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.Empty;
  18 import org.opendaylight.yangtools.yang.common.QName;
  19 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  20 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
  21 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  22 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
  23 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  24 import org.opendaylight.yangtools.yang.model.api.stmt.BitEffectiveStatement;
  25 import org.opendaylight.yangtools.yang.model.api.stmt.EnumEffectiveStatement;
  26 import org.opendaylight.yangtools.yang.model.api.stmt.FractionDigitsEffectiveStatement;
  27 import org.opendaylight.yangtools.yang.model.api.stmt.LengthEffectiveStatement;
  28 import org.opendaylight.yangtools.yang.model.api.stmt.PatternEffectiveStatement;
  29 import org.opendaylight.yangtools.yang.model.api.stmt.RangeEffectiveStatement;
  30 import org.opendaylight.yangtools.yang.model.api.stmt.RequireInstanceEffectiveStatement;
  31 import org.opendaylight.yangtools.yang.model.api.stmt.TypeEffectiveStatement;
  32 import org.opendaylight.yangtools.yang.model.api.stmt.TypeStatement;
  33 import org.opendaylight.yangtools.yang.model.api.stmt.TypedefEffectiveStatement;
  34 import org.opendaylight.yangtools.yang.model.api.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             // FIXME: consider populating BaseTypeNamespace here, which could be done quite efficiently, moving the
 173             //        logic from resolveType()
 174             return;
 175         }
 176
 177         final QName typeQName = StmtContextUtils.parseNodeIdentifier(stmt, stmt.argument());
 178         final ModelActionBuilder typeAction = stmt.newInferenceAction(ModelProcessingPhase.EFFECTIVE_MODEL);
 179         final Prerequisite<StmtContext<?, ?, ?>> typePrereq = typeAction.requiresCtx(stmt, TypeNamespace.class,
 180                 typeQName, ModelProcessingPhase.EFFECTIVE_MODEL);
 181         typeAction.mutatesEffectiveCtx(stmt.getParentContext());
 182
 183         /*
 184          * If the type does not exist, throw an InferenceException.
 185          * If the type exists, store a reference to it in BaseTypeNamespace.
 186          */
 187         typeAction.apply(new InferenceAction() {
 188             @Override
 189             public void apply(final InferenceContext ctx) {
 190                 stmt.addToNs(BaseTypeNamespace.class, Empty.getInstance(), typePrereq.resolve(ctx));
 191             }
 192
 193             @Override
 194             public void prerequisiteFailed(final Collection<? extends Prerequisite<?>> failed) {
 195                 InferenceException.throwIf(failed.contains(typePrereq), stmt, "Type [%s] was not found.", typeQName);
 196             }
 197         });
 198     }
 199
 200     @Override
 201     public final String internArgument(final String rawArgument) {
 202         final String found;
 203         return (found = BUILT_IN_TYPES.get(rawArgument)) != null ? found : rawArgument;
 204     }
 205
 206     @Override
 207     public boolean hasArgumentSpecificSupports() {
 208         return !ARGUMENT_SPECIFIC_SUPPORTS.isEmpty();
 209     }
 210
 211     @Override
 212     public StatementSupport<?, ?, ?> getSupportSpecificForArgument(final String argument) {
 213         return ARGUMENT_SPECIFIC_SUPPORTS.get(argument);
 214     }
 215
 216     @Override
 217     protected final SubstatementValidator getSubstatementValidator() {
 218         return SUBSTATEMENT_VALIDATOR;
 219     }
 220
 221     @Override
 222     protected final TypeStatement createDeclared(final StmtContext<String, TypeStatement, ?> ctx,
 223             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
 224         return new RegularTypeStatement(ctx.getRawArgument(), substatements);
 225     }
 226
 227     @Override
 228     protected final TypeStatement createEmptyDeclared(final StmtContext<String, TypeStatement, ?> ctx) {
 229         final TypeStatement builtin;
 230         return (builtin = BuiltinTypeStatement.lookup(ctx)) != null ? builtin
 231             : new EmptyTypeStatement(ctx.getRawArgument());
 232     }
 233
 234     @Override
 235     protected EffectiveStatement<String, TypeStatement> createEffective(final Current<String, TypeStatement> stmt,
 236             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 237         // First look up the proper base type
 238         final TypeEffectiveStatement<TypeStatement> typeStmt = resolveType(stmt);
 239         if (substatements.isEmpty()) {
 240             return typeStmt;
 241         }
 242
 243         // Now instantiate the proper effective statement for that type
 244         final TypeDefinition<?> baseType = typeStmt.getTypeDefinition();
 245         final TypeStatement declared = stmt.declared();
 246         if (baseType instanceof BinaryTypeDefinition) {
 247             return createBinary(stmt, (BinaryTypeDefinition) baseType, declared, substatements);
 248         } else if (baseType instanceof BitsTypeDefinition) {
 249             return createBits(stmt, (BitsTypeDefinition) baseType, declared, substatements);
 250         } else if (baseType instanceof BooleanTypeDefinition) {
 251             return createBoolean(stmt, (BooleanTypeDefinition) baseType, declared, substatements);
 252         } else if (baseType instanceof DecimalTypeDefinition) {
 253             return createDecimal(stmt, (DecimalTypeDefinition) baseType, declared, substatements);
 254         } else if (baseType instanceof EmptyTypeDefinition) {
 255             return createEmpty(stmt, (EmptyTypeDefinition) baseType, declared, substatements);
 256         } else if (baseType instanceof EnumTypeDefinition) {
 257             return createEnum(stmt, (EnumTypeDefinition) baseType, declared, substatements);
 258         } else if (baseType instanceof IdentityrefTypeDefinition) {
 259             return createIdentityref(stmt, (IdentityrefTypeDefinition) baseType, declared, substatements);
 260         } else if (baseType instanceof InstanceIdentifierTypeDefinition) {
 261             return createInstanceIdentifier(stmt, (InstanceIdentifierTypeDefinition) baseType, declared, substatements);
 262         } else if (baseType instanceof Int8TypeDefinition) {
 263             return createIntegral(stmt, declared, substatements,
 264                 RestrictedTypes.newInt8Builder((Int8TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 265         } else if (baseType instanceof Int16TypeDefinition) {
 266             return createIntegral(stmt, declared, substatements,
 267                 RestrictedTypes.newInt16Builder((Int16TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 268         } else if (baseType instanceof Int32TypeDefinition) {
 269             return createIntegral(stmt, declared, substatements,
 270                 RestrictedTypes.newInt32Builder((Int32TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 271         } else if (baseType instanceof Int64TypeDefinition) {
 272             return createIntegral(stmt, declared, substatements,
 273                 RestrictedTypes.newInt64Builder((Int64TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 274         } else if (baseType instanceof LeafrefTypeDefinition) {
 275             return createLeafref(stmt, (LeafrefTypeDefinition) baseType, declared, substatements);
 276         } else if (baseType instanceof StringTypeDefinition) {
 277             return createString(stmt, (StringTypeDefinition) baseType, declared, substatements);
 278         } else if (baseType instanceof Uint8TypeDefinition) {
 279             return createIntegral(stmt, declared, substatements,
 280                 RestrictedTypes.newUint8Builder((Uint8TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 281         } else if (baseType instanceof Uint16TypeDefinition) {
 282             return createIntegral(stmt, declared, substatements,
 283                 RestrictedTypes.newUint16Builder((Uint16TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 284         } else if (baseType instanceof Uint32TypeDefinition) {
 285             return createIntegral(stmt, declared, substatements,
 286                 RestrictedTypes.newUint32Builder((Uint32TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 287         } else if (baseType instanceof Uint64TypeDefinition) {
 288             return createIntegral(stmt, declared, substatements,
 289                 RestrictedTypes.newUint64Builder((Uint64TypeDefinition) baseType, typeEffectiveSchemaPath(stmt)));
 290         } else if (baseType instanceof UnionTypeDefinition) {
 291             return createUnion(stmt, (UnionTypeDefinition) baseType, declared, substatements);
 292         } else {
 293             throw new IllegalStateException("Unhandled base type " + baseType);
 294         }
 295     }
 296
 297     static final SchemaPath typeEffectiveSchemaPath(final Current<?, ?> stmt) {
 298         final SchemaPath path = stmt.getSchemaPath();
 299         final SchemaPath parent = path.getParent();
 300         final QName parentQName = parent.getLastComponent();
 301         checkArgument(parentQName != null, "Path %s has an empty parent", path);
 302
 303         final QName qname = path.getLastComponent().bindTo(parentQName.getModule()).intern();
 304         return parent.createChild(qname);
 305     }
 306
 307     /**
 308      * Resolve type reference, as pointed to by the context's argument.
 309      *
 310      * @param ctx Statement context
 311      * @return Resolved type
 312      * @throws SourceException if the target type cannot be found
 313      */
 314     private static @NonNull TypeEffectiveStatement<TypeStatement> resolveType(final Current<String, ?> ctx) {
 315         final StmtContext<?, ?, ?> baseType = ctx.namespaceItem(BaseTypeNamespace.class, Empty.getInstance());
 316         if (baseType != null) {
 317             return ((TypedefEffectiveStatement) baseType.buildEffective()).asTypeEffectiveStatement();
 318         }
 319
 320         final String argument = ctx.getArgument();
 321         switch (argument) {
 322             case BINARY:
 323                 return BuiltinEffectiveStatement.BINARY;
 324             case BOOLEAN:
 325                 return BuiltinEffectiveStatement.BOOLEAN;
 326             case EMPTY:
 327                 return BuiltinEffectiveStatement.EMPTY;
 328             case INSTANCE_IDENTIFIER:
 329                 return BuiltinEffectiveStatement.INSTANCE_IDENTIFIER;
 330             case INT8:
 331                 return BuiltinEffectiveStatement.INT8;
 332             case INT16:
 333                 return BuiltinEffectiveStatement.INT16;
 334             case INT32:
 335                 return BuiltinEffectiveStatement.INT32;
 336             case INT64:
 337                 return BuiltinEffectiveStatement.INT64;
 338             case STRING:
 339                 return BuiltinEffectiveStatement.STRING;
 340             case UINT8:
 341                 return BuiltinEffectiveStatement.UINT8;
 342             case UINT16:
 343                 return BuiltinEffectiveStatement.UINT16;
 344             case UINT32:
 345                 return BuiltinEffectiveStatement.UINT32;
 346             case UINT64:
 347                 return BuiltinEffectiveStatement.UINT64;
 348             default:
 349                 throw new IllegalStateException("Unhandled type argument " + argument);
 350         }
 351     }
 352
 353     private static @NonNull TypeEffectiveStatement<TypeStatement> createBinary(final Current<?, ?> ctx,
 354             final BinaryTypeDefinition baseType, final TypeStatement declared,
 355             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 356         final LengthRestrictedTypeBuilder<BinaryTypeDefinition> builder =
 357                 RestrictedTypes.newBinaryBuilder(baseType, typeEffectiveSchemaPath(ctx));
 358
 359         for (EffectiveStatement<?, ?> stmt : substatements) {
 360             if (stmt instanceof LengthEffectiveStatement) {
 361                 final LengthEffectiveStatement length = (LengthEffectiveStatement)stmt;
 362
 363                 try {
 364                     builder.setLengthConstraint(length, length.argument());
 365                 } catch (IllegalStateException e) {
 366                     throw new SourceException(ctx, e, "Multiple length constraints encountered");
 367                 } catch (InvalidLengthConstraintException e) {
 368                     throw new SourceException(ctx, e, "Invalid length constraint %s", length.argument());
 369                 }
 370             }
 371         }
 372
 373         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 374     }
 375
 376     private @NonNull TypeEffectiveStatement<TypeStatement> createBits(final Current<?, ?> ctx,
 377             final BitsTypeDefinition baseType, final TypeStatement declared,
 378             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 379         final BitsTypeBuilder builder = RestrictedTypes.newBitsBuilder(baseType, ctx.getSchemaPath());
 380
 381         for (final EffectiveStatement<?, ?> stmt : substatements) {
 382             if (stmt instanceof BitEffectiveStatement) {
 383                 builder.addBit(addRestrictedBit(ctx, baseType, (BitEffectiveStatement) stmt));
 384             }
 385         }
 386
 387         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 388     }
 389
 390     abstract @NonNull Bit addRestrictedBit(@NonNull EffectiveStmtCtx stmt, @NonNull BitsTypeDefinition base,
 391         @NonNull BitEffectiveStatement bit);
 392
 393     private static @NonNull TypeEffectiveStatement<TypeStatement> createBoolean(final Current<?, ?> ctx,
 394             final BooleanTypeDefinition baseType, final TypeStatement declared,
 395             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 396         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newBooleanBuilder(baseType,
 397             typeEffectiveSchemaPath(ctx)));
 398     }
 399
 400     private static @NonNull TypeEffectiveStatement<TypeStatement> createDecimal(final Current<?, ?> ctx,
 401             final DecimalTypeDefinition baseType, final TypeStatement declared,
 402             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 403         final RangeRestrictedTypeBuilder<DecimalTypeDefinition, BigDecimal> builder =
 404                 RestrictedTypes.newDecima64Builder(baseType, typeEffectiveSchemaPath(ctx));
 405
 406         for (EffectiveStatement<?, ?> stmt : substatements) {
 407             if (stmt instanceof RangeEffectiveStatement) {
 408                 final RangeEffectiveStatement range = (RangeEffectiveStatement) stmt;
 409                 builder.setRangeConstraint(range, range.argument());
 410             }
 411             if (stmt instanceof FractionDigitsEffectiveStatement) {
 412                 final Integer digits = ((FractionDigitsEffectiveStatement)stmt).argument();
 413                 SourceException.throwIf(baseType.getFractionDigits() != digits, ctx,
 414                     "Cannot override fraction-digits from base type %s to %s", baseType, digits);
 415             }
 416         }
 417
 418         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 419     }
 420
 421     private static @NonNull TypeEffectiveStatement<TypeStatement> createEmpty(final Current<?, ?> ctx,
 422             final EmptyTypeDefinition baseType, final TypeStatement declared,
 423             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 424         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newEmptyBuilder(baseType,
 425             typeEffectiveSchemaPath(ctx)));
 426     }
 427
 428     private @NonNull TypeEffectiveStatement<TypeStatement> createEnum(final Current<?, ?> ctx,
 429             final EnumTypeDefinition baseType, final TypeStatement declared,
 430             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 431         final EnumerationTypeBuilder builder = RestrictedTypes.newEnumerationBuilder(baseType, ctx.getSchemaPath());
 432
 433         for (final EffectiveStatement<?, ?> stmt : substatements) {
 434             if (stmt instanceof EnumEffectiveStatement) {
 435                 builder.addEnum(addRestrictedEnum(ctx, baseType, (EnumEffectiveStatement) stmt));
 436             }
 437         }
 438
 439         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 440     }
 441
 442     abstract @NonNull EnumPair addRestrictedEnum(@NonNull EffectiveStmtCtx stmt, @NonNull EnumTypeDefinition base,
 443         @NonNull EnumEffectiveStatement enumStmt);
 444
 445     private static @NonNull TypeEffectiveStatement<TypeStatement> createIdentityref(final Current<?, ?> ctx,
 446             final IdentityrefTypeDefinition baseType, final TypeStatement declared,
 447             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 448         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newIdentityrefBuilder(baseType,
 449             typeEffectiveSchemaPath(ctx)));
 450     }
 451
 452     private static @NonNull TypeEffectiveStatement<TypeStatement> createInstanceIdentifier(
 453             final Current<?, ?> ctx, final InstanceIdentifierTypeDefinition baseType, final TypeStatement declared,
 454             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 455         final InstanceIdentifierTypeBuilder builder = RestrictedTypes.newInstanceIdentifierBuilder(baseType,
 456                     typeEffectiveSchemaPath(ctx));
 457
 458         for (EffectiveStatement<?, ?> stmt : substatements) {
 459             if (stmt instanceof RequireInstanceEffectiveStatement) {
 460                 builder.setRequireInstance(((RequireInstanceEffectiveStatement)stmt).argument());
 461             }
 462         }
 463
 464         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 465     }
 466
 467     private static <T extends RangeRestrictedTypeDefinition<T, N>, N extends Number & Comparable<N>>
 468         @NonNull TypeEffectiveStatement<TypeStatement> createIntegral(final Current<?, ?> ctx,
 469                 final TypeStatement declared, final ImmutableList<? extends EffectiveStatement<?, ?>> substatements,
 470                 final RangeRestrictedTypeBuilder<T, N> builder) {
 471         for (EffectiveStatement<?, ?> stmt : substatements) {
 472             if (stmt instanceof RangeEffectiveStatement) {
 473                 final RangeEffectiveStatement rangeStmt = (RangeEffectiveStatement)stmt;
 474                 builder.setRangeConstraint(rangeStmt, rangeStmt.argument());
 475             }
 476         }
 477
 478         try {
 479             return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 480         } catch (InvalidRangeConstraintException e) {
 481             throw new SourceException(ctx, e, "Invalid range constraint: %s", e.getOffendingRanges());
 482         }
 483     }
 484
 485     private static @NonNull TypeEffectiveStatement<TypeStatement> createLeafref(final Current<?, ?> ctx,
 486             final LeafrefTypeDefinition baseType, final TypeStatement declared,
 487             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 488         final RequireInstanceRestrictedTypeBuilder<LeafrefTypeDefinition> builder =
 489                 RestrictedTypes.newLeafrefBuilder(baseType, AbstractTypeStatementSupport.typeEffectiveSchemaPath(ctx));
 490
 491         for (final EffectiveStatement<?, ?> stmt : substatements) {
 492             if (stmt instanceof RequireInstanceEffectiveStatement) {
 493                 builder.setRequireInstance(((RequireInstanceEffectiveStatement) stmt).argument());
 494             }
 495         }
 496         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 497     }
 498
 499     private static @NonNull TypeEffectiveStatement<TypeStatement> createString(final Current<?, ?> ctx,
 500             final StringTypeDefinition baseType, final TypeStatement declared,
 501             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 502         final StringTypeBuilder builder = RestrictedTypes.newStringBuilder(baseType,
 503             AbstractTypeStatementSupport.typeEffectiveSchemaPath(ctx));
 504
 505         for (EffectiveStatement<?, ?> stmt : substatements) {
 506             if (stmt instanceof LengthEffectiveStatement) {
 507                 final LengthEffectiveStatement length = (LengthEffectiveStatement)stmt;
 508
 509                 try {
 510                     builder.setLengthConstraint(length, length.argument());
 511                 } catch (IllegalStateException e) {
 512                     throw new SourceException(ctx, e, "Multiple length constraints encountered");
 513                 } catch (InvalidLengthConstraintException e) {
 514                     throw new SourceException(ctx, e, "Invalid length constraint %s", length.argument());
 515                 }
 516             }
 517             if (stmt instanceof PatternEffectiveStatement) {
 518                 builder.addPatternConstraint((PatternEffectiveStatement) stmt);
 519             }
 520         }
 521
 522         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 523     }
 524
 525     private static @NonNull TypeEffectiveStatement<TypeStatement> createUnion(final Current<?, ?> ctx,
 526             final UnionTypeDefinition baseType, final TypeStatement declared,
 527             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 528         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newUnionBuilder(baseType,
 529             typeEffectiveSchemaPath(ctx)));
 530     }
 531 }