dom/xslt/xpath/txNodeSetContext.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_SET_CONTEXT
   7 #define __TX_XPATH_SET_CONTEXT
   8
   9 #include "txIXPathContext.h"
  10 #include "txNodeSet.h"
  11
  12 class txNodeSetContext : public txIEvalContext {
  13  public:
  14   txNodeSetContext(txNodeSet* aContextNodeSet, txIMatchContext* aContext)
  15       : mContextSet(aContextNodeSet), mPosition(0), mInner(aContext) {}
  16
  17   // Iteration over the given NodeSet
  18   bool hasNext() { return mPosition < size(); }
  19   void next() {
  20     NS_ASSERTION(mPosition < size(), "Out of bounds.");
  21     mPosition++;
  22   }
  23   void setPosition(uint32_t aPosition) {
  24     NS_ASSERTION(aPosition > 0 && aPosition <= size(), "Out of bounds.");
  25     mPosition = aPosition;
  26   }
  27
  28   TX_DECL_EVAL_CONTEXT;
  29
  30  protected:
  31   RefPtr<txNodeSet> mContextSet;
  32   uint32_t mPosition;
  33   txIMatchContext* mInner;
  34 };
  35
  36 #endif  // __TX_XPATH_SET_CONTEXT