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 org.eclipse.jdt.annotation.NonNull;
  17 import org.opendaylight.yangtools.yang.common.QName;
  18 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  19 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
  20 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  21 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
  22 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  23 import org.opendaylight.yangtools.yang.model.api.stmt.BitEffectiveStatement;
  24 import org.opendaylight.yangtools.yang.model.api.stmt.EnumEffectiveStatement;
  25 import org.opendaylight.yangtools.yang.model.api.stmt.FractionDigitsEffectiveStatement;
  26 import org.opendaylight.yangtools.yang.model.api.stmt.LengthEffectiveStatement;
  27 import org.opendaylight.yangtools.yang.model.api.stmt.PatternEffectiveStatement;
  28 import org.opendaylight.yangtools.yang.model.api.stmt.RangeEffectiveStatement;
  29 import org.opendaylight.yangtools.yang.model.api.stmt.RequireInstanceEffectiveStatement;
  30 import org.opendaylight.yangtools.yang.model.api.stmt.TypeEffectiveStatement;
  31 import org.opendaylight.yangtools.yang.model.api.stmt.TypeStatement;
  32 import org.opendaylight.yangtools.yang.model.api.stmt.TypedefEffectiveStatement;
  33 import org.opendaylight.yangtools.yang.model.api.stmt.TypedefStatement;
  34 import org.opendaylight.yangtools.yang.model.api.type.BinaryTypeDefinition;
  35 import org.opendaylight.yangtools.yang.model.api.type.BitsTypeDefinition;
  36 import org.opendaylight.yangtools.yang.model.api.type.BitsTypeDefinition.Bit;
  37 import org.opendaylight.yangtools.yang.model.api.type.BooleanTypeDefinition;
  38 import org.opendaylight.yangtools.yang.model.api.type.DecimalTypeDefinition;
  39 import org.opendaylight.yangtools.yang.model.api.type.EmptyTypeDefinition;
  40 import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition;
  41 import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition.EnumPair;
  42 import org.opendaylight.yangtools.yang.model.api.type.IdentityrefTypeDefinition;
  43 import org.opendaylight.yangtools.yang.model.api.type.InstanceIdentifierTypeDefinition;
  44 import org.opendaylight.yangtools.yang.model.api.type.Int16TypeDefinition;
  45 import org.opendaylight.yangtools.yang.model.api.type.Int32TypeDefinition;
  46 import org.opendaylight.yangtools.yang.model.api.type.Int64TypeDefinition;
  47 import org.opendaylight.yangtools.yang.model.api.type.Int8TypeDefinition;
  48 import org.opendaylight.yangtools.yang.model.api.type.LeafrefTypeDefinition;
  49 import org.opendaylight.yangtools.yang.model.api.type.RangeRestrictedTypeDefinition;
  50 import org.opendaylight.yangtools.yang.model.api.type.StringTypeDefinition;
  51 import org.opendaylight.yangtools.yang.model.api.type.Uint16TypeDefinition;
  52 import org.opendaylight.yangtools.yang.model.api.type.Uint32TypeDefinition;
  53 import org.opendaylight.yangtools.yang.model.api.type.Uint64TypeDefinition;
  54 import org.opendaylight.yangtools.yang.model.api.type.Uint8TypeDefinition;
  55 import org.opendaylight.yangtools.yang.model.api.type.UnionTypeDefinition;
  56 import org.opendaylight.yangtools.yang.model.util.type.BitsTypeBuilder;
  57 import org.opendaylight.yangtools.yang.model.util.type.EnumerationTypeBuilder;
  58 import org.opendaylight.yangtools.yang.model.util.type.InstanceIdentifierTypeBuilder;
  59 import org.opendaylight.yangtools.yang.model.util.type.InvalidLengthConstraintException;
  60 import org.opendaylight.yangtools.yang.model.util.type.InvalidRangeConstraintException;
  61 import org.opendaylight.yangtools.yang.model.util.type.LengthRestrictedTypeBuilder;
  62 import org.opendaylight.yangtools.yang.model.util.type.RangeRestrictedTypeBuilder;
  63 import org.opendaylight.yangtools.yang.model.util.type.RequireInstanceRestrictedTypeBuilder;
  64 import org.opendaylight.yangtools.yang.model.util.type.RestrictedTypes;
  65 import org.opendaylight.yangtools.yang.model.util.type.StringTypeBuilder;
  66 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseStatementSupport;
  67 import org.opendaylight.yangtools.yang.parser.spi.TypeNamespace;
  68 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx;
  69 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
  70 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
  71 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
  72 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceAction;
  73 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceContext;
  74 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.Prerequisite;
  75 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
  76 import org.opendaylight.yangtools.yang.parser.spi.meta.StatementSupport;
  77 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  78 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
  79 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
  80 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  81 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  82 import org.slf4j.Logger;
  83 import org.slf4j.LoggerFactory;
  84
  85 abstract class AbstractTypeStatementSupport
  86         extends BaseStatementSupport<String, TypeStatement, EffectiveStatement<String, TypeStatement>> {
  87     private static final Logger LOG = LoggerFactory.getLogger(AbstractTypeStatementSupport.class);
  88
  89     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(
  90         YangStmtMapping.TYPE)
  91         .addOptional(YangStmtMapping.BASE)
  92         .addAny(YangStmtMapping.BIT)
  93         .addAny(YangStmtMapping.ENUM)
  94         .addOptional(YangStmtMapping.FRACTION_DIGITS)
  95         .addOptional(YangStmtMapping.LENGTH)
  96         .addOptional(YangStmtMapping.PATH)
  97         .addAny(YangStmtMapping.PATTERN)
  98         .addOptional(YangStmtMapping.RANGE)
  99         .addOptional(YangStmtMapping.REQUIRE_INSTANCE)
 100         .addAny(YangStmtMapping.TYPE)
 101         .build();
 102
 103     static final String BINARY = "binary";
 104     static final String BITS = "bits";
 105     static final String BOOLEAN = "boolean";
 106     static final String DECIMAL64 = "decimal64";
 107     static final String EMPTY = "empty";
 108     static final String ENUMERATION = "enumeration";
 109     static final String IDENTITY_REF = "identityref";
 110     static final String INSTANCE_IDENTIFIER = "instance-identifier";
 111     static final String INT8 = "int8";
 112     static final String INT16 = "int16";
 113     static final String INT32 = "int32";
 114     static final String INT64 = "int64";
 115     static final String LEAF_REF = "leafref";
 116     static final String STRING = "string";
 117     static final String UINT8 = "uint8";
 118     static final String UINT16 = "uint16";
 119     static final String UINT32 = "uint32";
 120     static final String UINT64 = "uint64";
 121     static final String UNION = "union";
 122
 123     private static final ImmutableMap<String, String> BUILT_IN_TYPES = ImmutableMap.<String, String>builder()
 124         .put(BINARY, BINARY)
 125         .put(BITS, BITS)
 126         .put(BOOLEAN, BOOLEAN)
 127         .put(DECIMAL64, DECIMAL64)
 128         .put(EMPTY, EMPTY)
 129         .put(ENUMERATION, ENUMERATION)
 130         .put(IDENTITY_REF,IDENTITY_REF)
 131         .put(INSTANCE_IDENTIFIER, INSTANCE_IDENTIFIER)
 132         .put(INT8, INT8)
 133         .put(INT16, INT16)
 134         .put(INT32, INT32)
 135         .put(INT64, INT64)
 136         .put(LEAF_REF, LEAF_REF)
 137         .put(STRING, STRING)
 138         .put(UINT8, UINT8)
 139         .put(UINT16, UINT16)
 140         .put(UINT32, UINT32)
 141         .put(UINT64, UINT64)
 142         .put(UNION, UNION)
 143         .build();
 144
 145     private static final ImmutableMap<String, StatementSupport<?, ?, ?>> ARGUMENT_SPECIFIC_SUPPORTS =
 146             ImmutableMap.<String, StatementSupport<?, ?, ?>>builder()
 147             .put(BITS, new BitsSpecificationSupport())
 148             .put(DECIMAL64, new Decimal64SpecificationSupport())
 149             .put(ENUMERATION, new EnumSpecificationSupport())
 150             .put(IDENTITY_REF, new IdentityRefSpecificationRFC6020Support())
 151             .put(INSTANCE_IDENTIFIER, new InstanceIdentifierSpecificationSupport())
 152             .put(LEAF_REF, new LeafrefSpecificationRFC6020Support())
 153             .put(UNION, new UnionSpecificationSupport())
 154             .build();
 155
 156     AbstractTypeStatementSupport() {
 157         super(YangStmtMapping.TYPE);
 158     }
 159
 160     @Override
 161     public final String parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
 162         return value;
 163     }
 164
 165     @Override
 166     public final void onFullDefinitionDeclared(
 167             final Mutable<String, TypeStatement, EffectiveStatement<String, TypeStatement>> stmt) {
 168         super.onFullDefinitionDeclared(stmt);
 169
 170         // if it is yang built-in type, no prerequisite is needed, so simply return
 171         if (BUILT_IN_TYPES.containsKey(stmt.argument())) {
 172             return;
 173         }
 174
 175         final QName typeQName = StmtContextUtils.parseNodeIdentifier(stmt, stmt.argument());
 176         final ModelActionBuilder typeAction = stmt.newInferenceAction(ModelProcessingPhase.EFFECTIVE_MODEL);
 177         final Prerequisite<StmtContext<?, ?, ?>> typePrereq = typeAction.requiresCtx(stmt, TypeNamespace.class,
 178                 typeQName, ModelProcessingPhase.EFFECTIVE_MODEL);
 179         typeAction.mutatesEffectiveCtx(stmt.getParentContext());
 180
 181         /*
 182          * If the type does not exist, throw new InferenceException.
 183          * Otherwise perform no operation.
 184          */
 185         typeAction.apply(new InferenceAction() {
 186             @Override
 187             public void apply(final InferenceContext ctx) {
 188                 // Intentional NOOP
 189             }
 190
 191             @Override
 192             public void prerequisiteFailed(final Collection<? extends Prerequisite<?>> failed) {
 193                 InferenceException.throwIf(failed.contains(typePrereq), stmt, "Type [%s] was not found.", typeQName);
 194             }
 195         });
 196     }
 197
 198     @Override
 199     public final String internArgument(final String rawArgument) {
 200         final String found;
 201         return (found = BUILT_IN_TYPES.get(rawArgument)) != null ? found : rawArgument;
 202     }
 203
 204     @Override
 205     public boolean hasArgumentSpecificSupports() {
 206         return !ARGUMENT_SPECIFIC_SUPPORTS.isEmpty();
 207     }
 208
 209     @Override
 210     public StatementSupport<?, ?, ?> getSupportSpecificForArgument(final String argument) {
 211         return ARGUMENT_SPECIFIC_SUPPORTS.get(argument);
 212     }
 213
 214     @Override
 215     protected final SubstatementValidator getSubstatementValidator() {
 216         return SUBSTATEMENT_VALIDATOR;
 217     }
 218
 219     @Override
 220     protected final TypeStatement createDeclared(final StmtContext<String, TypeStatement, ?> ctx,
 221             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
 222         return new RegularTypeStatement(ctx.getRawArgument(), substatements);
 223     }
 224
 225     @Override
 226     protected final TypeStatement createEmptyDeclared(final StmtContext<String, TypeStatement, ?> ctx) {
 227         final TypeStatement builtin;
 228         return (builtin = BuiltinTypeStatement.lookup(ctx)) != null ? builtin
 229             : new EmptyTypeStatement(ctx.getRawArgument());
 230     }
 231
 232     @Override
 233     protected EffectiveStatement<String, TypeStatement> createEffective(final Current<String, TypeStatement> stmt,
 234             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 235         // First look up the proper base type
 236         final TypeEffectiveStatement<TypeStatement> typeStmt = resolveType(stmt);
 237         if (substatements.isEmpty()) {
 238             return typeStmt;
 239         }
 240
 241         // Now instantiate the proper effective statement for that type
 242         final TypeDefinition<?> baseType = typeStmt.getTypeDefinition();
 243         final TypeStatement declared = stmt.declared();
 244         if (baseType instanceof BinaryTypeDefinition) {
 245             return createBinary(stmt, (BinaryTypeDefinition) baseType, declared, substatements);
 246         } else if (baseType instanceof BitsTypeDefinition) {
 247             return createBits(stmt, (BitsTypeDefinition) baseType, declared, substatements);
 248         } else if (baseType instanceof BooleanTypeDefinition) {
 249             return createBoolean(stmt, (BooleanTypeDefinition) baseType, declared, substatements);
 250         } else if (baseType instanceof DecimalTypeDefinition) {
 251             return createDecimal(stmt, (DecimalTypeDefinition) baseType, declared, substatements);
 252         } else if (baseType instanceof EmptyTypeDefinition) {
 253             return createEmpty(stmt, (EmptyTypeDefinition) baseType, declared, substatements);
 254         } else if (baseType instanceof EnumTypeDefinition) {
 255             return createEnum(stmt, (EnumTypeDefinition) baseType, declared, substatements);
 256         } else if (baseType instanceof IdentityrefTypeDefinition) {
 257             return createIdentityref(stmt, (IdentityrefTypeDefinition) baseType, declared, substatements);
 258         } else if (baseType instanceof InstanceIdentifierTypeDefinition) {
 259             return createInstanceIdentifier(stmt, (InstanceIdentifierTypeDefinition) baseType, declared, substatements);
 260         } else if (baseType instanceof Int8TypeDefinition) {
 261             return createIntegral(stmt, declared, substatements,
 262                 RestrictedTypes.newInt8Builder((Int8TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 263         } else if (baseType instanceof Int16TypeDefinition) {
 264             return createIntegral(stmt, declared, substatements,
 265                 RestrictedTypes.newInt16Builder((Int16TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 266         } else if (baseType instanceof Int32TypeDefinition) {
 267             return createIntegral(stmt, declared, substatements,
 268                 RestrictedTypes.newInt32Builder((Int32TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 269         } else if (baseType instanceof Int64TypeDefinition) {
 270             return createIntegral(stmt, declared, substatements,
 271                 RestrictedTypes.newInt64Builder((Int64TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 272         } else if (baseType instanceof LeafrefTypeDefinition) {
 273             return createLeafref(stmt, (LeafrefTypeDefinition) baseType, declared, substatements);
 274         } else if (baseType instanceof StringTypeDefinition) {
 275             return createString(stmt, (StringTypeDefinition) baseType, declared, substatements);
 276         } else if (baseType instanceof Uint8TypeDefinition) {
 277             return createIntegral(stmt, declared, substatements,
 278                 RestrictedTypes.newUint8Builder((Uint8TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 279         } else if (baseType instanceof Uint16TypeDefinition) {
 280             return createIntegral(stmt, declared, substatements,
 281                 RestrictedTypes.newUint16Builder((Uint16TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 282         } else if (baseType instanceof Uint32TypeDefinition) {
 283             return createIntegral(stmt, declared, substatements,
 284                 RestrictedTypes.newUint32Builder((Uint32TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 285         } else if (baseType instanceof Uint64TypeDefinition) {
 286             return createIntegral(stmt, declared, substatements,
 287                 RestrictedTypes.newUint64Builder((Uint64TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 288         } else if (baseType instanceof UnionTypeDefinition) {
 289             return createUnion(stmt, (UnionTypeDefinition) baseType, declared, substatements);
 290         } else {
 291             throw new IllegalStateException("Unhandled base type " + baseType);
 292         }
 293     }
 294
 295     static final SchemaPath typeEffectiveSchemaPath(final Current<?, ?> stmt) {
 296         final SchemaPath path = stmt.getSchemaPath();
 297         final SchemaPath parent = path.getParent();
 298         final QName parentQName = parent.getLastComponent();
 299         checkArgument(parentQName != null, "Path %s has an empty parent", path);
 300
 301         final QName qname = path.getLastComponent().bindTo(parentQName.getModule()).intern();
 302         return parent.createChild(qname);
 303     }
 304
 305     /**
 306      * Resolve type reference, as pointed to by the context's argument.
 307      *
 308      * @param ctx Statement context
 309      * @return Resolved type
 310      * @throws SourceException if the target type cannot be found
 311      */
 312     private static @NonNull TypeEffectiveStatement<TypeStatement> resolveType(final Current<String, ?> ctx) {
 313         final String argument = ctx.getArgument();
 314         switch (argument) {
 315             case BINARY:
 316                 return BuiltinEffectiveStatement.BINARY;
 317             case BOOLEAN:
 318                 return BuiltinEffectiveStatement.BOOLEAN;
 319             case EMPTY:
 320                 return BuiltinEffectiveStatement.EMPTY;
 321             case INSTANCE_IDENTIFIER:
 322                 return BuiltinEffectiveStatement.INSTANCE_IDENTIFIER;
 323             case INT8:
 324                 return BuiltinEffectiveStatement.INT8;
 325             case INT16:
 326                 return BuiltinEffectiveStatement.INT16;
 327             case INT32:
 328                 return BuiltinEffectiveStatement.INT32;
 329             case INT64:
 330                 return BuiltinEffectiveStatement.INT64;
 331             case STRING:
 332                 return BuiltinEffectiveStatement.STRING;
 333             case UINT8:
 334                 return BuiltinEffectiveStatement.UINT8;
 335             case UINT16:
 336                 return BuiltinEffectiveStatement.UINT16;
 337             case UINT32:
 338                 return BuiltinEffectiveStatement.UINT32;
 339             case UINT64:
 340                 return BuiltinEffectiveStatement.UINT64;
 341             default:
 342                 // FIXME: YANGTOOLS-1198: this lookup needs to be done during inference and a replica needs to be
 343                 //                        stored in a local namespace.
 344                 final QName qname = StmtContextUtils.parseNodeIdentifier(ctx.caerbannog(), argument);
 345                 final StmtContext<?, TypedefStatement, TypedefEffectiveStatement> typedef = SourceException.throwIfNull(
 346                     ctx.getFromNamespace(TypeNamespace.class, qname), ctx, "Type '%s' not found", qname);
 347                 return typedef.buildEffective().asTypeEffectiveStatement();
 348         }
 349     }
 350
 351     private static @NonNull TypeEffectiveStatement<TypeStatement> createBinary(final Current<?, ?> ctx,
 352             final BinaryTypeDefinition baseType, final TypeStatement declared,
 353             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 354         final LengthRestrictedTypeBuilder<BinaryTypeDefinition> builder =
 355                 RestrictedTypes.newBinaryBuilder(baseType, typeEffectiveSchemaPath(ctx));
 356
 357         for (EffectiveStatement<?, ?> stmt : substatements) {
 358             if (stmt instanceof LengthEffectiveStatement) {
 359                 final LengthEffectiveStatement length = (LengthEffectiveStatement)stmt;
 360
 361                 try {
 362                     builder.setLengthConstraint(length, length.argument());
 363                 } catch (IllegalStateException e) {
 364                     throw new SourceException(ctx, e, "Multiple length constraints encountered");
 365                 } catch (InvalidLengthConstraintException e) {
 366                     throw new SourceException(ctx, e, "Invalid length constraint %s", length.argument());
 367                 }
 368             }
 369         }
 370
 371         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 372     }
 373
 374     private @NonNull TypeEffectiveStatement<TypeStatement> createBits(final Current<?, ?> ctx,
 375             final BitsTypeDefinition baseType, final TypeStatement declared,
 376             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 377         final BitsTypeBuilder builder = RestrictedTypes.newBitsBuilder(baseType, ctx.getSchemaPath());
 378
 379         for (final EffectiveStatement<?, ?> stmt : substatements) {
 380             if (stmt instanceof BitEffectiveStatement) {
 381                 builder.addBit(addRestrictedBit(ctx, baseType, (BitEffectiveStatement) stmt));
 382             }
 383         }
 384
 385         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 386     }
 387
 388     abstract @NonNull Bit addRestrictedBit(@NonNull EffectiveStmtCtx stmt, @NonNull BitsTypeDefinition base,
 389         @NonNull BitEffectiveStatement bit);
 390
 391     private static @NonNull TypeEffectiveStatement<TypeStatement> createBoolean(final Current<?, ?> ctx,
 392             final BooleanTypeDefinition baseType, final TypeStatement declared,
 393             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 394         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newBooleanBuilder(baseType,
 395             typeEffectiveSchemaPath(ctx)));
 396     }
 397
 398     private static @NonNull TypeEffectiveStatement<TypeStatement> createDecimal(final Current<?, ?> ctx,
 399             final DecimalTypeDefinition baseType, final TypeStatement declared,
 400             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 401         final RangeRestrictedTypeBuilder<DecimalTypeDefinition, BigDecimal> builder =
 402                 RestrictedTypes.newDecima64Builder(baseType, typeEffectiveSchemaPath(ctx));
 403
 404         for (EffectiveStatement<?, ?> stmt : substatements) {
 405             if (stmt instanceof RangeEffectiveStatement) {
 406                 final RangeEffectiveStatement range = (RangeEffectiveStatement) stmt;
 407                 builder.setRangeConstraint(range, range.argument());
 408             }
 409             if (stmt instanceof FractionDigitsEffectiveStatement) {
 410                 final Integer digits = ((FractionDigitsEffectiveStatement)stmt).argument();
 411                 SourceException.throwIf(baseType.getFractionDigits() != digits, ctx,
 412                     "Cannot override fraction-digits from base type %s to %s", baseType, digits);
 413             }
 414         }
 415
 416         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 417     }
 418
 419     private static @NonNull TypeEffectiveStatement<TypeStatement> createEmpty(final Current<?, ?> ctx,
 420             final EmptyTypeDefinition baseType, final TypeStatement declared,
 421             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 422         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newEmptyBuilder(baseType,
 423             typeEffectiveSchemaPath(ctx)));
 424     }
 425
 426     private @NonNull TypeEffectiveStatement<TypeStatement> createEnum(final Current<?, ?> ctx,
 427             final EnumTypeDefinition baseType, final TypeStatement declared,
 428             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 429         final EnumerationTypeBuilder builder = RestrictedTypes.newEnumerationBuilder(baseType, ctx.getSchemaPath());
 430
 431         for (final EffectiveStatement<?, ?> stmt : substatements) {
 432             if (stmt instanceof EnumEffectiveStatement) {
 433                 builder.addEnum(addRestrictedEnum(ctx, baseType, (EnumEffectiveStatement) stmt));
 434             }
 435         }
 436
 437         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 438     }
 439
 440     abstract @NonNull EnumPair addRestrictedEnum(@NonNull EffectiveStmtCtx stmt, @NonNull EnumTypeDefinition base,
 441         @NonNull EnumEffectiveStatement enumStmt);
 442
 443     private static @NonNull TypeEffectiveStatement<TypeStatement> createIdentityref(final Current<?, ?> ctx,
 444             final IdentityrefTypeDefinition baseType, final TypeStatement declared,
 445             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 446         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newIdentityrefBuilder(baseType,
 447             typeEffectiveSchemaPath(ctx)));
 448     }
 449
 450     private static @NonNull TypeEffectiveStatement<TypeStatement> createInstanceIdentifier(
 451             final Current<?, ?> ctx, final InstanceIdentifierTypeDefinition baseType, final TypeStatement declared,
 452             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 453         final InstanceIdentifierTypeBuilder builder = RestrictedTypes.newInstanceIdentifierBuilder(baseType,
 454                     typeEffectiveSchemaPath(ctx));
 455
 456         for (EffectiveStatement<?, ?> stmt : substatements) {
 457             if (stmt instanceof RequireInstanceEffectiveStatement) {
 458                 builder.setRequireInstance(((RequireInstanceEffectiveStatement)stmt).argument());
 459             }
 460         }
 461
 462         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 463     }
 464
 465     private static <T extends RangeRestrictedTypeDefinition<T, N>, N extends Number & Comparable<N>>
 466         @NonNull TypeEffectiveStatement<TypeStatement> createIntegral(final Current<?, ?> ctx,
 467                 final TypeStatement declared, final ImmutableList<? extends EffectiveStatement<?, ?>> substatements,
 468                 final RangeRestrictedTypeBuilder<T, N> builder) {
 469         for (EffectiveStatement<?, ?> stmt : substatements) {
 470             if (stmt instanceof RangeEffectiveStatement) {
 471                 final RangeEffectiveStatement rangeStmt = (RangeEffectiveStatement)stmt;
 472                 builder.setRangeConstraint(rangeStmt, rangeStmt.argument());
 473             }
 474         }
 475
 476         try {
 477             return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 478         } catch (InvalidRangeConstraintException e) {
 479             throw new SourceException(ctx, e, "Invalid range constraint: %s", e.getOffendingRanges());
 480         }
 481     }
 482
 483     private static @NonNull TypeEffectiveStatement<TypeStatement> createLeafref(final Current<?, ?> ctx,
 484             final LeafrefTypeDefinition baseType, final TypeStatement declared,
 485             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 486         final RequireInstanceRestrictedTypeBuilder<LeafrefTypeDefinition> builder =
 487                 RestrictedTypes.newLeafrefBuilder(baseType, AbstractTypeStatementSupport.typeEffectiveSchemaPath(ctx));
 488
 489         for (final EffectiveStatement<?, ?> stmt : substatements) {
 490             if (stmt instanceof RequireInstanceEffectiveStatement) {
 491                 builder.setRequireInstance(((RequireInstanceEffectiveStatement) stmt).argument());
 492             }
 493         }
 494         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 495     }
 496
 497     private static @NonNull TypeEffectiveStatement<TypeStatement> createString(final Current<?, ?> ctx,
 498             final StringTypeDefinition baseType, final TypeStatement declared,
 499             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 500         final StringTypeBuilder builder = RestrictedTypes.newStringBuilder(baseType,
 501             AbstractTypeStatementSupport.typeEffectiveSchemaPath(ctx));
 502
 503         for (EffectiveStatement<?, ?> stmt : substatements) {
 504             if (stmt instanceof LengthEffectiveStatement) {
 505                 final LengthEffectiveStatement length = (LengthEffectiveStatement)stmt;
 506
 507                 try {
 508                     builder.setLengthConstraint(length, length.argument());
 509                 } catch (IllegalStateException e) {
 510                     throw new SourceException(ctx, e, "Multiple length constraints encountered");
 511                 } catch (InvalidLengthConstraintException e) {
 512                     throw new SourceException(ctx, e, "Invalid length constraint %s", length.argument());
 513                 }
 514             }
 515             if (stmt instanceof PatternEffectiveStatement) {
 516                 builder.addPatternConstraint((PatternEffectiveStatement) stmt);
 517             }
 518         }
 519
 520         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 521     }
 522
 523     private static @NonNull TypeEffectiveStatement<TypeStatement> createUnion(final Current<?, ?> ctx,
 524             final UnionTypeDefinition baseType, final TypeStatement declared,
 525             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 526         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newUnionBuilder(baseType,
 527             typeEffectiveSchemaPath(ctx)));
 528     }
 529 }