зеркало из https://github.com/mozilla/gecko-dev.git
125 строки
3.2 KiB
C++
125 строки
3.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ModuleScript.h"
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#include "mozilla/HoldDropJSObjects.h"
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#include "ScriptLoader.h"
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namespace mozilla {
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namespace dom {
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// A single module script. May be used to satisfy multiple load requests.
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ModuleScript)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTION_CLASS(ModuleScript)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(ModuleScript)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mLoader)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mBaseURL)
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tmp->UnlinkScript();
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tmp->mParseError.setUndefined();
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tmp->mErrorToRethrow.setUndefined();
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(ModuleScript)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLoader)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(ModuleScript)
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NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mScript)
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NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mParseError)
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NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mErrorToRethrow)
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NS_IMPL_CYCLE_COLLECTION_TRACE_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(ModuleScript)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(ModuleScript)
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ModuleScript::ModuleScript(ScriptLoader* aLoader, nsIURI* aBaseURL)
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: mLoader(aLoader),
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mBaseURL(aBaseURL),
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mSourceElementAssociated(false)
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{
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MOZ_ASSERT(mLoader);
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MOZ_ASSERT(mBaseURL);
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MOZ_ASSERT(!mScript);
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MOZ_ASSERT(!HasParseError());
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MOZ_ASSERT(!HasErrorToRethrow());
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}
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void
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ModuleScript::UnlinkScript()
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{
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// Remove module's back reference to this object request if present.
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if (mScript) {
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MOZ_ASSERT(JS::GetTopLevelScriptPrivate(mScript) == this);
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JS::SetTopLevelScriptPrivate(mScript, nullptr);
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mScript = nullptr;
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}
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}
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ModuleScript::~ModuleScript()
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{
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// The object may be destroyed without being unlinked first.
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UnlinkScript();
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DropJSObjects(this);
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}
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void
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ModuleScript::SetScript(JS::Handle<JSScript*> aScript)
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{
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MOZ_ASSERT(!mScript);
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MOZ_ASSERT(!HasParseError());
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MOZ_ASSERT(!HasErrorToRethrow());
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mScript = aScript;
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// Make module's host defined field point to this module script object.
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// This is cleared in the UnlinkScript().
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MOZ_ASSERT(!JS::GetTopLevelScriptPrivate(mScript));
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JS::SetTopLevelScriptPrivate(mScript, this);
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HoldJSObjects(this);
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}
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void
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ModuleScript::SetParseError(const JS::Value& aError)
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{
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MOZ_ASSERT(!aError.isUndefined());
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MOZ_ASSERT(!HasParseError());
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MOZ_ASSERT(!HasErrorToRethrow());
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UnlinkScript();
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mParseError = aError;
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HoldJSObjects(this);
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}
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void
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ModuleScript::SetErrorToRethrow(const JS::Value& aError)
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{
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MOZ_ASSERT(!aError.isUndefined());
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MOZ_ASSERT(!HasErrorToRethrow());
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// This is only called after SetScript() or SetParseError() so we don't
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// need to call HoldJSObjects() here.
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MOZ_ASSERT(mScript || HasParseError());
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mErrorToRethrow = aError;
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}
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void
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ModuleScript::SetSourceElementAssociated()
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{
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MOZ_ASSERT(mScript);
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MOZ_ASSERT(!mSourceElementAssociated);
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mSourceElementAssociated = true;
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}
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} // dom namespace
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} // mozilla namespace
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