public override void OnAttribute(Boo.Lang.Ast.Attribute attribute, ref Boo.Lang.Ast.Attribute resultingNode)
{
// Neste primeiro passo tentamos apenas
// resolver ast attributes.
// Um passo posterior (resoluo de nomes e tipos) ir
// assegurar que todos os nomes tenham sido resolvidos e colocar
// mensagens de erro de acordo
IBinding binding = ResolveQualifiedName(attribute, attribute.Name);
if (null == binding)
{
binding = ResolveQualifiedName(attribute, BuildAttributeName(attribute.Name));
}
if (null != binding)
{
if (BindingType.Ambiguous == binding.BindingType)
{
Errors.AmbiguousName(attribute, attribute.Name, ((AmbiguousBinding)binding).Bindings);
}
else
{
if (BindingType.TypeReference != binding.BindingType)
{
Errors.NameNotType(attribute, attribute.Name);
}
else
{
ITypeBinding attributeType = ((ITypedBinding)binding).BoundType;
if (IsAstAttribute(attributeType))
{
ExternalTypeBinding externalType = attributeType as ExternalTypeBinding;
if (null == externalType)
{
Errors.AstAttributeMustBeExternal(attribute, attributeType);
}
else
{
ScheduleAttributeApplication(attribute, externalType.Type);
// remove it from parent
resultingNode = null;
}
}
else
{
if (!IsSystemAttribute(attributeType))
{
Errors.TypeNotAttribute(attribute, attributeType.FullName);
}
else
{
// remember the attribute's type
BindingManager.Bind(attribute, attributeType);
}
}
}
}
}
}
public void AstAttributeMustBeExternal(Boo.Lang.Ast.Attribute attribute, Bindings.ITypeBinding resolvedType)
{
Add(new Error(attribute, Format("AstAttributeMustBeExternal", resolvedType.FullName)));
}
public void AttributeResolution(Boo.Lang.Ast.Attribute attribute, Type type, Exception cause)
{
string msg = Format("AttributeResolution", type, cause.Message);
Add(new Error(attribute, msg, cause));
}
public ApplyAttributeTask(CompilerContext context, Boo.Lang.Ast.Attribute attribute, Type type)
{
_context = context;
_attribute = attribute;
_type = type;
}
void ScheduleAttributeApplication(Boo.Lang.Ast.Attribute attribute, Type type)
{
_tasks.Add(new ApplyAttributeTask(_context, attribute, type));
}
