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.reactor.StatementContextBase;
26 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.RecursiveObjectLeaker;
28 public class ExtensionEffectiveStatementImpl extends AbstractEffectiveDocumentedNode<QName, ExtensionStatement>
29 implements ExtensionDefinition {
30 private static final class RecursionDetector extends ThreadLocal<Deque<ExtensionEffectiveStatementImpl>> {
31 boolean check(final ExtensionEffectiveStatementImpl current) {
32 final Deque<ExtensionEffectiveStatementImpl> stack = get();
34 for (ExtensionEffectiveStatementImpl s : stack) {
43 void push(final ExtensionEffectiveStatementImpl current) {
44 Deque<ExtensionEffectiveStatementImpl> stack = get();
46 stack = new ArrayDeque<>(1);
54 Deque<ExtensionEffectiveStatementImpl> stack = get();
56 if (stack.isEmpty()) {
62 private static final RecursionDetector TOSTRING_DETECTOR = new RecursionDetector();
64 private final QName qname;
65 private final String argument;
66 private final SchemaPath schemaPath;
68 private final List<UnknownSchemaNode> unknownNodes;
69 private final boolean yin;
71 private ExtensionEffectiveStatementImpl(
72 final StmtContext<QName, ExtensionStatement, EffectiveStatement<QName, ExtensionStatement>> ctx) {
74 this.qname = ctx.getStatementArgument();
75 this.schemaPath = ctx.getSchemaPath().get();
77 final List<UnknownSchemaNode> unknownNodesInit = new ArrayList<>();
78 for (EffectiveStatement<?, ?> unknownNode : effectiveSubstatements()) {
79 if (unknownNode instanceof UnknownSchemaNode) {
80 unknownNodesInit.add((UnknownSchemaNode) unknownNode);
83 this.unknownNodes = ImmutableList.copyOf(unknownNodesInit);
86 ArgumentEffectiveStatementImpl argumentSubstatement = firstEffective(ArgumentEffectiveStatementImpl.class);
87 if (argumentSubstatement != null) {
88 this.argument = argumentSubstatement.argument().getLocalName();
90 YinElementEffectiveStatementImpl yinElement = argumentSubstatement
91 .firstEffective(YinElementEffectiveStatementImpl.class);
92 if (yinElement != null) {
93 this.yin = yinElement.argument();
104 * Create a new ExtensionEffectiveStatement, dealing with potential recursion
106 * @param ctx Statement context
107 * @return A potentially under-initialized instance
109 public static EffectiveStatement<QName, ExtensionStatement> create(
110 final StmtContext<QName, ExtensionStatement, EffectiveStatement<QName, ExtensionStatement>> ctx) {
111 // Look at the thread-local leak in case we are invoked recursively
112 final ExtensionEffectiveStatementImpl existing = RecursiveObjectLeaker.lookup(ctx,
113 ExtensionEffectiveStatementImpl.class);
114 if (existing != null) {
115 // Careful! this not fully initialized!
119 RecursiveObjectLeaker.beforeConstructor(ctx);
121 // This result is fine, we know it has been completely initialized
122 return new ExtensionEffectiveStatementImpl(ctx);
124 RecursiveObjectLeaker.afterConstructor(ctx);
129 Collection<? extends EffectiveStatement<?, ?>> initSubstatements(
130 final Collection<StatementContextBase<?, ?, ?>> substatementsInit) {
131 // WARNING: this leaks an incompletely-initialized object
132 RecursiveObjectLeaker.inConstructor(this);
134 return super.initSubstatements(substatementsInit);
139 public QName getQName() {
145 public SchemaPath getPath() {
151 public List<UnknownSchemaNode> getUnknownSchemaNodes() {
156 public String getArgument() {
161 public boolean isYinElement() {
166 public int hashCode() {
167 final int prime = 31;
169 result = prime * result + Objects.hashCode(qname);
170 result = prime * result + Objects.hashCode(schemaPath);
175 public boolean equals(final Object obj) {
182 if (getClass() != obj.getClass()) {
185 ExtensionEffectiveStatementImpl other = (ExtensionEffectiveStatementImpl) obj;
186 return Objects.equals(qname, other.qname) && Objects.equals(schemaPath, other.schemaPath);
190 public String toString() {
191 if (TOSTRING_DETECTOR.check(this)) {
192 return recursedToString();
195 TOSTRING_DETECTOR.push(this);
197 return ExtensionEffectiveStatementImpl.class.getSimpleName() + "[" +
198 "argument=" + argument +
200 ", schemaPath=" + schemaPath +
201 ", extensionSchemaNodes=" + unknownNodes +
205 TOSTRING_DETECTOR.pop();
209 private String recursedToString() {
210 return ExtensionEffectiveStatementImpl.class.getSimpleName() + "[" +
211 "argument=" + argument +
213 ", schemaPath=" + schemaPath +