source: binary-improvements/7dtd-server-fixes/src/JSON/JSONObject.cs@ 338

using System.Collections.Generic;
using System.Text;

namespace AllocsFixes.JSON {
        public class JSONObject : JSONNode {
                private readonly Dictionary<string, JSONNode> nodes = new Dictionary<string, JSONNode> ();

                public JSONNode this [string name] {
                        get { return nodes [name]; }
                        set { nodes [name] = value; }
                }

                public int Count {
                        get { return nodes.Count; }
                }

                public List<string> Keys {
                        get { return new List<string> (nodes.Keys); }
                }

                public bool ContainsKey (string name) {
                        return nodes.ContainsKey (name);
                }

                public void Add (string name, JSONNode node) {
                        nodes.Add (name, node);
                }

                public override void ToString (StringBuilder stringBuilder, bool prettyPrint = false, int currentLevel = 0) {
                        stringBuilder.Append ("{");
                        if (prettyPrint) {
                                stringBuilder.Append ('\n');
                        }

                        foreach (KeyValuePair<string, JSONNode> kvp in nodes) {
                                if (prettyPrint) {
                                        stringBuilder.Append (new string ('\t', currentLevel + 1));
                                }

                                stringBuilder.Append (string.Format ("\"{0}\":", kvp.Key));
                                if (prettyPrint) {
                                        stringBuilder.Append (" ");
                                }

                                kvp.Value.ToString (stringBuilder, prettyPrint, currentLevel + 1);
                                stringBuilder.Append (",");
                                if (prettyPrint) {
                                        stringBuilder.Append ('\n');
                                }
                        }

                        if (nodes.Count > 0) {
                                stringBuilder.Remove (stringBuilder.Length - (prettyPrint ? 2 : 1), 1);
                        }

                        if (prettyPrint) {
                                stringBuilder.Append (new string ('\t', currentLevel));
                        }

                        stringBuilder.Append ("}");
                }

                public static JSONObject Parse (string json, ref int offset) {
                        //Log.Out ("ParseObject enter (" + offset + ")");
                        JSONObject obj = new JSONObject ();

                        bool nextElemAllowed = true;
                        offset++;
                        while (true) {
                                Parser.SkipWhitespace (json, ref offset);
                                switch (json [offset]) {
                                        case '"':
                                                if (nextElemAllowed) {
                                                        JSONString key = JSONString.Parse (json, ref offset);
                                                        Parser.SkipWhitespace (json, ref offset);
                                                        if (json [offset] != ':') {
                                                                throw new MalformedJSONException (
                                                                        "Could not parse object, missing colon (\":\") after key");
                                                        }

                                                        offset++;
                                                        JSONNode val = Parser.ParseInternal (json, ref offset);
                                                        obj.Add (key.GetString (), val);
                                                        nextElemAllowed = false;
                                                } else {
                                                        throw new MalformedJSONException (
                                                                "Could not parse object, found new key without a separating comma");
                                                }

                                                break;
                                        case ',':
                                                if (!nextElemAllowed) {
                                                        nextElemAllowed = true;
                                                        offset++;
                                                } else {
                                                        throw new MalformedJSONException (
                                                                "Could not parse object, found a comma without a key/value pair first");
                                                }

                                                break;
                                        case '}':
                                                offset++;

                                                //Log.Out ("JSON:Parsed Object: " + obj.ToString ());
                                                return obj;
                                        default:
                                                break;
                                }
                        }
                }
        }
}