wasmy

wasmy, easily customize my wasm app!

features

• [x] Completely shield vm-wasm interaction details
• [x] Use protobuf as the interaction protocol
• [x] Simple and flexible ABI, supports freely adding vm and wasm handlers using attribute macros (#[vm_handle(0)] /#[wasm_handle(0)])
• [x] Provide attribute macro #[wasm_onload] support to initialize wasm

crates

• wasmy-vm : vm dependencies

toml [dependencies] wasmy-vm = "0.4.2"

• wasmy-abi : wasm dependencies

toml [dependencies] wasmy-abi = "0.4.2"

• wasmy-macros : no direct dependency

toml wasmy-macros = "0.4.2"

example

• wasm code (target = "wasm32-wasi")

```rust use rand::random; use wasmyabi::*; use wasmyabi::test::*;

[wasm_handle(0)]

fn multiply(ctx: WasmCtx, args: TestArgs) -> Result { let rid = random::() as i32; println!("[Wasm-Simple({})] handle wasm method({}) ctx={:?}, args={{{:?}}}", rid, 0, ctx, args);

let mut vmargs = TestArgs::new(); vmargs.a = rid; vmargs.b = rid; let vmrets: TestRets = ctx.callvm(0, vmargs)?; println!("[Wasm-Simple({})] call vm method({}): args={{{:?}}}, rets={}", rid, 0, vmrets, vmrets.get_c());

let mut rets = TestRets::new(); rets.set_c(args.a * args.b); Ok(rets) } ```

• vm code

```rust use wasmy_vm::*; use crate::test::{TestArgs, TestRets};

...

fn main() { println!("wasmy, easily customize my wasm app!"); ... let wasmcaller = loadwasm(wasmpath).unwrap(); let mut data = TestArgs::new(); data.seta(2); data.setb(5); for i in 1..=3 { let res: TestRets = wasmcaller.call(0, data.clone()).unwrap(); println!("NO.{}: {}+{}={}", i, data.geta(), data.getb(), res.get_c()) } }

[vm_handle(0)]

fn add(args: TestArgs) -> Result { let mut rets = TestRets::new(); rets.set_c(args.a + args.b); Ok(rets) } ```

test simple example

• raw cargo cmd:

```shell $ rustup target add wasm32-wasi

$ cargo +nightly build --target=wasm32-wasi --example=simple $ cargo +nightly run --example=vm -- ../../wasm32-wasi/debug/examples/simple.wasm ```

• alias cargo cmd:

```shell $ rustup target add wasm32-wasi

$ cargo +nightly wasm simple $ cargo +nightly vm simple ```