tree_sitter_java/
lib.rs

1//! This crate provides Java language support for the [tree-sitter] parsing library.
2//!
3//! The parser is generated for ABI 16, so it loads only with the [`willbooster-tree-sitter`] runtime (depend on it as
4//! `tree-sitter = { package = "willbooster-tree-sitter", version = "1.4.3" }`); upstream's `tree-sitter` crate rejects
5//! it with a `LanguageError`.
6//!
7//! Typically, you will use the [`LANGUAGE`] constant to add this language to a
8//! tree-sitter [`Parser`], and then use the parser to parse some code:
9//!
10//! ```
11//! let code = "class Main {\n    int answer() {\n        return 42;\n    }\n}\n";
12//! let mut parser = tree_sitter::Parser::new();
13//! let language = tree_sitter_java::LANGUAGE;
14//! parser
15//!     .set_language(&language.into())
16//!     .expect("Error loading Java parser");
17//! let tree = parser.parse(code, None).unwrap();
18//! assert!(!tree.root_node().has_error());
19//! ```
20//!
21//! [`Parser`]: https://docs.rs/willbooster-tree-sitter/1/tree_sitter/struct.Parser.html
22//! [tree-sitter]: https://tree-sitter.github.io/
23//! [`willbooster-tree-sitter`]: https://crates.io/crates/willbooster-tree-sitter
24
25use tree_sitter_language::LanguageFn;
26
27unsafe extern "C" {
28    fn tree_sitter_java() -> *const ();
29}
30
31/// The tree-sitter [`LanguageFn`] for this grammar.
32pub const LANGUAGE: LanguageFn = unsafe { LanguageFn::from_raw(tree_sitter_java) };
33
34/// The content of the [`node-types.json`] file for this grammar.
35///
36/// [`node-types.json`]: https://tree-sitter.github.io/tree-sitter/using-parsers/6-static-node-types
37pub const NODE_TYPES: &str = include_str!("../../src/node-types.json");
38
39#[cfg(test)]
40mod tests {
41    #[test]
42    fn test_can_load_grammar() {
43        let mut parser = tree_sitter::Parser::new();
44        parser
45            .set_language(&super::LANGUAGE.into())
46            .expect("Error loading Java parser");
47    }
48}
tree_sitter_java/lib.rs

tree_sitter_java/
lib.rs
