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/*
* SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
package tools.refinery.language.resource;
import com.google.common.collect.ImmutableMap;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.xtext.EcoreUtil2;
import org.eclipse.xtext.naming.IQualifiedNameConverter;
import org.eclipse.xtext.naming.QualifiedName;
import org.eclipse.xtext.resource.EObjectDescription;
import org.eclipse.xtext.resource.IEObjectDescription;
import org.eclipse.xtext.resource.impl.DefaultResourceDescriptionStrategy;
import org.eclipse.xtext.util.IAcceptor;
import tools.refinery.language.model.problem.*;
import tools.refinery.language.naming.NamingUtil;
import tools.refinery.language.utils.ProblemUtil;
import java.util.Map;
@Singleton
public class ProblemResourceDescriptionStrategy extends DefaultResourceDescriptionStrategy {
public static final String ERROR_PREDICATE = "tools.refinery.language.resource" +
".ProblemResourceDescriptionStrategy.ERROR_PREDICATE";
public static final String ERROR_PREDICATE_TRUE = "true";
@Inject
private IQualifiedNameConverter qualifiedNameConverter;
@Override
public boolean createEObjectDescriptions(EObject eObject, IAcceptor<IEObjectDescription> acceptor) {
if (!shouldExport(eObject)) {
return false;
}
var qualifiedName = getNameAsQualifiedName(eObject);
if (qualifiedName == null) {
return true;
}
var problem = EcoreUtil2.getContainerOfType(eObject, Problem.class);
var problemQualifiedName = getNameAsQualifiedName(problem);
var userData = getUserData(eObject);
boolean nameExported;
if (shouldExportSimpleName(eObject)) {
acceptEObjectDescription(eObject, problemQualifiedName, qualifiedName, userData, acceptor);
nameExported = true;
} else {
nameExported = false;
}
var parent = eObject.eContainer();
while (parent != null && parent != problem) {
var parentQualifiedName = getNameAsQualifiedName(parent);
if (parentQualifiedName == null) {
parent = parent.eContainer();
continue;
}
qualifiedName = parentQualifiedName.append(qualifiedName);
if (shouldExportSimpleName(parent)) {
acceptEObjectDescription(eObject, problemQualifiedName, qualifiedName, userData, acceptor);
nameExported = true;
} else {
nameExported = false;
}
parent = parent.eContainer();
}
if (!nameExported) {
acceptEObjectDescription(eObject, problemQualifiedName, qualifiedName, userData, acceptor);
}
return true;
}
protected QualifiedName getNameAsQualifiedName(EObject eObject) {
if (!(eObject instanceof NamedElement namedElement)) {
return null;
}
var name = namedElement.getName();
if (NamingUtil.isNullOrEmpty(name)) {
return null;
}
return qualifiedNameConverter.toQualifiedName(name);
}
protected boolean shouldExport(EObject eObject) {
if (eObject instanceof Variable) {
// Variables are always private to the containing predicate definition.
return false;
}
if (eObject instanceof Node node) {
// Only enum literals and new nodes are visible across problem files.
return ProblemUtil.isIndividualNode(node) || ProblemUtil.isNewNode(node);
}
return true;
}
protected Map<String, String> getUserData(EObject eObject) {
var builder = ImmutableMap.<String, String>builder();
if (eObject instanceof PredicateDefinition predicateDefinition && predicateDefinition.isError()) {
builder.put(ERROR_PREDICATE, ERROR_PREDICATE_TRUE);
}
return builder.build();
}
protected boolean shouldExportSimpleName(EObject eObject) {
if (eObject instanceof Node node) {
return !ProblemUtil.isNewNode(node);
}
if (eObject instanceof PredicateDefinition predicateDefinition) {
return !ProblemUtil.isInvalidMultiplicityConstraint(predicateDefinition);
}
return true;
}
private void acceptEObjectDescription(EObject eObject, QualifiedName prefix, QualifiedName qualifiedName,
Map<String, String> userData, IAcceptor<IEObjectDescription> acceptor) {
var qualifiedNameWithPrefix = prefix == null ? qualifiedName : prefix.append(qualifiedName);
var description = EObjectDescription.create(qualifiedNameWithPrefix, eObject, userData);
acceptor.accept(description);
}
}
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