Create & Init Project...

app/service/main/relation/model/attr.go

@@ -0,0 +1,51 @@
+package model
+
+// attribute bit. priority black > following > whisper > no relation.
+const (
+	AttrNoRelation = uint32(0)
+	AttrWhisper    = uint32(1)
+	AttrFollowing  = uint32(1) << 1
+	AttrFriend     = uint32(1) << 2
+	AttrBlack      = uint32(1) << 7
+	// 128，129,130 变为 0 时候，status = 1
+	StatusOK  = 0
+	StatusDel = 1
+)
+
+// relation act type.
+const (
+	ActAddFollowing = int8(1)
+	ActDelFollowing = int8(2)
+	ActAddWhisper   = int8(3)
+	ActDelWhisper   = int8(4)
+	ActAddBlack     = int8(5)
+	ActDelBalck     = int8(6)
+	ActDelFollower  = int8(7)
+)
+
+// Attr get real attribute by the specified priority.
+func Attr(attribute uint32) uint32 {
+	if attribute&AttrBlack > 0 {
+		return AttrBlack
+	}
+	if attribute&AttrFriend > 0 {
+		return AttrFriend
+	}
+	if attribute&AttrFollowing > 0 {
+		return AttrFollowing
+	}
+	if attribute&AttrWhisper > 0 {
+		return AttrWhisper
+	}
+	return AttrNoRelation
+}
+
+// SetAttr set attribute.
+func SetAttr(attribute uint32, mask uint32) uint32 {
+	return attribute | mask
+}
+
+// UnsetAttr unset attribute.
+func UnsetAttr(attribute uint32, mask uint32) uint32 {
+	return attribute & ^mask // ^ 按位取反
+}