Merge pull request kubernetes#215 from Daimler/tobiasgiese/add-pointe…

…r-int

Add int pointer function

pointer/pointer.go

@@ -46,6 +46,24 @@ func AllPtrFieldsNil(obj interface{}) bool {
 	return true
 }
 
+// Int returns a pointer to an int
+func Int(i int) *int {
+	return &i
+}
+
+var IntPtr = Int // for back-compat
+
+// IntDeref dereferences the int ptr and returns it if not nil, or else
+// returns def.
+func IntDeref(ptr *int, def int) int {
+	if ptr != nil {
+		return *ptr
+	}
+	return def
+}
+
+var IntPtrDerefOr = IntDeref // for back-compat
+
 // Int32 returns a pointer to an int32.
 func Int32(i int32) *int32 {
 	return &i

pointer/pointer_test.go

@@ -69,6 +69,34 @@ func TestAllPtrFieldsNil(t *testing.T) {
 	}
 }
 
+func TestInt(t *testing.T) {
+	val := int(0)
+	ptr := Int(val)
+	if *ptr != val {
+		t.Errorf("expected %d, got %d", val, *ptr)
+	}
+
+	val = int(1)
+	ptr = Int(val)
+	if *ptr != val {
+		t.Errorf("expected %d, got %d", val, *ptr)
+	}
+}
+
+func TestIntDeref(t *testing.T) {
+	var val, def int = 1, 0
+
+	out := IntDeref(&val, def)
+	if out != val {
+		t.Errorf("expected %d, got %d", val, out)
+	}
+
+	out = IntDeref(nil, def)
+	if out != def {
+		t.Errorf("expected %d, got %d", def, out)
+	}
+}
+
 func TestInt32(t *testing.T) {
 	val := int32(0)
 	ptr := Int32(val)