private static TResult GetOrAddSyntaxBuilder<TResult, T1, T2>(this IBuilderSyntax bindingSyntax)
where T1 : class
where TResult : IBindingInfoSyntax<T2>
{
if (bindingSyntax is TResult)
return (TResult)bindingSyntax;
IBindingBuilder builder = bindingSyntax.Builder;
object syntaxBuilder;
if (!builder.TryGetData(SyntaxBuilderConstant, out syntaxBuilder) || !(syntaxBuilder is TResult))
{
syntaxBuilder = new SyntaxBuilder<T1, T2>(builder);
builder.AddOrUpdate(SyntaxBuilderConstant, syntaxBuilder);
}
return (TResult)syntaxBuilder;
}
