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//! FIXME: write short doc here
mod analysis_stats;
mod analysis_bench;
mod help;
use std::{error::Error, fmt::Write, io::Read};
use flexi_logger::Logger;
use pico_args::Arguments;
use ra_ide_api::{file_structure, Analysis};
use ra_prof::profile;
use ra_syntax::{AstNode, SourceFile};
type Result<T> = std::result::Result<T, Box<dyn Error + Send + Sync>>;
#[derive(Clone, Copy)]
pub enum Verbosity {
Verbose,
Normal,
Quiet,
}
impl Verbosity {
fn is_verbose(&self) -> bool {
match self {
Verbosity::Verbose => true,
_ => false,
}
}
}
fn main() -> Result<()> {
Logger::with_env_or_str("error").start()?;
let subcommand = match std::env::args_os().nth(1) {
None => {
eprintln!("{}", help::GLOBAL_HELP);
return Ok(());
}
Some(s) => s,
};
let mut matches = Arguments::from_vec(std::env::args_os().skip(2).collect());
match &*subcommand.to_string_lossy() {
"parse" => {
if matches.contains(["-h", "--help"]) {
eprintln!("{}", help::PARSE_HELP);
return Ok(());
}
let no_dump = matches.contains("--no-dump");
matches.finish().or_else(handle_extra_flags)?;
let _p = profile("parsing");
let file = file()?;
if !no_dump {
println!("{:#?}", file.syntax());
}
std::mem::forget(file);
}
"symbols" => {
if matches.contains(["-h", "--help"]) {
eprintln!("{}", help::SYMBOLS_HELP);
return Ok(());
}
matches.finish().or_else(handle_extra_flags)?;
let file = file()?;
for s in file_structure(&file) {
println!("{:?}", s);
}
}
"highlight" => {
if matches.contains(["-h", "--help"]) {
eprintln!("{}", help::HIGHLIGHT_HELP);
return Ok(());
}
let rainbow_opt = matches.contains(["-r", "--rainbow"]);
matches.finish().or_else(handle_extra_flags)?;
let (analysis, file_id) = Analysis::from_single_file(read_stdin()?);
let html = analysis.highlight_as_html(file_id, rainbow_opt).unwrap();
println!("{}", html);
}
"analysis-stats" => {
if matches.contains(["-h", "--help"]) {
eprintln!("{}", help::ANALYSIS_STATS_HELP);
return Ok(());
}
let verbosity = match (
matches.contains(["-v", "--verbose"]),
matches.contains(["-q", "--quiet"]),
) {
(false, false) => Verbosity::Normal,
(false, true) => Verbosity::Quiet,
(true, false) => Verbosity::Verbose,
(true, true) => Err("Invalid flags: -q conflicts with -v")?,
};
let memory_usage = matches.contains("--memory-usage");
let only: Option<String> = matches.opt_value_from_str(["-o", "--only"])?;
let path = {
let mut trailing = matches.free()?;
if trailing.len() != 1 {
eprintln!("{}", help::ANALYSIS_STATS_HELP);
Err("Invalid flags")?;
}
trailing.pop().unwrap()
};
analysis_stats::run(
verbosity,
memory_usage,
path.as_ref(),
only.as_ref().map(String::as_ref),
)?;
}
"analysis-bench" => {
if matches.contains(["-h", "--help"]) {
eprintln!("{}", help::ANALYSIS_BENCH_HELP);
return Ok(());
}
let verbose = matches.contains(["-v", "--verbose"]);
let path: String = matches.opt_value_from_str("--path")?.unwrap_or_default();
let highlight_path = matches.opt_value_from_str("--highlight")?;
let complete_path = matches.opt_value_from_str("--complete")?;
if highlight_path.is_some() && complete_path.is_some() {
panic!("either --highlight or --complete must be set, not both")
}
let op = if let Some(path) = highlight_path {
let path: String = path;
analysis_bench::Op::Highlight { path: path.into() }
} else if let Some(path_line_col) = complete_path {
let path_line_col: String = path_line_col;
let (path_line, column) = rsplit_at_char(path_line_col.as_str(), ':')?;
let (path, line) = rsplit_at_char(path_line, ':')?;
analysis_bench::Op::Complete {
path: path.into(),
line: line.parse()?,
column: column.parse()?,
}
} else {
panic!("either --highlight or --complete must be set")
};
matches.finish().or_else(handle_extra_flags)?;
analysis_bench::run(verbose, path.as_ref(), op)?;
}
_ => eprintln!("{}", help::GLOBAL_HELP),
}
Ok(())
}
fn handle_extra_flags(e: pico_args::Error) -> Result<()> {
if let pico_args::Error::UnusedArgsLeft(flags) = e {
let mut invalid_flags = String::new();
for flag in flags {
write!(&mut invalid_flags, "{}, ", flag)?;
}
let (invalid_flags, _) = invalid_flags.split_at(invalid_flags.len() - 2);
Err(format!("Invalid flags: {}", invalid_flags).into())
} else {
Err(e.to_string().into())
}
}
fn file() -> Result<SourceFile> {
let text = read_stdin()?;
Ok(SourceFile::parse(&text).tree())
}
fn read_stdin() -> Result<String> {
let mut buff = String::new();
std::io::stdin().read_to_string(&mut buff)?;
Ok(buff)
}
fn rsplit_at_char(s: &str, c: char) -> Result<(&str, &str)> {
let idx = s.rfind(':').ok_or_else(|| format!("no `{}` in {}", c, s))?;
Ok((&s[..idx], &s[idx + 1..]))
}
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