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migrate grammar fetching/building code into helix-loader crate

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This is a rather large refactor that moves most of the code for
loading, fetching, and building grammars into a new helix-loader
module. This works well with the [[grammars]] syntax for
languages.toml defined earlier: we only have to depend on the types
for GrammarConfiguration in helix-loader and can leave all the
[[language]] entries for helix-core.
This commit is contained in:
Michael Davis 2022-02-16 07:57:20 -06:00 • committed by Blaž Hrastnik
parent 08ee949dcb
commit 4fc991fdec
23 changed files with 419 additions and 374 deletions
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19
Cargo.lock generated
View file

@ -358,12 +358,11 @@ dependencies = [
name = "helix-core" name = "helix-core"
version = "0.6.0" version = "0.6.0"
dependencies = [ dependencies = [
"anyhow",
"arc-swap", "arc-swap",
"chrono", "chrono",
"encoding_rs", "encoding_rs",
"etcetera", "etcetera",
"libloading", "helix-loader",
"log", "log",
"once_cell", "once_cell",
"quickcheck", "quickcheck",
@ -397,6 +396,21 @@ dependencies = [
"which", "which",
] ]
[[package]]
name = "helix-loader"
version = "0.6.0"
dependencies = [
"anyhow",
"cc",
"etcetera",
"libloading",
"once_cell",
"serde",
"threadpool",
"toml",
"tree-sitter",
]
[[package]] [[package]]
name = "helix-lsp" name = "helix-lsp"
version = "0.6.0" version = "0.6.0"
@ -432,6 +446,7 @@ dependencies = [
"grep-searcher", "grep-searcher",
"helix-core", "helix-core",
"helix-dap", "helix-dap",
"helix-loader",
"helix-lsp", "helix-lsp",
"helix-tui", "helix-tui",
"helix-view", "helix-view",

1
Cargo.toml
View file

@ -6,6 +6,7 @@ members = [
"helix-tui", "helix-tui",
"helix-lsp", "helix-lsp",
"helix-dap", "helix-dap",
"helix-loader",
"xtask", "xtask",
] ]

10
book/src/guides/adding_languages.md
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@ -51,16 +51,16 @@ Grammar configuration takes these keys:
| Key | Description | | Key | Description |
| --- | ----------- | | --- | ----------- |
| `name` | The name of the tree-sitter grammar | | `name` | The name of the tree-sitter grammar |
| `path` | A path within the grammar directory which should be built. Some grammar repositories host multiple grammars (for example `tree-sitter-typescript` and `tree-sitter-ocaml`) in subdirectories. This key is used to point `hx --build-grammars` to the correct path for compilation. When ommitted, the root of the grammar directory is used |
| `source` | The method of fetching the grammar - a table with a schema defined below | | `source` | The method of fetching the grammar - a table with a schema defined below |
Where `source` is a table with either these keys when using a grammar from a Where `source` is a table with either these keys when using a grammar from a
git repository: git repository:
| Key | Description | | Key | Description |
| --- | ----------- | | --- | ----------- |
| `git` | A git remote URL from which the grammar should be cloned | | `git` | A git remote URL from which the grammar should be cloned |
| `rev` | The revision (commit hash or tag) which should be fetched | | `rev` | The revision (commit hash or tag) which should be fetched |
| `subpath` | A path within the grammar directory which should be built. Some grammar repositories host multiple grammars (for example `tree-sitter-typescript` and `tree-sitter-ocaml`) in subdirectories. This key is used to point `hx --build-grammars` to the correct path for compilation. When omitted, the root of repository is used |
Or a `path` key with an absolute path to a locally available grammar directory. Or a `path` key with an absolute path to a locally available grammar directory.

16
docs/architecture.md
View file

@ -1,11 +1,13 @@
| Crate | Description | | Crate | Description |
| ----------- | ----------- | | ----------- | ----------- |
| helix-core | Core editing primitives, functional. | | helix-core | Core editing primitives, functional. |
| helix-lsp | Language server client | | helix-lsp | Language server client |
| helix-view | UI abstractions for use in backends, imperative shell. | | helix-dap | Debug Adapter Protocol (DAP) client |
| helix-term | Terminal UI | | helix-loader | Functions for building, fetching, and loading external resources |
| helix-tui | TUI primitives, forked from tui-rs, inspired by Cursive | | helix-view | UI abstractions for use in backends, imperative shell. |
| helix-term | Terminal UI |
| helix-tui | TUI primitives, forked from tui-rs, inspired by Cursive |
This document contains a high-level overview of Helix internals. This document contains a high-level overview of Helix internals.

6
helix-core/Cargo.toml
View file

@ -13,6 +13,8 @@ include = ["src/**/*", "README.md"]
[features] [features]
[dependencies] [dependencies]
helix-loader = { version = "0.6", path = "../helix-loader" }
ropey = "1.3" ropey = "1.3"
smallvec = "1.8" smallvec = "1.8"
smartstring = "1.0.0" smartstring = "1.0.0"
@ -33,13 +35,11 @@ toml = "0.5"
similar = "2.1" similar = "2.1"
etcetera = "0.3"
encoding_rs = "0.8" encoding_rs = "0.8"
chrono = { version = "0.4", default-features = false, features = ["alloc", "std"] } chrono = { version = "0.4", default-features = false, features = ["alloc", "std"] }
libloading = "0.7" etcetera = "0.3"
anyhow = "1"
[dev-dependencies] [dev-dependencies]
quickcheck = { version = "1", default-features = false } quickcheck = { version = "1", default-features = false }

27
helix-core/src/config.rs
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@ -1,33 +1,10 @@
use crate::merge_toml_values;
/// Default bultin-in languages.toml.
pub fn default_lang_config() -> toml::Value {
toml::from_slice(include_bytes!("../../languages.toml"))
.expect("Could not parse bultin-in languages.toml to valid toml")
}
/// User configured languages.toml file, merged with the default config.
pub fn user_lang_config() -> Result<toml::Value, toml::de::Error> {
let def_lang_conf = default_lang_config();
let data = std::fs::read(crate::config_dir().join("languages.toml"));
let user_lang_conf = match data {
Ok(raw) => {
let value = toml::from_slice(&raw)?;
merge_toml_values(def_lang_conf, value)
}
Err(_) => def_lang_conf,
};
Ok(user_lang_conf)
}
/// Syntax configuration loader based on built-in languages.toml. /// Syntax configuration loader based on built-in languages.toml.
pub fn default_syntax_loader() -> crate::syntax::Configuration { pub fn default_syntax_loader() -> crate::syntax::Configuration {
default_lang_config() helix_loader::default_lang_config()
.try_into() .try_into()
.expect("Could not serialize built-in languages.toml") .expect("Could not serialize built-in languages.toml")
} }
/// Syntax configuration loader based on user configured languages.toml. /// Syntax configuration loader based on user configured languages.toml.
pub fn user_syntax_loader() -> Result<crate::syntax::Configuration, toml::de::Error> { pub fn user_syntax_loader() -> Result<crate::syntax::Configuration, toml::de::Error> {
user_lang_config()?.try_into() helix_loader::user_lang_config()?.try_into()
} }

2
helix-core/src/indent.rs
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@ -444,8 +444,6 @@ where
debugger: None, debugger: None,
auto_pairs: None, auto_pairs: None,
}], }],
grammar: vec![],
grammar_selection: None,
}); });
// set runtime path so we can find the queries // set runtime path so we can find the queries

141
helix-core/src/lib.rs
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@ -33,9 +33,6 @@ pub mod unicode {
pub use unicode_width as width; pub use unicode_width as width;
} }
static RUNTIME_DIR: once_cell::sync::Lazy<std::path::PathBuf> =
once_cell::sync::Lazy::new(runtime_dir);
pub fn find_first_non_whitespace_char(line: RopeSlice) -> Option<usize> { pub fn find_first_non_whitespace_char(line: RopeSlice) -> Option<usize> {
line.chars().position(|ch| !ch.is_whitespace()) line.chars().position(|ch| !ch.is_whitespace())
} }
@ -85,144 +82,6 @@ pub fn find_root(root: Option<&str>, root_markers: &[String]) -> Option<std::pat
} }
} }
pub fn runtime_dir() -> std::path::PathBuf {
if let Ok(dir) = std::env::var("HELIX_RUNTIME") {
return dir.into();
}
const RT_DIR: &str = "runtime";
let conf_dir = config_dir().join(RT_DIR);
if conf_dir.exists() {
return conf_dir;
}
if let Ok(dir) = std::env::var("CARGO_MANIFEST_DIR") {
// this is the directory of the crate being run by cargo, we need the workspace path so we take the parent
return std::path::PathBuf::from(dir).parent().unwrap().join(RT_DIR);
}
// fallback to location of the executable being run
std::env::current_exe()
.ok()
.and_then(|path| path.parent().map(|path| path.to_path_buf().join(RT_DIR)))
.unwrap()
}
pub fn config_dir() -> std::path::PathBuf {
// TODO: allow env var override
let strategy = choose_base_strategy().expect("Unable to find the config directory!");
let mut path = strategy.config_dir();
path.push("helix");
path
}
pub fn cache_dir() -> std::path::PathBuf {
// TODO: allow env var override
let strategy = choose_base_strategy().expect("Unable to find the config directory!");
let mut path = strategy.cache_dir();
path.push("helix");
path
}
pub fn config_file() -> std::path::PathBuf {
config_dir().join("config.toml")
}
pub fn lang_config_file() -> std::path::PathBuf {
config_dir().join("languages.toml")
}
pub fn log_file() -> std::path::PathBuf {
cache_dir().join("helix.log")
}
// right overrides left
pub fn merge_toml_values(left: toml::Value, right: toml::Value) -> toml::Value {
use toml::Value;
fn get_name(v: &Value) -> Option<&str> {
v.get("name").and_then(Value::as_str)
}
match (left, right) {
(Value::Array(mut left_items), Value::Array(right_items)) => {
left_items.reserve(right_items.len());
for rvalue in right_items {
let lvalue = get_name(&rvalue)
.and_then(|rname| left_items.iter().position(|v| get_name(v) == Some(rname)))
.map(|lpos| left_items.remove(lpos));
let mvalue = match lvalue {
Some(lvalue) => merge_toml_values(lvalue, rvalue),
None => rvalue,
};
left_items.push(mvalue);
}
Value::Array(left_items)
}
(Value::Table(mut left_map), Value::Table(right_map)) => {
for (rname, rvalue) in right_map {
match left_map.remove(&rname) {
Some(lvalue) => {
let merged_value = merge_toml_values(lvalue, rvalue);
left_map.insert(rname, merged_value);
}
None => {
left_map.insert(rname, rvalue);
}
}
}
Value::Table(left_map)
}
// Catch everything else we didn't handle, and use the right value
(_, value) => value,
}
}
#[cfg(test)]
mod merge_toml_tests {
use super::merge_toml_values;
#[test]
fn language_tomls() {
use toml::Value;
const USER: &str = "
[[language]]
name = \"nix\"
test = \"bbb\"
indent = { tab-width = 4, unit = \" \", test = \"aaa\" }
";
let base: Value = toml::from_slice(include_bytes!("../../languages.toml"))
.expect("Couldn't parse built-in languages config");
let user: Value = toml::from_str(USER).unwrap();
let merged = merge_toml_values(base, user);
let languages = merged.get("language").unwrap().as_array().unwrap();
let nix = languages
.iter()
.find(|v| v.get("name").unwrap().as_str().unwrap() == "nix")
.unwrap();
let nix_indent = nix.get("indent").unwrap();
// We changed tab-width and unit in indent so check them if they are the new values
assert_eq!(
nix_indent.get("tab-width").unwrap().as_integer().unwrap(),
4
);
assert_eq!(nix_indent.get("unit").unwrap().as_str().unwrap(), " ");
// We added a new keys, so check them
assert_eq!(nix.get("test").unwrap().as_str().unwrap(), "bbb");
assert_eq!(nix_indent.get("test").unwrap().as_str().unwrap(), "aaa");
// We didn't change comment-token so it should be same
assert_eq!(nix.get("comment-token").unwrap().as_str().unwrap(), "#");
}
}
pub use etcetera::home_dir;
use etcetera::base_strategy::{choose_base_strategy, BaseStrategy};
pub use ropey::{Rope, RopeBuilder, RopeSlice}; pub use ropey::{Rope, RopeBuilder, RopeSlice};
// pub use tendril::StrTendril as Tendril; // pub use tendril::StrTendril as Tendril;

5
helix-core/src/path.rs
View file

@ -1,9 +1,10 @@
use etcetera::home_dir;
use std::path::{Component, Path, PathBuf}; use std::path::{Component, Path, PathBuf};
/// Replaces users home directory from `path` with tilde `~` if the directory /// Replaces users home directory from `path` with tilde `~` if the directory
/// is available, otherwise returns the path unchanged. /// is available, otherwise returns the path unchanged.
pub fn fold_home_dir(path: &Path) -> PathBuf { pub fn fold_home_dir(path: &Path) -> PathBuf {
if let Ok(home) = super::home_dir() { if let Ok(home) = home_dir() {
if path.starts_with(&home) { if path.starts_with(&home) {
// it's ok to unwrap, the path starts with home dir // it's ok to unwrap, the path starts with home dir
return PathBuf::from("~").join(path.strip_prefix(&home).unwrap()); return PathBuf::from("~").join(path.strip_prefix(&home).unwrap());
@ -20,7 +21,7 @@ pub fn expand_tilde(path: &Path) -> PathBuf {
let mut components = path.components().peekable(); let mut components = path.components().peekable();
if let Some(Component::Normal(c)) = components.peek() { if let Some(Component::Normal(c)) = components.peek() {
if c == &"~" { if c == &"~" {
if let Ok(home) = super::home_dir() { if let Ok(home) = home_dir() {
// it's ok to unwrap, the path starts with `~` // it's ok to unwrap, the path starts with `~`
return home.join(path.strip_prefix("~").unwrap()); return home.join(path.strip_prefix("~").unwrap());
} }

91
helix-core/src/syntax.rs
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@ -7,10 +7,6 @@ use crate::{
Rope, RopeSlice, Tendril, Rope, RopeSlice, Tendril,
}; };
use anyhow::{Context, Result};
use libloading::{Library, Symbol};
use tree_sitter::Language;
use arc_swap::{ArcSwap, Guard}; use arc_swap::{ArcSwap, Guard};
use slotmap::{DefaultKey as LayerId, HopSlotMap}; use slotmap::{DefaultKey as LayerId, HopSlotMap};
@ -27,33 +23,7 @@ use std::{
use once_cell::sync::{Lazy, OnceCell}; use once_cell::sync::{Lazy, OnceCell};
use serde::{Deserialize, Serialize}; use serde::{Deserialize, Serialize};
#[cfg(unix)] use helix_loader::grammar::{get_language, load_runtime_file};
pub const DYLIB_EXTENSION: &str = "so";
#[cfg(windows)]
pub const DYLIB_EXTENSION: &str = "dll";
fn replace_dashes_with_underscores(name: &str) -> String {
name.replace('-', "_")
}
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);
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)
}
fn deserialize_regex<'de, D>(deserializer: D) -> Result<Option<Regex>, D::Error> fn deserialize_regex<'de, D>(deserializer: D) -> Result<Option<Regex>, D::Error>
where where
@ -81,19 +51,8 @@ where
} }
#[derive(Debug, Serialize, Deserialize)] #[derive(Debug, Serialize, Deserialize)]
#[serde(rename_all = "kebab-case", deny_unknown_fields)]
pub struct Configuration { pub struct Configuration {
#[serde(rename = "use-grammars")]
pub grammar_selection: Option<GrammarSelection>,
pub language: Vec<LanguageConfiguration>, pub language: Vec<LanguageConfiguration>,
pub grammar: Vec<GrammarConfiguration>,
}
#[derive(Debug, Serialize, Deserialize)]
#[serde(rename_all = "lowercase", untagged)]
pub enum GrammarSelection {
Only(HashSet<String>),
Except(HashSet<String>),
} }
// largely based on tree-sitter/cli/src/loader.rs // largely based on tree-sitter/cli/src/loader.rs
@ -279,29 +238,6 @@ pub struct IndentQuery {
pub outdent: HashSet<String>, pub outdent: HashSet<String>,
} }
#[derive(Debug, Serialize, Deserialize)]
pub struct GrammarConfiguration {
#[serde(rename = "name")]
pub grammar_id: String, // c-sharp, rust
pub source: GrammarSource,
pub path: Option<String>,
}
#[derive(Debug, Serialize, Deserialize)]
#[serde(rename_all = "lowercase")]
#[serde(untagged)]
pub enum GrammarSource {
Local {
path: String,
},
Git {
#[serde(rename = "git")]
remote: String,
#[serde(rename = "rev")]
revision: String,
},
}
#[derive(Debug)] #[derive(Debug)]
pub struct TextObjectQuery { pub struct TextObjectQuery {
pub query: Query, pub query: Query,
@ -398,14 +334,6 @@ impl TextObjectQuery {
} }
} }
pub fn load_runtime_file(language: &str, filename: &str) -> Result<String, std::io::Error> {
let path = crate::RUNTIME_DIR
.join("queries")
.join(language)
.join(filename);
std::fs::read_to_string(&path)
}
fn read_query(language: &str, filename: &str) -> String { fn read_query(language: &str, filename: &str) -> String {
static INHERITS_REGEX: Lazy<Regex> = static INHERITS_REGEX: Lazy<Regex> =
Lazy::new(|| Regex::new(r";+\s*inherits\s*:?\s*([a-z_,()]+)\s*").unwrap()); Lazy::new(|| Regex::new(r";+\s*inherits\s*:?\s*([a-z_,()]+)\s*").unwrap());
@ -451,12 +379,9 @@ impl LanguageConfiguration {
if highlights_query.is_empty() { if highlights_query.is_empty() {
None None
} else { } else {
let language = get_language( let language = get_language(self.grammar.as_deref().unwrap_or(&self.language_id))
&crate::RUNTIME_DIR, .map_err(|e| log::info!("{}", e))
self.grammar.as_deref().unwrap_or(&self.language_id), .ok()?;
)
.map_err(|e| log::info!("{}", e))
.ok()?;
let config = HighlightConfiguration::new( let config = HighlightConfiguration::new(
language, language,
&highlights_query, &highlights_query,
@ -2116,13 +2041,9 @@ mod test {
.map(String::from) .map(String::from)
.collect(); .collect();
let loader = Loader::new(Configuration { let loader = Loader::new(Configuration { language: vec![] });
language: vec![],
grammar: vec![],
grammar_selection: None,
});
let language = get_language(&crate::RUNTIME_DIR, "Rust").unwrap(); let language = get_language("Rust").unwrap();
let config = HighlightConfiguration::new( let config = HighlightConfiguration::new(
language, language,
&std::fs::read_to_string("../runtime/grammars/sources/rust/queries/highlights.scm") &std::fs::read_to_string("../runtime/grammars/sources/rust/queries/highlights.scm")

23
helix-loader/Cargo.toml Normal file
View file

@ -0,0 +1,23 @@
[package]
name = "helix-loader"
version = "0.6.0"
description = "A post-modern text editor."
authors = ["Blaž Hrastnik <blaz@mxxn.io>"]
edition = "2021"
license = "MPL-2.0"
categories = ["editor"]
repository = "https://github.com/helix-editor/helix"
homepage = "https://helix-editor.com"
[dependencies]
anyhow = "1"
serde = { version = "1.0", features = ["derive"] }
toml = "0.5"
etcetera = "0.3"
tree-sitter = "0.20"
libloading = "0.7"
once_cell = "1.9"
# cloning/compiling tree-sitter grammars
cc = { version = "1" }
threadpool = { version = "1.0" }

6
helix-loader/build.rs Normal file
View file

@ -0,0 +1,6 @@
fn main() {
println!(
"cargo:rustc-env=BUILD_TARGET={}",
std::env::var("TARGET").unwrap()
);
}

230
helix-term/src/grammars.rs → helix-loader/src/grammar.rs
View file

@ -1,63 +1,155 @@
use anyhow::{anyhow, Context, Result}; use anyhow::{anyhow, Context, Result};
use libloading::{Library, Symbol};
use serde::{Deserialize, Serialize};
use std::fs; use std::fs;
use std::time::SystemTime; use std::time::SystemTime;
use std::{ use std::{
collections::HashSet,
path::{Path, PathBuf}, path::{Path, PathBuf},
process::Command, process::Command,
sync::mpsc::channel, sync::mpsc::channel,
}; };
use tree_sitter::Language;
use helix_core::syntax::{GrammarConfiguration, GrammarSelection, GrammarSource, DYLIB_EXTENSION}; #[cfg(unix)]
const DYLIB_EXTENSION: &str = "so";
#[cfg(windows)]
const DYLIB_EXTENSION: &str = "dll";
#[derive(Debug, Serialize, Deserialize)]
struct Configuration {
#[serde(rename = "use-grammars")]
pub grammar_selection: Option<GrammarSelection>,
pub grammar: Vec<GrammarConfiguration>,
}
#[derive(Debug, Serialize, Deserialize)]
#[serde(rename_all = "lowercase", untagged)]
pub enum GrammarSelection {
Only(HashSet<String>),
Except(HashSet<String>),
}
#[derive(Debug, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct GrammarConfiguration {
#[serde(rename = "name")]
pub grammar_id: String,
pub source: GrammarSource,
}
#[derive(Debug, Serialize, Deserialize)]
#[serde(rename_all = "lowercase", untagged)]
pub enum GrammarSource {
Local {
path: String,
},
Git {
#[serde(rename = "git")]
remote: String,
#[serde(rename = "rev")]
revision: String,
subpath: Option<String>,
},
}
const BUILD_TARGET: &str = env!("BUILD_TARGET"); const BUILD_TARGET: &str = env!("BUILD_TARGET");
const REMOTE_NAME: &str = "origin"; const REMOTE_NAME: &str = "origin";
pub fn get_language(name: &str) -> Result<Language> {
let name = name.to_ascii_lowercase();
let mut library_path = crate::runtime_dir().join("grammars").join(&name);
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_{}", name.replace('-', "_"));
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)
}
pub fn fetch_grammars() -> Result<()> { pub fn fetch_grammars() -> Result<()> {
run_parallel(get_grammar_configs(), fetch_grammar, "fetch") run_parallel(get_grammar_configs()?, fetch_grammar, "fetch")
} }
pub fn build_grammars() -> Result<()> { pub fn build_grammars() -> Result<()> {
run_parallel(get_grammar_configs(), build_grammar, "build") run_parallel(get_grammar_configs()?, build_grammar, "build")
}
// Returns the set of grammar configurations the user requests.
// Grammars are configured in the default and user `languages.toml` and are
// merged. The `grammar_selection` key of the config is then used to filter
// down all grammars into a subset of the user's choosing.
fn get_grammar_configs() -> Result<Vec<GrammarConfiguration>> {
let config: Configuration = crate::user_lang_config()
.context("Could not parse languages.toml")?
.try_into()?;
let grammars = match config.grammar_selection {
Some(GrammarSelection::Only(selections)) => config
.grammar
.into_iter()
.filter(|grammar| selections.contains(&grammar.grammar_id))
.collect(),
Some(GrammarSelection::Except(rejections)) => config
.grammar
.into_iter()
.filter(|grammar| !rejections.contains(&grammar.grammar_id))
.collect(),
None => config.grammar,
};
Ok(grammars)
} }
fn run_parallel<F>(grammars: Vec<GrammarConfiguration>, job: F, action: &'static str) -> Result<()> fn run_parallel<F>(grammars: Vec<GrammarConfiguration>, job: F, action: &'static str) -> Result<()>
where where
F: Fn(GrammarConfiguration) -> Result<()> + std::marker::Send + 'static + Copy, F: Fn(GrammarConfiguration) -> Result<()> + std::marker::Send + 'static + Copy,
{ {
let mut n_jobs = 0;
let pool = threadpool::Builder::new().build(); let pool = threadpool::Builder::new().build();
let (tx, rx) = channel(); let (tx, rx) = channel();
for grammar in grammars { for grammar in grammars {
let tx = tx.clone(); let tx = tx.clone();
n_jobs += 1;
pool.execute(move || { pool.execute(move || {
let grammar_id = grammar.grammar_id.clone(); tx.send(job(grammar)).unwrap();
job(grammar).unwrap_or_else(|err| {
eprintln!("Failed to {} grammar '{}'\n{}", action, grammar_id, err)
});
// report progress
tx.send(1).unwrap();
}); });
} }
pool.join(); pool.join();
if rx.try_iter().sum::<usize>() == n_jobs { // TODO: print all failures instead of the first one found.
Ok(()) if let Some(failure) = rx.try_iter().find_map(|result| result.err()) {
Err(anyhow!(
"Failed to {} some grammar(s).\n{}",
action,
failure
))
} else { } else {
Err(anyhow!("Failed to {} some grammar(s).", action)) Ok(())
} }
} }
fn fetch_grammar(grammar: GrammarConfiguration) -> Result<()> { fn fetch_grammar(grammar: GrammarConfiguration) -> Result<()> {
if let GrammarSource::Git { remote, revision } = grammar.source { if let GrammarSource::Git {
let grammar_dir = helix_core::runtime_dir() remote, revision, ..
} = grammar.source
{
let grammar_dir = crate::runtime_dir()
.join("grammars/sources") .join("grammars/sources")
.join(grammar.grammar_id.clone()); .join(&grammar.grammar_id);
fs::create_dir_all(grammar_dir.clone()).expect("Could not create grammar directory"); fs::create_dir_all(&grammar_dir).context(format!(
"Could not create grammar directory {:?}",
grammar_dir
))?;
// create the grammar dir contains a git directory // create the grammar dir contains a git directory
if !grammar_dir.join(".git").is_dir() { if !grammar_dir.join(".git").is_dir() {
@ -65,12 +157,12 @@ fn fetch_grammar(grammar: GrammarConfiguration) -> Result<()> {
} }
// ensure the remote matches the configured remote // ensure the remote matches the configured remote
if get_remote_url(&grammar_dir).map_or(true, |s| s.trim_end() != remote) { if get_remote_url(&grammar_dir).map_or(true, |s| s != remote) {
set_remote(&grammar_dir, &remote)?; set_remote(&grammar_dir, &remote)?;
} }
// ensure the revision matches the configured revision // ensure the revision matches the configured revision
if get_revision(&grammar_dir).map_or(true, |s| s.trim_end() != revision) { if get_revision(&grammar_dir).map_or(true, |s| s != revision) {
// Fetch the exact revision from the remote. // Fetch the exact revision from the remote.
// Supported by server-side git since v2.5.0 (July 2015), // Supported by server-side git since v2.5.0 (July 2015),
// enabled by default on major git hosts. // enabled by default on major git hosts.
@ -94,33 +186,38 @@ fn fetch_grammar(grammar: GrammarConfiguration) -> Result<()> {
// Sets the remote for a repository to the given URL, creating the remote if // Sets the remote for a repository to the given URL, creating the remote if
// it does not yet exist. // it does not yet exist.
fn set_remote(repository: &Path, remote_url: &str) -> Result<String> { fn set_remote(repository_dir: &Path, remote_url: &str) -> Result<String> {
git(repository, ["remote", "set-url", REMOTE_NAME, remote_url]) git(
.or_else(|_| git(repository, ["remote", "add", REMOTE_NAME, remote_url])) repository_dir,
["remote", "set-url", REMOTE_NAME, remote_url],
)
.or_else(|_| git(repository_dir, ["remote", "add", REMOTE_NAME, remote_url]))
} }
fn get_remote_url(repository: &Path) -> Option<String> { fn get_remote_url(repository_dir: &Path) -> Option<String> {
git(repository, ["remote", "get-url", REMOTE_NAME]).ok() git(repository_dir, ["remote", "get-url", REMOTE_NAME]).ok()
} }
fn get_revision(repository: &Path) -> Option<String> { fn get_revision(repository_dir: &Path) -> Option<String> {
git(repository, ["rev-parse", "HEAD"]).ok() git(repository_dir, ["rev-parse", "HEAD"]).ok()
} }
// A wrapper around 'git' commands which returns stdout in success and a // A wrapper around 'git' commands which returns stdout in success and a
// helpful error message showing the command, stdout, and stderr in error. // helpful error message showing the command, stdout, and stderr in error.
fn git<I, S>(repository: &Path, args: I) -> Result<String> fn git<I, S>(repository_dir: &Path, args: I) -> Result<String>
where where
I: IntoIterator<Item = S>, I: IntoIterator<Item = S>,
S: AsRef<std::ffi::OsStr>, S: AsRef<std::ffi::OsStr>,
{ {
let output = Command::new("git") let output = Command::new("git")
.args(args) .args(args)
.current_dir(repository) .current_dir(repository_dir)
.output()?; .output()?;
if output.status.success() { if output.status.success() {
Ok(String::from_utf8_lossy(&output.stdout).into_owned()) Ok(String::from_utf8_lossy(&output.stdout)
.trim_end()
.to_owned())
} else { } else {
// TODO: figure out how to display the git command using `args` // TODO: figure out how to display the git command using `args`
Err(anyhow!( Err(anyhow!(
@ -132,52 +229,37 @@ where
} }
fn build_grammar(grammar: GrammarConfiguration) -> Result<()> { fn build_grammar(grammar: GrammarConfiguration) -> Result<()> {
let grammar_dir = if let GrammarSource::Local { ref path } = grammar.source { println!("{:#?}", grammar);
PathBuf::from(path) let grammar_dir = if let GrammarSource::Local { path } = &grammar.source {
PathBuf::from(&path)
} else { } else {
helix_core::runtime_dir() crate::runtime_dir()
.join("grammars/sources") .join("grammars/sources")
.join(grammar.grammar_id.clone()) .join(&grammar.grammar_id)
}; };
grammar_dir.read_dir().with_context(|| { let grammar_dir_entries = grammar_dir.read_dir().with_context(|| {
format!( format!("Failed to read directory {grammar_dir:?}. Did you use 'hx --fetch-grammars'?")
"The directory {:?} is empty, you probably need to use 'hx --fetch-grammars'?",
grammar_dir
)
})?; })?;
let path = match grammar.path { if grammar_dir_entries.count() == 0 {
Some(ref subpath) => grammar_dir.join(subpath), return Err(anyhow!(
None => grammar_dir, "Directory {grammar_dir:?} is empty. Did you use 'hx --fetch-grammars'?"
));
};
let path = match &grammar.source {
GrammarSource::Git {
subpath: Some(subpath),
..
} => grammar_dir.join(subpath),
_ => grammar_dir,
} }
.join("src"); .join("src");
build_tree_sitter_library(&path, grammar) build_tree_sitter_library(&path, grammar)
} }
// Returns the set of grammar configurations the user requests.
// Grammars are configured in the default and user `languages.toml` and are
// merged. The `grammar_selection` key of the config is then used to filter
// down all grammars into a subset of the user's choosing.
fn get_grammar_configs() -> Vec<GrammarConfiguration> {
let config = helix_core::config::user_syntax_loader().expect("Could not parse languages.toml");
match config.grammar_selection {
Some(GrammarSelection::Only(selections)) => config
.grammar
.into_iter()
.filter(|grammar| selections.contains(&grammar.grammar_id))
.collect(),
Some(GrammarSelection::Except(rejections)) => config
.grammar
.into_iter()
.filter(|grammar| !rejections.contains(&grammar.grammar_id))
.collect(),
None => config.grammar,
}
}
fn build_tree_sitter_library(src_path: &Path, grammar: GrammarConfiguration) -> Result<()> { fn build_tree_sitter_library(src_path: &Path, grammar: GrammarConfiguration) -> Result<()> {
let header_path = src_path; let header_path = src_path;
let parser_path = src_path.join("parser.c"); let parser_path = src_path.join("parser.c");
@ -193,8 +275,8 @@ fn build_tree_sitter_library(src_path: &Path, grammar: GrammarConfiguration) ->
None None
} }
}; };
let parser_lib_path = helix_core::runtime_dir().join("../runtime/grammars"); let parser_lib_path = crate::runtime_dir().join("grammars");
let mut library_path = parser_lib_path.join(grammar.grammar_id.clone()); let mut library_path = parser_lib_path.join(&grammar.grammar_id);
library_path.set_extension(DYLIB_EXTENSION); library_path.set_extension(DYLIB_EXTENSION);
let recompile = needs_recompile(&library_path, &parser_path, &scanner_path) let recompile = needs_recompile(&library_path, &parser_path, &scanner_path)
@ -210,7 +292,7 @@ fn build_tree_sitter_library(src_path: &Path, grammar: GrammarConfiguration) ->
let mut config = cc::Build::new(); let mut config = cc::Build::new();
config config
.cpp(true) .cpp(true)
.opt_level(2) .opt_level(3)
.cargo_metadata(false) .cargo_metadata(false)
.host(BUILD_TARGET) .host(BUILD_TARGET)
.target(BUILD_TARGET); .target(BUILD_TARGET);
@ -245,7 +327,7 @@ fn build_tree_sitter_library(src_path: &Path, grammar: GrammarConfiguration) ->
.arg(header_path) .arg(header_path)
.arg("-o") .arg("-o")
.arg(&library_path) .arg(&library_path)
.arg("-O2"); .arg("-O3");
if let Some(scanner_path) = scanner_path.as_ref() { if let Some(scanner_path) = scanner_path.as_ref() {
if scanner_path.extension() == Some("c".as_ref()) { if scanner_path.extension() == Some("c".as_ref()) {
command.arg("-xc").arg("-std=c99").arg(scanner_path); command.arg("-xc").arg("-std=c99").arg(scanner_path);
@ -294,3 +376,13 @@ fn needs_recompile(
fn mtime(path: &Path) -> Result<SystemTime> { fn mtime(path: &Path) -> Result<SystemTime> {
Ok(fs::metadata(path)?.modified()?) Ok(fs::metadata(path)?.modified()?)
} }
/// Gives the contents of a file from a language's `runtime/queries/<lang>`
/// directory
pub fn load_runtime_file(language: &str, filename: &str) -> Result<String, std::io::Error> {
let path = crate::RUNTIME_DIR
.join("queries")
.join(language)
.join(filename);
std::fs::read_to_string(&path)
}

161
helix-loader/src/lib.rs Normal file
View file

@ -0,0 +1,161 @@
pub mod grammar;
use etcetera::base_strategy::{choose_base_strategy, BaseStrategy};
pub static RUNTIME_DIR: once_cell::sync::Lazy<std::path::PathBuf> =
once_cell::sync::Lazy::new(runtime_dir);
pub fn runtime_dir() -> std::path::PathBuf {
if let Ok(dir) = std::env::var("HELIX_RUNTIME") {
return dir.into();
}
const RT_DIR: &str = "runtime";
let conf_dir = config_dir().join(RT_DIR);
if conf_dir.exists() {
return conf_dir;
}
if let Ok(dir) = std::env::var("CARGO_MANIFEST_DIR") {
// this is the directory of the crate being run by cargo, we need the workspace path so we take the parent
return std::path::PathBuf::from(dir).parent().unwrap().join(RT_DIR);
}
// fallback to location of the executable being run
std::env::current_exe()
.ok()
.and_then(|path| path.parent().map(|path| path.to_path_buf().join(RT_DIR)))
.unwrap()
}
pub fn config_dir() -> std::path::PathBuf {
// TODO: allow env var override
let strategy = choose_base_strategy().expect("Unable to find the config directory!");
let mut path = strategy.config_dir();
path.push("helix");
path
}
pub fn cache_dir() -> std::path::PathBuf {
// TODO: allow env var override
let strategy = choose_base_strategy().expect("Unable to find the config directory!");
let mut path = strategy.cache_dir();
path.push("helix");
path
}
pub fn config_file() -> std::path::PathBuf {
config_dir().join("config.toml")
}
pub fn lang_config_file() -> std::path::PathBuf {
config_dir().join("languages.toml")
}
pub fn log_file() -> std::path::PathBuf {
cache_dir().join("helix.log")
}
/// Default bultin-in languages.toml.
pub fn default_lang_config() -> toml::Value {
toml::from_slice(include_bytes!("../../languages.toml"))
.expect("Could not parse bultin-in languages.toml to valid toml")
}
/// User configured languages.toml file, merged with the default config.
pub fn user_lang_config() -> Result<toml::Value, toml::de::Error> {
let def_lang_conf = default_lang_config();
let data = std::fs::read(crate::config_dir().join("languages.toml"));
let user_lang_conf = match data {
Ok(raw) => {
let value = toml::from_slice(&raw)?;
merge_toml_values(def_lang_conf, value)
}
Err(_) => def_lang_conf,
};
Ok(user_lang_conf)
}
// right overrides left
pub fn merge_toml_values(left: toml::Value, right: toml::Value) -> toml::Value {
use toml::Value;
fn get_name(v: &Value) -> Option<&str> {
v.get("name").and_then(Value::as_str)
}
match (left, right) {
(Value::Array(mut left_items), Value::Array(right_items)) => {
left_items.reserve(right_items.len());
for rvalue in right_items {
let lvalue = get_name(&rvalue)
.and_then(|rname| left_items.iter().position(|v| get_name(v) == Some(rname)))
.map(|lpos| left_items.remove(lpos));
let mvalue = match lvalue {
Some(lvalue) => merge_toml_values(lvalue, rvalue),
None => rvalue,
};
left_items.push(mvalue);
}
Value::Array(left_items)
}
(Value::Table(mut left_map), Value::Table(right_map)) => {
for (rname, rvalue) in right_map {
match left_map.remove(&rname) {
Some(lvalue) => {
let merged_value = merge_toml_values(lvalue, rvalue);
left_map.insert(rname, merged_value);
}
None => {
left_map.insert(rname, rvalue);
}
}
}
Value::Table(left_map)
}
// Catch everything else we didn't handle, and use the right value
(_, value) => value,
}
}
#[cfg(test)]
mod merge_toml_tests {
use super::merge_toml_values;
#[test]
fn language_tomls() {
use toml::Value;
const USER: &str = "
[[language]]
name = \"nix\"
test = \"bbb\"
indent = { tab-width = 4, unit = \" \", test = \"aaa\" }
";
let base: Value = toml::from_slice(include_bytes!("../../languages.toml"))
.expect("Couldn't parse built-in languages config");
let user: Value = toml::from_str(USER).unwrap();
let merged = merge_toml_values(base, user);
let languages = merged.get("language").unwrap().as_array().unwrap();
let nix = languages
.iter()
.find(|v| v.get("name").unwrap().as_str().unwrap() == "nix")
.unwrap();
let nix_indent = nix.get("indent").unwrap();
// We changed tab-width and unit in indent so check them if they are the new values
assert_eq!(
nix_indent.get("tab-width").unwrap().as_integer().unwrap(),
4
);
assert_eq!(nix_indent.get("unit").unwrap().as_str().unwrap(), " ");
// We added a new keys, so check them
assert_eq!(nix.get("test").unwrap().as_str().unwrap(), "bbb");
assert_eq!(nix_indent.get("test").unwrap().as_str().unwrap(), "aaa");
// We didn't change comment-token so it should be same
assert_eq!(nix.get("comment-token").unwrap().as_str().unwrap(), "#");
}
}

1
helix-term/Cargo.toml
View file

@ -26,6 +26,7 @@ helix-core = { version = "0.6", path = "../helix-core" }
helix-view = { version = "0.6", path = "../helix-view" } helix-view = { version = "0.6", path = "../helix-view" }
helix-lsp = { version = "0.6", path = "../helix-lsp" } helix-lsp = { version = "0.6", path = "../helix-lsp" }
helix-dap = { version = "0.6", path = "../helix-dap" } helix-dap = { version = "0.6", path = "../helix-dap" }
helix-loader = { version = "0.6", path = "../helix-loader" }
anyhow = "1" anyhow = "1"
once_cell = "1.10" once_cell = "1.10"

5
helix-term/build.rs
View file

@ -14,10 +14,5 @@ fn main() {
None => env!("CARGO_PKG_VERSION").into(), None => env!("CARGO_PKG_VERSION").into(),
}; };
println!(
"cargo:rustc-env=BUILD_TARGET={}",
std::env::var("TARGET").unwrap()
);
println!("cargo:rustc-env=VERSION_AND_GIT_HASH={}", version); println!("cargo:rustc-env=VERSION_AND_GIT_HASH={}", version);
} }

6
helix-term/src/application.rs
View file

@ -61,10 +61,10 @@ impl Application {
let mut compositor = Compositor::new()?; let mut compositor = Compositor::new()?;
let size = compositor.size(); let size = compositor.size();
let conf_dir = helix_core::config_dir(); let conf_dir = helix_loader::config_dir();
let theme_loader = let theme_loader =
std::sync::Arc::new(theme::Loader::new(&conf_dir, &helix_core::runtime_dir())); std::sync::Arc::new(theme::Loader::new(&conf_dir, &helix_loader::runtime_dir()));
let true_color = config.editor.true_color || crate::true_color(); let true_color = config.editor.true_color || crate::true_color();
let theme = config let theme = config
@ -109,7 +109,7 @@ impl Application {
compositor.push(editor_view); compositor.push(editor_view);
if args.load_tutor { if args.load_tutor {
let path = helix_core::runtime_dir().join("tutor.txt"); let path = helix_loader::runtime_dir().join("tutor.txt");
editor.open(path, Action::VerticalSplit)?; editor.open(path, Action::VerticalSplit)?;
// Unset path to prevent accidentally saving to the original tutor file. // Unset path to prevent accidentally saving to the original tutor file.
doc_mut!(editor).set_path(None)?; doc_mut!(editor).set_path(None)?;

2
helix-term/src/commands/typed.rs
View file

@ -828,7 +828,7 @@ fn tutor(
_args: &[Cow<str>], _args: &[Cow<str>],
_event: PromptEvent, _event: PromptEvent,
) -> anyhow::Result<()> { ) -> anyhow::Result<()> {
let path = helix_core::runtime_dir().join("tutor.txt"); let path = helix_loader::runtime_dir().join("tutor.txt");
cx.editor.open(path, Action::Replace)?; cx.editor.open(path, Action::Replace)?;
// Unset path to prevent accidentally saving to the original tutor file. // Unset path to prevent accidentally saving to the original tutor file.
doc_mut!(cx.editor).set_path(None)?; doc_mut!(cx.editor).set_path(None)?;

14
helix-term/src/health.rs
View file

@ -1,8 +1,6 @@
use crossterm::style::{Color, Print, Stylize}; use crossterm::style::{Color, Print, Stylize};
use helix_core::{ use helix_core::config::{default_syntax_loader, user_syntax_loader};
config::{default_syntax_loader, user_syntax_loader}, use helix_loader::grammar::load_runtime_file;
syntax::load_runtime_file,
};
#[derive(Copy, Clone)] #[derive(Copy, Clone)]
pub enum TsFeature { pub enum TsFeature {
@ -43,10 +41,10 @@ impl TsFeature {
/// Display general diagnostics. /// Display general diagnostics.
pub fn general() { pub fn general() {
let config_file = helix_core::config_file(); let config_file = helix_loader::config_file();
let lang_file = helix_core::lang_config_file(); let lang_file = helix_loader::lang_config_file();
let log_file = helix_core::log_file(); let log_file = helix_loader::log_file();
let rt_dir = helix_core::runtime_dir(); let rt_dir = helix_loader::runtime_dir();
if config_file.exists() { if config_file.exists() {
println!("Config file: {}", config_file.display()); println!("Config file: {}", config_file.display());

1
helix-term/src/lib.rs
View file

@ -7,7 +7,6 @@ pub mod commands;
pub mod compositor; pub mod compositor;
pub mod config; pub mod config;
pub mod health; pub mod health;
pub mod grammars;
pub mod job; pub mod job;
pub mod keymap; pub mod keymap;
pub mod ui; pub mod ui;

10
helix-term/src/main.rs
View file

@ -40,7 +40,7 @@ fn main() -> Result<()> {
#[tokio::main] #[tokio::main]
async fn main_impl() -> Result<i32> { async fn main_impl() -> Result<i32> {
let logpath = helix_core::log_file(); let logpath = helix_loader::log_file();
let parent = logpath.parent().unwrap(); let parent = logpath.parent().unwrap();
if !parent.exists() { if !parent.exists() {
std::fs::create_dir_all(parent).ok(); std::fs::create_dir_all(parent).ok();
@ -105,21 +105,21 @@ FLAGS:
} }
if args.fetch_grammars { if args.fetch_grammars {
helix_term::grammars::fetch_grammars()?; helix_loader::grammar::fetch_grammars()?;
return Ok(0); return Ok(0);
} }
if args.build_grammars { if args.build_grammars {
helix_term::grammars::build_grammars()?; helix_loader::grammar::build_grammars()?;
return Ok(0); return Ok(0);
} }
let conf_dir = helix_core::config_dir(); let conf_dir = helix_loader::config_dir();
if !conf_dir.exists() { if !conf_dir.exists() {
std::fs::create_dir_all(&conf_dir).ok(); std::fs::create_dir_all(&conf_dir).ok();
} }
let config = match std::fs::read_to_string(helix_core::config_file()) { let config = match std::fs::read_to_string(helix_loader::config_file()) {
Ok(config) => toml::from_str(&config) Ok(config) => toml::from_str(&config)
.map(merge_keys) .map(merge_keys)
.unwrap_or_else(|err| { .unwrap_or_else(|err| {

4
helix-term/src/ui/mod.rs
View file

@ -218,9 +218,9 @@ pub mod completers {
} }
pub fn theme(_editor: &Editor, input: &str) -> Vec<Completion> { pub fn theme(_editor: &Editor, input: &str) -> Vec<Completion> {
let mut names = theme::Loader::read_names(&helix_core::runtime_dir().join("themes")); let mut names = theme::Loader::read_names(&helix_loader::runtime_dir().join("themes"));
names.extend(theme::Loader::read_names( names.extend(theme::Loader::read_names(
&helix_core::config_dir().join("themes"), &helix_loader::config_dir().join("themes"),
)); ));
names.push("default".into()); names.push("default".into());
names.push("base16_default".into()); names.push("base16_default".into());

12
languages.toml
View file

@ -302,8 +302,7 @@ indent = { tab-width = 2, unit = " " }
[[grammar]] [[grammar]]
name = "typescript" name = "typescript"
source = { git = "https://github.com/tree-sitter/tree-sitter-typescript", rev = "3e897ea5925f037cfae2e551f8e6b12eec2a201a" } source = { git = "https://github.com/tree-sitter/tree-sitter-typescript", rev = "3e897ea5925f037cfae2e551f8e6b12eec2a201a", subpath = "typescript" }
path = "typescript"
[[language]] [[language]]
name = "tsx" name = "tsx"
@ -317,8 +316,7 @@ indent = { tab-width = 2, unit = " " }
[[grammar]] [[grammar]]
name = "tsx" name = "tsx"
source = { git = "https://github.com/tree-sitter/tree-sitter-typescript", rev = "3e897ea5925f037cfae2e551f8e6b12eec2a201a" } source = { git = "https://github.com/tree-sitter/tree-sitter-typescript", rev = "3e897ea5925f037cfae2e551f8e6b12eec2a201a", subpath = "tsx" }
path = "tsx"
[[language]] [[language]]
name = "css" name = "css"
@ -522,8 +520,7 @@ indent = { tab-width = 2, unit = " " }
[[grammar]] [[grammar]]
name = "ocaml" name = "ocaml"
source = { git = "https://github.com/tree-sitter/tree-sitter-ocaml", rev = "23d419ba45789c5a47d31448061557716b02750a" } source = { git = "https://github.com/tree-sitter/tree-sitter-ocaml", rev = "23d419ba45789c5a47d31448061557716b02750a", subpath = "ocaml" }
path = "ocaml"
[[language]] [[language]]
name = "ocaml-interface" name = "ocaml-interface"
@ -536,8 +533,7 @@ indent = { tab-width = 2, unit = " "}
[[grammar]] [[grammar]]
name = "ocaml-interface" name = "ocaml-interface"
source = { git = "https://github.com/tree-sitter/tree-sitter-ocaml", rev = "23d419ba45789c5a47d31448061557716b02750a" } source = { git = "https://github.com/tree-sitter/tree-sitter-ocaml", rev = "23d419ba45789c5a47d31448061557716b02750a", subpath = "interface" }
path = "interface"
[[language]] [[language]]
name = "lua" name = "lua"