yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/type/Decimal64SpecificationSupport.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 com.google.common.collect.ImmutableList;
  11 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  12 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
  13 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  14 import org.opendaylight.yangtools.yang.model.api.stmt.FractionDigitsEffectiveStatement;
  15 import org.opendaylight.yangtools.yang.model.api.stmt.RangeEffectiveStatement;
  16 import org.opendaylight.yangtools.yang.model.api.stmt.TypeStatement.Decimal64Specification;
  17 import org.opendaylight.yangtools.yang.model.util.type.BaseTypes;
  18 import org.opendaylight.yangtools.yang.model.util.type.DecimalTypeBuilder;
  19 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseStatementSupport;
  20 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  21 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  22 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  23
  24 final class Decimal64SpecificationSupport extends BaseStatementSupport<String, Decimal64Specification,
  25         EffectiveStatement<String, Decimal64Specification>> {
  26     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(
  27         YangStmtMapping.TYPE)
  28         .addMandatory(YangStmtMapping.FRACTION_DIGITS)
  29         .addOptional(YangStmtMapping.RANGE)
  30         .build();
  31
  32     Decimal64SpecificationSupport() {
  33         super(YangStmtMapping.TYPE);
  34     }
  35
  36     @Override
  37     public String parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
  38         return value;
  39     }
  40
  41     @Override
  42     protected SubstatementValidator getSubstatementValidator() {
  43         return SUBSTATEMENT_VALIDATOR;
  44     }
  45
  46     @Override
  47     protected Decimal64Specification createDeclared(final StmtContext<String, Decimal64Specification, ?> ctx,
  48             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
  49         return new Decimal64SpecificationImpl(ctx, substatements);
  50     }
  51
  52     @Override
  53     protected Decimal64Specification createEmptyDeclared(final StmtContext<String, Decimal64Specification, ?> ctx) {
  54         throw noFracDigits(ctx);
  55     }
  56
  57     @Override
  58     protected EffectiveStatement<String, Decimal64Specification> createEffective(
  59             final StmtContext<String, Decimal64Specification, EffectiveStatement<String, Decimal64Specification>> ctx,
  60             final Decimal64Specification declared,
  61             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  62         final DecimalTypeBuilder builder = BaseTypes.decimalTypeBuilder(ctx.getSchemaPath().get());
  63         for (final EffectiveStatement<?, ?> stmt : substatements) {
  64             if (stmt instanceof FractionDigitsEffectiveStatement) {
  65                 builder.setFractionDigits(((FractionDigitsEffectiveStatement) stmt).argument());
  66             }
  67             if (stmt instanceof RangeEffectiveStatement) {
  68                 final RangeEffectiveStatement range = (RangeEffectiveStatement) stmt;
  69                 builder.setRangeConstraint(range, range.argument());
  70             }
  71         }
  72
  73         return new TypeEffectiveStatementImpl<>(declared, substatements, builder);
  74     }
  75
  76     @Override
  77     protected EffectiveStatement<String, Decimal64Specification> createEmptyEffective(
  78             final StmtContext<String, Decimal64Specification, EffectiveStatement<String, Decimal64Specification>> ctx,
  79             final Decimal64Specification declared) {
  80         throw noFracDigits(ctx);
  81     }
  82
  83     private static SourceException noFracDigits(final StmtContext<?, ?, ?> ctx) {
  84         /*
  85          *  https://tools.ietf.org/html/rfc7950#section-9.3.4
  86          *
  87          *     The "fraction-digits" statement, which is a substatement to the
  88          *     "type" statement, MUST be present if the type is "decimal64".
  89          */
  90         return new SourceException("At least one fraction-digits statement has to be present",
  91             ctx.getStatementSourceReference());
  92     }
  93 }