component_manager, strict_eval.js

frontend/src/header_panel.rs

@@ -241,8 +241,10 @@ impl HeaderPanel {
                     if raw_event.shift_key() {
                         // @TODO move `prevent_default` to MZ API (next to the `pass_to_parent` method?)
                         raw_event.prevent_default();
-                        let result = script_bridge::strict_eval(&script.lock_ref());
-                        command_result.set(Some(result));
+                        Task::start(clone!((script, command_result) async move {
+                            let result = script_bridge::strict_eval(&script.lock_ref()).await;
+                            command_result.set(Some(result));
+                        }));
                     }
                 }
             })

frontend/src/platform.rs

@@ -15,6 +15,8 @@ use browser as platform;
 
 type Filename = String;
 type JavascriptCode = String;
+type AddedDecodersCount = usize;
+type DecoderPath = String;
 
 pub async fn show_window() {
     platform::show_window().await
@@ -58,3 +60,7 @@ pub async fn load_signal_and_get_timeline(
 pub async fn unload_signal(signal_ref: wellen::SignalRef) {
     platform::unload_signal(signal_ref).await
 }
+
+pub async fn add_decoders(decoder_paths: Vec<DecoderPath>) -> AddedDecodersCount {
+    platform::add_decoders(decoder_paths).await
+}

frontend/src/platform/browser.rs

@@ -1,7 +1,7 @@
 use shared::wellen_helpers;
 use std::sync::Mutex;
 use wellen::simple::Waveform;
-use zoon::*;
+use zoon::{*, eprintln};
 
 #[derive(Default)]
 struct BrowserPlatformStore {
@@ -120,3 +120,11 @@ pub(super) async fn unload_signal(signal_ref: wellen::SignalRef) {
     let waveform = waveform_lock.as_mut().unwrap_throw();
     waveform.unload_signals(&[signal_ref]);
 }
+
+pub(super) async fn add_decoders(
+    _decoder_paths: Vec<super::DecoderPath>,
+) -> super::AddedDecodersCount {
+    // @TODO error message for user
+    eprintln!("Adding decoders is not supported in the browser.");
+    0
+}

frontend/src/platform/tauri.rs

@@ -56,6 +56,13 @@ pub(super) async fn unload_signal(signal_ref: wellen::SignalRef) {
         .unwrap_throw()
 }
 
+pub(super) async fn add_decoders(
+    decoder_paths: Vec<super::DecoderPath>,
+) -> super::AddedDecodersCount {
+    serde_wasm_bindgen::from_value(tauri_glue::add_decoders(decoder_paths).await.unwrap_throw())
+        .unwrap_throw()
+}
+
 mod tauri_glue {
     use zoon::*;
 
@@ -86,5 +93,10 @@ mod tauri_glue {
 
         #[wasm_bindgen(catch)]
         pub async fn unload_signal(signal_ref_index: usize) -> Result<(), JsValue>;
+
+        #[wasm_bindgen(catch)]
+        pub async fn add_decoders(
+            decoder_paths: Vec<super::super::DecoderPath>,
+        ) -> Result<JsValue, JsValue>;
     }
 }

frontend/src/script_bridge.rs

@@ -1,16 +1,15 @@
-use crate::STORE;
+use crate::{platform, STORE};
 use wellen::GetItem;
 use zoon::*;
 
 type FullVarName = String;
+type AddedDecodersCount = usize;
 type DecoderPath = String;
 
-#[wasm_bindgen(
-    inline_js = r#"export function strict_eval(code) { "use strict"; return eval?.(`${code}`) }"#
-)]
+#[wasm_bindgen(module = "/typescript/bundles/strict_eval.js")]
 extern "C" {
     #[wasm_bindgen(catch)]
-    pub fn strict_eval(code: &str) -> Result<JsValue, JsValue>;
+    pub async fn strict_eval(code: &str) -> Result<JsValue, JsValue>;
 }
 
 #[wasm_bindgen]
@@ -70,8 +69,7 @@ impl FW {
     }
 
     /// JS: `FW.add_decoders(["test_files/components/rust_decoder/rust_decoder.wasm"])` -> `1`
-    pub fn add_decoders(decoder_paths: Vec<DecoderPath>) -> usize {
-        zoon::println!("decoders: {decoder_paths:#?}");
-        0
+    pub async fn add_decoders(decoder_paths: Vec<DecoderPath>) -> AddedDecodersCount {
+        platform::add_decoders(decoder_paths).await
     }
 }

frontend/src/waveform_panel.rs

@@ -96,7 +96,7 @@ impl WaveformPanel {
                     if let Some(javascript_code) =
                         platform::load_file_with_selected_vars(None).await
                     {
-                        match script_bridge::strict_eval(&javascript_code) {
+                        match script_bridge::strict_eval(&javascript_code).await {
                             Ok(js_value) => {
                                 zoon::println!("File with selected vars loaded: {js_value:?}")
                             }
@@ -153,7 +153,7 @@ impl WaveformPanel {
                                 if let Some(javascript_code) =
                                     platform::load_file_with_selected_vars(Some(file)).await
                                 {
-                                    match script_bridge::strict_eval(&javascript_code) {
+                                    match script_bridge::strict_eval(&javascript_code).await {
                                         Ok(js_value) => zoon::println!(
                                             "File with selected vars loaded: {js_value:?}"
                                         ),

frontend/typescript/bundles/strict_eval.js

@@ -0,0 +1,5 @@
+"use strict";
+
+export async function strict_eval(code) { 
+    return await eval(code)
+}

frontend/typescript/bundles/tauri_glue.js

@@ -2536,7 +2536,11 @@ async function load_signal_and_get_timeline(signal_ref_index, timeline_zoom, tim
 async function unload_signal(signal_ref_index) {
   return await invoke2("unload_signal", { signal_ref_index });
 }
+async function add_decoders(decoder_paths) {
+  return await invoke2("add_decoders", { decoder_paths });
+}
 export {
+  add_decoders,
   get_hierarchy,
   load_file_with_selected_vars,
   load_signal_and_get_timeline,

frontend/typescript/tauri_glue/tauri_glue.ts

@@ -9,6 +9,8 @@ type JavascriptCode = string;
 type WellenHierarchy = unknown;
 type Timeline = unknown;
 type VarFormat = unknown;
+type AddedDecodersCount = number;
+type DecoderPath = string;
 
 export async function show_window(): Promise<void> {
     return await invoke("show_window");
@@ -47,3 +49,7 @@ export async function load_signal_and_get_timeline(
 export async function unload_signal(signal_ref_index: number): Promise<void> {
     return await invoke("unload_signal", { signal_ref_index });
 }
+
+export async function add_decoders(decoder_paths: Array<DecoderPath>): Promise<AddedDecodersCount> {
+    return await invoke("add_decoders", { decoder_paths });
+}

src-tauri/src/component_manager.rs

@@ -0,0 +1,54 @@
+use crate::{AddedDecodersCount, DecoderPath};
+use wasmtime::*;
+
+pub fn add_decoders(decoder_paths: Vec<DecoderPath>) -> AddedDecodersCount {
+    println!("decoders in Tauri: {decoder_paths:#?}");
+
+    wasmtime_test().unwrap();
+
+    decoder_paths.len()
+}
+
+fn wasmtime_test() -> wasmtime::Result<()> {
+    let engine = Engine::default();
+
+    // Modules can be compiled through either the text or binary format
+    let wat = r#"
+        (module
+            (import "host" "host_func" (func $host_hello (param i32)))
+
+            (func (export "hello")
+                i32.const 3
+                call $host_hello)
+        )
+    "#;
+    let module = Module::new(&engine, wat)?;
+
+    // Host functionality can be arbitrary Rust functions and is provided
+    // to guests through a `Linker`.
+    let mut linker = Linker::new(&engine);
+    linker.func_wrap(
+        "host",
+        "host_func",
+        |caller: Caller<'_, u32>, param: i32| {
+            println!("Got {} from WebAssembly", param);
+            println!("my host state is: {}", caller.data());
+        },
+    )?;
+
+    // All wasm objects operate within the context of a "store". Each
+    // `Store` has a type parameter to store host-specific data, which in
+    // this case we're using `4` for.
+    let mut store: Store<u32> = Store::new(&engine, 4);
+
+    // Instantiation of a module requires specifying its imports and then
+    // afterwards we can fetch exports by name, as well as asserting the
+    // type signature of the function with `get_typed_func`.
+    let instance = linker.instantiate(&mut store, &module)?;
+    let hello = instance.get_typed_func::<(), ()>(&mut store, "hello")?;
+
+    // And finally we can call the wasm!
+    hello.call(&mut store, ())?;
+
+    Ok(())
+}

src-tauri/src/lib.rs

@@ -5,6 +5,10 @@ use wellen::simple::Waveform;
 
 type Filename = String;
 type JavascriptCode = String;
+type AddedDecodersCount = usize;
+type DecoderPath = String;
+
+mod component_manager;
 
 #[derive(Default)]
 struct Store {
@@ -91,6 +95,11 @@ async fn unload_signal(signal_ref_index: usize, store: tauri::State<'_, Store>)
     Ok(())
 }
 
+#[tauri::command(rename_all = "snake_case")]
+async fn add_decoders(decoder_paths: Vec<DecoderPath>) -> Result<AddedDecodersCount, ()> {
+    Ok(component_manager::add_decoders(decoder_paths))
+}
+
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
     // https://github.com/tauri-apps/tauri/issues/8462
@@ -109,6 +118,7 @@ pub fn run() {
             get_hierarchy,
             load_signal_and_get_timeline,
             unload_signal,
+            add_decoders,
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");