2 * Copyright (c) 2015, 2016 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.stmt.reactor;
10 import static org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase.EFFECTIVE_MODEL;
11 import static org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase.FULL_DECLARATION;
12 import com.google.common.base.Function;
13 import com.google.common.base.Preconditions;
14 import java.util.HashSet;
15 import java.util.Iterator;
17 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
18 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
19 import org.opendaylight.yangtools.yang.model.api.meta.IdentifierNamespace;
20 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
21 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
22 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
23 import org.opendaylight.yangtools.yang.parser.spi.meta.StatementNamespace;
24 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
25 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
26 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
27 import org.opendaylight.yangtools.yang.parser.stmt.reactor.StatementContextBase.ContextMutation;
28 import org.opendaylight.yangtools.yang.parser.stmt.reactor.StatementContextBase.OnNamespaceItemAdded;
29 import org.opendaylight.yangtools.yang.parser.stmt.reactor.StatementContextBase.OnPhaseFinished;
31 class ModifierImpl implements ModelActionBuilder {
33 private final ModelProcessingPhase phase;
34 private final Set<AbstractPrerequisite<?>> unsatisfied = new HashSet<>();
35 private final Set<AbstractPrerequisite<?>> mutations = new HashSet<>();
37 private InferenceAction action;
38 private boolean actionApplied = false;
40 ModifierImpl(final ModelProcessingPhase phase) {
41 this.phase = Preconditions.checkNotNull(phase);
44 private <D> AbstractPrerequisite<D> addReq(final AbstractPrerequisite<D> prereq) {
45 unsatisfied.add(prereq);
49 private <T> AbstractPrerequisite<T> addMutation(final AbstractPrerequisite<T> mutation) {
50 mutations.add(mutation);
56 private void checkNotRegistered() {
57 Preconditions.checkState(action == null, "Action was already registered.");
60 private static IllegalStateException shouldNotHappenProbablyBug(final SourceException e) {
61 return new IllegalStateException("Source exception during registering prerequisite. This is probably bug.",e);
64 private boolean removeSatisfied() {
65 Iterator<AbstractPrerequisite<?>> prereq = unsatisfied.iterator();
66 boolean allSatisfied = true;
67 while (prereq.hasNext()) {
68 if (prereq.next().isDone()) {
69 // We are removing current prerequisite from list.
78 ModelProcessingPhase getPhase() {
89 action.prerequisiteFailed(unsatisfied);
93 private void applyAction() {
94 Preconditions.checkState(!actionApplied);
99 @SuppressWarnings({ "unchecked", "rawtypes" })
100 private <K, C extends StmtContext<?,?,?>, N extends StatementNamespace<K, ?, ?>> AbstractPrerequisite<C> requiresCtxImpl(final StmtContext<?, ?, ?> context, final Class<N> namespace, final K key,final ModelProcessingPhase phase) {
101 checkNotRegistered();
103 AddedToNamespace<C> addedToNs = new AddedToNamespace<>(phase);
105 contextImpl(context).onNamespaceItemAddedAction((Class) namespace,key,addedToNs);
107 } catch (SourceException e) {
108 throw shouldNotHappenProbablyBug(e);
112 private <C extends StmtContext<?, ?, ?>> AbstractPrerequisite<C> requiresCtxImpl(final C context, final ModelProcessingPhase phase) {
113 Preconditions.checkState(action == null, "Action was already registered.");
115 PhaseFinished<C> phaseFin = new PhaseFinished<>();
117 contextImpl(context).addPhaseCompletedListener(phase,phaseFin);
119 } catch (SourceException e) {
120 throw shouldNotHappenProbablyBug(e);
124 @SuppressWarnings({ "rawtypes", "unchecked" })
125 private <K, C extends StmtContext.Mutable<?, ?, ?> , N extends IdentifierNamespace<K, ? extends StmtContext<?, ?, ?>>> AbstractPrerequisite<C> mutatesCtxImpl(
126 final StmtContext<?, ?, ?> context, final Class<N> namespace, final K key, final ModelProcessingPhase phase) {
128 PhaseModificationInNamespace<C> mod = new PhaseModificationInNamespace<>(phase);
131 contextImpl(context).onNamespaceItemAddedAction((Class) namespace,key,mod);
133 } catch (SourceException e) {
134 throw shouldNotHappenProbablyBug(e);
138 private static StatementContextBase<?,?,?> contextImpl(final Object value) {
139 Preconditions.checkArgument(value instanceof StatementContextBase,"Supplied context was not provided by this reactor.");
140 return StatementContextBase.class.cast(value);
144 Preconditions.checkState(action != null, "Action was not defined yet.");
146 if (removeSatisfied()) {
154 public <C extends Mutable<?, ?, ?>, CT extends C> Prerequisite<C> mutatesCtx(final CT context, final ModelProcessingPhase phase) {
156 return addMutation(new PhaseMutation<>(contextImpl(context), phase));
157 } catch (InferenceException e) {
158 throw shouldNotHappenProbablyBug(e);
163 public <A,D extends DeclaredStatement<A>,E extends EffectiveStatement<A, D>> AbstractPrerequisite<StmtContext<A, D, E>> requiresCtx(final StmtContext<A, D, E> context, final ModelProcessingPhase phase) {
164 return requiresCtxImpl(context, phase);
169 public <K, N extends StatementNamespace<K, ?, ? >> Prerequisite<StmtContext<?,?,?>> requiresCtx(final StmtContext<?, ?, ?> context, final Class<N> namespace, final K key, final ModelProcessingPhase phase) {
170 return requiresCtxImpl(context, namespace, key, phase);
174 public <D extends DeclaredStatement<?>> Prerequisite<D> requiresDeclared(final StmtContext<?, ? extends D, ?> context) {
175 return requiresCtxImpl(context, FULL_DECLARATION).transform(StmtContext::buildDeclared);
179 public <K, D extends DeclaredStatement<?>, N extends StatementNamespace<K, ? extends D, ?>> AbstractPrerequisite<StmtContext<?, D, ?>> requiresDeclaredCtx(
180 final StmtContext<?, ?, ?> context, final Class<N> namespace, final K key) {
181 return requiresCtxImpl(context, namespace, key, FULL_DECLARATION);
185 public <K, D extends DeclaredStatement<?>, N extends StatementNamespace<K, ? extends D, ?>> Prerequisite<D> requiresDeclared(
186 final StmtContext<?, ?, ?> context, final Class<N> namespace, final K key) {
187 final AbstractPrerequisite<StmtContext<?,D,?>> rawContext = requiresCtxImpl(context, namespace, key, FULL_DECLARATION);
188 return rawContext.transform(StmtContext::buildDeclared);
192 public <E extends EffectiveStatement<?, ?>> Prerequisite<E> requiresEffective(final StmtContext<?, ?, ? extends E> stmt) {
193 return requiresCtxImpl(stmt, EFFECTIVE_MODEL).transform(StmtContext::buildEffective);
197 public <K, E extends EffectiveStatement<?, ?>, N extends StatementNamespace<K, ?, ? extends E>> AbstractPrerequisite<StmtContext<?, ?, E>> requiresEffectiveCtx(
198 final StmtContext<?, ?, ?> context, final Class<N> namespace, final K key) {
199 return requiresCtxImpl(contextImpl(context), namespace,key, EFFECTIVE_MODEL);
203 public <K, E extends EffectiveStatement<?, ?>, N extends StatementNamespace<K, ?, ? extends E>> Prerequisite<E> requiresEffective(
204 final StmtContext<?, ?, ?> context, final Class<N> namespace, final K key) {
205 final AbstractPrerequisite<StmtContext<?,?,E>> rawContext = requiresCtxImpl(context, namespace, key, EFFECTIVE_MODEL);
206 return rawContext.transform(StmtContext::buildEffective);
211 public <N extends IdentifierNamespace<?, ?>> Prerequisite<Mutable<?, ?, ?>> mutatesNs(final Mutable<?, ?, ?> context,
212 final Class<N> namespace) {
214 return addMutation(new NamespaceMutation<>(contextImpl(context), namespace));
215 } catch (SourceException e) {
216 throw shouldNotHappenProbablyBug(e);
221 public <T extends Mutable<?, ?, ?>> Prerequisite<T> mutatesEffectiveCtx(final T stmt) {
222 return mutatesCtx(stmt, EFFECTIVE_MODEL);
227 public <K, E extends EffectiveStatement<?, ?>, N extends IdentifierNamespace<K, ? extends StmtContext<?, ?, ?>>> AbstractPrerequisite<Mutable<?, ?, E>> mutatesEffectiveCtx(
228 final StmtContext<?, ?, ?> context, final Class<N> namespace, final K key) {
229 return mutatesCtxImpl(context, namespace, key, EFFECTIVE_MODEL);
235 public void apply(final InferenceAction action) {
236 this.action = Preconditions.checkNotNull(action);
239 private abstract class AbstractPrerequisite<T> implements Prerequisite<T> {
242 private boolean done = false;
246 Preconditions.checkState(isDone());
251 public boolean isDone() {
255 protected boolean resolvePrereq(final T value) {
261 protected <O> Prerequisite<O> transform(final Function<? super T,O> transformation) {
263 return new Prerequisite<O>() {
267 return transformation.apply(AbstractPrerequisite.this.get());
271 public boolean isDone() {
272 return AbstractPrerequisite.this.isDone();
280 private class PhaseMutation<C> extends AbstractPrerequisite<C> implements ContextMutation {
282 @SuppressWarnings("unchecked")
283 public PhaseMutation(final StatementContextBase<?, ?, ?> context, final ModelProcessingPhase phase) {
284 context.addMutation(phase, this);
285 resolvePrereq((C) context);
289 public boolean isFinished() {
295 private class PhaseFinished<C extends StmtContext<?, ?, ?>> extends AbstractPrerequisite<C> implements OnPhaseFinished {
297 @SuppressWarnings("unchecked")
299 public boolean phaseFinished(final StatementContextBase<?, ?, ?> context, final ModelProcessingPhase phase) {
300 return resolvePrereq((C) (context));
304 private class NamespaceMutation<N extends IdentifierNamespace<?,?>> extends AbstractPrerequisite<StmtContext.Mutable<?, ?, ?>> {
306 public NamespaceMutation(final StatementContextBase<?, ?, ?> ctx, final Class<N> namespace) {
312 private class AddedToNamespace<C extends StmtContext<?,?,?>> extends AbstractPrerequisite<C> implements OnNamespaceItemAdded,OnPhaseFinished {
314 private final ModelProcessingPhase phase;
316 public <K, N extends StatementNamespace<K, ?, ?>> AddedToNamespace(final ModelProcessingPhase phase) {
321 public void namespaceItemAdded(final StatementContextBase<?, ?, ?> context, final Class<?> namespace, final Object key,
322 final Object value) {
323 StatementContextBase<?, ?, ?> targetContext = (StatementContextBase<?, ?, ?>) value;
324 targetContext.addPhaseCompletedListener(phase, this);
327 @SuppressWarnings("unchecked")
329 public boolean phaseFinished(final StatementContextBase<?, ?, ?> context, final ModelProcessingPhase phase) {
330 return resolvePrereq((C) context);
335 private class PhaseModificationInNamespace<C extends Mutable<?,?,?>> extends AbstractPrerequisite<C> implements OnNamespaceItemAdded, ContextMutation {
337 private final ModelProcessingPhase modPhase;
339 public <K, N extends StatementNamespace<K, ?, ?>> PhaseModificationInNamespace(final ModelProcessingPhase phase) {
340 Preconditions.checkArgument(phase != null, "Model processing phase must not be null");
341 this.modPhase = phase;
344 @SuppressWarnings("unchecked")
346 public void namespaceItemAdded(final StatementContextBase<?, ?, ?> context, final Class<?> namespace, final Object key,
347 final Object value) {
348 StatementContextBase<?, ?, ?> targetCtx = contextImpl(value);
349 targetCtx.addMutation(modPhase,this);
350 resolvePrereq((C) targetCtx);
354 public boolean isFinished() {