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extern crate failure;
extern crate itertools;
extern crate teraron;
use std::{
path::{Path, PathBuf},
process::{Command, Stdio},
};
use failure::bail;
use itertools::Itertools;
pub use teraron::{Mode, Overwrite, Verify};
pub type Result<T> = ::std::result::Result<T, failure::Error>;
pub const GRAMMAR: &str = "crates/ra_syntax/src/grammar.ron";
pub const SYNTAX_KINDS: &str = "crates/ra_syntax/src/syntax_kinds/generated.rs.tera";
pub const AST: &str = "crates/ra_syntax/src/ast/generated.rs.tera";
const TOOLCHAIN: &str = "beta-2018-11-19";
#[derive(Debug)]
pub struct Test {
pub name: String,
pub text: String,
}
pub fn collect_tests(s: &str) -> Vec<(usize, Test)> {
let mut res = vec![];
let prefix = "// ";
let comment_blocks = s
.lines()
.map(str::trim_left)
.enumerate()
.group_by(|(_idx, line)| line.starts_with(prefix));
'outer: for (is_comment, block) in comment_blocks.into_iter() {
if !is_comment {
continue;
}
let mut block = block.map(|(idx, line)| (idx, &line[prefix.len()..]));
let (start_line, name) = loop {
match block.next() {
Some((idx, line)) if line.starts_with("test ") => {
break (idx, line["test ".len()..].to_string())
}
Some(_) => (),
None => continue 'outer,
}
};
let text: String = itertools::join(
block.map(|(_, line)| line).chain(::std::iter::once("")),
"\n",
);
assert!(!text.trim().is_empty() && text.ends_with('\n'));
res.push((start_line, Test { name, text }))
}
res
}
pub fn generate(mode: Mode) -> Result<()> {
let grammar = project_root().join(GRAMMAR);
let syntax_kinds = project_root().join(SYNTAX_KINDS);
let ast = project_root().join(AST);
teraron::generate(&syntax_kinds, &grammar, mode)?;
teraron::generate(&ast, &grammar, mode)?;
Ok(())
}
pub fn project_root() -> PathBuf {
Path::new(&std::env::var("CARGO_MANIFEST_DIR").unwrap())
.ancestors()
.nth(2)
.unwrap()
.to_path_buf()
}
pub fn run(cmdline: &str, dir: &str) -> Result<()> {
eprintln!("\nwill run: {}", cmdline);
let project_dir = project_root().join(dir);
let mut args = cmdline.split_whitespace();
let exec = args.next().unwrap();
let status = Command::new(exec)
.args(args)
.current_dir(project_dir)
.status()?;
if !status.success() {
bail!("`{}` exited with {}", cmdline, status);
}
Ok(())
}
pub fn run_rustfmt(mode: Mode) -> Result<()> {
match Command::new("rustup")
.args(&["run", TOOLCHAIN, "--", "cargo", "fmt", "--version"])
.stderr(Stdio::null())
.stdout(Stdio::null())
.status()
{
Ok(status) if status.success() => (),
_ => install_rustfmt()?,
};
if mode == Verify {
run(
&format!("rustup run {} -- cargo fmt -- --check", TOOLCHAIN),
".",
)?;
} else {
run(&format!("rustup run {} -- cargo fmt", TOOLCHAIN), ".")?;
}
Ok(())
}
fn install_rustfmt() -> Result<()> {
run(&format!("rustup install {}", TOOLCHAIN), ".")?;
run(
&format!(
"rustup component add rustfmt-preview --toolchain {}",
TOOLCHAIN
),
".",
)
}
|
