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.Verify.verifyNotNull;
  11
  12 import com.google.common.collect.ImmutableList;
  13 import com.google.common.collect.ImmutableMap;
  14 import com.google.common.collect.ImmutableSet;
  15 import com.google.common.collect.Iterables;
  16 import com.google.common.collect.Maps;
  17 import java.math.BigDecimal;
  18 import java.util.Collection;
  19 import org.eclipse.jdt.annotation.NonNull;
  20 import org.opendaylight.yangtools.yang.common.Empty;
  21 import org.opendaylight.yangtools.yang.common.QName;
  22 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
  23 import org.opendaylight.yangtools.yang.model.api.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.type.BinaryTypeDefinition;
  37 import org.opendaylight.yangtools.yang.model.api.type.BitsTypeDefinition;
  38 import org.opendaylight.yangtools.yang.model.api.type.BitsTypeDefinition.Bit;
  39 import org.opendaylight.yangtools.yang.model.api.type.BooleanTypeDefinition;
  40 import org.opendaylight.yangtools.yang.model.api.type.DecimalTypeDefinition;
  41 import org.opendaylight.yangtools.yang.model.api.type.EmptyTypeDefinition;
  42 import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition;
  43 import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition.EnumPair;
  44 import org.opendaylight.yangtools.yang.model.api.type.IdentityrefTypeDefinition;
  45 import org.opendaylight.yangtools.yang.model.api.type.InstanceIdentifierTypeDefinition;
  46 import org.opendaylight.yangtools.yang.model.api.type.Int16TypeDefinition;
  47 import org.opendaylight.yangtools.yang.model.api.type.Int32TypeDefinition;
  48 import org.opendaylight.yangtools.yang.model.api.type.Int64TypeDefinition;
  49 import org.opendaylight.yangtools.yang.model.api.type.Int8TypeDefinition;
  50 import org.opendaylight.yangtools.yang.model.api.type.LeafrefTypeDefinition;
  51 import org.opendaylight.yangtools.yang.model.api.type.RangeRestrictedTypeDefinition;
  52 import org.opendaylight.yangtools.yang.model.api.type.StringTypeDefinition;
  53 import org.opendaylight.yangtools.yang.model.api.type.Uint16TypeDefinition;
  54 import org.opendaylight.yangtools.yang.model.api.type.Uint32TypeDefinition;
  55 import org.opendaylight.yangtools.yang.model.api.type.Uint64TypeDefinition;
  56 import org.opendaylight.yangtools.yang.model.api.type.Uint8TypeDefinition;
  57 import org.opendaylight.yangtools.yang.model.api.type.UnionTypeDefinition;
  58 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatements;
  59 import org.opendaylight.yangtools.yang.model.ri.type.BitsTypeBuilder;
  60 import org.opendaylight.yangtools.yang.model.ri.type.EnumerationTypeBuilder;
  61 import org.opendaylight.yangtools.yang.model.ri.type.InstanceIdentifierTypeBuilder;
  62 import org.opendaylight.yangtools.yang.model.ri.type.InvalidLengthConstraintException;
  63 import org.opendaylight.yangtools.yang.model.ri.type.InvalidRangeConstraintException;
  64 import org.opendaylight.yangtools.yang.model.ri.type.LengthRestrictedTypeBuilder;
  65 import org.opendaylight.yangtools.yang.model.ri.type.RangeRestrictedTypeBuilder;
  66 import org.opendaylight.yangtools.yang.model.ri.type.RequireInstanceRestrictedTypeBuilder;
  67 import org.opendaylight.yangtools.yang.model.ri.type.RestrictedTypes;
  68 import org.opendaylight.yangtools.yang.model.ri.type.StringTypeBuilder;
  69 import org.opendaylight.yangtools.yang.parser.spi.TypeNamespace;
  70 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStringStatementSupport;
  71 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx;
  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
  86 abstract class AbstractTypeStatementSupport
  87         extends AbstractStringStatementSupport<TypeStatement, EffectiveStatement<String, TypeStatement>> {
  88     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(
  89         YangStmtMapping.TYPE)
  90         .addOptional(YangStmtMapping.BASE)
  91         .addAny(YangStmtMapping.BIT)
  92         .addAny(YangStmtMapping.ENUM)
  93         .addOptional(YangStmtMapping.FRACTION_DIGITS)
  94         .addOptional(YangStmtMapping.LENGTH)
  95         .addOptional(YangStmtMapping.PATH)
  96         .addAny(YangStmtMapping.PATTERN)
  97         .addOptional(YangStmtMapping.RANGE)
  98         .addOptional(YangStmtMapping.REQUIRE_INSTANCE)
  99         .addAny(YangStmtMapping.TYPE)
 100         .build();
 101
 102     static final String BINARY = "binary";
 103     static final String BITS = "bits";
 104     static final String BOOLEAN = "boolean";
 105     static final String DECIMAL64 = "decimal64";
 106     static final String EMPTY = "empty";
 107     static final String ENUMERATION = "enumeration";
 108     static final String IDENTITY_REF = "identityref";
 109     static final String INSTANCE_IDENTIFIER = "instance-identifier";
 110     static final String INT8 = "int8";
 111     static final String INT16 = "int16";
 112     static final String INT32 = "int32";
 113     static final String INT64 = "int64";
 114     static final String LEAF_REF = "leafref";
 115     static final String STRING = "string";
 116     static final String UINT8 = "uint8";
 117     static final String UINT16 = "uint16";
 118     static final String UINT32 = "uint32";
 119     static final String UINT64 = "uint64";
 120     static final String UNION = "union";
 121
 122     private static final ImmutableMap<String, BuiltinEffectiveStatement> STATIC_BUILT_IN_TYPES =
 123         ImmutableMap.<String, BuiltinEffectiveStatement>builder()
 124             .put(BINARY, BuiltinEffectiveStatement.BINARY)
 125             .put(BOOLEAN, BuiltinEffectiveStatement.BOOLEAN)
 126             .put(EMPTY, BuiltinEffectiveStatement.EMPTY)
 127             // FIXME: this overlaps with DYNAMIC_BUILT_IN_TYPES. One of these is not needed, but we need to decide
 128             //        what to do. I think we should gradually use per-statement validators, hence go towards dynamic?
 129             .put(INSTANCE_IDENTIFIER, BuiltinEffectiveStatement.INSTANCE_IDENTIFIER)
 130             .put(INT8, BuiltinEffectiveStatement.INT8)
 131             .put(INT16, BuiltinEffectiveStatement.INT16)
 132             .put(INT32, BuiltinEffectiveStatement.INT32)
 133             .put(INT64, BuiltinEffectiveStatement.INT64)
 134             .put(STRING, BuiltinEffectiveStatement.STRING)
 135             .put(UINT8, BuiltinEffectiveStatement.UINT8)
 136             .put(UINT16, BuiltinEffectiveStatement.UINT16)
 137             .put(UINT32, BuiltinEffectiveStatement.UINT32)
 138             .put(UINT64, BuiltinEffectiveStatement.UINT64)
 139             .build();
 140
 141     private static final ImmutableMap<String, StatementSupport<?, ?, ?>> DYNAMIC_BUILT_IN_TYPES =
 142             ImmutableMap.<String, StatementSupport<?, ?, ?>>builder()
 143             .put(BITS, new BitsSpecificationSupport())
 144             .put(DECIMAL64, new Decimal64SpecificationSupport())
 145             .put(ENUMERATION, new EnumSpecificationSupport())
 146             .put(IDENTITY_REF, new IdentityRefSpecificationRFC6020Support())
 147             .put(INSTANCE_IDENTIFIER, new InstanceIdentifierSpecificationSupport())
 148             .put(LEAF_REF, new LeafrefSpecificationRFC6020Support())
 149             .put(UNION, new UnionSpecificationSupport())
 150             .build();
 151
 152     private static final ImmutableMap<String, String> BUILT_IN_TYPES = Maps.uniqueIndex(ImmutableSet.copyOf(
 153         Iterables.<String>concat(STATIC_BUILT_IN_TYPES.keySet(), DYNAMIC_BUILT_IN_TYPES.keySet())), key -> key);
 154
 155     AbstractTypeStatementSupport() {
 156         super(YangStmtMapping.TYPE, StatementPolicy.exactReplica());
 157     }
 158
 159     @Override
 160     public final void onFullDefinitionDeclared(
 161             final Mutable<String, TypeStatement, EffectiveStatement<String, TypeStatement>> stmt) {
 162         super.onFullDefinitionDeclared(stmt);
 163
 164         final String argument = stmt.getArgument();
 165         final BuiltinEffectiveStatement builtin = STATIC_BUILT_IN_TYPES.get(argument);
 166         if (builtin != null) {
 167             stmt.addToNs(BaseTypeNamespace.class, Empty.getInstance(), builtin);
 168             return;
 169         }
 170
 171         final QName typeQName = StmtContextUtils.parseNodeIdentifier(stmt, argument);
 172         final ModelActionBuilder typeAction = stmt.newInferenceAction(ModelProcessingPhase.EFFECTIVE_MODEL);
 173         final Prerequisite<StmtContext<?, ?, ?>> typePrereq = typeAction.requiresCtx(stmt, TypeNamespace.class,
 174                 typeQName, ModelProcessingPhase.EFFECTIVE_MODEL);
 175         typeAction.mutatesEffectiveCtx(stmt.getParentContext());
 176
 177         /*
 178          * If the type does not exist, throw an InferenceException.
 179          * If the type exists, store a reference to it in BaseTypeNamespace.
 180          */
 181         typeAction.apply(new InferenceAction() {
 182             @Override
 183             public void apply(final InferenceContext ctx) {
 184                 // Note: do not attempt to call buildEffective() here
 185                 stmt.addToNs(BaseTypeNamespace.class, Empty.getInstance(), typePrereq.resolve(ctx));
 186             }
 187
 188             @Override
 189             public void prerequisiteFailed(final Collection<? extends Prerequisite<?>> failed) {
 190                 InferenceException.throwIf(failed.contains(typePrereq), stmt, "Type [%s] was not found.", typeQName);
 191             }
 192         });
 193     }
 194
 195     @Override
 196     public final String internArgument(final String rawArgument) {
 197         final String found;
 198         return (found = BUILT_IN_TYPES.get(rawArgument)) != null ? found : rawArgument;
 199     }
 200
 201     @Override
 202     public boolean hasArgumentSpecificSupports() {
 203         return !DYNAMIC_BUILT_IN_TYPES.isEmpty();
 204     }
 205
 206     @Override
 207     public StatementSupport<?, ?, ?> getSupportSpecificForArgument(final String argument) {
 208         return DYNAMIC_BUILT_IN_TYPES.get(argument);
 209     }
 210
 211     @Override
 212     protected final SubstatementValidator getSubstatementValidator() {
 213         return SUBSTATEMENT_VALIDATOR;
 214     }
 215
 216     @Override
 217     protected final TypeStatement createDeclared(final StmtContext<String, TypeStatement, ?> ctx,
 218             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
 219         return DeclaredStatements.createType(ctx.getRawArgument(), substatements);
 220     }
 221
 222     @Override
 223     protected final TypeStatement createEmptyDeclared(final StmtContext<String, TypeStatement, ?> ctx) {
 224         final TypeStatement builtin;
 225         return (builtin = BuiltinTypeStatement.lookup(ctx)) != null ? builtin
 226             : DeclaredStatements.createType(ctx.getRawArgument());
 227     }
 228
 229     @Override
 230     protected EffectiveStatement<String, TypeStatement> createEffective(final Current<String, TypeStatement> stmt,
 231             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 232         // First look up the proper base type
 233         final TypeEffectiveStatement<TypeStatement> typeStmt = resolveType(stmt);
 234         if (substatements.isEmpty()) {
 235             return typeStmt;
 236         }
 237
 238         // Now instantiate the proper effective statement for that type
 239         final TypeDefinition<?> baseType = typeStmt.getTypeDefinition();
 240         final TypeStatement declared = stmt.declared();
 241         if (baseType instanceof BinaryTypeDefinition) {
 242             return createBinary(stmt, (BinaryTypeDefinition) baseType, declared, substatements);
 243         } else if (baseType instanceof BitsTypeDefinition) {
 244             return createBits(stmt, (BitsTypeDefinition) baseType, declared, substatements);
 245         } else if (baseType instanceof BooleanTypeDefinition) {
 246             return createBoolean(stmt, (BooleanTypeDefinition) baseType, declared, substatements);
 247         } else if (baseType instanceof DecimalTypeDefinition) {
 248             return createDecimal(stmt, (DecimalTypeDefinition) baseType, declared, substatements);
 249         } else if (baseType instanceof EmptyTypeDefinition) {
 250             return createEmpty(stmt, (EmptyTypeDefinition) baseType, declared, substatements);
 251         } else if (baseType instanceof EnumTypeDefinition) {
 252             return createEnum(stmt, (EnumTypeDefinition) baseType, declared, substatements);
 253         } else if (baseType instanceof IdentityrefTypeDefinition) {
 254             return createIdentityref(stmt, (IdentityrefTypeDefinition) baseType, declared, substatements);
 255         } else if (baseType instanceof InstanceIdentifierTypeDefinition) {
 256             return createInstanceIdentifier(stmt, (InstanceIdentifierTypeDefinition) baseType, declared, substatements);
 257         } else if (baseType instanceof Int8TypeDefinition) {
 258             return createIntegral(stmt, declared, substatements,
 259                 RestrictedTypes.newInt8Builder((Int8TypeDefinition) baseType, typeEffectiveQName(stmt)));
 260         } else if (baseType instanceof Int16TypeDefinition) {
 261             return createIntegral(stmt, declared, substatements,
 262                 RestrictedTypes.newInt16Builder((Int16TypeDefinition) baseType, typeEffectiveQName(stmt)));
 263         } else if (baseType instanceof Int32TypeDefinition) {
 264             return createIntegral(stmt, declared, substatements,
 265                 RestrictedTypes.newInt32Builder((Int32TypeDefinition) baseType, typeEffectiveQName(stmt)));
 266         } else if (baseType instanceof Int64TypeDefinition) {
 267             return createIntegral(stmt, declared, substatements,
 268                 RestrictedTypes.newInt64Builder((Int64TypeDefinition) baseType, typeEffectiveQName(stmt)));
 269         } else if (baseType instanceof LeafrefTypeDefinition) {
 270             return createLeafref(stmt, (LeafrefTypeDefinition) baseType, declared, substatements);
 271         } else if (baseType instanceof StringTypeDefinition) {
 272             return createString(stmt, (StringTypeDefinition) baseType, declared, substatements);
 273         } else if (baseType instanceof Uint8TypeDefinition) {
 274             return createIntegral(stmt, declared, substatements,
 275                 RestrictedTypes.newUint8Builder((Uint8TypeDefinition) baseType, typeEffectiveQName(stmt)));
 276         } else if (baseType instanceof Uint16TypeDefinition) {
 277             return createIntegral(stmt, declared, substatements,
 278                 RestrictedTypes.newUint16Builder((Uint16TypeDefinition) baseType, typeEffectiveQName(stmt)));
 279         } else if (baseType instanceof Uint32TypeDefinition) {
 280             return createIntegral(stmt, declared, substatements,
 281                 RestrictedTypes.newUint32Builder((Uint32TypeDefinition) baseType, typeEffectiveQName(stmt)));
 282         } else if (baseType instanceof Uint64TypeDefinition) {
 283             return createIntegral(stmt, declared, substatements,
 284                 RestrictedTypes.newUint64Builder((Uint64TypeDefinition) baseType, typeEffectiveQName(stmt)));
 285         } else if (baseType instanceof UnionTypeDefinition) {
 286             return createUnion(stmt, (UnionTypeDefinition) baseType, declared, substatements);
 287         } else {
 288             throw new IllegalStateException("Unhandled base type " + baseType);
 289         }
 290     }
 291
 292     // FIXME: YANGTOOLS-1208: this needs to happen during onFullDefinitionDeclared() and stored (again) in a namespace
 293     static final @NonNull QName typeEffectiveQName(final Current<String, ?> stmt) {
 294         // FIXME: YANGTOOLS-1117: this really should be handled through A=AbstractQName, with two values coming out of
 295         //        parseArgument(): either UnqualifiedQName or QualifiedQName. Each of those can easily be bound to
 296         //        parent module:
 297         //          stmt.getArgument().bindTo(parentNamespace).
 298         final String argument = stmt.getArgument();
 299         return QName.create(stmt.getEffectiveParent().effectiveNamespace(),
 300             // Split out localName event if it is prefixed. This should really be in parseArgument()
 301             argument.substring(argument.indexOf(':') + 1)).intern();
 302     }
 303
 304     /**
 305      * Resolve type reference, as pointed to by the context's argument.
 306      *
 307      * @param ctx Statement context
 308      * @return Resolved type
 309      * @throws SourceException if the target type cannot be found
 310      */
 311     private static @NonNull TypeEffectiveStatement<TypeStatement> resolveType(final Current<String, ?> ctx) {
 312         final Object obj = verifyNotNull(ctx.namespaceItem(BaseTypeNamespace.class, Empty.getInstance()));
 313         if (obj instanceof BuiltinEffectiveStatement) {
 314             return (BuiltinEffectiveStatement) obj;
 315         } else if (obj instanceof StmtContext) {
 316             return ((TypedefEffectiveStatement) ((StmtContext<?, ?, ?>) obj).buildEffective())
 317                 .asTypeEffectiveStatement();
 318         } else {
 319             throw new InferenceException(ctx, "Unexpected base object %s", obj);
 320         }
 321     }
 322
 323     private static @NonNull TypeEffectiveStatement<TypeStatement> createBinary(final Current<String, ?> ctx,
 324             final BinaryTypeDefinition baseType, final TypeStatement declared,
 325             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 326         final LengthRestrictedTypeBuilder<BinaryTypeDefinition> builder =
 327                 RestrictedTypes.newBinaryBuilder(baseType, typeEffectiveQName(ctx));
 328
 329         for (EffectiveStatement<?, ?> stmt : substatements) {
 330             if (stmt instanceof LengthEffectiveStatement) {
 331                 final LengthEffectiveStatement length = (LengthEffectiveStatement)stmt;
 332
 333                 try {
 334                     builder.setLengthConstraint(length, length.argument());
 335                 } catch (IllegalStateException e) {
 336                     throw new SourceException(ctx, e, "Multiple length constraints encountered");
 337                 } catch (InvalidLengthConstraintException e) {
 338                     throw new SourceException(ctx, e, "Invalid length constraint %s", length.argument());
 339                 }
 340             }
 341         }
 342
 343         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 344     }
 345
 346     private @NonNull TypeEffectiveStatement<TypeStatement> createBits(final Current<?, ?> ctx,
 347             final BitsTypeDefinition baseType, final TypeStatement declared,
 348             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 349         final BitsTypeBuilder builder = RestrictedTypes.newBitsBuilder(baseType, ctx.argumentAsTypeQName());
 350
 351         for (final EffectiveStatement<?, ?> stmt : substatements) {
 352             if (stmt instanceof BitEffectiveStatement) {
 353                 builder.addBit(addRestrictedBit(ctx, baseType, (BitEffectiveStatement) stmt));
 354             }
 355         }
 356
 357         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 358     }
 359
 360     abstract @NonNull Bit addRestrictedBit(@NonNull EffectiveStmtCtx stmt, @NonNull BitsTypeDefinition base,
 361         @NonNull BitEffectiveStatement bit);
 362
 363     private static @NonNull TypeEffectiveStatement<TypeStatement> createBoolean(final Current<String, ?> ctx,
 364             final BooleanTypeDefinition baseType, final TypeStatement declared,
 365             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 366         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newBooleanBuilder(baseType,
 367             typeEffectiveQName(ctx)));
 368     }
 369
 370     private static @NonNull TypeEffectiveStatement<TypeStatement> createDecimal(final Current<String, ?> ctx,
 371             final DecimalTypeDefinition baseType, final TypeStatement declared,
 372             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 373         final RangeRestrictedTypeBuilder<DecimalTypeDefinition, BigDecimal> builder =
 374                 RestrictedTypes.newDecima64Builder(baseType, typeEffectiveQName(ctx));
 375
 376         for (EffectiveStatement<?, ?> stmt : substatements) {
 377             if (stmt instanceof RangeEffectiveStatement) {
 378                 final RangeEffectiveStatement range = (RangeEffectiveStatement) stmt;
 379                 builder.setRangeConstraint(range, range.argument());
 380             }
 381             if (stmt instanceof FractionDigitsEffectiveStatement) {
 382                 final Integer digits = ((FractionDigitsEffectiveStatement)stmt).argument();
 383                 SourceException.throwIf(baseType.getFractionDigits() != digits, ctx,
 384                     "Cannot override fraction-digits from base type %s to %s", baseType, digits);
 385             }
 386         }
 387
 388         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 389     }
 390
 391     private static @NonNull TypeEffectiveStatement<TypeStatement> createEmpty(final Current<String, ?> ctx,
 392             final EmptyTypeDefinition baseType, final TypeStatement declared,
 393             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 394         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newEmptyBuilder(baseType,
 395             typeEffectiveQName(ctx)));
 396     }
 397
 398     private @NonNull TypeEffectiveStatement<TypeStatement> createEnum(final Current<?, ?> ctx,
 399             final EnumTypeDefinition baseType, final TypeStatement declared,
 400             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 401         final EnumerationTypeBuilder builder = RestrictedTypes.newEnumerationBuilder(baseType,
 402             ctx.argumentAsTypeQName());
 403
 404         for (final EffectiveStatement<?, ?> stmt : substatements) {
 405             if (stmt instanceof EnumEffectiveStatement) {
 406                 builder.addEnum(addRestrictedEnum(ctx, baseType, (EnumEffectiveStatement) stmt));
 407             }
 408         }
 409
 410         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 411     }
 412
 413     abstract @NonNull EnumPair addRestrictedEnum(@NonNull EffectiveStmtCtx stmt, @NonNull EnumTypeDefinition base,
 414         @NonNull EnumEffectiveStatement enumStmt);
 415
 416     private static @NonNull TypeEffectiveStatement<TypeStatement> createIdentityref(final Current<String, ?> ctx,
 417             final IdentityrefTypeDefinition baseType, final TypeStatement declared,
 418             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 419         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newIdentityrefBuilder(baseType,
 420             typeEffectiveQName(ctx)));
 421     }
 422
 423     private static @NonNull TypeEffectiveStatement<TypeStatement> createInstanceIdentifier(final Current<String, ?> ctx,
 424             final InstanceIdentifierTypeDefinition baseType, final TypeStatement declared,
 425             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 426         final InstanceIdentifierTypeBuilder builder = RestrictedTypes.newInstanceIdentifierBuilder(baseType,
 427                     typeEffectiveQName(ctx));
 428
 429         for (EffectiveStatement<?, ?> stmt : substatements) {
 430             if (stmt instanceof RequireInstanceEffectiveStatement) {
 431                 builder.setRequireInstance(((RequireInstanceEffectiveStatement)stmt).argument());
 432             }
 433         }
 434
 435         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 436     }
 437
 438     private static <T extends RangeRestrictedTypeDefinition<T, N>, N extends Number & Comparable<N>>
 439         @NonNull TypeEffectiveStatement<TypeStatement> createIntegral(final Current<?, ?> ctx,
 440                 final TypeStatement declared, final ImmutableList<? extends EffectiveStatement<?, ?>> substatements,
 441                 final RangeRestrictedTypeBuilder<T, N> builder) {
 442         for (EffectiveStatement<?, ?> stmt : substatements) {
 443             if (stmt instanceof RangeEffectiveStatement) {
 444                 final RangeEffectiveStatement rangeStmt = (RangeEffectiveStatement)stmt;
 445                 builder.setRangeConstraint(rangeStmt, rangeStmt.argument());
 446             }
 447         }
 448
 449         try {
 450             return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 451         } catch (InvalidRangeConstraintException e) {
 452             throw new SourceException(ctx, e, "Invalid range constraint: %s", e.getOffendingRanges());
 453         }
 454     }
 455
 456     private static @NonNull TypeEffectiveStatement<TypeStatement> createLeafref(final Current<String, ?> ctx,
 457             final LeafrefTypeDefinition baseType, final TypeStatement declared,
 458             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 459         final RequireInstanceRestrictedTypeBuilder<LeafrefTypeDefinition> builder =
 460                 RestrictedTypes.newLeafrefBuilder(baseType, AbstractTypeStatementSupport.typeEffectiveQName(ctx));
 461
 462         for (final EffectiveStatement<?, ?> stmt : substatements) {
 463             if (stmt instanceof RequireInstanceEffectiveStatement) {
 464                 builder.setRequireInstance(((RequireInstanceEffectiveStatement) stmt).argument());
 465             }
 466         }
 467         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 468     }
 469
 470     private static @NonNull TypeEffectiveStatement<TypeStatement> createString(final Current<String, ?> ctx,
 471             final StringTypeDefinition baseType, final TypeStatement declared,
 472             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 473         final StringTypeBuilder builder = RestrictedTypes.newStringBuilder(baseType,
 474             AbstractTypeStatementSupport.typeEffectiveQName(ctx));
 475
 476         for (EffectiveStatement<?, ?> stmt : substatements) {
 477             if (stmt instanceof LengthEffectiveStatement) {
 478                 final LengthEffectiveStatement length = (LengthEffectiveStatement)stmt;
 479
 480                 try {
 481                     builder.setLengthConstraint(length, length.argument());
 482                 } catch (IllegalStateException e) {
 483                     throw new SourceException(ctx, e, "Multiple length constraints encountered");
 484                 } catch (InvalidLengthConstraintException e) {
 485                     throw new SourceException(ctx, e, "Invalid length constraint %s", length.argument());
 486                 }
 487             }
 488             if (stmt instanceof PatternEffectiveStatement) {
 489                 builder.addPatternConstraint((PatternEffectiveStatement) stmt);
 490             }
 491         }
 492
 493         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
 494     }
 495
 496     private static @NonNull TypeEffectiveStatement<TypeStatement> createUnion(final Current<String, ?> ctx,
 497             final UnionTypeDefinition baseType, final TypeStatement declared,
 498             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 499         return new TypeEffectiveStatementImpl<>(declared, substatements, RestrictedTypes.newUnionBuilder(baseType,
 500             typeEffectiveQName(ctx)));
 501     }
 502 }