Initial debug adapter protocol implementation

Cargo.toml

@@ -6,6 +6,7 @@ members = [
   "helix-tui",
   "helix-syntax",
   "helix-lsp",
+  "helix-dap"
 ]
 
 # Build helix-syntax in release mode to make the code path faster in development.

helix-dap/Cargo.toml

@@ -0,0 +1,20 @@
+[package]
+name = "helix-dap"
+version = "0.3.0"
+authors = ["Blaž Hrastnik <blaz@mxxn.io>"]
+edition = "2018"
+license = "MPL-2.0"
+description = "DAP client implementation for Helix project"
+categories = ["editor"]
+repository = "https://github.com/helix-editor/helix"
+homepage = "https://helix-editor.com"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = "1.0"
+log = "0.4"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+thiserror = "1.0"
+tokio = { version = "1.9", features = ["rt", "rt-multi-thread", "io-util", "io-std", "time", "process", "macros", "fs", "parking_lot"] }

helix-dap/examples/dap-basic.rs

@@ -0,0 +1,51 @@
+use helix_dap::{Client, Result, SourceBreakpoint};
+
+#[tokio::main]
+pub async fn main() -> Result<()> {
+    let mut client = Client::start("nc", vec!["127.0.0.1", "7777"], 0)?;
+
+    println!("init: {:?}", client.initialize().await);
+    println!("caps: {:?}", client.capabilities());
+    println!(
+        "launch: {:?}",
+        client.launch("/tmp/godebug/main".to_owned()).await
+    );
+
+    println!(
+        "breakpoints: {:?}",
+        client
+            .set_breakpoints(
+                "/tmp/godebug/main.go".to_owned(),
+                vec![SourceBreakpoint {
+                    line: 6,
+                    column: Some(2),
+                }]
+            )
+            .await
+    );
+
+    let mut _in = String::new();
+    std::io::stdin()
+        .read_line(&mut _in)
+        .expect("Failed to read line");
+
+    println!("configurationDone: {:?}", client.configuration_done().await);
+    println!("stopped: {:?}", client.wait_for_stopped().await);
+    println!("stack trace: {:?}", client.stack_trace(1).await);
+
+    let mut _in = String::new();
+    std::io::stdin()
+        .read_line(&mut _in)
+        .expect("Failed to read line");
+
+    println!("continued: {:?}", client.continue_thread(0).await);
+
+    let mut _in = String::new();
+    std::io::stdin()
+        .read_line(&mut _in)
+        .expect("Failed to read line");
+
+    println!("disconnect: {:?}", client.disconnect().await);
+
+    Ok(())
+}