tor-browser

The Tor Browser
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NodeUbiReporting.h (2826B)

      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
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #ifndef dom_NodeUbiReporting_h
      8 #define dom_NodeUbiReporting_h
      9 
     10 #include "Attr.h"
     11 #include "Document.h"
     12 #include "js/UbiNode.h"
     13 #include "nsIContent.h"
     14 #include "nsIContentInlines.h"
     15 #include "nsINode.h"
     16 
     17 /*
     18 * This file defines specializations of JS::ubi::Concrete for DOM nodes
     19 * so that the JS memory tools, which operate on the UbiNode graph, can
     20 * define subclasses of JS::ubi::Base that represent DOM nodes and
     21 * yield the outgoing edges in a DOM node graph for reporting.
     22 */
     23 
     24 namespace JS::ubi {
     25 
     26 // The DOM node base class.
     27 // This is an abstract class and therefore does not require a concreteTypeName.
     28 template <>
     29 class Concrete<nsINode> : public Base {
     30 protected:
     31  explicit Concrete(nsINode* ptr) : Base(ptr) {}
     32 
     33 public:
     34  static void construct(void* storage, nsINode* ptr);
     35  Size size(mozilla::MallocSizeOf mallocSizeOf) const override;
     36  js::UniquePtr<EdgeRange> edges(JSContext* cx, bool wantNames) const override;
     37 
     38  nsINode& get() const { return *static_cast<nsINode*>(ptr); }
     39  CoarseType coarseType() const final { return CoarseType::DOMNode; }
     40  const char16_t* descriptiveTypeName() const override;
     41 };
     42 
     43 template <>
     44 class Concrete<nsIContent> : public Concrete<nsINode> {
     45 protected:
     46  explicit Concrete(nsIContent* ptr) : Concrete<nsINode>(ptr) {}
     47 
     48 public:
     49  static void construct(void* storage, nsIContent* ptr) {
     50    new (storage) Concrete(ptr);
     51  }
     52  const char16_t* typeName() const override { return concreteTypeName; };
     53  static const char16_t concreteTypeName[];
     54 };
     55 
     56 template <>
     57 class Concrete<mozilla::dom::Document> : public Concrete<nsINode> {
     58 protected:
     59  explicit Concrete(mozilla::dom::Document* ptr) : Concrete<nsINode>(ptr) {}
     60 
     61 public:
     62  static void construct(void* storage, mozilla::dom::Document* ptr) {
     63    new (storage) Concrete(ptr);
     64  }
     65  Size size(mozilla::MallocSizeOf mallocSizeOf) const override;
     66 
     67  mozilla::dom::Document& getDoc() const {
     68    return *static_cast<mozilla::dom::Document*>(ptr);
     69  }
     70  const char16_t* typeName() const override { return concreteTypeName; };
     71  static const char16_t concreteTypeName[];
     72 };
     73 
     74 template <>
     75 class Concrete<mozilla::dom::Attr> : public Concrete<nsINode> {
     76 protected:
     77  explicit Concrete(mozilla::dom::Attr* ptr) : Concrete<nsINode>(ptr) {}
     78 
     79 public:
     80  static void construct(void* storage, mozilla::dom::Attr* ptr) {
     81    new (storage) Concrete(ptr);
     82  }
     83  const char16_t* typeName() const override { return concreteTypeName; };
     84  static const char16_t concreteTypeName[];
     85 };
     86 
     87 }  // namespace JS::ubi
     88 
     89 #endif