Enum TruncationStrategy 

pub enum TruncationStrategy {
    None,
    Last(usize),
    First(usize),
    FirstLast {
        first: usize,
        last: usize,
    },
    SlidingWindow {
        max_tokens: usize,
    },
}

Truncation strategy for chat history (Story 5.2)

Variants

None

Keep all messages (default)

Last(usize)

Keep the last N messages

First(usize)

Keep the first N messages

FirstLast

Keep the first first and last last messages

Fields

first: usize

last: usize

SlidingWindow

Drop oldest messages until total estimated tokens <= max_tokens

Fields

max_tokens: usize

Implementations

impl TruncationStrategy

pub fn from_config(config: &StepConfig) -> Self

Parse from StepConfig keys: truncation_strategy, truncation_count, truncation_first, truncation_last, truncation_max_tokens

Trait Implementations

impl Clone for TruncationStrategy

fn clone(&self) -> TruncationStrategy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TruncationStrategy

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

Formats the value using the given formatter.