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 org.eclipse.jdt.annotation.NonNull;
19 import org.eclipse.jdt.annotation.Nullable;
20 import org.opendaylight.yangtools.util.RecursiveObjectLeaker;
21 import org.opendaylight.yangtools.yang.common.QName;
22 import org.opendaylight.yangtools.yang.model.api.ExtensionDefinition;
23 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
24 import org.opendaylight.yangtools.yang.model.api.UnknownSchemaNode;
25 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
26 import org.opendaylight.yangtools.yang.model.api.stmt.ArgumentEffectiveStatement;
27 import org.opendaylight.yangtools.yang.model.api.stmt.ExtensionEffectiveStatement;
28 import org.opendaylight.yangtools.yang.model.api.stmt.ExtensionStatement;
29 import org.opendaylight.yangtools.yang.model.api.stmt.YinElementEffectiveStatement;
30 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.AbstractEffectiveDocumentedNode;
31 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
33 final class ExtensionEffectiveStatementImpl extends AbstractEffectiveDocumentedNode<QName, ExtensionStatement>
34 implements ExtensionDefinition, ExtensionEffectiveStatement {
35 private static final class RecursionDetector extends ThreadLocal<Deque<ExtensionEffectiveStatementImpl>> {
36 boolean check(final ExtensionEffectiveStatementImpl current) {
37 final Deque<ExtensionEffectiveStatementImpl> stack = get();
39 for (ExtensionEffectiveStatementImpl s : stack) {
48 void push(final ExtensionEffectiveStatementImpl current) {
49 Deque<ExtensionEffectiveStatementImpl> stack = get();
51 stack = new ArrayDeque<>(1);
59 Deque<ExtensionEffectiveStatementImpl> stack = get();
61 if (stack.isEmpty()) {
67 private static final RecursionDetector TOSTRING_DETECTOR = new RecursionDetector();
69 private final @NonNull QName qname;
70 private final @Nullable String argument;
71 private final @NonNull SchemaPath schemaPath;
73 private final @NonNull List<UnknownSchemaNode> unknownNodes;
74 private final boolean yin;
76 private ExtensionEffectiveStatementImpl(
77 final StmtContext<QName, ExtensionStatement, EffectiveStatement<QName, ExtensionStatement>> ctx) {
79 this.qname = ctx.coerceStatementArgument();
80 this.schemaPath = ctx.getSchemaPath().get();
82 final List<UnknownSchemaNode> unknownNodesInit = new ArrayList<>();
83 for (EffectiveStatement<?, ?> unknownNode : effectiveSubstatements()) {
84 if (unknownNode instanceof UnknownSchemaNode) {
85 unknownNodesInit.add((UnknownSchemaNode) unknownNode);
88 this.unknownNodes = ImmutableList.copyOf(unknownNodesInit);
91 final Optional<ArgumentEffectiveStatement> optArgumentSubstatement = findFirstEffectiveSubstatement(
92 ArgumentEffectiveStatement.class);
93 if (optArgumentSubstatement.isPresent()) {
94 final ArgumentEffectiveStatement argumentStatement = optArgumentSubstatement.get();
95 this.argument = argumentStatement.argument().getLocalName();
96 this.yin = argumentStatement.findFirstEffectiveSubstatement(YinElementEffectiveStatement.class)
97 .map(YinElementEffectiveStatement::argument).orElse(Boolean.FALSE).booleanValue();
105 * Create a new ExtensionEffectiveStatement, dealing with potential recursion.
107 * @param ctx Statement context
108 * @return A potentially under-initialized instance
110 static EffectiveStatement<QName, ExtensionStatement> create(
111 final StmtContext<QName, ExtensionStatement, EffectiveStatement<QName, ExtensionStatement>> ctx) {
112 // Look at the thread-local leak in case we are invoked recursively
113 final ExtensionEffectiveStatementImpl existing = RecursiveObjectLeaker.lookup(ctx,
114 ExtensionEffectiveStatementImpl.class);
115 if (existing != null) {
116 // Careful! this object is not fully initialized!
120 RecursiveObjectLeaker.beforeConstructor(ctx);
122 // This result is fine, we know it has been completely initialized
123 return new ExtensionEffectiveStatementImpl(ctx);
125 RecursiveObjectLeaker.afterConstructor(ctx);
130 protected Collection<? extends EffectiveStatement<?, ?>> initSubstatements(
131 final Collection<? extends StmtContext<?, ?, ?>> substatementsInit) {
132 // WARNING: this leaks an incompletely-initialized object
133 RecursiveObjectLeaker.inConstructor(this);
135 return super.initSubstatements(substatementsInit);
139 public QName getQName() {
144 public SchemaPath getPath() {
149 public List<UnknownSchemaNode> getUnknownSchemaNodes() {
154 public String getArgument() {
159 public boolean isYinElement() {
164 public int hashCode() {
165 final int prime = 31;
167 result = prime * result + Objects.hashCode(qname);
168 result = prime * result + Objects.hashCode(schemaPath);
173 public boolean equals(final Object obj) {
180 if (getClass() != obj.getClass()) {
183 ExtensionEffectiveStatementImpl other = (ExtensionEffectiveStatementImpl) obj;
184 return Objects.equals(qname, other.qname) && Objects.equals(schemaPath, other.schemaPath);
188 public String toString() {
189 if (TOSTRING_DETECTOR.check(this)) {
190 return recursedToString();
193 TOSTRING_DETECTOR.push(this);
195 return ExtensionEffectiveStatementImpl.class.getSimpleName() + "["
196 + "argument=" + argument
198 + ", schemaPath=" + schemaPath
199 + ", extensionSchemaNodes=" + unknownNodes
203 TOSTRING_DETECTOR.pop();
207 private String recursedToString() {
208 return ExtensionEffectiveStatementImpl.class.getSimpleName() + "["
209 + "argument=" + argument
211 + ", schemaPath=" + schemaPath