yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/leaf_list/AbstractLeafListStatementSupport.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.leaf_list;
   9
  10 import com.google.common.collect.ImmutableList;
  11 import com.google.common.collect.ImmutableSet;
  12 import java.util.Optional;
  13 import org.opendaylight.yangtools.yang.common.Ordering;
  14 import org.opendaylight.yangtools.yang.common.QName;
  15 import org.opendaylight.yangtools.yang.model.api.ElementCountConstraint;
  16 import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
  17 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  18 import org.opendaylight.yangtools.yang.model.api.Status;
  19 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  20 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
  21 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  22 import org.opendaylight.yangtools.yang.model.api.stmt.DefaultEffectiveStatement;
  23 import org.opendaylight.yangtools.yang.model.api.stmt.LeafListEffectiveStatement;
  24 import org.opendaylight.yangtools.yang.model.api.stmt.LeafListStatement;
  25 import org.opendaylight.yangtools.yang.model.api.stmt.OrderedByEffectiveStatement;
  26 import org.opendaylight.yangtools.yang.model.api.stmt.StatusEffectiveStatement;
  27 import org.opendaylight.yangtools.yang.model.api.stmt.TypeEffectiveStatement;
  28 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseSchemaTreeStatementSupport;
  29 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.EffectiveStatementMixins.EffectiveStatementWithFlags.FlagsBuilder;
  30 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.EffectiveStmtUtils;
  31 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
  32 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  33 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  34
  35 abstract class AbstractLeafListStatementSupport
  36         extends BaseSchemaTreeStatementSupport<LeafListStatement, LeafListEffectiveStatement> {
  37     AbstractLeafListStatementSupport() {
  38         super(YangStmtMapping.LEAF_LIST);
  39     }
  40
  41     @Override
  42     protected final LeafListStatement createDeclared(final StmtContext<QName, LeafListStatement, ?> ctx,
  43             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
  44         return new RegularLeafListStatement(ctx.getArgument(), substatements);
  45     }
  46
  47     @Override
  48     protected final LeafListStatement createEmptyDeclared(final StmtContext<QName, LeafListStatement, ?> ctx) {
  49         return new EmptyLeafListStatement(ctx.getArgument());
  50     }
  51
  52     @Override
  53     protected LeafListEffectiveStatement createEffective(final Current<QName, LeafListStatement> stmt,
  54             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  55         final TypeEffectiveStatement<?> typeStmt = SourceException.throwIfNull(
  56                 findFirstStatement(substatements, TypeEffectiveStatement.class), stmt.sourceReference(),
  57                 "Leaf-list is missing a 'type' statement");
  58
  59         final SchemaPath path = stmt.getSchemaPath();
  60         final LeafListSchemaNode original = (LeafListSchemaNode) stmt.original();
  61
  62         final int flags = new FlagsBuilder()
  63                 .setHistory(stmt.history())
  64                 .setStatus(findFirstArgument(substatements, StatusEffectiveStatement.class, Status.CURRENT))
  65                 .setConfiguration(stmt.effectiveConfig())
  66                 .setUserOrdered(findFirstArgument(substatements, OrderedByEffectiveStatement.class, Ordering.SYSTEM)
  67                     .equals(Ordering.USER))
  68                 .toFlags();
  69         final ImmutableSet<String> defaultValues = substatements.stream()
  70                 .filter(DefaultEffectiveStatement.class::isInstance)
  71                 .map(DefaultEffectiveStatement.class::cast)
  72                 .map(DefaultEffectiveStatement::argument)
  73                 .collect(ImmutableSet.toImmutableSet());
  74
  75         // FIXME: We need to interpret the default value in terms of supplied element type
  76         SourceException.throwIf(
  77                 EffectiveStmtUtils.hasDefaultValueMarkedWithIfFeature(stmt.yangVersion(), typeStmt, defaultValues),
  78                 stmt.sourceReference(),
  79                 "Leaf-list '%s' has one of its default values '%s' marked with an if-feature statement.",
  80                 stmt.argument(), defaultValues);
  81
  82         // FIXME: RFC7950 section 7.7.4: we need to check for min-elements and defaultValues conflict
  83
  84         final Optional<ElementCountConstraint> elementCountConstraint =
  85                 EffectiveStmtUtils.createElementCountConstraint(substatements);
  86
  87         final LeafListStatement declared = stmt.declared();
  88         if (defaultValues.isEmpty()) {
  89             return original == null && !elementCountConstraint.isPresent()
  90                 ? new EmptyLeafListEffectiveStatement(declared, path, flags, substatements)
  91                     : new SlimLeafListEffectiveStatement(declared, path, flags, substatements, original,
  92                         elementCountConstraint.orElse(null));
  93         }
  94
  95         return new RegularLeafListEffectiveStatement(declared, path, flags, substatements, original, defaultValues,
  96             elementCountConstraint.orElse(null));
  97     }
  98 }