/*
* Copyright 2003-2015 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jetbrains.mps.persistence.binary;
import jetbrains.mps.smodel.InterfaceSNode;
import jetbrains.mps.util.io.ModelInputStream;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.mps.openapi.language.SConcept;
import org.jetbrains.mps.openapi.language.SContainmentLink;
import org.jetbrains.mps.openapi.language.SProperty;
import org.jetbrains.mps.openapi.language.SReferenceLink;
import org.jetbrains.mps.openapi.model.SModelReference;
import org.jetbrains.mps.openapi.model.SNode;
import org.jetbrains.mps.openapi.model.SNodeId;
import java.io.IOException;
import java.util.Collection;
public final class NodesReader extends BareNodeReader {
private final ReadHelper myReadHelper;
private boolean hasSkippedNodes = false;
private Collection<SNodeId> myExternalRefs;
private Collection<SNodeId> myLocalRefs;
public NodesReader(@NotNull SModelReference modelReference, @NotNull ModelInputStream is, ReadHelper readHelper) {
super(modelReference, is);
myReadHelper = readHelper;
}
/*package*/ void collectExternalTargets(@Nullable Collection<SNodeId> store) {
myExternalRefs = store;
}
/*package*/ void collectLocalTargets(@Nullable Collection<SNodeId> store) {
myLocalRefs = store;
}
public boolean hasSkippedNodes() {
return hasSkippedNodes;
}
@Override
protected SNode instantiate(@Nullable SNode parent) throws IOException {
SConcept concept = myReadHelper.readConcept(myIn.readShort());
SNodeId nodeId = myIn.readNodeId();
SContainmentLink link = myReadHelper.readAggregation(myIn.readShort());
boolean interfaceNode = false;
if (myReadHelper.isRequestedInterfaceOnly()) {
interfaceNode = myReadHelper.isInterface(concept) || link == null;
}
// TODO report if (nodeInfo != 0 && myEnv != null) .. myEnv.nodeRoleRead/conceptRead();
jetbrains.mps.smodel.SNode node = interfaceNode ? new InterfaceSNode(concept, nodeId) : new jetbrains.mps.smodel.SNode(concept, nodeId);
if (parent == null) {
return node;
}
if (!(parent instanceof InterfaceSNode) || node instanceof InterfaceSNode) {
parent.addChild(link, node);
} else {
((InterfaceSNode) parent).skipRole(link);
hasSkippedNodes = true;
}
return node;
}
@Override
protected void localNodeReferenceRead(SNodeId nodeId) {
if (nodeId != null && myLocalRefs != null) {
myLocalRefs.add(nodeId);
}
}
@Override
protected void externalNodeReferenceRead(SModelReference targetModel, SNodeId targetNodeId) {
if (targetNodeId != null && myExternalRefs != null) {
myExternalRefs.add(targetNodeId);
}
}
@Override
protected void readReferences(SNode node) throws IOException {
int refs = myIn.readShort();
while (refs-- > 0) {
final SReferenceLink link = myReadHelper.readAssociation(myIn.readShort());
readReference(link, node);
}
}
@Override
protected void readProperties(SNode node) throws IOException {
int properties = myIn.readShort();
while (properties-- > 0) {
final SProperty property = myReadHelper.readProperty(myIn.readShort());
final String value = myIn.readString();
node.setProperty(property, value);
}
}
}