1 /* 2 * Copyright (C) 2011 The Guava Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 5 * in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the 10 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 11 * express or implied. See the License for the specific language governing permissions and 12 * limitations under the License. 13 */ 14 15 package com.google.common.collect; 16 17 import com.google.common.annotations.GwtCompatible; 18 19 /** 20 * A factory for extending paths in a binary search tree. 21 * 22 * @author Louis Wasserman 23 * @param <N> The type of binary search tree nodes used in the paths generated by this {@code 24 * BstPathFactory}. 25 * @param <P> The type of paths constructed by this {@code BstPathFactory}. 26 */ 27 @GwtCompatible 28 interface BstPathFactory<N extends BstNode<?, N>, P extends BstPath<N, P>> { 29 /** 30 * Returns this path extended by one node to the specified {@code side}. 31 */ 32 P extension(P path, BstSide side); 33 34 /** 35 * Returns the trivial path that starts at {@code root} and goes no further. 36 */ 37 P initialPath(N root); 38 } 39
