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|
//! Driver for rust-analyzer.
//!
//! Based on cli flags, either spawns an LSP server, or runs a batch analysis
mod args;
use std::{convert::TryFrom, process};
use lsp_server::Connection;
use project_model::ProjectManifest;
use rust_analyzer::{
cli,
config::{Config, LinkedProject},
from_json, Result,
};
use vfs::AbsPathBuf;
#[cfg(all(feature = "mimalloc"))]
#[global_allocator]
static ALLOC: mimalloc::MiMalloc = mimalloc::MiMalloc;
fn main() {
if let Err(err) = try_main() {
eprintln!("{}", err);
process::exit(101);
}
}
fn try_main() -> Result<()> {
setup_logging()?;
let args = args::Args::parse()?;
match args.command {
args::Command::RunServer => run_server()?,
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, all } => {
cli::diagnostics(path.as_ref(), load_output_dirs, with_proc_macro, all)?
}
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() -> Result<()> {
std::env::set_var("RUST_BACKTRACE", "short");
env_logger::try_init_from_env("RA_LOG")?;
profile::init();
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"))),
}),
};
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 = std::env::current_dir()?;
AbsPathBuf::assert(cwd)
}
};
let mut config = Config::new(root_path);
if let Some(json) = initialize_params.initialization_options {
config.update(json);
}
config.update_caps(&initialize_params.capabilities);
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);
config.linked_projects = discovered.into_iter().map(LinkedProject::from).collect();
}
config
};
rust_analyzer::main_loop(config, connection)?;
io_threads.join()?;
log::info!("server did shut down");
Ok(())
}
|
