experimental_tree_sitter_swift/
lib.rs

1//! This crate provides swift language support for the [tree-sitter][] parsing library.
2//!
3//! Typically, you will use the [language][language func] function to add this language to a
4//! tree-sitter [Parser][], and then use the parser to parse some code:
5//!
6//! ```
7//! let code = "";
8//! let mut parser = tree_sitter::Parser::new();
9//! parser.set_language(experimental_tree_sitter_swift::language()).expect("Error loading swift grammar");
10//! let tree = parser.parse(code, None).unwrap();
11//! ```
12//!
13//! [Language]: https://docs.rs/tree-sitter/*/tree_sitter/struct.Language.html
14//! [language func]: fn.language.html
15//! [Parser]: https://docs.rs/tree-sitter/*/tree_sitter/struct.Parser.html
16//! [tree-sitter]: https://tree-sitter.github.io/
17
18use tree_sitter::Language;
19
20extern "C" {
21    fn tree_sitter_swift() -> Language;
22}
23
24/// Get the tree-sitter [Language][] for this grammar.
25///
26/// [Language]: https://docs.rs/tree-sitter/*/tree_sitter/struct.Language.html
27pub fn language() -> Language {
28    unsafe { tree_sitter_swift() }
29}
30
31/// The content of the [`node-types.json`][] file for this grammar.
32///
33/// [`node-types.json`]: https://tree-sitter.github.io/tree-sitter/using-parsers#static-node-types
34pub const NODE_TYPES: &'static str = include_str!("../../src/node-types.json");
35
36// Uncomment these to include any queries that this grammar contains
37
38// pub const HIGHLIGHTS_QUERY: &'static str = include_str!("../../queries/highlights.scm");
39// pub const INJECTIONS_QUERY: &'static str = include_str!("../../queries/injections.scm");
40// pub const LOCALS_QUERY: &'static str = include_str!("../../queries/locals.scm");
41// pub const TAGS_QUERY: &'static str = include_str!("../../queries/tags.scm");
42
43#[cfg(test)]
44mod tests {
45    use anyhow::{anyhow, Result};
46
47    #[test]
48    fn test_can_load_grammar() -> Result<()> {
49        let mut parser = tree_sitter::Parser::new();
50        parser.set_language(super::language())?;
51
52        Ok(())
53    }
54
55    #[test]
56    fn test_can_parse_basic_file() -> Result<()> {
57        let mut parser = tree_sitter::Parser::new();
58        parser.set_language(super::language())?;
59
60        let tree = parser.parse("_ = \"Hello!\"\n", None)
61            .ok_or_else(|| anyhow!("Unable to parse!"))?;
62
63        assert_eq!(
64            "(source_file (assignment target: (directly_assignable_expression (simple_identifier)) result: (line_string_literal text: (line_str_text))))",
65            tree.root_node().to_sexp(),
66        );
67
68        Ok(())
69    }
70}
experimental_tree_sitter_swift/lib.rs

experimental_tree_sitter_swift/
lib.rs
