Enum TaskGraphError 

pub enum TaskGraphError {
    DuplicateNodeId(String),
    UnknownDependency {
        node: String,
        dep: String,
    },
    Cycle(String),
    TooManyNodes {
        count: usize,
        max: usize,
    },
    DepthExceeded {
        depth: usize,
        max: usize,
    },
    UnknownTool {
        node: String,
        tool: String,
    },
    NodeNotFound(String),
    DiffInvalid(String),
}

Error variants produced during TaskGraph construction or validation.

Variants

DuplicateNodeId(String)

Two nodes share the same NodeId.

UnknownDependency

A depends_on entry references a NodeId not present in the graph.

Fields

node: String

The node that declared the bad dependency.

dep: String

The referenced id that does not exist.

Cycle(String)

The dependency edges contain at least one cycle.

TooManyNodes

The graph exceeds MAX_NODES.

Fields

count: usize

Actual node count.

max: usize

The limit (MAX_NODES).

DepthExceeded

The longest root-to-leaf path exceeds MAX_DEPTH.

Fields

depth: usize

Computed depth.

max: usize

The limit (MAX_DEPTH).

UnknownTool

A node lists a tool not present in the provided catalog.

Fields

node: String

The node with the invalid allowlist entry.

tool: String

The tool name that was not found in the catalog.

NodeNotFound(String)

A referenced node id was not found in the graph.

DiffInvalid(String)

The diff is structurally invalid (e.g. would leave an empty graph).

Trait Implementations

impl Clone for TaskGraphError

fn clone(&self) -> TaskGraphError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TaskGraphError

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

Formats the value using the given formatter.

impl Display for TaskGraphError

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

Formats the value using the given formatter.

impl Error for TaskGraphError

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.

impl PartialEq for TaskGraphError

fn eq(&self, other: &TaskGraphError) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for TaskGraphError

impl StructuralPartialEq for TaskGraphError