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Issue #618 - Further align error handling for module scripts with the spec

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Ref: BZ 1388728
This commit is contained in:
Moonchild 2020-07-04 16:28:30 +00:00 • committed by Roy Tam
commit 743bdc04fb
6 changed files with 280 additions and 89 deletions
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42
dom/script/ModuleLoadRequest.cpp
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@ -43,10 +43,16 @@ void ModuleLoadRequest::Cancel()
ScriptLoadRequest::Cancel();
mModuleScript = nullptr;
mProgress = ScriptLoadRequest::Progress::Ready;
CancelImports();
mReady.RejectIfExists(NS_ERROR_DOM_ABORT_ERR, __func__);
}
void
ModuleLoadRequest::CancelImports()
{
for (size_t i = 0; i < mImports.Length(); i++) {
mImports[i]->Cancel();
}
mReady.RejectIfExists(NS_ERROR_FAILURE, __func__);
}
void
@ -77,25 +83,53 @@ ModuleLoadRequest::ModuleLoaded()
// been loaded.
mModuleScript = mLoader->GetFetchedModule(mURI);
if (!mModuleScript || mModuleScript->IsErrored()) {
ModuleErrored();
return;
}
mLoader->StartFetchingModuleDependencies(this);
}
void
ModuleLoadRequest::ModuleErrored()
{
mLoader->CheckModuleDependenciesLoaded(this);
MOZ_ASSERT(!mModuleScript || mModuleScript->IsErrored());
CancelImports();
SetReady();
LoadFinished();
}
void
ModuleLoadRequest::DependenciesLoaded()
{
// The module and all of its dependencies have been successfully fetched and
// compiled.
MOZ_ASSERT(mModuleScript);
mLoader->CheckModuleDependenciesLoaded(this);
SetReady();
mLoader->ProcessLoadedModuleTree(this);
mLoader = nullptr;
mParent = nullptr;
LoadFinished();
}
void
ModuleLoadRequest::LoadFailed()
{
// We failed to load the source text or an error occurred unrelated to the
// content of the module (e.g. OOM).
MOZ_ASSERT(!mModuleScript);
Cancel();
LoadFinished();
}
void
ModuleLoadRequest::LoadFinished()
{
mLoader->ProcessLoadedModuleTree(this);
mLoader = nullptr;
mParent = nullptr;