private static bool UsesNameOfWrongMember(ReflectedMember member, Name name, SyntaxNodeAnalysisContext context, out Location location, out string nameText)
{
if (name.Argument is ArgumentSyntax argument &&
NameOf.IsNameOf(argument, out var expression))
{
if (member.Match == FilterMatch.NoMatch ||
(member.Match == FilterMatch.PotentiallyInvisible &&
!(member.Symbol is IMethodSymbol)))
{
nameText = $"\"{name.MetadataName}\"";
location = argument.GetLocation();
return(true);
}
if (member.Symbol is ISymbol memberSymbol &&
TryGetSymbol(expression, out var symbol) &&
!symbol.ContainingType.IsAssignableTo(memberSymbol.ContainingType, context.Compilation) &&
NameOf.TryGetExpressionText(member, context, out nameText))
{
location = expression.GetLocation();
return(true);
}
}
location = null;
nameText = null;
return(false);
bool TryGetSymbol(ExpressionSyntax e, out ISymbol symbol)
{
return(context.SemanticModel.TryGetSymbol(e, context.CancellationToken, out symbol) ||
context.SemanticModel.GetSymbolInfo(e, context.CancellationToken)
.CandidateSymbols.TryFirst(out symbol));
}
}
private static bool ShouldUseNameof(ReflectedMember member, Name name, SyntaxNodeAnalysisContext context, out Location location, out string nameText)
{
if (name.Argument is ArgumentSyntax argument &&
NameOf.CanUseFor(member.Symbol) &&
(member.Match == FilterMatch.Single ||
member.Match == FilterMatch.Ambiguous ||
member.Match == FilterMatch.WrongFlags ||
member.Match == FilterMatch.WrongTypes ||
(member.Match == FilterMatch.PotentiallyInvisible && member.Symbol is IMethodSymbol)))
{
if (argument.Expression is LiteralExpressionSyntax literal &&
literal.IsKind(SyntaxKind.StringLiteralExpression) &&
NameOf.TryGetExpressionText(member, context, out var expressionText) &&
!expressionText.StartsWith("\"", StringComparison.OrdinalIgnoreCase))
{
nameText = $"nameof({expressionText})";
location = literal.GetLocation();
return(true);
}
}
location = null;
nameText = null;
return(false);
}