private void AddAttribute(object target, IExpression attrExpr)
{
try
{
ICompilerAttribute value = evaluator.Evaluate(attrExpr) as ICompilerAttribute;
if (value == null)
{
throw new InvalidExpressionException("Expression must evaluate to an ICompilerAttribute");
}
// TODO: Fix this temporary hack to allow quoting of this expression later
if (value is MarginalPrototype)
{
((MarginalPrototype)value).prototypeExpression = ((IObjectCreateExpression)attrExpr).Arguments[0];
}
object[] auas = value.GetType().GetCustomAttributes(typeof(AttributeUsageAttribute), true);
if (auas.Length > 0)
{
AttributeUsageAttribute aua = (AttributeUsageAttribute)auas[0];
if (!aua.AllowMultiple)
{
Context.InputAttributes.RemoveOfType(target, value.GetType());
}
}
Context.InputAttributes.Set(target, value);
}
catch (Exception ex)
{
Error("Could not evaluate attribute " + attrExpr, ex);
}
}
