private Expression CreateMapExpressionCore(ExpressionRequest request, Expression instanceParameter, TypePairCount typePairCount, TypeMap typeMap, LetPropertyMaps letPropertyMaps)
{
var bindings = new List <MemberBinding>();
var depth = GetDepth(request, typePairCount);
if (typeMap.MaxDepth > 0 && depth >= typeMap.MaxDepth)
{
if (typeMap.Profile.AllowNullDestinationValues)
{
return(null);
}
}
else
{
bindings = CreateMemberBindings(request, typeMap, instanceParameter, typePairCount, letPropertyMaps);
}
Expression constructorExpression = DestinationConstructorExpression(typeMap, instanceParameter);
if (instanceParameter is ParameterExpression)
{
constructorExpression = ((LambdaExpression)constructorExpression).ReplaceParameters(instanceParameter);
}
var visitor = new NewFinderVisitor();
visitor.Visit(constructorExpression);
var expression = MemberInit(
visitor.NewExpression,
bindings.ToArray()
);
return(expression);
}
internal static Expression CreateMapExpression(IMappingEngine mappingEngine, ExpressionRequest request, Expression instanceParameter, Internal.IDictionary <ExpressionRequest, int> typePairCount)
{
var typeMap = mappingEngine.ConfigurationProvider.FindTypeMapFor(request.SourceType,
request.DestinationType);
if (typeMap == null)
{
const string MessageFormat = "Missing map from {0} to {1}. Create using Mapper.CreateMap<{0}, {1}>.";
var message = string.Format(MessageFormat, request.SourceType.Name, request.DestinationType.Name);
throw new InvalidOperationException(message);
}
var bindings = CreateMemberBindings(mappingEngine, request, typeMap, instanceParameter, typePairCount);
var parameterReplacer = new ParameterReplacementVisitor(instanceParameter);
var visitor = new NewFinderVisitor();
var ctorExpr = typeMap.ConstructExpression ?? Expression.Lambda(Expression.New(request.DestinationType));
visitor.Visit(parameterReplacer.Visit(ctorExpr));
var expression = Expression.MemberInit(
visitor.NewExpression,
bindings.ToArray()
);
return(expression);
}
public Expression CreateMapExpression(ExpressionRequest request,
Expression instanceParameter, ConcurrentDictionary <ExpressionRequest, int> typePairCount)
{
var typeMap = ConfigurationProvider.ResolveTypeMap(request.SourceType,
request.DestinationType);
if (typeMap == null)
{
const string MessageFormat = "Missing map from {0} to {1}. Create using Mapper.CreateMap<{0}, {1}>.";
var message = string.Format(MessageFormat, request.SourceType.Name, request.DestinationType.Name);
throw new InvalidOperationException(message);
}
var parameterReplacer = instanceParameter is ParameterExpression ? new ParameterReplacementVisitor(instanceParameter) : null;
var customProjection = typeMap.CustomProjection;
if (customProjection != null)
{
return(parameterReplacer == null ? customProjection.Body : parameterReplacer.Visit(customProjection.Body));
}
var bindings = new List <MemberBinding>();
var visitCount = typePairCount.AddOrUpdate(request, 0, (tp, i) => i + 1);
if (visitCount >= typeMap.MaxDepth)
{
if (ConfigurationProvider.AllowNullDestinationValues)
{
return(null);
}
}
else
{
bindings = CreateMemberBindings(request, typeMap, instanceParameter, typePairCount);
}
Expression constructorExpression = typeMap.DestinationConstructorExpression(instanceParameter);
if (parameterReplacer != null)
{
constructorExpression = parameterReplacer.Visit(constructorExpression);
}
var visitor = new NewFinderVisitor();
visitor.Visit(constructorExpression);
var expression = Expression.MemberInit(
visitor.NewExpression,
bindings.ToArray()
);
return(expression);
}
public Expression CreateMapExpression(ExpressionRequest request, Expression instanceParameter, IDictionary <ExpressionRequest, int> typePairCount)
{
var typeMap = _configurationProvider.ResolveTypeMap(request.SourceType,
request.DestinationType);
if (typeMap == null)
{
throw QueryMapperHelper.MissingMapException(request.SourceType, request.DestinationType);
}
if (typeMap.CustomProjection != null)
{
return(typeMap.CustomProjection.ReplaceParameters(instanceParameter));
}
var bindings = new List <MemberBinding>();
var depth = GetDepth(request, typePairCount);
if (typeMap.MaxDepth > 0 && depth >= typeMap.MaxDepth)
{
if (typeMap.Profile.AllowNullDestinationValues)
{
return(null);
}
}
else
{
bindings = CreateMemberBindings(request, typeMap, instanceParameter, typePairCount);
}
Expression constructorExpression = DestinationConstructorExpression(typeMap, instanceParameter);
if (instanceParameter is ParameterExpression)
{
constructorExpression = ((LambdaExpression)constructorExpression).ReplaceParameters(instanceParameter);
}
var visitor = new NewFinderVisitor();
visitor.Visit(constructorExpression);
var expression = MemberInit(
visitor.NewExpression,
bindings.ToArray()
);
return(expression);
}
public Expression CreateMapExpression(ExpressionRequest request,
Expression instanceParameter, Internal.IDictionary<ExpressionRequest, int> typePairCount)
{
var typeMap = ConfigurationProvider.ResolveTypeMap(request.SourceType,
request.DestinationType);
if (typeMap == null)
{
const string MessageFormat = "Missing map from {0} to {1}. Create using Mapper.CreateMap<{0}, {1}>.";
var message = string.Format(MessageFormat, request.SourceType.Name, request.DestinationType.Name);
throw new InvalidOperationException(message);
}
var bindings = CreateMemberBindings(request, typeMap, instanceParameter, typePairCount);
var parameterReplacer = new ParameterReplacementVisitor(instanceParameter);
var visitor = new NewFinderVisitor();
var constructorExpression = typeMap.DestinationConstructorExpression(instanceParameter);
visitor.Visit(parameterReplacer.Visit(constructorExpression));
var expression = Expression.MemberInit(
visitor.NewExpression,
bindings.ToArray()
);
return expression;
}
private Expression CreateMapExpressionCore(ExpressionRequest request, Expression instanceParameter, TypePairCount typePairCount, TypeMap typeMap, LetPropertyMaps letPropertyMaps)
{
var memberBindings = new List <MemberBinding>();
var depth = GetDepth(request, typePairCount);
if (typeMap.MaxDepth > 0 && depth >= typeMap.MaxDepth)
{
if (typeMap.Profile.AllowNullDestinationValues)
{
return(null);
}
}
else
{
memberBindings = CreateMemberBindings();
}
Expression constructorExpression = DestinationConstructorExpression(typeMap, instanceParameter, letPropertyMaps);
if (instanceParameter is ParameterExpression)
{
constructorExpression = ((LambdaExpression)constructorExpression).ReplaceParameters(instanceParameter);
}
var visitor = new NewFinderVisitor();
visitor.Visit(constructorExpression);
var expression = MemberInit(
visitor.NewExpression,
memberBindings.ToArray()
);
return(expression);
List <MemberBinding> CreateMemberBindings()
{
var bindings = new List <MemberBinding>();
foreach (var propertyMap in typeMap.PropertyMaps
.Where(pm => (!pm.ExplicitExpansion || request.MembersToExpand.Contains(pm.DestinationMember)) &&
pm.CanResolveValue && ReflectionHelper.CanBeSet(pm.DestinationMember))
.OrderBy(pm => pm.DestinationName))
{
var propertyExpression = new PropertyExpression(propertyMap);
letPropertyMaps.Push(propertyExpression);
CreateMemberBinding(propertyExpression);
letPropertyMaps.Pop();
}
return(bindings);
void CreateMemberBinding(PropertyExpression propertyExpression)
{
var propertyMap = propertyExpression.PropertyMap;
var result = ResolveExpression(propertyMap, request.SourceType, instanceParameter, letPropertyMaps);
propertyExpression.Expression = result.ResolutionExpression;
var propertyTypeMap = _configurationProvider.ResolveTypeMap(result.Type, propertyMap.DestinationType);
var propertyRequest = new ExpressionRequest(result.Type, propertyMap.DestinationType, request.MembersToExpand, request);
if (propertyRequest.AlreadyExists && depth >= _configurationProvider.RecursiveQueriesMaxDepth)
{
return;
}
var binder = _configurationProvider.Binders.FirstOrDefault(b => b.IsMatch(propertyMap, propertyTypeMap, result));
if (binder == null)
{
var message =
$"Unable to create a map expression from {propertyMap.SourceMember?.DeclaringType?.Name}.{propertyMap.SourceMember?.Name} ({result.Type}) to {propertyMap.DestinationMember.DeclaringType?.Name}.{propertyMap.DestinationName} ({propertyMap.DestinationType})";
throw new AutoMapperMappingException(message, null, typeMap.Types, typeMap, propertyMap);
}
var bindExpression = binder.Build(_configurationProvider, propertyMap, propertyTypeMap, propertyRequest, result, typePairCount, letPropertyMaps);
if (bindExpression == null)
{
return;
}
var rhs = propertyMap.ValueTransformers
.Concat(typeMap.ValueTransformers)
.Concat(typeMap.Profile.ValueTransformers)
.Where(vt => vt.IsMatch(propertyMap))
.Aggregate(bindExpression.Expression, (current, vtConfig) => ToType(ReplaceParameters(vtConfig.TransformerExpression, ToType(current, vtConfig.ValueType)), propertyMap.DestinationType));
bindExpression = bindExpression.Update(rhs);
bindings.Add(bindExpression);
}
}
}