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refactor transcript view to handle HistoryCells (#3538)

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No (intended) functional change.

This refactors the transcript view to hold a list of HistoryCells
instead of a list of Lines. This simplifies and makes much of the logic
more robust, as well as laying the groundwork for future changes, e.g.
live-updating history cells in the transcript.

Similar to #2879 in goal. Fixes #2755.
This commit is contained in:
Jeremy Rose
2025-09-13 19:23:14 -07:00
committed by GitHub
parent bac8a427f3
commit 4891ee29c5
9 changed files with 309 additions and 389 deletions
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14
codex-rs/core/tests/suite/fork_conversation.rs
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@@ -104,7 +104,8 @@ async fn fork_conversation_twice_drops_to_first_message() {
items
};
// Compute expected prefixes after each fork by truncating base rollout at nth-from-last user input.
// Compute expected prefixes after each fork by truncating base rollout
// strictly before the nth user input (0-based).
let base_items = read_items(&base_path);
let find_user_input_positions = |items: &[RolloutItem]| -> Vec<usize> {
let mut pos = Vec::new();
@@ -126,11 +127,8 @@ async fn fork_conversation_twice_drops_to_first_message() {
};
let user_inputs = find_user_input_positions(&base_items);
// After dropping last user input (n=1), cut strictly before that input if present, else empty.
let cut1 = user_inputs
.get(user_inputs.len().saturating_sub(1))
.copied()
.unwrap_or(0);
// After cutting at nth user input (n=1 → second user message), cut strictly before that input.
let cut1 = user_inputs.get(1).copied().unwrap_or(0);
let expected_after_first: Vec<RolloutItem> = base_items[..cut1].to_vec();
// After dropping again (n=1 on fork1), compute expected relative to fork1's rollout.
@@ -161,12 +159,12 @@ async fn fork_conversation_twice_drops_to_first_message() {
serde_json::to_value(&expected_after_first).unwrap()
);
// Fork again with n=1 → drops the (new) last user message, leaving only the first.
// Fork again with n=0 → drops the (new) last user message, leaving only the first.
let NewConversation {
conversation: codex_fork2,
..
} = conversation_manager
.fork_conversation(1, config_for_fork.clone(), fork1_path.clone())
.fork_conversation(0, config_for_fork.clone(), fork1_path.clone())
.await
.expect("fork 2");