yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/type/AbstractTypeStatementSupport.java

   1 /*
   2  * Copyright (c) 2017 Pantheon Technologies, s.r.o. 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.parser.rfc7950.stmt.type;
   9
  10 import static com.google.common.base.Preconditions.checkArgument;
  11
  12 import com.google.common.collect.ImmutableList;
  13 import com.google.common.collect.ImmutableMap;
  14 import java.math.BigDecimal;
  15 import java.util.Collection;
  16 import java.util.Optional;
  17 import org.eclipse.jdt.annotation.NonNull;
  18 import org.opendaylight.yangtools.yang.common.QName;
  19 import org.opendaylight.yangtools.yang.common.Uint32;
  20 import org.opendaylight.yangtools.yang.common.YangVersion;
  21 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  22 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
  23 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  24 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
  25 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  26 import org.opendaylight.yangtools.yang.model.api.stmt.BitEffectiveStatement;
  27 import org.opendaylight.yangtools.yang.model.api.stmt.EnumEffectiveStatement;
  28 import org.opendaylight.yangtools.yang.model.api.stmt.FractionDigitsEffectiveStatement;
  29 import org.opendaylight.yangtools.yang.model.api.stmt.LengthEffectiveStatement;
  30 import org.opendaylight.yangtools.yang.model.api.stmt.RangeEffectiveStatement;
  31 import org.opendaylight.yangtools.yang.model.api.stmt.RequireInstanceEffectiveStatement;
  32 import org.opendaylight.yangtools.yang.model.api.stmt.TypeEffectiveStatement;
  33 import org.opendaylight.yangtools.yang.model.api.stmt.TypeStatement;
  34 import org.opendaylight.yangtools.yang.model.api.stmt.TypedefEffectiveStatement;
  35 import org.opendaylight.yangtools.yang.model.api.stmt.TypedefStatement;
  36 import org.opendaylight.yangtools.yang.model.api.stmt.ValueEffectiveStatement;
  37 import org.opendaylight.yangtools.yang.model.api.type.BinaryTypeDefinition;
  38 import org.opendaylight.yangtools.yang.model.api.type.BitsTypeDefinition;
  39 import org.opendaylight.yangtools.yang.model.api.type.BitsTypeDefinition.Bit;
  40 import org.opendaylight.yangtools.yang.model.api.type.BooleanTypeDefinition;
  41 import org.opendaylight.yangtools.yang.model.api.type.DecimalTypeDefinition;
  42 import org.opendaylight.yangtools.yang.model.api.type.EmptyTypeDefinition;
  43 import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition;
  44 import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition.EnumPair;
  45 import org.opendaylight.yangtools.yang.model.api.type.IdentityrefTypeDefinition;
  46 import org.opendaylight.yangtools.yang.model.api.type.InstanceIdentifierTypeDefinition;
  47 import org.opendaylight.yangtools.yang.model.api.type.Int16TypeDefinition;
  48 import org.opendaylight.yangtools.yang.model.api.type.Int32TypeDefinition;
  49 import org.opendaylight.yangtools.yang.model.api.type.Int64TypeDefinition;
  50 import org.opendaylight.yangtools.yang.model.api.type.Int8TypeDefinition;
  51 import org.opendaylight.yangtools.yang.model.api.type.LeafrefTypeDefinition;
  52 import org.opendaylight.yangtools.yang.model.api.type.StringTypeDefinition;
  53 import org.opendaylight.yangtools.yang.model.api.type.Uint16TypeDefinition;
  54 import org.opendaylight.yangtools.yang.model.api.type.Uint32TypeDefinition;
  55 import org.opendaylight.yangtools.yang.model.api.type.Uint64TypeDefinition;
  56 import org.opendaylight.yangtools.yang.model.api.type.Uint8TypeDefinition;
  57 import org.opendaylight.yangtools.yang.model.api.type.UnionTypeDefinition;
  58 import org.opendaylight.yangtools.yang.model.util.type.BitsTypeBuilder;
  59 import org.opendaylight.yangtools.yang.model.util.type.EnumerationTypeBuilder;
  60 import org.opendaylight.yangtools.yang.model.util.type.InstanceIdentifierTypeBuilder;
  61 import org.opendaylight.yangtools.yang.model.util.type.InvalidLengthConstraintException;
  62 import org.opendaylight.yangtools.yang.model.util.type.LengthRestrictedTypeBuilder;
  63 import org.opendaylight.yangtools.yang.model.util.type.RangeRestrictedTypeBuilder;
  64 import org.opendaylight.yangtools.yang.model.util.type.RestrictedTypes;
  65 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseStatementSupport;
  66 import org.opendaylight.yangtools.yang.parser.spi.TypeNamespace;
  67 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
  68 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
  69 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceAction;
  70 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceContext;
  71 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.Prerequisite;
  72 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
  73 import org.opendaylight.yangtools.yang.parser.spi.meta.StatementSupport;
  74 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  75 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
  76 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
  77 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  78 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  79
  80 abstract class AbstractTypeStatementSupport
  81         extends BaseStatementSupport<String, TypeStatement, EffectiveStatement<String, TypeStatement>> {
  82     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(
  83         YangStmtMapping.TYPE)
  84         .addOptional(YangStmtMapping.BASE)
  85         .addAny(YangStmtMapping.BIT)
  86         .addAny(YangStmtMapping.ENUM)
  87         .addOptional(YangStmtMapping.FRACTION_DIGITS)
  88         .addOptional(YangStmtMapping.LENGTH)
  89         .addOptional(YangStmtMapping.PATH)
  90         .addAny(YangStmtMapping.PATTERN)
  91         .addOptional(YangStmtMapping.RANGE)
  92         .addOptional(YangStmtMapping.REQUIRE_INSTANCE)
  93         .addAny(YangStmtMapping.TYPE)
  94         .build();
  95
  96     static final String BINARY = "binary";
  97     static final String BITS = "bits";
  98     static final String BOOLEAN = "boolean";
  99     static final String DECIMAL64 = "decimal64";
 100     static final String EMPTY = "empty";
 101     static final String ENUMERATION = "enumeration";
 102     static final String IDENTITY_REF = "identityref";
 103     static final String INSTANCE_IDENTIFIER = "instance-identifier";
 104     static final String INT8 = "int8";
 105     static final String INT16 = "int16";
 106     static final String INT32 = "int32";
 107     static final String INT64 = "int64";
 108     static final String LEAF_REF = "leafref";
 109     static final String STRING = "string";
 110     static final String UINT8 = "uint8";
 111     static final String UINT16 = "uint16";
 112     static final String UINT32 = "uint32";
 113     static final String UINT64 = "uint64";
 114     static final String UNION = "union";
 115
 116     private static final ImmutableMap<String, String> BUILT_IN_TYPES = ImmutableMap.<String, String>builder()
 117         .put(BINARY, BINARY)
 118         .put(BITS, BITS)
 119         .put(BOOLEAN, BOOLEAN)
 120         .put(DECIMAL64, DECIMAL64)
 121         .put(EMPTY, EMPTY)
 122         .put(ENUMERATION, ENUMERATION)
 123         .put(IDENTITY_REF,IDENTITY_REF)
 124         .put(INSTANCE_IDENTIFIER, INSTANCE_IDENTIFIER)
 125         .put(INT8, INT8)
 126         .put(INT16, INT16)
 127         .put(INT32, INT32)
 128         .put(INT64, INT64)
 129         .put(LEAF_REF, LEAF_REF)
 130         .put(STRING, STRING)
 131         .put(UINT8, UINT8)
 132         .put(UINT16, UINT16)
 133         .put(UINT32, UINT32)
 134         .put(UINT64, UINT64)
 135         .put(UNION, UNION)
 136         .build();
 137
 138     private static final ImmutableMap<String, StatementSupport<?, ?, ?>> ARGUMENT_SPECIFIC_SUPPORTS =
 139             ImmutableMap.<String, StatementSupport<?, ?, ?>>builder()
 140             .put(BITS, new BitsSpecificationSupport())
 141             .put(DECIMAL64, new Decimal64SpecificationSupport())
 142             .put(ENUMERATION, new EnumSpecificationSupport())
 143             .put(IDENTITY_REF, new IdentityRefSpecificationRFC6020Support())
 144             .put(INSTANCE_IDENTIFIER, new InstanceIdentifierSpecificationSupport())
 145             .put(LEAF_REF, new LeafrefSpecificationRFC6020Support())
 146             .put(UNION, new UnionSpecificationSupport())
 147             .build();
 148
 149     AbstractTypeStatementSupport() {
 150         super(YangStmtMapping.TYPE);
 151     }
 152
 153     @Override
 154     public final String parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
 155         return value;
 156     }
 157
 158     @Override
 159     public final void onFullDefinitionDeclared(
 160             final Mutable<String, TypeStatement, EffectiveStatement<String, TypeStatement>> stmt) {
 161         super.onFullDefinitionDeclared(stmt);
 162
 163         // if it is yang built-in type, no prerequisite is needed, so simply return
 164         if (BUILT_IN_TYPES.containsKey(stmt.getStatementArgument())) {
 165             return;
 166         }
 167
 168         final QName typeQName = StmtContextUtils.parseNodeIdentifier(stmt, stmt.getStatementArgument());
 169         final ModelActionBuilder typeAction = stmt.newInferenceAction(ModelProcessingPhase.EFFECTIVE_MODEL);
 170         final Prerequisite<StmtContext<?, ?, ?>> typePrereq = typeAction.requiresCtx(stmt, TypeNamespace.class,
 171                 typeQName, ModelProcessingPhase.EFFECTIVE_MODEL);
 172         typeAction.mutatesEffectiveCtx(stmt.getParentContext());
 173
 174         /*
 175          * If the type does not exist, throw new InferenceException.
 176          * Otherwise perform no operation.
 177          */
 178         typeAction.apply(new InferenceAction() {
 179             @Override
 180             public void apply(final InferenceContext ctx) {
 181                 // Intentional NOOP
 182             }
 183
 184             @Override
 185             public void prerequisiteFailed(final Collection<? extends Prerequisite<?>> failed) {
 186                 InferenceException.throwIf(failed.contains(typePrereq), stmt.getStatementSourceReference(),
 187                     "Type [%s] was not found.", typeQName);
 188             }
 189         });
 190     }
 191
 192     @Override
 193     public final String internArgument(final String rawArgument) {
 194         final String found;
 195         return (found = BUILT_IN_TYPES.get(rawArgument)) != null ? found : rawArgument;
 196     }
 197
 198     @Override
 199     public boolean hasArgumentSpecificSupports() {
 200         return !ARGUMENT_SPECIFIC_SUPPORTS.isEmpty();
 201     }
 202
 203     @Override
 204     public StatementSupport<?, ?, ?> getSupportSpecificForArgument(final String argument) {
 205         return ARGUMENT_SPECIFIC_SUPPORTS.get(argument);
 206     }
 207
 208     @Override
 209     protected final SubstatementValidator getSubstatementValidator() {
 210         return SUBSTATEMENT_VALIDATOR;
 211     }
 212
 213     @Override
 214     protected final TypeStatement createDeclared(final StmtContext<String, TypeStatement, ?> ctx,
 215             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
 216         return new RegularTypeStatement(ctx, substatements);
 217     }
 218
 219     @Override
 220     protected final TypeStatement createEmptyDeclared(final StmtContext<String, TypeStatement, ?> ctx) {
 221         final TypeStatement builtin;
 222         return (builtin = BuiltinTypeStatement.lookup(ctx)) != null ? builtin : new EmptyTypeStatement(ctx);
 223     }
 224
 225     @Override
 226     protected final TypeEffectiveStatement<TypeStatement> createEffective(
 227             final StmtContext<String, TypeStatement, EffectiveStatement<String, TypeStatement>> ctx,
 228             final TypeStatement declared, final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 229         // First look up the proper base type
 230         final TypeEffectiveStatement<TypeStatement> typeStmt = resolveType(ctx);
 231         // Now instantiate the proper effective statement for that type
 232         final TypeDefinition<?> baseType = typeStmt.getTypeDefinition();
 233         if (baseType instanceof BinaryTypeDefinition) {
 234             return createBinary(ctx, (BinaryTypeDefinition) baseType, declared, substatements);
 235         } else if (baseType instanceof BitsTypeDefinition) {
 236             return createBits(ctx, (BitsTypeDefinition) baseType, declared, substatements);
 237         } else if (baseType instanceof BooleanTypeDefinition) {
 238             return createBoolean(ctx, (BooleanTypeDefinition) baseType, declared, substatements);
 239         } else if (baseType instanceof DecimalTypeDefinition) {
 240             return createDecimal(ctx, (DecimalTypeDefinition) baseType, declared, substatements);
 241         } else if (baseType instanceof EmptyTypeDefinition) {
 242             return createEmpty(ctx, (EmptyTypeDefinition) baseType, declared, substatements);
 243         } else if (baseType instanceof EnumTypeDefinition) {
 244             return createEnum(ctx, (EnumTypeDefinition) baseType, declared, substatements);
 245         } else if (baseType instanceof IdentityrefTypeDefinition) {
 246             return createIdentityref(ctx, (IdentityrefTypeDefinition) baseType, declared, substatements);
 247         } else if (baseType instanceof InstanceIdentifierTypeDefinition) {
 248             return createInstanceIdentifier(ctx, (InstanceIdentifierTypeDefinition) baseType, declared, substatements);
 249         } else if (baseType instanceof Int8TypeDefinition) {
 250             return new IntegralTypeEffectiveStatementImpl<>(ctx,
 251                     RestrictedTypes.newInt8Builder((Int8TypeDefinition) baseType, typeEffectiveSchemaPath(ctx)));
 252         } else if (baseType instanceof Int16TypeDefinition) {
 253             return new IntegralTypeEffectiveStatementImpl<>(ctx,
 254                     RestrictedTypes.newInt16Builder((Int16TypeDefinition) baseType, typeEffectiveSchemaPath(ctx)));
 255         } else if (baseType instanceof Int32TypeDefinition) {
 256             return new IntegralTypeEffectiveStatementImpl<>(ctx,
 257                     RestrictedTypes.newInt32Builder((Int32TypeDefinition) baseType, typeEffectiveSchemaPath(ctx)));
 258         } else if (baseType instanceof Int64TypeDefinition) {
 259             return new IntegralTypeEffectiveStatementImpl<>(ctx,
 260                     RestrictedTypes.newInt64Builder((Int64TypeDefinition) baseType, typeEffectiveSchemaPath(ctx)));
 261         } else if (baseType instanceof LeafrefTypeDefinition) {
 262             return new LeafrefTypeEffectiveStatementImpl(ctx, (LeafrefTypeDefinition) baseType);
 263         } else if (baseType instanceof StringTypeDefinition) {
 264             return new StringTypeEffectiveStatementImpl(ctx, (StringTypeDefinition) baseType);
 265         } else if (baseType instanceof Uint8TypeDefinition) {
 266             return new IntegralTypeEffectiveStatementImpl<>(ctx,
 267                     RestrictedTypes.newUint8Builder((Uint8TypeDefinition) baseType, typeEffectiveSchemaPath(ctx)));
 268         } else if (baseType instanceof Uint16TypeDefinition) {
 269             return new IntegralTypeEffectiveStatementImpl<>(ctx,
 270                     RestrictedTypes.newUint16Builder((Uint16TypeDefinition) baseType, typeEffectiveSchemaPath(ctx)));
 271         } else if (baseType instanceof Uint32TypeDefinition) {
 272             return new IntegralTypeEffectiveStatementImpl<>(ctx,
 273                     RestrictedTypes.newUint32Builder((Uint32TypeDefinition) baseType, typeEffectiveSchemaPath(ctx)));
 274         } else if (baseType instanceof Uint64TypeDefinition) {
 275             return new IntegralTypeEffectiveStatementImpl<>(ctx,
 276                     RestrictedTypes.newUint64Builder((Uint64TypeDefinition) baseType, typeEffectiveSchemaPath(ctx)));
 277         } else if (baseType instanceof UnionTypeDefinition) {
 278             return createUnion(ctx, (UnionTypeDefinition) baseType, declared, substatements);
 279         } else {
 280             throw new IllegalStateException("Unhandled base type " + baseType);
 281         }
 282     }
 283
 284     @Override
 285     protected final EffectiveStatement<String, TypeStatement> createEmptyEffective(
 286             final StmtContext<String, TypeStatement, EffectiveStatement<String, TypeStatement>> ctx,
 287             final TypeStatement declared) {
 288         return resolveType(ctx);
 289     }
 290
 291     static final SchemaPath typeEffectiveSchemaPath(final StmtContext<?, ?, ?> stmtCtx) {
 292         final SchemaPath path = stmtCtx.getSchemaPath().get();
 293         final SchemaPath parent = path.getParent();
 294         final QName parentQName = parent.getLastComponent();
 295         checkArgument(parentQName != null, "Path %s has an empty parent", path);
 296
 297         final QName qname = path.getLastComponent().bindTo(parentQName.getModule()).intern();
 298         return parent.createChild(qname);
 299     }
 300
 301     /**
 302      * Resolve type reference, as pointed to by the context's argument.
 303      *
 304      * @param ctx Statement context
 305      * @return Resolved type
 306      * @throws SourceException if the target type cannot be found
 307      */
 308     private static @NonNull TypeEffectiveStatement<TypeStatement> resolveType(final StmtContext<String, ?, ?> ctx) {
 309         final String argument = ctx.coerceStatementArgument();
 310         switch (argument) {
 311             case BINARY:
 312                 return BuiltinEffectiveStatement.BINARY;
 313             case BOOLEAN:
 314                 return BuiltinEffectiveStatement.BOOLEAN;
 315             case EMPTY:
 316                 return BuiltinEffectiveStatement.EMPTY;
 317             case INSTANCE_IDENTIFIER:
 318                 return BuiltinEffectiveStatement.INSTANCE_IDENTIFIER;
 319             case INT8:
 320                 return BuiltinEffectiveStatement.INT8;
 321             case INT16:
 322                 return BuiltinEffectiveStatement.INT16;
 323             case INT32:
 324                 return BuiltinEffectiveStatement.INT32;
 325             case INT64:
 326                 return BuiltinEffectiveStatement.INT64;
 327             case STRING:
 328                 return BuiltinEffectiveStatement.STRING;
 329             case UINT8:
 330                 return BuiltinEffectiveStatement.UINT8;
 331             case UINT16:
 332                 return BuiltinEffectiveStatement.UINT16;
 333             case UINT32:
 334                 return BuiltinEffectiveStatement.UINT32;
 335             case UINT64:
 336                 return BuiltinEffectiveStatement.UINT64;
 337             default:
 338                 final QName qname = StmtContextUtils.parseNodeIdentifier(ctx, argument);
 339                 final StmtContext<?, TypedefStatement, TypedefEffectiveStatement> typedef =
 340                         SourceException.throwIfNull(ctx.getFromNamespace(TypeNamespace.class, qname),
 341                             ctx.getStatementSourceReference(), "Type '%s' not found", qname);
 342                 return typedef.buildEffective().asTypeEffectiveStatement();
 343         }
 344     }
 345
 346     private static @NonNull TypeEffectiveStatement<TypeStatement> createBinary(final StmtContext<?, ?, ?> ctx,
 347             final BinaryTypeDefinition baseType, final TypeStatement declared,
 348             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 349         final LengthRestrictedTypeBuilder<BinaryTypeDefinition> builder =
 350                 RestrictedTypes.newBinaryBuilder(baseType, typeEffectiveSchemaPath(ctx));
 351
 352         for (EffectiveStatement<?, ?> stmt : substatements) {
 353             if (stmt instanceof LengthEffectiveStatement) {
 354                 final LengthEffectiveStatement length = (LengthEffectiveStatement)stmt;
 355
 356                 try {
 357                     builder.setLengthConstraint(length, length.argument());
 358                 } catch (IllegalStateException e) {
 359                     throw new SourceException(ctx.getStatementSourceReference(), e,
 360                         "Multiple length constraints encountered");
 361                 } catch (InvalidLengthConstraintException e) {
 362                     throw new SourceException(ctx.getStatementSourceReference(), e, "Invalid length constraint %s",
 363                         length.argument());
 364                 }
 365             }
 366         }
 367
 368         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 369     }
 370
 371     private static @NonNull TypeEffectiveStatement<TypeStatement> createBits(final StmtContext<?, ?, ?> ctx,
 372             final BitsTypeDefinition baseType, final TypeStatement declared,
 373             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 374         final BitsTypeBuilder builder = RestrictedTypes.newBitsBuilder(baseType, ctx.getSchemaPath().get());
 375
 376         final YangVersion yangVersion = ctx.getRootVersion();
 377         for (final EffectiveStatement<?, ?> stmt : substatements) {
 378             if (stmt instanceof BitEffectiveStatement) {
 379                 SourceException.throwIf(yangVersion != YangVersion.VERSION_1_1, ctx.getStatementSourceReference(),
 380                         "Restricted bits type is allowed only in YANG 1.1 version.");
 381                 final BitEffectiveStatement bitSubStmt = (BitEffectiveStatement) stmt;
 382
 383                 // FIXME: this looks like a duplicate of BitsSpecificationEffectiveStatement
 384                 final Optional<Uint32> declaredPosition = bitSubStmt.getDeclaredPosition();
 385                 final Uint32 effectivePos;
 386                 if (declaredPosition.isEmpty()) {
 387                     effectivePos = getBaseTypeBitPosition(bitSubStmt.argument(), baseType, ctx);
 388                 } else {
 389                     effectivePos = declaredPosition.get();
 390                 }
 391
 392                 builder.addBit(EffectiveTypeUtil.buildBit(bitSubStmt, effectivePos));
 393             }
 394         }
 395
 396         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 397     }
 398
 399     private static @NonNull TypeEffectiveStatement<TypeStatement> createBoolean(final StmtContext<?, ?, ?> ctx,
 400             final BooleanTypeDefinition baseType, final TypeStatement declared,
 401             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 402         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newBooleanBuilder(baseType,
 403             typeEffectiveSchemaPath(ctx)));
 404     }
 405
 406     private static @NonNull TypeEffectiveStatement<TypeStatement> createDecimal(final StmtContext<?, ?, ?> ctx,
 407             final DecimalTypeDefinition baseType, final TypeStatement declared,
 408             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 409         final RangeRestrictedTypeBuilder<DecimalTypeDefinition, BigDecimal> builder =
 410                 RestrictedTypes.newDecima64Builder(baseType, typeEffectiveSchemaPath(ctx));
 411
 412         for (EffectiveStatement<?, ?> stmt : substatements) {
 413             if (stmt instanceof RangeEffectiveStatement) {
 414                 final RangeEffectiveStatement range = (RangeEffectiveStatement) stmt;
 415                 builder.setRangeConstraint(range, range.argument());
 416             }
 417             if (stmt instanceof FractionDigitsEffectiveStatement) {
 418                 final Integer digits = ((FractionDigitsEffectiveStatement)stmt).argument();
 419                 SourceException.throwIf(baseType.getFractionDigits() != digits, ctx.getStatementSourceReference(),
 420                     "Cannot override fraction-digits from base type %s to %s", baseType, digits);
 421             }
 422         }
 423
 424         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 425     }
 426
 427     private static @NonNull TypeEffectiveStatement<TypeStatement> createEmpty(final StmtContext<?, ?, ?> ctx,
 428             final EmptyTypeDefinition baseType, final TypeStatement declared,
 429             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 430         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newEmptyBuilder(baseType,
 431             typeEffectiveSchemaPath(ctx)));
 432     }
 433
 434     private static @NonNull TypeEffectiveStatement<TypeStatement> createEnum(final StmtContext<?, ?, ?> ctx,
 435             final EnumTypeDefinition baseType, final TypeStatement declared,
 436             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 437         final EnumerationTypeBuilder builder = RestrictedTypes.newEnumerationBuilder(baseType,
 438             ctx.getSchemaPath().get());
 439
 440         final YangVersion yangVersion = ctx.getRootVersion();
 441         for (final EffectiveStatement<?, ?> stmt : substatements) {
 442             if (stmt instanceof EnumEffectiveStatement) {
 443                 SourceException.throwIf(yangVersion != YangVersion.VERSION_1_1, ctx.getStatementSourceReference(),
 444                         "Restricted enumeration type is allowed only in YANG 1.1 version.");
 445
 446                 final EnumEffectiveStatement enumSubStmt = (EnumEffectiveStatement) stmt;
 447                 final Optional<Integer> declaredValue =
 448                         enumSubStmt.findFirstEffectiveSubstatementArgument(ValueEffectiveStatement.class);
 449                 final int effectiveValue;
 450                 if (declaredValue.isEmpty()) {
 451                     effectiveValue = getBaseTypeEnumValue(enumSubStmt.getDeclared().rawArgument(), baseType, ctx);
 452                 } else {
 453                     effectiveValue = declaredValue.orElseThrow();
 454                 }
 455
 456                 builder.addEnum(EffectiveTypeUtil.buildEnumPair(enumSubStmt, effectiveValue));
 457             }
 458         }
 459
 460         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 461     }
 462
 463     private static @NonNull TypeEffectiveStatement<TypeStatement> createIdentityref(final StmtContext<?, ?, ?> ctx,
 464             final IdentityrefTypeDefinition baseType, final TypeStatement declared,
 465             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 466         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newIdentityrefBuilder(baseType,
 467             typeEffectiveSchemaPath(ctx)));
 468     }
 469
 470     private static @NonNull TypeEffectiveStatement<TypeStatement> createInstanceIdentifier(
 471             final StmtContext<?, ?, ?> ctx, final InstanceIdentifierTypeDefinition baseType,
 472             final TypeStatement declared, final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 473         final InstanceIdentifierTypeBuilder builder = RestrictedTypes.newInstanceIdentifierBuilder(baseType,
 474                     typeEffectiveSchemaPath(ctx));
 475
 476         for (EffectiveStatement<?, ?> stmt : substatements) {
 477             if (stmt instanceof RequireInstanceEffectiveStatement) {
 478                 builder.setRequireInstance(((RequireInstanceEffectiveStatement)stmt).argument());
 479             }
 480         }
 481
 482         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 483     }
 484
 485     private static @NonNull TypeEffectiveStatement<TypeStatement> createUnion(final StmtContext<?, ?, ?> ctx,
 486             final UnionTypeDefinition baseType, final TypeStatement declared,
 487             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 488         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newUnionBuilder(baseType,
 489             typeEffectiveSchemaPath(ctx)));
 490     }
 491
 492     private static Uint32 getBaseTypeBitPosition(final String bitName, final BitsTypeDefinition baseType,
 493             final StmtContext<?, ?, ?> ctx) {
 494         for (Bit baseTypeBit : baseType.getBits()) {
 495             if (bitName.equals(baseTypeBit.getName())) {
 496                 return baseTypeBit.getPosition();
 497             }
 498         }
 499
 500         throw new SourceException(ctx.getStatementSourceReference(),
 501                 "Bit '%s' is not a subset of its base bits type %s.", bitName, baseType.getQName());
 502     }
 503
 504     private static int getBaseTypeEnumValue(final String enumName, final EnumTypeDefinition baseType,
 505             final StmtContext<?, ?, ?> ctx) {
 506         for (EnumPair baseTypeEnumPair : baseType.getValues()) {
 507             if (enumName.equals(baseTypeEnumPair.getName())) {
 508                 return baseTypeEnumPair.getValue();
 509             }
 510         }
 511
 512         throw new SourceException(ctx.getStatementSourceReference(),
 513                 "Enum '%s' is not a subset of its base enumeration type %s.", enumName, baseType.getQName());
 514     }
 515 }