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.spi.meta.EffectiveStmtCtx.Current;
  25 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  26
  27 abstract class AbstractCaseStatementSupport
  28         extends BaseImplicitStatementSupport<CaseStatement, CaseEffectiveStatement> {
  29     AbstractCaseStatementSupport() {
  30         super(YangStmtMapping.CASE);
  31     }
  32
  33     @Override
  34     protected final CaseStatement createDeclared(final StmtContext<QName, CaseStatement, ?> ctx,
  35             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
  36         final StatementSource source = ctx.source();
  37         switch (source) {
  38             case CONTEXT:
  39                 return new RegularUndeclaredCaseStatement(ctx.getArgument(), substatements);
  40             case DECLARATION:
  41                 return new RegularCaseStatement(ctx.getArgument(), substatements);
  42             default:
  43                 throw new IllegalStateException("Unhandled statement source " + source);
  44         }
  45     }
  46
  47     @Override
  48     protected final CaseStatement createEmptyDeclared(final StmtContext<QName, CaseStatement, ?> ctx) {
  49         final StatementSource source = ctx.source();
  50         switch (source) {
  51             case CONTEXT:
  52                 return new EmptyUndeclaredCaseStatement(ctx.getArgument());
  53             case DECLARATION:
  54                 return new EmptyCaseStatement(ctx.getArgument());
  55             default:
  56                 throw new IllegalStateException("Unhandled statement source " + source);
  57         }
  58     }
  59
  60     @Override
  61     protected final CaseEffectiveStatement createDeclaredEffective(final Current<QName, CaseStatement> stmt,
  62             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  63         return new DeclaredCaseEffectiveStatement(stmt.declared(), substatements, stmt.sourceReference(),
  64             computeFlags(stmt, substatements), stmt.getSchemaPath(), findOriginal(stmt));
  65     }
  66
  67     @Override
  68     protected final CaseEffectiveStatement createUndeclaredEffective(final Current<QName, CaseStatement> stmt,
  69             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  70         return new UndeclaredCaseEffectiveStatement(substatements, stmt.sourceReference(),
  71             computeFlags(stmt, substatements), stmt.getSchemaPath(), findOriginal(stmt));
  72     }
  73
  74     private static @Nullable CaseSchemaNode findOriginal(final Current<?, ?> stmt) {
  75         return (CaseSchemaNode) stmt.original();
  76     }
  77
  78     private static int computeFlags(final Current<?, ?> stmt,
  79             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  80         return new FlagsBuilder()
  81                 .setHistory(stmt.history())
  82                 .setStatus(findFirstArgument(substatements, StatusEffectiveStatement.class, Status.CURRENT))
  83                 .setConfiguration(stmt.effectiveConfig()
  84                     && stmt.caerbannog().allSubstatementsStream().anyMatch(StmtContext::isConfiguration))
  85                 .toFlags();
  86     }
  87 }