Eliminate SWIG_SetZval()

$needNewFlow is now only used for a different hack in a directorout
typemap.

Lib/php/php.swg

@@ -370,12 +370,12 @@
               SWIGTYPE &,
               SWIGTYPE &&
 %{
-  SWIG_SetZval($result, $needNewFlow, $owner, (void *)result, $1_descriptor);
+  SWIG_SetPointerZval($result, (void *)$1, $1_descriptor, $owner);
 %}
 
 %typemap(out) SWIGTYPE *const&
 %{
-  SWIG_SetZval(return_value, $needNewFlow, $owner, (void *)*$1, $*1_descriptor);
+  SWIG_SetPointerZval($result, (void *)*$1, $*1_descriptor, $owner);
 %}
 
 %typemap(directorin) SWIGTYPE *,
@@ -403,22 +403,19 @@
               SWIGTYPE &DYNAMIC
 {
   swig_type_info *ty = SWIG_TypeDynamicCast($1_descriptor, (void **) &$1);
-  SWIG_SetPointerZval(return_value, (void *)$1, ty, $owner);
+  SWIG_SetPointerZval($result, (void *)$1, ty, $owner);
 }
 
 %typemap(out) SWIGTYPE
+{
 #ifdef __cplusplus
-{
   $&1_ltype resultobj = new $1_ltype((const $1_ltype &) $1);
-  SWIG_SetZval(return_value, $needNewFlow, 1, (void *)resultobj, $&1_descriptor);
-}
 #else
-{
   $&1_ltype resultobj = ($&1_ltype) emalloc(sizeof($1_type));
   memcpy(resultobj, &$1, sizeof($1_type));
-  SWIG_SetZval(return_value, $needNewFlow, 1, (void *)resultobj, $&1_descriptor);
-}
 #endif
+  SWIG_SetPointerZval($result, (void *)resultobj, $&1_descriptor, 1);
+}
 
 %typemap(directorin) SWIGTYPE
 %{

Lib/php/phprun.swg

@@ -101,13 +101,20 @@ SWIG_SetPointerZval(zval *z, void *ptr, swig_type_info *type, int newobject) {
   }
 
   {
-    zend_class_entry *ce = (zend_class_entry*)(type->clientdata);
+    zend_object *obj;
-    zend_object *obj = ce->create_object(ce);
+    if (Z_TYPE_P(z) == IS_OBJECT) {
+      /* The PHP object is already initialised - this is the case when wrapping
+       * the return value from a PHP constructor. */
+      obj = Z_OBJ_P(z);
+    } else {
+      zend_class_entry *ce = (zend_class_entry*)(type->clientdata);
+      obj = ce->create_object(ce);
+      ZVAL_OBJ(z, obj);
+    }
     swig_object_wrapper *value = php_fetch_object(obj);
     value->ptr = ptr;
     value->newobject = (newobject & 1);
     value->type = type;
-    ZVAL_OBJ(z, obj);
   }
 }
 
@@ -168,25 +175,6 @@ SWIG_ConvertPtr(zval *z, void **ptr, swig_type_info *ty, int flags) {
   return -1;
 }
 
-static void
-SWIG_SetZval(zval *zv, int newFlow, int newobject, void *ptr, swig_type_info *type) {
-  if (newFlow > 1) {
-    if (!ptr) {
-      ZVAL_NULL(zv);
-      return;
-    }
-
-    {
-      swig_object_wrapper * obj = SWIG_Z_FETCH_OBJ_P(zv);
-      obj->ptr = ptr;
-      obj->newobject = newobject;
-      obj->type = type;
-    }
-  } else {
-    SWIG_SetPointerZval(zv, ptr, type, newobject);
-  }
-}
-
 static const char const_name[] = "swig_runtime_data_type_pointer";
 static swig_module_info *SWIG_Php_GetModule() {
   zval *pointer = zend_get_constant_str(const_name, sizeof(const_name) - 1);

Source/Modules/php.cxx

@@ -1402,7 +1402,6 @@ public:
       Replaceall(tm, "$input", Swig_cresult_name());
       Replaceall(tm, "$result", php_constructor ? "ZEND_THIS" : "return_value");
       Replaceall(tm, "$owner", newobject ? "1" : "0");
-      Replaceall(tm, "$needNewFlow", php_constructor && is_class(d) ? "2" : "0");
       Printf(f->code, "%s\n", tm);
     } else {
       Swig_warning(WARN_TYPEMAP_OUT_UNDEF, input_file, line_number, "Unable to use return type %s in function %s.\n", SwigType_str(d, 0), name);