dom/script/LoadedScript.h
author Cosmin Sabou <csabou@mozilla.com>
Sat, 02 Mar 2019 20:40:01 +0200
changeset 462132 bf3cbcc825276823afba2778333cf62cfa75039c
parent 456406 28f22df25f1b61b547a1519e26d2865037f3bb66
permissions -rw-r--r--
Backed out 16 changesets (bug 827976) for causing bug 1532054. a=backout Backed out changeset 54c0b12443ed (bug 827976) Backed out changeset 92b45080d080 (bug 827976) Backed out changeset 443087a359f9 (bug 827976) Backed out changeset f976c2d4cebb (bug 827976) Backed out changeset 66cffb171024 (bug 827976) Backed out changeset 845e1d0b2402 (bug 827976) Backed out changeset fd94066a1d76 (bug 827976) Backed out changeset e253b264e7bd (bug 827976) Backed out changeset 07ef335770a8 (bug 827976) Backed out changeset 9d3805d77b99 (bug 827976) Backed out changeset eed600ceb606 (bug 827976) Backed out changeset 3b64368cff52 (bug 827976) Backed out changeset 69d0378e0c09 (bug 827976) Backed out changeset 9203871a5c6f (bug 827976) Backed out changeset 96a507c818e2 (bug 827976) Backed out changeset e254496ff95b (bug 827976)

/* -*- 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/. */

#ifndef mozilla_dom_LoadedScript_h
#define mozilla_dom_LoadedScript_h

#include "nsCOMPtr.h"
#include "nsCycleCollectionParticipant.h"
#include "jsapi.h"
#include "ScriptLoadRequest.h"

class nsIURI;

namespace mozilla {
namespace dom {

class ScriptLoader;

void HostAddRefTopLevelScript(const JS::Value& aPrivate);
void HostReleaseTopLevelScript(const JS::Value& aPrivate);

class ClassicScript;
class ModuleScript;

class LoadedScript : public nsISupports {
  ScriptKind mKind;
  RefPtr<ScriptFetchOptions> mFetchOptions;
  nsCOMPtr<nsIURI> mBaseURL;

 protected:
  LoadedScript(ScriptKind aKind, ScriptFetchOptions* aFetchOptions,
               nsIURI* aBaseURL);

  virtual ~LoadedScript();

 public:
  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(LoadedScript)

  bool IsModuleScript() const { return mKind == ScriptKind::eModule; }

  inline ClassicScript* AsClassicScript();
  inline ModuleScript* AsModuleScript();

  ScriptFetchOptions* FetchOptions() const { return mFetchOptions; }
  nsIURI* BaseURL() const { return mBaseURL; }

  void AssociateWithScript(JSScript* aScript);
};

class ClassicScript final : public LoadedScript {
  ~ClassicScript() = default;

 public:
  ClassicScript(ScriptFetchOptions* aFetchOptions, nsIURI* aBaseURL);
};

// A single module script. May be used to satisfy multiple load requests.

class ModuleScript final : public LoadedScript {
  JS::Heap<JSObject*> mModuleRecord;
  JS::Heap<JS::Value> mParseError;
  JS::Heap<JS::Value> mErrorToRethrow;
  bool mDebuggerDataInitialized;

  ~ModuleScript();

 public:
  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(ModuleScript,
                                                         LoadedScript)

  ModuleScript(ScriptFetchOptions* aFetchOptions, nsIURI* aBaseURL);

  void SetModuleRecord(JS::Handle<JSObject*> aModuleRecord);
  void SetParseError(const JS::Value& aError);
  void SetErrorToRethrow(const JS::Value& aError);
  void SetDebuggerDataInitialized();

  JSObject* ModuleRecord() const { return mModuleRecord; }

  JS::Value ParseError() const { return mParseError; }
  JS::Value ErrorToRethrow() const { return mErrorToRethrow; }
  bool HasParseError() const { return !mParseError.isUndefined(); }
  bool HasErrorToRethrow() const { return !mErrorToRethrow.isUndefined(); }
  bool DebuggerDataInitialized() const { return mDebuggerDataInitialized; }

  void UnlinkModuleRecord();

  friend void CheckModuleScriptPrivate(LoadedScript*, const JS::Value&);
};

ClassicScript* LoadedScript::AsClassicScript() {
  MOZ_ASSERT(!IsModuleScript());
  return static_cast<ClassicScript*>(this);
}

ModuleScript* LoadedScript::AsModuleScript() {
  MOZ_ASSERT(IsModuleScript());
  return static_cast<ModuleScript*>(this);
}

}  // namespace dom
}  // namespace mozilla

#endif  // mozilla_dom_LoadedScript_h