Adding upstream version 3.10.8.

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

util/json.go

@@ -0,0 +1,51 @@
+// Copyright Earl Warren <contact@earl-warren.org>
+// Copyright Loïc Dachary <loic@dachary.org>
+// SPDX-License-Identifier: MIT
+
+package util
+
+import (
+	"fmt"
+)
+
+func jsonMap[T any](data any, key string) T {
+	return jsonGet[T](jsonGetObject(data)[key])
+}
+
+func jsonGetObject(data any) map[string]any {
+	switch v := data.(type) {
+	case nil:
+		return nil
+	case map[string]any:
+		return v
+	default:
+		panic(fmt.Errorf("unexpected %T", data))
+	}
+}
+
+func jsonElement[T any](data any, index int) T {
+	return jsonGet[T](jsonGetArray(data)[index])
+}
+
+func jsonGetArray(data any) []any {
+	switch v := data.(type) {
+	case nil:
+		return nil
+	case []any:
+		return v
+	default:
+		panic(fmt.Errorf("unexpected %T", data))
+	}
+}
+
+func jsonGet[T any](data any) T {
+	switch v := data.(type) {
+	case nil:
+		var s T
+		return s
+	case T:
+		return v
+	default:
+		panic(fmt.Errorf("unexpected %T", data))
+	}
+}