Adding upstream version 0.0~git20250501.cd50c6a.

Signed-off-by: Daniel Baumann <daniel@debian.org>

decoding.go

@@ -0,0 +1,85 @@
+package errors
+
+import (
+	"github.com/valyala/fastjson"
+)
+
+func UnmarshalJSON(data []byte) ([]error, error) {
+	if len(data) == 0 {
+		return nil, nil
+	}
+	p := fastjson.Parser{}
+	val, err := p.ParseBytes(data)
+	if err != nil {
+		return nil, err
+	}
+
+	v := val.Get("errors")
+	if v == nil {
+		return nil, wrap(nil, "invalid errors array")
+	}
+	items := make([]error, 0)
+	switch v.Type() {
+	case fastjson.TypeArray:
+		for _, v := range v.GetArray() {
+			status := v.GetInt("status")
+			localErr := errorFromStatus(status)
+			if err := localErr.UnmarshalJSON([]byte(v.String())); err == nil {
+				items = append(items, localErr)
+			}
+		}
+		return items, err
+	case fastjson.TypeObject:
+		status := v.GetInt("status")
+		localErr := errorFromStatus(status)
+		if err := localErr.UnmarshalJSON([]byte(v.String())); err == nil {
+			items = append(items, localErr)
+		}
+	case fastjson.TypeString:
+		it := new(Err)
+		it.m = string(data)
+		items = append(items, it)
+	}
+	return items, nil
+}
+
+func (e *Err) UnmarshalJSON(data []byte) error {
+	if m := fastjson.GetString(data, "message"); len(m) > 0 {
+		e.m = m
+	}
+	return nil
+}
+
+func (n *notFound) UnmarshalJSON(data []byte) error {
+	return n.Err.UnmarshalJSON(data)
+}
+func (m *methodNotAllowed) UnmarshalJSON(data []byte) error {
+	return m.Err.UnmarshalJSON(data)
+}
+func (n *notValid) UnmarshalJSON(data []byte) error {
+	return n.Err.UnmarshalJSON(data)
+}
+func (f *forbidden) UnmarshalJSON(data []byte) error {
+	return f.Err.UnmarshalJSON(data)
+}
+func (n *notImplemented) UnmarshalJSON(data []byte) error {
+	return n.Err.UnmarshalJSON(data)
+}
+func (b *badRequest) UnmarshalJSON(data []byte) error {
+	return b.Err.UnmarshalJSON(data)
+}
+func (u *unauthorized) UnmarshalJSON(data []byte) error {
+	return u.Err.UnmarshalJSON(data)
+}
+func (n *notSupported) UnmarshalJSON(data []byte) error {
+	return n.Err.UnmarshalJSON(data)
+}
+func (t *timeout) UnmarshalJSON(data []byte) error {
+	return t.Err.UnmarshalJSON(data)
+}
+func (b *badGateway) UnmarshalJSON(data []byte) error {
+	return b.Err.UnmarshalJSON(data)
+}
+func (s *serviceUnavailable) UnmarshalJSON(data []byte) error {
+	return s.Err.UnmarshalJSON(data)
+}