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|
//! Driver for rust-analyzer.
//!
//! Based on cli flags, either spawns an LSP server, or runs a batch analysis
mod args;
mod logger;
use std::{convert::TryFrom, env, fs, path::PathBuf, process};
use lsp_server::Connection;
use project_model::ProjectManifest;
use rust_analyzer::{cli, config::Config, from_json, lsp_ext::supports_utf8, Result};
use vfs::AbsPathBuf;
#[cfg(all(feature = "mimalloc"))]
#[global_allocator]
static ALLOC: mimalloc::MiMalloc = mimalloc::MiMalloc;
#[cfg(all(feature = "jemalloc", not(target_env = "msvc")))]
#[global_allocator]
static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;
fn main() {
if let Err(err) = try_main() {
log::error!("Unexpected error: {}", err);
eprintln!("{}", err);
process::exit(101);
}
}
fn try_main() -> Result<()> {
let args = args::Args::parse()?;
#[cfg(debug_assertions)]
if args.wait_dbg || env::var("RA_WAIT_DBG").is_ok() {
#[allow(unused_mut)]
let mut d = 4;
while d == 4 {
d = 4;
}
}
setup_logging(args.log_file, args.no_buffering)?;
match args.command {
args::Command::RunServer => run_server()?,
args::Command::PrintConfigSchema => {
println!("{:#}", Config::json_schema());
}
args::Command::ProcMacro => proc_macro_srv::cli::run()?,
args::Command::Parse { no_dump } => cli::parse(no_dump)?,
args::Command::Symbols => cli::symbols()?,
args::Command::Highlight { rainbow } => cli::highlight(rainbow)?,
args::Command::AnalysisStats(cmd) => cmd.run(args.verbosity)?,
args::Command::Bench(cmd) => cmd.run(args.verbosity)?,
args::Command::Diagnostics { path, load_output_dirs, with_proc_macro } => {
cli::diagnostics(path.as_ref(), load_output_dirs, with_proc_macro)?
}
args::Command::Ssr { rules } => {
cli::apply_ssr_rules(rules)?;
}
args::Command::StructuredSearch { patterns, debug_snippet } => {
cli::search_for_patterns(patterns, debug_snippet)?;
}
args::Command::Version => println!("rust-analyzer {}", env!("REV")),
args::Command::Help => {}
}
Ok(())
}
fn setup_logging(log_file: Option<PathBuf>, no_buffering: bool) -> Result<()> {
env::set_var("RUST_BACKTRACE", "short");
let log_file = match log_file {
Some(path) => {
if let Some(parent) = path.parent() {
let _ = fs::create_dir_all(parent);
}
Some(fs::File::create(path)?)
}
None => None,
};
let filter = env::var("RA_LOG").ok();
logger::Logger::new(log_file, no_buffering, filter.as_deref()).install();
tracing_setup::setup_tracing()?;
profile::init();
Ok(())
}
mod tracing_setup {
use tracing::subscriber;
use tracing_subscriber::layer::SubscriberExt;
use tracing_subscriber::EnvFilter;
use tracing_subscriber::Registry;
use tracing_tree::HierarchicalLayer;
pub(crate) fn setup_tracing() -> super::Result<()> {
let filter = EnvFilter::from_env("CHALK_DEBUG");
let layer = HierarchicalLayer::default()
.with_indent_lines(true)
.with_ansi(false)
.with_indent_amount(2)
.with_writer(std::io::stderr);
let subscriber = Registry::default().with(filter).with(layer);
subscriber::set_global_default(subscriber)?;
Ok(())
}
}
fn run_server() -> Result<()> {
log::info!("server will start");
let (connection, io_threads) = Connection::stdio();
let (initialize_id, initialize_params) = connection.initialize_start()?;
log::info!("InitializeParams: {}", initialize_params);
let initialize_params =
from_json::<lsp_types::InitializeParams>("InitializeParams", initialize_params)?;
let server_capabilities = rust_analyzer::server_capabilities(&initialize_params.capabilities);
let initialize_result = lsp_types::InitializeResult {
capabilities: server_capabilities,
server_info: Some(lsp_types::ServerInfo {
name: String::from("rust-analyzer"),
version: Some(String::from(env!("REV"))),
}),
offset_encoding: if supports_utf8(&initialize_params.capabilities) {
Some("utf-8".to_string())
} else {
None
},
};
let initialize_result = serde_json::to_value(initialize_result).unwrap();
connection.initialize_finish(initialize_id, initialize_result)?;
if let Some(client_info) = initialize_params.client_info {
log::info!("Client '{}' {}", client_info.name, client_info.version.unwrap_or_default());
}
let config = {
let root_path = match initialize_params
.root_uri
.and_then(|it| it.to_file_path().ok())
.and_then(|it| AbsPathBuf::try_from(it).ok())
{
Some(it) => it,
None => {
let cwd = env::current_dir()?;
AbsPathBuf::assert(cwd)
}
};
let mut config = Config::new(root_path, initialize_params.capabilities);
if let Some(json) = initialize_params.initialization_options {
config.update(json);
}
if config.linked_projects().is_empty() {
let workspace_roots = initialize_params
.workspace_folders
.map(|workspaces| {
workspaces
.into_iter()
.filter_map(|it| it.uri.to_file_path().ok())
.filter_map(|it| AbsPathBuf::try_from(it).ok())
.collect::<Vec<_>>()
})
.filter(|workspaces| !workspaces.is_empty())
.unwrap_or_else(|| vec![config.root_path.clone()]);
let discovered = ProjectManifest::discover_all(&workspace_roots);
log::info!("discovered projects: {:?}", discovered);
if discovered.is_empty() {
log::error!("failed to find any projects in {:?}", workspace_roots);
}
config.discovered_projects = Some(discovered);
}
config
};
rust_analyzer::main_loop(config, connection)?;
io_threads.join()?;
log::info!("server did shut down");
Ok(())
}
|
