PROTON-1238: [C++ binding] Add fallback operator<< for wrapped proton-c objects
diff --git a/proton-c/bindings/cpp/include/proton/internal/object.hpp b/proton-c/bindings/cpp/include/proton/internal/object.hpp
index 330ebbe..78a990c 100644
--- a/proton-c/bindings/cpp/include/proton/internal/object.hpp
+++ b/proton-c/bindings/cpp/include/proton/internal/object.hpp
@@ -27,6 +27,7 @@
#include "./comparable.hpp"
#include <memory>
+#include <string>
namespace proton {
@@ -38,6 +39,7 @@
protected:
PN_CPP_EXTERN static void incref(void* p);
PN_CPP_EXTERN static void decref(void* p);
+ PN_CPP_EXTERN static std::string inspect(void* p);
};
template <class T> class pn_ptr : private pn_ptr_base, private comparable<pn_ptr<T> > {
@@ -63,6 +65,8 @@
explicit operator bool() const { return !!ptr_; }
#endif
+ std::string inspect() const { return pn_ptr_base::inspect(ptr_); }
+
static pn_ptr take_ownership(T* p) { return pn_ptr<T>(p, true); }
private:
@@ -96,6 +100,7 @@
friend bool operator==(const object& a, const object& b) { return a.object_ == b.object_; }
friend bool operator<(const object& a, const object& b) { return a.object_ < b.object_; }
+ friend std::ostream& operator<<(std::ostream& o, const object& a) { o << a.object_.inspect(); return o; }
template <class U> friend class proton::thread_safe;
};
diff --git a/proton-c/bindings/cpp/src/object.cpp b/proton-c/bindings/cpp/src/object.cpp
index f881c637..2f3a348 100644
--- a/proton-c/bindings/cpp/src/object.cpp
+++ b/proton-c/bindings/cpp/src/object.cpp
@@ -31,4 +31,10 @@
if (p) ::pn_decref(const_cast<void*>(p));
}
+std::string pn_ptr_base::inspect(void* p) {
+ if (!p) return std::string();
+ ::pn_string_t* s = ::pn_string(NULL);
+ (void) ::pn_inspect(p, s);
+ return std::string(pn_string_get(s));
+}
}}
