Hi,
I'm currently trying exploring expose C++ objects and classes to V8
Javascript engine using embind or webidl.
I use
emcc glue_wrapper.cc -s WASM=1 -s EXPORTED_FUNCTIONS="['_malloc']"
--post-js glue.js --post-js post-script.js -o webidl.js
to create target js file and wasm. In order to run webidl.js file and load
wasm file in v8, I modify the webidl.js a little, modify
function instantiateArrayBuffer(receiver) {
getBinaryPromise().then(function(binary) {
return WebAssembly.instantiate(binary, info);
}).then(receiver, function(reason) {
err('failed to asynchronously prepare wasm: ' + reason);
abort(reason);
});
}
to
function instantiateArrayBuffer(receiver) {
let module = new WebAssembly.Module(Module['wasmBinary']);
let instance = new WebAssembly.Instance(module, info);
receiveInstance(instance);
}
and *Module['wasmBinary'*] has already contained the binary data of target
wasm file before load the webidl.js file.
I have load the target js file and wasm file successfully . But when I run
the exported c++ class/method in js file, like this
var _t = new WebIDL(10, "YHSPY");
console.log(_t.getValueX());
console.log(_t.getValueStr());
Module.destroy(_t);
it reports
Uncaught TypeError: Cannot read property 'apply' of undefined, location:
webidl.js:0:0
STACK:
[0]asm._malloc webidl.js:2242
[1]Module._malloc webidl.js:2351
[2]prepare webidl.js:2792
[3]WebIDL webidl.js:2883
[4]anonymous main.js:32
I have tried embind, but has similar problem. I use
emcc glue_wrapper.cc -s WASM=1 -s EXPORTED_FUNCTIONS="['_malloc']"
--post-js glue.js --post-js post-script.js -o webidl.html
to create target html file and test it in brower. It works well.
can anyone give some help ?
Thanks,
wqtian
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