typst_wasm_protocol/
lib.rs

1pub use typst_wasm_macros::wasm_export;
2
3#[link(wasm_import_module = "typst_env")]
4unsafe extern "C" {
5    #[link_name = "wasm_minimal_protocol_send_result_to_host"]
6    unsafe fn __send_result_to_host(ptr: *const u8, len: usize);
7    #[link_name = "wasm_minimal_protocol_write_args_to_buffer"]
8    unsafe fn __write_args_to_buffer(ptr: *mut u8);
9}
10
11pub fn send_result_to_host(val: Vec<u8>) {
12    unsafe {
13        __send_result_to_host(val.as_ptr(), val.len());
14    }
15}
16
17pub fn write_args_to_buffer(ptr: *mut u8) {
18    unsafe {
19        __write_args_to_buffer(ptr);
20    }
21}
22
23pub trait PluginResult {
24    fn send_result(self) -> i32;
25}
26
27impl<T, E> PluginResult for Result<T, E>
28where
29    T: Into<Vec<u8>>,
30    E: ToString,
31{
32    fn send_result(self) -> i32 {
33        let (value, code) = match self {
34            Ok(value) => (value.into(), 0),
35            Err(err) => (err.to_string().into_bytes(), 1),
36        };
37        send_result_to_host(value);
38        code
39    }
40}
41
42impl PluginResult for &[u8] {
43    fn send_result(self) -> i32 {
44        send_result_to_host(self.to_vec());
45        0
46    }
47}
48
49impl PluginResult for Vec<u8> {
50    fn send_result(self) -> i32 {
51        send_result_to_host(self);
52        0
53    }
54}
typst_wasm_protocol/lib.rs

typst_wasm_protocol/
lib.rs
