ListAdapter теперь понимает упрощение структуры при 1 элементе массива

src/main/kotlin/ru/dbotthepony/kstarbound/io/json/ListAdapter.kt

@@ -16,6 +16,11 @@ class ListAdapter<T : Any>(val elementAdapter: TypeAdapter<T>, val valueTransfor
 	constructor(type: Class<T>, valueTransformer: (T) -> T = { it }) : this(LazyTypeProvider(type), valueTransformer = valueTransformer)
 
 	override fun write(out: JsonWriter, value: List<T>) {
+		if (value.size == 1) {
+			elementAdapter.write(out, value[0])
+			return
+		}
+
 		out.beginArray()
 
 		for (v in value) {
@@ -26,6 +31,11 @@ class ListAdapter<T : Any>(val elementAdapter: TypeAdapter<T>, val valueTransfor
 	}
 
 	override fun read(reader: JsonReader): List<T> {
+		if (reader.peek() != JsonToken.BEGIN_ARRAY) {
+			// не массив, возможно упрощение структуры "a": [value] -> "a": value
+			return ImmutableList.of(elementAdapter.read(reader) ?: throw JsonSyntaxException("List does not accept nulls"))
+		}
+
 		reader.beginArray()
 
 		val builder = ImmutableList.builder<T>()