2 * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.yangtools.yang.parser.builder.impl;
10 import com.google.common.base.Splitter;
11 import java.util.Comparator;
12 import java.util.Date;
13 import java.util.Iterator;
16 import java.util.TreeMap;
17 import org.opendaylight.yangtools.yang.parser.builder.api.Builder;
18 import org.opendaylight.yangtools.yang.parser.builder.api.DataNodeContainerBuilder;
19 import org.opendaylight.yangtools.yang.parser.builder.api.DataSchemaNodeBuilder;
20 import org.opendaylight.yangtools.yang.parser.builder.api.GroupingBuilder;
21 import org.opendaylight.yangtools.yang.parser.builder.api.RefineBuilder;
22 import org.opendaylight.yangtools.yang.parser.builder.api.UsesNodeBuilder;
23 import org.opendaylight.yangtools.yang.parser.util.YangParseException;
25 public final class GroupingUtils {
26 private static final Splitter COLON_SPLITTER = Splitter.on(':');
27 private static final Splitter SLASH_SPLITTER = Splitter.on('/');
29 private GroupingUtils() {
33 * Common string splitter. Given a string representation of a grouping's
34 * name, it creates a prefix/name pair and returns it.
36 * @param groupingString
37 * Grouping string reference
39 * Module which we are processing
41 * Module line which we are processing
42 * @return An array of two strings, first one is the module prefix, the
43 * second is the grouping name.
45 private static String[] getPrefixAndName(final String groupingString, final ModuleBuilder module, final int line) {
46 final String[] ret = new String[2];
48 if (groupingString.indexOf(':') != -1) {
49 if (groupingString.indexOf('/') != -1) {
50 throw new YangParseException(module.getName(), line, "Invalid name of target grouping");
53 final Iterator<String> split = COLON_SPLITTER.split(groupingString).iterator();
54 ret[0] = split.next();
55 ret[1] = split.next();
56 if (split.hasNext()) {
57 throw new YangParseException(module.getName(), line, "Invalid name of target grouping");
60 ret[0] = module.getPrefix();
61 ret[1] = groupingString;
68 * Search given modules for grouping by name defined in uses node.
71 * builder of uses statement
76 * @return grouping with given name if found, null otherwise
78 public static GroupingBuilder getTargetGroupingFromModules(final UsesNodeBuilder usesBuilder,
79 final Map<String, TreeMap<Date, ModuleBuilder>> modules, final ModuleBuilder module) {
80 final int line = usesBuilder.getLine();
82 final String[] split = getPrefixAndName(usesBuilder.getGroupingPathAsString(), module, line);
83 final String groupingPrefix = split[0];
84 final String groupingName = split[1];
85 final ModuleBuilder dependentModule;
87 if (groupingPrefix == null) {
88 dependentModule = module;
89 } else if (groupingPrefix.equals(module.getPrefix())) {
90 dependentModule = module;
92 dependentModule = BuilderUtils.findModuleFromBuilders(modules, module, groupingPrefix, line);
95 if (dependentModule == null) {
99 Set<GroupingBuilder> groupings = dependentModule.getGroupingBuilders();
100 GroupingBuilder result = findGroupingBuilder(groupings, groupingName);
101 if (result != null) {
105 Builder parent = usesBuilder.getParent();
106 while (parent != null) {
107 if (parent instanceof DataNodeContainerBuilder) {
108 groupings = ((DataNodeContainerBuilder) parent).getGroupingBuilders();
109 } else if (parent instanceof RpcDefinitionBuilder) {
110 groupings = ((RpcDefinitionBuilder) parent).getGroupings();
112 result = findGroupingBuilder(groupings, groupingName);
113 if (result == null) {
114 parent = parent.getParent();
120 if (result == null) {
121 throw new YangParseException(module.getName(), line, "Grouping '" + groupingName + "' not found.");
127 * Find grouping by name.
130 * collection of grouping builders to search
133 * @return grouping with given name if present in collection, null otherwise
135 private static GroupingBuilder findGroupingBuilder(final Set<GroupingBuilder> groupings, final String name) {
136 for (GroupingBuilder grouping : groupings) {
137 if (grouping.getQName().getLocalName().equals(name)) {
145 * Perform refinement of uses target grouping nodes. Uses process has to be
149 * uses node containing refine statements
151 public static void performRefine(final UsesNodeBuilder usesNode) {
152 for (RefineBuilder refine : usesNode.getRefines()) {
153 String refineTargetPath = refine.getTargetPathString();
155 Builder currentNode = usesNode.getParent();
156 for (String pathElement : SLASH_SPLITTER.split(refineTargetPath)) {
157 if (currentNode instanceof DataNodeContainerBuilder) {
158 currentNode = ((DataNodeContainerBuilder) currentNode).getDataChildByName(pathElement);
159 } else if (currentNode instanceof ChoiceBuilder) {
160 currentNode = ((ChoiceBuilder) currentNode).getCaseNodeByName(pathElement);
164 DataSchemaNodeBuilder nodeToRefine = (DataSchemaNodeBuilder) currentNode;
165 if (nodeToRefine == null) {
166 throw new YangParseException(refine.getModuleName(), refine.getLine(), "Refine target node '"
167 + refine.getTargetPathString() + "' not found");
169 RefineUtils.performRefine(nodeToRefine, refine);
170 usesNode.addRefineNode(nodeToRefine);
174 public static class UsesComparator implements Comparator<UsesNodeBuilder> {
176 public int compare(final UsesNodeBuilder o1, final UsesNodeBuilder o2) {
177 return getElementPosition(o2) - getElementPosition(o1);
181 private static int getElementPosition(final UsesNodeBuilder usesNode) {
183 Builder parent = usesNode.getParent();
184 while (!(parent instanceof ModuleBuilder)) {
185 parent = parent.getParent();