Expression BuildBody(Expression owner, int index, MappingStrategy strategy, ConversionStep conversion)
{
if (index == sourcePropertyChain.Length - 1)
{
return(SetValue(strategy, conversion, owner));
}
if (nullableProperties.Contains(sourcePropertyChain[index]) == false)
{
return(BuildBody(Expression.Property(owner, sourcePropertyChain[index + 1]), index + 1, strategy, conversion));
}
var local = Expression.Variable(owner.Type);
var property = new PropertyIfNotNullInnerExpression(Expression.Property(local, sourcePropertyChain[index + 1]));
var body = BuildBody(property, index + 1, strategy, conversion);
var expression = new PropertyIfNotNullExpression(owner, body, local, TargetValueType);
property.Owner = expression;
return(expression);
}
Expression VisitCustom(PropertyIfNotNullExpression node)
{
var member = node.Inner as MemberExpression;
if (member != null)
{
Append(member.Member.Name);
}
var convert = node.Inner as UnaryExpression;
if (convert != null && convert.NodeType == ExpressionType.Convert)
{
Visit(convert.Operand);
}
else
{
Visit(node.Inner);
}
return(node);
}
void OutRightHandSideOf(PropertyIfNotNullExpression owner)
{
Visit(owner.Owner);
Append("?!");
}
