268fa1cbaf
This PR adds **internal** ability to run arbitrary language servers via WebAssembly extensions. The functionality isn't exposed yet - we're just landing this in this early state because there have been a lot of changes to the `LspAdapter` trait, and other language server logic. ## Next steps * Currently, wasm extensions can only define how to *install* and run a language server, they can't yet implement the other LSP adapter methods, such as formatting completion labels and workspace symbols. * We don't have an automatic way to install or develop these types of extensions * We don't have a way to package these types of extensions in our extensions repo, to make them available via our extensions API. * The Rust extension API crate, `zed-extension-api` has not yet been published to crates.io, because we still consider the API a work in progress. Release Notes: - N/A --------- Co-authored-by: Marshall <marshall@zed.dev> Co-authored-by: Nathan <nathan@zed.dev> Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>
63 lines
1.5 KiB
Rust
63 lines
1.5 KiB
Rust
pub struct Guest;
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pub use wit::*;
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pub type Result<T, E = String> = core::result::Result<T, E>;
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pub trait Extension: Send + Sync {
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fn new() -> Self
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where
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Self: Sized;
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fn language_server_command(
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&mut self,
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config: wit::LanguageServerConfig,
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worktree: &wit::Worktree,
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) -> Result<Command>;
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}
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#[macro_export]
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macro_rules! register_extension {
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($extension_type:ty) => {
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#[export_name = "init-extension"]
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pub extern "C" fn __init_extension() {
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zed_extension_api::register_extension(|| {
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Box::new(<$extension_type as zed_extension_api::Extension>::new())
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});
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}
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};
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}
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#[doc(hidden)]
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pub fn register_extension(build_extension: fn() -> Box<dyn Extension>) {
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unsafe { EXTENSION = Some((build_extension)()) }
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}
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fn extension() -> &'static mut dyn Extension {
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unsafe { EXTENSION.as_deref_mut().unwrap() }
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}
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static mut EXTENSION: Option<Box<dyn Extension>> = None;
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#[cfg(target_arch = "wasm32")]
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#[link_section = "zed:api-version"]
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#[doc(hidden)]
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pub static ZED_API_VERSION: [u8; 6] = *include_bytes!(concat!(env!("OUT_DIR"), "/version_bytes"));
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mod wit {
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wit_bindgen::generate!({
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exports: { world: super::Component },
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skip: ["init-extension"]
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});
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}
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struct Component;
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impl wit::Guest for Component {
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fn language_server_command(
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config: wit::LanguageServerConfig,
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worktree: &wit::Worktree,
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) -> Result<wit::Command> {
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extension().language_server_command(config, worktree)
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}
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}
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