internal override Expression VisitMemberInit(MemberInitExpression init)
{
MemberAssignmentAnalysis previous = null;
foreach (MemberBinding binding in init.Bindings)
{
MemberAssignment memberAssignment = binding as MemberAssignment;
if (memberAssignment != null)
{
MemberAssignmentAnalysis memberAssignmentAnalysis = Analyze(entity, memberAssignment.Expression);
if (memberAssignmentAnalysis.MultiplePathsFound)
{
multiplePathsFound = true;
return(init);
}
Exception ex = memberAssignmentAnalysis.CheckCompatibleAssignments(init.Type, ref previous);
if (ex != null)
{
incompatibleAssignmentsException = ex;
return(init);
}
if (pathFromEntity.Count == 0)
{
pathFromEntity.AddRange(memberAssignmentAnalysis.GetExpressionsToTargetEntity());
}
}
}
return(init);
}
internal static MemberAssignmentAnalysis Analyze(Expression entityInScope, Expression assignmentExpression)
{
MemberAssignmentAnalysis memberAssignmentAnalysis = new MemberAssignmentAnalysis(entityInScope);
memberAssignmentAnalysis.Visit(assignmentExpression);
return(memberAssignmentAnalysis);
}
internal Exception CheckCompatibleAssignments(Type targetType, ref MemberAssignmentAnalysis previous)
{
if (previous == null)
{
previous = this;
return(null);
}
Expression[] expressionsToTargetEntity = previous.GetExpressionsToTargetEntity();
Expression[] expressionsToTargetEntity2 = GetExpressionsToTargetEntity();
return(CheckCompatibleAssignments(targetType, expressionsToTargetEntity, expressionsToTargetEntity2));
}
internal static void Analyze(MemberInitExpression mie, PathBox pb)
{
EntityProjectionAnalyzer entityProjectionAnalyzer = new EntityProjectionAnalyzer(pb, mie.Type);
MemberAssignmentAnalysis previous = null;
foreach (MemberBinding binding in mie.Bindings)
{
MemberAssignment memberAssignment = binding as MemberAssignment;
entityProjectionAnalyzer.Visit(memberAssignment.Expression);
if (memberAssignment != null)
{
MemberAssignmentAnalysis memberAssignmentAnalysis = MemberAssignmentAnalysis.Analyze(pb.ParamExpressionInScope, memberAssignment.Expression);
if (memberAssignmentAnalysis.IncompatibleAssignmentsException != null)
{
throw memberAssignmentAnalysis.IncompatibleAssignmentsException;
}
Type memberType = GetMemberType(memberAssignment.Member);
Expression[] expressionsBeyondTargetEntity = memberAssignmentAnalysis.GetExpressionsBeyondTargetEntity();
if (expressionsBeyondTargetEntity.Length == 0)
{
throw new NotSupportedException(string.Format(CultureInfo.CurrentCulture, "Initializing instances of the entity type {0} with the expression {1} is not supported.", memberType, memberAssignment.Expression));
}
MemberExpression memberExpression = expressionsBeyondTargetEntity[expressionsBeyondTargetEntity.Length - 1] as MemberExpression;
if (memberExpression != null && memberExpression.Member.Name != memberAssignment.Member.Name)
{
throw new NotSupportedException(string.Format(CultureInfo.CurrentCulture, "Cannot assign the value from the {0} property to the {1} property. When projecting results into a entity type, the property names of the source type and the target type must match for the properties being projected.", memberExpression.Member.Name, memberAssignment.Member.Name));
}
memberAssignmentAnalysis.CheckCompatibleAssignments(mie.Type, ref previous);
bool flag = CommonUtil.IsClientType(memberType);
if (CommonUtil.IsClientType(memberExpression.Type) && !flag)
{
throw new NotSupportedException(string.Format(CultureInfo.CurrentCulture, "Constructing or initializing instances of the type {0} with the expression {1} is not supported.", memberType, memberAssignment.Expression));
}
}
}
}
