internal static ObsoleteDiagnosticKind ReportDiagnosticsIfObsoleteInternal(DiagnosticBag diagnostics, Symbol symbol, SyntaxNodeOrToken node, Symbol containingMember, BinderFlags location)
{
Debug.Assert(diagnostics != null);
var kind = ObsoleteAttributeHelpers.GetObsoleteDiagnosticKind(symbol, containingMember);
DiagnosticInfo info = null;
switch (kind)
{
case ObsoleteDiagnosticKind.Diagnostic:
info = ObsoleteAttributeHelpers.CreateObsoleteDiagnostic(symbol, location);
break;
case ObsoleteDiagnosticKind.Lazy:
case ObsoleteDiagnosticKind.LazyPotentiallySuppressed:
info = new LazyObsoleteDiagnosticInfo(symbol, containingMember, location);
break;
}
if (info != null)
{
diagnostics.Add(info, node.GetLocation());
}
return(kind);
}
/// <returns>
/// True if the symbol is definitely obsolete.
/// False if the symbol is definitely not obsolete.
/// Unknown if the symbol may be obsolete.
///
/// NOTE: The return value reflects obsolete-ness, not whether or not the diagnostic was reported.
/// </returns>
private static ThreeState ReportDiagnosticsIfObsoleteInternal(DiagnosticBag diagnostics, Symbol symbol, SyntaxNodeOrToken node, Symbol containingMember, BinderFlags location)
{
Debug.Assert(diagnostics != null);
if (symbol.ObsoleteState == ThreeState.False)
{
return(ThreeState.False);
}
var data = symbol.ObsoleteAttributeData;
if (data == null)
{
// Obsolete attribute has errors.
return(ThreeState.False);
}
// If we haven't cracked attributes on the symbol at all or we haven't
// cracked attribute arguments enough to be able to report diagnostics for
// ObsoleteAttribute, store the symbol so that we can report diagnostics at a
// later stage.
if (symbol.ObsoleteState == ThreeState.Unknown)
{
diagnostics.Add(new LazyObsoleteDiagnosticInfo(symbol, containingMember, location), node.GetLocation());
return(ThreeState.Unknown);
}
// After this point, always return True.
var inObsoleteContext = ObsoleteAttributeHelpers.GetObsoleteContextState(containingMember);
// If we are in a context that is already obsolete, there is no point reporting
// more obsolete diagnostics.
if (inObsoleteContext == ThreeState.True)
{
return(ThreeState.True);
}
// If the context is unknown, then store the symbol so that we can do this check at a
// later stage
else if (inObsoleteContext == ThreeState.Unknown)
{
diagnostics.Add(new LazyObsoleteDiagnosticInfo(symbol, containingMember, location), node.GetLocation());
return(ThreeState.True);
}
// We have all the information we need to report diagnostics right now. So do it.
var diagInfo = ObsoleteAttributeHelpers.CreateObsoleteDiagnostic(symbol, location);
if (diagInfo != null)
{
diagnostics.Add(diagInfo, node.GetLocation());
return(ThreeState.True);
}
return(ThreeState.True);
}
internal static void Error(DiagnosticBag diagnostics, ErrorCode code, SyntaxNodeOrToken syntax, params object[] args)
{
Error(diagnostics, code, syntax.GetLocation(), args);
}
internal static void Error(DiagnosticBag diagnostics, ErrorCode code, SyntaxNodeOrToken syntax)
{
Error(diagnostics, code, syntax.GetLocation());
}
