2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.yangtools.yang.parser.rfc7950.stmt.import_;
10 import static com.google.common.base.Preconditions.checkState;
11 import static com.google.common.base.Verify.verify;
12 import static com.google.common.base.Verify.verifyNotNull;
13 import static java.util.Objects.requireNonNull;
14 import static org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase.SOURCE_PRE_LINKAGE;
15 import static org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils.firstAttributeOf;
17 import com.google.common.annotations.Beta;
18 import com.google.common.collect.ImmutableList;
20 import java.util.Collection;
21 import org.eclipse.jdt.annotation.NonNull;
22 import org.opendaylight.yangtools.openconfig.model.api.OpenConfigStatements;
23 import org.opendaylight.yangtools.yang.common.Empty;
24 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
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.ImportEffectiveStatement;
28 import org.opendaylight.yangtools.yang.model.api.stmt.ImportStatement;
29 import org.opendaylight.yangtools.yang.model.api.stmt.PrefixStatement;
30 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseStringStatementSupport;
31 import org.opendaylight.yangtools.yang.parser.spi.PreLinkageModuleNamespace;
32 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
33 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
34 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
35 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceAction;
36 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceContext;
37 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.Prerequisite;
38 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
39 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
40 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
41 import org.opendaylight.yangtools.yang.parser.spi.source.ImpPrefixToNamespace;
42 import org.opendaylight.yangtools.yang.parser.spi.source.ModuleNameToNamespace;
43 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
46 public final class ImportStatementSupport
47 extends BaseStringStatementSupport<ImportStatement, ImportEffectiveStatement> {
48 private static final @NonNull ImportStatementSupport RFC6020_INSTANCE = new ImportStatementSupport(
49 SubstatementValidator.builder(YangStmtMapping.IMPORT)
50 .addMandatory(YangStmtMapping.PREFIX)
51 .addOptional(YangStmtMapping.REVISION_DATE)
52 .addOptional(OpenConfigStatements.OPENCONFIG_VERSION)
54 private static final @NonNull ImportStatementSupport RFC7950_INSTANCE = new ImportStatementSupport(
55 SubstatementValidator.builder(YangStmtMapping.IMPORT)
56 .addMandatory(YangStmtMapping.PREFIX)
57 .addOptional(YangStmtMapping.REVISION_DATE)
58 .addOptional(OpenConfigStatements.OPENCONFIG_VERSION)
59 .addOptional(YangStmtMapping.DESCRIPTION)
60 .addOptional(YangStmtMapping.REFERENCE)
63 private final SubstatementValidator validator;
65 private ImportStatementSupport(final SubstatementValidator validator) {
66 super(YangStmtMapping.IMPORT, CopyPolicy.REJECT);
67 this.validator = requireNonNull(validator);
70 public static @NonNull ImportStatementSupport rfc6020Instance() {
71 return RFC6020_INSTANCE;
74 public static @NonNull ImportStatementSupport rfc7950Instance() {
75 return RFC7950_INSTANCE;
79 public void onPreLinkageDeclared(final Mutable<String, ImportStatement, ImportEffectiveStatement> stmt) {
81 * Add ModuleIdentifier of a module which is required by this module.
82 * Based on this information, required modules are searched from library
85 stmt.addRequiredSource(RevisionImport.getImportedSourceIdentifier(stmt));
87 final String moduleName = stmt.getArgument();
88 final ModelActionBuilder importAction = stmt.newInferenceAction(SOURCE_PRE_LINKAGE);
89 final Prerequisite<StmtContext<?, ?, ?>> imported = importAction.requiresCtx(stmt,
90 PreLinkageModuleNamespace.class, moduleName, SOURCE_PRE_LINKAGE);
91 importAction.mutatesCtx(stmt.getRoot(), SOURCE_PRE_LINKAGE);
93 importAction.apply(new InferenceAction() {
95 public void apply(final InferenceContext ctx) {
96 final StmtContext<?, ?, ?> importedModuleContext = imported.resolve(ctx);
97 verify(moduleName.equals(importedModuleContext.getRawArgument()));
98 final URI importedModuleNamespace = verifyNotNull(
99 importedModuleContext.getFromNamespace(ModuleNameToNamespace.class, moduleName));
100 final String impPrefix = SourceException.throwIfNull(
101 firstAttributeOf(stmt.declaredSubstatements(), PrefixStatement.class), stmt,
102 "Missing prefix statement");
104 stmt.addToNs(ImpPrefixToNamespace.class, impPrefix, importedModuleNamespace);
108 public void prerequisiteFailed(final Collection<? extends Prerequisite<?>> failed) {
109 InferenceException.throwIf(failed.contains(imported), stmt, "Imported module [%s] was not found.",
116 public void onLinkageDeclared(final Mutable<String, ImportStatement, ImportEffectiveStatement> stmt) {
117 if (stmt.isEnabledSemanticVersioning()) {
118 SemanticVersionImport.onLinkageDeclared(stmt);
120 RevisionImport.onLinkageDeclared(stmt);
125 protected SubstatementValidator getSubstatementValidator() {
130 protected ImportStatement createDeclared(final StmtContext<String, ImportStatement, ?> ctx,
131 final ImmutableList<? extends DeclaredStatement<?>> substatements) {
132 return new ImportStatementImpl(ctx.getRawArgument(), substatements);
136 protected ImportStatement createEmptyDeclared(final StmtContext<String, ImportStatement, ?> ctx) {
137 throw new IllegalStateException("Unexpected empty declared import statement");
141 protected ImportEffectiveStatement createEffective(final Current<String, ImportStatement> stmt,
142 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
143 checkState(!substatements.isEmpty(), "Unexpected empty effective import statement");
145 return new ImportEffectiveStatementImpl(stmt.declared(), substatements,
146 verifyNotNull(stmt.getFromNamespace(ImportedVersionNamespace.class, Empty.getInstance())));