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public Update ( |
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| newExpression | The |
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| bindings | IEnumerable |
The |
| 리턴 | ||
/// <summary>
/// Visits the children of the <see cref="MemberInitExpression"/>.
/// </summary>
/// <param name="node">The expression to visit.</param>
/// <returns>The modified expression, if it or any subexpression was modified;
/// otherwise, returns the original expression.</returns>
protected internal virtual Expression VisitMemberInit(MemberInitExpression node)
{
return(node.Update(
VisitAndConvert(node.NewExpression, nameof(VisitMemberInit)),
Visit(node.Bindings, VisitMemberBinding)
));
}
protected override Expression VisitMemberInit(MemberInitExpression node)
{
// If we here, than eval the whole block failed, don't touch constructor!
_allowEval = false;
var newExpr = VisitAndConvert(node.NewExpression, "VisitMemberInit");
_allowEval = true;
// ReSharper disable once AssignNullToNotNullAttribute
return node.Update(newExpr, Visit(node.Bindings, VisitMemberBinding));
}
protected override ExpressionTree VisitMemberInit(MemberInitExpression node)
{
CheckChildrenCount(1 + node.Bindings.Count);
var n = (NewExpression)ExtractChildExpression(0);
var b = ExtractChildBindings(1, node.Bindings.Count);
var expression = node.Update(n, b);
return(CreateExpressionTree(expression));
}
/// <summary>
/// Visits the children of the <see cref="MemberInitExpression" />.
/// </summary>
/// <param name="node">The expression to visit.</param>
/// <returns>
/// The modified expression, if it or any subexpression was modified;
/// otherwise, returns the original expression.
/// </returns>
protected internal virtual Expression VisitMemberInit(MemberInitExpression node)
{
if (node == null)
{
throw new ArgumentNullException(nameof(node));
}
return(node.Update
(
VisitAndConvert(node.NewExpression, nameof(VisitMemberInit)),
Visit(node.Bindings, VisitMemberBinding)
));
}
protected override Expression VisitMemberInit(MemberInitExpression node)
{
var visitAndConvert = VisitAndConvert(node.NewExpression, "VisitMemberInit");
var readOnlyCollection = Visit(node.Bindings, VisitMemberBinding);
return node.Update(visitAndConvert, readOnlyCollection);
}
protected internal virtual Expression VisitMemberInit(MemberInitExpression node)
{
return(node.Update(this.VisitAndConvert <NewExpression>(node.NewExpression, "VisitMemberInit"), Visit <MemberBinding>(node.Bindings, new Func <MemberBinding, MemberBinding>(this.VisitMemberBinding))));
}
// 其他信息: 从“VisitMemberInit”调用时，重写“System.Linq.Expressions.NewExpression”类型的节点必须返回相同类型的非 null 值。或者，重写并更改“VisitMemberInit”，以便不访问此类型的子级。
protected override Expression VisitMemberInit(MemberInitExpression node)
{
NewExpression newExpr = this.Visit(node.NewExpression) as NewExpression;
var bindings = ExpressionVisitor.Visit(node.Bindings, this.VisitMemberBinding);
return node.Update(newExpr ?? node.NewExpression, bindings);
}