dom/xslt/xpath/txSingleNodeContext.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef __TX_XPATH_SINGLENODE_CONTEXT
   7 #define __TX_XPATH_SINGLENODE_CONTEXT
   8
   9 #include "mozilla/Attributes.h"
  10 #include "txIXPathContext.h"
  11
  12 class txSingleNodeContext : public txIEvalContext {
  13  public:
  14   txSingleNodeContext(const txXPathNode& aContextNode,
  15                       txIMatchContext* aContext)
  16       : mNode(aContextNode), mInner(aContext) {
  17     NS_ASSERTION(aContext, "txIMatchContext must be given");
  18   }
  19
  20   nsresult getVariable(int32_t aNamespace, nsAtom* aLName,
  21                        txAExprResult*& aResult) override {
  22     NS_ASSERTION(mInner, "mInner is null!!!");
  23     return mInner->getVariable(aNamespace, aLName, aResult);
  24   }
  25
  26   nsresult isStripSpaceAllowed(const txXPathNode& aNode,
  27                                bool& aAllowed) override {
  28     NS_ASSERTION(mInner, "mInner is null!!!");
  29     return mInner->isStripSpaceAllowed(aNode, aAllowed);
  30   }
  31
  32   void* getPrivateContext() override {
  33     NS_ASSERTION(mInner, "mInner is null!!!");
  34     return mInner->getPrivateContext();
  35   }
  36
  37   txResultRecycler* recycler() override {
  38     NS_ASSERTION(mInner, "mInner is null!!!");
  39     return mInner->recycler();
  40   }
  41
  42   void receiveError(const nsAString& aMsg, nsresult aRes) override {
  43     NS_ASSERTION(mInner, "mInner is null!!!");
  44 #ifdef DEBUG
  45     nsAutoString error(u"forwarded error: "_ns);
  46     error.Append(aMsg);
  47     mInner->receiveError(error, aRes);
  48 #else
  49     mInner->receiveError(aMsg, aRes);
  50 #endif
  51   }
  52
  53   const txXPathNode& getContextNode() override { return mNode; }
  54
  55   uint32_t size() override { return 1; }
  56
  57   uint32_t position() override { return 1; }
  58
  59  private:
  60   const txXPathNode& mNode;
  61   txIMatchContext* mInner;
  62 };
  63
  64 #endif  // __TX_XPATH_SINGLENODE_CONTEXT