debugger: Add support for CodeLLDB (#28376)

Closes #ISSUE

Release Notes:

- N/A

crates/dap_adapters/src/codelldb.rs

@@ -0,0 +1,141 @@
+use std::{path::PathBuf, sync::OnceLock};
+
+use anyhow::{Result, bail};
+use async_trait::async_trait;
+use dap::adapters::latest_github_release;
+use gpui::AsyncApp;
+use task::{DebugAdapterConfig, DebugRequestType, DebugTaskDefinition};
+
+use crate::*;
+
+#[derive(Default)]
+pub(crate) struct CodeLldbDebugAdapter {
+    last_known_version: OnceLock<String>,
+}
+
+impl CodeLldbDebugAdapter {
+    const ADAPTER_NAME: &'static str = "CodeLLDB";
+}
+
+#[async_trait(?Send)]
+impl DebugAdapter for CodeLldbDebugAdapter {
+    fn name(&self) -> DebugAdapterName {
+        DebugAdapterName(Self::ADAPTER_NAME.into())
+    }
+
+    async fn install_binary(
+        &self,
+        version: AdapterVersion,
+        delegate: &dyn DapDelegate,
+    ) -> Result<()> {
+        adapters::download_adapter_from_github(
+            self.name(),
+            version,
+            adapters::DownloadedFileType::Vsix,
+            delegate,
+        )
+        .await?;
+
+        Ok(())
+    }
+
+    async fn fetch_latest_adapter_version(
+        &self,
+        delegate: &dyn DapDelegate,
+    ) -> Result<AdapterVersion> {
+        let release =
+            latest_github_release("vadimcn/codelldb", true, false, delegate.http_client()).await?;
+
+        let arch = match std::env::consts::ARCH {
+            "aarch64" => "arm64",
+            "x86_64" => "x64",
+            _ => {
+                return Err(anyhow!(
+                    "unsupported architecture {}",
+                    std::env::consts::ARCH
+                ));
+            }
+        };
+        let platform = match std::env::consts::OS {
+            "macos" => "darwin",
+            "linux" => "linux",
+            "windows" => "win32",
+            _ => {
+                return Err(anyhow!(
+                    "unsupported operating system {}",
+                    std::env::consts::OS
+                ));
+            }
+        };
+        let asset_name = format!("codelldb-{platform}-{arch}.vsix");
+        let _ = self.last_known_version.set(release.tag_name.clone());
+        let ret = AdapterVersion {
+            tag_name: release.tag_name,
+            url: release
+                .assets
+                .iter()
+                .find(|asset| asset.name == asset_name)
+                .ok_or_else(|| anyhow!("no asset found matching {:?}", asset_name))?
+                .browser_download_url
+                .clone(),
+        };
+
+        Ok(ret)
+    }
+
+    async fn get_installed_binary(
+        &self,
+        _: &dyn DapDelegate,
+        _: &DebugAdapterConfig,
+        _: Option<PathBuf>,
+        _: &mut AsyncApp,
+    ) -> Result<DebugAdapterBinary> {
+        let Some(version) = self.last_known_version.get() else {
+            bail!("Could not determine latest CodeLLDB version");
+        };
+        let adapter_path = paths::debug_adapters_dir().join(&Self::ADAPTER_NAME);
+        let version_path = adapter_path.join(format!("{}_{}", Self::ADAPTER_NAME, version));
+
+        let adapter_dir = version_path.join("extension").join("adapter");
+        let command = adapter_dir.join("codelldb");
+        let command = command
+            .to_str()
+            .map(ToOwned::to_owned)
+            .ok_or_else(|| anyhow!("Adapter path is expected to be valid UTF-8"))?;
+        Ok(DebugAdapterBinary {
+            command,
+            cwd: Some(adapter_dir),
+            ..Default::default()
+        })
+    }
+
+    fn request_args(&self, config: &DebugTaskDefinition) -> Value {
+        let mut args = json!({
+            "request": match config.request {
+                DebugRequestType::Launch(_) => "launch",
+                DebugRequestType::Attach(_) => "attach",
+            },
+        });
+        let map = args.as_object_mut().unwrap();
+        match &config.request {
+            DebugRequestType::Attach(attach) => {
+                map.insert("pid".into(), attach.process_id.into());
+            }
+            DebugRequestType::Launch(launch) => {
+                map.insert("program".into(), launch.program.clone().into());
+
+                if !launch.args.is_empty() {
+                    map.insert("args".into(), launch.args.clone().into());
+                }
+
+                if let Some(stop_on_entry) = config.stop_on_entry {
+                    map.insert("stopOnEntry".into(), stop_on_entry.into());
+                }
+                if let Some(cwd) = launch.cwd.as_ref() {
+                    map.insert("cwd".into(), cwd.to_string_lossy().into_owned().into());
+                }
+            }
+        }
+        args
+    }
+}

crates/dap_adapters/src/dap_adapters.rs

@@ -1,3 +1,4 @@
+mod codelldb;
 mod gdb;
 mod go;
 mod javascript;
@@ -9,6 +10,7 @@ use std::{net::Ipv4Addr, sync::Arc};
 
 use anyhow::{Result, anyhow};
 use async_trait::async_trait;
+use codelldb::CodeLldbDebugAdapter;
 use dap::{
     DapRegistry,
     adapters::{
@@ -26,6 +28,7 @@ use serde_json::{Value, json};
 use task::{DebugAdapterConfig, TCPHost};
 
 pub fn init(registry: Arc<DapRegistry>) {
+    registry.add_adapter(Arc::from(CodeLldbDebugAdapter::default()));
     registry.add_adapter(Arc::from(PythonDebugAdapter));
     registry.add_adapter(Arc::from(PhpDebugAdapter));
     registry.add_adapter(Arc::from(JsDebugAdapter::default()));