/**
 * refcount.i
 *
 * Common refcounting module applicable for all language targets
 */

// SWIG is refcounting aware and since our C++ classes follow a refcounting scheme
// we can tap into this feature
//
// NOTE: We don't implement %feature("ref") because anything from the native boundary is already AddRef'd and the
// ref feature assumes refcounted objects that were just instantiated start off with a reference count of 0, ours 
// start at 1. (based from their refcounting example: https://swig.org/Doc4.0/SWIGDocumentation.html#SWIGPlus_ref_unref)
//
// All the managed layer should do when Disposed or GC'd is to make sure it is released
%feature("ref")   MgDisposable ""
%feature("unref") MgDisposable "ReleaseObject($this);"

%runtime %{
#include "Foundation.h"

#if defined(REFCOUNTING_DIAGNOSTICS)
INT32 NewObjectHook(MgDisposable* obj)
{
    if (NULL != obj)
    {
        INT32 rc = obj->GetRefCount();
    #if defined(SWIGPHP)
        zend_printf("[zend]: New instance of (%s): %p - %d\n", obj->GetMultiByteClassName(), (void*)obj, rc);
    #else
        printf("[native]: New instance of (%s): %p - %d\n", obj->GetMultiByteClassName(), (void*)obj, rc);
    #endif
        return rc;
    }
    return -1;
}

INT32 RefCountHook(MgDisposable* obj)
{
    if (NULL != obj)
    {
        INT32 rc = obj->GetRefCount();
    #if defined(SWIGPHP)
        zend_printf("[zend]: Ref-count for instance of (%s): %p - %d\n", obj->GetMultiByteClassName(), (void*)obj, rc);
    #else
        printf("[native]: Ref-count for instance of (%s): %p - %d\n", obj->GetMultiByteClassName(), (void*)obj, rc);
    #endif
        return rc;
    }
    return -1;
}

void ReleaseObject(MgDisposable* obj)
{
    if (NULL != obj)
    {
        INT32 rc = obj->GetRefCount();
    #if defined(SWIGPHP)
        zend_printf("[zend]: Releasing instance of (%s): %p (%d -> %d)\n", obj->GetMultiByteClassName(), (void*)obj, rc, rc - 1);
    #else
        printf("[native]: Releasing instance of (%s): %p (%d -> %d)\n", obj->GetMultiByteClassName(), (void*)obj, rc, rc - 1);
    #endif
    }
    SAFE_RELEASE(obj);
}
#else
#define NewObjectHook(obj)
#define RefCountHook(obj)
void ReleaseObject(MgDisposable* obj)
{
    SAFE_RELEASE(obj);
}
#endif
%}