private DirectiveTriviaSyntax ParseNullableDirective(SyntaxToken hash, SyntaxToken token, bool isActive)
{
if (isActive)
{
token = CheckFeatureAvailability(token, MessageID.IDS_FeatureNullableReferenceTypes);
}
SyntaxToken setting = this.CurrentToken.Kind switch
{
SyntaxKind.EnableKeyword => EatToken(),
SyntaxKind.DisableKeyword => EatToken(),
SyntaxKind.RestoreKeyword => EatToken(),
_ => EatToken(SyntaxKind.DisableKeyword, ErrorCode.ERR_NullableDirectiveQualifierExpected, reportError: isActive)
};
SyntaxToken target = this.CurrentToken.Kind switch
{
SyntaxKind.WarningsKeyword => EatToken(),
SyntaxKind.AnnotationsKeyword => EatToken(),
SyntaxKind.EndOfDirectiveToken => null,
SyntaxKind.EndOfFileToken => null,
_ => EatToken(SyntaxKind.WarningsKeyword, ErrorCode.ERR_NullableDirectiveTargetExpected, reportError: !setting.IsMissing && isActive)
};
var end = this.ParseEndOfDirective(ignoreErrors: setting.IsMissing || target?.IsMissing == true || !isActive);
return(SyntaxFactory.NullableDirectiveTrivia(hash, token, setting, target, end, isActive));
}
private DirectiveTriviaSyntax ParseNullableDirective(SyntaxToken hash, SyntaxToken token, bool isActive)
{
if (isActive)
{
token = CheckFeatureAvailability(token, MessageID.IDS_FeatureNullableReferenceTypes);
}
SyntaxToken setting;
switch (this.CurrentToken.Kind)
{
case SyntaxKind.EnableKeyword:
case SyntaxKind.DisableKeyword:
case SyntaxKind.SafeOnlyKeyword:
case SyntaxKind.RestoreKeyword:
setting = EatToken();
break;
default:
setting = EatToken(SyntaxKind.DisableKeyword, ErrorCode.ERR_NullableDirectiveQualifierExpected, reportError: isActive);
break;
}
var end = this.ParseEndOfDirective(ignoreErrors: setting.IsMissing || !isActive);
return(SyntaxFactory.NullableDirectiveTrivia(hash, token, setting, end, isActive));
}
private DirectiveTriviaSyntax ParseNullableDirective(SyntaxToken hash, SyntaxToken token, bool isActive)
{
token = CheckFeatureAvailability(token, MessageID.IDS_FeatureNullableReferenceTypes);
var setting = (this.CurrentToken.Kind == SyntaxKind.EnableKeyword || this.CurrentToken.Kind == SyntaxKind.DisableKeyword) ?
EatToken() :
EatToken(SyntaxKind.DisableKeyword, ErrorCode.ERR_NullableDirectiveQualifierExpected, reportError: isActive);
var end = this.ParseEndOfDirective(ignoreErrors: setting.IsMissing || !isActive);
return(SyntaxFactory.NullableDirectiveTrivia(hash, token, setting, end, isActive));
}