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vls replace v-analyzer #24

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9d00de1
vls replace v-analyzer
Avey777 Nov 7, 2025
a89ea80
Remove 'file://' before sending
Avey777 Nov 7, 2025
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285 changes: 149 additions & 136 deletions src/v.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -3,158 +3,171 @@ use zed::{CodeLabel, CodeLabelSpan, LanguageServerId};
use zed_extension_api::{self as zed, Result};

struct VExtension {
current_version: String,
cached_binary_path: Option<String>
current_version: String,
cached_binary_path: Option<String>,
}

fn try_local_install<T>(err: T, worktree: &zed::Worktree) -> Result<String, T> {
if let Some(path) = worktree.which("v-analyzer") {
return Ok(path);
}
return Err(err);
let home_dir = std::env::var("HOME").unwrap_or_else(|_| ".".into());
let local_vls = format!("{home}/.vmodules/vls/vls", home = home_dir);

if fs::metadata(&local_vls).map_or(false, |s| s.is_file()) {
return Ok(local_vls);
}

if let Some(path) = worktree.which("vls") {
return Ok(path);
}
Err(err)
}

fn language_server_binary_path_no_fallback(
selff: &mut VExtension,
language_server_id: &LanguageServerId,
worktree: &zed::Worktree,
selff: &mut VExtension,
language_server_id: &LanguageServerId,
worktree: &zed::Worktree,
) -> Result<String> {
if let Some(cache) = selff.cached_binary_path.clone() {
if let Some(local) = worktree.which("v-analyzer") {
if local != cache && fs::metadata(&cache).map_or(false, |stat| stat.is_file()) {
return Ok(cache);
}
} else {
return Ok(cache);
}
}

let (platform, arch) = zed::current_platform();
zed::set_language_server_installation_status(
&language_server_id,
&zed::LanguageServerInstallationStatus::CheckingForUpdate,
);

let asset_name = format!(
"v-analyzer-{os}-{arch}{extension}",
arch = match arch {
zed::Architecture::Aarch64 => "arm64",
zed::Architecture::X86 => "x86",
zed::Architecture::X8664 => "x86_64",
},
os = match platform {
zed::Os::Mac => "darwin",
zed::Os::Linux => "linux",
zed::Os::Windows => "windows",
},
extension = match platform {
zed::Os::Windows => ".exe",
_ => ""
},
);

let release = zed::latest_github_release(
"lv37/v-analyzer",
zed::GithubReleaseOptions {
require_assets: true,
pre_release: false,
},
)?;

let asset = release
.assets
.iter()
.find(|asset| asset.name == asset_name)
.ok_or_else(|| format!("no asset found matching {:?}", asset_name))?;


if selff.current_version != asset.download_url || !fs::metadata(&asset_name).map_or(false, |stat| stat.is_file()) {
zed::set_language_server_installation_status(
&language_server_id,
&zed::LanguageServerInstallationStatus::Downloading,
);

zed::download_file(
&asset.download_url,
&asset_name,
zed::DownloadedFileType::Uncompressed,
)
.map_err(|e| format!("failed to download file: {e}"))?;

zed::make_file_executable(&asset_name)?;

let entries =
fs::read_dir(".").map_err(|e| format!("failed to list working directory {e}"))?;
for entry in entries {
let entry = entry.map_err(|e| format!("failed to load directory entry {e}"))?;
if entry.file_name().to_str() != Some(&asset_name) {
fs::remove_dir_all(&entry.path()).ok();
}
}
}
selff.cached_binary_path = Some(asset_name.clone());
selff.current_version = release.version;
Ok(asset_name)
if let Some(cache) = selff.cached_binary_path.clone() {
if let Some(local) = worktree.which("vls") {
if local != cache && fs::metadata(&cache).map_or(false, |s| s.is_file()) {
return Ok(cache);
}
} else {
return Ok(cache);
}
}

let (platform, arch) = zed::current_platform();
zed::set_language_server_installation_status(
&language_server_id,
&zed::LanguageServerInstallationStatus::CheckingForUpdate,
);

let asset_name = format!(
"vls-{os}-{arch}{extension}",
arch = match arch {
zed::Architecture::Aarch64 => "arm64",
zed::Architecture::X86 => "x86",
zed::Architecture::X8664 => "x86_64",
},
os = match platform {
zed::Os::Mac => "darwin",
zed::Os::Linux => "linux",
zed::Os::Windows => "windows",
},
extension = match platform {
zed::Os::Windows => ".exe",
_ => "",
},
);

let release = zed::latest_github_release(
"vlang/vls",
zed::GithubReleaseOptions {
require_assets: true,
pre_release: false,
},
)?;

let asset = release
.assets
.iter()
.find(|asset| asset.name == asset_name)
.ok_or_else(|| format!("no asset found matching {:?}", asset_name))?;

if selff.current_version != asset.download_url
|| !fs::metadata(&asset_name).map_or(false, |s| s.is_file())
{
zed::set_language_server_installation_status(
&language_server_id,
&zed::LanguageServerInstallationStatus::Downloading,
);

zed::download_file(
&asset.download_url,
&asset_name,
zed::DownloadedFileType::Uncompressed,
)
.map_err(|e| format!("failed to download file: {e}"))?;

zed::make_file_executable(&asset_name)?;

let entries =
fs::read_dir(".").map_err(|e| format!("failed to list working directory {e}"))?;
for entry in entries {
let entry = entry.map_err(|e| format!("failed to load directory entry {e}"))?;
if entry.file_name().to_str() != Some(&asset_name) {
fs::remove_dir_all(&entry.path()).ok();
}
}
}

selff.cached_binary_path = Some(asset_name.clone());
selff.current_version = release.version;
Ok(asset_name)
}

impl VExtension {
fn language_server_binary_path(
&mut self,
language_server_id: &LanguageServerId,
worktree: &zed::Worktree,
) -> Result<String> {
return language_server_binary_path_no_fallback(self, language_server_id, worktree)
.or_else(|a| try_local_install(a, worktree));
}
fn language_server_binary_path(
&mut self,
language_server_id: &LanguageServerId,
worktree: &zed::Worktree,
) -> Result<String> {
language_server_binary_path_no_fallback(self, language_server_id, worktree)
.or_else(|a| try_local_install(a, worktree))
}
}

impl zed::Extension for VExtension {
fn new() -> Self {
Self {
cached_binary_path: None,
current_version: "".to_string()
}
}

fn language_server_command(
&mut self,
language_server_id: &LanguageServerId,
worktree: &zed::Worktree,
) -> Result<zed::Command> {
Ok(zed::Command {
command: self.language_server_binary_path(language_server_id, worktree)?,
args: vec![],
env: Default::default(),
})
}

fn label_for_completion(
&self,
_language_server_id: &LanguageServerId,
completion: zed::lsp::Completion,
) -> Option<zed::CodeLabel> {
let (label, start_idx) = match (completion.kind, completion.detail) {
(_, None) => (completion.label, 0),
(Some(zed::lsp::CompletionKind::Function), Some(a)) => (a, 3),
(Some(zed::lsp::CompletionKind::Method), Some(a)) => {
let pure = after_first(&a, ')').unwrap_or(a)[1..].to_string();
(format!("fn {}", pure), 3)
}
(_, Some(a)) => (format!("{} {}", completion.label, a), 0),
};

Some(CodeLabel {
spans: vec![CodeLabelSpan::code_range(start_idx..label.len())],
filter_range: (0..(label.len() - start_idx)).into(),
code: label,
})
}
fn new() -> Self {
Self {
cached_binary_path: None,
current_version: "".to_string(),
}
}

fn language_server_command(
&mut self,
language_server_id: &LanguageServerId,
worktree: &zed::Worktree,
) -> Result<zed::Command> {
let mut cmd = zed::Command {
command: self.language_server_binary_path(language_server_id, worktree)?,
args: vec![],
env: Vec::new(),
};
cmd.env
.push(("VLS_URI_STRIP_FILE_SCHEME".to_string(), "1".to_string()));

Ok(cmd)
}

fn label_for_completion(
&self,
_language_server_id: &LanguageServerId,
completion: zed::lsp::Completion,
) -> Option<zed::CodeLabel> {
let (label, start_idx) = match (completion.kind, completion.detail) {
(_, None) => (completion.label, 0),
(Some(zed::lsp::CompletionKind::Function), Some(a)) => (a, 3),
(Some(zed::lsp::CompletionKind::Method), Some(a)) => {
let pure = after_first(&a, ')').unwrap_or(a)[1..].to_string();
(format!("fn {}", pure), 3)
}
(_, Some(a)) => (format!("{} {}", completion.label, a), 0),
};

Some(CodeLabel {
spans: vec![CodeLabelSpan::code_range(start_idx..label.len())],
filter_range: (0..(label.len() - start_idx)).into(),
code: label,
})
}
}

fn after_first(in_string: &str, delim: char) -> Option<String> {
let mut splitter = in_string.splitn(2, delim);
splitter.next()?;
Some(splitter.next()?.to_string())
let mut splitter = in_string.splitn(2, delim);
splitter.next()?;
Some(splitter.next()?.to_string())
}

zed::register_extension!(VExtension);