Public declaration syntax from forge-rs/crates/forge-agent/src/context_manager.rs
Original source SHA-256: fffd8cfc51712e9c21f0c9fdfe862e616c5374cc18fe8c99acac5e32fe4e6f83
Function bodies and constant values are omitted. This is not the complete implementation.

Source line 22
#[derive(Debug, Clone, Copy)]
pub enum PruningStrategy {
    /// Remove the oldest non-system messages first.
    RemoveOldest,
    /// Keep system prompt + the last N messages (sliding window).
    SlidingWindow {
        /// Maximum number of recent messages to keep (in addition to system).
        keep_last: usize,
    },
    /// Summarize older messages into a single system message.
    /// (Future: will use the model to generate a summary.)
    Summarize,
}

Source line 37
#[derive(Debug, Clone)]
pub struct ContextWindowConfig {
/// Maximum number of tokens the model supports.

pub max_context_tokens: u64,
/// Threshold ratio (0.0–1.0) at which to start pruning.

/// Default: 0.85 (prune when 85% of context is used).

pub threshold_ratio: f64,
/// Estimated tokens per message for the simple estimator.

/// Default: 4 (roughly 4 tokens per word, ~100 words per message = 400).

pub tokens_per_char: f64,
/// Pruning strategy to use when threshold is exceeded.

pub strategy: PruningStrategy
}

Source line 80
pub struct ContextWindowManager {

}

Source line 86
pub fn new(config: ContextWindowConfig) -> Self;

Source line 91
pub fn for_context_size(max_tokens: u64) -> Self;

Source line 102
pub fn estimate_tokens(&self, messages: &[ModelMessage]) -> u64;

Source line 116
pub fn threshold_tokens(&self) -> u64;