Files
llmx/codex-rs/core/src/conversation_history.rs
Ahmed Ibrahim 244687303b Persist search items (#3745)
Let's record the search items because they are part of the history.
2025-09-16 18:02:15 +00:00

121 lines
3.4 KiB
Rust

use codex_protocol::models::ResponseItem;
/// Transcript of conversation history
#[derive(Debug, Clone, Default)]
pub(crate) struct ConversationHistory {
/// The oldest items are at the beginning of the vector.
items: Vec<ResponseItem>,
}
impl ConversationHistory {
pub(crate) fn new() -> Self {
Self { items: Vec::new() }
}
/// Returns a clone of the contents in the transcript.
pub(crate) fn contents(&self) -> Vec<ResponseItem> {
self.items.clone()
}
/// `items` is ordered from oldest to newest.
pub(crate) fn record_items<I>(&mut self, items: I)
where
I: IntoIterator,
I::Item: std::ops::Deref<Target = ResponseItem>,
{
for item in items {
if !is_api_message(&item) {
continue;
}
self.items.push(item.clone());
}
}
pub(crate) fn replace(&mut self, items: Vec<ResponseItem>) {
self.items = items;
}
}
/// Anything that is not a system message or "reasoning" message is considered
/// an API message.
fn is_api_message(message: &ResponseItem) -> bool {
match message {
ResponseItem::Message { role, .. } => role.as_str() != "system",
ResponseItem::FunctionCallOutput { .. }
| ResponseItem::FunctionCall { .. }
| ResponseItem::CustomToolCall { .. }
| ResponseItem::CustomToolCallOutput { .. }
| ResponseItem::LocalShellCall { .. }
| ResponseItem::Reasoning { .. }
| ResponseItem::WebSearchCall { .. } => true,
ResponseItem::Other => false,
}
}
#[cfg(test)]
mod tests {
use super::*;
use codex_protocol::models::ContentItem;
fn assistant_msg(text: &str) -> ResponseItem {
ResponseItem::Message {
id: None,
role: "assistant".to_string(),
content: vec![ContentItem::OutputText {
text: text.to_string(),
}],
}
}
fn user_msg(text: &str) -> ResponseItem {
ResponseItem::Message {
id: None,
role: "user".to_string(),
content: vec![ContentItem::OutputText {
text: text.to_string(),
}],
}
}
#[test]
fn filters_non_api_messages() {
let mut h = ConversationHistory::default();
// System message is not an API message; Other is ignored.
let system = ResponseItem::Message {
id: None,
role: "system".to_string(),
content: vec![ContentItem::OutputText {
text: "ignored".to_string(),
}],
};
h.record_items([&system, &ResponseItem::Other]);
// User and assistant should be retained.
let u = user_msg("hi");
let a = assistant_msg("hello");
h.record_items([&u, &a]);
let items = h.contents();
assert_eq!(
items,
vec![
ResponseItem::Message {
id: None,
role: "user".to_string(),
content: vec![ContentItem::OutputText {
text: "hi".to_string()
}]
},
ResponseItem::Message {
id: None,
role: "assistant".to_string(),
content: vec![ContentItem::OutputText {
text: "hello".to_string()
}]
}
]
);
}
}