Vinod Kumar S | 9f26ae5 | 2016-03-23 15:30:27 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package org.onosproject.yangutils.translator.tojava; |
| 18 | |
| 19 | import java.io.IOException; |
| 20 | |
| 21 | import org.onosproject.yangutils.datamodel.YangNode; |
| 22 | |
| 23 | /** |
| 24 | * Implementation of Java code generator based on application schema. |
| 25 | */ |
| 26 | public final class JavaCodeGeneratorUtil { |
| 27 | |
| 28 | /** |
| 29 | * Default constructor. |
| 30 | */ |
| 31 | private JavaCodeGeneratorUtil() { |
| 32 | } |
| 33 | |
| 34 | /** |
| 35 | * Generate Java code files corresponding to the YANG schema. |
| 36 | * |
| 37 | * @param rootNode root node of the data model tree |
| 38 | * @param codeGenDir code generation directory |
| 39 | * @throws IOException when fails to generate java code file the current |
| 40 | * node |
| 41 | */ |
| 42 | public static void generateJavaCode(YangNode rootNode, String codeGenDir) throws IOException { |
| 43 | YangNode curNode = rootNode; |
| 44 | TraversalType curTraversal = TraversalType.ROOT; |
| 45 | |
| 46 | while (!(curNode == null)) { |
| 47 | if (curTraversal != TraversalType.PARENT) { |
| 48 | generateCodeEntry(curNode, codeGenDir); |
| 49 | } |
| 50 | if (curTraversal != TraversalType.PARENT && curNode.getChild() != null) { |
| 51 | curTraversal = TraversalType.CHILD; |
| 52 | curNode = curNode.getChild(); |
| 53 | } else if (curNode.getNextSibling() != null) { |
| 54 | generateCodeExit(curNode); |
| 55 | curTraversal = TraversalType.SIBILING; |
| 56 | curNode = curNode.getNextSibling(); |
| 57 | } else { |
| 58 | generateCodeExit(curNode); |
| 59 | curTraversal = TraversalType.PARENT; |
| 60 | curNode = curNode.getParent(); |
| 61 | } |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * Generates the current nodes code snippet. |
| 67 | * |
| 68 | * @param curNode current data model node for which the code needs to be |
| 69 | * generated |
| 70 | * @param codeGenDir the base directory where the code needs to be generated |
| 71 | * @throws IOException IO operation exception |
| 72 | */ |
| 73 | private static void generateCodeEntry(YangNode curNode, |
| 74 | String codeGenDir) throws IOException { |
| 75 | |
| 76 | if (curNode instanceof JavaCodeGenerator) { |
| 77 | ((JavaCodeGenerator) curNode).generateCodeEntry(codeGenDir); |
| 78 | } else { |
| 79 | throw new RuntimeException( |
| 80 | "Gnenerated data model node cannot be translated to target language code"); |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * Generates the current nodes code target code from the snippet. |
| 86 | * |
| 87 | * @param curNode current data model node for which the code needs to be |
| 88 | * generated |
| 89 | * @throws IOException IO operation exception |
| 90 | */ |
| 91 | private static void generateCodeExit(YangNode curNode) throws IOException { |
| 92 | |
| 93 | if (curNode instanceof JavaCodeGenerator) { |
| 94 | ((JavaCodeGenerator) curNode).generateCodeExit(); |
| 95 | } else { |
| 96 | throw new RuntimeException( |
| 97 | "Gnenerated data model node cannot be translated to target language code"); |
| 98 | } |
| 99 | } |
| 100 | } |