gecko-dev/dom/xml/ProcessingInstruction.cpp

/* -*- 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/. */

#include "nsGkAtoms.h"
#include "nsUnicharUtils.h"
#include "mozilla/dom/LinkStyle.h"
#include "mozilla/dom/ProcessingInstruction.h"
#include "mozilla/dom/ProcessingInstructionBinding.h"
#include "mozilla/dom/XMLStylesheetProcessingInstruction.h"
#include "mozilla/IntegerPrintfMacros.h"
#include "nsContentUtils.h"

already_AddRefed<mozilla::dom::ProcessingInstruction>
NS_NewXMLProcessingInstruction(nsNodeInfoManager* aNodeInfoManager,
                               const nsAString& aTarget,
                               const nsAString& aData) {
  using mozilla::dom::ProcessingInstruction;
  using mozilla::dom::XMLStylesheetProcessingInstruction;

  MOZ_ASSERT(aNodeInfoManager, "Missing nodeinfo manager");

  RefPtr<nsAtom> target = NS_Atomize(aTarget);
  MOZ_ASSERT(target);

  if (target == nsGkAtoms::xml_stylesheet) {
    RefPtr<XMLStylesheetProcessingInstruction> pi = new (aNodeInfoManager)
        XMLStylesheetProcessingInstruction(aNodeInfoManager, aData);
    return pi.forget();
  }

  RefPtr<mozilla::dom::NodeInfo> ni;
  ni = aNodeInfoManager->GetNodeInfo(
      nsGkAtoms::processingInstructionTagName, nullptr, kNameSpaceID_None,
      nsINode::PROCESSING_INSTRUCTION_NODE, target);

  RefPtr<ProcessingInstruction> instance =
      new (aNodeInfoManager) ProcessingInstruction(ni.forget(), aData);

  return instance.forget();
}

namespace mozilla::dom {

ProcessingInstruction::ProcessingInstruction(
    already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
    const nsAString& aData)
    : CharacterData(std::move(aNodeInfo)) {
  MOZ_ASSERT(mNodeInfo->NodeType() == nsINode::PROCESSING_INSTRUCTION_NODE,
             "Bad NodeType in aNodeInfo");

  SetTextInternal(0, mText.GetLength(), aData.BeginReading(), aData.Length(),
                  false);  // Don't notify (bug 420429).
}

ProcessingInstruction::~ProcessingInstruction() = default;

StyleSheet* ProcessingInstruction::GetSheetForBindings() const {
  if (const auto* linkStyle = LinkStyle::FromNode(*this)) {
    return linkStyle->GetSheetForBindings();
  }
  return nullptr;
}

JSObject* ProcessingInstruction::WrapNode(JSContext* aCx,
                                          JS::Handle<JSObject*> aGivenProto) {
  return ProcessingInstruction_Binding::Wrap(aCx, this, aGivenProto);
}

bool ProcessingInstruction::GetAttrValue(nsAtom* aName, nsAString& aValue) {
  nsAutoString data;

  GetData(data);
  return nsContentUtils::GetPseudoAttributeValue(data, aName, aValue);
}

already_AddRefed<CharacterData> ProcessingInstruction::CloneDataNode(
    mozilla::dom::NodeInfo* aNodeInfo, bool aCloneText) const {
  nsAutoString data;
  GetData(data);
  RefPtr<mozilla::dom::NodeInfo> ni = aNodeInfo;
  auto* nim = ni->NodeInfoManager();
  return do_AddRef(new (nim) ProcessingInstruction(ni.forget(), data));
}

#ifdef MOZ_DOM_LIST
void ProcessingInstruction::List(FILE* out, int32_t aIndent) const {
  int32_t index;
  for (index = aIndent; --index >= 0;) fputs("  ", out);

  fprintf(out, "Processing instruction refcount=%" PRIuPTR "<", mRefCnt.get());

  nsAutoString tmp;
  ToCString(tmp, 0, mText.GetLength());
  tmp.Insert(nsDependentAtomString(NodeInfo()->GetExtraName()).get(), 0);
  fputs(NS_LossyConvertUTF16toASCII(tmp).get(), out);

  fputs(">\n", out);
}

void ProcessingInstruction::DumpContent(FILE* out, int32_t aIndent,
                                        bool aDumpAll) const {}
#endif

}  // namespace mozilla::dom