feat: Timeline extension

Cargo.toml

@@ -12,6 +12,7 @@ members = [
 # xtask, testing and the bindings should only be built when invoked explicitly.
 default-members = ["benchmarks", "crates/*"]
 resolver = "2"
+exclude = ["crates/matrix-sdk-extensions/guests"]
 
 [workspace.package]
 rust-version = "1.70"

bindings/matrix-sdk-ffi/Cargo.toml

@@ -52,6 +52,7 @@ uniffi = { workspace = true, features = ["tokio"] }
 url = "2.2.2"
 zeroize = { workspace = true }
 uuid = { version = "1.4.1", features = ["v4"] }
+javascriptcore = { git = "https://github.com/endoli/javascriptcore.rs", branch = "main" }
 
 [target.'cfg(target_os = "android")'.dependencies]
 log-panics = { version = "2", features = ["with-backtrace"] }

bindings/matrix-sdk-ffi/src/client.rs

@@ -296,6 +296,28 @@ impl Client {
 
         Ok(())
     }
+
+    pub fn test_wasm(&self) {
+        use javascriptcore::{JSContext, JSValue};
+
+        let mut bytes = 
+b"\x00asm\x01\x00\x00\x00\x01\x07\x01`\x02\x7f\x7f\x01\x7f\x03\x02\x01\x00\x05\x03\x01\x00\x10\x06\x11\x02\x7f\x00A\x80\x80\xc0\x00\x0b\x7f\x00A\x80\x80\xc0\x00\x0b\x07+\x04\x06memory\x02\x00\x03sum\x00\x00\n__data_end\x03\x00\x0b__heap_base\x03\x01\n\t\x01\x07\x00 \x00 \x01j\x0b\x00,\x0ftarget_features\x02+\x0fmutable-globals+\x08sign-ext".to_owned();
+
+        let ctx = JSContext::default();
+        let global = ctx.global_object().unwrap();
+        let wasm = global.get_property("WebAssembly").as_object().unwrap();
+        let module = wasm.get_property("Module").as_object().unwrap();
+        let bytes = unsafe { JSValue::new_typed_array_with_bytes(&ctx, &mut bytes[..]).unwrap() };
+        let compiled_module = module.call_as_constructor(&[bytes]).unwrap();
+        let instance = wasm.get_property("Instance").as_object().unwrap();
+        let instance = instance.call_as_constructor(&[compiled_module]).unwrap().as_object().unwrap();
+        let exports = instance.get_property("exports").as_object().unwrap();
+        let sum = exports.get_property("sum").as_object().unwrap();
+
+        let result = sum.call_as_function(None, &[JSValue::new_number(&ctx, 1.), JSValue::new_number(&ctx, 2.)]).unwrap();
+
+        assert_eq!(result.as_number().unwrap(), 3.);
+    }
 }
 
 impl Client {

crates/matrix-sdk-extensions-macros/Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+authors = ["Ivan Enderlin <[email protected]>"]
+edition = "2021"
+name = "matrix-sdk-extensions-macros"
+repository = "https://github.com/matrix-org/matrix-rust-sdk"
+rust-version = { workspace = true }
+version = "0.0.1"
+
+[lib]
+proc-macro = true
+
+[features]
+default = ["wasmtime", "javascriptcore"]
+wasmtime = ["dep:wasmtime-wit-bindgen"]
+javascriptcore = []
+
+[dependencies]
+heck = { version = "0.4.1" }
+proc-macro2 = "1.0.69"
+quote = "1.0.33"
+syn = { version = "2.0.39", features = ["full"] }
+wasmtime-wit-bindgen = { version = "14.0.4", optional = true }
+wit-parser = "0.12.1"