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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 lsp_server::Connection;
use rust_analyzer::{
cli,
config::{Config, LinkedProject},
from_json, Result,
};
use crate::args::HelpPrinted;
use ra_project_model::ProjectManifest;
fn main() -> Result<()> {
setup_logging()?;
let args = match args::Args::parse()? {
Ok(it) => it,
Err(HelpPrinted) => return Ok(()),
};
match args.command {
args::Command::Parse { no_dump } => cli::parse(no_dump)?,
args::Command::Symbols => cli::symbols()?,
args::Command::Highlight { rainbow } => cli::highlight(rainbow)?,
args::Command::Stats {
randomize,
memory_usage,
only,
with_deps,
path,
load_output_dirs,
with_proc_macro,
} => cli::analysis_stats(
args.verbosity,
memory_usage,
path.as_ref(),
only.as_ref().map(String::as_ref),
with_deps,
randomize,
load_output_dirs,
with_proc_macro,
)?,
args::Command::Bench { path, what, load_output_dirs, with_proc_macro } => {
cli::analysis_bench(
args.verbosity,
path.as_ref(),
what,
load_output_dirs,
with_proc_macro,
)?
}
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::ProcMacro => run_proc_macro_srv()?,
args::Command::RunServer => run_server()?,
args::Command::Version => println!("rust-analyzer {}", env!("REV")),
}
Ok(())
}
fn setup_logging() -> Result<()> {
std::env::set_var("RUST_BACKTRACE", "short");
env_logger::try_init_from_env("RA_LOG")?;
ra_prof::init();
Ok(())
}
fn run_proc_macro_srv() -> Result<()> {
ra_proc_macro_srv::cli::run()?;
Ok(())
}
fn run_server() -> Result<()> {
log::info!("lifecycle: server started");
let (connection, io_threads) = Connection::stdio();
let (initialize_id, initialize_params) = connection.initialize_start()?;
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 mut config = Config::default();
if let Some(value) = &initialize_params.initialization_options {
config.update(value);
}
config.update_caps(&initialize_params.capabilities);
let cwd = std::env::current_dir()?;
config.root_path =
initialize_params.root_uri.and_then(|it| it.to_file_path().ok()).unwrap_or(cwd);
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())
.collect::<Vec<_>>()
})
.filter(|workspaces| !workspaces.is_empty())
.unwrap_or_else(|| vec![config.root_path.clone()]);
config.linked_projects = ProjectManifest::discover_all(&workspace_roots)
.into_iter()
.map(LinkedProject::from)
.collect();
}
config
};
rust_analyzer::main_loop(config, connection)?;
log::info!("shutting down IO...");
io_threads.join()?;
log::info!("... IO is down");
Ok(())
}
|
