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package org.eclipse.viatra.solver.language.ide.syntaxcoloring;
import java.util.List;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.viatra.solver.language.ProblemUtil;
import org.eclipse.viatra.solver.language.model.problem.ClassDeclaration;
import org.eclipse.viatra.solver.language.model.problem.EnumDeclaration;
import org.eclipse.viatra.solver.language.model.problem.NamedElement;
import org.eclipse.viatra.solver.language.model.problem.Node;
import org.eclipse.viatra.solver.language.model.problem.Parameter;
import org.eclipse.viatra.solver.language.model.problem.PredicateDefinition;
import org.eclipse.viatra.solver.language.model.problem.ProblemPackage;
import org.eclipse.viatra.solver.language.model.problem.ReferenceDeclaration;
import org.eclipse.viatra.solver.language.model.problem.Variable;
import org.eclipse.xtext.ide.editor.syntaxcoloring.DefaultSemanticHighlightingCalculator;
import org.eclipse.xtext.ide.editor.syntaxcoloring.IHighlightedPositionAcceptor;
import org.eclipse.xtext.nodemodel.INode;
import org.eclipse.xtext.nodemodel.util.NodeModelUtils;
import org.eclipse.xtext.service.OperationCanceledManager;
import org.eclipse.xtext.util.CancelIndicator;
import com.google.common.collect.ImmutableList;
import com.google.inject.Inject;
public class ProblemSemanticHighlightingCalculator extends DefaultSemanticHighlightingCalculator {
private static final String BUILTIN_CLASS = "cm-keyword";
private static final String CLASS_CLASS = "problem-class";
private static final String ABSTRACT_CLASS = "problem-abstract";
private static final String ENUM_CLASS = "problem-enum";
private static final String REFERENCE_CLASS = "problem-reference";
private static final String CONTAINMENT_CLASS = "problem-containment";
private static final String PREDICATE_CLASS = "problem-predicate";
private static final String ERROR_CLASS = "problem-error";
private static final String NODE_CLASS = "problem-node";
private static final String UNIQUE_NODE_CLASS = "problem-unique-node";
private static final String NEW_NODE_CLASS = "problem-new-node";
private static final String PARAMETER_CLASS = "problem-parameter";
private static final String VARIABLE_CLASS = "problem-variable";
private static final String SINGLETON_VARIABLE_CLASS = "problem-singleton-variable";
@Inject
private OperationCanceledManager operationCanceledManager;
@Override
protected boolean highlightElement(EObject object, IHighlightedPositionAcceptor acceptor,
CancelIndicator cancelIndicator) {
highlightName(object, acceptor);
highlightCrossReferences(object, acceptor, cancelIndicator);
return false;
}
protected void highlightName(EObject object, IHighlightedPositionAcceptor acceptor) {
if (!(object instanceof NamedElement)) {
return;
}
String[] highlightClass = getHighlightClass(object);
if (highlightClass.length > 0) {
highlightFeature(acceptor, object, ProblemPackage.Literals.NAMED_ELEMENT__NAME, highlightClass);
}
}
protected void highlightCrossReferences(EObject object, IHighlightedPositionAcceptor acceptor,
CancelIndicator cancelIndicator) {
for (EReference reference : object.eClass().getEAllReferences()) {
if (reference.isContainment()) {
continue;
}
operationCanceledManager.checkCanceled(cancelIndicator);
if (reference.isMany()) {
highlightManyValues(object, reference, acceptor);
} else {
highlightSingleValue(object, reference, acceptor);
}
}
}
protected void highlightSingleValue(EObject object, EReference reference, IHighlightedPositionAcceptor acceptor) {
EObject valueObj = (EObject) object.eGet(reference);
String[] highlightClass = getHighlightClass(valueObj);
if (highlightClass.length > 0) {
highlightFeature(acceptor, object, reference, highlightClass);
}
}
protected void highlightManyValues(EObject object, EReference reference, IHighlightedPositionAcceptor acceptor) {
@SuppressWarnings("unchecked")
EList<? extends EObject> values = (EList<? extends EObject>) object.eGet(reference);
List<INode> nodes = NodeModelUtils.findNodesForFeature(object, reference);
int size = Math.min(values.size(), nodes.size());
for (var i = 0; i < size; i++) {
EObject valueInList = values.get(i);
INode node = nodes.get(i);
String[] highlightClass = getHighlightClass(valueInList);
if (highlightClass.length > 0) {
highlightNode(acceptor, node, highlightClass);
}
}
}
protected String[] getHighlightClass(EObject eObject) {
if (ProblemUtil.isBuiltIn(eObject)) {
return new String[] { BUILTIN_CLASS };
}
ImmutableList.Builder<String> classesBuilder = ImmutableList.builder();
if (eObject instanceof ClassDeclaration) {
classesBuilder.add(CLASS_CLASS);
var classDeclaration = (ClassDeclaration) eObject;
if (classDeclaration.isAbstract()) {
classesBuilder.add(ABSTRACT_CLASS);
}
}
if (eObject instanceof EnumDeclaration) {
classesBuilder.add(ENUM_CLASS);
}
if (eObject instanceof ReferenceDeclaration) {
classesBuilder.add(REFERENCE_CLASS);
var referenceDeclaration = (ReferenceDeclaration) eObject;
if (referenceDeclaration.isContainment()) {
classesBuilder.add(CONTAINMENT_CLASS);
}
}
if (eObject instanceof PredicateDefinition) {
classesBuilder.add(PREDICATE_CLASS);
var predicateDefinition = (PredicateDefinition) eObject;
if (predicateDefinition.isError()) {
classesBuilder.add(ERROR_CLASS);
}
}
if (eObject instanceof Node) {
classesBuilder.add(NODE_CLASS);
var node = (Node) eObject;
if (ProblemUtil.isUniqueNode(node)) {
classesBuilder.add(UNIQUE_NODE_CLASS);
}
if (ProblemUtil.isNewNode(node)) {
classesBuilder.add(NEW_NODE_CLASS);
}
}
if (eObject instanceof Parameter) {
classesBuilder.add(PARAMETER_CLASS);
}
if (eObject instanceof Variable) {
classesBuilder.add(VARIABLE_CLASS);
var variable = (Variable) eObject;
if (ProblemUtil.isSingletonVariable(variable)) {
classesBuilder.add(SINGLETON_VARIABLE_CLASS);
}
}
List<String> classes = classesBuilder.build();
return classes.toArray(new String[0]);
}
}
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