yang/yang-model-ri/src/main/java/org/opendaylight/yangtools/yang/model/ri/stmt/impl/eff/TypedefEffectiveStatementImpl.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   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
   7  */
   8 package org.opendaylight.yangtools.yang.model.ri.stmt.impl.eff;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.collect.ImmutableList;
  13 import java.lang.invoke.MethodHandles;
  14 import java.lang.invoke.MethodHandles.Lookup;
  15 import java.lang.invoke.VarHandle;
  16 import java.util.Collection;
  17 import java.util.Map;
  18 import java.util.Optional;
  19 import org.eclipse.jdt.annotation.NonNull;
  20 import org.opendaylight.yangtools.concepts.Immutable;
  21 import org.opendaylight.yangtools.yang.common.QName;
  22 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
  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.meta.IdentifierNamespace;
  26 import org.opendaylight.yangtools.yang.model.api.meta.StatementOrigin;
  27 import org.opendaylight.yangtools.yang.model.api.stmt.DefaultEffectiveStatement;
  28 import org.opendaylight.yangtools.yang.model.api.stmt.DescriptionEffectiveStatement;
  29 import org.opendaylight.yangtools.yang.model.api.stmt.ReferenceEffectiveStatement;
  30 import org.opendaylight.yangtools.yang.model.api.stmt.StatusEffectiveStatement;
  31 import org.opendaylight.yangtools.yang.model.api.stmt.TypeEffectiveStatement;
  32 import org.opendaylight.yangtools.yang.model.api.stmt.TypeStatement;
  33 import org.opendaylight.yangtools.yang.model.api.stmt.TypedefEffectiveStatement;
  34 import org.opendaylight.yangtools.yang.model.api.stmt.TypedefStatement;
  35 import org.opendaylight.yangtools.yang.model.api.stmt.UnitsEffectiveStatement;
  36 import org.opendaylight.yangtools.yang.model.ri.type.DerivedTypeBuilder;
  37 import org.opendaylight.yangtools.yang.model.ri.type.DerivedTypes;
  38 import org.opendaylight.yangtools.yang.model.spi.meta.AbstractDeclaredEffectiveStatement.Default;
  39 import org.opendaylight.yangtools.yang.model.spi.meta.EffectiveStatementMixins.SchemaNodeMixin;
  40 import org.slf4j.Logger;
  41 import org.slf4j.LoggerFactory;
  42
  43 public final class TypedefEffectiveStatementImpl extends Default<QName, TypedefStatement>
  44         implements TypedefEffectiveStatement, SchemaNodeMixin<QName, TypedefStatement> {
  45     private static final Logger LOG = LoggerFactory.getLogger(TypedefEffectiveStatementImpl.class);
  46
  47     private static final VarHandle TYPE_DEFINITION;
  48     private static final VarHandle TYPE_STATEMENT;
  49
  50     static {
  51         final Lookup lookup = MethodHandles.lookup();
  52         try {
  53             TYPE_DEFINITION = lookup.findVarHandle(TypedefEffectiveStatementImpl.class, "typeDefinition",
  54                 TypeDefinition.class);
  55             TYPE_STATEMENT = lookup.findVarHandle(TypedefEffectiveStatementImpl.class, "typeStatement",
  56                 ProxyTypeEffectiveStatement.class);
  57         } catch (NoSuchFieldException | IllegalAccessException e) {
  58             throw new ExceptionInInitializerError(e);
  59         }
  60     }
  61
  62     private final @NonNull Object substatements;
  63     private final @NonNull Immutable path;
  64     private final int flags;
  65
  66     // Accessed via TYPE_DEFINITION
  67     @SuppressWarnings("unused")
  68     private volatile TypeDefinition<?> typeDefinition;
  69     // Accessed via TYPE_STATEMENT
  70     @SuppressWarnings("unused")
  71     private volatile ProxyTypeEffectiveStatement typeStatement;
  72
  73     public TypedefEffectiveStatementImpl(final TypedefStatement declared, final Immutable path, final int flags,
  74             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  75         super(declared);
  76         this.path = requireNonNull(path);
  77         this.flags = flags;
  78         this.substatements = maskList(substatements);
  79     }
  80
  81     @Override
  82     public int flags() {
  83         return flags;
  84     }
  85
  86     @Override
  87     public Immutable pathObject() {
  88         return path;
  89     }
  90
  91     @Override
  92     public @NonNull QName argument() {
  93         return getQName();
  94     }
  95
  96     @Override
  97     public ImmutableList<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
  98         return unmaskList(substatements);
  99     }
 100
 101     @Override
 102     public TypeDefinition<?> getTypeDefinition() {
 103         final TypeDefinition<?> existing = (TypeDefinition<?>) TYPE_DEFINITION.getAcquire(this);
 104         return existing != null ? existing : loadTypeDefinition();
 105     }
 106
 107     @Override
 108     public TypeEffectiveStatement<TypeStatement> asTypeEffectiveStatement() {
 109         final ProxyTypeEffectiveStatement local = (ProxyTypeEffectiveStatement) TYPE_STATEMENT.getAcquire(this);
 110         return local != null ? local : loadTypeStatement();
 111     }
 112
 113     private @NonNull TypeDefinition<?> loadTypeDefinition() {
 114         final TypeEffectiveStatement<?> type = findFirstEffectiveSubstatement(TypeEffectiveStatement.class).get();
 115         final DerivedTypeBuilder<?> builder = DerivedTypes.derivedTypeBuilder(type.getTypeDefinition(), getQName());
 116
 117         for (final EffectiveStatement<?, ?> stmt : effectiveSubstatements()) {
 118             if (stmt instanceof DefaultEffectiveStatement) {
 119                 builder.setDefaultValue(((DefaultEffectiveStatement) stmt).argument());
 120             } else if (stmt instanceof DescriptionEffectiveStatement) {
 121                 builder.setDescription(((DescriptionEffectiveStatement)stmt).argument());
 122             } else if (stmt instanceof ReferenceEffectiveStatement) {
 123                 builder.setReference(((ReferenceEffectiveStatement)stmt).argument());
 124             } else if (stmt instanceof StatusEffectiveStatement) {
 125                 builder.setStatus(((StatusEffectiveStatement)stmt).argument());
 126             } else if (stmt instanceof UnitsEffectiveStatement) {
 127                 builder.setUnits(((UnitsEffectiveStatement)stmt).argument());
 128             } else if (stmt instanceof UnknownSchemaNode) {
 129                 // FIXME: should not directly implement, I think
 130                 builder.addUnknownSchemaNode((UnknownSchemaNode)stmt);
 131             } else if (!(stmt instanceof TypeEffectiveStatement)) {
 132                 LOG.debug("Ignoring statement {}", stmt);
 133             }
 134         }
 135
 136         final TypeDefinition<?> created = builder.build();
 137         final Object witness = TYPE_DEFINITION.compareAndExchangeRelease(this, null, created);
 138         return witness == null ? created : (TypeDefinition<?>) witness;
 139     }
 140
 141     private @NonNull ProxyTypeEffectiveStatement loadTypeStatement() {
 142         final ProxyTypeEffectiveStatement created = new ProxyTypeEffectiveStatement();
 143         final Object witness = TYPE_STATEMENT.compareAndExchangeRelease(this, null, created);
 144         return witness == null ? created : (ProxyTypeEffectiveStatement) witness;
 145     }
 146
 147     private final class ProxyTypeEffectiveStatement implements TypeEffectiveStatement<TypeStatement> {
 148         @Override
 149         public TypeStatement getDeclared() {
 150             return null;
 151         }
 152
 153         @Override
 154         public <K, V, N extends IdentifierNamespace<K, V>> Optional<? extends V> get(final Class<N> namespace,
 155                 final K identifier) {
 156             return TypedefEffectiveStatementImpl.this.get(namespace, identifier);
 157         }
 158
 159         @Override
 160         public <K, V, N extends IdentifierNamespace<K, V>> Map<K, V> getAll(final Class<N> namespace) {
 161             return TypedefEffectiveStatementImpl.this.getAll(namespace);
 162         }
 163
 164         @Override
 165         public Collection<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
 166             return TypedefEffectiveStatementImpl.this.effectiveSubstatements();
 167         }
 168
 169         @Override
 170         public QName argument() {
 171             return getQName();
 172         }
 173
 174         @Override
 175         public StatementOrigin statementOrigin() {
 176             return StatementOrigin.CONTEXT;
 177         }
 178
 179         @Override
 180         public TypeDefinition<?> getTypeDefinition() {
 181             return TypedefEffectiveStatementImpl.this.getTypeDefinition();
 182         }
 183     }
 184 }