69 lines
2.1 KiB
Rust
69 lines
2.1 KiB
Rust
|
extern crate clap;
|
||
|
|
#[macro_use]
|
||
|
|
extern crate failure;
|
||
|
|
extern crate libsyntax2;
|
||
|
|
extern crate tools;
|
||
|
|
|
||
|
|
use std::{fs, path::Path, io::Read};
|
||
|
|
use clap::{App, Arg, SubCommand};
|
||
|
|
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 file = libsyntax2::parse(text);
|
||
|
|
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(|t| {
|
||
|
|
t.start_line <= line && line <= t.start_line + t.text.lines().count()
|
||
|
|
});
|
||
|
|
let test = match test {
|
||
|
|
None => bail!("No test found at line {} at {}", line, file.display()),
|
||
|
|
Some(test) => test,
|
||
|
|
};
|
||
|
|
let file = libsyntax2::parse(test.text.clone());
|
||
|
|
let tree = libsyntax2::utils::dump_tree(&file);
|
||
|
|
Ok((test.text, tree))
|
||
|
|
}
|