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