Struct TaskDag 

pub struct TaskDag { /* private fields */ }

Directed Acyclic Graph for task dependencies

Implementations

impl TaskDag

pub fn new() -> Self

Create a new empty DAG

pub fn add_node(&mut self, task_id: TaskId, task_name: impl Into<String>)

Add a node to the DAG

pub fn add_dependency( &mut self, task_id: TaskId, depends_on: TaskId, ) -> Result<()>

Add a dependency relationship: task_id depends on depends_on

This means depends_on must complete before task_id can execute.

Errors

Returns an error if either task is not found in the DAG or if adding this dependency would create a cycle.

pub fn remove_dependency(&mut self, task_id: TaskId, depends_on: TaskId)

Remove a dependency relationship

pub fn get_node(&self, task_id: &TaskId) -> Option<&DagNode>

Get a node by task ID

pub fn get_roots(&self) -> Vec<TaskId>

Get all root nodes (nodes with no dependencies)

pub fn get_leaves(&self) -> Vec<TaskId>

Get all leaf nodes (nodes with no dependents)

pub fn get_dependencies(&self, task_id: &TaskId) -> Option<Vec<TaskId>>

Get the dependencies of a task

pub fn get_dependents(&self, task_id: &TaskId) -> Option<Vec<TaskId>>

Get the dependents of a task

pub fn validate(&self) -> Result<()>

Validate the DAG structure (check for cycles)

Errors

Returns an error if the DAG contains a cycle.

pub fn topological_sort(&self) -> Result<Vec<TaskId>>

Perform topological sort on the DAG

Returns tasks in execution order (dependencies before dependents).

Errors

Returns an error if the DAG contains a cycle.

pub fn node_count(&self) -> usize

Get the number of nodes in the DAG

pub fn edge_count(&self) -> usize

Get the number of edges in the DAG

pub fn is_empty(&self) -> bool

Check if the DAG is empty

pub fn clear(&mut self)

Clear all nodes and edges

Trait Implementations

impl Clone for TaskDag

fn clone(&self) -> TaskDag

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TaskDag

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

Formats the value using the given formatter.

impl Default for TaskDag

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for TaskDag

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for TaskDag

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.