yang/yang-parser-impl/src/main/java/org/opendaylight/yangtools/yang/parser/impl/YangParserImpl.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.impl;
   9
  10 import static com.google.common.collect.ImmutableMap.toImmutableMap;
  11 import static java.util.Objects.requireNonNull;
  12 import static java.util.function.Function.identity;
  13
  14 import com.google.common.collect.ImmutableList;
  15 import com.google.common.collect.SetMultimap;
  16 import java.io.IOException;
  17 import java.util.Collection;
  18 import java.util.List;
  19 import java.util.Map;
  20 import java.util.Set;
  21 import javax.xml.transform.TransformerException;
  22 import org.opendaylight.yangtools.yang.common.QName;
  23 import org.opendaylight.yangtools.yang.common.QNameModule;
  24 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  25 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
  26 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  27 import org.opendaylight.yangtools.yang.model.api.stmt.ModuleEffectiveStatement;
  28 import org.opendaylight.yangtools.yang.model.parser.api.YangParser;
  29 import org.opendaylight.yangtools.yang.model.parser.api.YangParserException;
  30 import org.opendaylight.yangtools.yang.model.parser.api.YangSyntaxErrorException;
  31 import org.opendaylight.yangtools.yang.model.repo.api.SchemaSourceRepresentation;
  32 import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
  33 import org.opendaylight.yangtools.yang.model.repo.api.YinDomSchemaSource;
  34 import org.opendaylight.yangtools.yang.model.repo.api.YinTextSchemaSource;
  35 import org.opendaylight.yangtools.yang.model.repo.api.YinXmlSchemaSource;
  36 import org.opendaylight.yangtools.yang.parser.rfc7950.repo.ASTSchemaSource;
  37 import org.opendaylight.yangtools.yang.parser.rfc7950.repo.YangStatementStreamSource;
  38 import org.opendaylight.yangtools.yang.parser.rfc7950.repo.YinStatementStreamSource;
  39 import org.opendaylight.yangtools.yang.parser.rfc7950.repo.YinTextToDomTransformer;
  40 import org.opendaylight.yangtools.yang.parser.spi.meta.ReactorException;
  41 import org.opendaylight.yangtools.yang.parser.spi.source.StatementStreamSource;
  42 import org.opendaylight.yangtools.yang.parser.stmt.reactor.CrossSourceStatementReactor.BuildAction;
  43 import org.xml.sax.SAXException;
  44
  45 final class YangParserImpl implements YangParser {
  46     private static final Collection<Class<? extends SchemaSourceRepresentation>> REPRESENTATIONS = ImmutableList.of(
  47         ASTSchemaSource.class, YangTextSchemaSource.class, YinDomSchemaSource.class, YinXmlSchemaSource.class,
  48         YinTextSchemaSource.class);
  49
  50     private final BuildAction buildAction;
  51
  52     YangParserImpl(final BuildAction buildAction) {
  53         this.buildAction = requireNonNull(buildAction);
  54     }
  55
  56     @Override
  57     public Collection<Class<? extends SchemaSourceRepresentation>> supportedSourceRepresentations() {
  58         return REPRESENTATIONS;
  59     }
  60
  61     @Override
  62     public Set<QName> supportedStatements() {
  63         // TODO Auto-generated method stub
  64         return null;
  65     }
  66
  67     @Override
  68     public YangParser addSource(final SchemaSourceRepresentation source) throws IOException, YangSyntaxErrorException {
  69         buildAction.addSources(sourceToStatementStream(source));
  70         return this;
  71     }
  72
  73     @Override
  74     public YangParser addLibSource(final SchemaSourceRepresentation source) throws IOException,
  75             YangSyntaxErrorException {
  76         buildAction.addLibSources(sourceToStatementStream(source));
  77         return this;
  78     }
  79
  80     @Override
  81     public YangParser setSupportedFeatures(final Set<QName> supportedFeatures) {
  82         buildAction.setSupportedFeatures(supportedFeatures);
  83         return this;
  84     }
  85
  86     @Override
  87     public YangParser setModulesWithSupportedDeviations(
  88             final SetMultimap<QNameModule, QNameModule> modulesDeviatedByModules) {
  89         buildAction.setModulesWithSupportedDeviations(modulesDeviatedByModules);
  90         return this;
  91     }
  92
  93     @Override
  94     public List<DeclaredStatement<?>> buildDeclaredModel() throws YangParserException {
  95         try {
  96             return buildAction.build().getRootStatements();
  97         } catch (ReactorException e) {
  98             throw decodeReactorException(e);
  99         }
 100     }
 101
 102     @Override
 103     public Map<QNameModule, ModuleEffectiveStatement> buildEffectiveModel() throws YangParserException {
 104         final List<EffectiveStatement<?, ?>> effectiveStatements;
 105         try {
 106             effectiveStatements = buildAction.buildEffective().getRootEffectiveStatements();
 107         } catch (ReactorException e) {
 108             throw decodeReactorException(e);
 109         }
 110
 111         return effectiveStatements.stream()
 112                 .filter(ModuleEffectiveStatement.class::isInstance).map(ModuleEffectiveStatement.class::cast)
 113                 .collect(toImmutableMap(ModuleEffectiveStatement::localQNameModule, identity()));
 114     }
 115
 116     @Override
 117     public SchemaContext buildSchemaContext() throws YangParserException {
 118         try {
 119             return buildAction.buildEffective();
 120         } catch (ReactorException e) {
 121             throw decodeReactorException(e);
 122         }
 123     }
 124
 125     private static YangParserException decodeReactorException(final ReactorException reported) {
 126         // FIXME: map exception in some reasonable manner
 127         return new YangParserException("Failed to assemble sources", reported);
 128     }
 129
 130     private static StatementStreamSource sourceToStatementStream(final SchemaSourceRepresentation source)
 131             throws IOException, YangSyntaxErrorException {
 132         requireNonNull(source);
 133         if (source instanceof ASTSchemaSource) {
 134             return YangStatementStreamSource.create((ASTSchemaSource) source);
 135         } else if (source instanceof YangTextSchemaSource) {
 136             return YangStatementStreamSource.create((YangTextSchemaSource) source);
 137         } else if (source instanceof YinDomSchemaSource) {
 138             return YinStatementStreamSource.create((YinDomSchemaSource) source);
 139         } else if (source instanceof YinTextSchemaSource) {
 140             try {
 141                 return YinStatementStreamSource.create(YinTextToDomTransformer.transformSource(
 142                     (YinTextSchemaSource) source));
 143             } catch (SAXException e) {
 144                 throw new YangSyntaxErrorException(source.getIdentifier(), 0, 0, "Failed to parse XML text", e);
 145             }
 146         } else if (source instanceof YinXmlSchemaSource) {
 147             try {
 148                 return YinStatementStreamSource.create((YinXmlSchemaSource) source);
 149             } catch (TransformerException e) {
 150                 throw new YangSyntaxErrorException(source.getIdentifier(), 0, 0,
 151                     "Failed to assemble in-memory representation", e);
 152             }
 153         } else {
 154             throw new IllegalArgumentException("Unsupported source " + source);
 155         }
 156     }
 157 }