Add output of /auto to assistant panel

crates/assistant/src/assistant.rs

@@ -26,8 +26,9 @@ use semantic_index::{CloudEmbeddingProvider, SemanticIndex};
 use serde::{Deserialize, Serialize};
 use settings::{Settings, SettingsStore};
 use slash_command::{
-    active_command, default_command, diagnostics_command, fetch_command, file_command, now_command,
-    project_command, prompt_command, rustdoc_command, search_command, tabs_command, term_command,
+    active_command, auto_command, default_command, diagnostics_command, fetch_command,
+    file_command, now_command, project_command, prompt_command, rustdoc_command, search_command,
+    tabs_command, term_command,
 };
 use std::{
     fmt::{self, Display},
@@ -310,6 +311,7 @@ pub fn init(fs: Arc<dyn Fs>, client: Arc<Client>, cx: &mut AppContext) {
 
 fn register_slash_commands(cx: &mut AppContext) {
     let slash_command_registry = SlashCommandRegistry::global(cx);
+    slash_command_registry.register_command(auto_command::AutoCommand, true);
     slash_command_registry.register_command(file_command::FileSlashCommand, true);
     slash_command_registry.register_command(active_command::ActiveSlashCommand, true);
     slash_command_registry.register_command(tabs_command::TabsSlashCommand, true);

crates/assistant/src/slash_command.rs

@@ -18,6 +18,7 @@ use ui::ActiveTheme;
 use workspace::Workspace;
 
 pub mod active_command;
+pub mod auto_command;
 pub mod default_command;
 pub mod diagnostics_command;
 pub mod fetch_command;

crates/assistant/src/slash_command/auto_command.rs

@@ -0,0 +1,193 @@
+use super::create_label_for_command;
+use super::{SlashCommand, SlashCommandOutput};
+use crate::{CompletionProvider, LanguageModelRequest, LanguageModelRequestMessage, Role};
+use anyhow::{anyhow, Result};
+use futures::StreamExt;
+use gpui::{AppContext, Task, WeakView};
+use language::{CodeLabel, LspAdapterDelegate};
+use std::sync::{atomic::AtomicBool, Arc};
+use ui::WindowContext;
+use workspace::Workspace;
+
+pub(crate) struct AutoCommand;
+
+impl SlashCommand for AutoCommand {
+    fn name(&self) -> String {
+        "auto".into()
+    }
+
+    fn description(&self) -> String {
+        "Automatically infer what context to add, based on your prompt".into()
+    }
+
+    fn menu_text(&self) -> String {
+        "Automatically Infer Context".into()
+    }
+
+    fn label(&self, cx: &AppContext) -> CodeLabel {
+        create_label_for_command("auto", &["--prompt"], cx)
+    }
+
+    fn complete_argument(
+        self: Arc<Self>,
+        _query: String,
+        _cancellation_flag: Arc<AtomicBool>,
+        _workspace: Option<WeakView<Workspace>>,
+        _cx: &mut AppContext,
+    ) -> Task<Result<Vec<String>>> {
+        // There's no autocomplete for a prompt, since it's arbitrary text.
+        Task::ready(Ok(Vec::new()))
+    }
+
+    fn requires_argument(&self) -> bool {
+        true
+    }
+
+    fn run(
+        self: Arc<Self>,
+        argument: Option<&str>,
+        _workspace: WeakView<Workspace>,
+        _delegate: Arc<dyn LspAdapterDelegate>,
+        cx: &mut WindowContext,
+    ) -> Task<Result<SlashCommandOutput>> {
+        let Some(argument) = argument else {
+            return Task::ready(Err(anyhow!("missing prompt")));
+        };
+
+        let prompt = format!("{PROMPT_INSTRUCTIONS_BEFORE_SUMMARY}\n{SUMMARY}\n{PROMPT_INSTRUCTIONS_AFTER_SUMMARY}\n{argument}");
+        let request = LanguageModelRequest {
+            model: CompletionProvider::global(cx).model(),
+            messages: vec![LanguageModelRequestMessage {
+                role: Role::User,
+                content: prompt,
+            }],
+            stop: vec![],
+            temperature: 1.0,
+        };
+
+        let stream = CompletionProvider::global(cx).complete(request);
+        let mut wip_action: String = String::new();
+        let task: Task<Result<String>> = cx.spawn(|_cx| async move {
+            let mut actions_text = String::new();
+            let stream_completion = async {
+                let mut messages = stream.await?;
+
+                while let Some(message) = messages.next().await {
+                    let text = message?;
+
+                    chunked_line(&mut wip_action, &text, |line| {
+                        actions_text.push('/');
+                        actions_text.push_str(line);
+                        actions_text.push('\n');
+                    });
+
+                    smol::future::yield_now().await;
+                }
+
+                anyhow::Ok(())
+            };
+
+            stream_completion.await?;
+
+            Ok(actions_text)
+        });
+
+        // As a convenience, append /auto's argument to the end of the prompt so you don't have to write it again.
+        let argument = argument.to_string();
+
+        cx.background_executor().spawn(async move {
+            let mut text = task.await?;
+
+            text.push_str(&argument);
+
+            Ok(SlashCommandOutput {
+                text,
+                sections: Vec::new(),
+                run_commands_in_text: true,
+            })
+        })
+    }
+}
+const PROMPT_INSTRUCTIONS_BEFORE_SUMMARY: &str = r#"
+I'm going to give you a prompt. I don't want you to respond
+to the prompt itself. I want you to figure out which of the following
+actions on my project, if any, would help you answer the prompt.
+
+Here are the actions:
+
+## file
+
+This action's parameter is a file path to one of the files
+in the project. If you ask for this action, I will tell you
+the full contents of the file, so you  can learn all the
+details of the file.
+
+## search
+
+This action's parameter is a string to search for across
+the project. It will tell you which files this string
+(or similar strings; it is a semantic search) appear in,
+as well as some context of the lines surrounding each result.
+
+---
+
+That was the end of the list of actions.
+
+Here is an XML summary of each of the files in my project:
+"#;
+
+const PROMPT_INSTRUCTIONS_AFTER_SUMMARY: &str = r#"
+Actions have a cost, so only include actions that you think
+will be helpful to you in doing a great job answering the
+prompt in the future.
+
+You must respond ONLY with a list of actions you would like to
+perform. Each action should be on its own line, and followed by a space and then its parameter.
+
+Actions can be performed more than once with different parameters.
+Here is an example valid response:
+
+```
+file path/to/my/file.txt
+file path/to/another/file.txt
+search something to search for
+search something else to search for
+```
+
+Once again, do not forget: you must respond ONLY in the format of
+one action per line, and the action name should be followed by
+its parameter. Your response must not include anything other
+than a list of actions, with one action per line, in this format.
+It is extremely important that you do not deviate from this format even slightly!
+
+This is the end of my instructions for how to respond. The rest is the prompt:
+"#;
+
+const SUMMARY: &str = "";
+
+fn chunked_line(wip: &mut String, chunk: &str, mut on_line_end: impl FnMut(&str)) {
+    // The first iteration of the loop should just push to wip
+    // and nothing else. We only push what we encountered in
+    // previous iterations of the loop.
+    //
+    // This correctly handles both the scenario where no
+    // newlines are encountered (the loop will only run once,
+    // and so will only push to wip), as well as the scenario
+    // where the chunk contains at least one newline but
+    // does not end in a newline (the last iteration of the
+    // loop will update wip but will not run anything).
+    let mut is_first_iteration = true;
+
+    for line in chunk.split('\n') {
+        if is_first_iteration {
+            is_first_iteration = false;
+        } else {
+            // Since this isn't the first iteration of the loop, we definitely hit a newline
+            // at the end of the previous iteration! Run the function on whatever wip we have.
+            on_line_end(wip);
+            wip.clear();
+        }
+
+        wip.push_str(line);
+    }
+}