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.util.RecursiveObjectLeaker;
19 import org.opendaylight.yangtools.yang.common.QName;
20 import org.opendaylight.yangtools.yang.model.api.ExtensionDefinition;
21 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
22 import org.opendaylight.yangtools.yang.model.api.UnknownSchemaNode;
23 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
24 import org.opendaylight.yangtools.yang.model.api.stmt.ExtensionEffectiveStatement;
25 import org.opendaylight.yangtools.yang.model.api.stmt.ExtensionStatement;
26 import org.opendaylight.yangtools.yang.model.api.stmt.YinElementEffectiveStatement;
27 import org.opendaylight.yangtools.yang.parser.rfc6020.util.AbstractEffectiveDocumentedNode;
28 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
30 public class ExtensionEffectiveStatementImpl extends AbstractEffectiveDocumentedNode<QName, ExtensionStatement>
31 implements ExtensionDefinition, ExtensionEffectiveStatement {
32 private static final class RecursionDetector extends ThreadLocal<Deque<ExtensionEffectiveStatementImpl>> {
33 boolean check(final ExtensionEffectiveStatementImpl current) {
34 final Deque<ExtensionEffectiveStatementImpl> stack = get();
36 for (ExtensionEffectiveStatementImpl s : stack) {
45 void push(final ExtensionEffectiveStatementImpl current) {
46 Deque<ExtensionEffectiveStatementImpl> stack = get();
48 stack = new ArrayDeque<>(1);
56 Deque<ExtensionEffectiveStatementImpl> stack = get();
58 if (stack.isEmpty()) {
64 private static final RecursionDetector TOSTRING_DETECTOR = new RecursionDetector();
66 private final QName qname;
67 private final String argument;
68 private final SchemaPath schemaPath;
70 private final List<UnknownSchemaNode> unknownNodes;
71 private final boolean yin;
73 private ExtensionEffectiveStatementImpl(
74 final StmtContext<QName, ExtensionStatement, EffectiveStatement<QName, ExtensionStatement>> ctx) {
76 this.qname = ctx.getStatementArgument();
77 this.schemaPath = ctx.getSchemaPath().get();
79 final List<UnknownSchemaNode> unknownNodesInit = new ArrayList<>();
80 for (EffectiveStatement<?, ?> unknownNode : effectiveSubstatements()) {
81 if (unknownNode instanceof UnknownSchemaNode) {
82 unknownNodesInit.add((UnknownSchemaNode) unknownNode);
85 this.unknownNodes = ImmutableList.copyOf(unknownNodesInit);
88 ArgumentEffectiveStatementImpl argumentSubstatement = firstEffective(ArgumentEffectiveStatementImpl.class);
89 if (argumentSubstatement != null) {
90 this.argument = argumentSubstatement.argument().getLocalName();
92 YinElementEffectiveStatement yinElement = argumentSubstatement
93 .firstEffective(YinElementEffectiveStatement.class);
94 if (yinElement != null) {
95 this.yin = yinElement.argument();
100 this.argument = null;
106 * Create a new ExtensionEffectiveStatement, dealing with potential recursion.
108 * @param ctx Statement context
109 * @return A potentially under-initialized instance
111 public static EffectiveStatement<QName, ExtensionStatement> create(
112 final StmtContext<QName, ExtensionStatement, EffectiveStatement<QName, ExtensionStatement>> ctx) {
113 // Look at the thread-local leak in case we are invoked recursively
114 final ExtensionEffectiveStatementImpl existing = RecursiveObjectLeaker.lookup(ctx,
115 ExtensionEffectiveStatementImpl.class);
116 if (existing != null) {
117 // Careful! this object is not fully initialized!
121 RecursiveObjectLeaker.beforeConstructor(ctx);
123 // This result is fine, we know it has been completely initialized
124 return new ExtensionEffectiveStatementImpl(ctx);
126 RecursiveObjectLeaker.afterConstructor(ctx);
131 protected Collection<? extends EffectiveStatement<?, ?>> initSubstatements(
132 final Collection<? extends StmtContext<?, ?, ?>> substatementsInit) {
133 // WARNING: this leaks an incompletely-initialized object
134 RecursiveObjectLeaker.inConstructor(this);
136 return super.initSubstatements(substatementsInit);
141 public QName getQName() {
147 public SchemaPath getPath() {
153 public List<UnknownSchemaNode> getUnknownSchemaNodes() {
158 public String getArgument() {
163 public boolean isYinElement() {
168 public int hashCode() {
169 final int prime = 31;
171 result = prime * result + Objects.hashCode(qname);
172 result = prime * result + Objects.hashCode(schemaPath);
177 public boolean equals(final Object obj) {
184 if (getClass() != obj.getClass()) {
187 ExtensionEffectiveStatementImpl other = (ExtensionEffectiveStatementImpl) obj;
188 return Objects.equals(qname, other.qname) && Objects.equals(schemaPath, other.schemaPath);
192 public String toString() {
193 if (TOSTRING_DETECTOR.check(this)) {
194 return recursedToString();
197 TOSTRING_DETECTOR.push(this);
199 return ExtensionEffectiveStatementImpl.class.getSimpleName() + "["
200 + "argument=" + argument
202 + ", schemaPath=" + schemaPath
203 + ", extensionSchemaNodes=" + unknownNodes
207 TOSTRING_DETECTOR.pop();
211 private String recursedToString() {
212 return ExtensionEffectiveStatementImpl.class.getSimpleName() + "["
213 + "argument=" + argument
215 + ", schemaPath=" + schemaPath