tree_sitter_language/
language.rs

1#![no_std]
2/// `LanguageFn` wraps a C function that returns a pointer to a tree-sitter grammar.
3#[repr(transparent)]
4#[derive(Clone, Copy)]
5pub struct LanguageFn(unsafe extern "C" fn() -> *const ());
6
7impl LanguageFn {
8    /// Creates a [`LanguageFn`].
9    ///
10    /// # Safety
11    ///
12    /// Only call this with language functions generated from grammars
13    /// by the Tree-sitter CLI.
14    pub const unsafe fn from_raw(f: unsafe extern "C" fn() -> *const ()) -> Self {
15        Self(f)
16    }
17
18    /// Gets the function wrapped by this [`LanguageFn`].
19    #[must_use]
20    pub const fn into_raw(self) -> unsafe extern "C" fn() -> *const () {
21        self.0
22    }
23}