public static DeclarationModifiers ToDeclarationModifiers(
this SyntaxTokenList modifiers, DiagnosticBag diagnostics, bool isOrdinaryMethod = false)
{
var result = DeclarationModifiers.None;
bool seenNoDuplicates = true;
for (int i = 0; i < modifiers.Count; i++)
{
SyntaxToken modifier = modifiers[i];
DeclarationModifiers one = ToDeclarationModifier(modifier.ContextualKind());
ReportDuplicateModifiers(
modifier, one, result,
ref seenNoDuplicates,
diagnostics);
if (one == DeclarationModifiers.Partial && i < modifiers.Count - 1)
{
// There was a bug where we allowed `partial async` at the end of modifiers on methods. We keep this behavior for backcompat.
if (!(isOrdinaryMethod && i == modifiers.Count - 2 && ToDeclarationModifier(modifiers[i + 1].ContextualKind()) == DeclarationModifiers.Async))
{
diagnostics.Add(
ErrorCode.ERR_PartialMisplaced,
modifier.GetLocation());
}
}
result |= one;
}
switch (result & DeclarationModifiers.AccessibilityMask)
{
case DeclarationModifiers.Protected | DeclarationModifiers.Internal:
// the two keywords "protected" and "internal" together are treated as one modifier.
result &= ~DeclarationModifiers.AccessibilityMask;
result |= DeclarationModifiers.ProtectedInternal;
break;
case DeclarationModifiers.Private | DeclarationModifiers.Protected:
// the two keywords "private" and "protected" together are treated as one modifier.
result &= ~DeclarationModifiers.AccessibilityMask;
result |= DeclarationModifiers.PrivateProtected;
break;
}
return(result);
}
