Experiments with creating a wasm binding for kifu-core

flake.nix

@@ -39,6 +39,7 @@
             pkgs.sqlite
             pkgs.rustup
             pkgs.crate2nix
+            pkgs.wasm-pack
           ];
           LIBCLANG_PATH="${pkgs.llvmPackages.libclang.lib}/lib";
         };

kifu/ffi/kifu-wasm/Cargo.lock

@@ -0,0 +1,285 @@
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+# It is not intended for manual editing.
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+
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+ "bytes",
+ "pin-project-lite",
+ "tokio-macros",
+ "windows-sys",
+]
+
+[[package]]
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+ "syn 2.0.15",
+]
+
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+dependencies = [
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+ "wasm-bindgen-macro",
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+ "log",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+ "wasm-bindgen-shared",
+]
+
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+ "js-sys",
+ "wasm-bindgen",
+ "web-sys",
+]
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+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
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+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
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+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
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kifu/ffi/kifu-wasm/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "kifu-wasm"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+kifu-core = { path = "../../kifu-core" }
+wasm-bindgen = "0.2"
+wasm-bindgen-futures = "*"

kifu/ffi/kifu-wasm/src/lib.rs

@@ -0,0 +1,30 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+extern "C" {
+    #[wasm_bindgen(js_namespace = console)]
+    pub fn log(s: &str);
+}
+
+#[wasm_bindgen]
+pub struct Request(kifu_core::Request);
+
+/* Somehow uncommenting this code actually causes the module to not load. Maybe a name conflict?
+ * Don't know.
+#[wasm_bindgen]
+pub struct Response(kifu_core::Response);
+*/
+
+#[wasm_bindgen]
+pub struct CoreApp(kifu_core::CoreApp);
+
+#[wasm_bindgen]
+pub fn coreapp_new() -> CoreApp {
+    log(&format!("coreapp_new"));
+    CoreApp(kifu_core::CoreApp::new())
+}
+
+#[wasm_bindgen]
+pub async fn coreapp_dispatch(core: &CoreApp) {
+    log(&format!("coreapp_dispatch"));
+}

kifu/hello-wasm/Cargo.lock

@@ -0,0 +1,158 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
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+
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+version = "0.1.0"
+dependencies = [
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+]
+
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+ "unicode-ident",
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+dependencies = [
+ "cfg-if",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.84"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95ce90fd5bcc06af55a641a86428ee4229e44e07033963a2290a8e241607ccb9"
+dependencies = [
+ "bumpalo",
+ "log",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-futures"
+version = "0.4.34"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f219e0d211ba40266969f6dbdd90636da12f75bee4fc9d6c23d1260dadb51454"
+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "wasm-bindgen",
+ "web-sys",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.84"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c21f77c0bedc37fd5dc21f897894a5ca01e7bb159884559461862ae90c0b4c5"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.84"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2aff81306fcac3c7515ad4e177f521b5c9a15f2b08f4e32d823066102f35a5f6"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.84"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0046fef7e28c3804e5e38bfa31ea2a0f73905319b677e57ebe37e49358989b5d"
+
+[[package]]
+name = "web-sys"
+version = "0.3.61"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e33b99f4b23ba3eec1a53ac264e35a755f00e966e0065077d6027c0f575b0b97"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]

kifu/hello-wasm/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "hello-wasm"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+wasm-bindgen = "0.2"
+wasm-bindgen-futures = "0.4"

kifu/hello-wasm/index.html

@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html lang="en-US">
+    <head>
+        <meta charset="utf-8" />
+        <title>hello-wasm example</title>
+    </head>
+    <body>
+        <script type="module">
+            import init, { greet } from "./pkg/hello_wasm.js";
+            init().then(() => {
+                greet("WebAssembly");
+            });
+        </script>
+    </body>
+</html>

kifu/hello-wasm/src/lib.rs

@@ -0,0 +1,29 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+extern "C" {
+    pub fn alert(s: &str);
+    #[wasm_bindgen(js_namespace = console)]
+    pub fn log(s: &str);
+}
+
+#[wasm_bindgen]
+pub async fn greet(name: &str) {
+    log(&format!("Hello, {}! This is an async function.", name));
+}
+
+#[wasm_bindgen]
+pub fn add(left: usize, right: usize) -> usize {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}

kifu/kifu-core/Cargo.lock

@@ -8,33 +8,12 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
-[[package]]
-name = "bitflags"
-version = "1.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
-
 [[package]]
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 version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "89b2fd2a0dcf38d7971e2194b6b6eebab45ae01067456a7fd93d5547a61b70be"
 
-[[package]]
-name = "cfg-if"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
-
-[[package]]
-name = "hermit-abi"
-version = "0.2.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee512640fe35acbfb4bb779db6f0d80704c2cacfa2e39b601ef3e3f47d1ae4c7"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "kifu-core"
 version = "0.1.0"
@@ -42,82 +21,12 @@ dependencies = [
  "tokio",
 ]
 
-[[package]]
-name = "libc"
-version = "0.2.140"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "99227334921fae1a979cf0bfdfcc6b3e5ce376ef57e16fb6fb3ea2ed6095f80c"
-
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-version = "0.4.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "435011366fe56583b16cf956f9df0095b405b82d76425bc8981c0e22e60ec4df"
-dependencies = [
- "autocfg",
- "scopeguard",
-]
-
-[[package]]
-name = "log"
-version = "0.4.17"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
-dependencies = [
- "cfg-if",
-]
-
 [[package]]
 name = "memchr"
 version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
 
-[[package]]
-name = "mio"
-version = "0.8.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b9d9a46eff5b4ff64b45a9e316a6d1e0bc719ef429cbec4dc630684212bfdf9"
-dependencies = [
- "libc",
- "log",
- "wasi",
- "windows-sys",
-]
-
-[[package]]
-name = "num_cpus"
-version = "1.15.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0fac9e2da13b5eb447a6ce3d392f23a29d8694bff781bf03a16cd9ac8697593b"
-dependencies = [
- "hermit-abi",
- "libc",
-]
-
-[[package]]
-name = "parking_lot"
-version = "0.12.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3742b2c103b9f06bc9fff0a37ff4912935851bee6d36f3c02bcc755bcfec228f"
-dependencies = [
- "lock_api",
- "parking_lot_core",
-]
-
-[[package]]
-name = "parking_lot_core"
-version = "0.9.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9069cbb9f99e3a5083476ccb29ceb1de18b9118cafa53e90c9551235de2b9521"
-dependencies = [
- "cfg-if",
- "libc",
- "redox_syscall",
- "smallvec",
- "windows-sys",
-]
-
 [[package]]
 name = "pin-project-lite"
 version = "0.2.9"
@@ -126,9 +35,9 @@ checksum = "e0a7ae3ac2f1173085d398531c705756c94a4c56843785df85a60c1a0afac116"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.52"
+version = "1.0.56"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d0e1ae9e836cc3beddd63db0df682593d7e2d3d891ae8c9083d2113e1744224"
+checksum = "2b63bdb0cd06f1f4dedf69b254734f9b45af66e4a031e42a7480257d9898b435"
 dependencies = [
  "unicode-ident",
 ]
@@ -142,46 +51,6 @@ dependencies = [
  "proc-macro2",
 ]
 
-[[package]]
-name = "redox_syscall"
-version = "0.2.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
-dependencies = [
- "bitflags",
-]
-
-[[package]]
-name = "scopeguard"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
-
-[[package]]
-name = "signal-hook-registry"
-version = "1.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d8229b473baa5980ac72ef434c4415e70c4b5e71b423043adb4ba059f89c99a1"
-dependencies = [
- "libc",
-]
-
-[[package]]
-name = "smallvec"
-version = "1.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"
-
-[[package]]
-name = "socket2"
-version = "0.4.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "64a4a911eed85daf18834cfaa86a79b7d266ff93ff5ba14005426219480ed662"
-dependencies = [
- "libc",
- "winapi",
-]
-
 [[package]]
 name = "syn"
 version = "1.0.109"
@@ -201,14 +70,8 @@ checksum = "03201d01c3c27a29c8a5cee5b55a93ddae1ccf6f08f65365c2c918f8c1b76f64"
 dependencies = [
  "autocfg",
  "bytes",
- "libc",
  "memchr",
- "mio",
- "num_cpus",
- "parking_lot",
  "pin-project-lite",
- "signal-hook-registry",
- "socket2",
  "tokio-macros",
  "windows-sys",
 ]
@@ -230,34 +93,6 @@ version = "1.0.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e5464a87b239f13a63a501f2701565754bae92d243d4bb7eb12f6d57d2269bf4"
 
-[[package]]
-name = "wasi"
-version = "0.11.0+wasi-snapshot-preview1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
-
-[[package]]
-name = "winapi"
-version = "0.3.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
-dependencies = [
- "winapi-i686-pc-windows-gnu",
- "winapi-x86_64-pc-windows-gnu",
-]
-
-[[package]]
-name = "winapi-i686-pc-windows-gnu"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
-
-[[package]]
-name = "winapi-x86_64-pc-windows-gnu"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
-
 [[package]]
 name = "windows-sys"
 version = "0.45.0"

kifu/kifu-core/Cargo.toml

@@ -6,4 +6,4 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-tokio = { version = "1.26", features = [ "full" ] }
+tokio = { version = "1.26", features = [ "sync", "io-util", "macros", "rt", "time" ] }

kifu/kifu-pwa/converter.css

@@ -0,0 +1,38 @@
+html {
+  background: rgb(243, 243, 243);
+  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+  font-size: 15pt;
+}
+
+html, body {
+  height: 100%;
+  margin: 0;
+}
+
+body {
+  display: grid;
+  place-items: center;
+}
+
+#converter {
+  width: 15rem;
+  padding: 2rem;
+  border-radius: .5rem;
+  box-shadow: 0 0 2rem 0 #0001;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+}
+
+#converter input, #converter select {
+  font-family: inherit;
+  font-size: inherit;
+  margin-block-end: 1rem;
+  text-align: center;
+  width: 10rem;
+}
+
+#converter #output-temp {
+  font-size: 2rem;
+  font-weight: bold;
+}

kifu/kifu-pwa/converter.js

@@ -0,0 +1,50 @@
+import init, { coreapp_new, coreapp_dispatch } from "./kifu_wasm.js";
+
+const inputField = document.getElementById('input-temp');
+const fromUnitField = document.getElementById('input-unit');
+const toUnitField = document.getElementById('output-unit');
+const outputField = document.getElementById('output-temp');
+const form = document.getElementById('converter');
+
+function convertTemp(value, fromUnit, toUnit) {
+    if (fromUnit === 'c') {
+        if (toUnit === 'f') {
+            return value * 9 / 5 + 32;
+        } else if (toUnit === 'k') {
+            return value + 273.15;
+        }
+        return value
+    }
+    if (fromUnit === 'f') {
+        if (toUnit === 'c') {
+            return (value - 32) * 5 / 9;
+        } else if (toUnit === 'k') {
+            return (value + 459.67) * 5 / 9;
+        }
+        return value;
+    }
+    if (fromUnit === 'k') {
+        if (toUnit === 'c') {
+            return value - 273.15;
+        } else if (toUnit === 'f') {
+            return value * 9 / 5 - 459.67;
+        }
+        return value;
+    }
+    throw new Error('Invalid unit');
+}
+
+form.addEventListener('input', () => {
+    const inputTemp = parseFloat(inputField.value);
+    const fromUnit = fromUnitField.value;
+    const toUnit = toUnitField.value;
+
+    const outputTemp = convertTemp(inputTemp, fromUnit, toUnit);
+    outputField.value = (Math.round(outputTemp * 100) / 100) + ' ' + toUnit.toUpperCase();
+});
+
+init().then(async () => { 
+    let app = coreapp_new();
+    await coreapp_dispatch(app);
+    console.log("kifu_wasm successfully initted");
+});

kifu/kifu-pwa/index.html

@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html lang="en-US">
+    <head>
+        <meta charset="utf-8" />
+        <link rel="manifest" href="/manifest.json">
+        <link rel="stylesheet" href="converter.css">
+        <title>Temperature converter</title>
+        <script type="module" src="converter.js"></script>
+    </head>
+    <body>
+        <h1> Temperature Converter </h1>
+        <form id="converter">
+            <label for="input-temp">temperature</label>
+            <input type="text" id="input-temp" name="input-temp" value="20" />
+            <label for="input-unit">from</label>
+            <select id="input-unit" name="input-unit">
+                <option value="c" selected>Celsius</option>
+                <option value="f">Fahrenheit</option>
+                <option value="k">Kelvin</option>
+            </select>
+            <label for="output-unit">to</label>
+            <select id="output-unit" name="output-unit">
+                <option value="c">Celsius</option>
+                <option value="f" selected>Fahrenheit</option>
+                <option value="k">Kelvin</option>
+            </select>
+            <output name="output-temp" id="output-temp" for="input-temp input-unit output-unit">68 F</output>
+        </form>
+        <script>
+            if('serviceWorker' in navigator) {
+                navigator.serviceWorker.register('/sw.js', { scope: '/' });
+            }
+        </script>
+    </body>
+</html>
+

kifu/kifu-pwa/manifest.json

@@ -0,0 +1,17 @@
+{
+    "lang": "en-us",
+    "name":  "Temperature converter app",
+    "short_name": "Temperature converter",
+    "description": "A basic temperature converter application",
+    "start_url": "/",
+    "background_color": "#2f3d58",
+    "theme_color": "#2f3d58",
+    "orientation": "any",
+    "display": "standalone",
+    "icons": [
+        {
+            "src": "/icon512.png",
+            "sizes": "512x512"
+        }
+    ]
+}

kifu/kifu-pwa/sw.js

@@ -0,0 +1,31 @@
+const CACHE_NAME = 'temperature-converter-v2';
+
+self.addEventListener('install', event => {
+    event.waitUntil((async () => {
+        const cache = await caches.open(CACHE_NAME);
+        cache.addAll([
+            '/',
+            '/converter.js',
+            '/converter.css',
+            '/kifu_wasm.js',
+            '/kifu_wasm_bg.wasm',
+        ]);
+    })());
+});
+
+self.addEventListener('fetch', event => {
+    event.respondWith((async () => {
+        const cache = await caches.open(CACHE_NAME);
+        const cachedResponse = await cache.match(event.request);
+        if (cachedResponse) {
+            return cachedResponse;
+        } else {
+            try {
+                const fetchResponse = await fetch(event.request);
+                cache.put(event.request, fetchResponse.clone());
+                return fetchResponse;
+            } catch (e) {
+            }
+        }
+    })());
+});

rust-toolchain

@@ -1,2 +1,3 @@
 [toolchain]
 channel = "1.68.2"
+targets = [ "wasm32-unknown-unknown" ]