tree_sitter_lambdamoo/
lib.rs

1//! This crate provides LambdaMOO 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//! let code = r#"
8//! if (player.location == this.location)
9//!   player:tell("The room vibrates with power!");
10//! endif
11//! "#;
12//! let mut parser = tree_sitter::Parser::new();
13//! let language = tree_sitter_lambdamoo::LANGUAGE;
14//! parser
15//!     .set_language(&language.into())
16//!     .expect("Error loading LambdaMOO parser");
17//! let tree = parser.parse(code, None).unwrap();
18//! assert!(!tree.root_node().has_error());
19//! ```
20//!
21//! [Parser]: https://docs.rs/tree-sitter/*/tree_sitter/struct.Parser.html
22//! [tree-sitter]: https://tree-sitter.github.io/
23
24use tree_sitter_language::LanguageFn;
25
26unsafe extern "C" {
27    fn tree_sitter_lambdamoo() -> *const ();
28}
29
30/// Get the tree-sitter [`LanguageFn`][LanguageFn] for this grammar.
31///
32/// [LanguageFn]: https://docs.rs/tree-sitter-language/*/tree_sitter_language/struct.LanguageFn.html
33pub const LANGUAGE: LanguageFn = unsafe { LanguageFn::from_raw(tree_sitter_lambdamoo) };
34
35/// The content of the [`node-types.json`][] file for this grammar.
36///
37/// [`node-types.json`]: https://tree-sitter.github.io/tree-sitter/using-parsers#static-node-types
38pub const NODE_TYPES: &'static str = include_str!("../../src/node-types.json");
39
40// Uncomment these to include any queries that this grammar contains
41
42pub const HIGHLIGHTS_QUERY: &'static str = include_str!("../../queries/highlights.scm");
43pub const FOLDS_QUERY: &'static str = include_str!("../../queries/folds.scm");
44pub const INDENTS_QUERY: &'static str = include_str!("../../queries/indents.scm");
45pub const LOCALS_QUERY: &'static str = include_str!("../../queries/locals.scm");
46pub const TAGS_QUERY: &'static str = include_str!("../../queries/tags.scm");
47pub const ERRORS_QUERY: &'static str = include_str!("../../queries/errors.scm");
48
49#[cfg(test)]
50mod tests {
51    #[test]
52    fn test_can_load_grammar() {
53        let mut parser = tree_sitter::Parser::new();
54        parser
55            .set_language(&super::LANGUAGE.into())
56            .expect("Error loading LambdaMOO parser");
57    }
58
59    #[test]
60    fn test_errors_query_captures_invalid_identifier_only() {
61        use tree_sitter::StreamingIterator;
62
63        let language = super::LANGUAGE.into();
64        let mut parser = tree_sitter::Parser::new();
65        parser.set_language(&language).unwrap();
66        let source = "notify(if); result = E_NONE;";
67        let tree = parser.parse(source, None).unwrap();
68
69        assert!(!tree.root_node().has_error());
70
71        let query = tree_sitter::Query::new(&language, super::ERRORS_QUERY).unwrap();
72        let mut cursor = tree_sitter::QueryCursor::new();
73        let mut captures = cursor.captures(&query, tree.root_node(), source.as_bytes());
74        let capture_names = query.capture_names();
75        let mut captured = Vec::new();
76        while let Some((query_match, capture_index)) = captures.next() {
77            captured.push(capture_names[query_match.captures()[*capture_index].index as usize]);
78        }
79
80        assert_eq!(captured, ["invalid_identifier"]);
81    }
82}
tree_sitter_lambdamoo/lib.rs

tree_sitter_lambdamoo/
lib.rs
