protected internal override MixinEntityExpression VisitMixinEntity(MixinEntityExpression me)
{
var bindings = VisitBindings(me.Bindings);
if (me.Bindings != bindings || me.EntityContext != null)
{
return(new MixinEntityExpression(me.Type, bindings, me.MainEntityAlias, me.FieldMixin, null));
}
return(me);
}
protected internal virtual MixinEntityExpression VisitMixinEntity(MixinEntityExpression me)
{
var bindings = Visit(me.Bindings, VisitFieldBinding);
var entityContext = me.EntityContext == null ? null : VisitEntityContextInfo(me.EntityContext);
if (me.Bindings != bindings || me.EntityContext != entityContext)
{
return(new MixinEntityExpression(me.Type, bindings, me.MainEntityAlias, me.FieldMixin, entityContext));
}
return(me);
}
BlockExpression AssignMixin(ParameterExpression e, MixinEntityExpression m)
{
var mixParam = Expression.Parameter(m.Type);
var mixBindings = new List <Expression>
{
Expression.Assign(mixParam, Expression.Call(e, MixinDeclarations.miMixin.MakeGenericMethod(m.Type))),
Expression.Call(retriever, miModifiablePostRetrieving.MakeGenericMethod(m.Type), mixParam)
};
mixBindings.AddRange(m.Bindings.Select(b =>
{
var field = Expression.Field(mixParam, b.FieldInfo);
var value = b.Binding is ChildProjectionExpression cpe ? VisitMListChildProjection(cpe, field) :
Convert(Visit(b.Binding), b.FieldInfo.FieldType);
return((Expression)Expression.Assign(field, value));
}));
return(Expression.Block(new[] { mixParam }, mixBindings));
}
protected internal override MixinEntityExpression VisitMixinEntity(MixinEntityExpression me)
{
throw new InvalidOperationException("Impossible to retrieve MixinEntity {0} without their main entity".FormatWith(me.Type.Name));
}
