wasmy-vm 0.3.0

use wasmy_abi::*;

use crate::instance::{self, WasmInfo};

pub fn load_wasm(wasm_info: WasmInfo) -> Result<()> {
    instance::load(&wasm_info, |_ins| -> Result<()>{ Ok(()) })
}

pub fn call_wasm<A: Message, R: Message>(wasm_info: WasmInfo, method: Method, data: A) -> Result<R> {
    let guest_args = InArgs::try_new(method, data)?;
    instance::load(&wasm_info, |ins| -> Result<R>{
        let ctx_id = ins.gen_ctx_id();
        #[cfg(debug_assertions)] println!("ctx_id={}, method={}, data={:?}", ctx_id, guest_args.get_method(), guest_args.get_data());
        let buffer_len = ins.use_mut_buffer(ctx_id, guest_args.compute_size() as usize, |buffer| {
            instance::write_to_with_cached_sizes(&guest_args, buffer)
        });
        let found = ins.call_wasm_handler(method, ctx_id, buffer_len as i32);
        if !found {
            return ERR_CODE_UNKNOWN.to_result("not found method");
        }
        let buffer = ins.take_buffer(ctx_id).unwrap_or(vec![]);
        let res = if buffer.len() > 0 {
            OutResult::parse_from_bytes(buffer.as_slice()).unwrap()
        } else {
            OutResult::new()
        };
        ins.try_reuse_buffer(buffer);
        res.into()
    })
}