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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "ModuleLoadRequest.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/HoldDropJSObjects.h"
#include "mozilla/dom/ScriptLoadContext.h"
#include "LoadedScript.h"
#include "LoadContextBase.h"
#include "ModuleLoaderBase.h"
namespace JS::loader {
#undef LOG
#define LOG(args) \
MOZ_LOG(ModuleLoaderBase::gModuleLoaderBaseLog, mozilla::LogLevel::Debug, \
args)
NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(ModuleLoadRequest,
ScriptLoadRequest)
NS_IMPL_CYCLE_COLLECTION_CLASS(ModuleLoadRequest)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(ModuleLoadRequest,
ScriptLoadRequest)
tmp->mReferrerScript = nullptr;
tmp->mModuleRequestObj = nullptr;
tmp->mPayload.setUndefined();
NS_IMPL_CYCLE_COLLECTION_UNLINK(mLoader, mRootModule, mModuleScript)
tmp->ClearDynamicImport();
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(ModuleLoadRequest,
ScriptLoadRequest)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLoader, mRootModule, mModuleScript)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(ModuleLoadRequest,
ScriptLoadRequest)
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mReferrerScript)
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mModuleRequestObj)
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mPayload)
NS_IMPL_CYCLE_COLLECTION_TRACE_END
ModuleLoadRequest::ModuleLoadRequest(
nsIURI* aURI, ModuleType aModuleType,
mozilla::dom::ReferrerPolicy aReferrerPolicy,
ScriptFetchOptions* aFetchOptions,
const mozilla::dom::SRIMetadata& aIntegrity, nsIURI* aReferrer,
LoadContextBase* aContext, Kind aKind, ModuleLoaderBase* aLoader,
ModuleLoadRequest* aRootModule)
: ScriptLoadRequest(ScriptKind::eModule, aURI, aReferrerPolicy,
aFetchOptions, aIntegrity, aReferrer, aContext),
mIsTopLevel(aKind == Kind::TopLevel || aKind == Kind::DynamicImport),
mModuleType(aModuleType),
mIsDynamicImport(aKind == Kind::DynamicImport),
mLoader(aLoader),
mRootModule(aRootModule) {
MOZ_ASSERT(mLoader);
}
nsIGlobalObject* ModuleLoadRequest::GetGlobalObject() {
return mLoader->GetGlobalObject();
}
bool ModuleLoadRequest::IsErrored() const {
return !mModuleScript || mModuleScript->HasParseError();
}
void ModuleLoadRequest::Cancel() {
if (IsCanceled()) {
return;
}
if (IsFinished()) {
return;
}
ScriptLoadRequest::Cancel();
mModuleScript = nullptr;
mReferrerScript = nullptr;
mModuleRequestObj = nullptr;
}
void ModuleLoadRequest::SetReady() {
MOZ_ASSERT(!IsFinished());
// Mark a module as ready to execute. This means that this module and all it
// dependencies have had their source loaded, parsed as a module and the
// modules instantiated.
ScriptLoadRequest::SetReady();
}
void ModuleLoadRequest::ModuleLoaded() {
// A module that was found to be marked as fetching in the module map has now
// been loaded.
LOG(("ScriptLoadRequest (%p): Module loaded", this));
if (IsCanceled()) {
return;
}
MOZ_ASSERT(IsFetching() || IsPendingFetchingError());
mModuleScript = mLoader->GetFetchedModule(ModuleMapKey(mURI, mModuleType));
if (IsErrored()) {
ModuleErrored();
return;
}
}
void ModuleLoadRequest::LoadFailed() {
// We failed to load the source text or an error occurred unrelated to the
// content of the module (e.g. OOM).
LOG(("ScriptLoadRequest (%p): Module load failed", this));
if (IsCanceled()) {
return;
}
MOZ_ASSERT(IsFetching() || IsPendingFetchingError());
MOZ_ASSERT(!mModuleScript);
Cancel();
LoadFinished();
}
void ModuleLoadRequest::ModuleErrored() {
// Parse error, failure to resolve imported modules or error loading import.
LOG(("ScriptLoadRequest (%p): Module errored", this));
if (IsCanceled()) {
return;
}
MOZ_ASSERT(!IsFinished());
mozilla::DebugOnly<bool> hasRethrow =
mModuleScript && mModuleScript->HasErrorToRethrow();
// When LoadRequestedModules fails, we will set error to rethrow to the module
// script and call ModuleErrored().
MOZ_ASSERT(IsErrored() || hasRethrow);
if (IsFinished()) {
// Cancelling an outstanding import will error this request.
return;
}
SetReady();
LoadFinished();
}
void ModuleLoadRequest::LoadFinished() {
RefPtr<ModuleLoadRequest> request(this);
if (IsTopLevel() && IsDynamicImport()) {
mLoader->RemoveDynamicImport(request);
}
mLoader->OnModuleLoadComplete(request);
}
void ModuleLoadRequest::SetDynamicImport(LoadedScript* aReferencingScript,
Handle<JSObject*> aModuleRequestObj,
Handle<JSObject*> aPromise) {
MOZ_ASSERT(mPayload.isUndefined());
mModuleRequestObj = aModuleRequestObj;
mPayload = ObjectValue(*aPromise);
mozilla::HoldJSObjects(this);
}
void ModuleLoadRequest::ClearDynamicImport() {
mModuleRequestObj = nullptr;
mPayload = UndefinedValue();
}
} // namespace JS::loader
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