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 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.rfc7950.stmt.AbstractEffectiveDocumentedNode;
28 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.argument.ArgumentEffectiveStatementImpl;
29 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
31 // FIXME: hide this class
32 public 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 ArgumentEffectiveStatementImpl argumentSubstatement = firstEffective(ArgumentEffectiveStatementImpl.class);
91 if (argumentSubstatement != null) {
92 this.argument = argumentSubstatement.argument().getLocalName();
94 YinElementEffectiveStatement yinElement = argumentSubstatement
95 .firstEffective(YinElementEffectiveStatement.class);
96 if (yinElement != null) {
97 this.yin = yinElement.argument();
102 this.argument = null;
108 * Create a new ExtensionEffectiveStatement, dealing with potential recursion.
110 * @param ctx Statement context
111 * @return A potentially under-initialized instance
113 static EffectiveStatement<QName, ExtensionStatement> create(
114 final StmtContext<QName, ExtensionStatement, EffectiveStatement<QName, ExtensionStatement>> ctx) {
115 // Look at the thread-local leak in case we are invoked recursively
116 final ExtensionEffectiveStatementImpl existing = RecursiveObjectLeaker.lookup(ctx,
117 ExtensionEffectiveStatementImpl.class);
118 if (existing != null) {
119 // Careful! this object is not fully initialized!
123 RecursiveObjectLeaker.beforeConstructor(ctx);
125 // This result is fine, we know it has been completely initialized
126 return new ExtensionEffectiveStatementImpl(ctx);
128 RecursiveObjectLeaker.afterConstructor(ctx);
133 protected Collection<? extends EffectiveStatement<?, ?>> initSubstatements(
134 final Collection<? extends StmtContext<?, ?, ?>> substatementsInit) {
135 // WARNING: this leaks an incompletely-initialized object
136 RecursiveObjectLeaker.inConstructor(this);
138 return super.initSubstatements(substatementsInit);
143 public QName getQName() {
149 public SchemaPath getPath() {
155 public List<UnknownSchemaNode> getUnknownSchemaNodes() {
160 public String getArgument() {
165 public boolean isYinElement() {
170 public int hashCode() {
171 final int prime = 31;
173 result = prime * result + Objects.hashCode(qname);
174 result = prime * result + Objects.hashCode(schemaPath);
179 public boolean equals(final Object obj) {
186 if (getClass() != obj.getClass()) {
189 ExtensionEffectiveStatementImpl other = (ExtensionEffectiveStatementImpl) obj;
190 return Objects.equals(qname, other.qname) && Objects.equals(schemaPath, other.schemaPath);
194 public String toString() {
195 if (TOSTRING_DETECTOR.check(this)) {
196 return recursedToString();
199 TOSTRING_DETECTOR.push(this);
201 return ExtensionEffectiveStatementImpl.class.getSimpleName() + "["
202 + "argument=" + argument
204 + ", schemaPath=" + schemaPath
205 + ", extensionSchemaNodes=" + unknownNodes
209 TOSTRING_DETECTOR.pop();
213 private String recursedToString() {
214 return ExtensionEffectiveStatementImpl.class.getSimpleName() + "["
215 + "argument=" + argument
217 + ", schemaPath=" + schemaPath