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.stmt.reactor;
10 import static org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase.EffectiveModel;
11 import static org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase.FullDeclaration;
13 import com.google.common.base.Function;
14 import com.google.common.base.Preconditions;
15 import java.util.HashSet;
16 import java.util.Iterator;
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.IdentifierNamespace;
21 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
22 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
23 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
24 import org.opendaylight.yangtools.yang.parser.spi.meta.StatementNamespace;
25 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
26 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
27 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
28 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
29 import org.opendaylight.yangtools.yang.parser.stmt.reactor.StatementContextBase.ContextMutation;
30 import org.opendaylight.yangtools.yang.parser.stmt.reactor.StatementContextBase.OnNamespaceItemAdded;
31 import org.opendaylight.yangtools.yang.parser.stmt.reactor.StatementContextBase.OnPhaseFinished;
33 class ModifierImpl implements ModelActionBuilder {
35 private final ModelProcessingPhase phase;
36 private final Set<AbstractPrerequisite<?>> unsatisfied = new HashSet<>();
37 private final Set<AbstractPrerequisite<?>> mutations = new HashSet<>();
39 private InferenceAction action;
40 private boolean actionApplied = false;
42 ModifierImpl(ModelProcessingPhase phase) {
43 this.phase = Preconditions.checkNotNull(phase);
46 private <D> AbstractPrerequisite<D> addReq(AbstractPrerequisite<D> prereq) {
47 unsatisfied.add(prereq);
51 private <T> AbstractPrerequisite<T> addMutation(AbstractPrerequisite<T> mutation) {
52 mutations.add(mutation);
58 private void checkNotRegistered() {
59 Preconditions.checkState(action == null, "Action was already registered.");
62 private IllegalStateException shouldNotHappenProbablyBug(SourceException e) {
63 return new IllegalStateException("Source exception during registering prerequisite. This is probably bug.",e);
66 private void tryToResolve() throws InferenceException {
68 return; // Action was not yet defined
70 if(removeSatisfied()) {
75 private boolean removeSatisfied() {
76 Iterator<AbstractPrerequisite<?>> prereq = unsatisfied.iterator();
77 boolean allSatisfied = true;
78 while(prereq.hasNext()) {
79 if(prereq.next().isDone()) {
80 prereq.remove(); // We are removing current prerequisite from list.
88 ModelProcessingPhase getPhase() {
97 void failModifier() throws InferenceException {
99 action.prerequisiteFailed(unsatisfied);
103 private void applyAction() throws InferenceException {
106 // Mark all mutations as performed, so context node could move to next.
107 actionApplied = true;
110 @SuppressWarnings({ "unchecked", "rawtypes" })
111 private <K, C extends StmtContext<?,?,?>, N extends StatementNamespace<K, ?, ?>> AbstractPrerequisite<C> requiresCtxImpl(StmtContext<?, ?, ?> context, Class<N> namespace, K key,ModelProcessingPhase phase) {
112 checkNotRegistered();
114 AddedToNamespace<C> addedToNs = new AddedToNamespace<C>(phase);
116 contextImpl(context).onNamespaceItemAddedAction((Class) namespace,key,addedToNs);
118 } catch (SourceException e) {
119 throw shouldNotHappenProbablyBug(e);
123 private <C extends StmtContext<?, ?, ?>> AbstractPrerequisite<C> requiresCtxImpl(C context, ModelProcessingPhase phase) {
124 Preconditions.checkState(action == null, "Action was already registered.");
126 PhaseFinished<C> phaseFin = new PhaseFinished<C>();
128 contextImpl(context).addPhaseCompletedListener(FullDeclaration,phaseFin);
130 } catch (SourceException e) {
131 throw shouldNotHappenProbablyBug(e);
135 @SuppressWarnings({ "rawtypes", "unchecked" })
136 private <K, C extends StmtContext.Mutable<?, ?, ?> , N extends StatementNamespace<K, ?, ? >> AbstractPrerequisite<C> mutatesCtxImpl(
137 StmtContext<?, ?, ?> context, Class<N> namespace, K key, ModelProcessingPhase phase) {
139 PhaseModificationInNamespace<C> mod = new PhaseModificationInNamespace<C>(phase);
141 contextImpl(context).onNamespaceItemAddedAction((Class) namespace,key,mod);
143 } catch (SourceException e) {
144 throw shouldNotHappenProbablyBug(e);
148 private static StatementContextBase<?,?,?> contextImpl(StmtContext<?,?,?> context) {
149 Preconditions.checkArgument(context instanceof StatementContextBase,"Supplied context was not provided by this reactor.");
150 return StatementContextBase.class.cast(context);
154 public <C extends Mutable<?, ?, ?>, CT extends C> Prerequisite<C> mutatesCtx(CT context, ModelProcessingPhase phase) {
156 return addMutation(new PhaseMutation<C>(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(StmtContext<A, D, E> context, ModelProcessingPhase phase) {
164 return requiresCtxImpl(context, phase);
169 public <K, N extends StatementNamespace<K, ?, ? >> Prerequisite<StmtContext<?,?,?>> requiresCtx(StmtContext<?, ?, ?> context, Class<N> namespace, K key, ModelProcessingPhase phase) {
170 return requiresCtxImpl(context, namespace, key, phase);
174 public <D extends DeclaredStatement<?>> Prerequisite<D> requiresDeclared(StmtContext<?, ? extends D, ?> context) {
175 return requiresCtxImpl(context,FullDeclaration).transform(StmtContextUtils.<D>buildDeclared());
179 public <K, D extends DeclaredStatement<?>, N extends StatementNamespace<K, ? extends D, ?>> AbstractPrerequisite<StmtContext<?, D, ?>> requiresDeclaredCtx(
180 StmtContext<?, ?, ?> context, Class<N> namespace, K key) {
181 return requiresCtxImpl(context, namespace, key,FullDeclaration);
185 public <K, D extends DeclaredStatement<?>, N extends StatementNamespace<K, ? extends D, ?>> Prerequisite<D> requiresDeclared(
186 StmtContext<?, ?, ?> context, Class<N> namespace, K key) {
187 final AbstractPrerequisite<StmtContext<?,D,?>> rawContext = requiresCtxImpl(context, namespace, key,FullDeclaration);
188 return rawContext.transform(StmtContextUtils.<D>buildDeclared());
192 public <E extends EffectiveStatement<?, ?>> Prerequisite<E> requiresEffective(StmtContext<?, ?, ? extends E> stmt) {
193 return requiresCtxImpl(stmt,EffectiveModel).transform(StmtContextUtils.<E>buildEffective());
197 public <K, E extends EffectiveStatement<?, ?>, N extends StatementNamespace<K, ?, ? extends E>> AbstractPrerequisite<StmtContext<?, ?, E>> requiresEffectiveCtx(
198 StmtContext<?, ?, ?> context, Class<N> namespace, K key) {
199 return requiresCtxImpl(contextImpl(context),namespace,key,EffectiveModel);
203 public <K, E extends EffectiveStatement<?, ?>, N extends StatementNamespace<K, ?, ? extends E>> Prerequisite<E> requiresEffective(
204 StmtContext<?, ?, ?> context, Class<N> namespace, K key) {
205 final AbstractPrerequisite<StmtContext<?,?,E>> rawContext = requiresCtxImpl(context, namespace, key,EffectiveModel);
206 return rawContext.transform(StmtContextUtils.<E>buildEffective());
211 public <N extends IdentifierNamespace<?, ?>> Prerequisite<Mutable<?, ?, ?>> mutatesNs(Mutable<?, ?, ?> context,
212 Class<N> namespace) {
214 return addMutation(new NamespaceMutation<N>(contextImpl(context),namespace));
215 } catch (SourceException e) {
216 throw shouldNotHappenProbablyBug(e);
221 public <T extends Mutable<?, ?, ?>> Prerequisite<T> mutatesEffectiveCtx(T stmt) {
222 return mutatesCtx(stmt, EffectiveModel);
227 public <K, E extends EffectiveStatement<?, ?>, N extends StatementNamespace<K, ?, ? extends E>> AbstractPrerequisite<Mutable<?, ?, E>> mutatesEffectiveCtx(
228 StmtContext<?, ?, ?> context, Class<N> namespace, K key) {
229 return mutatesCtxImpl(context, namespace, key, EffectiveModel);
235 public void apply(InferenceAction action) throws InferenceException {
236 this.action = Preconditions.checkNotNull(action);
240 private abstract class AbstractPrerequisite<T> implements Prerequisite<T> {
243 private boolean done = false;
247 Preconditions.checkState(isDone());
252 public boolean isDone() {
256 protected void resolvePrereq(T value) throws InferenceException {
257 Preconditions.checkState(!isDone());
263 protected <O> Prerequisite<O> transform(final Function<? super T,O> transformation) {
265 return new Prerequisite<O>() {
269 return transformation.apply(AbstractPrerequisite.this.get());
273 public boolean isDone() {
274 return AbstractPrerequisite.this.isDone();
282 private class PhaseMutation<C> extends AbstractPrerequisite<C> implements ContextMutation {
284 @SuppressWarnings("unchecked")
285 public PhaseMutation(StatementContextBase<?, ?, ?> context, ModelProcessingPhase phase) throws InferenceException {
286 context.addMutation(phase, this);
287 resolvePrereq((C) context);
291 public boolean isFinished() {
297 private class PhaseFinished<C extends StmtContext<?, ?, ?>> extends AbstractPrerequisite<C> implements OnPhaseFinished {
299 @SuppressWarnings("unchecked")
301 public void phaseFinished(StatementContextBase<?, ?, ?> context, ModelProcessingPhase phase) throws SourceException {
302 resolvePrereq((C) (context));
306 private class NamespaceMutation<N extends IdentifierNamespace<?,?>> extends AbstractPrerequisite<StmtContext.Mutable<?, ?, ?>> {
308 public NamespaceMutation(StatementContextBase<?, ?, ?> ctx, Class<N> namespace) throws InferenceException {
314 private class AddedToNamespace<C extends StmtContext<?,?,?>> extends AbstractPrerequisite<C> implements OnNamespaceItemAdded,OnPhaseFinished {
316 private final ModelProcessingPhase phase;
318 public <K, N extends StatementNamespace<K, ?, ?>> AddedToNamespace(ModelProcessingPhase phase) {
323 public void namespaceItemAdded(StatementContextBase<?, ?, ?> context, Class<?> namespace, Object key,
324 Object value) throws SourceException {
325 StatementContextBase<?, ?, ?> targetContext = (StatementContextBase<?, ?, ?>) value;
326 targetContext.addPhaseCompletedListener(phase, this);
329 @SuppressWarnings("unchecked")
331 public void phaseFinished(StatementContextBase<?, ?, ?> context, ModelProcessingPhase phase) throws SourceException {
332 resolvePrereq((C) context);
337 private class PhaseModificationInNamespace<C extends Mutable<?,?,?>> extends AbstractPrerequisite<C> implements OnNamespaceItemAdded, ContextMutation {
339 private final ModelProcessingPhase modPhase;
341 public <K, N extends StatementNamespace<K, ?, ?>> PhaseModificationInNamespace(ModelProcessingPhase phase) throws SourceException {
342 Preconditions.checkArgument(phase != null, "Model processing phase must not be null");
343 this.modPhase = phase;
346 @SuppressWarnings("unchecked")
348 public void namespaceItemAdded(StatementContextBase<?, ?, ?> context, Class<?> namespace, Object key,
349 Object value) throws SourceException {
350 context.addMutation(modPhase,this);
351 resolvePrereq((C) context);
355 public boolean isFinished() {