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package tools.refinery.language.model;
import java.util.ArrayDeque;
import java.util.Collection;
import java.util.Deque;
import java.util.HashSet;
import java.util.Optional;
import java.util.Set;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import tools.refinery.language.model.problem.ClassDeclaration;
import tools.refinery.language.model.problem.ImplicitVariable;
import tools.refinery.language.model.problem.Node;
import tools.refinery.language.model.problem.Problem;
import tools.refinery.language.model.problem.ProblemPackage;
import tools.refinery.language.model.problem.ReferenceDeclaration;
import tools.refinery.language.model.problem.Relation;
import tools.refinery.language.model.problem.Variable;
public final class ProblemUtil {
public static final String BUILTIN_LIBRARY_NAME = "builtin";
public static final URI BUILTIN_LIBRARY_URI = getLibraryUri(BUILTIN_LIBRARY_NAME);
public static final String NODE_CLASS_NAME = "node";
private ProblemUtil() {
throw new IllegalStateException("This is a static utility class and should not be instantiated directly");
}
public static boolean isSingletonVariable(Variable variable) {
return variable.eContainingFeature() == ProblemPackage.Literals.VARIABLE_OR_NODE_ARGUMENT__SINGLETON_VARIABLE;
}
public static boolean isImplicitVariable(Variable variable) {
return variable instanceof ImplicitVariable;
}
public static boolean isImplicitNode(Node node) {
return node.eContainingFeature() == ProblemPackage.Literals.PROBLEM__NODES;
}
public static boolean isImplicit(EObject eObject) {
if (eObject instanceof Node node) {
return isImplicitNode(node);
} else if (eObject instanceof Variable variable) {
return isImplicitVariable(variable);
} else {
return false;
}
}
public static boolean isIndividualNode(Node node) {
var containingFeature = node.eContainingFeature();
return containingFeature == ProblemPackage.Literals.INDIVIDUAL_DECLARATION__NODES
|| containingFeature == ProblemPackage.Literals.ENUM_DECLARATION__LITERALS;
}
public static boolean isNewNode(Node node) {
return node.eContainingFeature() == ProblemPackage.Literals.CLASS_DECLARATION__NEW_NODE;
}
public static Optional<Problem> getBuiltInLibrary(EObject context) {
return Optional.ofNullable(context.eResource()).map(Resource::getResourceSet)
.map(resourceSet -> resourceSet.getResource(BUILTIN_LIBRARY_URI, true)).map(Resource::getContents)
.filter(contents -> !contents.isEmpty()).map(contents -> contents.get(0))
.filter(Problem.class::isInstance).map(Problem.class::cast);
}
public static boolean isBuiltIn(EObject eObject) {
if (eObject != null) {
var eResource = eObject.eResource();
if (eResource != null) {
return BUILTIN_LIBRARY_URI.equals(eResource.getURI());
}
}
return false;
}
public static Optional<ClassDeclaration> getNodeClassDeclaration(EObject context) {
return getBuiltInLibrary(context).flatMap(problem -> problem.getStatements().stream()
.filter(ClassDeclaration.class::isInstance).map(ClassDeclaration.class::cast)
.filter(declaration -> NODE_CLASS_NAME.equals(declaration.getName())).findFirst());
}
public static Collection<ClassDeclaration> getSuperclassesAndSelf(ClassDeclaration classDeclaration) {
Set<ClassDeclaration> found = new HashSet<>();
getNodeClassDeclaration(classDeclaration).ifPresent(found::add);
Deque<ClassDeclaration> queue = new ArrayDeque<>();
queue.addLast(classDeclaration);
while (!queue.isEmpty()) {
ClassDeclaration current = queue.removeFirst();
if (!found.contains(current)) {
found.add(current);
for (Relation superType : current.getSuperTypes()) {
if (superType instanceof ClassDeclaration superDeclaration) {
queue.addLast(superDeclaration);
}
}
}
}
return found;
}
public static Collection<ReferenceDeclaration> getAllReferenceDeclarations(ClassDeclaration classDeclaration) {
Set<ReferenceDeclaration> referenceDeclarations = new HashSet<>();
for (ClassDeclaration superclass : getSuperclassesAndSelf(classDeclaration)) {
referenceDeclarations.addAll(superclass.getReferenceDeclarations());
}
return referenceDeclarations;
}
private static URI getLibraryUri(String libraryName) {
return URI.createURI(ProblemUtil.class.getClassLoader()
.getResource("model/" + libraryName + "." + ProblemEMFSetup.XMI_RESOURCE_EXTENSION)
.toString());
}
}
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