Supports unnamed NBT field

chat/message.go

@@ -51,7 +51,7 @@ const (
 
 // Message is a message sent by other
 type Message struct {
-	Text string `json:"text" nbt:"text"`
+	Text string `json:"text" nbt:"text,default"`
 
 	Bold          bool `json:"bold,omitempty" nbt:"bold,omitempty"`                   // 粗体
 	Italic        bool `json:"italic,omitempty" nbt:"italic,omitempty"`               // 斜体

chat/nbtmessage_test.go

@@ -0,0 +1,21 @@
+package chat
+
+import (
+	"github.com/Tnze/go-mc/nbt"
+	"os"
+	"testing"
+)
+
+func TestNbtExtraText(t *testing.T) {
+	//SNBT: {extra: [{extra: [{color: "dark_gray",text: "> "},{: "test"}],text: ""}],text: ""}
+	f, _ := os.Open("testdata/chat.nbt")
+	d := nbt.NewDecoder(f)
+	var m Message
+	if _, err := d.Decode(&m); err != nil {
+		t.Fatal(err)
+	}
+
+	if m.ClearString() != "> test" {
+		t.Fatalf("gets %q, wants %q", m.ClearString(), "> test")
+	}
+}

nbt/decode.go

@@ -387,7 +387,7 @@ func (d *Decoder) unmarshal(val reflect.Value, tagType byte) error {
 					// Fall back to linear search.
 					for i := range fields.list {
 						ff := &fields.list[i]
-						if strings.EqualFold(ff.name, tn) {
+						if strings.EqualFold(ff.name, tn) || ff.asDefault && tn == "" {
 							f = ff
 							break
 						}

nbt/typeinfo.go

@@ -19,6 +19,7 @@ type field struct {
 	index     []int
 	typ       reflect.Type
 	omitEmpty bool
+	asDefault bool
 	asList    bool
 }
 
@@ -105,7 +106,7 @@ func typeFields(t reflect.Type) (tInfo structFields) {
 				}
 
 				// parse options
-				var omitEmpty, asList bool
+				var omitEmpty, asList, asDefault bool
 				for opts != "" {
 					var name string
 					name, opts, _ = strings.Cut(opts, ",")
@@ -114,6 +115,8 @@ func typeFields(t reflect.Type) (tInfo structFields) {
 						omitEmpty = true
 					case "list":
 						asList = true
+					case "default":
+						asDefault = true
 					}
 				}
 				// Deprecated: use `nbt:",list"` instead.
@@ -133,6 +136,7 @@ func typeFields(t reflect.Type) (tInfo structFields) {
 						index:     index,
 						typ:       ft,
 						omitEmpty: omitEmpty,
+						asDefault: asDefault,
 						asList:    asList,
 					}