Struct Conversation 

pub struct Conversation { /* private fields */ }

The message log the harness owns: system, user, assistant, assistant-tool-calls, tool-response. Never a vendor type.

Implementations

impl Conversation

pub fn with_system(prompt: impl Into<String>) -> Self

Start a conversation with a system prompt.

pub fn push(&mut self, message: Message)

Append a message.

pub fn push_user(&mut self, content: impl Into<String>)

Append a user message (goals, directed corrections).

pub fn push_tool_calls(&mut self, calls: Vec<ProviderToolCall>)

Append an assistant tool-call turn.

pub fn push_tool_response( &mut self, call_id: impl Into<String>, content: impl Into<String>, )

Append one tool response, correlated by call id.

pub fn messages(&self) -> &[Message]

The log, in order.

pub fn estimated_chars(&self) -> usize

Approximate serialized context size without relying on a provider tokenizer. Runtime thresholds apply a conservative chars-per-token conversion before calling this method.

pub fn compact_with_control(&mut self, control: impl Into<String>)

Replace closed history with a deterministic control projection while preserving every unresolved provider call exactly. Full closed history remains in the event ledger; this only changes the next model request.

pub fn unresolved_call_ids(&self) -> Vec<String>

Tool calls that have no recorded response yet. A checkpoint must preserve these exactly (system 14’s ControlFrame).

pub fn len(&self) -> usize

Number of messages in the log.

pub fn is_empty(&self) -> bool

Whether the log is empty.

Trait Implementations

impl Clone for Conversation

fn clone(&self) -> Conversation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Conversation

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

Formats the value using the given formatter.

impl Default for Conversation

fn default() -> Conversation

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Conversation

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Conversation

fn eq(&self, other: &Conversation) -> 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 Serialize for Conversation

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Conversation