step_result

Step result type for the sans-IO core.

The outcome of a single state transition — what happened after processing a message. Carries the new state and at most one effect.

Three variants:

Done — the agent produced a final answer
Continue — the agent needs more work (inference, tools)
Failed — an unrecoverable error occurred

Types

StepResult

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Result of a single state transition in the agent loop.

pub type StepResult {
  Done(state: state.AgentState, message: message.Message)
  Continue(state: state.AgentState, effect: effect.Effect)
  Failed(state: state.AgentState, error: error.AiError)
}

Constructors

```
Done(state: state.AgentState, message: message.Message)
```
The agent produced a final answer. No further effects needed.
```
Continue(state: state.AgentState, effect: effect.Effect)
```
The agent needs more work. Contains the next effect for the runtime.

Failed(state: state.AgentState, error: error.AiError)

An unrecoverable error occurred.