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.PatternEffectiveStatement;
  31 import org.opendaylight.yangtools.yang.model.api.stmt.RangeEffectiveStatement;
  32 import org.opendaylight.yangtools.yang.model.api.stmt.RequireInstanceEffectiveStatement;
  33 import org.opendaylight.yangtools.yang.model.api.stmt.TypeEffectiveStatement;
  34 import org.opendaylight.yangtools.yang.model.api.stmt.TypeStatement;
  35 import org.opendaylight.yangtools.yang.model.api.stmt.TypedefEffectiveStatement;
  36 import org.opendaylight.yangtools.yang.model.api.stmt.TypedefStatement;
  37 import org.opendaylight.yangtools.yang.model.api.stmt.ValueEffectiveStatement;
  38 import org.opendaylight.yangtools.yang.model.api.type.BinaryTypeDefinition;
  39 import org.opendaylight.yangtools.yang.model.api.type.BitsTypeDefinition;
  40 import org.opendaylight.yangtools.yang.model.api.type.BitsTypeDefinition.Bit;
  41 import org.opendaylight.yangtools.yang.model.api.type.BooleanTypeDefinition;
  42 import org.opendaylight.yangtools.yang.model.api.type.DecimalTypeDefinition;
  43 import org.opendaylight.yangtools.yang.model.api.type.EmptyTypeDefinition;
  44 import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition;
  45 import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition.EnumPair;
  46 import org.opendaylight.yangtools.yang.model.api.type.IdentityrefTypeDefinition;
  47 import org.opendaylight.yangtools.yang.model.api.type.InstanceIdentifierTypeDefinition;
  48 import org.opendaylight.yangtools.yang.model.api.type.Int16TypeDefinition;
  49 import org.opendaylight.yangtools.yang.model.api.type.Int32TypeDefinition;
  50 import org.opendaylight.yangtools.yang.model.api.type.Int64TypeDefinition;
  51 import org.opendaylight.yangtools.yang.model.api.type.Int8TypeDefinition;
  52 import org.opendaylight.yangtools.yang.model.api.type.LeafrefTypeDefinition;
  53 import org.opendaylight.yangtools.yang.model.api.type.RangeRestrictedTypeDefinition;
  54 import org.opendaylight.yangtools.yang.model.api.type.StringTypeDefinition;
  55 import org.opendaylight.yangtools.yang.model.api.type.Uint16TypeDefinition;
  56 import org.opendaylight.yangtools.yang.model.api.type.Uint32TypeDefinition;
  57 import org.opendaylight.yangtools.yang.model.api.type.Uint64TypeDefinition;
  58 import org.opendaylight.yangtools.yang.model.api.type.Uint8TypeDefinition;
  59 import org.opendaylight.yangtools.yang.model.api.type.UnionTypeDefinition;
  60 import org.opendaylight.yangtools.yang.model.util.type.BitsTypeBuilder;
  61 import org.opendaylight.yangtools.yang.model.util.type.EnumerationTypeBuilder;
  62 import org.opendaylight.yangtools.yang.model.util.type.InstanceIdentifierTypeBuilder;
  63 import org.opendaylight.yangtools.yang.model.util.type.InvalidLengthConstraintException;
  64 import org.opendaylight.yangtools.yang.model.util.type.InvalidRangeConstraintException;
  65 import org.opendaylight.yangtools.yang.model.util.type.LengthRestrictedTypeBuilder;
  66 import org.opendaylight.yangtools.yang.model.util.type.RangeRestrictedTypeBuilder;
  67 import org.opendaylight.yangtools.yang.model.util.type.RequireInstanceRestrictedTypeBuilder;
  68 import org.opendaylight.yangtools.yang.model.util.type.RestrictedTypes;
  69 import org.opendaylight.yangtools.yang.model.util.type.StringTypeBuilder;
  70 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseStatementSupport;
  71 import org.opendaylight.yangtools.yang.parser.spi.TypeNamespace;
  72 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
  73 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
  74 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
  75 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceAction;
  76 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceContext;
  77 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.Prerequisite;
  78 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
  79 import org.opendaylight.yangtools.yang.parser.spi.meta.StatementSupport;
  80 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  81 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
  82 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
  83 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  84 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  85 import org.slf4j.Logger;
  86 import org.slf4j.LoggerFactory;
  87
  88 abstract class AbstractTypeStatementSupport
  89         extends BaseStatementSupport<String, TypeStatement, EffectiveStatement<String, TypeStatement>> {
  90     private static final Logger LOG = LoggerFactory.getLogger(AbstractTypeStatementSupport.class);
  91
  92     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(
  93         YangStmtMapping.TYPE)
  94         .addOptional(YangStmtMapping.BASE)
  95         .addAny(YangStmtMapping.BIT)
  96         .addAny(YangStmtMapping.ENUM)
  97         .addOptional(YangStmtMapping.FRACTION_DIGITS)
  98         .addOptional(YangStmtMapping.LENGTH)
  99         .addOptional(YangStmtMapping.PATH)
 100         .addAny(YangStmtMapping.PATTERN)
 101         .addOptional(YangStmtMapping.RANGE)
 102         .addOptional(YangStmtMapping.REQUIRE_INSTANCE)
 103         .addAny(YangStmtMapping.TYPE)
 104         .build();
 105
 106     static final String BINARY = "binary";
 107     static final String BITS = "bits";
 108     static final String BOOLEAN = "boolean";
 109     static final String DECIMAL64 = "decimal64";
 110     static final String EMPTY = "empty";
 111     static final String ENUMERATION = "enumeration";
 112     static final String IDENTITY_REF = "identityref";
 113     static final String INSTANCE_IDENTIFIER = "instance-identifier";
 114     static final String INT8 = "int8";
 115     static final String INT16 = "int16";
 116     static final String INT32 = "int32";
 117     static final String INT64 = "int64";
 118     static final String LEAF_REF = "leafref";
 119     static final String STRING = "string";
 120     static final String UINT8 = "uint8";
 121     static final String UINT16 = "uint16";
 122     static final String UINT32 = "uint32";
 123     static final String UINT64 = "uint64";
 124     static final String UNION = "union";
 125
 126     private static final ImmutableMap<String, String> BUILT_IN_TYPES = ImmutableMap.<String, String>builder()
 127         .put(BINARY, BINARY)
 128         .put(BITS, BITS)
 129         .put(BOOLEAN, BOOLEAN)
 130         .put(DECIMAL64, DECIMAL64)
 131         .put(EMPTY, EMPTY)
 132         .put(ENUMERATION, ENUMERATION)
 133         .put(IDENTITY_REF,IDENTITY_REF)
 134         .put(INSTANCE_IDENTIFIER, INSTANCE_IDENTIFIER)
 135         .put(INT8, INT8)
 136         .put(INT16, INT16)
 137         .put(INT32, INT32)
 138         .put(INT64, INT64)
 139         .put(LEAF_REF, LEAF_REF)
 140         .put(STRING, STRING)
 141         .put(UINT8, UINT8)
 142         .put(UINT16, UINT16)
 143         .put(UINT32, UINT32)
 144         .put(UINT64, UINT64)
 145         .put(UNION, UNION)
 146         .build();
 147
 148     private static final ImmutableMap<String, StatementSupport<?, ?, ?>> ARGUMENT_SPECIFIC_SUPPORTS =
 149             ImmutableMap.<String, StatementSupport<?, ?, ?>>builder()
 150             .put(BITS, new BitsSpecificationSupport())
 151             .put(DECIMAL64, new Decimal64SpecificationSupport())
 152             .put(ENUMERATION, new EnumSpecificationSupport())
 153             .put(IDENTITY_REF, new IdentityRefSpecificationRFC6020Support())
 154             .put(INSTANCE_IDENTIFIER, new InstanceIdentifierSpecificationSupport())
 155             .put(LEAF_REF, new LeafrefSpecificationRFC6020Support())
 156             .put(UNION, new UnionSpecificationSupport())
 157             .build();
 158
 159     AbstractTypeStatementSupport() {
 160         super(YangStmtMapping.TYPE);
 161     }
 162
 163     @Override
 164     public final String parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
 165         return value;
 166     }
 167
 168     @Override
 169     public final void onFullDefinitionDeclared(
 170             final Mutable<String, TypeStatement, EffectiveStatement<String, TypeStatement>> stmt) {
 171         super.onFullDefinitionDeclared(stmt);
 172
 173         // if it is yang built-in type, no prerequisite is needed, so simply return
 174         if (BUILT_IN_TYPES.containsKey(stmt.getStatementArgument())) {
 175             return;
 176         }
 177
 178         final QName typeQName = StmtContextUtils.parseNodeIdentifier(stmt, stmt.getStatementArgument());
 179         final ModelActionBuilder typeAction = stmt.newInferenceAction(ModelProcessingPhase.EFFECTIVE_MODEL);
 180         final Prerequisite<StmtContext<?, ?, ?>> typePrereq = typeAction.requiresCtx(stmt, TypeNamespace.class,
 181                 typeQName, ModelProcessingPhase.EFFECTIVE_MODEL);
 182         typeAction.mutatesEffectiveCtx(stmt.getParentContext());
 183
 184         /*
 185          * If the type does not exist, throw new InferenceException.
 186          * Otherwise perform no operation.
 187          */
 188         typeAction.apply(new InferenceAction() {
 189             @Override
 190             public void apply(final InferenceContext ctx) {
 191                 // Intentional NOOP
 192             }
 193
 194             @Override
 195             public void prerequisiteFailed(final Collection<? extends Prerequisite<?>> failed) {
 196                 InferenceException.throwIf(failed.contains(typePrereq), stmt.getStatementSourceReference(),
 197                     "Type [%s] was not found.", typeQName);
 198             }
 199         });
 200     }
 201
 202     @Override
 203     public final String internArgument(final String rawArgument) {
 204         final String found;
 205         return (found = BUILT_IN_TYPES.get(rawArgument)) != null ? found : rawArgument;
 206     }
 207
 208     @Override
 209     public boolean hasArgumentSpecificSupports() {
 210         return !ARGUMENT_SPECIFIC_SUPPORTS.isEmpty();
 211     }
 212
 213     @Override
 214     public StatementSupport<?, ?, ?> getSupportSpecificForArgument(final String argument) {
 215         return ARGUMENT_SPECIFIC_SUPPORTS.get(argument);
 216     }
 217
 218     @Override
 219     protected final SubstatementValidator getSubstatementValidator() {
 220         return SUBSTATEMENT_VALIDATOR;
 221     }
 222
 223     @Override
 224     protected final TypeStatement createDeclared(final StmtContext<String, TypeStatement, ?> ctx,
 225             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
 226         return new RegularTypeStatement(ctx.coerceRawStatementArgument(), substatements);
 227     }
 228
 229     @Override
 230     protected final TypeStatement createEmptyDeclared(final StmtContext<String, TypeStatement, ?> ctx) {
 231         final TypeStatement builtin;
 232         return (builtin = BuiltinTypeStatement.lookup(ctx)) != null ? builtin
 233             : new EmptyTypeStatement(ctx.coerceRawStatementArgument());
 234     }
 235
 236     @Override
 237     protected EffectiveStatement<String, TypeStatement> createEffective(final Current<String, TypeStatement> stmt,
 238             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 239         // First look up the proper base type
 240         final TypeEffectiveStatement<TypeStatement> typeStmt = resolveType(stmt);
 241         if (substatements.isEmpty()) {
 242             return typeStmt;
 243         }
 244
 245         // Now instantiate the proper effective statement for that type
 246         final TypeDefinition<?> baseType = typeStmt.getTypeDefinition();
 247         final TypeStatement declared = stmt.declared();
 248         if (baseType instanceof BinaryTypeDefinition) {
 249             return createBinary(stmt, (BinaryTypeDefinition) baseType, declared, substatements);
 250         } else if (baseType instanceof BitsTypeDefinition) {
 251             return createBits(stmt, (BitsTypeDefinition) baseType, declared, substatements);
 252         } else if (baseType instanceof BooleanTypeDefinition) {
 253             return createBoolean(stmt, (BooleanTypeDefinition) baseType, declared, substatements);
 254         } else if (baseType instanceof DecimalTypeDefinition) {
 255             return createDecimal(stmt, (DecimalTypeDefinition) baseType, declared, substatements);
 256         } else if (baseType instanceof EmptyTypeDefinition) {
 257             return createEmpty(stmt, (EmptyTypeDefinition) baseType, declared, substatements);
 258         } else if (baseType instanceof EnumTypeDefinition) {
 259             return createEnum(stmt, (EnumTypeDefinition) baseType, declared, substatements);
 260         } else if (baseType instanceof IdentityrefTypeDefinition) {
 261             return createIdentityref(stmt, (IdentityrefTypeDefinition) baseType, declared, substatements);
 262         } else if (baseType instanceof InstanceIdentifierTypeDefinition) {
 263             return createInstanceIdentifier(stmt, (InstanceIdentifierTypeDefinition) baseType, declared, substatements);
 264         } else if (baseType instanceof Int8TypeDefinition) {
 265             return createIntegral(stmt, declared, substatements,
 266                 RestrictedTypes.newInt8Builder((Int8TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 267         } else if (baseType instanceof Int16TypeDefinition) {
 268             return createIntegral(stmt, declared, substatements,
 269                 RestrictedTypes.newInt16Builder((Int16TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 270         } else if (baseType instanceof Int32TypeDefinition) {
 271             return createIntegral(stmt, declared, substatements,
 272                 RestrictedTypes.newInt32Builder((Int32TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 273         } else if (baseType instanceof Int64TypeDefinition) {
 274             return createIntegral(stmt, declared, substatements,
 275                 RestrictedTypes.newInt64Builder((Int64TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 276         } else if (baseType instanceof LeafrefTypeDefinition) {
 277             return createLeafref(stmt, (LeafrefTypeDefinition) baseType, declared, substatements);
 278         } else if (baseType instanceof StringTypeDefinition) {
 279             return createString(stmt, (StringTypeDefinition) baseType, declared, substatements);
 280         } else if (baseType instanceof Uint8TypeDefinition) {
 281             return createIntegral(stmt, declared, substatements,
 282                 RestrictedTypes.newUint8Builder((Uint8TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 283         } else if (baseType instanceof Uint16TypeDefinition) {
 284             return createIntegral(stmt, declared, substatements,
 285                 RestrictedTypes.newUint16Builder((Uint16TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 286         } else if (baseType instanceof Uint32TypeDefinition) {
 287             return createIntegral(stmt, declared, substatements,
 288                 RestrictedTypes.newUint32Builder((Uint32TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 289         } else if (baseType instanceof Uint64TypeDefinition) {
 290             return createIntegral(stmt, declared, substatements,
 291                 RestrictedTypes.newUint64Builder((Uint64TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 292         } else if (baseType instanceof UnionTypeDefinition) {
 293             return createUnion(stmt, (UnionTypeDefinition) baseType, declared, substatements);
 294         } else {
 295             throw new IllegalStateException("Unhandled base type " + baseType);
 296         }
 297     }
 298
 299     static final SchemaPath typeEffectiveSchemaPath(final Current<?, ?> stmt) {
 300         final SchemaPath path = stmt.getSchemaPath();
 301         final SchemaPath parent = path.getParent();
 302         final QName parentQName = parent.getLastComponent();
 303         checkArgument(parentQName != null, "Path %s has an empty parent", path);
 304
 305         final QName qname = path.getLastComponent().bindTo(parentQName.getModule()).intern();
 306         return parent.createChild(qname);
 307     }
 308
 309     /**
 310      * Resolve type reference, as pointed to by the context's argument.
 311      *
 312      * @param ctx Statement context
 313      * @return Resolved type
 314      * @throws SourceException if the target type cannot be found
 315      */
 316     private static @NonNull TypeEffectiveStatement<TypeStatement> resolveType(final Current<String, ?> ctx) {
 317         final String argument = ctx.coerceArgument();
 318         switch (argument) {
 319             case BINARY:
 320                 return BuiltinEffectiveStatement.BINARY;
 321             case BOOLEAN:
 322                 return BuiltinEffectiveStatement.BOOLEAN;
 323             case EMPTY:
 324                 return BuiltinEffectiveStatement.EMPTY;
 325             case INSTANCE_IDENTIFIER:
 326                 return BuiltinEffectiveStatement.INSTANCE_IDENTIFIER;
 327             case INT8:
 328                 return BuiltinEffectiveStatement.INT8;
 329             case INT16:
 330                 return BuiltinEffectiveStatement.INT16;
 331             case INT32:
 332                 return BuiltinEffectiveStatement.INT32;
 333             case INT64:
 334                 return BuiltinEffectiveStatement.INT64;
 335             case STRING:
 336                 return BuiltinEffectiveStatement.STRING;
 337             case UINT8:
 338                 return BuiltinEffectiveStatement.UINT8;
 339             case UINT16:
 340                 return BuiltinEffectiveStatement.UINT16;
 341             case UINT32:
 342                 return BuiltinEffectiveStatement.UINT32;
 343             case UINT64:
 344                 return BuiltinEffectiveStatement.UINT64;
 345             default:
 346                 final QName qname = StmtContextUtils.parseNodeIdentifier(ctx.caerbannog(), argument);
 347                 final StmtContext<?, TypedefStatement, TypedefEffectiveStatement> typedef =
 348                         SourceException.throwIfNull(ctx.getFromNamespace(TypeNamespace.class, qname),
 349                             ctx.sourceReference(), "Type '%s' not found", qname);
 350                 return typedef.buildEffective().asTypeEffectiveStatement();
 351         }
 352     }
 353
 354     private static @NonNull TypeEffectiveStatement<TypeStatement> createBinary(final Current<?, ?> ctx,
 355             final BinaryTypeDefinition baseType, final TypeStatement declared,
 356             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 357         final LengthRestrictedTypeBuilder<BinaryTypeDefinition> builder =
 358                 RestrictedTypes.newBinaryBuilder(baseType, typeEffectiveSchemaPath(ctx));
 359
 360         for (EffectiveStatement<?, ?> stmt : substatements) {
 361             if (stmt instanceof LengthEffectiveStatement) {
 362                 final LengthEffectiveStatement length = (LengthEffectiveStatement)stmt;
 363
 364                 try {
 365                     builder.setLengthConstraint(length, length.argument());
 366                 } catch (IllegalStateException e) {
 367                     throw new SourceException(ctx.sourceReference(), e, "Multiple length constraints encountered");
 368                 } catch (InvalidLengthConstraintException e) {
 369                     throw new SourceException(ctx.sourceReference(), e, "Invalid length constraint %s",
 370                         length.argument());
 371                 }
 372             }
 373         }
 374
 375         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 376     }
 377
 378     private static @NonNull TypeEffectiveStatement<TypeStatement> createBits(final Current<?, ?> ctx,
 379             final BitsTypeDefinition baseType, final TypeStatement declared,
 380             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 381         final BitsTypeBuilder builder = RestrictedTypes.newBitsBuilder(baseType, ctx.getSchemaPath());
 382
 383         final YangVersion yangVersion = ctx.yangVersion();
 384         for (final EffectiveStatement<?, ?> stmt : substatements) {
 385             if (stmt instanceof BitEffectiveStatement) {
 386                 SourceException.throwIf(yangVersion != YangVersion.VERSION_1_1, ctx.sourceReference(),
 387                         "Restricted bits type is allowed only in YANG 1.1 version.");
 388                 final BitEffectiveStatement bitSubStmt = (BitEffectiveStatement) stmt;
 389
 390                 // FIXME: this looks like a duplicate of BitsSpecificationEffectiveStatement
 391                 final Optional<Uint32> declaredPosition = bitSubStmt.getDeclaredPosition();
 392                 final Uint32 effectivePos;
 393                 if (declaredPosition.isEmpty()) {
 394                     effectivePos = getBaseTypeBitPosition(bitSubStmt.argument(), baseType, ctx);
 395                 } else {
 396                     effectivePos = declaredPosition.get();
 397                 }
 398
 399                 builder.addBit(EffectiveTypeUtil.buildBit(bitSubStmt, effectivePos));
 400             }
 401         }
 402
 403         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 404     }
 405
 406     private static @NonNull TypeEffectiveStatement<TypeStatement> createBoolean(final Current<?, ?> ctx,
 407             final BooleanTypeDefinition baseType, final TypeStatement declared,
 408             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 409         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newBooleanBuilder(baseType,
 410             typeEffectiveSchemaPath(ctx)));
 411     }
 412
 413     private static @NonNull TypeEffectiveStatement<TypeStatement> createDecimal(final Current<?, ?> ctx,
 414             final DecimalTypeDefinition baseType, final TypeStatement declared,
 415             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 416         final RangeRestrictedTypeBuilder<DecimalTypeDefinition, BigDecimal> builder =
 417                 RestrictedTypes.newDecima64Builder(baseType, typeEffectiveSchemaPath(ctx));
 418
 419         for (EffectiveStatement<?, ?> stmt : substatements) {
 420             if (stmt instanceof RangeEffectiveStatement) {
 421                 final RangeEffectiveStatement range = (RangeEffectiveStatement) stmt;
 422                 builder.setRangeConstraint(range, range.argument());
 423             }
 424             if (stmt instanceof FractionDigitsEffectiveStatement) {
 425                 final Integer digits = ((FractionDigitsEffectiveStatement)stmt).argument();
 426                 SourceException.throwIf(baseType.getFractionDigits() != digits, ctx.sourceReference(),
 427                     "Cannot override fraction-digits from base type %s to %s", baseType, digits);
 428             }
 429         }
 430
 431         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 432     }
 433
 434     private static @NonNull TypeEffectiveStatement<TypeStatement> createEmpty(final Current<?, ?> ctx,
 435             final EmptyTypeDefinition baseType, final TypeStatement declared,
 436             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 437         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newEmptyBuilder(baseType,
 438             typeEffectiveSchemaPath(ctx)));
 439     }
 440
 441     private static @NonNull TypeEffectiveStatement<TypeStatement> createEnum(final Current<?, ?> ctx,
 442             final EnumTypeDefinition baseType, final TypeStatement declared,
 443             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 444         final EnumerationTypeBuilder builder = RestrictedTypes.newEnumerationBuilder(baseType, ctx.getSchemaPath());
 445
 446         final YangVersion yangVersion = ctx.yangVersion();
 447         for (final EffectiveStatement<?, ?> stmt : substatements) {
 448             if (stmt instanceof EnumEffectiveStatement) {
 449                 SourceException.throwIf(yangVersion != YangVersion.VERSION_1_1, ctx.sourceReference(),
 450                         "Restricted enumeration type is allowed only in YANG 1.1 version.");
 451
 452                 final EnumEffectiveStatement enumSubStmt = (EnumEffectiveStatement) stmt;
 453                 final Optional<Integer> declaredValue =
 454                         enumSubStmt.findFirstEffectiveSubstatementArgument(ValueEffectiveStatement.class);
 455                 final int effectiveValue;
 456                 if (declaredValue.isEmpty()) {
 457                     effectiveValue = getBaseTypeEnumValue(enumSubStmt.getDeclared().rawArgument(), baseType, ctx);
 458                 } else {
 459                     effectiveValue = declaredValue.orElseThrow();
 460                 }
 461
 462                 builder.addEnum(EffectiveTypeUtil.buildEnumPair(enumSubStmt, effectiveValue));
 463             }
 464         }
 465
 466         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 467     }
 468
 469     private static @NonNull TypeEffectiveStatement<TypeStatement> createIdentityref(final Current<?, ?> ctx,
 470             final IdentityrefTypeDefinition baseType, final TypeStatement declared,
 471             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 472         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newIdentityrefBuilder(baseType,
 473             typeEffectiveSchemaPath(ctx)));
 474     }
 475
 476     private static @NonNull TypeEffectiveStatement<TypeStatement> createInstanceIdentifier(
 477             final Current<?, ?> ctx, final InstanceIdentifierTypeDefinition baseType, final TypeStatement declared,
 478             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 479         final InstanceIdentifierTypeBuilder builder = RestrictedTypes.newInstanceIdentifierBuilder(baseType,
 480                     typeEffectiveSchemaPath(ctx));
 481
 482         for (EffectiveStatement<?, ?> stmt : substatements) {
 483             if (stmt instanceof RequireInstanceEffectiveStatement) {
 484                 builder.setRequireInstance(((RequireInstanceEffectiveStatement)stmt).argument());
 485             }
 486         }
 487
 488         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 489     }
 490
 491     private static <T extends RangeRestrictedTypeDefinition<T, N>, N extends Number & Comparable<N>>
 492         @NonNull TypeEffectiveStatement<TypeStatement> createIntegral(final Current<?, ?> ctx,
 493                 final TypeStatement declared, final ImmutableList<? extends EffectiveStatement<?, ?>> substatements,
 494                 final RangeRestrictedTypeBuilder<T, N> builder) {
 495         for (EffectiveStatement<?, ?> stmt : substatements) {
 496             if (stmt instanceof RangeEffectiveStatement) {
 497                 final RangeEffectiveStatement rangeStmt = (RangeEffectiveStatement)stmt;
 498                 builder.setRangeConstraint(rangeStmt, rangeStmt.argument());
 499             }
 500         }
 501
 502         try {
 503             return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 504         } catch (InvalidRangeConstraintException e) {
 505             throw new SourceException(ctx.sourceReference(), e, "Invalid range constraint: %s",
 506                 e.getOffendingRanges());
 507         }
 508     }
 509
 510     private static @NonNull TypeEffectiveStatement<TypeStatement> createLeafref(final Current<?, ?> ctx,
 511             final LeafrefTypeDefinition baseType, final TypeStatement declared,
 512             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 513         final RequireInstanceRestrictedTypeBuilder<LeafrefTypeDefinition> builder =
 514                 RestrictedTypes.newLeafrefBuilder(baseType, AbstractTypeStatementSupport.typeEffectiveSchemaPath(ctx));
 515
 516         for (final EffectiveStatement<?, ?> stmt : substatements) {
 517             if (stmt instanceof RequireInstanceEffectiveStatement) {
 518                 builder.setRequireInstance(((RequireInstanceEffectiveStatement) stmt).argument());
 519             }
 520         }
 521         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 522     }
 523
 524     private static @NonNull TypeEffectiveStatement<TypeStatement> createString(final Current<?, ?> ctx,
 525             final StringTypeDefinition baseType, final TypeStatement declared,
 526             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 527         final StringTypeBuilder builder = RestrictedTypes.newStringBuilder(baseType,
 528             AbstractTypeStatementSupport.typeEffectiveSchemaPath(ctx));
 529
 530         for (EffectiveStatement<?, ?> stmt : substatements) {
 531             if (stmt instanceof LengthEffectiveStatement) {
 532                 final LengthEffectiveStatement length = (LengthEffectiveStatement)stmt;
 533
 534                 try {
 535                     builder.setLengthConstraint(length, length.argument());
 536                 } catch (IllegalStateException e) {
 537                     throw new SourceException(ctx.sourceReference(), e, "Multiple length constraints encountered");
 538                 } catch (InvalidLengthConstraintException e) {
 539                     throw new SourceException(ctx.sourceReference(), e, "Invalid length constraint %s",
 540                         length.argument());
 541                 }
 542             }
 543             if (stmt instanceof PatternEffectiveStatement) {
 544                 builder.addPatternConstraint((PatternEffectiveStatement) stmt);
 545             }
 546         }
 547
 548         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 549     }
 550
 551     private static @NonNull TypeEffectiveStatement<TypeStatement> createUnion(final Current<?, ?> ctx,
 552             final UnionTypeDefinition baseType, final TypeStatement declared,
 553             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 554         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newUnionBuilder(baseType,
 555             typeEffectiveSchemaPath(ctx)));
 556     }
 557
 558     private static Uint32 getBaseTypeBitPosition(final String bitName, final BitsTypeDefinition baseType,
 559             final Current<?, ?> ctx) {
 560         for (Bit baseTypeBit : baseType.getBits()) {
 561             if (bitName.equals(baseTypeBit.getName())) {
 562                 return baseTypeBit.getPosition();
 563             }
 564         }
 565
 566         throw new SourceException(ctx.sourceReference(), "Bit '%s' is not a subset of its base bits type %s.",
 567             bitName, baseType.getQName());
 568     }
 569
 570     private static int getBaseTypeEnumValue(final String enumName, final EnumTypeDefinition baseType,
 571             final Current<?, ?> ctx) {
 572         for (EnumPair baseTypeEnumPair : baseType.getValues()) {
 573             if (enumName.equals(baseTypeEnumPair.getName())) {
 574                 return baseTypeEnumPair.getValue();
 575             }
 576         }
 577
 578         throw new SourceException(ctx.sourceReference(), "Enum '%s' is not a subset of its base enumeration type %s.",
 579             enumName, baseType.getQName());
 580     }
 581 }