SecondBot/libremetaverse-core/Libremetaverse.structureddata/JSON/JsonData.cs

949 lines
23 KiB
C#

#region Header
/*
* JsonData.cs
* Generic type to hold JSON data (objects, arrays, and so on). This is
* the default type returned by JsonMapper.ToObject().
*
* The authors disclaim copyright to this source code. For more details, see
* the COPYING file included with this distribution.
*/
#endregion
using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.IO;
using System.Linq;
namespace LitJson
{
public class JsonData : IJsonWrapper, IEquatable<JsonData>
{
#region Fields
private IList<JsonData> inst_array;
private bool inst_boolean;
private double inst_double;
private int inst_int;
private long inst_long;
private IDictionary<string, JsonData> inst_object;
private string inst_string;
private string json;
private JsonType type;
// Used to implement the IOrderedDictionary interface
private IList<KeyValuePair<string, JsonData>> object_list;
#endregion
#region Properties
public int Count => EnsureCollection().Count;
public bool IsArray => type == JsonType.Array;
public bool IsBoolean => type == JsonType.Boolean;
public bool IsDouble => type == JsonType.Double;
public bool IsInt => type == JsonType.Int;
public bool IsLong => type == JsonType.Long;
public bool IsObject => type == JsonType.Object;
public bool IsString => type == JsonType.String;
#endregion
#region ICollection Properties
int ICollection.Count => Count;
bool ICollection.IsSynchronized => EnsureCollection().IsSynchronized;
object ICollection.SyncRoot => EnsureCollection().SyncRoot;
#endregion
#region IDictionary Properties
bool IDictionary.IsFixedSize => EnsureDictionary().IsFixedSize;
bool IDictionary.IsReadOnly => EnsureDictionary().IsReadOnly;
ICollection IDictionary.Keys
{
get
{
EnsureDictionary();
IList<string> keys = object_list.Select(entry => entry.Key).ToList();
return (ICollection)keys;
}
}
ICollection IDictionary.Values
{
get
{
EnsureDictionary();
IList<JsonData> values = object_list.Select(entry => entry.Value).ToList();
return (ICollection)values;
}
}
#endregion
#region IJsonWrapper Properties
bool IJsonWrapper.IsArray => IsArray;
bool IJsonWrapper.IsBoolean => IsBoolean;
bool IJsonWrapper.IsDouble => IsDouble;
bool IJsonWrapper.IsInt => IsInt;
bool IJsonWrapper.IsLong => IsLong;
bool IJsonWrapper.IsObject => IsObject;
bool IJsonWrapper.IsString => IsString;
#endregion
#region IList Properties
bool IList.IsFixedSize => EnsureList().IsFixedSize;
bool IList.IsReadOnly => EnsureList().IsReadOnly;
#endregion
#region IDictionary Indexer
object IDictionary.this[object key]
{
get
{
return EnsureDictionary()[key];
}
set
{
if (!(key is String))
throw new ArgumentException(
"The key has to be a string");
JsonData data = ToJsonData(value);
this[(string)key] = data;
}
}
#endregion
#region IOrderedDictionary Indexer
object IOrderedDictionary.this[int idx]
{
get
{
EnsureDictionary();
return object_list[idx].Value;
}
set
{
EnsureDictionary();
JsonData data = ToJsonData(value);
var old_entry = object_list[idx];
inst_object[old_entry.Key] = data;
var entry = new KeyValuePair<string, JsonData>(old_entry.Key, data);
object_list[idx] = entry;
}
}
#endregion
#region IList Indexer
object IList.this[int index]
{
get
{
return EnsureList()[index];
}
set
{
EnsureList();
JsonData data = ToJsonData(value);
this[index] = data;
}
}
#endregion
#region Public Indexers
public JsonData this[string prop_name]
{
get
{
EnsureDictionary();
return inst_object[prop_name];
}
set
{
EnsureDictionary();
var entry = new KeyValuePair<string, JsonData>(prop_name, value);
if (inst_object.ContainsKey(prop_name))
{
for (int i = 0; i < object_list.Count; i++)
{
if (object_list[i].Key == prop_name)
{
object_list[i] = entry;
break;
}
}
}
else
{
object_list.Add(entry);
}
inst_object[prop_name] = value;
json = null;
}
}
public JsonData this[int index]
{
get
{
EnsureCollection();
return type == JsonType.Array ? inst_array[index] : object_list[index].Value;
}
set
{
EnsureCollection();
if (type == JsonType.Array)
inst_array[index] = value;
else
{
var entry = object_list[index];
var new_entry = new KeyValuePair<string, JsonData>(entry.Key, value);
object_list[index] = new_entry;
inst_object[entry.Key] = value;
}
json = null;
}
}
#endregion
#region Constructors
public JsonData()
{
}
public JsonData(bool boolean)
{
type = JsonType.Boolean;
inst_boolean = boolean;
}
public JsonData(double number)
{
type = JsonType.Double;
inst_double = number;
}
public JsonData(int number)
{
type = JsonType.Int;
inst_int = number;
}
public JsonData(long number)
{
type = JsonType.Long;
inst_long = number;
}
public JsonData(object obj)
{
if (obj is bool b)
{
type = JsonType.Boolean;
inst_boolean = b;
return;
}
if (obj is double d)
{
type = JsonType.Double;
inst_double = d;
return;
}
if (obj is int i)
{
type = JsonType.Int;
inst_int = i;
return;
}
if (obj is long l)
{
type = JsonType.Long;
inst_long = l;
return;
}
if (obj is string s)
{
type = JsonType.String;
inst_string = s;
return;
}
throw new ArgumentException(
"Unable to wrap the given object with JsonData");
}
public JsonData(string str)
{
type = JsonType.String;
inst_string = str;
}
#endregion
#region Implicit Conversions
public static implicit operator JsonData(Boolean data)
{
return new JsonData(data);
}
public static implicit operator JsonData(Double data)
{
return new JsonData(data);
}
public static implicit operator JsonData(Int32 data)
{
return new JsonData(data);
}
public static implicit operator JsonData(Int64 data)
{
return new JsonData(data);
}
public static implicit operator JsonData(String data)
{
return new JsonData(data);
}
#endregion
#region Explicit Conversions
public static explicit operator Boolean(JsonData data)
{
if (data.type != JsonType.Boolean)
throw new InvalidCastException(
"Instance of JsonData doesn't hold a double");
return data.inst_boolean;
}
public static explicit operator Double(JsonData data)
{
if (data.type != JsonType.Double)
throw new InvalidCastException(
"Instance of JsonData doesn't hold a double");
return data.inst_double;
}
public static explicit operator Int32(JsonData data)
{
if (data.type != JsonType.Int)
throw new InvalidCastException(
"Instance of JsonData doesn't hold an int");
return data.inst_int;
}
public static explicit operator Int64(JsonData data)
{
if (data.type != JsonType.Long)
throw new InvalidCastException(
"Instance of JsonData doesn't hold an int");
return data.inst_long;
}
public static explicit operator String(JsonData data)
{
if (data.type != JsonType.String)
throw new InvalidCastException(
"Instance of JsonData doesn't hold a string");
return data.inst_string;
}
#endregion
#region ICollection Methods
void ICollection.CopyTo(Array array, int index)
{
EnsureCollection().CopyTo(array, index);
}
#endregion
#region IDictionary Methods
void IDictionary.Add(object key, object value)
{
JsonData data = ToJsonData(value);
EnsureDictionary().Add(key, data);
var entry = new KeyValuePair<string, JsonData>((string)key, data);
object_list.Add(entry);
json = null;
}
void IDictionary.Clear()
{
EnsureDictionary().Clear();
object_list.Clear();
json = null;
}
bool IDictionary.Contains(object key)
{
return EnsureDictionary().Contains(key);
}
IDictionaryEnumerator IDictionary.GetEnumerator()
{
return ((IOrderedDictionary)this).GetEnumerator();
}
void IDictionary.Remove(object key)
{
EnsureDictionary().Remove(key);
for (int i = 0; i < object_list.Count; i++)
{
if (object_list[i].Key == (string)key)
{
object_list.RemoveAt(i);
break;
}
}
json = null;
}
#endregion
#region IEnumerable Methods
IEnumerator IEnumerable.GetEnumerator()
{
return EnsureCollection().GetEnumerator();
}
#endregion
#region IJsonWrapper Methods
bool IJsonWrapper.GetBoolean()
{
if (type != JsonType.Boolean)
throw new InvalidOperationException(
"JsonData instance doesn't hold a boolean");
return inst_boolean;
}
double IJsonWrapper.GetDouble()
{
if (type != JsonType.Double)
throw new InvalidOperationException(
"JsonData instance doesn't hold a double");
return inst_double;
}
int IJsonWrapper.GetInt()
{
if (type != JsonType.Int)
throw new InvalidOperationException(
"JsonData instance doesn't hold an int");
return inst_int;
}
long IJsonWrapper.GetLong()
{
if (type != JsonType.Long)
throw new InvalidOperationException(
"JsonData instance doesn't hold a long");
return inst_long;
}
string IJsonWrapper.GetString()
{
if (type != JsonType.String)
throw new InvalidOperationException(
"JsonData instance doesn't hold a string");
return inst_string;
}
void IJsonWrapper.SetBoolean(bool val)
{
type = JsonType.Boolean;
inst_boolean = val;
json = null;
}
void IJsonWrapper.SetDouble(double val)
{
type = JsonType.Double;
inst_double = val;
json = null;
}
void IJsonWrapper.SetInt(int val)
{
type = JsonType.Int;
inst_int = val;
json = null;
}
void IJsonWrapper.SetLong(long val)
{
type = JsonType.Long;
inst_long = val;
json = null;
}
void IJsonWrapper.SetString(string val)
{
type = JsonType.String;
inst_string = val;
json = null;
}
string IJsonWrapper.ToJson()
{
return ToJson();
}
void IJsonWrapper.ToJson(JsonWriter writer)
{
ToJson(writer);
}
#endregion
#region IList Methods
int IList.Add(object value)
{
return Add(value);
}
void IList.Clear()
{
EnsureList().Clear();
json = null;
}
bool IList.Contains(object value)
{
return EnsureList().Contains(value);
}
int IList.IndexOf(object value)
{
return EnsureList().IndexOf(value);
}
void IList.Insert(int index, object value)
{
EnsureList().Insert(index, value);
json = null;
}
void IList.Remove(object value)
{
EnsureList().Remove(value);
json = null;
}
void IList.RemoveAt(int index)
{
EnsureList().RemoveAt(index);
json = null;
}
#endregion
#region IOrderedDictionary Methods
IDictionaryEnumerator IOrderedDictionary.GetEnumerator()
{
EnsureDictionary();
return new OrderedDictionaryEnumerator(
object_list.GetEnumerator());
}
void IOrderedDictionary.Insert(int idx, object key, object value)
{
string property = (string)key;
JsonData data = ToJsonData(value);
this[property] = data;
KeyValuePair<string, JsonData> entry =
new KeyValuePair<string, JsonData>(property, data);
object_list.Insert(idx, entry);
}
void IOrderedDictionary.RemoveAt(int idx)
{
EnsureDictionary();
inst_object.Remove(object_list[idx].Key);
object_list.RemoveAt(idx);
}
#endregion
#region Private Methods
private ICollection EnsureCollection()
{
if (type == JsonType.Array)
return (ICollection)inst_array;
if (type == JsonType.Object)
return (ICollection)inst_object;
throw new InvalidOperationException(
"The JsonData instance has to be initialized first");
}
private IDictionary EnsureDictionary()
{
if (type == JsonType.Object)
return (IDictionary)inst_object;
if (type != JsonType.None)
throw new InvalidOperationException(
"Instance of JsonData is not a dictionary");
type = JsonType.Object;
inst_object = new Dictionary<string, JsonData>();
object_list = new List<KeyValuePair<string, JsonData>>();
return (IDictionary)inst_object;
}
private IList EnsureList()
{
if (type == JsonType.Array)
return (IList)inst_array;
if (type != JsonType.None)
throw new InvalidOperationException(
"Instance of JsonData is not a list");
type = JsonType.Array;
inst_array = new List<JsonData>();
return (IList)inst_array;
}
private JsonData ToJsonData(object obj)
{
if (obj == null)
return null;
if (obj is JsonData data)
return data;
return new JsonData(obj);
}
private static void WriteJson(IJsonWrapper obj, JsonWriter writer)
{
if (obj.IsString)
{
writer.Write(obj.GetString());
return;
}
if (obj.IsBoolean)
{
writer.Write(obj.GetBoolean());
return;
}
if (obj.IsDouble)
{
writer.Write(obj.GetDouble());
return;
}
if (obj.IsInt)
{
writer.Write(obj.GetInt());
return;
}
if (obj.IsLong)
{
writer.Write(obj.GetLong());
return;
}
if (obj.IsArray)
{
writer.WriteArrayStart();
foreach (object elem in (IList)obj)
WriteJson((JsonData)elem, writer);
writer.WriteArrayEnd();
return;
}
if (obj.IsObject)
{
writer.WriteObjectStart();
foreach (DictionaryEntry entry in ((IDictionary)obj))
{
writer.WritePropertyName((string)entry.Key);
WriteJson((JsonData)entry.Value, writer);
}
writer.WriteObjectEnd();
}
}
#endregion
public int Add(object value)
{
JsonData data = ToJsonData(value);
json = null;
return EnsureList().Add(data);
}
public void Clear()
{
if (IsObject)
{
((IDictionary)this).Clear();
}
else if (IsArray)
{
((IList)this).Clear();
}
}
public bool Equals(JsonData x)
{
if (x?.type != type)
return false;
switch (this.type)
{
case JsonType.None:
return true;
case JsonType.Object:
return this.inst_object.Equals(x.inst_object);
case JsonType.Array:
return this.inst_array.Equals(x.inst_array);
case JsonType.String:
return this.inst_string.Equals(x.inst_string);
case JsonType.Int:
return this.inst_int.Equals(x.inst_int);
case JsonType.Long:
return this.inst_long.Equals(x.inst_long);
case JsonType.Double:
return this.inst_double.Equals(x.inst_double);
case JsonType.Boolean:
return this.inst_boolean.Equals(x.inst_boolean);
}
return false;
}
public JsonType GetJsonType()
{
return type;
}
public void SetJsonType(JsonType type)
{
if (this.type == type)
return;
switch (type)
{
case JsonType.None:
break;
case JsonType.Object:
inst_object = new Dictionary<string, JsonData>();
object_list = new List<KeyValuePair<string, JsonData>>();
break;
case JsonType.Array:
inst_array = new List<JsonData>();
break;
case JsonType.String:
inst_string = default(String);
break;
case JsonType.Int:
inst_int = default(Int32);
break;
case JsonType.Long:
inst_long = default(Int64);
break;
case JsonType.Double:
inst_double = default(Double);
break;
case JsonType.Boolean:
inst_boolean = default(Boolean);
break;
}
this.type = type;
}
public string ToJson()
{
if (json != null)
return json;
StringWriter sw = new StringWriter();
JsonWriter writer = new JsonWriter(sw) { Validate = false };
WriteJson(this, writer);
json = sw.ToString();
return json;
}
public void ToJson(JsonWriter writer)
{
bool old_validate = writer.Validate;
writer.Validate = false;
WriteJson(this, writer);
writer.Validate = old_validate;
}
public override string ToString()
{
switch (type)
{
case JsonType.Array:
return "JsonData array";
case JsonType.Boolean:
return inst_boolean.ToString();
case JsonType.Double:
return inst_double.ToString();
case JsonType.Int:
return inst_int.ToString();
case JsonType.Long:
return inst_long.ToString();
case JsonType.Object:
return "JsonData object";
case JsonType.String:
return inst_string;
}
return "Uninitialized JsonData";
}
}
internal class OrderedDictionaryEnumerator : IDictionaryEnumerator
{
IEnumerator<KeyValuePair<string, JsonData>> list_enumerator;
public object Current => Entry;
public DictionaryEntry Entry
{
get
{
var curr = list_enumerator.Current;
return new DictionaryEntry(curr.Key, curr.Value);
}
}
public object Key => list_enumerator.Current.Key;
public object Value => list_enumerator.Current.Value;
public OrderedDictionaryEnumerator(
IEnumerator<KeyValuePair<string, JsonData>> enumerator)
{
list_enumerator = enumerator;
}
public bool MoveNext()
{
return list_enumerator.MoveNext();
}
public void Reset()
{
list_enumerator.Reset();
}
}
}