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> { 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, ) -> Result { 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 { 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::(), n_jobs); build_dir("tree-sitter-typescript/tsx", "tsx"); build_dir("tree-sitter-typescript/typescript", "typescript"); }