80 lines
2.4 KiB
Rust
80 lines
2.4 KiB
Rust
extern crate clap;
|
|
#[macro_use]
|
|
extern crate failure;
|
|
extern crate libsyntax2;
|
|
extern crate tools;
|
|
|
|
use clap::{App, Arg, SubCommand};
|
|
use std::time::Instant;
|
|
use std::{fs, io::Read, path::Path};
|
|
use tools::collect_tests;
|
|
|
|
type Result<T> = ::std::result::Result<T, failure::Error>;
|
|
|
|
fn main() -> Result<()> {
|
|
let matches = App::new("libsyntax2-cli")
|
|
.setting(clap::AppSettings::SubcommandRequiredElseHelp)
|
|
.subcommand(
|
|
SubCommand::with_name("render-test")
|
|
.arg(
|
|
Arg::with_name("line")
|
|
.long("--line")
|
|
.required(true)
|
|
.takes_value(true),
|
|
)
|
|
.arg(
|
|
Arg::with_name("file")
|
|
.long("--file")
|
|
.required(true)
|
|
.takes_value(true),
|
|
),
|
|
)
|
|
.subcommand(SubCommand::with_name("parse"))
|
|
.get_matches();
|
|
match matches.subcommand() {
|
|
("parse", _) => {
|
|
let tree = parse()?;
|
|
println!("{}", tree);
|
|
}
|
|
("render-test", Some(matches)) => {
|
|
let file = matches.value_of("file").unwrap();
|
|
let file = Path::new(file);
|
|
let line: usize = matches.value_of("line").unwrap().parse()?;
|
|
let line = line - 1;
|
|
let (test, tree) = render_test(file, line)?;
|
|
println!("{}\n{}", test, tree);
|
|
}
|
|
_ => unreachable!(),
|
|
}
|
|
Ok(())
|
|
}
|
|
|
|
fn parse() -> Result<String> {
|
|
let text = read_stdin()?;
|
|
let start = Instant::now();
|
|
let file = libsyntax2::parse(&text);
|
|
eprintln!("elapsed {:?}", start.elapsed());
|
|
let tree = libsyntax2::utils::dump_tree(&file);
|
|
Ok(tree)
|
|
}
|
|
|
|
fn read_stdin() -> Result<String> {
|
|
let mut buff = String::new();
|
|
::std::io::stdin().read_to_string(&mut buff)?;
|
|
Ok(buff)
|
|
}
|
|
|
|
fn render_test(file: &Path, line: usize) -> Result<(String, String)> {
|
|
let text = fs::read_to_string(file)?;
|
|
let tests = collect_tests(&text);
|
|
let test = tests.into_iter().find(|(start_line, t)| {
|
|
*start_line <= line && line <= *start_line + t.text.lines().count()
|
|
});
|
|
let test = match test {
|
|
None => bail!("No test found at line {} at {}", line, file.display()),
|
|
Some((_start_line, test)) => test,
|
|
};
|
|
let file = libsyntax2::parse(&test.text);
|
|
let tree = libsyntax2::utils::dump_tree(&file);
|
|
Ok((test.text, tree))
|
|
}
|