/trunk/JSON@CodeTitans/Objects/JSonDictionary.cs

#region License

/*

    Copyright (c) 2010, Paweł Hofman (CodeTitans)

    All Rights Reserved.



    Licensed under the Apache License version 2.0.

    For more information please visit:



    http://codetitans.codeplex.com/license

        or

    http://www.apache.org/licenses/





    For latest source code, documentation, samples

    and more information please visit:



    http://codetitans.codeplex.com/

*/

#endregion



using System;

using System.Collections.Generic;



namespace CodeTitans.JSon.Objects

{

    /// <summary>

    /// Internal wrapper class that describes JSON object and provides <see cref="IJSonObject"/> access interface.

    /// </summary>

    internal class JSonDictionary : IJSonObject, IJSonWritable

    {

        private readonly Dictionary<String, IJSonObject> _data;



        /// <summary>

        /// Init constructor.

        /// </summary>

        public JSonDictionary(Dictionary<String, Object> data)

        {

            _data = new Dictionary<String, IJSonObject>();



            foreach (KeyValuePair<String, Object> d in data)

                _data.Add(d.Key, (IJSonObject)d.Value);

        }



        /// <summary>

        /// Default constructor for inheriting classes.

        /// </summary>

        protected JSonDictionary(Boolean mutable)

        {

            if (!mutable)

                throw new ArgumentOutOfRangeException("mutable", "Invalid value, use a different constructor if immutable");



            _data = new Dictionary<String, IJSonObject>();

        }



        /// <summary>

        /// Private constructor for cloning only.

        /// </summary>

        private JSonDictionary(Dictionary<String, IJSonObject> data)

        {

            _data = new Dictionary<String, IJSonObject>(data);

        }



        /// <summary>

        /// Gets or sets the value of internal data.

        /// </summary>

        protected internal Dictionary<String, IJSonObject> Data

        {

            get { return _data; }

        }



        #region IJSonObject Members



        string IJSonObject.StringValue

        {

            get { throw new InvalidOperationException(); }

        }



        int IJSonObject.Int32Value

        {

            get { throw new InvalidOperationException(); }

        }



        uint IJSonObject.UInt32Value

        {

            get { throw new InvalidOperationException(); }

        }



        long IJSonObject.Int64Value

        {

            get { throw new InvalidOperationException(); }

        }



        ulong IJSonObject.UInt64Value

        {

            get { throw new InvalidOperationException(); }

        }



        float IJSonObject.SingleValue

        {

            get { throw new InvalidOperationException(); }

        }



        double IJSonObject.DoubleValue

        {

            get { throw new InvalidOperationException(); }

        }



        public decimal DecimalValue

        {

            get { throw new InvalidOperationException(); }

        }



        DateTime IJSonObject.DateTimeValue

        {

            get { throw new InvalidOperationException(); }

        }



        TimeSpan IJSonObject.TimeSpanValue

        {

            get { throw new InvalidOperationException(); }

        }



        bool IJSonObject.BooleanValue

        {

            get { throw new InvalidOperationException(); }

        }



        Guid IJSonObject.GuidValue

        {

            get { throw new InvalidOperationException(); }

        }



        bool IJSonObject.IsNull

        {

            get { return false; }

        }



        bool IJSonObject.IsTrue

        {

            get { return false; }

        }



        bool IJSonObject.IsFalse

        {

            get { return true; }

        }



        bool IJSonObject.IsEnumerable

        {

            get { return true; }

        }



        public bool IsArray

        {

            get { return false; }

        }



        object IJSonObject.ObjectValue

        {

            get

            {

                Dictionary<string, object> result = new Dictionary<string, object>();



                foreach (KeyValuePair<string, IJSonObject> v in _data)

                {

                    result.Add(v.Key, v.Value.ObjectValue);

                }



                return result;

            }

        }



        /// <summary>

        /// Gets the DateTime value for given JSON object.

        /// </summary>

        public DateTime ToDateTimeValue(JSonDateTimeKind kind)

        {

            throw new InvalidOperationException();

        }



        /// <summary>

        /// Gets the value of given JSON object.

        /// </summary>

        object IJSonObject.ToValue(Type t)

        {

            return JSonObjectConverter.ToObject(this, t);

        }



        /// <summary>

        /// Get the value of given JSON object.

        /// </summary>

        T IJSonObject.ToObjectValue<T>()

        {

            return (T)JSonObjectConverter.ToObject(this, typeof(T));

        }



        int IJSonObject.Length

        {

            get { return _data.Count; }

        }



        IJSonObject IJSonObject.this[int index]

        {

            get

            {

                if (index < 0 || index >= _data.Keys.Count)

                    throw new IndexOutOfRangeException("Invalid key index");



                foreach(var key in _data.Keys)

                {

                    if (index == 0)

                        return _data[key];

                    index--;

                }



                // shouldn't happen anymore:

                throw new InvalidOperationException();

            }

        }



        int IJSonObject.Count

        {

            get { return _data.Count; }

        }



        IJSonObject IJSonObject.this[string name]

        {

            get { return _data[name]; }

        }



        IJSonObject IJSonObject.this[String name, IJSonObject defaultValue]

        {

            get

            {

                IJSonObject result;



                if (_data.TryGetValue(name, out result))

                    return result;



                if (defaultValue != null)

                    return defaultValue;



                return null;

            }

        }



        IJSonObject IJSonObject.this[String name, String defaultValue]

        {

            get

            {

                IJSonObject result;



                if (_data.TryGetValue(name, out result))

                    return result;



                return new JSonStringObject(defaultValue);

            }

        }



        IJSonObject IJSonObject.this[String name, String defaultValue, Boolean asJSonSerializedObject]

        {

            get

            {

                IJSonObject result;



                if (_data.TryGetValue(name, out result))

                    return result;



                if (!asJSonSerializedObject)

                    return new JSonStringObject(defaultValue);



                JSonReader reader = new JSonReader(defaultValue);

                return reader.ReadAsJSonObject();

            }

        }



        IJSonObject IJSonObject.this[String name, Int32 defaultValue]

        {

            get

            {

                IJSonObject result;



                if (_data.TryGetValue(name, out result))

                    return result;



                return new JSonDecimalInt32Object(defaultValue);

            }

        }



        IJSonObject IJSonObject.this[string name, uint defaultValue]

        {

            get

            {

                IJSonObject result;



                if (_data.TryGetValue(name, out result))

                    return result;



                return new JSonDecimalInt32Object((Int32)defaultValue);

            }

        }



        IJSonObject IJSonObject.this[String name, Int64 defaultValue]

        {

            get

            {

                IJSonObject result;



                if (_data.TryGetValue(name, out result))

                    return result;



                return new JSonDecimalInt64Object(defaultValue);

            }

        }



        IJSonObject IJSonObject.this[string name, ulong defaultValue]

        {

            get

            {

                IJSonObject result;



                if (_data.TryGetValue(name, out result))

                    return result;



                return new JSonDecimalInt64Object((Int64)defaultValue);

            }

        }



        IJSonObject IJSonObject.this[String name, Single defaultValue]

        {

            get

            {

                IJSonObject result;



                if (_data.TryGetValue(name, out result))

                    return result;



                return new JSonDecimalSingleObject(defaultValue);

            }

        }



        IJSonObject IJSonObject.this[String name, Double defaultValue]

        {

            get

            {

                IJSonObject result;



                if (_data.TryGetValue(name, out result))

                    return result;



                return new JSonDecimalDoubleObject(defaultValue);

            }

        }



        public IJSonObject this[string name, decimal defaultValue]

        {

            get

            {

                IJSonObject result;



                if (_data.TryGetValue(name, out result))

                    return result;



                return new JSonDecimalDecimalObject(defaultValue);

            }

        }



        IJSonObject IJSonObject.this[String name, DateTime defaultValue]

        {

            get

            {

                IJSonObject result;



                if (_data.TryGetValue(name, out result))

                    return result;



                return new JSonDecimalInt64Object(defaultValue, JSonDateTimeKind.Default);

            }

        }



        IJSonObject IJSonObject.this[String name, DateTime defaultValue, JSonDateTimeKind kind]

        {

            get

            {

                IJSonObject result;



                if (_data.TryGetValue(name, out result))

                    return result;



                return new JSonDecimalInt64Object(defaultValue, kind);

            }

        }



        IJSonObject IJSonObject.this[String name, TimeSpan defaultValue]

        {

            get

            {

                IJSonObject result;



                if (_data.TryGetValue(name, out result))

                    return result;



                return new JSonDecimalInt64Object(defaultValue);

            }

        }



        IJSonObject IJSonObject.this[String name, Guid defaultValue]

        {

            get

            {

                IJSonObject result;



                if (_data.TryGetValue(name, out result))

                    return result;



                return new JSonStringObject(defaultValue);

            }

        }



        IJSonObject IJSonObject.this[String name, Boolean defaultValue]

        {

            get

            {

                IJSonObject result;



                if (_data.TryGetValue(name, out result))

                    return result;



                return new JSonBooleanObject(defaultValue);

            }

        }



        bool IJSonObject.Contains(string name)

        {

            return _data.ContainsKey(name);

        }



        ICollection<string> IJSonObject.Names

        {

            get { return _data.Keys; }

        }



        IEnumerable<KeyValuePair<string, IJSonObject>> IJSonObject.ObjectItems

        {

            get { return _data; }

        }



        bool IJSonObject.IsMutable

        {

            get { return false; }

        }



        IJSonMutableObject IJSonObject.AsMutable

        {

            get { return (IJSonMutableObject)this; }

        }



        IJSonMutableObject IJSonObject.CreateMutableClone()

        {

            return JSonMutableObject.CreateDictionary(this);

        }



        IJSonObject IJSonObject.CreateImmutableClone()

        {

            return new JSonDictionary(_data);

        }



        public string ToString(string format)

        {

            bool indent = JSonObjectConverter.GetIndentAndVerifyToStringFormat(format);



            using (var writer = new JSonWriter(indent))

            {

                writer.CompactEnumerables = format == JSonObjectConverter.CompactEnumerables;



                writer.Write(_data);

                return writer.ToString();

            }

        }



        IEnumerable<IJSonObject> IJSonObject.ArrayItems

        {

            get { return _data.Values; }

        }



        #endregion



        #region IJSonWritable Members



        void IJSonWritable.Write(IJSonWriter output)

        {

            output.Write(_data);

        }



        #endregion



        public override string ToString()

        {

            return ToString(null);

        }

    }

}