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

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. 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 java.util.Optional;
  11 import org.eclipse.jdt.annotation.NonNull;
  12 import org.opendaylight.yangtools.yang.common.Uint32;
  13 import org.opendaylight.yangtools.yang.model.api.UnknownSchemaNode;
  14 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  15 import org.opendaylight.yangtools.yang.model.api.stmt.BitEffectiveStatement;
  16 import org.opendaylight.yangtools.yang.model.api.stmt.TypeEffectiveStatement;
  17 import org.opendaylight.yangtools.yang.model.api.stmt.TypeStatement.BitsSpecification;
  18 import org.opendaylight.yangtools.yang.model.api.type.BitsTypeDefinition;
  19 import org.opendaylight.yangtools.yang.model.api.type.BitsTypeDefinition.Bit;
  20 import org.opendaylight.yangtools.yang.model.util.type.BaseTypes;
  21 import org.opendaylight.yangtools.yang.model.util.type.BitsTypeBuilder;
  22 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.DeclaredEffectiveStatementBase;
  23 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  24 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  25
  26 final class BitsSpecificationEffectiveStatement extends DeclaredEffectiveStatementBase<String, BitsSpecification>
  27         implements TypeEffectiveStatement<BitsSpecification> {
  28
  29     private final @NonNull BitsTypeDefinition typeDefinition;
  30
  31     BitsSpecificationEffectiveStatement(
  32             final StmtContext<String, BitsSpecification, EffectiveStatement<String, BitsSpecification>> ctx) {
  33         super(ctx);
  34
  35         final BitsTypeBuilder builder = BaseTypes.bitsTypeBuilder(ctx.getSchemaPath().get());
  36         Uint32 highestPosition = null;
  37         for (final EffectiveStatement<?, ?> stmt : effectiveSubstatements()) {
  38             if (stmt instanceof BitEffectiveStatement) {
  39                 final BitEffectiveStatement bitSubStmt = (BitEffectiveStatement) stmt;
  40
  41                 final Optional<Uint32> declaredPosition = bitSubStmt.getDeclaredPosition();
  42                 final Uint32 effectivePos;
  43                 if (declaredPosition.isEmpty()) {
  44                     if (highestPosition != null) {
  45                         SourceException.throwIf(Uint32.MAX_VALUE.equals(highestPosition),
  46                             ctx.getStatementSourceReference(), "Bit %s must have a position statement", bitSubStmt);
  47                         effectivePos = Uint32.fromIntBits(highestPosition.intValue() + 1);
  48                     } else {
  49                         effectivePos = Uint32.ZERO;
  50                     }
  51                 } else {
  52                     effectivePos = declaredPosition.get();
  53                 }
  54
  55                 final Bit bit = EffectiveTypeUtil.buildBit(bitSubStmt, effectivePos);
  56                 if (highestPosition == null || highestPosition.compareTo(bit.getPosition()) < 0) {
  57                     highestPosition = bit.getPosition();
  58                 }
  59
  60                 builder.addBit(bit);
  61             }
  62             if (stmt instanceof UnknownSchemaNode) {
  63                 builder.addUnknownSchemaNode((UnknownSchemaNode) stmt);
  64             }
  65         }
  66
  67         typeDefinition = builder.build();
  68     }
  69
  70     @Override
  71     public BitsTypeDefinition getTypeDefinition() {
  72         return typeDefinition;
  73     }
  74 }