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Issue #618 - Align error handling for module scripts with the spec (again)

Browse source 
This updates module implementation to match spec regarding handling of
instantiation errors, after it was changed yet again, this time to not remember
instantiation errors, but instead immediately rethrow applicable ones.

Ref: BZ 1420420
This commit is contained in:
Moonchild 2020-07-08 12:58:30 +00:00 • committed by Roy Tam
commit 0d874713ef
20 changed files with 331 additions and 266 deletions
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43
dom/script/ModuleScript.cpp
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@ -26,7 +26,8 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(ModuleScript)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mLoader)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mBaseURL)
tmp->UnlinkModuleRecord();
tmp->mError.setUndefined();
tmp->mParseError.setUndefined();
tmp->mErrorToRethrow.setUndefined();
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(ModuleScript)
@ -35,7 +36,8 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(ModuleScript)
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mModuleRecord)
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mError)
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mParseError)
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mErrorToRethrow)
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(ModuleScript)
@ -48,7 +50,8 @@ ModuleScript::ModuleScript(ScriptLoader *aLoader, nsIURI* aBaseURL)
MOZ_ASSERT(mLoader);
MOZ_ASSERT(mBaseURL);
MOZ_ASSERT(!mModuleRecord);
MOZ_ASSERT(mError.isUndefined());
MOZ_ASSERT(!HasParseError());
MOZ_ASSERT(!HasErrorToRethrow());
}
void
@ -74,7 +77,8 @@ void
ModuleScript::SetModuleRecord(JS::Handle<JSObject*> aModuleRecord)
{
MOZ_ASSERT(!mModuleRecord);
MOZ_ASSERT(mError.isUndefined());
MOZ_ASSERT(!HasParseError());
MOZ_ASSERT(!HasErrorToRethrow());
mModuleRecord = aModuleRecord;
@ -85,37 +89,24 @@ ModuleScript::SetModuleRecord(JS::Handle<JSObject*> aModuleRecord)
}
void
ModuleScript::SetPreInstantiationError(const JS::Value& aError)
ModuleScript::SetParseError(const JS::Value& aError)
{
MOZ_ASSERT(!aError.isUndefined());
MOZ_ASSERT(!HasParseError());
MOZ_ASSERT(!HasErrorToRethrow());
UnlinkModuleRecord();
mError = aError;
mParseError = aError;
HoldJSObjects(this);
}
bool
ModuleScript::IsErrored() const
void
ModuleScript::SetErrorToRethrow(const JS::Value& aError)
{
if (!mModuleRecord) {
MOZ_ASSERT(!mError.isUndefined());
return true;
}
MOZ_ASSERT(!aError.isUndefined());
MOZ_ASSERT(!HasErrorToRethrow());
return JS::IsModuleErrored(mModuleRecord);
}
JS::Value
ModuleScript::Error() const
{
MOZ_ASSERT(IsErrored());
if (!mModuleRecord) {
return mError;
}
return JS::GetModuleError(mModuleRecord);
mErrorToRethrow = aError;
}
} // dom namespace