2 * Copyright (c) 2015 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.stmt.rfc6020.effective;
10 import com.google.common.collect.ImmutableList;
11 import java.util.ArrayDeque;
12 import java.util.ArrayList;
13 import java.util.Collection;
14 import java.util.Deque;
15 import java.util.List;
16 import java.util.Objects;
17 import javax.annotation.Nonnull;
18 import org.opendaylight.yangtools.yang.common.QName;
19 import org.opendaylight.yangtools.yang.model.api.ExtensionDefinition;
20 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
21 import org.opendaylight.yangtools.yang.model.api.UnknownSchemaNode;
22 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
23 import org.opendaylight.yangtools.yang.model.api.stmt.ExtensionStatement;
24 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
25 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.RecursiveObjectLeaker;
27 public class ExtensionEffectiveStatementImpl extends AbstractEffectiveDocumentedNode<QName, ExtensionStatement>
28 implements ExtensionDefinition {
29 private static final class RecursionDetector extends ThreadLocal<Deque<ExtensionEffectiveStatementImpl>> {
30 boolean check(final ExtensionEffectiveStatementImpl current) {
31 final Deque<ExtensionEffectiveStatementImpl> stack = get();
33 for (ExtensionEffectiveStatementImpl s : stack) {
42 void push(final ExtensionEffectiveStatementImpl current) {
43 Deque<ExtensionEffectiveStatementImpl> stack = get();
45 stack = new ArrayDeque<>(1);
53 Deque<ExtensionEffectiveStatementImpl> stack = get();
55 if (stack.isEmpty()) {
61 private static final RecursionDetector TOSTRING_DETECTOR = new RecursionDetector();
63 private final QName qname;
64 private final String argument;
65 private final SchemaPath schemaPath;
67 private final List<UnknownSchemaNode> unknownNodes;
68 private final boolean yin;
70 private ExtensionEffectiveStatementImpl(
71 final StmtContext<QName, ExtensionStatement, EffectiveStatement<QName, ExtensionStatement>> ctx) {
73 this.qname = ctx.getStatementArgument();
74 this.schemaPath = ctx.getSchemaPath().get();
76 final List<UnknownSchemaNode> unknownNodesInit = new ArrayList<>();
77 for (EffectiveStatement<?, ?> unknownNode : effectiveSubstatements()) {
78 if (unknownNode instanceof UnknownSchemaNode) {
79 unknownNodesInit.add((UnknownSchemaNode) unknownNode);
82 this.unknownNodes = ImmutableList.copyOf(unknownNodesInit);
85 ArgumentEffectiveStatementImpl argumentSubstatement = firstEffective(ArgumentEffectiveStatementImpl.class);
86 if (argumentSubstatement != null) {
87 this.argument = argumentSubstatement.argument().getLocalName();
89 YinElementEffectiveStatementImpl yinElement = argumentSubstatement
90 .firstEffective(YinElementEffectiveStatementImpl.class);
91 if (yinElement != null) {
92 this.yin = yinElement.argument();
103 * Create a new ExtensionEffectiveStatement, dealing with potential recursion
105 * @param ctx Statement context
106 * @return A potentially under-initialized instance
108 public static EffectiveStatement<QName, ExtensionStatement> create(
109 final StmtContext<QName, ExtensionStatement, EffectiveStatement<QName, ExtensionStatement>> ctx) {
110 // Look at the thread-local leak in case we are invoked recursively
111 final ExtensionEffectiveStatementImpl existing = RecursiveObjectLeaker.lookup(ctx,
112 ExtensionEffectiveStatementImpl.class);
113 if (existing != null) {
114 // Careful! this object is not fully initialized!
118 RecursiveObjectLeaker.beforeConstructor(ctx);
120 // This result is fine, we know it has been completely initialized
121 return new ExtensionEffectiveStatementImpl(ctx);
123 RecursiveObjectLeaker.afterConstructor(ctx);
128 Collection<? extends EffectiveStatement<?, ?>> initSubstatements(
129 final Collection<? extends StmtContext<?, ?, ?>> substatementsInit) {
130 // WARNING: this leaks an incompletely-initialized object
131 RecursiveObjectLeaker.inConstructor(this);
133 return super.initSubstatements(substatementsInit);
138 public QName getQName() {
144 public SchemaPath getPath() {
150 public List<UnknownSchemaNode> getUnknownSchemaNodes() {
155 public String getArgument() {
160 public boolean isYinElement() {
165 public int hashCode() {
166 final int prime = 31;
168 result = prime * result + Objects.hashCode(qname);
169 result = prime * result + Objects.hashCode(schemaPath);
174 public boolean equals(final Object obj) {
181 if (getClass() != obj.getClass()) {
184 ExtensionEffectiveStatementImpl other = (ExtensionEffectiveStatementImpl) obj;
185 return Objects.equals(qname, other.qname) && Objects.equals(schemaPath, other.schemaPath);
189 public String toString() {
190 if (TOSTRING_DETECTOR.check(this)) {
191 return recursedToString();
194 TOSTRING_DETECTOR.push(this);
196 return ExtensionEffectiveStatementImpl.class.getSimpleName() + "[" +
197 "argument=" + argument +
199 ", schemaPath=" + schemaPath +
200 ", extensionSchemaNodes=" + unknownNodes +
204 TOSTRING_DETECTOR.pop();
208 private String recursedToString() {
209 return ExtensionEffectiveStatementImpl.class.getSimpleName() + "[" +
210 "argument=" + argument +
212 ", schemaPath=" + schemaPath +