yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/case_/AbstractCaseStatementSupport.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.case_;
   9
  10 import com.google.common.collect.ImmutableList;
  11 import org.eclipse.jdt.annotation.Nullable;
  12 import org.opendaylight.yangtools.yang.common.QName;
  13 import org.opendaylight.yangtools.yang.model.api.CaseSchemaNode;
  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.meta.StatementSource;
  19 import org.opendaylight.yangtools.yang.model.api.stmt.CaseEffectiveStatement;
  20 import org.opendaylight.yangtools.yang.model.api.stmt.CaseStatement;
  21 import org.opendaylight.yangtools.yang.model.api.stmt.StatusEffectiveStatement;
  22 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseImplicitStatementSupport;
  23 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.EffectiveStatementMixins.EffectiveStatementWithFlags.FlagsBuilder;
  24 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.SubstatementIndexingException;
  25 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
  26 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  27 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  28
  29 abstract class AbstractCaseStatementSupport
  30         extends BaseImplicitStatementSupport<CaseStatement, CaseEffectiveStatement> {
  31     AbstractCaseStatementSupport() {
  32         super(YangStmtMapping.CASE);
  33     }
  34
  35     @Override
  36     protected final CaseStatement createDeclared(final StmtContext<QName, CaseStatement, ?> ctx,
  37             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
  38         final StatementSource source = ctx.source();
  39         switch (source) {
  40             case CONTEXT:
  41                 return new RegularUndeclaredCaseStatement(ctx.getArgument(), substatements);
  42             case DECLARATION:
  43                 return new RegularCaseStatement(ctx.getArgument(), substatements);
  44             default:
  45                 throw new IllegalStateException("Unhandled statement source " + source);
  46         }
  47     }
  48
  49     @Override
  50     protected final CaseStatement createEmptyDeclared(final StmtContext<QName, CaseStatement, ?> ctx) {
  51         final StatementSource source = ctx.source();
  52         switch (source) {
  53             case CONTEXT:
  54                 return new EmptyUndeclaredCaseStatement(ctx.getArgument());
  55             case DECLARATION:
  56                 return new EmptyCaseStatement(ctx.getArgument());
  57             default:
  58                 throw new IllegalStateException("Unhandled statement source " + source);
  59         }
  60     }
  61
  62     @Override
  63     protected final CaseEffectiveStatement createDeclaredEffective(final Current<QName, CaseStatement> stmt,
  64             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  65         try {
  66             return new DeclaredCaseEffectiveStatement(stmt.declared(), substatements, computeFlags(stmt, substatements),
  67                 stmt.getSchemaPath(), findOriginal(stmt));
  68         } catch (SubstatementIndexingException e) {
  69             throw new SourceException(e.getMessage(), stmt.sourceReference(), e);
  70         }
  71     }
  72
  73     @Override
  74     protected final CaseEffectiveStatement createUndeclaredEffective(final Current<QName, CaseStatement> stmt,
  75             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  76         try {
  77             return new UndeclaredCaseEffectiveStatement(substatements, computeFlags(stmt, substatements),
  78                 stmt.getSchemaPath(), findOriginal(stmt));
  79         } catch (SubstatementIndexingException e) {
  80             throw new SourceException(e.getMessage(), stmt.sourceReference(), e);
  81         }
  82     }
  83
  84     private static @Nullable CaseSchemaNode findOriginal(final Current<?, ?> stmt) {
  85         return (CaseSchemaNode) stmt.original();
  86     }
  87
  88     private static int computeFlags(final Current<?, ?> stmt,
  89             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  90         return new FlagsBuilder()
  91                 .setHistory(stmt.history())
  92                 .setStatus(findFirstArgument(substatements, StatusEffectiveStatement.class, Status.CURRENT))
  93                 .setConfiguration(stmt.effectiveConfig()
  94                     && stmt.caerbannog().allSubstatementsStream().anyMatch(StmtContext::isConfiguration))
  95                 .toFlags();
  96     }
  97 }