On Sat, Sep 21, 2013 at 7:22 PM, ~flow <[email protected]> wrote:
> so the failure to compile is not inherent to an unstable node distro, it's
> just a (rather pervasive) accident of the API that a given module happens to
> use, right?
>
> this seems to imply that many unmaintained modules will not be available in
> 0.12 unless fixes get published.
>
> is there any guide how to migrate C code from 0.10 to 0.11 and on?
The two main changes are as follows:
* Persistent<T> no longer derives from Handle<T>. To recreate the
Handle from a Persistent, call Local<T>::New(isolate, persistent).
You can obtain the isolate with Isolate::GetCurrent() (but note that
Isolate::GetCurrent() will probably go away in newer versions of V8.)
* The prototype of C++ callbacks and accessors has changed. Before,
your function looked like this:
Handle<Value> MyCallback(const Arguments& args) {
HandleScope handle_scope;
/* Do useful work, then: */
return handle_scope.Close(Integer::New(42));
/* Or: */
return handle_scope.Close(String::New("hello"));
/* Or: */
return Null();
}
In v0.11 and v0.12 that becomes:
void MyCallback(const FunctionCallbackInfo<Value>& args) {
Isolate* isolate = args.GetIsolate();
HandleScope handle_scope(isolate);
/* Do useful work, then: */
args.GetReturnValue().Set(42);
/* Or: */
args.GetReturnValue().Set(String::NewFromUtf8(isolate, "hello"));
/* Or: */
args.GetReturnValue().SetNull();
}
There have been more changes but these two impact every native add-on.
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