public static bool TryReduceOrSimplifyQualifiedCref(
this QualifiedCrefSyntax crefSyntax, SemanticModel semanticModel,
CrefSyntax replacement, out CrefSyntax replacementNode, out TextSpan issueSpan,
CancellationToken cancellationToken)
{
var oldSymbol = semanticModel.GetSymbolInfo(crefSyntax, cancellationToken).Symbol;
if (oldSymbol != null)
{
var speculativeBindingOption = SpeculativeBindingOption.BindAsExpression;
if (oldSymbol is INamespaceOrTypeSymbol)
{
speculativeBindingOption = SpeculativeBindingOption.BindAsTypeOrNamespace;
}
var newSymbol = semanticModel.GetSpeculativeSymbolInfo(crefSyntax.SpanStart, replacement, speculativeBindingOption).Symbol;
if (Equals(newSymbol, oldSymbol))
{
// Copy Trivia and Annotations
replacement = replacement.WithLeadingTrivia(crefSyntax.GetLeadingTrivia());
replacement = crefSyntax.CopyAnnotationsTo(replacement);
issueSpan = crefSyntax.Container.Span;
replacementNode = replacement;
return(true);
}
}
replacementNode = default;
issueSpan = default;
return(false);
}
public static bool TryReduceOrSimplifyExplicitName(
this QualifiedCrefSyntax crefSyntax,
SemanticModel semanticModel,
out CrefSyntax replacementNode,
out TextSpan issueSpan,
OptionSet optionSet,
CancellationToken cancellationToken)
{
replacementNode = null;
issueSpan = default;
var memberCref = crefSyntax.Member;
// Currently we are dealing with only the NameMemberCrefs
if (SimplificationHelpers.PreferPredefinedTypeKeywordInMemberAccess(optionSet, semanticModel.Language) &&
memberCref.IsKind(SyntaxKind.NameMemberCref, out NameMemberCrefSyntax nameMemberCref))
{
var symbolInfo = semanticModel.GetSymbolInfo(nameMemberCref.Name, cancellationToken);
var symbol = symbolInfo.Symbol;
if (symbol == null)
{
return(false);
}
// 1. Check for Predefined Types
if (symbol is INamedTypeSymbol namedSymbol)
{
var keywordKind = ExpressionSyntaxExtensions.GetPredefinedKeywordKind(namedSymbol.SpecialType);
if (keywordKind != SyntaxKind.None)
{
replacementNode = CreateReplacement(crefSyntax, keywordKind);
replacementNode = crefSyntax.CopyAnnotationsTo(replacementNode);
// we want to show the whole name expression as unnecessary
issueSpan = crefSyntax.Span;
return(true);
}
}
}
return(TryReduceOrSimplifyQualifiedCref(
crefSyntax, semanticModel, memberCref,
out replacementNode, out issueSpan, cancellationToken));
}