protected override void VisitSelectSyntax(SelectSyntax pNode)
{
//Validate if a select is marked as complete, ensure all enum values are used
if (pNode.Annotation.Value == KeyAnnotations.Complete)
{
var t = pNode.Condition.Type;
if (!t.IsEnum)
{
CompilerErrors.CompleteNonEnum(pNode.Condition.Span);
}
else
{
//Get all enum values
//We will indicate a field has been found by making the string null
List <string> fields = new List <string>();
foreach (var f in t.GetFields())
{
fields.Add(f.Name);
}
foreach (var c in pNode.Cases)
{
//Default covers all possible cases so mark all as found
if (c.IsDefault)
{
for (int i = 0; i < fields.Count; i++)
{
fields[i] = null;
}
}
else
{
foreach (var cd in c.Conditions)
{
//We can only check numeric literals and enum access
//We cannot validate returning from a method
if (cd is NumericLiteralSyntax n)
{
for (int i = 0; i < fields.Count; i++)
{
if (t.GetEnumValue(fields[i]) == int.Parse(n.Value))
{
fields[i] = null;
}
}
}
else if (cd is MemberAccessSyntax m)
{
for (int i = 0; i < fields.Count; i++)
{
if (fields[i] == m.Value.Value)
{
fields[i] = null;
}
}
}
}
}
}
fields = fields.Where((f) => f != null).ToList();
if (fields.Count > 0)
{
CompilerErrors.SelectComplete(fields.Aggregate(new StringBuilder(), (c, f) =>
{
if (c.Length > 0)
{
c.Append(", ");
}
c.Append(f);
return(c);
}).ToString(), pNode.Span);
}
}
}
base.VisitSelectSyntax(pNode);
}