Dynamically load grammar libraries at runtime

This commit is contained in:
Blaž Hrastnik 2021-07-11 19:36:45 +09:00
parent dd5e8082e4
commit dd2903ff10
8 changed files with 203 additions and 168 deletions

1
.gitignore vendored
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@ -3,3 +3,4 @@ target
helix-term/rustfmt.toml
helix-syntax/languages/
result
runtime/grammars

25
Cargo.lock generated
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@ -61,9 +61,6 @@ name = "cc"
version = "1.0.69"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e70cc2f62c6ce1868963827bd677764c62d07c3d9a3e1fb1177ee1a9ab199eb2"
dependencies = [
"jobserver",
]
[[package]]
name = "cfg-if"
@ -354,8 +351,9 @@ dependencies = [
name = "helix-syntax"
version = "0.3.0"
dependencies = [
"anyhow",
"cc",
"serde",
"libloading",
"threadpool",
"tree-sitter",
]
@ -475,15 +473,6 @@ version = "0.4.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "dd25036021b0de88a0aff6b850051563c6516d0bf53f8638938edbb9de732736"
[[package]]
name = "jobserver"
version = "0.1.22"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "972f5ae5d1cb9c6ae417789196c803205313edde988685da5e3aae0827b9e7fd"
dependencies = [
"libc",
]
[[package]]
name = "jsonrpc-core"
version = "17.1.0"
@ -509,6 +498,16 @@ version = "0.2.97"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "12b8adadd720df158f4d70dfe7ccc6adb0472d7c55ca83445f6a5ab3e36f8fb6"
[[package]]
name = "libloading"
version = "0.7.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6f84d96438c15fcd6c3f244c8fce01d1e2b9c6b5623e9c711dc9286d8fc92d6a"
dependencies = [
"cfg-if 1.0.0",
"winapi",
]
[[package]]
name = "lock_api"
version = "0.4.4"

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@ -253,14 +253,14 @@ pub fn change<I>(document: &Document, changes: I) -> Self
let doc = Rope::from(doc);
use crate::syntax::{
Configuration, IndentationConfiguration, Lang, LanguageConfiguration, Loader,
Configuration, IndentationConfiguration, LanguageConfiguration, Loader,
};
use once_cell::sync::OnceCell;
let loader = Loader::new(Configuration {
language: vec![LanguageConfiguration {
scope: "source.rust".to_string(),
file_types: vec!["rs".to_string()],
language_id: Lang::Rust,
language_id: "Rust".to_string(),
highlight_config: OnceCell::new(),
//
roots: vec![],

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@ -5,7 +5,7 @@
Rope, RopeSlice, Tendril,
};
pub use helix_syntax::{get_language, get_language_name, Lang};
pub use helix_syntax::get_language;
use arc_swap::ArcSwap;
@ -31,7 +31,7 @@ pub struct Configuration {
#[serde(rename_all = "kebab-case")]
pub struct LanguageConfiguration {
#[serde(rename = "name")]
pub(crate) language_id: Lang,
pub(crate) language_id: String,
pub scope: String, // source.rust
pub file_types: Vec<String>, // filename ends_with? <Gemfile, rb, etc>
pub roots: Vec<String>, // these indicate project roots <.git, Cargo.toml>
@ -153,7 +153,7 @@ fn read_query(language: &str, filename: &str) -> String {
impl LanguageConfiguration {
fn initialize_highlight(&self, scopes: &[String]) -> Option<Arc<HighlightConfiguration>> {
let language = get_language_name(self.language_id).to_ascii_lowercase();
let language = self.language_id.to_ascii_lowercase();
let highlights_query = read_query(&language, "highlights.scm");
// always highlight syntax errors
@ -166,7 +166,7 @@ fn initialize_highlight(&self, scopes: &[String]) -> Option<Arc<HighlightConfigu
if highlights_query.is_empty() {
None
} else {
let language = get_language(self.language_id);
let language = get_language(&crate::RUNTIME_DIR, &self.language_id).ok()?;
let config = HighlightConfiguration::new(
language,
&highlights_query,
@ -198,7 +198,7 @@ pub fn is_highlight_initialized(&self) -> bool {
pub fn indent_query(&self) -> Option<&IndentQuery> {
self.indent_query
.get_or_init(|| {
let language = get_language_name(self.language_id).to_ascii_lowercase();
let language = self.language_id.to_ascii_lowercase();
let toml = load_runtime_file(&language, "indents.toml").ok()?;
toml::from_slice(toml.as_bytes()).ok()
@ -1802,7 +1802,7 @@ fn test_parser() {
.map(String::from)
.collect();
let language = get_language(Lang::Rust);
let language = get_language(&crate::RUNTIME_DIR, "Rust").unwrap();
let config = HighlightConfiguration::new(
language,
&std::fs::read_to_string(

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@ -12,8 +12,10 @@ include = ["src/**/*", "languages/**/*", "build.rs", "!**/docs/**/*", "!**/test/
[dependencies]
tree-sitter = "0.19"
serde = { version = "1.0", features = ["derive"] }
libloading = "0.7"
anyhow = "1"
[build-dependencies]
cc = { version = "1", features = ["parallel"] }
cc = { version = "1" }
threadpool = { version = "1.0" }
anyhow = "1"

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@ -1,5 +1,7 @@
use anyhow::Result;
use std::fs;
use std::path::PathBuf;
use std::time::SystemTime;
use std::sync::mpsc::channel;
@ -15,66 +17,156 @@ fn collect_tree_sitter_dirs(ignore: &[String]) -> Vec<String> {
dirs
}
fn collect_src_files(dir: &str) -> (Vec<String>, Vec<String>) {
eprintln!("Collect files for {}", dir);
#[cfg(unix)]
const DYLIB_EXTENSION: &str = "so";
let mut c_files = Vec::new();
let mut cpp_files = Vec::new();
let path = PathBuf::from("languages").join(&dir).join("src");
for entry in fs::read_dir(path).unwrap().flatten() {
let path = entry.path();
if path
.file_stem()
.unwrap()
.to_str()
.unwrap()
.starts_with("binding")
{
continue;
}
if let Some(ext) = path.extension() {
if ext == "c" {
c_files.push(path.to_str().unwrap().to_string());
} else if ext == "cc" || ext == "cpp" || ext == "cxx" {
cpp_files.push(path.to_str().unwrap().to_string());
}
}
}
(c_files, cpp_files)
}
#[cfg(windows)]
const DYLIB_EXTENSION: &str = "dll";
fn build_c(files: Vec<String>, language: &str) {
let mut build = cc::Build::new();
for file in files {
build
.file(&file)
.include(PathBuf::from(file).parent().unwrap())
.pic(true)
.warnings(false);
}
build.compile(&format!("tree-sitter-{}-c", language));
}
// const BUILD_TARGET: &'static str = env!("BUILD_TARGET");
fn build_cpp(files: Vec<String>, language: &str) {
let mut build = cc::Build::new();
use anyhow::{anyhow, Context};
use std::{path::Path, process::Command};
let flag = if build.get_compiler().is_like_msvc() {
"/std:c++17"
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 {
"-std=c++14"
};
for file in files {
build
.file(&file)
.include(PathBuf::from(file).parent().unwrap())
.pic(true)
.warnings(false)
.cpp(true)
.flag_if_supported(flag);
scanner_path.set_extension("cc");
if scanner_path.exists() {
Some(scanner_path)
} else {
None
}
build.compile(&format!("tree-sitter-{}-cpp", language));
};
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);
// .target(BUILD_TARGET)
// .host(BUILD_TARGET);
let compiler = config.get_compiler();
let mut command = Command::new(compiler.path());
for (key, value) in compiler.env() {
command.env(key, value);
}
if cfg!(windows) {
command
.args(&["/nologo", "/LD", "/I"])
.arg(header_path)
.arg("/Od")
.arg(parser_path);
if let Some(scanner_path) = scanner_path.as_ref() {
command.arg(scanner_path);
}
command
.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_c(files: Vec<String>, language: &str) {
// let mut build = cc::Build::new();
// for file in files {
// build
// .file(&file)
// .include(PathBuf::from(file).parent().unwrap())
// .pic(true)
// .warnings(false);
// }
// build.compile(&format!("tree-sitter-{}-c", language));
// }
// fn build_cpp(files: Vec<String>, language: &str) {
// let mut build = cc::Build::new();
// let flag = if build.get_compiler().is_like_msvc() {
// "/std:c++17"
// } else {
// "-std=c++14"
// };
// for file in files {
// build
// .file(&file)
// .include(PathBuf::from(file).parent().unwrap())
// .pic(true)
// .warnings(false)
// .cpp(true)
// .flag_if_supported(flag);
// }
// build.compile(&format!("tree-sitter-{}-cpp", language));
// }
fn build_dir(dir: &str, language: &str) {
println!("Build language {}", language);
@ -92,13 +184,9 @@ fn build_dir(dir: &str, language: &str) {
eprintln!("You can fix in using 'git submodule init && git submodule update --recursive'.");
std::process::exit(1);
}
let (c, cpp) = collect_src_files(dir);
if !c.is_empty() {
build_c(c, language);
}
if !cpp.is_empty() {
build_cpp(cpp, language);
}
let path = Path::new("languages").join(dir).join("src");
build_library(&path, language).unwrap();
}
fn main() {
@ -129,6 +217,6 @@ fn main() {
// 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");
// build_dir("tree-sitter-typescript/tsx", "tsx");
// build_dir("tree-sitter-typescript/typescript", "typescript");
}

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@ -1,94 +1,39 @@
use serde::{Deserialize, Serialize};
use anyhow::{Context, Result};
use libloading::{Library, Symbol};
use tree_sitter::Language;
#[macro_export]
macro_rules! mk_extern {
( $( $name:ident ),* ) => {
$(
extern "C" { pub fn $name() -> Language; }
)*
};
fn replace_dashes_with_underscores(name: &str) -> String {
let mut result = String::with_capacity(name.len());
for c in name.chars() {
if c == '-' {
result.push('_');
} else {
result.push(c);
}
}
result
}
#[cfg(unix)]
const DYLIB_EXTENSION: &str = "so";
#[macro_export]
macro_rules! mk_enum {
( $( $camel:ident ),* ) => {
#[derive(Clone, Copy, Debug, PartialEq, Serialize, Deserialize)]
#[serde(rename_all = "lowercase")]
pub enum Lang {
$(
$camel,
)*
}
#[cfg(windows)]
const DYLIB_EXTENSION: &str = "dll";
pub fn get_language(runtime_path: &std::path::Path, name: &str) -> Result<Language> {
let name = name.to_ascii_lowercase();
let mut library_path = runtime_path.join("grammars").join(&name);
// TODO: duplicated under build
library_path.set_extension(DYLIB_EXTENSION);
let library = unsafe { Library::new(&library_path) }
.with_context(|| format!("Error opening dynamic library {:?}", &library_path))?;
let language_fn_name = format!("tree_sitter_{}", replace_dashes_with_underscores(&name));
let language = unsafe {
let language_fn: Symbol<unsafe extern "C" fn() -> Language> = library
.get(language_fn_name.as_bytes())
.with_context(|| format!("Failed to load symbol {}", language_fn_name))?;
language_fn()
};
std::mem::forget(library);
Ok(language)
}
#[macro_export]
macro_rules! mk_get_language {
( $( ($camel:ident, $name:ident) ),* ) => {
#[must_use]
pub fn get_language(lang: Lang) -> Language {
unsafe {
match lang {
$(
Lang::$camel => $name(),
)*
}
}
}
};
}
#[macro_export]
macro_rules! mk_get_language_name {
( $( $camel:ident ),* ) => {
#[must_use]
pub const fn get_language_name(lang: Lang) -> &'static str {
match lang {
$(
Lang::$camel => stringify!($camel),
)*
}
}
};
}
#[macro_export]
macro_rules! mk_langs {
( $( ($camel:ident, $name:ident) ),* ) => {
mk_extern!($( $name ),*);
mk_enum!($( $camel ),*);
mk_get_language!($( ($camel, $name) ),*);
mk_get_language_name!($( $camel ),*);
};
}
mk_langs!(
// 1) Name for enum
// 2) tree-sitter function to call to get a Language
(Agda, tree_sitter_agda),
(Bash, tree_sitter_bash),
(Cpp, tree_sitter_cpp),
(CSharp, tree_sitter_c_sharp),
(Css, tree_sitter_css),
(C, tree_sitter_c),
(Elixir, tree_sitter_elixir),
(Go, tree_sitter_go),
// (Haskell, tree_sitter_haskell),
(Html, tree_sitter_html),
(Javascript, tree_sitter_javascript),
(Java, tree_sitter_java),
(Json, tree_sitter_json),
(Julia, tree_sitter_julia),
(Latex, tree_sitter_latex),
(Nix, tree_sitter_nix),
(Php, tree_sitter_php),
(Python, tree_sitter_python),
(Ruby, tree_sitter_ruby),
(Rust, tree_sitter_rust),
(Scala, tree_sitter_scala),
(Swift, tree_sitter_swift),
(Toml, tree_sitter_toml),
(Tsx, tree_sitter_tsx),
(Typescript, tree_sitter_typescript)
);

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