harper_tree_sitter_dart/
lib.rs

1//! This crate provides Dart language support for the [tree-sitter][] parsing library.
2//!
3//! Typically, you will use the [LANGUAGE][] constant to add this language to a
4//! tree-sitter [Parser][], and then use the parser to parse some code:
5//!
6//! ```
7//! use tree_sitter::Parser;
8//!
9//! let code = r#"
10//! class Test {
11//!     int double(int x) {
12//!         return x * 2;
13//!     }
14//! }
15//! "#;
16//! let mut parser = Parser::new();
17//! let language = harper_tree_sitter_dart::LANGUAGE;
18//! parser
19//!     .set_language(&language.into())
20//!     .expect("Error loading Dart parser");
21//! let tree = parser.parse(code, None).unwrap();
22//! assert!(!tree.root_node().has_error());
23//! ```
24//!
25//! [Parser]: https://docs.rs/tree-sitter/*/tree_sitter/struct.Parser.html
26//! [tree-sitter]: https://tree-sitter.github.io/
27
28use tree_sitter_language::LanguageFn;
29
30extern "C" {
31    fn tree_sitter_dart() -> *const ();
32}
33
34/// The tree-sitter [`LanguageFn`][LanguageFn] for this grammar.
35///
36/// [LanguageFn]: https://docs.rs/tree-sitter-language/*/tree_sitter_language/struct.LanguageFn.html
37pub const LANGUAGE: LanguageFn = unsafe { LanguageFn::from_raw(tree_sitter_dart) };
38
39/// The content of the [`node-types.json`][] file for this grammar.
40///
41/// [`node-types.json`]: https://tree-sitter.github.io/tree-sitter/using-parsers#static-node-types
42pub const NODE_TYPES: &str = include_str!("../grammar-src/node-types.json");
43
44#[cfg(test)]
45mod tests {
46    #[test]
47    fn test_can_load_grammar() {
48        let mut parser = tree_sitter::Parser::new();
49        parser
50            .set_language(&super::LANGUAGE.into())
51            .expect("Error loading Dart parser");
52    }
53}
harper_tree_sitter_dart/lib.rs

harper_tree_sitter_dart/
lib.rs
