yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/leaf/LeafStatementSupport.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;
   9
  10 import com.google.common.collect.ImmutableList;
  11 import org.opendaylight.yangtools.yang.common.QName;
  12 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
  13 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  14 import org.opendaylight.yangtools.yang.model.api.Status;
  15 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  16 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
  17 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  18 import org.opendaylight.yangtools.yang.model.api.stmt.DefaultEffectiveStatement;
  19 import org.opendaylight.yangtools.yang.model.api.stmt.LeafEffectiveStatement;
  20 import org.opendaylight.yangtools.yang.model.api.stmt.LeafStatement;
  21 import org.opendaylight.yangtools.yang.model.api.stmt.MandatoryEffectiveStatement;
  22 import org.opendaylight.yangtools.yang.model.api.stmt.StatusEffectiveStatement;
  23 import org.opendaylight.yangtools.yang.model.api.stmt.TypeEffectiveStatement;
  24 import org.opendaylight.yangtools.yang.parser.rfc7950.namespace.ChildSchemaNodeNamespace;
  25 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseQNameStatementSupport;
  26 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.EffectiveStatementMixins.EffectiveStatementWithFlags.FlagsBuilder;
  27 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.EffectiveStmtUtils;
  28 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  29 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
  30 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
  31 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  32 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  33
  34 public final class LeafStatementSupport extends BaseQNameStatementSupport<LeafStatement, LeafEffectiveStatement> {
  35     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(YangStmtMapping
  36         .LEAF)
  37         .addOptional(YangStmtMapping.CONFIG)
  38         .addOptional(YangStmtMapping.DEFAULT)
  39         .addOptional(YangStmtMapping.DESCRIPTION)
  40         .addAny(YangStmtMapping.IF_FEATURE)
  41         .addOptional(YangStmtMapping.MANDATORY)
  42         .addAny(YangStmtMapping.MUST)
  43         .addOptional(YangStmtMapping.REFERENCE)
  44         .addOptional(YangStmtMapping.STATUS)
  45         .addMandatory(YangStmtMapping.TYPE)
  46         .addOptional(YangStmtMapping.UNITS)
  47         .addOptional(YangStmtMapping.WHEN)
  48         .build();
  49     private static final LeafStatementSupport INSTANCE = new LeafStatementSupport();
  50
  51     private LeafStatementSupport() {
  52         super(YangStmtMapping.LEAF);
  53     }
  54
  55     public static LeafStatementSupport getInstance() {
  56         return INSTANCE;
  57     }
  58
  59     @Override
  60     public QName parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
  61         return StmtContextUtils.parseIdentifier(ctx,value);
  62     }
  63
  64     @Override
  65     public void onStatementAdded(final Mutable<QName, LeafStatement, LeafEffectiveStatement> stmt) {
  66         stmt.coerceParentContext().addToNs(ChildSchemaNodeNamespace.class, stmt.coerceStatementArgument(), stmt);
  67     }
  68
  69     @Override
  70     public void onFullDefinitionDeclared(final Mutable<QName, LeafStatement, LeafEffectiveStatement> ctx) {
  71         super.onFullDefinitionDeclared(ctx);
  72         StmtContextUtils.validateIfFeatureAndWhenOnListKeys(ctx);
  73     }
  74
  75     @Override
  76     protected SubstatementValidator getSubstatementValidator() {
  77         return SUBSTATEMENT_VALIDATOR;
  78     }
  79
  80     @Override
  81     protected LeafStatement createDeclared(final StmtContext<QName, LeafStatement, ?> ctx,
  82             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
  83         return new RegularLeafStatement(ctx.coerceStatementArgument(), substatements);
  84     }
  85
  86     @Override
  87     protected LeafStatement createEmptyDeclared(final StmtContext<QName, LeafStatement, ?> ctx) {
  88         return new EmptyLeafStatement(ctx.coerceStatementArgument());
  89     }
  90
  91     @Override
  92     protected LeafEffectiveStatement createEffective(
  93             final StmtContext<QName, LeafStatement, LeafEffectiveStatement> ctx, final LeafStatement declared,
  94             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  95         final TypeEffectiveStatement<?> typeStmt = SourceException.throwIfNull(
  96             findFirstStatement(substatements, TypeEffectiveStatement.class), ctx.getStatementSourceReference(),
  97                 "Leaf is missing a 'type' statement");
  98         final String dflt = findFirstArgument(substatements, DefaultEffectiveStatement.class, null);
  99         SourceException.throwIf(
 100             EffectiveStmtUtils.hasDefaultValueMarkedWithIfFeature(ctx.getRootVersion(), typeStmt, dflt),
 101             ctx.getStatementSourceReference(),
 102             "Leaf '%s' has default value '%s' marked with an if-feature statement.", ctx.getStatementArgument(), dflt);
 103
 104         final SchemaPath path = ctx.getSchemaPath().get();
 105         final LeafSchemaNode original = (LeafSchemaNode) ctx.getOriginalCtx().map(StmtContext::buildEffective)
 106                 .orElse(null);
 107         final int flags = new FlagsBuilder()
 108                 .setHistory(ctx.getCopyHistory())
 109                 .setStatus(findFirstArgument(substatements, StatusEffectiveStatement.class, Status.CURRENT))
 110                 .setConfiguration(ctx.isConfiguration())
 111                 .setMandatory(findFirstArgument(substatements, MandatoryEffectiveStatement.class, Boolean.FALSE))
 112                 .toFlags();
 113
 114         return original == null ? new EmptyLeafEffectiveStatement(declared, path, flags, substatements)
 115                 : new RegularLeafEffectiveStatement(declared, path, flags, substatements, original);
 116     }
 117
 118     @Override
 119     protected LeafEffectiveStatement createEmptyEffective(
 120             final StmtContext<QName, LeafStatement, LeafEffectiveStatement> ctx, final LeafStatement declared) {
 121         throw new UnsupportedOperationException("Leaf statements must have at least one substatement");
 122     }
 123 }