public static TypeContext <S> WalkExpression <T, S>(TypeContext <T> tc, Expression <Func <T, S> > lambda)
{
var mag = new MemberAccessGatherer()
{
replacements = { { lambda.Parameters[0], new TypeContextExpression(new PropertyInfo[0], typeof(T), tc.PropertyRoute, tc.Value) } }
};
TypeContextExpression result = Cast(mag.Visit(lambda.Body));
var value = result.Value == NonValue ?
(S)(object)null :
(S)result.Value;
return(new TypeContext <S>(value, tc, result.Properties.ToString(a => a.Name, TypeContext.Separator), result.Route));
}
public override MList <S> GetValue(MappingContext <MList <S> > ctx)
{
using (HeavyProfiler.LogNoStackTrace("GetValue", () => "MListDictionaryMapping<{0}>".FormatWith(typeof(S).TypeName())))
{
if (ctx.Empty())
{
return(ctx.None());
}
MList <S> list = ctx.Value;
var dic = (FilterElements == null ? list : list.Where(FilterElements)).ToDictionary(GetKey);
PropertyRoute route = ctx.PropertyRoute.Add("Item").Continue(MemberList);
string[] namesToAppend = MemberList.Select(MemberAccessGatherer.GetName).NotNull().ToArray();
foreach (MappingContext <S> itemCtx in GenerateItemContexts(ctx))
{
var tce = new TypeContextExpression(new PropertyInfo[0], typeof(S), itemCtx.PropertyRoute, itemCtx.Value);
SubContext <K> subContext = new SubContext <K>(TypeContextUtilities.Compose(itemCtx.Prefix, namesToAppend), null, route, itemCtx);
subContext.Value = KeyMapping(subContext);
if (!dic.ContainsKey(subContext.Value) && OnlyIfPossible)
{
continue;
}
itemCtx.Value = dic.GetOrThrow(subContext.Value);
itemCtx.Value = ElementMapping(itemCtx);
ctx.AddChild(itemCtx);
}
return(list);
}
}
