/// <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>
/// Parses a javascript object
/// </summary>
/// <returns></returns>
private ObjectExpression ParseObject()
{
Token tok = ReadToken();
Debug.Assert(tok == LBraceToken);
ObjectExpression value = new ObjectExpression();
Expression item;
while (ReadAhead(CommaToken, RBraceToken, new ExpressionMethod(ParseKeyValue), out item))
{
value.Add((KeyValueExpression)item);
}
return value;
}
/// <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;
}