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use anyhow::{anyhow, Context, Result};
use std::fs;
use std::time::SystemTime;
use std::{
path::{Path, PathBuf},
process::Command,
};
use std::sync::mpsc::channel;
fn collect_tree_sitter_dirs(ignore: &[String]) -> Result<Vec<String>> {
let mut dirs = Vec::new();
let path = PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("languages");
for entry in fs::read_dir(path)? {
let entry = entry?;
let path = entry.path();
if !entry.file_type()?.is_dir() {
continue;
}
let dir = path.file_name().unwrap().to_str().unwrap().to_string();
// filter ignores
if ignore.contains(&dir) {
continue;
}
dirs.push(dir)
}
Ok(dirs)
}
#[cfg(unix)]
const DYLIB_EXTENSION: &str = "so";
#[cfg(windows)]
const DYLIB_EXTENSION: &str = "dll";
fn build_library(src_path: &Path, language: &str) -> Result<()> {
let header_path = src_path;
// let grammar_path = src_path.join("grammar.json");
let parser_path = src_path.join("parser.c");
let mut scanner_path = src_path.join("scanner.c");
let scanner_path = if scanner_path.exists() {
Some(scanner_path)
} else {
scanner_path.set_extension("cc");
if scanner_path.exists() {
Some(scanner_path)
} else {
None
}
};
let parser_lib_path = PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("../runtime/grammars");
let mut library_path = parser_lib_path.join(language);
library_path.set_extension(DYLIB_EXTENSION);
let recompile = needs_recompile(&library_path, &parser_path, &scanner_path)
.with_context(|| "Failed to compare source and binary timestamps")?;
if !recompile {
return Ok(());
}
let mut config = cc::Build::new();
config.cpp(true).opt_level(2).cargo_metadata(false);
let compiler = config.get_compiler();
let mut command = Command::new(compiler.path());
command.current_dir(src_path);
for (key, value) in compiler.env() {
command.env(key, value);
}
if cfg!(windows) {
command
.args(&["/nologo", "/LD", "/I"])
.arg(header_path)
.arg("/Od");
if let Some(scanner_path) = scanner_path.as_ref() {
command.arg(scanner_path);
}
command
.arg(parser_path)
.arg("/link")
.arg(format!("/out:{}", library_path.to_str().unwrap()));
} else {
command
.arg("-shared")
.arg("-fPIC")
.arg("-fno-exceptions")
.arg("-g")
.arg("-I")
.arg(header_path)
.arg("-o")
.arg(&library_path)
.arg("-O2");
if let Some(scanner_path) = scanner_path.as_ref() {
if scanner_path.extension() == Some("c".as_ref()) {
command.arg("-xc").arg("-std=c99").arg(scanner_path);
} else {
command.arg(scanner_path);
}
}
command.arg("-xc").arg(parser_path);
}
let output = command
.output()
.with_context(|| "Failed to execute C compiler")?;
if !output.status.success() {
return Err(anyhow!(
"Parser compilation failed.\nStdout: {}\nStderr: {}",
String::from_utf8_lossy(&output.stdout),
String::from_utf8_lossy(&output.stderr)
));
}
Ok(())
}
fn needs_recompile(
lib_path: &Path,
parser_c_path: &Path,
scanner_path: &Option<PathBuf>,
) -> Result<bool> {
if !lib_path.exists() {
return Ok(true);
}
let lib_mtime = mtime(lib_path)?;
if mtime(parser_c_path)? > lib_mtime {
return Ok(true);
}
if let Some(scanner_path) = scanner_path {
if mtime(scanner_path)? > lib_mtime {
return Ok(true);
}
}
Ok(false)
}
fn mtime(path: &Path) -> Result<SystemTime> {
Ok(fs::metadata(path)?.modified()?)
}
fn build_dir(dir: &str, language: &str) {
println!("Build language {}", language);
if PathBuf::from("languages")
.join(dir)
.read_dir()
.unwrap()
.next()
.is_none()
{
eprintln!(
"The directory {} is empty, did you use 'git clone --recursive'?",
dir
);
eprintln!("You can fix in using 'git submodule init && git submodule update --recursive'.");
std::process::exit(1);
}
let path = PathBuf::from(env!("CARGO_MANIFEST_DIR"))
.join("languages")
.join(dir)
.join("src");
build_library(&path, language).unwrap();
}
fn main() {
let ignore = vec![
"tree-sitter-typescript".to_string(),
"tree-sitter-haskell".to_string(), // aarch64 failures: https://github.com/tree-sitter/tree-sitter-haskell/issues/34
];
let dirs = collect_tree_sitter_dirs(&ignore).unwrap();
let mut n_jobs = 0;
let pool = threadpool::Builder::new().build(); // by going through the builder, it'll use num_cpus
let (tx, rx) = channel();
for dir in dirs {
let tx = tx.clone();
n_jobs += 1;
pool.execute(move || {
let language = &dir.strip_prefix("tree-sitter-").unwrap();
build_dir(&dir, language);
// report progress
tx.send(1).unwrap();
});
}
pool.join();
// drop(tx);
assert_eq!(rx.try_iter().sum::<usize>(), n_jobs);
build_dir("tree-sitter-typescript/tsx", "tsx");
build_dir("tree-sitter-typescript/typescript", "typescript");
}
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