public override Word GetMember(MemberSegment memberSegment)
{
if (Visitor == null)
{
throw new Exception("Tiene que inicializar visitor con InitVisitor antes de usar cualquier GetMember");
}
Word result;
switch (memberSegment.GetSegmentType())
{
case SegmentType.Identifier:
result = Visitor.GetGlobalAttribute((IdentifierSegment)memberSegment);
if (ErrorHelper.IsError(result)) //se modifica el mensaje
{
return(ErrorFactory.BadAttributeError(this, (IdentifierSegment)memberSegment)); //Chapuz alto: es el unico caso en el que no se retoran el mismo error de un result o se modifica el mismo. I.e. No se puede decir que todo MyError puede ser reportado
}
return(result);
case SegmentType.Procedure:
result = Visitor.InvokeProcedure((ProcedureSegment)memberSegment);
if (ErrorHelper.IsError(result)) //se modifica el mensaje
{
return(ErrorFactory.BadProcedureError(this, (ProcedureSegment)memberSegment));
}
return(result);
case SegmentType.Index:
return(ErrorFactory.BadIndexError(this, (IndexSegment)memberSegment));
default:
throw new Exception("Member segment no valido para ClassInstance.GetMember" + memberSegment.GetSegmentType());
}
}
public override Word GetMember(MemberSegment memberSegment)
{
switch (memberSegment.GetSegmentType())
{
case SegmentType.Identifier:
return(ErrorFactory.BadAttributeError(this, (IdentifierSegment)memberSegment));
case SegmentType.Index:
return(ErrorFactory.BadIndexError(this, (IndexSegment)memberSegment));
case SegmentType.Procedure:
return(ErrorFactory.BadProcedureError(this, (ProcedureSegment)memberSegment));
default:
throw new Exception("tipo de member segment no valido: " + memberSegment.GetSegmentType().ToString());
}
}
public override Word GetMember(MemberSegment memberSegment)
{
IdentifierSegment identSegment;
IndexSegment indexSegment;
ProcedureSegment functionSegment;
switch (memberSegment.GetSegmentType())
{
case SegmentType.Identifier:
identSegment = (IdentifierSegment)memberSegment;
return(ErrorFactory.BadAttributeError(this, (IdentifierSegment)memberSegment));
case SegmentType.Index:
indexSegment = (IndexSegment)memberSegment;
var pyObj = indexSegment.Index;
var pyObjType = pyObj.GetMyType();
if (pyObjType != TypeConstants.INT && pyObjType != TypeConstants.CHAR)
{
return(ErrorFactory.BadIndexError(this, indexSegment));
}
int index;
if (pyObjType == TypeConstants.INT)
{
index = ((MyInt)pyObj).Int;
}
else
{
index = ((MyChar)pyObj).CharValue;
}
if (index >= Array.Length || index < 0)
{
return(ErrorFactory.OutOfBounds(this, index, 0, Array.Length - 1));
}
return(Array[index]);
case SegmentType.Procedure:
functionSegment = (ProcedureSegment)memberSegment;
return(ErrorFactory.BadAttributeError(this, (IdentifierSegment)memberSegment));
default:
throw new Exception("tipo de member segment no valido");
}
}
//Puede retorna error, memoryblock o pyObj public abstract Word GetMember(MemberSegment memberSegment);
public override Word GetMember(MemberSegment memberSegment)
{
return(new MyError("Null Pointer exception!"));
}
