Skip to content

src: Use V8 function to get Module Namespace #16261

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
bmeck wants to merge 3 commits into from
Closed

src: Use V8 function to get Module Namespace #16261

Show file tree
Hide file tree
Changes from 2 commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
43d99bb
src: Use V8 function to get Module Namespace
bmeck Oct 17, 2017
41cdcab
nits
bmeck Oct 17, 2017
3256d23
long line
bmeck Oct 19, 2017
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
7 changes: 2 additions & 5 deletions lib/internal/loader/Loader.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2,10 +2,7 @@

const { getURLFromFilePath } = require('internal/url');

const {
getNamespaceOfModuleWrap,
createDynamicModule
} = require('internal/loader/ModuleWrap');
const { createDynamicModule } = require('internal/loader/ModuleWrap');

const ModuleMap = require('internal/loader/ModuleMap');
const ModuleJob = require('internal/loader/ModuleJob');
Expand Down Expand Up @@ -99,7 +96,7 @@ class Loader {
async import(specifier, parentURL = this.base) {
const job = await this.getModuleJob(specifier, parentURL);
const module = await job.run();
return getNamespaceOfModuleWrap(module);
return module.namespace();
}
}
Object.setPrototypeOf(Loader.prototype, null);
Expand Down
8 changes: 0 additions & 8 deletions lib/internal/loader/ModuleWrap.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -6,13 +6,6 @@ const debug = require('util').debuglog('esm');
const ArrayJoin = Function.call.bind(Array.prototype.join);
const ArrayMap = Function.call.bind(Array.prototype.map);

const getNamespaceOfModuleWrap = (m) => {
const tmp = new ModuleWrap('import * as _ from "";_;', '');
tmp.link(async () => m);
tmp.instantiate();
return tmp.evaluate();
};

const createDynamicModule = (exports, url = '', evaluate) => {
debug(
`creating ESM facade for ${url} with exports: ${ArrayJoin(exports, ', ')}`
Expand Down Expand Up @@ -57,6 +50,5 @@ const createDynamicModule = (exports, url = '', evaluate) => {

module.exports = {
createDynamicModule,
getNamespaceOfModuleWrap,
ModuleWrap
};
23 changes: 23 additions & 0 deletions src/module_wrap.cc
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -207,6 +207,28 @@ void ModuleWrap::Evaluate(const FunctionCallbackInfo<Value>& args) {
args.GetReturnValue().Set(ret);
}

void ModuleWrap::Namespace(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
auto isolate = args.GetIsolate();
auto that = args.This();
ModuleWrap* obj = Unwrap<ModuleWrap>(that);
Copy link
Copy Markdown
Member

@addaleax addaleax Oct 17, 2017

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Can you CHECK_NE(obj, nullptr);?

Copy link
Copy Markdown
Member Author

@bmeck bmeck Oct 17, 2017

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

done

CHECK_NE(obj, nullptr);

auto module = obj->module_.Get(isolate);

switch (module->GetStatus()) {
default:
return env->ThrowError("cannot get namespace, Module has not been instantiated");
Copy link
Copy Markdown
Member

@bnoordhuis bnoordhuis Oct 18, 2017

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Long line. Didn't make lint or make test complain about that?

Copy link
Copy Markdown
Member Author

@bmeck bmeck Oct 19, 2017

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

i didn't see one. fixed.

case v8::Module::Status::kInstantiated:
case v8::Module::Status::kEvaluating:
case v8::Module::Status::kEvaluated:
break;
}

auto result = module->GetModuleNamespace();
args.GetReturnValue().Set(result);
}

MaybeLocal<Module> ModuleWrap::ResolveCallback(Local<Context> context,
Local<String> specifier,
Local<Module> referrer) {
Expand Down Expand Up @@ -516,6 +538,7 @@ void ModuleWrap::Initialize(Local<Object> target,
env->SetProtoMethod(tpl, "link", Link);
env->SetProtoMethod(tpl, "instantiate", Instantiate);
env->SetProtoMethod(tpl, "evaluate", Evaluate);
env->SetProtoMethod(tpl, "namespace", Namespace);
Copy link
Copy Markdown
Member

@addaleax addaleax Oct 17, 2017

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

getNamespace & GetNamespace? At least if this is idempotent I think that’d be a better name

Copy link
Copy Markdown
Member Author

@bmeck bmeck Oct 17, 2017

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

it can throw if it isn't instantiated.


target->Set(FIXED_ONE_BYTE_STRING(isolate, "ModuleWrap"), tpl->GetFunction());
env->SetMethod(target, "resolve", node::loader::ModuleWrap::Resolve);
Expand Down
1 change: 1 addition & 0 deletions src/module_wrap.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,7 @@ class ModuleWrap : public BaseObject {
static void Link(const v8::FunctionCallbackInfo<v8::Value>& args);
static void Instantiate(const v8::FunctionCallbackInfo<v8::Value>& args);
static void Evaluate(const v8::FunctionCallbackInfo<v8::Value>& args);
static void Namespace(const v8::FunctionCallbackInfo<v8::Value>& args);
static void GetUrl(v8::Local<v8::String> property,
const v8::PropertyCallbackInfo<v8::Value>& info);
static void Resolve(const v8::FunctionCallbackInfo<v8::Value>& args);
Expand Down
⚡