private static SyntaxNode Typedef(SyntaxNode node, Scope scope)
{
var field = node
.AncestorsAndSelf()
.OfType <FieldDeclarationSyntax>()
.FirstOrDefault();
if (field == null)
{
scope.AddError("xs01", "malformed typedef", node);
//td: error, malformed typedef
return(node);
}
if (field.Declaration.Variables.Count != 1)
{
scope.AddError("xs01", "malformed typedef", node);
return(node);
}
var variable = field
.Declaration
.Variables[0];
Debug.Assert(variable.Initializer == null || variable.Initializer.IsMissing);
var type = RoslynCompiler.UnMark(field.Declaration.Type);
var identifier = variable.Identifier;
var parentScope = scope.CreateScope <SyntaxToken, SyntaxNode, SemanticModel>(field.Parent);
Debug.Assert(parentScope != null);
parentScope.set("__tdef" + identifier.ToString(), type);
//schedule deletion
var document = scope.GetDocument <SyntaxToken, SyntaxNode, SemanticModel>();
document.change(field.Parent, RoslynCompiler.RemoveMember(field));
//return intact
return(node);
}