Pg to bun (#148)

* start moving to bun

* changing more stuff

* more

* and yet more

* tests passing

* seems stable now

* more big changes

* small fix

* little fixes

vendor/github.com/uptrace/bun/internal/map_key.go

@@ -0,0 +1,67 @@
+package internal
+
+import "reflect"
+
+var ifaceType = reflect.TypeOf((*interface{})(nil)).Elem()
+
+type MapKey struct {
+	iface interface{}
+}
+
+func NewMapKey(is []interface{}) MapKey {
+	return MapKey{
+		iface: newMapKey(is),
+	}
+}
+
+func newMapKey(is []interface{}) interface{} {
+	switch len(is) {
+	case 1:
+		ptr := new([1]interface{})
+		copy((*ptr)[:], is)
+		return *ptr
+	case 2:
+		ptr := new([2]interface{})
+		copy((*ptr)[:], is)
+		return *ptr
+	case 3:
+		ptr := new([3]interface{})
+		copy((*ptr)[:], is)
+		return *ptr
+	case 4:
+		ptr := new([4]interface{})
+		copy((*ptr)[:], is)
+		return *ptr
+	case 5:
+		ptr := new([5]interface{})
+		copy((*ptr)[:], is)
+		return *ptr
+	case 6:
+		ptr := new([6]interface{})
+		copy((*ptr)[:], is)
+		return *ptr
+	case 7:
+		ptr := new([7]interface{})
+		copy((*ptr)[:], is)
+		return *ptr
+	case 8:
+		ptr := new([8]interface{})
+		copy((*ptr)[:], is)
+		return *ptr
+	case 9:
+		ptr := new([9]interface{})
+		copy((*ptr)[:], is)
+		return *ptr
+	case 10:
+		ptr := new([10]interface{})
+		copy((*ptr)[:], is)
+		return *ptr
+	default:
+	}
+
+	at := reflect.New(reflect.ArrayOf(len(is), ifaceType)).Elem()
+	for i, v := range is {
+		*(at.Index(i).Addr().Interface().(*interface{})) = v
+	}
+	return at.Interface()
+}