wasmtime_c_api/component/
instance.rs

1use wasmtime::component::{Func, Instance};
2
3use crate::WasmtimeStoreContextMut;
4
5use super::wasmtime_component_export_index_t;
6
7#[unsafe(no_mangle)]
8pub unsafe extern "C" fn wasmtime_component_instance_get_export_index(
9    instance: &Instance,
10    context: WasmtimeStoreContextMut<'_>,
11    instance_export_index: *const wasmtime_component_export_index_t,
12    name: *const u8,
13    name_len: usize,
14) -> Option<Box<wasmtime_component_export_index_t>> {
15    let name = unsafe { std::slice::from_raw_parts(name, name_len) };
16    let Ok(name) = std::str::from_utf8(name) else {
17        return None;
18    };
19
20    let instance_export_index = if instance_export_index.is_null() {
21        None
22    } else {
23        Some((*instance_export_index).export_index)
24    };
25
26    instance
27        .get_export_index(context, instance_export_index.as_ref(), &name)
28        .map(|export_index| Box::new(wasmtime_component_export_index_t { export_index }))
29}
30
31#[unsafe(no_mangle)]
32pub unsafe extern "C" fn wasmtime_component_instance_get_func(
33    instance: &Instance,
34    context: WasmtimeStoreContextMut<'_>,
35    export_index: &wasmtime_component_export_index_t,
36    func_out: &mut Func,
37) -> bool {
38    if let Some(func) = instance.get_func(context, export_index.export_index) {
39        *func_out = func;
40        true
41    } else {
42        false
43    }
44}
wasmtime_c_api/component/instance.rs

wasmtime_c_api/component/
instance.rs
