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.rfc7950.stmt.extension;
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 java.util.Optional;
18 import javax.annotation.Nonnull;
19 import org.opendaylight.yangtools.util.RecursiveObjectLeaker;
20 import org.opendaylight.yangtools.yang.common.QName;
21 import org.opendaylight.yangtools.yang.model.api.ExtensionDefinition;
22 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
23 import org.opendaylight.yangtools.yang.model.api.UnknownSchemaNode;
24 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
25 import org.opendaylight.yangtools.yang.model.api.stmt.ArgumentEffectiveStatement;
26 import org.opendaylight.yangtools.yang.model.api.stmt.ExtensionEffectiveStatement;
27 import org.opendaylight.yangtools.yang.model.api.stmt.ExtensionStatement;
28 import org.opendaylight.yangtools.yang.model.api.stmt.YinElementEffectiveStatement;
29 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.AbstractEffectiveDocumentedNode;
30 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
32 final class ExtensionEffectiveStatementImpl extends AbstractEffectiveDocumentedNode<QName, ExtensionStatement>
33 implements ExtensionDefinition, ExtensionEffectiveStatement {
34 private static final class RecursionDetector extends ThreadLocal<Deque<ExtensionEffectiveStatementImpl>> {
35 boolean check(final ExtensionEffectiveStatementImpl current) {
36 final Deque<ExtensionEffectiveStatementImpl> stack = get();
38 for (ExtensionEffectiveStatementImpl s : stack) {
47 void push(final ExtensionEffectiveStatementImpl current) {
48 Deque<ExtensionEffectiveStatementImpl> stack = get();
50 stack = new ArrayDeque<>(1);
58 Deque<ExtensionEffectiveStatementImpl> stack = get();
60 if (stack.isEmpty()) {
66 private static final RecursionDetector TOSTRING_DETECTOR = new RecursionDetector();
68 private final QName qname;
69 private final String argument;
70 private final SchemaPath schemaPath;
72 private final List<UnknownSchemaNode> unknownNodes;
73 private final boolean yin;
75 private ExtensionEffectiveStatementImpl(
76 final StmtContext<QName, ExtensionStatement, EffectiveStatement<QName, ExtensionStatement>> ctx) {
78 this.qname = ctx.getStatementArgument();
79 this.schemaPath = ctx.getSchemaPath().get();
81 final List<UnknownSchemaNode> unknownNodesInit = new ArrayList<>();
82 for (EffectiveStatement<?, ?> unknownNode : effectiveSubstatements()) {
83 if (unknownNode instanceof UnknownSchemaNode) {
84 unknownNodesInit.add((UnknownSchemaNode) unknownNode);
87 this.unknownNodes = ImmutableList.copyOf(unknownNodesInit);
90 final Optional<ArgumentEffectiveStatement> optArgumentSubstatement = findFirstEffectiveSubstatement(
91 ArgumentEffectiveStatement.class);
92 if (optArgumentSubstatement.isPresent()) {
93 final ArgumentEffectiveStatement argumentStatement = optArgumentSubstatement.get();
94 this.argument = argumentStatement.argument().getLocalName();
95 this.yin = argumentStatement.findFirstEffectiveSubstatement(YinElementEffectiveStatement.class)
96 .map(YinElementEffectiveStatement::argument).orElse(Boolean.FALSE).booleanValue();
104 * Create a new ExtensionEffectiveStatement, dealing with potential recursion.
106 * @param ctx Statement context
107 * @return A potentially under-initialized instance
109 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 object is 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 protected Collection<? extends EffectiveStatement<?, ?>> initSubstatements(
130 final Collection<? extends StmtContext<?, ?, ?>> 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