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.spi.meta;
10 import com.google.common.base.Function;
11 import com.google.common.base.Splitter;
12 import com.google.common.collect.ImmutableList;
13 import com.google.common.collect.ImmutableSet;
14 import com.google.common.collect.ImmutableSet.Builder;
15 import java.util.ArrayList;
16 import java.util.Collection;
17 import java.util.function.Predicate;
18 import org.opendaylight.yangtools.yang.common.QName;
19 import org.opendaylight.yangtools.yang.common.QNameModule;
20 import org.opendaylight.yangtools.yang.model.api.Rfc6020Mapping;
21 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
22 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
23 import org.opendaylight.yangtools.yang.model.api.stmt.KeyStatement;
24 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier;
25 import org.opendaylight.yangtools.yang.parser.spi.source.SupportedFeaturesNamespace;
26 import org.opendaylight.yangtools.yang.parser.spi.source.SupportedFeaturesNamespace.SupportedFeatures;
27 import org.opendaylight.yangtools.yang.parser.stmt.reactor.StatementContextBase;
28 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.UnknownStatementImpl;
30 public final class StmtContextUtils {
31 public static final Splitter LIST_KEY_SPLITTER = Splitter.on(' ').omitEmptyStrings().trimResults();
33 private static final Function<StmtContext<?, ?,?>, DeclaredStatement<?>> BUILD_DECLARED =
34 new Function<StmtContext<?,?,?>, DeclaredStatement<?>>() {
36 public DeclaredStatement<?> apply(final StmtContext<?, ?, ?> input) {
37 return input.buildDeclared();
41 private static final Function<StmtContext<?, ?,?>, EffectiveStatement<?,?>> BUILD_EFFECTIVE =
42 new Function<StmtContext<?,?,?>, EffectiveStatement<?,?>>() {
44 public EffectiveStatement<?, ?> apply(final StmtContext<?, ?, ?> input) {
45 return input.buildEffective();
49 private StmtContextUtils() {
50 throw new UnsupportedOperationException("Utility class");
53 @SuppressWarnings("unchecked")
54 public static <D extends DeclaredStatement<?>> Function<StmtContext<?, ? extends D, ?>, D> buildDeclared() {
55 return Function.class.cast(BUILD_DECLARED);
58 @SuppressWarnings("unchecked")
59 public static <E extends EffectiveStatement<?, ?>> Function<StmtContext<?, ?, ? extends E>, E> buildEffective() {
60 return Function.class.cast(BUILD_EFFECTIVE);
63 @SuppressWarnings("unchecked")
64 public static <AT, DT extends DeclaredStatement<AT>> AT firstAttributeOf(
65 final Iterable<? extends StmtContext<?, ?, ?>> contexts, final Class<DT> declaredType) {
66 for (StmtContext<?, ?, ?> ctx : contexts) {
67 if (producesDeclared(ctx, declaredType)) {
68 return (AT) ctx.getStatementArgument();
74 @SuppressWarnings("unchecked")
75 public static <AT, DT extends DeclaredStatement<AT>> AT firstAttributeOf(final StmtContext<?, ?, ?> ctx,
76 final Class<DT> declaredType) {
77 return producesDeclared(ctx, declaredType) ? (AT) ctx.getStatementArgument() : null;
80 public static <AT, DT extends DeclaredStatement<AT>> AT firstSubstatementAttributeOf(
81 final StmtContext<?, ?, ?> ctx, final Class<DT> declaredType) {
82 AT firstAttribute = firstAttributeOf(ctx.effectiveSubstatements(), declaredType);
83 return firstAttribute != null ? firstAttribute : firstAttributeOf(ctx.declaredSubstatements(), declaredType);
86 @SuppressWarnings("unchecked")
87 public static <AT,DT extends DeclaredStatement<AT>> StmtContext<AT, ?, ?> findFirstDeclaredSubstatement(
88 final StmtContext<?, ?, ?> stmtContext, final Class<DT> declaredType) {
89 for (StmtContext<?, ?, ?> subStmtContext : stmtContext.declaredSubstatements()) {
90 if (producesDeclared(subStmtContext,declaredType)) {
91 return (StmtContext<AT, ?, ?>) subStmtContext;
97 @SuppressWarnings("unchecked")
98 public static <AT, DT extends DeclaredStatement<AT>> Collection<StmtContext<AT, DT, ?>> findAllDeclaredSubstatements(
99 final StmtContext<?, ?, ?> stmtContext, final Class<DT> declaredType) {
100 ImmutableList.Builder<StmtContext<AT, DT, ?>> listBuilder = ImmutableList.builder();
101 for (StmtContext<?, ?, ?> subStmtContext : stmtContext.declaredSubstatements()) {
102 if (producesDeclared(subStmtContext, declaredType)) {
103 listBuilder.add((StmtContext<AT, DT, ?>) subStmtContext);
106 return listBuilder.build();
109 @SuppressWarnings("unchecked")
110 public static <AT, DT extends DeclaredStatement<AT>> Collection<StmtContext<AT, DT, ?>> findAllEffectiveSubstatements(
111 final StmtContext<?, ?, ?> stmtContext, final Class<DT> type) {
112 ImmutableList.Builder<StmtContext<AT, DT, ?>> listBuilder = ImmutableList.builder();
113 for (StmtContext<?, ?, ?> subStmtContext : stmtContext.effectiveSubstatements()) {
114 if (producesDeclared(subStmtContext, type)) {
115 listBuilder.add((StmtContext<AT, DT, ?>) subStmtContext);
118 return listBuilder.build();
121 public static <AT, DT extends DeclaredStatement<AT>> Collection<StmtContext<AT, DT, ?>> findAllSubstatements(
122 final StmtContext<?, ?, ?> stmtContext, final Class<DT> type) {
123 ImmutableList.Builder<StmtContext<AT, DT, ?>> listBuilder = ImmutableList.builder();
124 listBuilder.addAll(findAllDeclaredSubstatements(stmtContext, type));
125 listBuilder.addAll(findAllEffectiveSubstatements(stmtContext, type));
126 return listBuilder.build();
129 @SuppressWarnings("unchecked")
130 public static <AT,DT extends DeclaredStatement<AT>> StmtContext<AT, ?, ?> findFirstEffectiveSubstatement(
131 final StmtContext<?, ?, ?> stmtContext, final Class<DT> declaredType) {
132 for (StmtContext<?, ?, ?> subStmtContext : stmtContext.effectiveSubstatements()) {
133 if (producesDeclared(subStmtContext,declaredType)) {
134 return (StmtContext<AT, ?, ?>) subStmtContext;
140 public static <AT,DT extends DeclaredStatement<AT>> StmtContext<AT, ?, ?> findFirstSubstatement(
141 final StmtContext<?, ?, ?> stmtContext, final Class<DT> declaredType) {
142 StmtContext<AT, ?, ?> declaredSubstatement = findFirstDeclaredSubstatement(stmtContext, declaredType);
143 return declaredSubstatement != null ? declaredSubstatement : findFirstEffectiveSubstatement(stmtContext, declaredType);
147 public static StmtContext<?, ?, ?> findFirstDeclaredSubstatement(final StmtContext<?, ?, ?> stmtContext,
148 int startIndex, final Class<? extends DeclaredStatement<?>>... types) {
149 if (startIndex >= types.length) {
153 for (StmtContext<?, ?, ?> subStmtContext : stmtContext.declaredSubstatements()) {
154 if (producesDeclared(subStmtContext,types[startIndex])) {
155 return startIndex + 1 == types.length ? subStmtContext
156 : findFirstDeclaredSubstatement(subStmtContext, ++startIndex, types);
162 public static <DT extends DeclaredStatement<?>> StmtContext<?, ?, ?> findFirstDeclaredSubstatementOnSublevel(
163 final StmtContext<?, ?, ?> stmtContext, final Class<DT> declaredType, int sublevel) {
164 for (StmtContext<?, ?, ?> subStmtContext : stmtContext.declaredSubstatements()) {
165 if (sublevel == 1 && producesDeclared(subStmtContext, declaredType)) {
166 return subStmtContext;
169 final StmtContext<?, ?, ?> result = findFirstDeclaredSubstatementOnSublevel(
170 subStmtContext, declaredType, --sublevel);
171 if (result != null) {
180 public static <DT extends DeclaredStatement<?>> StmtContext<?, ?, ?> findDeepFirstDeclaredSubstatement(
181 final StmtContext<?, ?, ?> stmtContext, final Class<DT> declaredType) {
182 for (StmtContext<?, ?, ?> subStmtContext : stmtContext.declaredSubstatements()) {
183 if (producesDeclared(subStmtContext, declaredType)) {
184 return subStmtContext;
187 final StmtContext<?, ?, ?> result = findDeepFirstDeclaredSubstatement(subStmtContext, declaredType);
188 if (result != null) {
196 public static boolean producesDeclared(final StmtContext<?, ?, ?> ctx,
197 final Class<? extends DeclaredStatement<?>> type) {
198 return type.isAssignableFrom(ctx.getPublicDefinition().getDeclaredRepresentationClass());
201 public static boolean isInExtensionBody(final StmtContext<?,?,?> stmtCtx) {
202 StmtContext<?,?,?> current = stmtCtx;
203 while (!current.getParentContext().isRootContext()) {
204 current = current.getParentContext();
205 if (producesDeclared(current, UnknownStatementImpl.class)) {
213 public static boolean isUnknownStatement(final StmtContext<?, ?, ?> stmtCtx) {
214 return producesDeclared(stmtCtx, UnknownStatementImpl.class);
217 public static Collection<SchemaNodeIdentifier> replaceModuleQNameForKey(
218 final StmtContext<Collection<SchemaNodeIdentifier>, KeyStatement, ?> keyStmtCtx,
219 final QNameModule newQNameModule) {
221 final Builder<SchemaNodeIdentifier> builder = ImmutableSet.builder();
222 boolean replaced = false;
223 for (SchemaNodeIdentifier arg : keyStmtCtx.getStatementArgument()) {
224 final QName qname = arg.getLastComponent();
225 if (!newQNameModule.equals(qname)) {
226 final QName newQname = keyStmtCtx.getFromNamespace(QNameCacheNamespace.class,
227 QName.create(newQNameModule, qname.getLocalName()));
228 builder.add(SchemaNodeIdentifier.create(false, newQname));
235 // This makes sure we reuse the collection when a grouping is instantiated in the same module
236 return replaced ? builder.build() : keyStmtCtx.getStatementArgument();
239 public static boolean areFeaturesSupported(final StmtContext<?, ?, ?> stmtContext) {
240 Predicate<QName> isFeatureSupported = stmtContext.getFromNamespace(SupportedFeaturesNamespace.class,
241 SupportedFeatures.SUPPORTED_FEATURES);
242 Collection<StatementContextBase<?, ?, ?>> substatements = new ArrayList<>();
243 substatements.addAll(stmtContext.declaredSubstatements());
244 substatements.addAll(stmtContext.effectiveSubstatements());
246 boolean isSupported = false;
247 boolean containsIfFeature = false;
248 for (StatementContextBase<?, ?, ?> stmt: substatements) {
249 if (stmt.getPublicDefinition().equals(Rfc6020Mapping.IF_FEATURE)) {
250 containsIfFeature = true;
251 if (isFeatureSupported.test((QName) stmt.getStatementArgument())) {
260 return !containsIfFeature || isSupported;