dom/xslt/xpath/txNodeTypeTest.cpp

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   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 #include "txExpr.h"
   7 #include "nsIAtom.h"
   8 #include "txIXPathContext.h"
   9 #include "txXPathTreeWalker.h"
  10
  11 bool txNodeTypeTest::matches(const txXPathNode& aNode,
  12                                txIMatchContext* aContext)
  13 {
  14     switch (mNodeType) {
  15         case COMMENT_TYPE:
  16         {
  17             return txXPathNodeUtils::isComment(aNode);
  18         }
  19         case TEXT_TYPE:
  20         {
  21             return txXPathNodeUtils::isText(aNode) &&
  22                    !aContext->isStripSpaceAllowed(aNode);
  23         }
  24         case PI_TYPE:
  25         {
  26             return txXPathNodeUtils::isProcessingInstruction(aNode) &&
  27                    (!mNodeName ||
  28                     txXPathNodeUtils::localNameEquals(aNode, mNodeName));
  29         }
  30         case NODE_TYPE:
  31         {
  32             return !txXPathNodeUtils::isText(aNode) ||
  33                    !aContext->isStripSpaceAllowed(aNode);
  34         }
  35     }
  36     return true;
  37 }
  38
  39 txNodeTest::NodeTestType
  40 txNodeTypeTest::getType()
  41 {
  42     return NODETYPE_TEST;
  43 }
  44
  45 /*
  46  * Returns the default priority of this txNodeTest
  47  */
  48 double txNodeTypeTest::getDefaultPriority()
  49 {
  50     return mNodeName ? 0 : -0.5;
  51 }
  52
  53 bool
  54 txNodeTypeTest::isSensitiveTo(Expr::ContextSensitivity aContext)
  55 {
  56     return !!(aContext & Expr::NODE_CONTEXT);
  57 }
  58
  59 #ifdef TX_TO_STRING
  60 void
  61 txNodeTypeTest::toString(nsAString& aDest)
  62 {
  63     switch (mNodeType) {
  64         case COMMENT_TYPE:
  65             aDest.AppendLiteral("comment()");
  66             break;
  67         case TEXT_TYPE:
  68             aDest.AppendLiteral("text()");
  69             break;
  70         case PI_TYPE:
  71             aDest.AppendLiteral("processing-instruction(");
  72             if (mNodeName) {
  73                 nsAutoString str;
  74                 mNodeName->ToString(str);
  75                 aDest.Append(char16_t('\''));
  76                 aDest.Append(str);
  77                 aDest.Append(char16_t('\''));
  78             }
  79             aDest.Append(char16_t(')'));
  80             break;
  81         case NODE_TYPE:
  82             aDest.AppendLiteral("node()");
  83             break;
  84     }
  85 }
  86 #endif