Anonymous field handling for NBT

nbt/special_test.go

@@ -0,0 +1,82 @@
+package nbt_test
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/Tnze/go-mc/nbt"
+)
+
+func ExampleMarshal_anonymousStructField() {
+	type A struct{ F string }
+	type B struct{ E string }
+	type S struct {
+		A           // anonymous fields are usually marshaled as if their inner exported fields were fields in the outer struct
+		B `nbt:"B"` // anonymous field, but with an explicit tag name specified
+	}
+
+	var val S
+	val.F = "Tnze"
+	val.E = "GoMC"
+
+	data, err := nbt.Marshal(val)
+	if err != nil {
+		panic(err)
+	}
+
+	var snbt nbt.StringifiedMessage
+	if err := nbt.Unmarshal(data, &snbt); err != nil {
+		panic(err)
+	}
+	fmt.Println(snbt)
+
+	// Output:
+	// {F:Tnze,B:{E:GoMC}}
+}
+
+func ExampleUnmarshal_anonymousStructField() {
+	type A struct{ F string }
+	type B struct{ E string }
+	type S struct {
+		A           // anonymous fields are usually marshaled as if their inner exported fields were fields in the outer struct
+		B `nbt:"B"` // anonymous field, but with an explicit tag name specified
+	}
+
+	data, err := nbt.Marshal(nbt.StringifiedMessage(`{F:Tnze,B:{E:GoMC}}`))
+	if err != nil {
+		panic(err)
+	}
+
+	var val S
+	if err := nbt.Unmarshal(data, &val); err != nil {
+		panic(err)
+	}
+	fmt.Println(val.F)
+	fmt.Println(val.E)
+
+	// Output:
+	// Tnze
+	// GoMC
+}
+
+func TestMarshal_anonymousPointerNesting(t *testing.T) {
+	type A struct{ T string }
+	type B struct{ *A }
+	type C struct{ B }
+
+	val := C{B{&A{"Tnze"}}}
+
+	data, err := nbt.Marshal(val)
+	if err != nil {
+		panic(err)
+	}
+
+	var snbt nbt.StringifiedMessage
+	if err := nbt.Unmarshal(data, &snbt); err != nil {
+		panic(err)
+	}
+	want := `{T:Tnze}`
+	if string(snbt) != want {
+		t.Errorf("Marshal nesting anonymous struct error, got %q, want %q", snbt, want)
+	}
+}