Class StringTrieBuilder.BranchHeadNode

java.lang.Object
com.ibm.icu.util.StringTrieBuilder.Node
com.ibm.icu.util.StringTrieBuilder.ValueNode
com.ibm.icu.util.StringTrieBuilder.BranchHeadNode
Enclosing class:
StringTrieBuilder
private static final class StringTrieBuilder.BranchHeadNode extends StringTrieBuilder.ValueNode

  • Field Details

  • Constructor Details

  • Method Details

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class StringTrieBuilder.ValueNode

    • equals

      public boolean equals(Object other)
      Overrides:
      equals in class StringTrieBuilder.ValueNode

    • markRightEdgesFirst

      public int markRightEdgesFirst(int edgeNumber)
      Description copied from class: StringTrieBuilder.Node
      Traverses the Node graph and numbers branch edges, with rightmost edges first. This is to avoid writing a duplicate node twice. Branch nodes in this trie data structure are not symmetric. Most branch edges "jump" to other nodes but the rightmost branch edges just continue without a jump. Therefore, write() must write the rightmost branch edge last (trie units are written backwards), and must write it at that point even if it is a duplicate of a node previously written elsewhere. This function visits and marks right branch edges first. Edges are numbered with increasingly negative values because we share the offset field which gets positive values when nodes are written. A branch edge also remembers the first number for any of its edges. When a further-left branch edge has a number in the range of the rightmost edge's numbers, then it will be written as part of the required right edge and we can avoid writing it first. After root.markRightEdgesFirst(-1) the offsets of all nodes are negative edge numbers.
      Overrides:
      markRightEdgesFirst in class StringTrieBuilder.Node
      Parameters:
      edgeNumber - The first edge number for this node and its sub-nodes.
      Returns:
      An edge number that is at least the maximum-negative of the input edge number and the numbers of this node and all of its sub-nodes.

    • write

      public void write(StringTrieBuilder builder)
      Overrides:
      write in class StringTrieBuilder.ValueNode