private Expression GetCondition(Expression enumerableAccess, EnumerableTypeHelper helper) { var enumerableCheck = HasMetaMemberPart.GetEnumerableCountCheck(enumerableAccess, helper); if (MapperData.RuleSet.Settings.GuardAccessTo(enumerableAccess)) { enumerableCheck = Expression.AndAlso( enumerableAccess.GetIsNotDefaultComparison(), enumerableCheck); } return(enumerableCheck); }
public static bool TryCreateFor(IMemberMapperData mapperData, ref MetaMemberPartBase metaMemberPart) { if (!mapperData.TargetMember.IsSimple) { return(false); } if (!mapperData.CanConvert(typeof(bool), mapperData.TargetMember.Type)) { return(false); } metaMemberPart = new HasMetaMemberPart(mapperData); return(true); }
private static bool TryGetMetaMember( IList <string> memberNameParts, DataSourceFindContext context, out MetaMemberPartBase metaMember) { var currentMappingData = default(IObjectMappingData); var currentSourceMember = default(IQualifiedMember); var currentTargetMember = default(QualifiedMember); var currentMemberPart = metaMember = default(MetaMemberPartBase); Func <IQualifiedMember, QualifiedMember, IObjectMappingData, DataSourceFindContext, IObjectMappingData> currentMappingDataFactory = (sm, tm, md, c) => c.ChildMappingData.Parent; for (var i = memberNameParts.Count - 1; i >= 0; --i) { var memberNamePart = memberNameParts[i]; switch (memberNamePart) { case HasMetaMemberPart.Name: if (HasMetaMemberPart.TryCreateFor(context.MapperData, ref currentMemberPart)) { break; } return(false); case FirstMetaMemberPart.Name: currentMemberPart = new FirstMetaMemberPart(context.MapperData); break; case LastMetaMemberPart.Name: currentMemberPart = new LastMetaMemberPart(context.MapperData); break; case CountMetaMemberPart.Name: if (CountMetaMemberPart.TryCreateFor(context.MapperData, ref currentMemberPart)) { break; } return(false); case NumberOfMetaMemberPart.Name: if (NumberOfMetaMemberPart.TryCreateFor(context.MapperData, ref currentMemberPart)) { break; } return(false); default: currentMappingData = currentMappingDataFactory.Invoke( currentSourceMember, currentTargetMember, currentMappingData, context); var currentMapperData = currentMappingData.MapperData; var matchingTargetMember = GlobalContext.Instance .MemberCache .GetTargetMembers(currentMapperData.TargetType) .FirstOrDefault(m => m.Name == memberNamePart); if (matchingTargetMember == null) { matchingTargetMember = GlobalContext.Instance .MemberCache .GetSourceMembers(currentMapperData.SourceType) .FirstOrDefault(m => m.Name == memberNamePart); if (matchingTargetMember == null) { return(false); } } currentTargetMember = currentMapperData.TargetMember.Append(matchingTargetMember); var childMemberMapperData = new ChildMemberMapperData(currentTargetMember, currentMapperData); var memberMappingData = currentMappingData.GetChildMappingData(childMemberMapperData); currentSourceMember = SourceMemberMatcher.GetMatchFor( memberMappingData, out _, searchParentContexts: false); if (currentSourceMember == null) { return(false); } currentMemberPart = new SourceMemberMetaMemberPart( currentSourceMember, currentMapperData, isRootMemberPart: currentMemberPart == null); currentMappingDataFactory = (sm, tm, md, c) => { var mappingData = ObjectMappingDataFactory.ForChild(sm, tm, 0, md); return(sm.IsEnumerable ? ObjectMappingDataFactory.ForElement(mappingData) : ObjectMappingDataFactory.ForChild(sm, tm, 0, md)); }; break; } if (metaMember == null) { metaMember = currentMemberPart; continue; } if (!metaMember.TrySetNextPart(currentMemberPart)) { return(false); } } return(true); }