debugger: Allow locators to generate full debug scenarios (#30014)

Closes #ISSUE

Release Notes:

- N/A

---------

Co-authored-by: Anthony <anthony@zed.dev>
Co-authored-by: Remco Smits <djsmits12@gmail.com>

crates/dap/src/registry.rs

@@ -1,9 +1,9 @@
 use anyhow::Result;
 use async_trait::async_trait;
 use collections::FxHashMap;
-use gpui::{App, Global};
+use gpui::{App, Global, SharedString};
 use parking_lot::RwLock;
-use task::{DebugRequest, SpawnInTerminal};
+use task::{DebugRequest, DebugScenario, SpawnInTerminal, TaskTemplate};
 
 use crate::adapters::{DebugAdapter, DebugAdapterName};
 use std::{collections::BTreeMap, sync::Arc};
@@ -11,15 +11,17 @@ use std::{collections::BTreeMap, sync::Arc};
 /// Given a user build configuration, locator creates a fill-in debug target ([DebugRequest]) on behalf of the user.
 #[async_trait]
 pub trait DapLocator: Send + Sync {
+    fn name(&self) -> SharedString;
     /// Determines whether this locator can generate debug target for given task.
-    fn accepts(&self, build_config: &SpawnInTerminal) -> bool;
+    fn create_scenario(&self, build_config: &TaskTemplate, adapter: &str) -> Option<DebugScenario>;
+
     async fn run(&self, build_config: SpawnInTerminal) -> Result<DebugRequest>;
 }
 
 #[derive(Default)]
 struct DapRegistryState {
     adapters: BTreeMap<DebugAdapterName, Arc<dyn DebugAdapter>>,
-    locators: FxHashMap<String, Arc<dyn DapLocator>>,
+    locators: FxHashMap<SharedString, Arc<dyn DapLocator>>,
 }
 
 #[derive(Clone, Default)]
@@ -48,15 +50,15 @@ impl DapRegistry {
         );
     }
 
-    pub fn add_locator(&self, name: String, locator: Arc<dyn DapLocator>) {
-        let _previous_value = self.0.write().locators.insert(name, locator);
+    pub fn add_locator(&self, locator: Arc<dyn DapLocator>) {
+        let _previous_value = self.0.write().locators.insert(locator.name(), locator);
         debug_assert!(
             _previous_value.is_none(),
             "Attempted to insert a new debug locator when one is already registered"
         );
     }
 
-    pub fn locators(&self) -> FxHashMap<String, Arc<dyn DapLocator>> {
+    pub fn locators(&self) -> FxHashMap<SharedString, Arc<dyn DapLocator>> {
         self.0.read().locators.clone()
     }