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 java.util.List;
13 import java.util.regex.Pattern;
14 import org.opendaylight.yangtools.yang.common.Empty;
15 import org.opendaylight.yangtools.yang.model.api.Status;
16 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
17 import org.opendaylight.yangtools.yang.model.api.meta.DeclarationReference;
18 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
19 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
20 import org.opendaylight.yangtools.yang.model.api.meta.StatementDefinition;
21 import org.opendaylight.yangtools.yang.model.api.stmt.AugmentEffectiveStatement;
22 import org.opendaylight.yangtools.yang.model.api.stmt.AugmentStatement;
23 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier;
24 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Absolute;
25 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Descendant;
26 import org.opendaylight.yangtools.yang.model.api.stmt.StatusEffectiveStatement;
27 import org.opendaylight.yangtools.yang.model.api.stmt.WhenEffectiveStatement;
28 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatementDecorators;
29 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatements;
30 import org.opendaylight.yangtools.yang.model.ri.stmt.EffectiveStatements;
31 import org.opendaylight.yangtools.yang.model.spi.meta.EffectiveStatementMixins.EffectiveStatementWithFlags.FlagsBuilder;
32 import org.opendaylight.yangtools.yang.model.spi.meta.SubstatementIndexingException;
33 import org.opendaylight.yangtools.yang.parser.api.YangParserConfiguration;
34 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.ArgumentUtils;
35 import org.opendaylight.yangtools.yang.parser.spi.SchemaTreeNamespace;
36 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
37 import org.opendaylight.yangtools.yang.parser.spi.meta.BoundStmtCtx;
38 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
39 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
40 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.Prerequisite;
41 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
42 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
43 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
44 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
45 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
46 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
48 abstract class AbstractAugmentStatementSupport
49 extends AbstractStatementSupport<SchemaNodeIdentifier, AugmentStatement, AugmentEffectiveStatement> {
50 private static final Pattern PATH_REL_PATTERN1 = Pattern.compile("\\.\\.?\\s*/(.+)");
51 private static final Pattern PATH_REL_PATTERN2 = Pattern.compile("//.*");
53 AbstractAugmentStatementSupport(final YangParserConfiguration config, final SubstatementValidator validator) {
54 super(YangStmtMapping.AUGMENT, StatementPolicy.copyDeclared(
55 (copy, current, substatements) ->
56 copy.getArgument().equals(current.getArgument())
57 && copy.moduleName().getModule().equals(current.moduleName().getModule())
58 ), config, validator);
62 public final SchemaNodeIdentifier parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
63 SourceException.throwIf(PATH_REL_PATTERN1.matcher(value).matches()
64 || PATH_REL_PATTERN2.matcher(value).matches(), ctx,
65 "Augment argument \'%s\' is not valid, it can be only absolute path; or descendant if used in uses", value);
68 // https://tools.ietf.org/html/rfc6020#section-7.15
69 // https://tools.ietf.org/html/rfc7950#section-7.17
71 // The argument is either Absolute or Descendant based on whether the statement is declared within a 'uses'
72 // statement. The mechanics differs wildly between the two cases, so let's start by ensuring our argument
73 // is in the correct domain.
74 final SchemaNodeIdentifier result = ArgumentUtils.nodeIdentifierFromPath(ctx, value);
75 final StatementDefinition parent = ctx.coerceParentContext().publicDefinition();
76 if (parent == YangStmtMapping.USES) {
77 SourceException.throwIf(result instanceof Absolute, ctx,
78 "Absolute schema node identifier is not allowed when used within a uses statement");
80 SourceException.throwIf(result instanceof Descendant, ctx,
81 "Descendant schema node identifier is not allowed when used outside of a uses statement");
87 public final void onFullDefinitionDeclared(
88 final Mutable<SchemaNodeIdentifier, AugmentStatement, AugmentEffectiveStatement> augmentNode) {
89 if (!augmentNode.isSupportedByFeatures()) {
90 // We need this augment node to be present, but it should not escape to effective world
91 augmentNode.setUnsupported();
94 super.onFullDefinitionDeclared(augmentNode);
96 if (StmtContextUtils.isInExtensionBody(augmentNode)) {
100 final ModelActionBuilder augmentAction = augmentNode.newInferenceAction(ModelProcessingPhase.EFFECTIVE_MODEL);
101 augmentAction.requiresCtx(augmentNode, ModelProcessingPhase.EFFECTIVE_MODEL);
102 final Prerequisite<Mutable<?, ?, EffectiveStatement<?, ?>>> target = augmentAction.mutatesEffectiveCtxPath(
103 getSearchRoot(augmentNode), SchemaTreeNamespace.class, augmentNode.getArgument().getNodeIdentifiers());
105 augmentAction.apply(new AugmentInferenceAction(this, augmentNode, target));
109 protected final AugmentStatement createDeclared(final BoundStmtCtx<SchemaNodeIdentifier> ctx,
110 final ImmutableList<DeclaredStatement<?>> substatements) {
111 return DeclaredStatements.createAugment(ctx.getRawArgument(), ctx.getArgument(), substatements);
115 protected final AugmentStatement attachDeclarationReference(final AugmentStatement stmt,
116 final DeclarationReference reference) {
117 return DeclaredStatementDecorators.decorateAugment(stmt, reference);
121 protected final List<? extends StmtContext<?, ?, ?>> statementsToBuild(
122 final Current<SchemaNodeIdentifier, AugmentStatement> stmt,
123 final List<? extends StmtContext<?, ?, ?>> substatements) {
124 // Pick up the marker left by onFullDefinitionDeclared() inference action. If it is present we need to pass our
125 // children through target's implicit wrapping.
126 final var implicitDef = stmt.getFromNamespace(AugmentImplicitHandlingNamespace.class, Empty.value());
127 return implicitDef == null ? substatements
128 : Lists.transform(substatements, subCtx -> implicitDef.wrapWithImplicit(subCtx));
132 protected final AugmentEffectiveStatement createEffective(
133 final Current<SchemaNodeIdentifier, AugmentStatement> stmt,
134 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
135 final int flags = new FlagsBuilder()
136 .setStatus(findFirstArgument(substatements, StatusEffectiveStatement.class, Status.CURRENT))
140 return EffectiveStatements.createAugment(stmt.declared(), stmt.getArgument(), flags,
141 stmt.moduleName().getModule(), substatements);
142 } catch (SubstatementIndexingException e) {
143 throw new SourceException(e.getMessage(), stmt, e);
147 abstract boolean allowsMandatory(StmtContext<?, ?, ?> ctx);
149 static StmtContext<?, ?, ?> getSearchRoot(final StmtContext<?, ?, ?> augmentContext) {
150 // Augment is in uses - we need to augment instantiated nodes in parent.
151 final StmtContext<?, ?, ?> parent = augmentContext.coerceParentContext();
152 if (YangStmtMapping.USES == parent.publicDefinition()) {
153 return parent.getParentContext();
158 static boolean hasWhenSubstatement(final StmtContext<?, ?, ?> ctx) {
159 return ctx.hasSubstatement(WhenEffectiveStatement.class);