
Get a contained value of type T.
Definition: scalar.hpp:60
proton::scalar::scalar
scalar()
Create an empty scalar.
Definition: scalar.hpp:40
proton
The main Proton namespace.
Definition: annotation_key.hpp:33