2 * Copyright (c) 2017 Pantheon Technologies, s.r.o. 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.augment;
10 import static com.google.common.base.Verify.verify;
12 import com.google.common.collect.ImmutableList;
13 import com.google.common.collect.Lists;
14 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
15 import java.util.List;
16 import java.util.Objects;
17 import java.util.regex.Pattern;
18 import org.opendaylight.yangtools.yang.common.Empty;
19 import org.opendaylight.yangtools.yang.model.api.AugmentationSchemaNode;
20 import org.opendaylight.yangtools.yang.model.api.Status;
21 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
22 import org.opendaylight.yangtools.yang.model.api.meta.DeclarationReference;
23 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
24 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
25 import org.opendaylight.yangtools.yang.model.api.meta.StatementDefinition;
26 import org.opendaylight.yangtools.yang.model.api.stmt.AugmentEffectiveStatement;
27 import org.opendaylight.yangtools.yang.model.api.stmt.AugmentStatement;
28 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier;
29 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Absolute;
30 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Descendant;
31 import org.opendaylight.yangtools.yang.model.api.stmt.StatusEffectiveStatement;
32 import org.opendaylight.yangtools.yang.model.api.stmt.WhenEffectiveStatement;
33 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatementDecorators;
34 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatements;
35 import org.opendaylight.yangtools.yang.model.ri.stmt.EffectiveStatements;
36 import org.opendaylight.yangtools.yang.model.spi.meta.EffectiveStatementMixins.EffectiveStatementWithFlags.FlagsBuilder;
37 import org.opendaylight.yangtools.yang.model.spi.meta.SubstatementIndexingException;
38 import org.opendaylight.yangtools.yang.parser.api.YangParserConfiguration;
39 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.ArgumentUtils;
40 import org.opendaylight.yangtools.yang.parser.spi.SchemaTreeNamespace;
41 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
42 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
43 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
44 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.Prerequisite;
45 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
46 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
47 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
48 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
49 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
50 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
51 import org.opendaylight.yangtools.yang.parser.stmt.reactor.StatementContextBase;
53 abstract class AbstractAugmentStatementSupport
54 extends AbstractStatementSupport<SchemaNodeIdentifier, AugmentStatement, AugmentEffectiveStatement> {
55 private static final Pattern PATH_REL_PATTERN1 = Pattern.compile("\\.\\.?\\s*/(.+)");
56 private static final Pattern PATH_REL_PATTERN2 = Pattern.compile("//.*");
58 AbstractAugmentStatementSupport(final YangParserConfiguration config, final SubstatementValidator validator) {
59 super(YangStmtMapping.AUGMENT, StatementPolicy.copyDeclared(
60 (copy, current, substatements) ->
61 copy.getArgument().equals(current.getArgument())
62 && copy.moduleName().getModule().equals(current.moduleName().getModule())
63 && Objects.equals(copy.original(), current.original())
64 ), config, validator);
68 public final SchemaNodeIdentifier parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
69 SourceException.throwIf(PATH_REL_PATTERN1.matcher(value).matches()
70 || PATH_REL_PATTERN2.matcher(value).matches(), ctx,
71 "Augment argument \'%s\' is not valid, it can be only absolute path; or descendant if used in uses", value);
74 // https://tools.ietf.org/html/rfc6020#section-7.15
75 // https://tools.ietf.org/html/rfc7950#section-7.17
77 // The argument is either Absolute or Descendant based on whether the statement is declared within a 'uses'
78 // statement. The mechanics differs wildly between the two cases, so let's start by ensuring our argument
79 // is in the correct domain.
80 final SchemaNodeIdentifier result = ArgumentUtils.nodeIdentifierFromPath(ctx, value);
81 final StatementDefinition parent = ctx.coerceParentContext().publicDefinition();
82 if (parent == YangStmtMapping.USES) {
83 SourceException.throwIf(result instanceof Absolute, ctx,
84 "Absolute schema node identifier is not allowed when used within a uses statement");
86 SourceException.throwIf(result instanceof Descendant, ctx,
87 "Descendant schema node identifier is not allowed when used outside of a uses statement");
93 public final void onFullDefinitionDeclared(
94 final Mutable<SchemaNodeIdentifier, AugmentStatement, AugmentEffectiveStatement> augmentNode) {
95 if (!augmentNode.isSupportedByFeatures()) {
96 // We need this augment node to be present, but it should not escape to effective world
97 augmentNode.setUnsupported();
100 super.onFullDefinitionDeclared(augmentNode);
102 if (StmtContextUtils.isInExtensionBody(augmentNode)) {
106 final ModelActionBuilder augmentAction = augmentNode.newInferenceAction(ModelProcessingPhase.EFFECTIVE_MODEL);
107 augmentAction.requiresCtx(augmentNode, ModelProcessingPhase.EFFECTIVE_MODEL);
108 final Prerequisite<Mutable<?, ?, EffectiveStatement<?, ?>>> target = augmentAction.mutatesEffectiveCtxPath(
109 getSearchRoot(augmentNode), SchemaTreeNamespace.class, augmentNode.getArgument().getNodeIdentifiers());
111 augmentAction.apply(new AugmentInferenceAction(this, augmentNode, target));
115 protected final AugmentStatement createDeclared(final StmtContext<SchemaNodeIdentifier, AugmentStatement, ?> ctx,
116 final ImmutableList<? extends DeclaredStatement<?>> substatements) {
117 return DeclaredStatements.createAugment(ctx.getRawArgument(), ctx.getArgument(), substatements);
121 protected final AugmentStatement attachDeclarationReference(final AugmentStatement stmt,
122 final DeclarationReference reference) {
123 return DeclaredStatementDecorators.decorateAugment(stmt, reference);
127 protected final List<? extends StmtContext<?, ?, ?>> statementsToBuild(
128 final Current<SchemaNodeIdentifier, AugmentStatement> stmt,
129 final List<? extends StmtContext<?, ?, ?>> substatements) {
130 // Pick up the marker left by onFullDefinitionDeclared() inference action. If it is present we need to pass our
131 // children through target's implicit wrapping.
132 final StatementContextBase<?, ?, ?> implicitDef = stmt.getFromNamespace(AugmentImplicitHandlingNamespace.class,
134 return implicitDef == null ? substatements : Lists.transform(substatements, subCtx -> {
135 verify(subCtx instanceof StatementContextBase);
136 return implicitDef.wrapWithImplicit((StatementContextBase<?, ?, ?>) subCtx);
141 @SuppressFBWarnings(value = "BC_UNCONFIRMED_CAST", justification = "Cast of original(), should be always safe")
142 protected final AugmentEffectiveStatement createEffective(
143 final Current<SchemaNodeIdentifier, AugmentStatement> stmt,
144 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
145 final int flags = new FlagsBuilder()
146 .setStatus(findFirstArgument(substatements, StatusEffectiveStatement.class, Status.CURRENT))
150 return EffectiveStatements.createAugment(stmt.declared(), stmt.getArgument(), flags,
151 stmt.moduleName().getModule(), substatements, (AugmentationSchemaNode) stmt.original());
152 } catch (SubstatementIndexingException e) {
153 throw new SourceException(e.getMessage(), stmt, e);
157 abstract boolean allowsMandatory(StmtContext<?, ?, ?> ctx);
159 static StmtContext<?, ?, ?> getSearchRoot(final StmtContext<?, ?, ?> augmentContext) {
160 // Augment is in uses - we need to augment instantiated nodes in parent.
161 final StmtContext<?, ?, ?> parent = augmentContext.coerceParentContext();
162 if (YangStmtMapping.USES == parent.publicDefinition()) {
163 return parent.getParentContext();
168 static boolean hasWhenSubstatement(final StmtContext<?, ?, ?> ctx) {
169 return ctx.hasSubstatement(WhenEffectiveStatement.class);