dom/xslt/xpath/txNodeTypeTest.cpp

   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 #include "txExpr.h"
   7 #include "nsAtom.h"
   8 #include "txIXPathContext.h"
   9 #include "txXPathTreeWalker.h"
  10
  11 nsresult txNodeTypeTest::matches(const txXPathNode& aNode,
  12                                  txIMatchContext* aContext, bool& aMatched) {
  13   switch (mNodeType) {
  14     case COMMENT_TYPE: {
  15       aMatched = txXPathNodeUtils::isComment(aNode);
  16       return NS_OK;
  17     }
  18     case TEXT_TYPE: {
  19       aMatched = txXPathNodeUtils::isText(aNode);
  20       if (aMatched) {
  21         bool allowed;
  22         nsresult rv = aContext->isStripSpaceAllowed(aNode, allowed);
  23         NS_ENSURE_SUCCESS(rv, rv);
  24
  25         aMatched = !allowed;
  26       }
  27       return NS_OK;
  28     }
  29     case PI_TYPE: {
  30       aMatched =
  31           txXPathNodeUtils::isProcessingInstruction(aNode) &&
  32           (!mNodeName || txXPathNodeUtils::localNameEquals(aNode, mNodeName));
  33       return NS_OK;
  34     }
  35     case NODE_TYPE: {
  36       if (txXPathNodeUtils::isText(aNode)) {
  37         bool allowed;
  38         nsresult rv = aContext->isStripSpaceAllowed(aNode, allowed);
  39         NS_ENSURE_SUCCESS(rv, rv);
  40
  41         aMatched = !allowed;
  42       } else {
  43         aMatched = true;
  44       }
  45       return NS_OK;
  46     }
  47   }
  48
  49   MOZ_ASSERT_UNREACHABLE("Didn't deal with all values of the NodeType enum!");
  50
  51   aMatched = false;
  52   return NS_OK;
  53 }
  54
  55 txNodeTest::NodeTestType txNodeTypeTest::getType() { return NODETYPE_TEST; }
  56
  57 /*
  58  * Returns the default priority of this txNodeTest
  59  */
  60 double txNodeTypeTest::getDefaultPriority() { return mNodeName ? 0 : -0.5; }
  61
  62 bool txNodeTypeTest::isSensitiveTo(Expr::ContextSensitivity aContext) {
  63   return !!(aContext & Expr::NODE_CONTEXT);
  64 }
  65
  66 #ifdef TX_TO_STRING
  67 void txNodeTypeTest::toString(nsAString& aDest) {
  68   switch (mNodeType) {
  69     case COMMENT_TYPE:
  70       aDest.AppendLiteral("comment()");
  71       break;
  72     case TEXT_TYPE:
  73       aDest.AppendLiteral("text()");
  74       break;
  75     case PI_TYPE:
  76       aDest.AppendLiteral("processing-instruction(");
  77       if (mNodeName) {
  78         nsAutoString str;
  79         mNodeName->ToString(str);
  80         aDest.Append(char16_t('\''));
  81         aDest.Append(str);
  82         aDest.Append(char16_t('\''));
  83       }
  84       aDest.Append(char16_t(')'));
  85       break;
  86     case NODE_TYPE:
  87       aDest.AppendLiteral("node()");
  88       break;
  89   }
  90 }
  91 #endif