public virtual void Write(Enum value)
{
string enumName = null;
Type type = value.GetType();
if (type.IsDefined(typeof(FlagsAttribute), true) && !Enum.IsDefined(type, value))
{
Enum[] flags = JsonWriter.GetFlagList(type, value);
string[] flagNames = new string[flags.Length];
for (int i = 0; i < flags.Length; i++)
{
flagNames[i] = JsonNameAttribute.GetJsonName(flags[i]);
if (String.IsNullOrEmpty(flagNames[i]))
{
flagNames[i] = flags[i].ToString("f");
}
}
enumName = String.Join(", ", flagNames);
}
else
{
enumName = JsonNameAttribute.GetJsonName(value);
if (String.IsNullOrEmpty(enumName))
{
enumName = value.ToString("f");
}
}
this.Write(enumName);
}
/// <summary>
/// Gets the name specified for use in Json serialization.
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static string GetJsonName(object value)
{
if (value == null)
{
return(null);
}
Type type = value.GetType();
MemberInfo memberInfo = null;
if (type.IsEnum)
{
string name = Enum.GetName(type, value);
if (String.IsNullOrEmpty(name))
{
return(null);
}
memberInfo = type.GetField(name);
}
else
{
memberInfo = value as MemberInfo;
}
if (memberInfo == null)
{
throw new ArgumentException();
}
if (!Attribute.IsDefined(memberInfo, typeof(JsonNameAttribute)))
{
return(null);
}
JsonNameAttribute attribute = (JsonNameAttribute)Attribute.GetCustomAttribute(memberInfo, typeof(JsonNameAttribute));
return(attribute.Name);
}
/// <summary>
/// Gets the name specified for use in Json serialization.
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static string GetJsonName(object value)
{
if (value == null)
{
return(null);
}
Type type = value.GetType();
MemberInfo memberInfo = null;
if (TCU.GetTypeInfo(type).IsEnum)
{
string name = Enum.GetName(type, value);
if (String.IsNullOrEmpty(name))
{
return(null);
}
memberInfo = TCU.GetTypeInfo(type).GetField(name);
}
else
{
memberInfo = value as MemberInfo;
}
if (MemberInfo.Equals(memberInfo, null))
{
throw new ArgumentException();
}
#if WINDOWS_STORE
JsonNameAttribute attribute = memberInfo.GetCustomAttribute <JsonNameAttribute> (true);
#else
JsonNameAttribute attribute = Attribute.GetCustomAttribute(memberInfo, typeof(JsonNameAttribute)) as JsonNameAttribute;
#endif
return(attribute != null ? attribute.Name : null);
}
internal object CoerceType(Type targetType, object value)
{
bool isNullable = TypeCoercionUtility.IsNullable(targetType);
if (value == null)
{
if (!allowNullValueTypes &&
targetType.IsValueType &&
!isNullable)
{
throw new JsonTypeCoercionException(String.Format(TypeCoercionUtility.ErrorNullValueType, targetType.FullName));
}
return(value);
}
if (isNullable)
{
// nullable types have a real underlying struct
Type[] genericArgs = targetType.GetGenericArguments();
if (genericArgs.Length == 1)
{
targetType = genericArgs[0];
}
}
Type actualType = value.GetType();
if (targetType.IsAssignableFrom(actualType))
{
return(value);
}
if (targetType.IsEnum)
{
if (value is String)
{
if (!Enum.IsDefined(targetType, value))
{
// if isn't a defined value perhaps it is the JsonName
foreach (FieldInfo field in targetType.GetFields())
{
string jsonName = JsonNameAttribute.GetJsonName(field);
if (((string)value).Equals(jsonName))
{
value = field.Name;
break;
}
}
}
return(Enum.Parse(targetType, (string)value));
}
else
{
value = this.CoerceType(Enum.GetUnderlyingType(targetType), value);
return(Enum.ToObject(targetType, value));
}
}
if (value is IDictionary)
{
Dictionary <string, MemberInfo> memberMap;
return(this.CoerceType(targetType, (IDictionary)value, out memberMap));
}
if (typeof(IEnumerable).IsAssignableFrom(targetType) &&
typeof(IEnumerable).IsAssignableFrom(actualType))
{
return(this.CoerceList(targetType, actualType, (IEnumerable)value));
}
if (value is String)
{
if (targetType == typeof(DateTime))
{
DateTime date;
if (DateTime.TryParse(
(string)value,
DateTimeFormatInfo.InvariantInfo,
DateTimeStyles.RoundtripKind | DateTimeStyles.AllowWhiteSpaces | DateTimeStyles.NoCurrentDateDefault,
out date))
{
return(date);
}
}
else if (targetType == typeof(Guid))
{
// try-catch is pointless since will throw upon generic conversion
return(new Guid((string)value));
}
else if (targetType == typeof(Char))
{
if (((string)value).Length == 1)
{
return(((string)value)[0]);
}
}
else if (targetType == typeof(Uri))
{
Uri uri;
if (Uri.TryCreate((string)value, UriKind.RelativeOrAbsolute, out uri))
{
return(uri);
}
}
else if (targetType == typeof(Version))
{
// try-catch is pointless since will throw upon generic conversion
return(new Version((string)value));
}
}
else if (targetType == typeof(TimeSpan))
{
return(new TimeSpan((long)this.CoerceType(typeof(Int64), value)));
}
#if !WINPHONE_8
TypeConverter converter = TypeDescriptor.GetConverter(targetType);
if (converter.CanConvertFrom(actualType))
{
return(converter.ConvertFrom(value));
}
converter = TypeDescriptor.GetConverter(actualType);
if (converter.CanConvertTo(targetType))
{
return(converter.ConvertTo(value, targetType));
}
#endif
try
{
// fall back to basics
return(Convert.ChangeType(value, targetType));
}
catch (Exception ex)
{
throw new JsonTypeCoercionException(
String.Format("Error converting {0} to {1}", value.GetType().FullName, targetType.FullName), ex);
}
}
/** Creates a member map for the type */
private Dictionary <string, MemberInfo> CreateMemberMap(Type objectType)
{
Dictionary <string, MemberInfo> memberMap;
if (this.MemberMapCache.TryGetValue(objectType, out memberMap))
{
// map was stored in cache
return(memberMap);
}
// create a new map
memberMap = new Dictionary <string, MemberInfo>();
// load properties into property map
PropertyInfo[] properties = objectType.GetProperties();
foreach (PropertyInfo info in properties)
{
if (!info.CanRead || !info.CanWrite)
{
continue;
}
if (JsonIgnoreAttribute.IsJsonIgnore(info))
{
continue;
}
string jsonName = JsonNameAttribute.GetJsonName(info);
if (String.IsNullOrEmpty(jsonName))
{
memberMap[info.Name] = info;
}
else
{
memberMap[jsonName] = info;
}
}
// load public fields into property map
FieldInfo[] fields = objectType.GetFields();
foreach (FieldInfo info in fields)
{
if (!info.IsPublic)
{
continue;
}
if (JsonIgnoreAttribute.IsJsonIgnore(info))
{
continue;
}
string jsonName = JsonNameAttribute.GetJsonName(info);
if (String.IsNullOrEmpty(jsonName))
{
memberMap[info.Name] = info;
}
else
{
memberMap[jsonName] = info;
}
}
// store in cache for repeated usage
this.MemberMapCache[objectType] = memberMap;
return(memberMap);
}
/** Creates a member map for the type */
private Dictionary <string, MemberInfo> CreateMemberMap(Type objectType)
{
Dictionary <string, MemberInfo> memberMap;
if (this.MemberMapCache.TryGetValue(objectType, out memberMap))
{
// map was stored in cache
return(memberMap);
}
// create a new map
memberMap = new Dictionary <string, MemberInfo>();
// load properties into property map
Type tp = objectType;
while (tp != null)
{
PropertyInfo[] properties = TCU.GetTypeInfo(tp).GetProperties(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
for (int i = 0; i < properties.Length; i++)
{
PropertyInfo info = properties [i];
if (!info.CanRead || !info.CanWrite)
{
continue;
}
if (JsonIgnoreAttribute.IsJsonIgnore(info))
{
continue;
}
string jsonName = JsonNameAttribute.GetJsonName(info);
if (String.IsNullOrEmpty(jsonName))
{
memberMap[info.Name] = info;
}
else
{
memberMap[jsonName] = info;
}
}
// load public fields into property map
FieldInfo[] fields = TCU.GetTypeInfo(tp).GetFields(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
foreach (FieldInfo info in fields)
{
if (!info.IsPublic &&
#if WINDOWS_STORE
info.GetCustomAttribute <JsonMemberAttribute>(false) == null
#else
info.GetCustomAttributes(typeof(JsonMemberAttribute), false).Length == 0
#endif
)
{
continue;
}
if (JsonIgnoreAttribute.IsJsonIgnore(info))
{
continue;
}
string jsonName = JsonNameAttribute.GetJsonName(info);
if (String.IsNullOrEmpty(jsonName))
{
memberMap[info.Name] = info;
}
else
{
memberMap[jsonName] = info;
}
}
tp = tp.BaseType;
}
// store in cache for repeated usage
this.MemberMapCache[objectType] = memberMap;
return(memberMap);
}
public void GetMemberWritingMap(Type objectType, JsonWriterSettings settings, out KeyValuePair <string, FieldInfo>[] outFields, out KeyValuePair <string, PropertyInfo>[] outProps)
{
if (writingMaps == null)
{
writingMaps = new Dictionary <Type, KeyValuePair <KeyValuePair <string, FieldInfo>[], KeyValuePair <string, PropertyInfo>[]> > ();
}
KeyValuePair <KeyValuePair <string, FieldInfo>[], KeyValuePair <string, PropertyInfo>[]> pair;
if (writingMaps.TryGetValue(objectType, out pair))
{
outFields = pair.Key;
outProps = pair.Value;
return;
}
bool anonymousType = objectType.IsGenericType && objectType.Name.StartsWith(JsonWriter.AnonymousTypePrefix);
Type tp = objectType;
if (fieldList == null)
{
fieldList = new List <KeyValuePair <string, FieldInfo> > ();
}
if (propList == null)
{
propList = new List <KeyValuePair <string, PropertyInfo> > ();
}
fieldList.Clear();
propList.Clear();
while (tp != null)
{
FieldInfo[] fields = tp.GetFields(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.DeclaredOnly);
for (int j = 0; j < fields.Length; j++)
{
FieldInfo field = fields[j];
if (field.IsStatic || (!field.IsPublic && field.GetCustomAttributes(typeof(JsonMemberAttribute), true).Length == 0))
{
//if (Settings.DebugMode)
// Console.WriteLine ("Cannot serialize " + field.Name + " : not public or is static (and does not have a JsonMember attribute)");
continue;
}
if (settings.IsIgnored(objectType, field, null))
{
//if (Settings.DebugMode)
// Console.WriteLine ("Cannot serialize " + field.Name + " : ignored by settings");
continue;
}
// use Attributes here to control naming
string fieldName = JsonNameAttribute.GetJsonName(field);
if (String.IsNullOrEmpty(fieldName))
{
fieldName = field.Name;
}
fieldList.Add(new KeyValuePair <string, FieldInfo> (fieldName, field));
}
PropertyInfo[] properties = tp.GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.DeclaredOnly);
for (int j = 0; j < properties.Length; j++)
{
PropertyInfo property = properties[j];
//Console.WriteLine (property.Name);
if (!property.CanRead)
{
//if (Settings.DebugMode)
// Console.WriteLine ("Cannot serialize "+property.Name+" : cannot read");
continue;
}
if (!property.CanWrite && !anonymousType)
{
//if (Settings.DebugMode)
// Console.WriteLine ("Cannot serialize "+property.Name+" : cannot write");
continue;
}
if (settings.IsIgnored(objectType, property, null))
{
//if (Settings.DebugMode)
// Console.WriteLine ("Cannot serialize "+property.Name+" : is ignored by settings");
continue;
}
if (property.GetIndexParameters().Length != 0)
{
//if (Settings.DebugMode)
// Console.WriteLine ("Cannot serialize "+property.Name+" : is indexed");
continue;
}
// use Attributes here to control naming
string propertyName = JsonNameAttribute.GetJsonName(property);
if (String.IsNullOrEmpty(propertyName))
{
propertyName = property.Name;
}
propList.Add(new KeyValuePair <string, PropertyInfo>(propertyName, property));
}
tp = tp.BaseType;
}
outFields = fieldList.ToArray();
outProps = propList.ToArray();
pair = new KeyValuePair <KeyValuePair <string, FieldInfo>[], KeyValuePair <string, PropertyInfo>[]> (outFields, outProps);
writingMaps[objectType] = pair;
}
protected virtual void WriteObject(object value, Type type)
{
bool appendDelim = false;
if (settings.HandleCyclicReferences && !type.IsValueType)
{
int prevIndex = 0;
if (this.previouslySerializedObjects.TryGetValue(value, out prevIndex))
{
this.Writer.Write(JsonReader.OperatorObjectStart);
this.WriteObjectProperty("@ref", prevIndex);
this.WriteLine();
this.Writer.Write(JsonReader.OperatorObjectEnd);
return;
}
else
{
this.previouslySerializedObjects.Add(value, this.previouslySerializedObjects.Count);
}
}
this.Writer.Write(JsonReader.OperatorObjectStart);
this.depth++;
if (this.depth > this.settings.MaxDepth)
{
throw new JsonSerializationException(String.Format(JsonWriter.ErrorMaxDepth, this.settings.MaxDepth));
}
try
{
if (!String.IsNullOrEmpty(this.settings.TypeHintName))
{
if (appendDelim)
{
this.WriteObjectPropertyDelim();
}
else
{
appendDelim = true;
}
this.WriteObjectProperty(this.settings.TypeHintName, type.FullName + ", " + type.Assembly.GetName().Name);
}
bool anonymousType = type.IsGenericType && type.Name.StartsWith(JsonWriter.AnonymousTypePrefix);
// serialize public properties
PropertyInfo[] properties = type.GetProperties();
foreach (PropertyInfo property in properties)
{
if (!property.CanRead)
{
if (Settings.DebugMode)
{
Console.WriteLine("Cannot serialize " + property.Name + " : cannot read");
}
continue;
}
if (!property.CanWrite && !anonymousType)
{
if (Settings.DebugMode)
{
Console.WriteLine("Cannot serialize " + property.Name + " : cannot write");
}
continue;
}
if (this.IsIgnored(type, property, value))
{
if (Settings.DebugMode)
{
Console.WriteLine("Cannot serialize " + property.Name + " : is ignored by settings");
}
continue;
}
if (property.GetIndexParameters().Length != 0)
{
if (Settings.DebugMode)
{
Console.WriteLine("Cannot serialize " + property.Name + " : is indexed");
}
continue;
}
object propertyValue = property.GetGetMethod().Invoke(value, null);
//object propertyValue = property.GetValue(value, null);
if (this.IsDefaultValue(property, propertyValue))
{
if (Settings.DebugMode)
{
Console.WriteLine("Cannot serialize " + property.Name + " : is default value");
}
continue;
}
if (appendDelim)
{
this.WriteObjectPropertyDelim();
}
else
{
appendDelim = true;
}
// use Attributes here to control naming
string propertyName = JsonNameAttribute.GetJsonName(property);
if (String.IsNullOrEmpty(propertyName))
{
propertyName = property.Name;
}
this.WriteObjectProperty(propertyName, propertyValue);
}
// serialize public fields
FieldInfo[] fields = type.GetFields();
foreach (FieldInfo field in fields)
{
if (!field.IsPublic || field.IsStatic)
{
if (Settings.DebugMode)
{
Console.WriteLine("Cannot serialize " + field.Name + " : not public or is static");
}
continue;
}
if (this.IsIgnored(type, field, value))
{
if (Settings.DebugMode)
{
Console.WriteLine("Cannot serialize " + field.Name + " : ignored by settings");
}
continue;
}
object fieldValue = field.GetValue(value);
if (this.IsDefaultValue(field, fieldValue))
{
if (Settings.DebugMode)
{
Console.WriteLine("Cannot serialize " + field.Name + " : is default value");
}
continue;
}
if (appendDelim)
{
this.WriteObjectPropertyDelim();
this.WriteLine();
}
else
{
appendDelim = true;
}
// use Attributes here to control naming
string fieldName = JsonNameAttribute.GetJsonName(field);
if (String.IsNullOrEmpty(fieldName))
{
fieldName = field.Name;
}
this.WriteObjectProperty(fieldName, fieldValue);
}
}
finally
{
this.depth--;
}
if (appendDelim)
{
this.WriteLine();
}
this.Writer.Write(JsonReader.OperatorObjectEnd);
}
