Struct Planner 

pub struct Planner { /* private fields */ }

Planner: calls the LLM to generate a step list

Implementations

impl Planner

pub fn new( llm: Arc<dyn BaseChatModel<Error = ProviderError> + Send + Sync>, ) -> Self

Creates a new planner.

pub async fn plan(&self, objective: &str) -> Result<Plan, AgentError>

Generates an execution plan

pub async fn replan( &self, objective: &str, failed_step: &str, reason: &str, completed: &str, ) -> Result<Plan, AgentError>

Replans (when a step fails).

0.22.0 C4 fix: completed carries the already-finished steps and their results; the prompt injects them and explicitly asks for a plan of the remaining work, so a replan no longer re-executes everything (duplicate tool calls / duplicate cost) and the caller can splice the completed steps back into the returned plan.