Extract Astro support into an extension (#9835)

This PR extracts Astro support into an extension and removes the
built-in Astro support from Zed.

Release Notes:

- Removed built-in support for Astro, in favor of making it available as
an extension. The Astro extension will be suggested for download when
you open a `.astro` file.

extensions/astro/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "zed_astro"
+version = "0.0.1"
+edition = "2021"
+publish = false
+license = "Apache-2.0"
+
+[lints]
+workspace = true
+
+[lib]
+path = "src/astro.rs"
+crate-type = ["cdylib"]
+
+[dependencies]
+zed_extension_api = "0.0.4"

extensions/astro/LICENSE-APACHE

@@ -0,0 +1 @@
+../../LICENSE-APACHE

extensions/astro/extension.toml

@@ -0,0 +1,15 @@
+id = "astro"
+name = "Astro"
+description = "Astro support."
+version = "0.0.1"
+schema_version = 1
+authors = ["Alvaro Gaona <alvgaona@gmail.com>"]
+repository = "https://github.com/zed-industries/zed"
+
+[language_servers.astro-language-server]
+name = "Astro Language Server"
+language = "Astro"
+
+[grammars.astro]
+repository = "https://github.com/virchau13/tree-sitter-astro"
+commit = "dfa0893bdc4bdfada102043404758c66e3580568"

extensions/astro/languages/astro/brackets.scm

@@ -0,0 +1,3 @@
+("{" @open "}" @close)
+("<" @open ">" @close)
+("\"" @open "\"" @close)

extensions/astro/languages/astro/config.toml

@@ -0,0 +1,23 @@
+name = "Astro"
+grammar = "astro"
+path_suffixes = ["astro"]
+block_comment = ["<!-- ", " -->"]
+autoclose_before = ";:.,=}])>"
+brackets = [
+    { start = "{", end = "}", close = true, newline = true },
+    { start = "[", end = "]", close = true, newline = true },
+    { start = "(", end = ")", close = true, newline = true },
+    { start = "<", end = ">", close = false, newline = true, not_in = ["string", "comment"] },
+    { start = "\"", end = "\"", close = true, newline = false, not_in = ["string", "comment"] },
+    { start = "'", end = "'", close = true, newline = false, not_in = ["string", "comment"] },
+    { start = "`", end = "`", close = true, newline = false, not_in = ["string"] },
+    { start = "/*", end = " */", close = true, newline = false, not_in = ["string", "comment"] },
+]
+word_characters = ["#", "$", "-"]
+scope_opt_in_language_servers = ["tailwindcss-language-server"]
+prettier_parser_name = "astro"
+prettier_plugins = ["prettier-plugin-astro"]
+
+[overrides.string]
+word_characters = ["-"]
+opt_into_language_servers = ["tailwindcss-language-server"]

extensions/astro/languages/astro/highlights.scm

@@ -0,0 +1,25 @@
+(tag_name) @tag
+(erroneous_end_tag_name) @keyword
+(doctype) @constant
+(attribute_name) @property
+(attribute_value) @string
+(comment) @comment
+
+[
+  (attribute_value)
+  (quoted_attribute_value)
+] @string
+
+"=" @operator
+
+[
+  "{"
+  "}"
+] @punctuation.bracket
+
+[
+  "<"
+  ">"
+  "</"
+  "/>"
+] @tag.delimiter

extensions/astro/languages/astro/injections.scm

@@ -0,0 +1,16 @@
+; inherits: html_tags
+(frontmatter
+  (raw_text) @content
+  (#set! "language" "typescript"))
+
+(interpolation
+  (raw_text) @content
+  (#set! "language" "tsx"))
+
+(script_element
+  (raw_text) @content
+  (#set! "language" "typescript"))
+
+(style_element
+  (raw_text) @content
+  (#set! "language" "css"))

extensions/astro/src/astro.rs

@@ -0,0 +1,100 @@
+use std::{env, fs};
+use zed_extension_api::{self as zed, Result};
+
+const SERVER_PATH: &str = "node_modules/@astrojs/language-server/bin/nodeServer.js";
+const PACKAGE_NAME: &str = "@astrojs/language-server";
+
+struct AstroExtension {
+    did_find_server: bool,
+}
+
+impl AstroExtension {
+    fn server_exists(&self) -> bool {
+        fs::metadata(SERVER_PATH).map_or(false, |stat| stat.is_file())
+    }
+
+    fn server_script_path(&mut self, config: zed::LanguageServerConfig) -> Result<String> {
+        let server_exists = self.server_exists();
+        if self.did_find_server && server_exists {
+            return Ok(SERVER_PATH.to_string());
+        }
+
+        zed::set_language_server_installation_status(
+            &config.name,
+            &zed::LanguageServerInstallationStatus::CheckingForUpdate,
+        );
+        let version = zed::npm_package_latest_version(PACKAGE_NAME)?;
+
+        if !server_exists
+            || zed::npm_package_installed_version(PACKAGE_NAME)?.as_ref() != Some(&version)
+        {
+            zed::set_language_server_installation_status(
+                &config.name,
+                &zed::LanguageServerInstallationStatus::Downloading,
+            );
+            let result = zed::npm_install_package(PACKAGE_NAME, &version);
+            match result {
+                Ok(()) => {
+                    if !self.server_exists() {
+                        Err(format!(
+                            "installed package '{PACKAGE_NAME}' did not contain expected path '{SERVER_PATH}'",
+                        ))?;
+                    }
+                }
+                Err(error) => {
+                    if !self.server_exists() {
+                        Err(error)?;
+                    }
+                }
+            }
+        }
+
+        self.did_find_server = true;
+        Ok(SERVER_PATH.to_string())
+    }
+}
+
+impl zed::Extension for AstroExtension {
+    fn new() -> Self {
+        Self {
+            did_find_server: false,
+        }
+    }
+
+    fn language_server_command(
+        &mut self,
+        config: zed::LanguageServerConfig,
+        _worktree: &zed::Worktree,
+    ) -> Result<zed::Command> {
+        let server_path = self.server_script_path(config)?;
+        Ok(zed::Command {
+            command: zed::node_binary_path()?,
+            args: vec![
+                env::current_dir()
+                    .unwrap()
+                    .join(&server_path)
+                    .to_string_lossy()
+                    .to_string(),
+                "--stdio".to_string(),
+            ],
+            env: Default::default(),
+        })
+    }
+
+    fn language_server_initialization_options(
+        &mut self,
+        _config: zed::LanguageServerConfig,
+        _worktree: &zed::Worktree,
+    ) -> Result<Option<String>> {
+        let initialization_options = r#"{
+            "provideFormatter": true,
+            "typescript": {
+                "tsdk": "node_modules/typescript/lib"
+            }
+        }"#;
+
+        Ok(Some(initialization_options.to_string()))
+    }
+}
+
+zed::register_extension!(AstroExtension);