protected virtual object Visit(Sequence sequence)
{
Type targetType = this._targetType.Peek();
object ret;
if (targetType.IsArray)
{
Type elementType = targetType.GetElementType();
Array newArray = Array.CreateInstance(elementType, sequence.Elements.Length);
this._targetType.Push(elementType);
for (int elemNum = 0; elemNum < sequence.Elements.Length; elemNum++)
{
AstNode element = sequence.Elements[elemNum];
ValueError[] elementErrors = null;
using (ErrorCollector errors = new ErrorCollector(this))
{
object value = element.Visit(this);
if (errors.Count == 0)
newArray.SetValue(value, elemNum);
elementErrors = errors.ToArray();
}
this.RaiseError(elementErrors);
}
this._targetType.Pop();
ret = newArray;
}
else
{
Type realType;
if (targetType.IsInterface)
realType = OnResolveInterfaceType(targetType);
else
realType = targetType;
ret = Activator.CreateInstance(realType);
MethodInfo[] addMethods =
realType.GetMethods(BindingFlags.Public | BindingFlags.Instance)
.Where(a => StringComparer.InvariantCultureIgnoreCase.Equals(a.Name, "Add"))
.ToArray();
for (int elemNum = 0; elemNum < sequence.Elements.Length; elemNum++)
{
List<ValueError> elementErrors = new List<ValueError>();
bool success = false;
for (int addNum = 0; addNum < addMethods.Length; addNum++)
{
ParameterInfo[] addParams = addMethods[addNum].GetParameters();
if (addParams.Length != 1)
continue;
this._targetType.Push(addParams[0].ParameterType);
using (ErrorCollector errors = new ErrorCollector(this))
{
object value = sequence.Elements[elemNum].Visit(this);
if (errors.Count == 0)
{
try
{
addMethods[addNum].Invoke(ret, new[] {value});
success = true;
break;
}
catch (Exception ex)
{
this.RaiseError(new AddError(addMethods[addNum],
new[] {value},
new[] {sequence.Elements[elemNum]},
ex));
}
}
elementErrors.AddRange(errors);
}
this._targetType.Pop();
}
if (!success)
{
this.RaiseError(elementErrors);
}
}
}
return ret;
}