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|
#[allow(unused)]
use std::{ffi::OsString, path::PathBuf};
#[derive(Debug)]
pub struct RustAnalyzer {
pub verbose: u32,
pub subcommand: RustAnalyzerCmd,
}
#[derive(Debug)]
pub enum RustAnalyzerCmd {
Server(Server),
AnalysisStats(AnalysisStats),
}
#[derive(Debug)]
pub struct Server {
pub dir: Option<PathBuf>,
pub subcommand: ServerCmd,
}
#[derive(Debug)]
pub enum ServerCmd {
Launch(Launch),
Watch(Watch),
}
#[derive(Debug)]
pub struct Launch {
pub log: bool,
}
#[derive(Debug)]
pub struct Watch;
#[derive(Debug)]
pub struct AnalysisStats {
pub path: PathBuf,
pub parallel: bool,
}
impl RustAnalyzer {
#[allow(dead_code)]
pub fn from_env_or_exit() -> Self {
Self::from_env_or_exit_()
}
#[allow(dead_code)]
pub fn from_env() -> xflags::Result<Self> {
Self::from_env_()
}
#[allow(dead_code)]
pub fn from_vec(args: Vec<std::ffi::OsString>) -> xflags::Result<Self> {
Self::from_vec_(args)
}
}
impl RustAnalyzer {
fn from_env_or_exit_() -> Self {
Self::from_env_().unwrap_or_else(|err| err.exit())
}
fn from_env_() -> xflags::Result<Self> {
let mut p = xflags::rt::Parser::new_from_env();
Self::parse_(&mut p)
}
fn from_vec_(args: Vec<std::ffi::OsString>) -> xflags::Result<Self> {
let mut p = xflags::rt::Parser::new(args);
Self::parse_(&mut p)
}
}
impl RustAnalyzer {
fn parse_(p_: &mut xflags::rt::Parser) -> xflags::Result<Self> {
#![allow(non_snake_case, unused_mut)]
let mut verbose = Vec::new();
let mut server__dir = Vec::new();
let mut server__launch__log = Vec::new();
let mut analysis_stats__parallel = Vec::new();
let mut analysis_stats__path = (false, Vec::new());
let mut state_ = 0u8;
while let Some(arg_) = p_.pop_flag() {
match arg_ {
Ok(flag_) => match (state_, flag_.as_str()) {
(0 | 1 | 2 | 3 | 4, "--verbose" | "-v") => verbose.push(()),
(0 | 1 | 2 | 3 | 4, "--help" | "-h") => return Err(p_.help(Self::HELP_)),
(1 | 2 | 3, "--dir") => server__dir.push(p_.next_value(&flag_)?.into()),
(1, _) => {
p_.push_back(Ok(flag_));
state_ = 2;
}
(2, "--log") => server__launch__log.push(()),
(4, "--parallel") => analysis_stats__parallel.push(()),
_ => return Err(p_.unexpected_flag(&flag_)),
},
Err(arg_) => match (state_, arg_.to_str().unwrap_or("")) {
(0, "server") => state_ = 1,
(0, "analysis-stats") => state_ = 4,
(0, _) => {
return Err(p_.unexpected_arg(arg_));
}
(1, "watch") => state_ = 3,
(1, _) => {
p_.push_back(Err(arg_));
state_ = 2;
}
(4, _) => {
if let (done_ @ false, buf_) = &mut analysis_stats__path {
buf_.push(arg_.into());
*done_ = true;
continue;
}
return Err(p_.unexpected_arg(arg_));
}
_ => return Err(p_.unexpected_arg(arg_)),
},
}
}
state_ = if state_ == 1 { 2 } else { state_ };
Ok(RustAnalyzer {
verbose: verbose.len() as u32,
subcommand: match state_ {
2 | 3 => RustAnalyzerCmd::Server(Server {
dir: p_.optional("--dir", server__dir)?,
subcommand: match state_ {
2 => ServerCmd::Launch(Launch {
log: p_.optional("--log", server__launch__log)?.is_some(),
}),
3 => ServerCmd::Watch(Watch {}),
_ => return Err(p_.subcommand_required()),
},
}),
4 => RustAnalyzerCmd::AnalysisStats(AnalysisStats {
parallel: p_.optional("--parallel", analysis_stats__parallel)?.is_some(),
path: p_.required("path", analysis_stats__path.1)?,
}),
_ => return Err(p_.subcommand_required()),
},
})
}
}
impl RustAnalyzer {
const HELP_: &'static str = "\
rust-analyzer
OPTIONS:
-v, --verbose
-h, --help
Prints help information.
SUBCOMMANDS:
rust-analyzer server
OPTIONS:
--dir <path>
--log
rust-analyzer server watch
rust-analyzer analysis-stats
ARGS:
<path>
OPTIONS:
--parallel
";
}
|
