public void InternalConstructorSetsAllNeededData_When_EventIsField()
{
EventFieldDeclarationSyntax decl = GetNode <EventFieldDeclarationSyntax>("class Test { event System.Action e1, e2 }");
const int index = 1;
VariableDeclaratorSyntax var = decl.Declaration.Variables[index];
SemanticModel semanticModel = Compilation.CurrentCompilation.GetSemanticModel(decl.SyntaxTree);
IEventSymbol symbol = (semanticModel.GetDeclaredSymbol(var) as IEventSymbol) !;
Data.EventData data = new(symbol, Compilation);
Location location = decl.GetLocation();
Assert.True(
data.SemanticModel is not null &&
data.SemanticModel.SyntaxTree.IsEquivalentTo(semanticModel.SyntaxTree) &&
data.Symbol is not null &&
SymbolEqualityComparer.Default.Equals(data.Symbol, symbol) &&
data.Location is not null &&
data.Location == location &&
data.Declaration is not null &&
data.Declaration.IsEquivalentTo(decl) &&
data.ParentCompilation is not null &&
data.ParentCompilation == Compilation &&
data.AsProperty is null &&
data.AsField is not null &&
data.AsField.IsEquivalentTo(decl) &&
data.Variable is not null &&
data.Variable.IsEquivalentTo(var) &&
data.Index == index
);
}
//TODO: Use symbol (instead of syntax node), remove code duplication from property handling
// It looks like there's a bug since Roslyn is failing to resolve the symbol for the event
private string MakeGenericTypeIfAppropriate(EventFieldDeclarationSyntax node, string existingFieldVar)
{
var typeDecl = ((TypeDeclarationSyntax)node.Parent);
if (typeDecl.TypeParameterList == null || typeDecl.TypeParameterList.IsMissing)
{
return(existingFieldVar);
}
//TODO: Register the following variable?
var genTypeVar = TempLocalVar($"gt_{node.Declaration.Variables[0].Identifier.Text}_{node.GetLocation().SourceSpan.Start}");
AddCecilExpressions(new[]
{
$"var {genTypeVar} = {eventDeclaringTypeVar}.MakeGenericInstanceType({eventDeclaringTypeVar}.GenericParameters.ToArray());",
$"var {genTypeVar}_ = new FieldReference({existingFieldVar}.Name, {existingFieldVar}.FieldType, {genTypeVar});",
});
return($"{genTypeVar}_");
}