tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

nsScriptError.h (4321B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
      5 * You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #ifndef mozilla_dom_nsScriptError_h
      8 #define mozilla_dom_nsScriptError_h
      9 
     10 #include <stdint.h>
     11 
     12 #include "js/RootingAPI.h"
     13 #include "jsapi.h"
     14 #include "mozilla/Atomics.h"
     15 #include "nsCOMArray.h"
     16 #include "nsCycleCollectionParticipant.h"
     17 #include "nsIScriptError.h"
     18 #include "nsString.h"
     19 
     20 class nsGlobalWindowInner;
     21 
     22 class nsScriptErrorNote final : public nsIScriptErrorNote {
     23 public:
     24  nsScriptErrorNote();
     25 
     26  NS_DECL_THREADSAFE_ISUPPORTS
     27  NS_DECL_NSISCRIPTERRORNOTE
     28 
     29  void Init(const nsAString& message, const nsACString& sourceName,
     30            uint32_t sourceId, uint32_t lineNumber, uint32_t columnNumber);
     31 
     32 private:
     33  virtual ~nsScriptErrorNote();
     34 
     35  nsString mMessage;
     36  nsCString mSourceName;
     37  nsString mCssSelectors;
     38  uint32_t mSourceId;
     39  uint32_t mLineNumber;
     40  uint32_t mColumnNumber;
     41 };
     42 
     43 // Definition of nsScriptError..
     44 class nsScriptErrorBase : public nsIScriptError {
     45 public:
     46  nsScriptErrorBase();
     47 
     48  NS_DECL_NSICONSOLEMESSAGE
     49  NS_DECL_NSISCRIPTERROR
     50 
     51  void AddNote(nsIScriptErrorNote* note);
     52 
     53  static bool ComputeIsFromPrivateWindow(nsGlobalWindowInner* aWindow);
     54 
     55  static bool ComputeIsFromChromeContext(nsGlobalWindowInner* aWindow);
     56 
     57 protected:
     58  virtual ~nsScriptErrorBase();
     59 
     60  void InitializeOnMainThread();
     61 
     62  void InitializationHelper(const nsAString& message, uint32_t lineNumber,
     63                            uint32_t columnNumber, uint32_t flags,
     64                            const nsACString& category, uint64_t aInnerWindowID,
     65                            bool aFromChromeContext);
     66 
     67  nsCOMArray<nsIScriptErrorNote> mNotes;
     68  nsString mMessage;
     69  nsString mMessageName;
     70  nsCString mSourceName;
     71  nsString mCssSelectors;
     72  uint32_t mSourceId;
     73  uint32_t mLineNumber;
     74  uint32_t mColumnNumber;
     75  uint32_t mFlags;
     76  nsCString mCategory;
     77  // mOuterWindowID is set on the main thread from InitializeOnMainThread().
     78  uint64_t mOuterWindowID;
     79  uint64_t mInnerWindowID;
     80  int64_t mMicroSecondTimeStamp;
     81  // mInitializedOnMainThread, mIsFromPrivateWindow and mIsFromChromeContext are
     82  // set on the main thread from InitializeOnMainThread().
     83  mozilla::Atomic<bool> mInitializedOnMainThread;
     84  bool mIsFromPrivateWindow;
     85  bool mIsFromChromeContext;
     86  bool mIsPromiseRejection;
     87  bool mIsForwardedFromContentProcess;
     88 };
     89 
     90 class nsScriptError final : public nsScriptErrorBase {
     91 public:
     92  nsScriptError() = default;
     93  NS_DECL_THREADSAFE_ISUPPORTS
     94 
     95 private:
     96  virtual ~nsScriptError() = default;
     97 };
     98 
     99 class nsScriptErrorWithStack : public nsScriptErrorBase {
    100 public:
    101  nsScriptErrorWithStack(JS::Handle<mozilla::Maybe<JS::Value>> aException,
    102                         JS::Handle<JSObject*> aStack,
    103                         JS::Handle<JSObject*> aStackGlobal);
    104 
    105  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
    106  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(nsScriptErrorWithStack)
    107 
    108  NS_IMETHOD GetHasException(bool*) override;
    109  NS_IMETHOD GetException(JS::MutableHandle<JS::Value>) override;
    110 
    111  NS_IMETHOD GetStack(JS::MutableHandle<JS::Value>) override;
    112  NS_IMETHOD GetStackGlobal(JS::MutableHandle<JS::Value>) override;
    113  NS_IMETHOD ToString(nsACString& aResult) override;
    114 
    115 private:
    116  virtual ~nsScriptErrorWithStack();
    117 
    118  // The "exception" value.
    119  JS::Heap<JS::Value> mException;
    120  bool mHasException;
    121 
    122  // Complete stackframe where the error happened.
    123  // Must be a (possibly wrapped) SavedFrame object.
    124  JS::Heap<JSObject*> mStack;
    125  // Global object that must be same-compartment with mStack.
    126  JS::Heap<JSObject*> mStackGlobal;
    127 };
    128 
    129 // Creates either nsScriptErrorWithStack or nsScriptError,
    130 // depending on whether |aStack| or |aException| is passed.
    131 // Additionally when the first (optional) |win| argument is
    132 // provided this function makes sure that the GlobalWindow
    133 // isn't already dying to prevent leaks.
    134 already_AddRefed<nsScriptErrorBase> CreateScriptError(
    135    nsGlobalWindowInner* win, JS::Handle<mozilla::Maybe<JS::Value>> aException,
    136    JS::Handle<JSObject*> aStack, JS::Handle<JSObject*> aStackGlobal);
    137 
    138 #endif /* mozilla_dom_nsScriptError_h */