/// <summary>
/// Gets a value which indicates if should be ignored in Json serialization.
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static bool IsXmlIgnore(object value)
{
if (value == null)
{
return(false);
}
Type type = value.GetType();
ICustomAttributeProvider provider = null;
if (TCU.GetTypeInfo(type).IsEnum)
{
provider = TCU.GetTypeInfo(type).GetField(Enum.GetName(type, value));
}
else
{
provider = value as ICustomAttributeProvider;
}
if (provider == null)
{
throw new ArgumentException();
}
#if !UNITY3D
return(provider.IsDefined(typeof(XmlIgnoreAttribute), true));
#else
return(false);
#endif
}
/** Returns a member map if suitable for the object type.
* Dictionary types will make this method return null
*/
public Dictionary <string, MemberInfo> GetMemberMap(Type objectType)
{
// don't incurr the cost of member map for dictionaries
if (TCU.GetTypeInfo(typeof(IDictionary)).IsAssignableFrom(TCU.GetTypeInfo(objectType)))
{
return(null);
}
else
{
return(this.CreateMemberMap(objectType));
}
}
/// <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);
}
protected virtual void Write(object value, bool isProperty, Type fieldType = null, bool skipConverters = false)
{
if (isProperty && this.settings.PrettyPrint)
{
this.Writer.Write(' ');
}
if (value == null)
{
this.Writer.Write(JsonReader.LiteralNull);
return;
}
if (value is IJsonSerializable && !skipConverters)
{
try
{
if (isProperty)
{
this.depth++;
if (this.depth > this.settings.MaxDepth)
{
throw new JsonSerializationException(String.Format(JsonWriter.ErrorMaxDepth, new System.Object[] { this.settings.MaxDepth }));
}
this.WriteLine();
}
((IJsonSerializable)value).WriteJson(this);
}
finally
{
if (isProperty)
{
this.depth--;
}
}
return;
}
// must test enumerations before value types
if (value is Enum)
{
this.Write((Enum)value);
return;
}
// Type.GetTypeCode() allows us to more efficiently switch type
// plus cannot use 'is' for ValueTypes
Type type = value.GetType();
#if WINDOWS_STORE
if (Type.Equals(type, typeof(bool)))
{
this.Write((Boolean)value);
return;
}
else if (Type.Equals(type, typeof(System.Int32)))
{
this.Write((Int32)value);
return;
}
else if (Type.Equals(type, typeof(System.Single)))
{
this.Write((Single)value);
return;
}
else if (Type.Equals(type, typeof(System.String)))
{
this.Write((String)value);
return;
}
else if (Type.Equals(type, typeof(byte)))
{
this.Write((Byte)value);
return;
}
else if (Type.Equals(type, typeof(char)))
{
this.Write((Char)value);
return;
}
else if (Type.Equals(type, typeof(DateTime)))
{
this.Write((DateTime)value);
return;
}
else if (Type.Equals(type, typeof(DBNull)) || Type.Equals(type, null))
{
this.Writer.Write(JsonReader.LiteralNull);
return;
}
else if (Type.Equals(type, typeof(Decimal)))
{
// From MSDN:
// Conversions from Char, SByte, Int16, Int32, Int64, Byte, UInt16, UInt32, and UInt64
// to Decimal are widening conversions that never lose information or throw exceptions.
// Conversions from Single or Double to Decimal throw an OverflowException
// if the result of the conversion is not representable as a Decimal.
this.Write((Decimal)value);
return;
}
else if (Type.Equals(type, typeof(double)))
{
this.Write((Double)value);
return;
}
else if (Type.Equals(type, typeof(System.Int16)))
{
this.Write((Int16)value);
return;
}
else if (Type.Equals(type, typeof(System.Int64)))
{
this.Write((Int64)value);
return;
}
else if (Type.Equals(type, typeof(System.SByte)))
{
this.Write((SByte)value);
return;
}
else if (Type.Equals(type, typeof(System.UInt16)))
{
this.Write((UInt16)value);
return;
}
else if (Type.Equals(type, typeof(System.UInt32)))
{
this.Write((UInt32)value);
return;
}
else if (Type.Equals(type, typeof(System.UInt64)))
{
this.Write((UInt64)value);
return;
}
else
{
// all others must be explicitly tested
}
#else
// Faster to switch on typecode, but Windows Store does not support it
switch (TP.GetTypeCode(type))
{
case TypeCode.Boolean:
{
this.Write((Boolean)value);
return;
}
case TypeCode.Byte:
{
this.Write((Byte)value);
return;
}
case TypeCode.Char:
{
this.Write((Char)value);
return;
}
case TypeCode.DateTime:
{
this.Write((DateTime)value);
return;
}
case TypeCode.DBNull:
case TypeCode.Empty:
{
this.Writer.Write(JsonReader.LiteralNull);
return;
}
case TypeCode.Decimal:
{
// From MSDN:
// Conversions from Char, SByte, Int16, Int32, Int64, Byte, UInt16, UInt32, and UInt64
// to Decimal are widening conversions that never lose information or throw exceptions.
// Conversions from Single or Double to Decimal throw an OverflowException
// if the result of the conversion is not representable as a Decimal.
this.Write((Decimal)value);
return;
}
case TypeCode.Double:
{
this.Write((Double)value);
return;
}
case TypeCode.Int16:
{
this.Write((Int16)value);
return;
}
case TypeCode.Int32:
{
this.Write((Int32)value);
return;
}
case TypeCode.Int64:
{
this.Write((Int64)value);
return;
}
case TypeCode.SByte:
{
this.Write((SByte)value);
return;
}
case TypeCode.Single:
{
this.Write((Single)value);
return;
}
case TypeCode.String:
{
this.Write((String)value);
return;
}
case TypeCode.UInt16:
{
this.Write((UInt16)value);
return;
}
case TypeCode.UInt32:
{
this.Write((UInt32)value);
return;
}
case TypeCode.UInt64:
{
this.Write((UInt64)value);
return;
}
default:
case TypeCode.Object:
{
// all others must be explicitly tested
break;
}
}
#endif
if (!skipConverters)
{
JsonConverter converter = this.Settings.GetConverter(type);
if (converter != null)
{
// Return if converter serialized the object
if (converter.Write(this, depth, type, value))
{
return;
}
}
}
if (value is Guid)
{
this.Write((Guid)value);
return;
}
if (value is Uri)
{
this.Write((Uri)value);
return;
}
if (value is TimeSpan)
{
this.Write((TimeSpan)value);
return;
}
if (value is Version)
{
this.Write((Version)value);
return;
}
// IDictionary test must happen BEFORE IEnumerable test
// since IDictionary implements IEnumerable
if (value is IDictionary)
{
try
{
if (isProperty)
{
this.depth++;
if (this.depth > this.settings.MaxDepth)
{
throw new JsonSerializationException(String.Format(JsonWriter.ErrorMaxDepth, new System.Object[] { this.settings.MaxDepth }));
}
this.WriteLine();
}
this.WriteObject((IDictionary)value);
}
finally
{
if (isProperty)
{
this.depth--;
}
}
return;
}
//if (!Type.Equals (TCU.GetTypeInfo(type).GetInterface (JsonReader.TypeGenericIDictionary), null))
if (TCU.GetTypeInfo(typeof(IDictionary)).IsAssignableFrom(TCU.GetTypeInfo(value.GetType())))
{
try {
if (isProperty)
{
this.depth++;
if (this.depth > this.settings.MaxDepth)
{
throw new JsonSerializationException(String.Format(JsonWriter.ErrorMaxDepth, new System.Object[] { this.settings.MaxDepth }));
}
this.WriteLine();
}
this.WriteDictionary((IEnumerable)value);
} finally {
if (isProperty)
{
this.depth--;
}
}
return;
}
if (value is IList && type.IsGenericType && type.GetGenericTypeDefinition() == typeof(List <>))
{
// Is List<T>
var memberType = type.GetGenericArguments() [0];
try
{
if (isProperty)
{
this.depth++;
if (this.depth > this.settings.MaxDepth)
{
throw new JsonSerializationException(String.Format(JsonWriter.ErrorMaxDepth, new System.Object[] { this.settings.MaxDepth }));
}
this.WriteLine();
}
this.WriteArray((IEnumerable)value, memberType);
}
finally
{
if (isProperty)
{
this.depth--;
}
}
return;
}
// IDictionary test must happen BEFORE IEnumerable test
// since IDictionary implements IEnumerable
if (value is IEnumerable)
{
#if !UNITY3D
if (value is XmlNode)
{
this.Write((System.Xml.XmlNode)value);
return;
}
#endif
try
{
if (isProperty)
{
this.depth++;
if (this.depth > this.settings.MaxDepth)
{
throw new JsonSerializationException(String.Format(JsonWriter.ErrorMaxDepth, new System.Object[] { this.settings.MaxDepth }));
}
this.WriteLine();
}
this.WriteArray((IEnumerable)value, type.GetElementType());
}
finally
{
if (isProperty)
{
this.depth--;
}
}
return;
}
// structs and classes
try
{
if (isProperty)
{
this.depth++;
if (this.depth > this.settings.MaxDepth)
{
throw new JsonSerializationException(String.Format(JsonWriter.ErrorMaxDepth, new System.Object[] { this.settings.MaxDepth }));
}
this.WriteLine();
}
this.WriteObject(value, type, true, fieldType);
}
finally
{
if (isProperty)
{
this.depth--;
}
}
}
protected virtual void WriteObject(object value, Type type, bool serializePrivate, Type fieldType = null)
{
bool appendDelim = false;
if (settings.HandleCyclicReferences && !TCU.GetTypeInfo(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, new System.Object[] { this.settings.MaxDepth }));
}
try
{
if (!String.IsNullOrEmpty(this.settings.TypeHintName) && (!settings.TypeHintsOnlyWhenNeeded || depth <= 1 || (!Type.Equals(fieldType, type) && !Type.Equals(fieldType, null))))
{
if (appendDelim)
{
this.WriteObjectPropertyDelim();
}
else
{
appendDelim = true;
}
if (type.Assembly.Equals(Settings.DefaultAssembly))
{
this.WriteObjectProperty(this.settings.TypeHintName, type.FullName);
}
else
{
this.WriteObjectProperty(this.settings.TypeHintName, type.FullName + ", " + type.Assembly.GetName().Name);
}
}
// Set tag so that other objects can find it when deserializing
// Note that this must be set after the type hint is serialized
// To make sure the fields are read correctly when deserializing
if (referenceHandler != null && referenceHandler.IsHandled(type))
{
if (appendDelim)
{
this.WriteObjectPropertyDelim();
}
else
{
appendDelim = true;
}
this.WriteObjectProperty("@tag", referenceHandler.GetReferenceID(value));
// Notify the reference handler that this value has now been serialized
referenceHandler.MarkAsSerialized(value);
}
//Console.WriteLine ("Anon " + anonymousType);
//Console.WriteLine (type.GetFields(BindingFlags.Instance | BindingFlags.NonPublic).Length + " " + type.GetProperties().Length);
// serialize public properties
TypeCoercionUtility.Member[] members;
this.settings.Coercion.GetMemberWritingMap(type, settings, out members);
for (int j = 0; j < members.Length; j++)
{
MemberInfo member = members[j].member;
System.Type memberType;
object memberValue;
PropertyInfo property = member as PropertyInfo;
if (property != null)
{
memberType = property.PropertyType;
memberValue = property.GetValue(value, null);
}
else
{
var field = member as FieldInfo;
memberType = field.FieldType;
memberValue = field.GetValue(value);
}
if (members[j].IsDefaultValue(memberValue))
{
if (Settings.DebugMode)
{
Console.WriteLine("Cannot serialize " + member.Name + " : is default value");
}
continue;
}
if (appendDelim)
{
this.WriteObjectPropertyDelim();
}
else
{
appendDelim = true;
}
string name = members[j].name;
bool ownedRef = referenceHandler == null || !referenceHandler.IsHandled(memberType) || referenceHandler.IsOwnedRef(member);
if (ownedRef || memberValue == null)
{
// Reference is owned by this member, serialize it as normal
this.WriteObjectProperty(name, memberValue, memberType);
}
else
{
// Reference is not owned by this property, write a reference to it
this.WriteObjectProperty(name, "@" + referenceHandler.GetReferenceID(memberValue), typeof(string));
}
}
}
finally
{
this.depth--;
}
if (appendDelim)
{
this.WriteLine();
}
this.Writer.Write(JsonReader.OperatorObjectEnd);
}
/// <summary>
/// Determines if the property or field should not be serialized.
/// </summary>
/// <param name="objType"></param>
/// <param name="member"></param>
/// <param name="value"></param>
/// <returns></returns>
/// <remarks>
/// Checks these in order, if any returns true then this is true:
/// - is flagged with the JsonIgnoreAttribute property
/// - has a JsonSpecifiedProperty which returns false
/// </remarks>
private bool IsIgnored(Type objType, MemberInfo member, object obj)
{
if (JsonIgnoreAttribute.IsJsonIgnore(member))
{
return(true);
}
string specifiedProperty = JsonSpecifiedPropertyAttribute.GetJsonSpecifiedProperty(member);
if (!String.IsNullOrEmpty(specifiedProperty))
{
#if WINDOWS_STORE
PropertyInfo specProp = TCU.GetTypeInfo(objType).GetRuntimeProperty(specifiedProperty);
#else
PropertyInfo specProp = TCU.GetTypeInfo(objType).GetProperty(specifiedProperty);
#endif
if (!PropertyInfo.Equals(specProp, null))
{
object isSpecified = specProp.GetValue(obj, null);
if (isSpecified is Boolean && !Convert.ToBoolean(isSpecified))
{
return(true);
}
}
}
//If the class is specified as opt-in serialization only, members must have the JsonMember attribute
#if WINDOWS_STORE
if (objType.GetCustomAttribute <JsonOptInAttribute>(true) != null)
{
if (member.GetCustomAttribute <JsonMemberAttribute>(true) == null)
{
return(true);
}
}
#else
if (objType.GetCustomAttributes(typeof(JsonOptInAttribute), true).Length != 0)
{
if (member.GetCustomAttributes(typeof(JsonMemberAttribute), true).Length == 0)
{
return(true);
}
}
#endif
if (this.settings.UseXmlSerializationAttributes)
{
if (JsonIgnoreAttribute.IsXmlIgnore(member))
{
return(true);
}
#if WINDOWS_STORE
PropertyInfo specProp = TCU.GetTypeInfo(objType).GetRuntimeProperty(specifiedProperty);
#else
PropertyInfo specProp = TCU.GetTypeInfo(objType).GetProperty(member.Name + "Specified");
#endif
if (!PropertyInfo.Equals(specProp, null))
{
object isSpecified = specProp.GetValue(obj, null);
if (isSpecified is Boolean && !Convert.ToBoolean(isSpecified))
{
return(true);
}
}
}
return(false);
}
protected virtual void WriteObject(object value, Type type, bool serializePrivate, Type fieldType = null)
{
bool appendDelim = false;
if (settings.HandleCyclicReferences && !TCU.GetTypeInfo(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, new System.Object[] { this.settings.MaxDepth }));
}
try
{
if (!String.IsNullOrEmpty(this.settings.TypeHintName) && (!settings.TypeHintsOnlyWhenNeeded || depth <= 1 || (!Type.Equals(fieldType, type) && !Type.Equals(fieldType, null))))
{
if (appendDelim)
{
this.WriteObjectPropertyDelim();
}
else
{
appendDelim = true;
}
this.WriteObjectProperty(this.settings.TypeHintName, type.FullName + ", " + type.Assembly.GetName().Name);
}
//Console.WriteLine ("Anon " + anonymousType);
//Console.WriteLine (type.GetFields(BindingFlags.Instance | BindingFlags.NonPublic).Length + " " + type.GetProperties().Length);
// serialize public properties
KeyValuePair <string, FieldInfo>[] fields;
KeyValuePair <string, PropertyInfo>[] properties;
this.settings.Coercion.GetMemberWritingMap(type, settings, out fields, out properties);
for (int j = 0; j < properties.Length; j++)
{
PropertyInfo property = properties [j].Value;
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;
}
string name = properties [j].Key;
this.WriteObjectProperty(name, propertyValue, property.PropertyType);
}
for (int j = 0; j < fields.Length; j++)
{
FieldInfo field = fields [j].Value;
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();
}
else
{
appendDelim = true;
}
string name = fields [j].Key;
this.WriteObjectProperty(name, fieldValue, field.FieldType);
}
/*// serialize public fields
* FieldInfo[] fields = TCU.GetTypeInfo(type).GetFields(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
* for (int j = 0; j < fields.Length; j++ ) {
* if (field.IsStatic || (!field.IsPublic &&
#if WINDOWS_STORE
* field.GetCustomAttribute<JsonMemberAttribute>(true) == null))
#else
* field.GetCustomAttributes(typeof(JsonMemberAttribute),true).Length == 0))
#endif
* {
#if DEBUG
* if (Settings.DebugMode)
* Console.WriteLine ("Cannot serialize "+field.Name+" : not public or is static (and does not have a JsonMember attribute)");
#endif
* continue;
* }
*
* if (this.IsIgnored(type, field, value)) {
#if DEBUG
* if (Settings.DebugMode)
* Console.WriteLine ("Cannot serialize "+field.Name+" : ignored by settings");
#endif
* continue;
* }
*
* object fieldValue = field.GetValue(value);
* if (this.IsDefaultValue(field, fieldValue)) {
#if DEBUG
* if (Settings.DebugMode)
* Console.WriteLine ("Cannot serialize "+field.Name+" : is default value");
#endif
* 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, field.FieldType);
* }*/
} finally
{
this.depth--;
}
if (appendDelim)
{
this.WriteLine();
}
this.Writer.Write(JsonReader.OperatorObjectEnd);
}
private static bool IsNullable(Type type)
{
return(TCU.GetTypeInfo(type).IsGenericType&& (typeof(Nullable <>).Equals(type.GetGenericTypeDefinition())));
}
private object CoerceList(Type targetType, Type arrayType, IEnumerable value)
{
if (targetType.IsArray)
{
return(this.CoerceArray(targetType.GetElementType(), value));
}
// targetType serializes as a JSON array but is not an array
// assume is an ICollection / IEnumerable with AddRange, Add,
// or custom Constructor with which we can populate it
// many ICollection types take an IEnumerable or ICollection
// as a constructor argument. look through constructors for
// a compatible match.
ConstructorInfo[] ctors = targetType.GetConstructors();
ConstructorInfo defaultCtor = null;
foreach (ConstructorInfo ctor in ctors)
{
ParameterInfo[] paramList = ctor.GetParameters();
if (paramList.Length == 0)
{
// save for in case cannot find closer match
defaultCtor = ctor;
continue;
}
if (paramList.Length == 1 &&
TCU.GetTypeInfo(paramList[0].ParameterType).IsAssignableFrom(TCU.GetTypeInfo(arrayType)))
{
try
{
// invoke first constructor that can take this value as an argument
return(ctor.Invoke(
new object[] { value }
));
}
catch
{
// there might exist a better match
continue;
}
}
}
if (ConstructorInfo.Equals(defaultCtor, null))
{
throw new JsonTypeCoercionException(
String.Format(TypeCoercionUtility.ErrorDefaultCtor, new System.Object[] { targetType.FullName }));
}
object collection;
try
{
// always try-catch Invoke() to expose real exception
collection = defaultCtor.Invoke(null);
}
catch (TargetInvocationException ex)
{
if (ex.InnerException != null)
{
throw new JsonTypeCoercionException(ex.InnerException.Message, ex.InnerException);
}
throw new JsonTypeCoercionException("Error instantiating " + targetType.FullName, ex);
}
// many ICollection types have an AddRange method
// which adds all items at once
#if WINDOWS_STORE
/** \todo Not sure if this finds the correct methods */
MethodInfo method = TCU.GetTypeInfo(targetType).GetDeclaredMethod("AddRange");
#else
MethodInfo method = TCU.GetTypeInfo(targetType).GetMethod("AddRange");
#endif
ParameterInfo[] parameters = (MethodInfo.Equals(method, null)) ?
null : method.GetParameters();
Type paramType = (parameters == null || parameters.Length != 1) ?
null : parameters[0].ParameterType;
if (!Type.Equals(paramType, null) &&
TCU.GetTypeInfo(paramType).IsAssignableFrom(TCU.GetTypeInfo(arrayType)))
{
try
{
// always try-catch Invoke() to expose real exception
// add all members in one method
method.Invoke(
collection,
new object[] { value });
}
catch (TargetInvocationException ex)
{
if (ex.InnerException != null)
{
throw new JsonTypeCoercionException(ex.InnerException.Message, ex.InnerException);
}
throw new JsonTypeCoercionException("Error calling AddRange on " + targetType.FullName, ex);
}
return(collection);
}
else
{
// many ICollection types have an Add method
// which adds items one at a time
#if WINDOWS_STORE
/** \todo Not sure if this finds the correct methods */
method = TCU.GetTypeInfo(targetType).GetDeclaredMethod("Add");
#else
method = TCU.GetTypeInfo(targetType).GetMethod("Add");
#endif
parameters = (MethodInfo.Equals(method, null)) ?
null : method.GetParameters();
paramType = (parameters == null || parameters.Length != 1) ?
null : parameters[0].ParameterType;
if (!Type.Equals(paramType, null))
{
// loop through adding items to collection
foreach (object item in value)
{
try {
// always try-catch Invoke() to expose real exception
method.Invoke(
collection,
new object[] {
this.CoerceType(paramType, item)
});
} catch (TargetInvocationException ex) {
if (ex.InnerException != null)
{
throw new JsonTypeCoercionException(ex.InnerException.Message, ex.InnerException);
}
throw new JsonTypeCoercionException("Error calling Add on " + targetType.FullName, ex);
}
}
return(collection);
}
}
try
{
// fall back to basics
return(Convert.ChangeType(value, targetType));
}
catch (Exception ex)
{
throw new JsonTypeCoercionException(String.Format("Error converting {0} to {1}", new System.Object[] { value.GetType().FullName, targetType.FullName }), ex);
}
}
internal object CoerceType(Type targetType, object value)
{
bool isNullable = TypeCoercionUtility.IsNullable(targetType);
if (value == null)
{
if (!allowNullValueTypes &&
TCU.GetTypeInfo(targetType).IsValueType&&
!isNullable)
{
throw new JsonTypeCoercionException(String.Format(TypeCoercionUtility.ErrorNullValueType, new System.Object[] { 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 (TCU.GetTypeInfo(targetType).IsAssignableFrom(TCU.GetTypeInfo(actualType)))
{
return(value);
}
if (TCU.GetTypeInfo(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 TCU.GetTypeInfo(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));
}
}
// Value is of the wrong type and it has been deserialized as an IDictionary.
// Previously coercion was supported
// but this generally just caused more problems than it solved, so type hints are recommended now.
// More specifically this can cause annoying problems with tags when a tag is referencing some object
// for which there is no type info for (e.g the field has been removed), that data would have been
// deserialized as an IDictionary, but when the tag gets the information it will try to coerce it
// which will often fail horribly
if (value is IDictionary)
{
return(null);
// Dictionary<string, MemberInfo> memberMap;
// return this.CoerceType(targetType, (IDictionary)value, out memberMap);
}
if (TCU.GetTypeInfo(typeof(IEnumerable)).IsAssignableFrom(TCU.GetTypeInfo(targetType)) &&
TCU.GetTypeInfo(typeof(IEnumerable)).IsAssignableFrom(TCU.GetTypeInfo(actualType)))
{
return(this.CoerceList(targetType, actualType, (IEnumerable)value));
}
if (value is String)
{
if (Type.Equals(targetType, typeof(DateTime)))
{
DateTime date;
if (DateTime.TryParse(
(string)value,
DateTimeFormatInfo.InvariantInfo,
DateTimeStyles.RoundtripKind | DateTimeStyles.AllowWhiteSpaces | DateTimeStyles.NoCurrentDateDefault,
out date))
{
return(date);
}
}
else if (Type.Equals(targetType, typeof(Guid)))
{
// try-catch is pointless since will throw upon generic conversion
return(new Guid((string)value));
}
else if (Type.Equals(targetType, typeof(Char)))
{
if (((string)value).Length == 1)
{
return(((string)value)[0]);
}
}
else if (Equals(targetType, typeof(Uri)))
{
Uri uri;
if (Uri.TryCreate((string)value, UriKind.RelativeOrAbsolute, out uri))
{
return(uri);
}
}
else if (Type.Equals(targetType, typeof(Version)))
{
// try-catch is pointless since will throw upon generic conversion
return(new Version((string)value));
}
}
else if (Type.Equals(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}", new System.Object[] { 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
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;
}
var formerlySerializedAs = info.GetCustomAttributes(typeof(JsonFormerlySerializedAsAttribute), true);
if (formerlySerializedAs.Length > 0)
{
var formerName = (formerlySerializedAs [0] as JsonFormerlySerializedAsAttribute).name;
if (!String.IsNullOrEmpty(formerName) && !memberMap.ContainsKey(formerName))
{
memberMap [formerName] = info;
}
}
}
tp = tp.BaseType;
}
// store in cache for repeated usage
this.MemberMapCache[objectType] = memberMap;
return(memberMap);
}
internal object CoerceType(Type targetType, object value)
{
bool isNullable = TypeCoercionUtility.IsNullable(targetType);
if (value == null)
{
if (!allowNullValueTypes &&
TCU.GetTypeInfo(targetType).IsValueType&&
!isNullable)
{
throw new JsonTypeCoercionException(String.Format(TypeCoercionUtility.ErrorNullValueType, new System.Object[] { 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 (TCU.GetTypeInfo(targetType).IsAssignableFrom(TCU.GetTypeInfo(actualType)))
{
return(value);
}
if (TCU.GetTypeInfo(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 TCU.GetTypeInfo(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 (TCU.GetTypeInfo(typeof(IEnumerable)).IsAssignableFrom(TCU.GetTypeInfo(targetType)) &&
TCU.GetTypeInfo(typeof(IEnumerable)).IsAssignableFrom(TCU.GetTypeInfo(actualType)))
{
return(this.CoerceList(targetType, actualType, (IEnumerable)value));
}
if (value is String)
{
if (Type.Equals(targetType, typeof(DateTime)))
{
DateTime date;
if (DateTime.TryParse(
(string)value,
DateTimeFormatInfo.InvariantInfo,
DateTimeStyles.RoundtripKind | DateTimeStyles.AllowWhiteSpaces | DateTimeStyles.NoCurrentDateDefault,
out date))
{
return(date);
}
}
else if (Type.Equals(targetType, typeof(Guid)))
{
// try-catch is pointless since will throw upon generic conversion
return(new Guid((string)value));
}
else if (Type.Equals(targetType, typeof(Char)))
{
if (((string)value).Length == 1)
{
return(((string)value)[0]);
}
}
else if (Equals(targetType, typeof(Uri)))
{
Uri uri;
if (Uri.TryCreate((string)value, UriKind.RelativeOrAbsolute, out uri))
{
return(uri);
}
}
else if (Type.Equals(targetType, typeof(Version)))
{
// try-catch is pointless since will throw upon generic conversion
return(new Version((string)value));
}
}
else if (Type.Equals(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}", new System.Object[] { value.GetType().FullName, targetType.FullName }), ex);
}
}