private static SyntaxTokenList GenerateModifiers(
IParameterSymbol parameter, bool isFirstParam)
{
SyntaxTokenList list = CSharpSyntaxGenerator.GetParameterModifiers(parameter.RefKind);
if (isFirstParam &&
parameter.ContainingSymbol is IMethodSymbol methodSymbol &&
methodSymbol.IsExtensionMethod)
{
list = list.Add(SyntaxFactory.Token(SyntaxKind.ThisKeyword));
}
if (parameter.IsParams)
{
list = list.Add(SyntaxFactory.Token(SyntaxKind.ParamsKeyword));
}
return(list);
}
public override TypeSyntax VisitFunctionPointerType(IFunctionPointerTypeSymbol symbol)
{
// TODO(https://github.com/dotnet/roslyn/issues/39865): generate the calling convention once exposed through the API
var parameters = symbol.Signature.Parameters.Select(p => (p.Type, RefKindModifiers: CSharpSyntaxGenerator.GetParameterModifiers(p.RefKind)))
.Concat(SpecializedCollections.SingletonEnumerable((
Type: symbol.Signature.ReturnType,
RefKindModifiers: CSharpSyntaxGenerator.GetParameterModifiers(symbol.Signature.RefKind, forFunctionPointerReturnParameter: true))))
.SelectAsArray(t => SyntaxFactory.Parameter(SyntaxFactory.MissingToken(SyntaxKind.IdentifierToken)).WithModifiers(t.RefKindModifiers).WithType(t.Type.GenerateTypeSyntax()));
return(AddInformationTo(
SyntaxFactory.FunctionPointerType(SyntaxFactory.SeparatedList(parameters)), symbol));
}
