feat: add crystalline support

Author: nicklatch

Cargo.lock

@@ -0,0 +1,12 @@
+[package]
+name = "zed_crystal"
+version = "0.0.1"
+edition = "2021"
+publish = false
+
+[lib]
+path = "src/crystal.rs"
+crate-type = ["cdylib"]
+
+[dependencies]
+zed_extension_api = "0.1.0"

Cargo.toml

@@ -1,11 +1,20 @@
 authors = ["Margret Riegert <[email protected]>"]
-description = "Syntax highlighting for Crystal"
+description = "Syntax highlighting and LSP support for Crystal"
 id = "crystal"
 name = "Crystal"
 repository = "https://github.com/crystal-lang-tools/zed-crystal"
 schema_version = 1
 version = "0.0.1"
 
-[grammars.crystal]
-commit = "61cc201c8eb3b6fd4d4eb3e0ac6c303a580eeb6b"
-repository = "https://github.com/crystal-lang-tools/tree-sitter"
+# Use Ruby grammar for now until Crystal grammar is more complete
+[grammars.ruby]
+repository = "https://github.com/tree-sitter/tree-sitter-ruby"
+commit = "7dbc1e2d0e2d752577655881f73b4573f3fe85d4"
+
+[language_servers.crystalline]
+name = "crystalline"
+language = "Crystal"
+
+# [grammars.crystal]
+# commit = "61cc201c8eb3b6fd4d4eb3e0ac6c303a580eeb6b"
+# repository = "https://github.com/crystal-lang-tools/tree-sitter"

extension.toml

@@ -0,0 +1,26 @@
+use zed_extension_api::{self as zed, Result};
+
+struct CrystalExtension;
+
+impl zed::Extension for CrystalExtension {
+    fn new() -> Self {
+        Self
+    }
+
+    fn language_server_command(
+        &mut self,
+        _language_server_id: &zed::LanguageServerId,
+        worktree: &zed::Worktree,
+    ) -> Result<zed::Command> {
+        let path = worktree.which("crystalline").ok_or_else(|| {
+            "Please install crystalline manually and make sure it is on $PATH.".to_string()
+        })?;
+        Ok(zed::Command {
+            command: path,
+            args: vec![],
+            env: Default::default(),
+        })
+    }
+}
+
+zed::register_extension!(CrystalExtension);