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