wasmtime_c_api/
tag.rs

1use crate::{
2    WasmtimeStoreContext, WasmtimeStoreContextMut, handle_result, wasm_tagtype_t, wasmtime_error_t,
3};
4use std::mem::MaybeUninit;
5use wasmtime::Tag;
6
7/// Creates a new host-defined tag with the given type.
8#[unsafe(no_mangle)]
9pub unsafe extern "C" fn wasmtime_tag_new(
10    mut store: WasmtimeStoreContextMut<'_>,
11    tt: &wasm_tagtype_t,
12    ret: &mut MaybeUninit<Tag>,
13) -> Option<Box<wasmtime_error_t>> {
14    let tag_type = tt.to_tag_type(store.engine());
15    handle_result(Tag::new(&mut store, &tag_type), |tag| {
16        ret.write(tag);
17    })
18}
19
20/// Returns the type of this tag.
21#[unsafe(no_mangle)]
22pub extern "C" fn wasmtime_tag_type(
23    store: WasmtimeStoreContext<'_>,
24    tag: &Tag,
25) -> Box<wasm_tagtype_t> {
26    let ty = tag.ty(store);
27    Box::new(wasm_tagtype_t::from_tag_type(ty))
28}
29
30/// Tests whether two tags are the same (identity equality).
31#[unsafe(no_mangle)]
32pub extern "C" fn wasmtime_tag_eq(store: WasmtimeStoreContext<'_>, a: &Tag, b: &Tag) -> bool {
33    Tag::eq(a, b, store)
34}
wasmtime_c_api/tag.rs

wasmtime_c_api/
tag.rs
