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C++ txXPathNode::isContent方法代码示例

本文整理汇总了C++中txXPathNode::isContent方法的典型用法代码示例。如果您正苦于以下问题:C++ txXPathNode::isContent方法的具体用法?C++ txXPathNode::isContent怎么用?C++ txXPathNode::isContent使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在txXPathNode的用法示例。


在下文中一共展示了txXPathNode::isContent方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: while

/* static */
int
txXPathNodeUtils::comparePosition(const txXPathNode& aNode,
                                  const txXPathNode& aOtherNode)
{
    // First check for equal nodes or attribute-nodes on the same element.
    if (aNode.mNode == aOtherNode.mNode) {
        if (aNode.mIndex == aOtherNode.mIndex) {
            return 0;
        }

        NS_ASSERTION(!aNode.isDocument() && !aOtherNode.isDocument(),
                     "documents should always have a set index");

        if (aNode.isContent() || (!aOtherNode.isContent() &&
                                  aNode.mIndex < aOtherNode.mIndex)) {
            return -1;
        }

        return 1;
    }

    // Get document for both nodes.
    nsIDocument* document = aNode.mNode->GetCurrentDoc();
    nsIDocument* otherDocument = aOtherNode.mNode->GetCurrentDoc();

    // If the nodes have different current documents, compare the document
    // pointers.
    if (document != otherDocument) {
        return document < otherDocument ? -1 : 1;
    }

    // Now either both nodes are in orphan trees, or they are both in the
    // same tree.

    // Get parents up the tree.
    nsAutoTArray<nsINode*, 8> parents, otherParents;
    nsINode* node = aNode.mNode;
    nsINode* otherNode = aOtherNode.mNode;
    nsINode* parent, *otherParent;
    while (node && otherNode) {
        parent = node->GetParentNode();
        otherParent = otherNode->GetParentNode();

        // Hopefully this is a common case.
        if (parent == otherParent) {
            if (!parent) {
                // Both node and otherNode are root nodes in respective orphan
                // tree.
                return node < otherNode ? -1 : 1;
            }

            return parent->IndexOf(node) < parent->IndexOf(otherNode) ?
                   -1 : 1;
        }

        parents.AppendElement(node);
        otherParents.AppendElement(otherNode);
        node = parent;
        otherNode = otherParent;
    }

    while (node) {
        parents.AppendElement(node);
        node = node->GetParentNode();
    }
    while (otherNode) {
        otherParents.AppendElement(otherNode);
        otherNode = otherNode->GetParentNode();
    }

    // Walk back down along the parent-chains until we find where they split.
    int32_t total = parents.Length() - 1;
    int32_t otherTotal = otherParents.Length() - 1;
    NS_ASSERTION(total != otherTotal, "Can't have same number of parents");

    int32_t lastIndex = std::min(total, otherTotal);
    int32_t i;
    parent = nullptr;
    for (i = 0; i <= lastIndex; ++i) {
        node = parents.ElementAt(total - i);
        otherNode = otherParents.ElementAt(otherTotal - i);
        if (node != otherNode) {
            if (!parent) {
                // The two nodes are in different orphan subtrees.
                NS_ASSERTION(i == 0, "this shouldn't happen");
                return node < otherNode ? -1 : 1;
            }

            int32_t index = parent->IndexOf(node);
            int32_t otherIndex = parent->IndexOf(otherNode);
            NS_ASSERTION(index != otherIndex && index >= 0 && otherIndex >= 0,
                         "invalid index in compareTreePosition");

            return index < otherIndex ? -1 : 1;
        }

        parent = node;
    }

//.........这里部分代码省略.........
开发者ID:aeddi,项目名称:gecko-dev,代码行数:101,代码来源:txMozillaXPathTreeWalker.cpp


注:本文中的txXPathNode::isContent方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。