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.QName;
  14 import org.opendaylight.yangtools.yang.model.api.ElementCountConstraint;
  15 import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
  16 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  17 import org.opendaylight.yangtools.yang.model.api.Status;
  18 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  19 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  20 import org.opendaylight.yangtools.yang.model.api.stmt.DefaultEffectiveStatement;
  21 import org.opendaylight.yangtools.yang.model.api.stmt.LeafListEffectiveStatement;
  22 import org.opendaylight.yangtools.yang.model.api.stmt.LeafListStatement;
  23 import org.opendaylight.yangtools.yang.model.api.stmt.OrderedByEffectiveStatement;
  24 import org.opendaylight.yangtools.yang.model.api.stmt.StatusEffectiveStatement;
  25 import org.opendaylight.yangtools.yang.model.api.stmt.TypeEffectiveStatement;
  26 import org.opendaylight.yangtools.yang.parser.rfc7950.namespace.ChildSchemaNodeNamespace;
  27 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseQNameStatementSupport;
  28 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.EffectiveStatementMixins.EffectiveStatementWithFlags.FlagsBuilder;
  29 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.EffectiveStmtUtils;
  30 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  31 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
  32 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
  33 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  34
  35 abstract class AbstractLeafListStatementSupport
  36         extends BaseQNameStatementSupport<LeafListStatement, LeafListEffectiveStatement> {
  37     AbstractLeafListStatementSupport() {
  38         super(YangStmtMapping.LEAF_LIST);
  39     }
  40
  41     @Override
  42     public final void onStatementAdded(final Mutable<QName, LeafListStatement, LeafListEffectiveStatement> stmt) {
  43         stmt.coerceParentContext().addToNs(ChildSchemaNodeNamespace.class, stmt.coerceStatementArgument(), stmt);
  44     }
  45
  46     @Override
  47     public final QName parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
  48         return StmtContextUtils.parseIdentifier(ctx, value);
  49     }
  50
  51     @Override
  52     public final LeafListStatement createDeclared(final StmtContext<QName, LeafListStatement, ?> ctx) {
  53         return new LeafListStatementImpl(ctx);
  54     }
  55
  56     @Override
  57     protected final LeafListEffectiveStatement createEffective(
  58             final StmtContext<QName, LeafListStatement, LeafListEffectiveStatement> ctx,
  59             final LeafListStatement declared,
  60             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  61         final TypeEffectiveStatement<?> typeStmt = SourceException.throwIfNull(
  62             findFirstStatement(substatements, TypeEffectiveStatement.class), ctx.getStatementSourceReference(),
  63                 "Leaf-list is missing a 'type' statement");
  64
  65         final SchemaPath path = ctx.getSchemaPath().get();
  66         final LeafListSchemaNode original = (LeafListSchemaNode) ctx.getOriginalCtx()
  67                 .map(StmtContext::buildEffective).orElse(null);
  68
  69         final int flags = new FlagsBuilder()
  70                 .setHistory(ctx.getCopyHistory())
  71                 .setStatus(findFirstArgument(substatements, StatusEffectiveStatement.class, Status.CURRENT))
  72                 .setConfiguration(ctx.isConfiguration())
  73                 .setUserOrdered(findFirstArgument(substatements, OrderedByEffectiveStatement.class, "system")
  74                     .equals("user"))
  75                 .toFlags();
  76         final ImmutableSet<String> defaultValues = substatements.stream()
  77                 .filter(DefaultEffectiveStatement.class::isInstance)
  78                 .map(DefaultEffectiveStatement.class::cast)
  79                 .map(DefaultEffectiveStatement::argument)
  80                 .collect(ImmutableSet.toImmutableSet());
  81
  82         // FIXME: We need to interpret the default value in terms of supplied element type
  83         SourceException.throwIf(
  84             EffectiveStmtUtils.hasDefaultValueMarkedWithIfFeature(ctx.getRootVersion(), typeStmt, defaultValues),
  85             ctx.getStatementSourceReference(),
  86             "Leaf-list '%s' has one of its default values '%s' marked with an if-feature statement.",
  87             ctx.getStatementArgument(), defaultValues);
  88
  89         // FIXME: RFC7950 section 7.7.4: we need to check for min-elements and defaultValues conflict
  90
  91         final Optional<ElementCountConstraint> elementCountConstraint =
  92                 EffectiveStmtUtils.createElementCountConstraint(substatements);
  93
  94         if (defaultValues.isEmpty()) {
  95             return original == null && !elementCountConstraint.isPresent()
  96                     ? new EmptyLeafListEffectiveStatement(declared, path, flags, substatements)
  97                             : new SlimLeafListEffectiveStatement(declared, path, flags, substatements, original,
  98                                 elementCountConstraint.orElse(null));
  99         }
 100
 101         return new RegularLeafListEffectiveStatement(declared, path, flags, substatements, original, defaultValues,
 102             elementCountConstraint.orElse(null));
 103     }
 104
 105     @Override
 106     protected final LeafListEffectiveStatement createEmptyEffective(
 107             final StmtContext<QName, LeafListStatement, LeafListEffectiveStatement> ctx,
 108             final LeafListStatement declared) {
 109         throw new UnsupportedOperationException("Leaf statements must have at least one substatement");
 110     }
 111 }