Piotr/z 2588 php (#2721)

Release Notes:

- Added syntax highlighting & Intelephense LSP support for PHP language.
([#46](https://github.com/zed-industries/community/issues/406)).

Cargo.toml

@@ -117,6 +117,7 @@ tree-sitter-heex = { git = "https://github.com/phoenixframework/tree-sitter-heex
 tree-sitter-json = { git = "https://github.com/tree-sitter/tree-sitter-json", rev = "40a81c01a40ac48744e0c8ccabbaba1920441199" }
 tree-sitter-rust = "0.20.3"
 tree-sitter-markdown = { git = "https://github.com/MDeiml/tree-sitter-markdown", rev = "330ecab87a3e3a7211ac69bbadc19eabecdb1cca" }
+tree-sitter-php = { git = "https://github.com/tree-sitter/tree-sitter-php", rev = "d43130fd1525301e9826f420c5393a4d169819fc" }
 tree-sitter-python = "0.20.2"
 tree-sitter-toml = { git = "https://github.com/tree-sitter/tree-sitter-toml", rev = "342d9be207c2dba869b9967124c679b5e6fd0ebe" }
 tree-sitter-typescript = { git = "https://github.com/tree-sitter/tree-sitter-typescript", rev = "5d20856f34315b068c41edaee2ac8a100081d259" }

crates/language/src/language.rs

@@ -831,6 +831,7 @@ impl LanguageRegistry {
                                     Ok(language) => {
                                         let language = Arc::new(language);
                                         let mut state = this.state.write();
+
                                         state.add(language.clone());
                                         state.mark_language_loaded(id);
                                         if let Some(mut txs) = state.loading_languages.remove(&id) {

crates/lsp/src/lsp.rs

@@ -151,16 +151,17 @@ impl LanguageServer {
         let stdin = server.stdin.take().unwrap();
         let stout = server.stdout.take().unwrap();
         let mut server = Self::new_internal(
-            server_id,
+            server_id.clone(),
             stdin,
             stout,
             Some(server),
             root_path,
             code_action_kinds,
             cx,
-            |notification| {
+            move |notification| {
                 log::info!(
-                    "unhandled notification {}:\n{}",
+                    "{} unhandled notification {}:\n{}",
+                    server_id,
                     notification.method,
                     serde_json::to_string_pretty(
                         &notification

crates/project/src/project.rs

@@ -2709,7 +2709,6 @@ impl Project {
             Some(language_server) => language_server,
             None => return Ok(None),
         };
-
         let this = match this.upgrade(cx) {
             Some(this) => this,
             None => return Err(anyhow!("failed to upgrade project handle")),

crates/zed/Cargo.toml

@@ -119,6 +119,7 @@ tree-sitter-toml.workspace = true
 tree-sitter-typescript.workspace = true
 tree-sitter-ruby.workspace = true
 tree-sitter-html.workspace = true
+tree-sitter-php.workspace = true
 tree-sitter-scheme.workspace = true
 tree-sitter-svelte.workspace = true
 tree-sitter-racket.workspace = true

crates/zed/src/languages.rs

@@ -13,6 +13,7 @@ mod json;
 #[cfg(feature = "plugin_runtime")]
 mod language_plugin;
 mod lua;
+mod php;
 mod python;
 mod ruby;
 mod rust;
@@ -145,6 +146,11 @@ pub fn init(languages: Arc<LanguageRegistry>, node_runtime: Arc<NodeRuntime>) {
             node_runtime.clone(),
         ))],
     );
+    language(
+        "php",
+        tree_sitter_php::language(),
+        vec![Arc::new(php::IntelephenseLspAdapter::new(node_runtime))],
+    );
 }
 
 #[cfg(any(test, feature = "test-support"))]

crates/zed/src/languages/php.rs

@@ -0,0 +1,133 @@
+use anyhow::{anyhow, Result};
+
+use async_trait::async_trait;
+use collections::HashMap;
+
+use language::{LanguageServerName, LspAdapter, LspAdapterDelegate};
+use lsp::LanguageServerBinary;
+use node_runtime::NodeRuntime;
+
+use smol::{fs, stream::StreamExt};
+use std::{
+    any::Any,
+    ffi::OsString,
+    path::{Path, PathBuf},
+    sync::Arc,
+};
+use util::ResultExt;
+
+fn intelephense_server_binary_arguments(server_path: &Path) -> Vec<OsString> {
+    vec![server_path.into(), "--stdio".into()]
+}
+
+pub struct IntelephenseVersion(String);
+
+pub struct IntelephenseLspAdapter {
+    node: Arc<NodeRuntime>,
+}
+
+impl IntelephenseLspAdapter {
+    const SERVER_PATH: &'static str = "node_modules/intelephense/lib/intelephense.js";
+
+    #[allow(unused)]
+    pub fn new(node: Arc<NodeRuntime>) -> Self {
+        Self { node }
+    }
+}
+
+#[async_trait]
+impl LspAdapter for IntelephenseLspAdapter {
+    async fn name(&self) -> LanguageServerName {
+        LanguageServerName("intelephense".into())
+    }
+
+    async fn fetch_latest_server_version(
+        &self,
+        _delegate: &dyn LspAdapterDelegate,
+    ) -> Result<Box<dyn 'static + Send + Any>> {
+        Ok(Box::new(IntelephenseVersion(
+            self.node.npm_package_latest_version("intelephense").await?,
+        )) as Box<_>)
+    }
+
+    async fn fetch_server_binary(
+        &self,
+        version: Box<dyn 'static + Send + Any>,
+        container_dir: PathBuf,
+        _delegate: &dyn LspAdapterDelegate,
+    ) -> Result<LanguageServerBinary> {
+        let version = version.downcast::<IntelephenseVersion>().unwrap();
+        let server_path = container_dir.join(Self::SERVER_PATH);
+
+        if fs::metadata(&server_path).await.is_err() {
+            self.node
+                .npm_install_packages(&container_dir, [("intelephense", version.0.as_str())])
+                .await?;
+        }
+        Ok(LanguageServerBinary {
+            path: self.node.binary_path().await?,
+            arguments: intelephense_server_binary_arguments(&server_path),
+        })
+    }
+
+    async fn cached_server_binary(
+        &self,
+        container_dir: PathBuf,
+        _: &dyn LspAdapterDelegate,
+    ) -> Option<LanguageServerBinary> {
+        get_cached_server_binary(container_dir, &self.node).await
+    }
+
+    async fn installation_test_binary(
+        &self,
+        container_dir: PathBuf,
+    ) -> Option<LanguageServerBinary> {
+        get_cached_server_binary(container_dir, &self.node).await
+    }
+
+    async fn label_for_completion(
+        &self,
+        _item: &lsp::CompletionItem,
+        _language: &Arc<language::Language>,
+    ) -> Option<language::CodeLabel> {
+        None
+    }
+
+    async fn initialization_options(&self) -> Option<serde_json::Value> {
+        None
+    }
+    async fn language_ids(&self) -> HashMap<String, String> {
+        HashMap::from_iter([("PHP".into(), "php".into())])
+    }
+}
+
+async fn get_cached_server_binary(
+    container_dir: PathBuf,
+    node: &NodeRuntime,
+) -> Option<LanguageServerBinary> {
+    (|| async move {
+        let mut last_version_dir = None;
+        let mut entries = fs::read_dir(&container_dir).await?;
+        while let Some(entry) = entries.next().await {
+            let entry = entry?;
+            if entry.file_type().await?.is_dir() {
+                last_version_dir = Some(entry.path());
+            }
+        }
+        let last_version_dir = last_version_dir.ok_or_else(|| anyhow!("no cached binary"))?;
+        let server_path = last_version_dir.join(IntelephenseLspAdapter::SERVER_PATH);
+        if server_path.exists() {
+            Ok(LanguageServerBinary {
+                path: node.binary_path().await?,
+                arguments: intelephense_server_binary_arguments(&server_path),
+            })
+        } else {
+            Err(anyhow!(
+                "missing executable in directory {:?}",
+                last_version_dir
+            ))
+        }
+    })()
+    .await
+    .log_err()
+}

crates/zed/src/languages/php/config.toml

@@ -0,0 +1,11 @@
+name = "PHP"
+path_suffixes = ["php"]
+first_line_pattern = '^#!.*php'
+line_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 = true, newline = false, not_in = ["string"] },
+]

crates/zed/src/languages/php/highlights.scm

@@ -0,0 +1,123 @@
+(php_tag) @tag
+"?>" @tag
+
+; Types
+
+(primitive_type) @type.builtin
+(cast_type) @type.builtin
+(named_type (name) @type) @type
+(named_type (qualified_name) @type) @type
+
+; Functions
+
+(array_creation_expression "array" @function.builtin)
+(list_literal "list" @function.builtin)
+
+(method_declaration
+  name: (name) @function.method)
+
+(function_call_expression
+  function: [(qualified_name (name)) (name)] @function)
+
+(scoped_call_expression
+  name: (name) @function)
+
+(member_call_expression
+  name: (name) @function.method)
+
+(function_definition
+  name: (name) @function)
+
+; Member
+
+(property_element
+  (variable_name) @property)
+
+(member_access_expression
+  name: (variable_name (name)) @property)
+(member_access_expression
+  name: (name) @property)
+
+; Variables
+
+(relative_scope) @variable.builtin
+
+((name) @constant
+ (#match? @constant "^_?[A-Z][A-Z\\d_]+$"))
+((name) @constant.builtin
+ (#match? @constant.builtin "^__[A-Z][A-Z\d_]+__$"))
+
+((name) @constructor
+ (#match? @constructor "^[A-Z]"))
+
+((name) @variable.builtin
+ (#eq? @variable.builtin "this"))
+
+(variable_name) @variable
+
+; Basic tokens
+[
+  (string)
+  (string_value)
+  (encapsed_string)
+  (heredoc)
+  (heredoc_body)
+  (nowdoc_body)
+] @string
+(boolean) @constant.builtin
+(null) @constant.builtin
+(integer) @number
+(float) @number
+(comment) @comment
+
+"$" @operator
+
+; Keywords
+
+"abstract" @keyword
+"as" @keyword
+"break" @keyword
+"case" @keyword
+"catch" @keyword
+"class" @keyword
+"const" @keyword
+"continue" @keyword
+"declare" @keyword
+"default" @keyword
+"do" @keyword
+"echo" @keyword
+"else" @keyword
+"elseif" @keyword
+"enum" @keyword
+"enddeclare" @keyword
+"endforeach" @keyword
+"endif" @keyword
+"endswitch" @keyword
+"endwhile" @keyword
+"extends" @keyword
+"final" @keyword
+"finally" @keyword
+"foreach" @keyword
+"function" @keyword
+"global" @keyword
+"if" @keyword
+"implements" @keyword
+"include_once" @keyword
+"include" @keyword
+"insteadof" @keyword
+"interface" @keyword
+"namespace" @keyword
+"new" @keyword
+"private" @keyword
+"protected" @keyword
+"public" @keyword
+"require_once" @keyword
+"require" @keyword
+"return" @keyword
+"static" @keyword
+"switch" @keyword
+"throw" @keyword
+"trait" @keyword
+"try" @keyword
+"use" @keyword
+"while" @keyword

crates/zed/src/languages/php/injections.scm

@@ -0,0 +1,3 @@
+((text) @content
+ (#set! "language" "html")
+ (#set! "combined"))

crates/zed/src/languages/php/outline.scm

@@ -0,0 +1,26 @@
+(class_declaration
+    "class" @context
+    name: (name) @name
+    ) @item
+
+(function_definition
+    "function" @context
+    name: (_) @name
+    ) @item
+
+
+
+(method_declaration
+    "function" @context
+    name: (_) @name
+    ) @item
+
+(interface_declaration
+    "interface" @context
+    name: (_) @name
+    ) @item
+
+(enum_declaration
+    "enum" @context
+    name: (_) @name
+    ) @item

crates/zed/src/languages/php/tags.scm

@@ -0,0 +1,40 @@
+(namespace_definition
+  name: (namespace_name) @name) @module
+
+(interface_declaration
+  name: (name) @name) @definition.interface
+
+(trait_declaration
+  name: (name) @name) @definition.interface
+
+(class_declaration
+  name: (name) @name) @definition.class
+
+(class_interface_clause [(name) (qualified_name)] @name) @impl
+
+(property_declaration
+  (property_element (variable_name (name) @name))) @definition.field
+
+(function_definition
+  name: (name) @name) @definition.function
+
+(method_declaration
+  name: (name) @name) @definition.function
+
+(object_creation_expression
+  [
+    (qualified_name (name) @name)
+    (variable_name (name) @name)
+  ]) @reference.class
+
+(function_call_expression
+  function: [
+    (qualified_name (name) @name)
+    (variable_name (name)) @name
+  ]) @reference.call
+
+(scoped_call_expression
+  name: (name) @name) @reference.call
+
+(member_call_expression
+  name: (name) @name) @reference.call