1use anyhow::Result;
 2use async_trait::async_trait;
 3use collections::FxHashMap;
 4use gpui::{App, Global, SharedString};
 5use language::LanguageName;
 6use parking_lot::RwLock;
 7use task::{
 8    AdapterSchema, AdapterSchemas, DebugRequest, DebugScenario, SpawnInTerminal, TaskTemplate,
 9};
10
11use crate::adapters::{DebugAdapter, DebugAdapterName};
12use std::{collections::BTreeMap, sync::Arc};
13
14/// Given a user build configuration, locator creates a fill-in debug target ([DebugScenario]) on behalf of the user.
15#[async_trait]
16pub trait DapLocator: Send + Sync {
17    fn name(&self) -> SharedString;
18    /// Determines whether this locator can generate debug target for given task.
19    async fn create_scenario(
20        &self,
21        build_config: &TaskTemplate,
22        resolved_label: &str,
23        adapter: &DebugAdapterName,
24    ) -> Option<DebugScenario>;
25
26    async fn run(&self, build_config: SpawnInTerminal) -> Result<DebugRequest>;
27}
28
29#[derive(Default)]
30struct DapRegistryState {
31    adapters: BTreeMap<DebugAdapterName, Arc<dyn DebugAdapter>>,
32    locators: FxHashMap<SharedString, Arc<dyn DapLocator>>,
33}
34
35#[derive(Clone, Default)]
36/// Stores available debug adapters.
37pub struct DapRegistry(Arc<RwLock<DapRegistryState>>);
38impl Global for DapRegistry {}
39
40impl DapRegistry {
41    pub fn global(cx: &mut App) -> &mut Self {
42        cx.default_global::<Self>()
43    }
44
45    pub fn add_adapter(&self, adapter: Arc<dyn DebugAdapter>) {
46        let name = adapter.name();
47        let _previous_value = self.0.write().adapters.insert(name, adapter);
48    }
49
50    pub fn add_locator(&self, locator: Arc<dyn DapLocator>) {
51        self.0.write().locators.insert(locator.name(), locator);
52    }
53
54    pub fn remove_adapter(&self, name: &str) {
55        self.0.write().adapters.remove(name);
56    }
57
58    pub fn remove_locator(&self, locator: &str) {
59        self.0.write().locators.remove(locator);
60    }
61
62    pub fn adapter_language(&self, adapter_name: &str) -> Option<LanguageName> {
63        self.adapter(adapter_name)
64            .and_then(|adapter| adapter.adapter_language_name())
65    }
66
67    pub fn adapters_schema(&self) -> task::AdapterSchemas {
68        let mut schemas = vec![];
69
70        let adapters = &self.0.read().adapters;
71
72        for (name, adapter) in adapters.into_iter() {
73            schemas.push(AdapterSchema {
74                adapter: name.clone().into(),
75                schema: adapter.dap_schema(),
76            });
77        }
78
79        AdapterSchemas(schemas)
80    }
81
82    pub fn locators(&self) -> FxHashMap<SharedString, Arc<dyn DapLocator>> {
83        self.0.read().locators.clone()
84    }
85
86    pub fn adapter(&self, name: &str) -> Option<Arc<dyn DebugAdapter>> {
87        self.0.read().adapters.get(name).cloned()
88    }
89
90    pub fn enumerate_adapters<B: FromIterator<DebugAdapterName>>(&self) -> B {
91        self.0.read().adapters.keys().cloned().collect()
92    }
93}