Enum PoolError

pub enum PoolError {
    DuplicateNodeId(NodeId),
    ParentNotFound(NodeId),
    ChildNotFound(NodeId),
    NodeNotFound(NodeId),
    OrphanNode(NodeId),
    InvalidParenting {
        child: NodeId,
        alleged_parent: NodeId,
    },
    InvalidNodeId {
        nodeid: NodeId,
        new_node_id: NodeId,
    },
    EmptyPool,
    CyclicReference(NodeId),
    InvalidNodeMove(NodeId),
    NodeLocked(NodeId),
    NodeDeleted(NodeId),
    CannotRemoveRoot,
}

Represents all possible errors that can occur in the node pool operations.

Variants

DuplicateNodeId(NodeId)

Error occurs when attempting to add a node with an ID that already exists in the pool.

ParentNotFound(NodeId)

Error occurs when trying to access a parent node that doesn’t exist in the pool.

ChildNotFound(NodeId)

Error occurs when trying to access a child node that doesn’t exist in the pool.

NodeNotFound(NodeId)

Error occurs when trying to access a node that doesn’t exist in the pool.

OrphanNode(NodeId)

Error occurs when a node exists in the pool but has no parent.

InvalidParenting

Error occurs when attempting to establish an invalid parent-child relationship.

Fields

child: NodeId

alleged_parent: NodeId

InvalidNodeId

Error occurs when attempting to replace a node with a different ID.

Fields

nodeid: NodeId

new_node_id: NodeId

EmptyPool

Error occurs when attempting to perform operations on an empty pool.

CyclicReference(NodeId)

Error occurs when attempting to create a cycle in the node hierarchy.

InvalidNodeMove(NodeId)

Error occurs when attempting to move a node to an invalid position.

NodeLocked(NodeId)

Error occurs when attempting to perform operations on a locked node.

NodeDeleted(NodeId)

Error occurs when attempting to perform operations on a deleted node.

CannotRemoveRoot

Error occurs when attempting to remove the root node.

Implementations

impl PoolError

pub fn node_id(&self) -> Option<&NodeId>

Returns the node ID associated with this error, if any.

Trait Implementations

impl Debug for PoolError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for PoolError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for PoolError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.