private static Action <IBindingBuilder>[] ConvertInternal(LambdaExpression expression, IBindingBuilder builder, bool ignoreCallback)
{
Expression lastExpression;
string path;
if (BindingExtensions.TryGetMemberPath(expression.Body, ".", false, out lastExpression, out path) &&
expression.Parameters[0] == lastExpression)
{
if (ignoreCallback)
{
builder.GetOrAddBindingSources().Add(context => BindingExtensions.CreateBindingSource(context, path, null));
return(Empty.Array <Action <IBindingBuilder> >());
}
return(new Action <IBindingBuilder>[] { b => b.GetOrAddBindingSources().Add(context => BindingExtensions.CreateBindingSource(context, path, null)) });
}
var visitor = new LambdaExpressionToBindingExpressionConverter(expression);
visitor.ConvertInternal(expression);
var actions = visitor._callbacks.ToArray();
visitor._members = null;
visitor._sourceExpression = null;
visitor._currentExpression = null;
visitor._methodExpression = null;
visitor._callbacks = null;
return(actions);
}
public static Func <IDataContext, object> ConvertParameter(IBindingBuilder builder, Func <LambdaExpression> expression)
{
var hasClosure = expression.HasClosure();
if (hasClosure || builder.Contains(BindingBuilderConstants.NoCache))
{
var e = expression();
if (hasClosure)
{
e.TraceClosureWarn();
}
var converter = new LambdaExpressionToBindingExpressionConverter(e);
return(ConvertParameterInternal(builder, converter.ConvertParamterInternal(e)));
}
ParameterCacheValue value;
lock (CacheParameter)
{
if (!CacheParameter.TryGetValue(expression, out value))
{
var e = expression();
var converter = new LambdaExpressionToBindingExpressionConverter(e);
value = converter.ConvertParamterInternal(e);
CacheParameter[expression] = value;
}
}
return(ConvertParameterInternal(builder, value));
}
