protected virtual Expression GetExpression(IEnumerable Items, Type ItemType, JsonPath CurrentPath, ISerializerHandler serializer)
{
int index = 0;
ArrayExpression expression = new ArrayExpression();
foreach (object value in Items)
{
Expression itemExpr = serializer.Serialize(value, CurrentPath.Append(index));
if (value != null && !ReflectionUtils.AreEquivalentTypes(value.GetType(), ItemType))
{
itemExpr = new CastExpression(value.GetType(), itemExpr);
}
expression.Add(itemExpr);
index++;
}
return expression;
}
public void VisitCast(CastExpression Cast)
{
Visit(Cast.Expression);
}
/// <summary>
/// Parses a type cast. Will also parse the expression that the cast applies to.
/// The result will be the expression following the cast with the ResultType set to
/// the type of the cast.
/// </summary>
/// <returns>casted expression</returns>
private Expression ParseCast()
{
Token tok = ReadToken();
Debug.Assert(tok == LParenToken, "Invalid starting token for ParseCast: " + tok);
Type desiredType = ParseTypeSpecifier();
CastExpression cast = new CastExpression(desiredType);
tok = ReadToken();
RequireToken(RParenToken, tok, "Invalid Type Cast Syntax");
cast.Expression = ParseExpression();
return cast;
}
/// <summary>
/// Creates an json object expression from object data.
/// </summary>
/// <param name="data">the data to serialize</param>
/// <param name="currentPath">current path to the object</param>
/// <param name="serializer">serializer instance used to serialize key values</param>
/// <returns>json object expression</returns>
public override Expression GetExpression(object data, JsonPath currentPath, ISerializerHandler serializer)
{
TypeData handler = Context.GetTypeHandler(data.GetType());
ObjectExpression expression = new ObjectExpression();
foreach (IPropertyData prop in handler.Properties)
{
object value = prop.GetValue(data);
Expression valueExpr;
if (prop.HasConverter)
{
valueExpr = serializer.Serialize(value, currentPath.Append(prop.Name), prop.TypeConverter);
}
else
{
valueExpr = serializer.Serialize(value, currentPath.Append(prop.Name));
}
if (value != null && !ReflectionUtils.AreEquivalentTypes(value.GetType(), prop.PropertyType))
{
valueExpr = new CastExpression(value.GetType(), valueExpr);
}
expression.Add(prop.Name, valueExpr);
}
return expression;
}
/// <summary>
/// Serialize the given object
/// </summary>
/// <param name="value">object to serialize</param>
public void Serialize(object value)
{
//if (value != null && _context.OutputTypeComment)
//{
// string comment = "";
// comment += "/*" + "\r\n";
// comment += " Created by JsonExSerializer" + "\r\n";
// comment += " Assembly: " + value.GetType().Assembly.ToString() + "\r\n";
// comment += " Type: " + value.GetType().FullName + "\r\n";
// comment += "*/" + "\r\n";
// this.WriteComment(comment);
//}
Expression expr = Serialize(value, new JsonPath(), null);
if (value != null && !ReflectionUtils.AreEquivalentTypes(value.GetType(), _serializedType))
{
expr = new CastExpression(value.GetType(), expr);
}
ExpressionWriter.Write(this, _context, expr);
}
/// <summary>
/// Serialize an object implementing IDictionary. The serialized data is similar to a regular
/// object, except that the keys of the dictionary are used instead of properties.
/// </summary>
/// <param name="data">the dictionary object</param>
/// <param name="currentPath">object's path</param>
/// <param name="serializer">the serializer instance, used to serialize keys and values</param>
public override Expression GetExpression(object data, JsonPath currentPath, ISerializerHandler serializer)
{
IDictionary dictionary = (IDictionary)data;
Type itemType = typeof(object);
Type genericDictionary = null;
if ((genericDictionary = dictionary.GetType().GetInterface(typeof(IDictionary<,>).Name)) != null)
{
itemType = genericDictionary.GetGenericArguments()[1];
}
ObjectExpression expression = new ObjectExpression();
foreach (DictionaryEntry pair in dictionary)
{
//may not work in all cases
object value = pair.Value;
Expression valueExpr = serializer.Serialize(value, currentPath.Append(pair.Key.ToString()));
if (value != null && !ReflectionUtils.AreEquivalentTypes(value.GetType(), itemType))
{
valueExpr = new CastExpression(value.GetType(), valueExpr);
}
expression.Add(pair.Key.ToString(), valueExpr);
}
return expression;
}
/// <summary>
/// Serializes the data into a json array expression.
/// </summary>
/// <param name="data">the data to serialize</param>
/// <param name="currentPath">the current path to the data</param>
/// <param name="serializer">serializer instance to use to serialize list items</param>
/// <returns>a json array expression representation</returns>
public override Expression GetExpression(object data, JsonPath currentPath, ISerializerHandler serializer)
{
TypeData handler = Context.GetTypeHandler(data.GetType());
CollectionHandler collectionHandler = handler.GetCollectionHandler();
Type elemType = collectionHandler.GetItemType(handler.ForType);
int index = 0;
ArrayExpression expression = new ArrayExpression();
foreach (object value in collectionHandler.GetEnumerable(data))
{
Expression itemExpr = serializer.Serialize(value, currentPath.Append(index));
if (value != null && !ReflectionUtils.AreEquivalentTypes(value.GetType(), elemType))
{
itemExpr = new CastExpression(value.GetType(), itemExpr);
}
expression.Add(itemExpr);
index++;
}
return expression;
}
