I have code in Javascript that sends an object to my node v8 C++ add-on
module. I want to iterate through the keys and values of that object in
C++. Currently I do this:
Local<Object> pt = args[0].As<Object>();
v8::Local<v8::Array> keys = pt->GetOwnPropertyNames();
uint32_t length = keys->Length();
for (u_int32_t i = 0; i < length; ++i) {
v8::Local<v8::Value> key = keys->Get(i);
v8::Local<v8::String> key_str(key->ToString());
v8::String::Utf8Value tag(key_str);
v8::String::Utf8Value val(pt->Get(key_str));
// do stuff with tag and val
.......
The calls to keys->Get() and pt->Get() are so, so, so slow: profiling
reveals that just those two lines take 70% of the runtime of my
application. Is there a better way to do this? My searching came up with
GetIndexedPropertiesExternalArrayData, but apparently that's gone now.
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