Start tracking edits performed by the agent (#27064)

Release Notes:

- N/A

---------

Co-authored-by: Danilo Leal <daniloleal09@gmail.com>
Co-authored-by: Agus Zubiaga <hi@aguz.me>

crates/assistant_tool/src/assistant_tool.rs

@@ -1,16 +1,14 @@
+mod action_log;
 mod tool_registry;
 mod tool_working_set;
 
-use std::sync::Arc;
-
 use anyhow::Result;
-use collections::{HashMap, HashSet};
-use gpui::Context;
 use gpui::{App, Entity, SharedString, Task};
-use language::Buffer;
 use language_model::LanguageModelRequestMessage;
 use project::Project;
+use std::sync::Arc;
 
+pub use crate::action_log::*;
 pub use crate::tool_registry::*;
 pub use crate::tool_working_set::*;
 
@@ -54,57 +52,3 @@ pub trait Tool: 'static + Send + Sync {
         cx: &mut App,
     ) -> Task<Result<String>>;
 }
-
-/// Tracks actions performed by tools in a thread
-#[derive(Debug)]
-pub struct ActionLog {
-    /// Buffers that user manually added to the context, and whose content has
-    /// changed since the model last saw them.
-    stale_buffers_in_context: HashSet<Entity<Buffer>>,
-    /// Buffers that we want to notify the model about when they change.
-    tracked_buffers: HashMap<Entity<Buffer>, TrackedBuffer>,
-}
-
-#[derive(Debug, Default)]
-struct TrackedBuffer {
-    version: clock::Global,
-}
-
-impl ActionLog {
-    /// Creates a new, empty action log.
-    pub fn new() -> Self {
-        Self {
-            stale_buffers_in_context: HashSet::default(),
-            tracked_buffers: HashMap::default(),
-        }
-    }
-
-    /// Track a buffer as read, so we can notify the model about user edits.
-    pub fn buffer_read(&mut self, buffer: Entity<Buffer>, cx: &mut Context<Self>) {
-        let tracked_buffer = self.tracked_buffers.entry(buffer.clone()).or_default();
-        tracked_buffer.version = buffer.read(cx).version();
-    }
-
-    /// Mark a buffer as edited, so we can refresh it in the context
-    pub fn buffer_edited(&mut self, buffers: HashSet<Entity<Buffer>>, cx: &mut Context<Self>) {
-        for buffer in &buffers {
-            let tracked_buffer = self.tracked_buffers.entry(buffer.clone()).or_default();
-            tracked_buffer.version = buffer.read(cx).version();
-        }
-
-        self.stale_buffers_in_context.extend(buffers);
-    }
-
-    /// Iterate over buffers changed since last read or edited by the model
-    pub fn stale_buffers<'a>(&'a self, cx: &'a App) -> impl Iterator<Item = &'a Entity<Buffer>> {
-        self.tracked_buffers
-            .iter()
-            .filter(|(buffer, tracked)| tracked.version != buffer.read(cx).version)
-            .map(|(buffer, _)| buffer)
-    }
-
-    /// Takes and returns the set of buffers pending refresh, clearing internal state.
-    pub fn take_stale_buffers_in_context(&mut self) -> HashSet<Entity<Buffer>> {
-        std::mem::take(&mut self.stale_buffers_in_context)
-    }
-}