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//! This crate provides Just language support for the [tree-sitter][] parsing library. | ||
//! This crate provides just language support for the [tree-sitter][] parsing library. | ||
//! | ||
//! Typically, you will use the [language][language func] function to add this language to a | ||
//! tree-sitter [Parser][], and then use the parser to parse some code: | ||
//! | ||
//! ``` | ||
//! let code = r#" | ||
//! "#; | ||
//! let code = ""; | ||
//! let mut parser = tree_sitter::Parser::new(); | ||
//! let language = tree_sitter_just::LANGUAGE; | ||
//! parser | ||
//! .set_language(&language.into()) | ||
//! .expect("Error loading Just parser"); | ||
//! parser.set_language(tree_sitter_just::language()).expect("Error loading just grammar"); | ||
//! let tree = parser.parse(code, None).unwrap(); | ||
//! assert!(!tree.root_node().has_error()); | ||
//! ``` | ||
//! | ||
//! [Language]: https://docs.rs/tree-sitter/*/tree_sitter/struct.Language.html | ||
//! [language func]: fn.language.html | ||
//! [Parser]: https://docs.rs/tree-sitter/*/tree_sitter/struct.Parser.html | ||
//! [tree-sitter]: https://tree-sitter.github.io/ | ||
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use tree_sitter_language::LanguageFn; | ||
use tree_sitter::Language; | ||
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extern "C" { | ||
fn tree_sitter_just() -> *const (); | ||
fn tree_sitter_just() -> Language; | ||
} | ||
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/// The tree-sitter [`LanguageFn`] for this grammar. | ||
pub const LANGUAGE: LanguageFn = unsafe { LanguageFn::from_raw(tree_sitter_just) }; | ||
/// Get the tree-sitter [Language][] for this grammar. | ||
/// | ||
/// [Language]: https://docs.rs/tree-sitter/*/tree_sitter/struct.Language.html | ||
pub fn language() -> Language { | ||
unsafe { tree_sitter_just() } | ||
} | ||
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/// The content of the [`node-types.json`][] file for this grammar. | ||
/// | ||
/// [`node-types.json`]: https://tree-sitter.github.io/tree-sitter/using-parsers#static-node-types | ||
pub const NODE_TYPES: &str = include_str!("../../src/node-types.json"); | ||
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// NOTE: uncomment these to include any queries that this grammar contains: | ||
pub const HIGHLIGHTS_QUERY: &str = include_str!("../../queries-flavored/helix/highlights.scm"); | ||
pub const INJECTIONS_QUERY: &str = include_str!("../../queries-flavored/helix/injections.scm"); | ||
pub const LOCALS_QUERY: &str = include_str!("../../queries-flavored/helix/locals.scm"); | ||
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// pub const HIGHLIGHTS_QUERY: &str = include_str!("../../queries/highlights.scm"); | ||
// pub const INJECTIONS_QUERY: &str = include_str!("../../queries/injections.scm"); | ||
// pub const LOCALS_QUERY: &str = include_str!("../../queries/locals.scm"); | ||
// pub const TAGS_QUERY: &str = include_str!("../../queries/tags.scm"); | ||
// FIXME: add tags when available | ||
// pub const TAGS_QUERY: &'static str = include_str!("../../queries-src/tags.scm"); | ||
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#[cfg(test)] | ||
mod tests { | ||
#[test] | ||
fn test_can_load_grammar() { | ||
let mut parser = tree_sitter::Parser::new(); | ||
parser | ||
.set_language(&super::LANGUAGE.into()) | ||
.expect("Error loading Just parser"); | ||
.set_language(super::language()) | ||
.expect("Error loading just language"); | ||
} | ||
} |