Added StructuredJSON interface

Author: LatvianModder

src/main/java/dev/latvian/apps/json/JSONArray.java

@@ -4,7 +4,7 @@
 import java.util.Collection;
 import java.util.List;
 
-public class JSONArray extends ArrayList<Object> implements JSONSerializable {
+public class JSONArray extends ArrayList<Object> implements StructuredJSON, JSONSerializable {
 	public static JSONArray of() {
 		return new JSONArray(4);
 	}
@@ -49,6 +49,16 @@ public final Object toJSON() {
 		return this;
 	}
 
+	@Override
+	public JSONObject asObject() {
+		throw new ClassCastException("JSON object expected");
+	}
+
+	@Override
+	public JSONArray asArray() {
+		return this;
+	}
+
 	public <T> List<T> cast() {
 		return (List) this;
 	}

src/main/java/dev/latvian/apps/json/JSONObject.java

@@ -3,7 +3,7 @@
 import java.util.LinkedHashMap;
 import java.util.Map;
 
-public class JSONObject extends LinkedHashMap<String, Object> implements JSONSerializable {
+public class JSONObject extends LinkedHashMap<String, Object> implements JSONSerializable, StructuredJSON {
 	public static JSONObject of() {
 		return new JSONObject(8);
 	}
@@ -46,6 +46,16 @@ public final Object toJSON() {
 		return this;
 	}
 
+	@Override
+	public JSONObject asObject() {
+		return this;
+	}
+
+	@Override
+	public JSONArray asArray() {
+		throw new ClassCastException("JSON array expected");
+	}
+
 	@Override
 	public Object get(Object key) {
 		var o = super.get(key);

src/main/java/dev/latvian/apps/json/StructuredJSON.java

@@ -0,0 +1,7 @@
+package dev.latvian.apps.json;
+
+public interface StructuredJSON {
+	JSONObject asObject();
+
+	JSONArray asArray();
+}